CA2011082A1 - Consolidated mixture from residues - Google Patents
Consolidated mixture from residuesInfo
- Publication number
- CA2011082A1 CA2011082A1 CA 2011082 CA2011082A CA2011082A1 CA 2011082 A1 CA2011082 A1 CA 2011082A1 CA 2011082 CA2011082 CA 2011082 CA 2011082 A CA2011082 A CA 2011082A CA 2011082 A1 CA2011082 A1 CA 2011082A1
- Authority
- CA
- Canada
- Prior art keywords
- mixture
- accordance
- alkali
- solutions
- residues
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 29
- 239000003513 alkali Substances 0.000 claims abstract description 20
- 150000004645 aluminates Chemical class 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052910 alkali metal silicate Inorganic materials 0.000 claims abstract 9
- 239000004566 building material Substances 0.000 claims abstract 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 11
- 239000000243 solution Substances 0.000 claims 10
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 5
- 229910052681 coesite Inorganic materials 0.000 claims 5
- 229910052593 corundum Inorganic materials 0.000 claims 5
- 229910052906 cristobalite Inorganic materials 0.000 claims 5
- 239000000377 silicon dioxide Substances 0.000 claims 5
- 235000012239 silicon dioxide Nutrition 0.000 claims 5
- 229910052682 stishovite Inorganic materials 0.000 claims 5
- 229910052905 tridymite Inorganic materials 0.000 claims 5
- 229910001845 yogo sapphire Inorganic materials 0.000 claims 5
- 238000006477 desulfuration reaction Methods 0.000 claims 3
- 230000023556 desulfurization Effects 0.000 claims 3
- 238000000034 method Methods 0.000 claims 3
- 230000008021 deposition Effects 0.000 claims 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims 1
- 239000007864 aqueous solution Substances 0.000 claims 1
- 239000007900 aqueous suspension Substances 0.000 claims 1
- 239000003546 flue gas Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 239000010909 process residue Substances 0.000 abstract 1
- 239000000428 dust Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- UOACKFBJUYNSLK-XRKIENNPSA-N Estradiol Cypionate Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H](C4=CC=C(O)C=C4CC3)CC[C@@]21C)C(=O)CCC1CCCC1 UOACKFBJUYNSLK-XRKIENNPSA-N 0.000 description 1
- 241000282326 Felis catus Species 0.000 description 1
- 101100000210 Mus caroli Orm8 gene Proteins 0.000 description 1
- 101100313003 Rattus norvegicus Tanc1 gene Proteins 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Detergent Compositions (AREA)
- Fire-Extinguishing Compositions (AREA)
Abstract
Abstract This application suggests to further process residues from industrial manufactures and particularly residues from incinerators and particularly dusts thereof into a consolidating mixture, preferably as form bodies by adding alkali silicate, alkali aluminate and water. It is possible to deposit the mixture on disposal sites or use it as building materials.
Description
20~Q~2 Re~iduee o~ no ~urther utilization d~vel~p ln numeroua lndu~tr~al pro~es6~s ~nd, r~cently, a~ an ~nclneration produ~ o~ ~arbage and combu3tible in~u~rial Wa5tQ mat~rl~l. Part~cular pro~lems resul~
~rom was~o materlals in the form of lncin~ration du~t and the de~ul~urlz~ion ~o~ ~lue ga~.
Such wasts m~terla~ 1~ depo~ited on dlspo~al ~ thls, howovQr, ~an c~a pro~lem~. The re~idues o~ten aontaln sub~t3n~ whiqh ca~ ~e waoh~d out by wa~er, malnly c~lclum and ~dlum ~alt~, predominantly ln tho for~ of qhlorlde~ an~ ~ul~at~, A~ woll ~8 ~al or h~avy m~tal ~lt~ ox tho oxld~s th~reo~ ~hl~h, however, ha~ ~o b~ ~ound ~uch that ~h~y do not saaap~ into th~ ground watsr. Th~ l~ght welght o~ dust~ preaents psrtlculsr p~o~lem$ ~
pr~vant~ng vshicle~ ~rom acce~ai~g the di~pO~fl~ ~lte~. Num~rous xe~l~e~ an~ wao~e matsrlal~s ha~o a gr~a'c volume, ~or exa~ple por~us alag~ o~ dusts, and ~o ~ake u~3 valuable e~a~6~ of dlepooal ~lt~ Q~l~u~ ~nd wa~ mat~r~ re reutiliz~ only to a emall ~xtent .
It 1~ herlce ~n ob~eat to consol~dat~ re~iduaE3 and waata mz~tt3rial~
~uch that on dl~posal 5it~ h~ wa~t~ ma~rlal~ ar~ l~ound an~ ~he re~idues have a heavy weight per unit of volu~. An addltional ob~ect wa~ to ~af~ly b~nd 'che rQ~ldue~ and wzls~ ma'cer~als, for ~xample, ln form bodi~ ~nd ~lmult~n~usly ac:hi~v~ ~U~h a h{gh - ~o~ ~ a~2 strength o~ the consolidat~d mixtur~s of resldua~ And wa9t~
materi~l~ that they can b8 u~ed agaln a~ building ma~erials. ThQ
consolidation ~ th~ dust~ w~ a par~ioular ob~ct.
