SU101503A1 - The method of obtaining sulfated aluminous cement - Google Patents
The method of obtaining sulfated aluminous cementInfo
- Publication number
- SU101503A1 SU101503A1 SU450675A SU450675A SU101503A1 SU 101503 A1 SU101503 A1 SU 101503A1 SU 450675 A SU450675 A SU 450675A SU 450675 A SU450675 A SU 450675A SU 101503 A1 SU101503 A1 SU 101503A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- cement
- alumina
- aluminous cement
- lime
- sulfated
- Prior art date
Links
- 239000004568 cement Substances 0.000 title description 14
- 238000000034 method Methods 0.000 title description 6
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 15
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 12
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 8
- 235000011941 Tilia x europaea Nutrition 