It 1~ known ko u~e hardening ~gents s~ch a~ diatomite, ~lue a6h, gypsum, anhydride or cement ~or consolidating ma~rlal~. It 1~
d1s~dv~ntagsou~ to these proce~se3, however, that u9~ul building ~at~rial6 ar~ turnQd into waot~ material. Thl~ involv~ hlgh costs and the u~e o~ huge ~moun~s o~ hard~nlng agen~ ~hich ln ~urn take up adfll~lonal sp~ae, i.~ volum~, a~ ~ dl~poaal ~ also ~nown to ~ur~h~ ~anu~ao~ur~ w~a~e m~rial~ ~uch a~ inGin~ra~lcn re~ldue~ of power pl~nt~ lnto buildlng ~atsrial~ by adding, ~or ~Xample, c~m3nt.
~ aa, ~n o~ct o~ th~ in~entlon 1~ ~ mlxtur~ to b~ con~olldated from r031~u~ in ~ccor~ance wtth ~h~ clalm~ ~nd th~ ~ubclaims a~
w811 :'~8 a proce~s ~or produclng th~ mixtureY to be consol~d~ted ln Aacordanc~ wlth tn~ proc~ cl~lm~ and tha ~ubcl~Lim~ th~3r~o~.
It WA~ ~ound that ~lre~dy v~ry 3111PIll aDIount~3 Q~ th~ binding agorlt and the aon~olld~ing ag~nt ln ~c~or~na~ wlth ~h~ ln~ntion ar~
su~icient to bind, in the p~asanc~ o~ water, re~idue~ and e~n p~rticularly du~t-lika re~iduQ~ whlch ~xa ~if~lault to hanal& such th~t ths~ matarl~l~ b~co~a aon301idated ~nd can b~ deposited on a ~ieposal sit~ a~ ~or~ ~odie~, ~or example, or a~ a con~llda~ad non-form~d ma~g or whlch ~an serve a~ building mat~rial, ~or 2~110~2 ~xampl~. ~urth~r, lt w~ ~ound that the harm~ul ~ubstances whlch may b~ contained ln ~he residue~ ~an b~ bound auch that th~y cannot ~capQ and, partlcularly, ~annot bB eluted ~y wa~er, 1. e . be r~mov~d ~rom tha consol ~ dated mlxture .
Th~ ob~ct 1~ aahlav~d ln accor~anc~ wlth the ~n~ention by sa~ly deposlting r~sldues w~ich laay c4nl:aln harm~ul ma~r ~n A dt5pogal ~lte and by d~pos~ting the mixtur~ con~olidated in a~ordance w1th t~e inventlon as a n~w mat~rlal on a ~i~posal ~ite ~uoh that ~he l~as'c po~lblo ~pacs~ i8 takon up on tho disposal sl~e.
Partlcularly loo~ du~t~ can be ~u~ ntly con~oll~ o a~ t~
b4 ~hapa~ into ~orm bo~le~ ~o be dspo~lted on acae~sibls dispo~al ~ite~ or ln~ har~nlng ca~ting0 havlng a hea~ ~ight per volume unit .
Furth~r, lt 1~ 4~n ~h~ ~ct ~o Utll~z~ again o~rtzin rsaidu~s, ~or Qxample a~ buildlng ma~3rial.
In accordanc~ wi~h th~ lnvention, a ~ixtu~e o alXall ~lllca~ or alk~ na'ce i~ ~ployed aa a ~indlng ag~nt which can b~ added a~ a ~lld or, 1~ n~o~ary~ dl~aolv~a ln w~t~r ~or th~ ~urpo~ of con~oll:aating th~ re~ u~ . Only 0 . 05 ~o 5 W~ , pr~f~rably 0 . 2 to 1.5 wt.-~6 o~ the alkali ~llicate and 0.05 to 5 wt.-%, pr~era~ly 1.5 wt.-% of th3~ alkali ~luminAt~, r~rr~ t~ the ~e~ldual ~ollds, r~sp~ativ~ly, arQ ~ r~d ~rom this ~ixturs o~ alXali sllicake and alkali alumlrl~t~. Th~ amount o~ wa~er to be added ~ 3 --2 ~ 8 2 has a weight ratio o~ wat~r to aoll~ ~ub~tanc~ o~ thQ r~ldu~ of genar~lly 0.05 to 0.7, prefsrably o.a to 0.5, i.e, s weigh~ part~
water p~r 100 w~ight p~rt~ o~ r~idu~ to 70 welght parts water p~r loo welgh~ part~ of re~ldu~. Th~ woight ratlo o~ water ~o ~olld re~dua pre~arably r~nging ~rom a . 2 to 0.5 r~sul~s, dependlng on the kind o~ ~e~idue, in a ~lx~ure to b~ con~olldatod by pre~ur~
~hi~h sub~equently blnd~ to ~orm a ~olid ~orm body. Solids in the ~orm of ~lag~, ~or ~xampl~, h~ng a ~mallsr ~ur~aca only r~qulre a binding agant ln th~ low~r gQnaral range. A~ ~ar a~ mixture~ ar~
Goncerned which mu~t hav~ stlr~lng, pumping or ~ouring proper~ie~, it 1~ a~v~n~ag~ou~ ~o oper~ wl~h hl~h w~ta~ ~on~n~ ranglng ~rom 0.35 to 0.7 o~ ~h~ w~ight ratlo o~ w~tor to ~olld~ 5 to 70 welght part~ o~ wat~r per 100 weight par~ od ~olid re~idue.
Tha weight r tlo o~ al~ ate ~o ~l~ali aluminats ~an range ~tw~n 1: 100 up ~o 100: 1, how~v~r, 4: 1 ~p to 1: 1 we~ght parts o~ ~lk~ ilicate to l!Llkali alu3ainate are to b~ p~eferr~a.
~n the alk~ c.t0~ ~nd the Ylkall ~luminat~s, ~lk. li prQfQral: ly mean~ so~lum or may ~a p~ lumO In thQ alX~ll cates and the olutlorls thereo~ w~ight ratio o~ sio;3 ~o ~a20 h~ A ~1U~ . 5 ~0 4 ~ O . In thc Alkali aluminat~3a a~d t~e solutlons th8raof, ~hQ mole ratio o~ NA20 ~0 A1203 must b~ g~eate~
than l. oS, prs er~bl~ 5 to l. 50.
The con~olldating mix~ur~ from ~he re~idua~ and th~ binding agents 2~1108~
cAn hav~ a dry walght up to O . 8 to 1. 6 g/cm3, ~uch that O . 8 to 1. 6 t o~ the re~idual product~ can be daposlted per m o~ di~posal slt~
volume . Pre~erably, th~ ~es~dual prc~ducts are depositqd as f orm b~dl~s or, lf nac~ary, a~ a ma~s ~ be po~red out on th~ di~posal site. In c~e ~rom bodies are ~elec~ed, blOck~ or cub~3 are to bs pre~erred duo to th~ir ~mall vclum~3. In ca~o building ~aterials are produced, any deel~ rad ~orm can be c~l~ctod.
The material t~ ~ d~po~lted, ~.~. the mlxtur~ to be ~or~lldated, aAn be mlx~ at th~ ~ispo~al ~it~ or a~ th~ location whar~ th~
resldue~ ~re produced. I~ nec{~sary, it i~ po~sible ~ fir~t produc~ a pourabl~ pro~uat whlch will ~h~n be co~pre~ed by preR~ure at the diBpo~3al Bite. The hardening into 3 ~o~soli~at~d mlxture or ~orm body re~alt~ ln good valu~.
I~ is a ~pecial object o~ the invention to add resi~ue~ to ~he ~lx~ures or form bodio~. Th~ r~ u~ con~aln ~ub~t~no~ like c~lcium ~ulfate, ~or ~xample, w~i~h dev~lop durin~ ~he purl~l~atlon o~ $1u~ qa~ from ~urnace~ in power plant~ and indu~tr~al plant by m~an~ of ~9ulfurlzation.
In construc~lon in~u~ h~ re~ul~iny produ~s in th~ fo~m of ~orm bodles ars test~d accordirlg t~ 18127, 18130, 18121 and DIN la200 whereby th~ ~alu~ for aompre~lve ~ n~h and breaking comprQssion L meet the requirement~ ~or bullding materl~l~ It 1~
particularly ad~antag~u~ th~t tha p~rm~ablllty ao~ficient ~o~ ~he 2 ~ 2 introduct$on of thQ blndlng agQnt ln accordance wlth the ln~ention i~ extraord~narily low, l.e. a very low permeability c~efficien~
of ~ determlned ln t~e triaxial pormeablllty t~t accordlng to DIN 18130 indlc~lting a very low perm~zlbility ~or wat~r such that ~v~n water-~olubl~ an~ harm~ul ~ubstanc~ whlch might bo contained in th~ r~sidue~ and can be elut~d wlth ~a~er cannot ~ romov~d from tho dlsposal site or the build~ng matBrl~l and rem~ln ~af~ly bound thereln.
03~3 3~841~ 84 FELFE LYNCH ~5. 01 90 ~ 2 ~ 2 Exa~ple 1 Flue dust ~rom a~ $ncinerator i~ mixed with ~uch an amount o~ ~atar that ~he weight r~tio of wa~er to sollds i~ 0.35. 0.75 wt.-~, r~ferred to the ~lue dust, o~ a mixture of ~oli~ alkall slllc~t~
and ~lld alkal~ aluminate i8 add~d to this mixture. The ~ormQr mixture h~ the 3~e welght ~ar~ o~ ~olid alkall ~ilic~ta oompo~ed of 63 w~.-% S~O~, 19 wt.~ ~2 and 18 wt.~ w~tor and aolid alkali aluminate composed o~ S3 wt~-% A1203, 38 wt.-~ Na20 and 9 w~
watar. For ho~og~niz~t~on, ~h~ mlx~ura i9 ~ub~ect to an lnt~nslve ~ixln~ f 4~ 2 to 3 ~lnu~. In R P~oo~or tub~, ~he ro~ù~t1ng product i~ cQmpras~ed by a ~alling wolght ~ccording to DIN 18127.
According to ~IN 18127, a seriea o~ mea~urem2nts including 5 indl~lduAl ~s~ re~ult~ ln ~n a~r~y~ ~ry ~on~l~y vAlu~ of 1.~26 g/~3, ~ wet ma~ o 1.65 g/~m3 and, accordlng to DIN 18121 a ~aan water ~ont~n~ W ~ 0.34~. For thi~ te~t ~ries a m~n permeability coaff~cient of k~ - 7.5~ lo~~l m/~ec~ a compre~ive ~tr~ngth o~ 1.03 MN/m~ ~nd ~ broaking compr~x~lon ~ ~ 1.60 ~ was mea~ured in the trlaxial parmaability te~t ccording to DIN lal30 Example 2 ~ ue~ ~ro~ ~n incln~rator ope~a~ing o~ the fluidizad bed principle i3 mixed with ~uch ~n ~mount of w~Qr that th~ w~lgh~
ratlo o~ water to ~olid~ iB 0. ~9 . O . 70 Wt. ~ 0~ the m~xture o~
~lXall silic~te and alXall aluminat~ a~ m~n~ned ln ~xample 1 a~e added to thi~ mlxtur~. Th~ r~ul~ng product is compr~ d in a Pro~tor ~ube aocording to D~N 18L27. Th~ produ~ ha~ a dry dan~ity 2 ~ 2 of 1.4~ g~c~3 with a water contentR of W . 0.289 and a wet ma~s o~
1.84 q/cm3. ~hi~ per~ea~ility ~oe~Picient kf is d~termined to 5 lO 11 ~/seo Example 3 Flue du~ ~rom a brown co~l power ~tation and the ~u~pension r~ul~ing durlng d~ulfurlza~ion wl~h ~ ~olld ~ercon~age oS 36 wt.-% ar~ mixed in a ratio 6uch that a wel~ht r~tlo of wat~r to tot~l ~olld~ of 0127 13 o~alned. 0.5 wt.-~, ra~e~r~d ~o th~ total ~ollds, o~ th~ mixtu~ of ~lkali ~ ato and alkall aluminate according to exampla l are addod to th~s ~lxtur~. ~or ~o~ogoniza~ion, ~hQ ~ix~ur~ u~e~ to 3 ~inutes o~ inten~ive mixing. Within ~ fe~ hour~ tha m~s~ blnd~ to form ~olid bodie~.
In a ~ompa~ati~e test wlthout tha ~indlng agent in accordance with the lnv0ntion, there 1~ no aon~oli~lon.
~xample 4 Exa~ple 3 1~ r~peR~e~, how~ve~, the ~ount o~ auspenslon ~ro~ the de~ul~urization prw ~e~ wh~ch 1~ addod whlle b~ ng ~t~rro~ ls m~a~ur~d ~u~h ~ha~ ~he re~ult i8 a ~uspen~ion which c~n ~low and a~n ba pumped ~n ha0 ~ w~igh~ ~a~lo of wa~er to ~olids o~ 0,~4.
Sub equ~ntly, o . ~ wt. -~, r~rr~d to ~h~ ~olld~, o~ th~ alkali ~ at~ and th~ alkali aluminate a~ mantlon~ in ~xa~pl~ 1 are ad~d at a ratio o~ 3.0 ; 1. ~hl~ ~u~pe~sio~ i8 pumped to a dispos~l slt~ in~ af~r drying, lt ~orm8 ~ wall con~oli~ate~ ~ass having a dry d~3n~ity af 1. 2 g/o~3 .
2 ~ 2 Exampl~ 5 1350 g o~ inclneration flu~ dust ar~ mlxsd wl~h 415.8 g water.
1~ . 3 g o~ an aguaou~ ~odium ail~ CAtl~ solutlon compo~d o~ 26 . 9 wt. -% sio2, 8 wt.-% ~2 and 65.1 wt.-% water a~ well a3 11.7 g of an a~eous ~od~ lum$n~s ~olutlon compos~d o~ 23 wt.~9~ AlaO3, 18 w~ N~20 and 59 wt. -~ w~tQr ~r~ add~d . For horaog~nlzat~ on th~
mlxture i~ su~ec~ to 5 mlnuteR of inten~ive ~AlxinS~. Subsequently, ~ compre~sion 18 c2lrried out a~ de~crl~ad in axampl~ 1.
Meaeurements indl~at~ a dry den~ity of l o 3 ~ ~JCltl3 a~ a wat~r conkent~ o~ W ~ O . 318 and ~ wet ma~s o~ 1. 75 cm3 ~ The ma~s binds within ~ houxa. The pe~eabill~y coef~lcient Xf or the te~t body i~ 3.5 ' 10 11 m/~ec.
~rom was~o materlals in the form of lncin~ration du~t and the de~ul~urlz~ion ~o~ ~lue ga~.
Such wasts m~terla~ 1~ depo~ited on dlspo~al ~ thls, howovQr, ~an c~a pro~lem~. The re~idues o~ten aontaln sub~t3n~ whiqh ca~ ~e waoh~d out by wa~er, malnly c~lclum and ~dlum ~alt~, predominantly ln tho for~ of qhlorlde~ an~ ~ul~at~, A~ woll ~8 ~al or h~avy m~tal ~lt~ ox tho oxld~s th~reo~ ~hl~h, however, ha~ ~o b~ ~ound ~uch that ~h~y do not saaap~ into th~ ground watsr. Th~ l~ght welght o~ dust~ preaents psrtlculsr p~o~lem$ ~
pr~vant~ng vshicle~ ~rom acce~ai~g the di~pO~fl~ ~lte~. Num~rous xe~l~e~ an~ wao~e matsrlal~s ha~o a gr~a'c volume, ~or exa~ple por~us alag~ o~ dusts, and ~o ~ake u~3 valuable e~a~6~ of dlepooal ~lt~ Q~l~u~ ~nd wa~ mat~r~ re reutiliz~ only to a emall ~xtent .
It 1~ herlce ~n ob~eat to consol~dat~ re~iduaE3 and waata mz~tt3rial~
~uch that on dl~posal 5it~ h~ wa~t~ ma~rlal~ ar~ l~ound an~ ~he re~idues have a heavy weight per unit of volu~. An addltional ob~ect wa~ to ~af~ly b~nd 'che rQ~ldue~ and wzls~ ma'cer~als, for ~xample, ln form bodi~ ~nd ~lmult~n~usly ac:hi~v~ ~U~h a h{gh - ~o~ ~ a~2 strength o~ the consolidat~d mixtur~s of resldua~ And wa9t~
materi~l~ that they can b8 u~ed agaln a~ building ma~erials. ThQ
consolidation ~ th~ dust~ w~ a par~ioular ob~ct.
It 1~ known ko u~e hardening ~gents s~ch a~ diatomite, ~lue a6h, gypsum, anhydride or cement ~or consolidating ma~rlal~. It 1~
d1s~dv~ntagsou~ to these proce~se3, however, that u9~ul building ~at~rial6 ar~ turnQd into waot~ material. Thl~ involv~ hlgh costs and the u~e o~ huge ~moun~s o~ hard~nlng agen~ ~hich ln ~urn take up adfll~lonal sp~ae, i.~ volum~, a~ ~ dl~poaal ~ also ~nown to ~ur~h~ ~anu~ao~ur~ w~a~e m~rial~ ~uch a~ inGin~ra~lcn re~ldue~ of power pl~nt~ lnto buildlng ~atsrial~ by adding, ~or ~Xample, c~m3nt.
~ aa, ~n o~ct o~ th~ in~entlon 1~ ~ mlxtur~ to b~ con~olldated from r031~u~ in ~ccor~ance wtth ~h~ clalm~ ~nd th~ ~ubclaims a~
w811 :'~8 a proce~s ~or produclng th~ mixtureY to be consol~d~ted ln Aacordanc~ wlth tn~ proc~ cl~lm~ and tha ~ubcl~Lim~ th~3r~o~.
It WA~ ~ound that ~lre~dy v~ry 3111PIll aDIount~3 Q~ th~ binding agorlt and the aon~olld~ing ag~nt ln ~c~or~na~ wlth ~h~ ln~ntion ar~
su~icient to bind, in the p~asanc~ o~ water, re~idue~ and e~n p~rticularly du~t-lika re~iduQ~ whlch ~xa ~if~lault to hanal& such th~t ths~ matarl~l~ b~co~a aon301idated ~nd can b~ deposited on a ~ieposal sit~ a~ ~or~ ~odie~, ~or example, or a~ a con~llda~ad non-form~d ma~g or whlch ~an serve a~ building mat~rial, ~or 2~110~2 ~xampl~. ~urth~r, lt w~ ~ound that the harm~ul ~ubstances whlch may b~ contained ln ~he residue~ ~an b~ bound auch that th~y cannot ~capQ and, partlcularly, ~annot bB eluted ~y wa~er, 1. e . be r~mov~d ~rom tha consol ~ dated mlxture .
Th~ ob~ct 1~ aahlav~d ln accor~anc~ wlth the ~n~ention by sa~ly deposlting r~sldues w~ich laay c4nl:aln harm~ul ma~r ~n A dt5pogal ~lte and by d~pos~ting the mixtur~ con~olidated in a~ordance w1th t~e inventlon as a n~w mat~rlal on a ~i~posal ~ite ~uoh that ~he l~as'c po~lblo ~pacs~ i8 takon up on tho disposal sl~e.
Partlcularly loo~ du~t~ can be ~u~ ntly con~oll~ o a~ t~
b4 ~hapa~ into ~orm bo~le~ ~o be dspo~lted on acae~sibls dispo~al ~ite~ or ln~ har~nlng ca~ting0 havlng a hea~ ~ight per volume unit .
Furth~r, lt 1~ 4~n ~h~ ~ct ~o Utll~z~ again o~rtzin rsaidu~s, ~or Qxample a~ buildlng ma~3rial.
In accordanc~ wi~h th~ lnvention, a ~ixtu~e o alXall ~lllca~ or alk~ na'ce i~ ~ployed aa a ~indlng ag~nt which can b~ added a~ a ~lld or, 1~ n~o~ary~ dl~aolv~a ln w~t~r ~or th~ ~urpo~ of con~oll:aating th~ re~ u~ . Only 0 . 05 ~o 5 W~ , pr~f~rably 0 . 2 to 1.5 wt.-~6 o~ the alkali ~llicate and 0.05 to 5 wt.-%, pr~era~ly 1.5 wt.-% of th3~ alkali ~luminAt~, r~rr~ t~ the ~e~ldual ~ollds, r~sp~ativ~ly, arQ ~ r~d ~rom this ~ixturs o~ alXali sllicake and alkali alumlrl~t~. Th~ amount o~ wa~er to be added ~ 3 --2 ~ 8 2 has a weight ratio o~ wat~r to aoll~ ~ub~tanc~ o~ thQ r~ldu~ of genar~lly 0.05 to 0.7, prefsrably o.a to 0.5, i.e, s weigh~ part~
water p~r 100 w~ight p~rt~ o~ r~idu~ to 70 welght parts water p~r loo welgh~ part~ of re~ldu~. Th~ woight ratlo o~ water ~o ~olld re~dua pre~arably r~nging ~rom a . 2 to 0.5 r~sul~s, dependlng on the kind o~ ~e~idue, in a ~lx~ure to b~ con~olldatod by pre~ur~
~hi~h sub~equently blnd~ to ~orm a ~olid ~orm body. Solids in the ~orm of ~lag~, ~or ~xampl~, h~ng a ~mallsr ~ur~aca only r~qulre a binding agant ln th~ low~r gQnaral range. A~ ~ar a~ mixture~ ar~
Goncerned which mu~t hav~ stlr~lng, pumping or ~ouring proper~ie~, it 1~ a~v~n~ag~ou~ ~o oper~ wl~h hl~h w~ta~ ~on~n~ ranglng ~rom 0.35 to 0.7 o~ ~h~ w~ight ratlo o~ w~tor to ~olld~ 5 to 70 welght part~ o~ wat~r per 100 weight par~ od ~olid re~idue.
Tha weight r tlo o~ al~ ate ~o ~l~ali aluminats ~an range ~tw~n 1: 100 up ~o 100: 1, how~v~r, 4: 1 ~p to 1: 1 we~ght parts o~ ~lk~ ilicate to l!Llkali alu3ainate are to b~ p~eferr~a.
~n the alk~ c.t0~ ~nd the Ylkall ~luminat~s, ~lk. li prQfQral: ly mean~ so~lum or may ~a p~ lumO In thQ alX~ll cates and the olutlorls thereo~ w~ight ratio o~ sio;3 ~o ~a20 h~ A ~1U~ . 5 ~0 4 ~ O . In thc Alkali aluminat~3a a~d t~e solutlons th8raof, ~hQ mole ratio o~ NA20 ~0 A1203 must b~ g~eate~
than l. oS, prs er~bl~ 5 to l. 50.
The con~olldating mix~ur~ from ~he re~idua~ and th~ binding agents 2~1108~
cAn hav~ a dry walght up to O . 8 to 1. 6 g/cm3, ~uch that O . 8 to 1. 6 t o~ the re~idual product~ can be daposlted per m o~ di~posal slt~
volume . Pre~erably, th~ ~es~dual prc~ducts are depositqd as f orm b~dl~s or, lf nac~ary, a~ a ma~s ~ be po~red out on th~ di~posal site. In c~e ~rom bodies are ~elec~ed, blOck~ or cub~3 are to bs pre~erred duo to th~ir ~mall vclum~3. In ca~o building ~aterials are produced, any deel~ rad ~orm can be c~l~ctod.
The material t~ ~ d~po~lted, ~.~. the mlxtur~ to be ~or~lldated, aAn be mlx~ at th~ ~ispo~al ~it~ or a~ th~ location whar~ th~
resldue~ ~re produced. I~ nec{~sary, it i~ po~sible ~ fir~t produc~ a pourabl~ pro~uat whlch will ~h~n be co~pre~ed by preR~ure at the diBpo~3al Bite. The hardening into 3 ~o~soli~at~d mlxture or ~orm body re~alt~ ln good valu~.
I~ is a ~pecial object o~ the invention to add resi~ue~ to ~he ~lx~ures or form bodio~. Th~ r~ u~ con~aln ~ub~t~no~ like c~lcium ~ulfate, ~or ~xample, w~i~h dev~lop durin~ ~he purl~l~atlon o~ $1u~ qa~ from ~urnace~ in power plant~ and indu~tr~al plant by m~an~ of ~9ulfurlzation.
In construc~lon in~u~ h~ re~ul~iny produ~s in th~ fo~m of ~orm bodles ars test~d accordirlg t~ 18127, 18130, 18121 and DIN la200 whereby th~ ~alu~ for aompre~lve ~ n~h and breaking comprQssion L meet the requirement~ ~or bullding materl~l~ It 1~
particularly ad~antag~u~ th~t tha p~rm~ablllty ao~ficient ~o~ ~he 2 ~ 2 introduct$on of thQ blndlng agQnt ln accordance wlth the ln~ention i~ extraord~narily low, l.e. a very low permeability c~efficien~
of ~ determlned ln t~e triaxial pormeablllty t~t accordlng to DIN 18130 indlc~lting a very low perm~zlbility ~or wat~r such that ~v~n water-~olubl~ an~ harm~ul ~ubstanc~ whlch might bo contained in th~ r~sidue~ and can be elut~d wlth ~a~er cannot ~ romov~d from tho dlsposal site or the build~ng matBrl~l and rem~ln ~af~ly bound thereln.
03~3 3~841~ 84 FELFE LYNCH ~5. 01 90 ~ 2 ~ 2 Exa~ple 1 Flue dust ~rom a~ $ncinerator i~ mixed with ~uch an amount o~ ~atar that ~he weight r~tio of wa~er to sollds i~ 0.35. 0.75 wt.-~, r~ferred to the ~lue dust, o~ a mixture of ~oli~ alkall slllc~t~
and ~lld alkal~ aluminate i8 add~d to this mixture. The ~ormQr mixture h~ the 3~e welght ~ar~ o~ ~olid alkall ~ilic~ta oompo~ed of 63 w~.-% S~O~, 19 wt.~ ~2 and 18 wt.~ w~tor and aolid alkali aluminate composed o~ S3 wt~-% A1203, 38 wt.-~ Na20 and 9 w~
watar. For ho~og~niz~t~on, ~h~ mlx~ura i9 ~ub~ect to an lnt~nslve ~ixln~ f 4~ 2 to 3 ~lnu~. In R P~oo~or tub~, ~he ro~ù~t1ng product i~ cQmpras~ed by a ~alling wolght ~ccording to DIN 18127.
According to ~IN 18127, a seriea o~ mea~urem2nts including 5 indl~lduAl ~s~ re~ult~ ln ~n a~r~y~ ~ry ~on~l~y vAlu~ of 1.~26 g/~3, ~ wet ma~ o 1.65 g/~m3 and, accordlng to DIN 18121 a ~aan water ~ont~n~ W ~ 0.34~. For thi~ te~t ~ries a m~n permeability coaff~cient of k~ - 7.5~ lo~~l m/~ec~ a compre~ive ~tr~ngth o~ 1.03 MN/m~ ~nd ~ broaking compr~x~lon ~ ~ 1.60 ~ was mea~ured in the trlaxial parmaability te~t ccording to DIN lal30 Example 2 ~ ue~ ~ro~ ~n incln~rator ope~a~ing o~ the fluidizad bed principle i3 mixed with ~uch ~n ~mount of w~Qr that th~ w~lgh~
ratlo o~ water to ~olid~ iB 0. ~9 . O . 70 Wt. ~ 0~ the m~xture o~
~lXall silic~te and alXall aluminat~ a~ m~n~ned ln ~xample 1 a~e added to thi~ mlxtur~. Th~ r~ul~ng product is compr~ d in a Pro~tor ~ube aocording to D~N 18L27. Th~ produ~ ha~ a dry dan~ity 2 ~ 2 of 1.4~ g~c~3 with a water contentR of W . 0.289 and a wet ma~s o~
1.84 q/cm3. ~hi~ per~ea~ility ~oe~Picient kf is d~termined to 5 lO 11 ~/seo Example 3 Flue du~ ~rom a brown co~l power ~tation and the ~u~pension r~ul~ing durlng d~ulfurlza~ion wl~h ~ ~olld ~ercon~age oS 36 wt.-% ar~ mixed in a ratio 6uch that a wel~ht r~tlo of wat~r to tot~l ~olld~ of 0127 13 o~alned. 0.5 wt.-~, ra~e~r~d ~o th~ total ~ollds, o~ th~ mixtu~ of ~lkali ~ ato and alkall aluminate according to exampla l are addod to th~s ~lxtur~. ~or ~o~ogoniza~ion, ~hQ ~ix~ur~ u~e~ to 3 ~inutes o~ inten~ive mixing. Within ~ fe~ hour~ tha m~s~ blnd~ to form ~olid bodie~.
In a ~ompa~ati~e test wlthout tha ~indlng agent in accordance with the lnv0ntion, there 1~ no aon~oli~lon.
~xample 4 Exa~ple 3 1~ r~peR~e~, how~ve~, the ~ount o~ auspenslon ~ro~ the de~ul~urization prw ~e~ wh~ch 1~ addod whlle b~ ng ~t~rro~ ls m~a~ur~d ~u~h ~ha~ ~he re~ult i8 a ~uspen~ion which c~n ~low and a~n ba pumped ~n ha0 ~ w~igh~ ~a~lo of wa~er to ~olids o~ 0,~4.
Sub equ~ntly, o . ~ wt. -~, r~rr~d to ~h~ ~olld~, o~ th~ alkali ~ at~ and th~ alkali aluminate a~ mantlon~ in ~xa~pl~ 1 are ad~d at a ratio o~ 3.0 ; 1. ~hl~ ~u~pe~sio~ i8 pumped to a dispos~l slt~ in~ af~r drying, lt ~orm8 ~ wall con~oli~ate~ ~ass having a dry d~3n~ity af 1. 2 g/o~3 .
2 ~ 2 Exampl~ 5 1350 g o~ inclneration flu~ dust ar~ mlxsd wl~h 415.8 g water.
1~ . 3 g o~ an aguaou~ ~odium ail~ CAtl~ solutlon compo~d o~ 26 . 9 wt. -% sio2, 8 wt.-% ~2 and 65.1 wt.-% water a~ well a3 11.7 g of an a~eous ~od~ lum$n~s ~olutlon compos~d o~ 23 wt.~9~ AlaO3, 18 w~ N~20 and 59 wt. -~ w~tQr ~r~ add~d . For horaog~nlzat~ on th~
mlxture i~ su~ec~ to 5 mlnuteR of inten~ive ~AlxinS~. Subsequently, ~ compre~sion 18 c2lrried out a~ de~crl~ad in axampl~ 1.
Meaeurements indl~at~ a dry den~ity of l o 3 ~ ~JCltl3 a~ a wat~r conkent~ o~ W ~ O . 318 and ~ wet ma~s o~ 1. 75 cm3 ~ The ma~s binds within ~ houxa. The pe~eabill~y coef~lcient Xf or the te~t body i~ 3.5 ' 10 11 m/~ec.
Claims (21)
1. Consolidating mixture from residues which may contain harmful matter suited for deposition or building material, characterized in that it contains water, alkali silicate and alkali aluminate.
2. Mixture in accordance with claim 1, characterized in that the proportion of alkali silicate amounts to 0.05 to 5 weight parts, referred to 100 weight parts of residue.
3. Mixture in accordance with claim 1, characterized in that the proportion of alkali aluminate amounts to 0.05 to 5 weight parts, referred to 100 wt. parts of residue.
4. Mixture in accordance with claim 1, characterized in that the weight ratio of water to residues is 0.05 to 70.
5. Mixture in accordance with claim 1, characterized in that the residues from the desulfurization, contain up to 30 wt. parts per 100 part of residue.
6. Mixture in accordance with claim 1, characterized in that the dry weight amounts to 0.8 to 1.6 t per cm3.
7. Mixture in accordance with claim 1, characterized in that in the alkali aluminate and the solutions thereof, the mole ratio Me2O/Al2O3 is greater than 1.05.
8. Mixture in accordance with claim 1, characterized in that in the alkali silicate and the solutions thereof, the weight ratio of SiO2/MeO is 1.5 to 4Ø
9. Mixture in accordance with claim 2, 3 or 4, characterized in that the residues from the desulfurization, preferably, contain up to 30 wt. parts per 100 part of residue.
10. Mixture in accordance with claim 9, characterized in that the dry weight amounts to 0.8 to 1.6 t per cm3.
11. Mixture in accordance with claim 1, 2, 3, 4, 5 or 6, characterized in that in the alkali aluminate and the solutions thereof, the mole ratio of Me2O/Al2O3 is greater than 1.05, and Me is Na.
12. Mixture in accordance with claim 1, 2, 3, 4, 5 or 6, characterized in that in the alkali aluminate and the solutions thereof, the mole ratio of Me2O/Al2O3 is greater than 1.05, and Me is K.
13. Mixture in accordance with claim 1, 2, 3, 4, 5 or 6, characterized in that in the alkali aluminate and the solutions thereof, the mole ratio of Me2O/Al2O3 is greater than 1.15 to 1.35 and Me is Na.
14. Mixture in accordance with claim 1, 2, 3, 4, 5 or 6, characterized in that in the alkali aluminate and the solutions thereof, the mole ratio of Me2O/Al2O3 is greater than 1.15 to 1.35 and, Me is K.
15. Mixture in accordance with claim 1, 2, 3, 4, 5 or 6, characterized in that in the alkali silicate and the solutions thereof, the weight ratio of SiO2/MeO is 1.5 to 4.0, and alkali means Na.
16. Mixture in accordance with claim 1, 2, 3, 4, 5 or 6, characterized in that in the alkali silicate and the solutions thereof, the weight ratio of SiO2/MeO is 1.5 to 4.0 and alkali means K.
17. Mixture in accordance with claim 1, 2, 3, 4, 5 or 6, characterized in that in the alkali silicate and the solutions thereof, the weight ratio of SiO2/MeO is 2.0 to 3.9 and alkali means Na.
18. Mixture in accordance with claim 1, 2, 3, 4, 5 or 6, characterized in that in the alkali silicate and the solutions thereof, the weight ratio of SiO2/MeO is 2.0 to 3.9 and alkali means K.
19. Process for producing a consolidating mixture from residues which may contain harmful matter suited for deposition or building material, characterized in that in a mixer, the residues and possible contents of harmful substances to be deposited are intensively mixed with aqueous solutions or suspensions of alkali silicates and alkali aluminates and this mixture, which is poured, pumped or is to be compressed, is transferred to a disposal site or formed into form bodies.
20. Process in accordance with claim 19, characterized in that flue gas desulfurization residues are added.
21. Process in accordance with claim 19 or 20, characterized in that formed and hardened mixtures are used as building material or the like.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19893908125 DE3908125A1 (en) | 1989-03-13 | 1989-03-13 | REINFORCING MIXTURE OF RESIDUES |
| DEP3908125.7 | 1989-03-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2011082A1 true CA2011082A1 (en) | 1990-09-13 |
Family
ID=6376235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2011082 Abandoned CA2011082A1 (en) | 1989-03-13 | 1990-02-28 | Consolidated mixture from residues |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0387727A3 (en) |
| JP (1) | JPH02279175A (en) |
| CA (1) | CA2011082A1 (en) |
| DD (1) | DD298770A5 (en) |
| DE (1) | DE3908125A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4032281A1 (en) * | 1990-10-11 | 1992-04-16 | Hans Herberger | Construction plate for e.g. paving slabs - composed of concrete as a carrier material with an additive of recycled material |
| DE4039461C2 (en) * | 1990-12-11 | 1994-04-21 | Wilhelm Geiger Gmbh & Co | Method and device for disposing of reactor and / or flue gas residues |
| DE4142999A1 (en) * | 1991-12-24 | 1993-07-01 | Oesterreich Franz | METHOD FOR FASTENING LOOSE METAL CONTAINERS, FASTENING DEVICE AND FASTENING PRODUCT |
| FR2721017B1 (en) * | 1994-06-13 | 1996-09-06 | Jean Couturier | Active load for concrete. |
| DE19541479C1 (en) | 1995-11-07 | 1997-03-13 | Poligrat Holding Gmbh | Processing and solidification of phosphoric acid-contg. solns. |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1313626A (en) * | 1919-08-19 | Planoorapii co | ||
| CA965966A (en) * | 1970-01-08 | 1975-04-15 | Jesse R. Conner | Land improvement with waste materials |
| US3928195A (en) * | 1972-12-22 | 1975-12-23 | Kelmik Inc | Liquid purifying process |
| FR2320266A1 (en) * | 1975-08-06 | 1977-03-04 | Quienot Jean | SOLIDIFICATION PROCESS FOR WASTE OF VARIOUS NATURE AND ORIGIN |
| DE3126200C2 (en) * | 1981-07-03 | 1985-03-14 | Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck | Process for removing residue products from waste incineration plants |
| DE3528054A1 (en) * | 1985-08-05 | 1986-05-15 | Eugen Dr. 6000 Frankfurt Dumont | Sea-water resistant, deep-sea-resistant binding of pollutants |
| DE3634650A1 (en) * | 1986-10-10 | 1988-05-19 | Hoelter Gmbh | METHOD FOR DISPOSAL OF POLLUTANT-laden SUBSTANCES AND USE OF THE PRODUCT PRODUCED THEREOF |
-
1989
- 1989-03-13 DE DE19893908125 patent/DE3908125A1/en not_active Withdrawn
-
1990
- 1990-02-28 CA CA 2011082 patent/CA2011082A1/en not_active Abandoned
- 1990-03-10 EP EP19900104568 patent/EP0387727A3/en not_active Withdrawn
- 1990-03-12 DD DD90338611A patent/DD298770A5/en not_active IP Right Cessation
- 1990-03-13 JP JP2060139A patent/JPH02279175A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP0387727A3 (en) | 1991-03-13 |
| DE3908125A1 (en) | 1990-09-20 |
| JPH02279175A (en) | 1990-11-15 |
| DD298770A5 (en) | 1992-03-12 |
| EP0387727A2 (en) | 1990-09-19 |
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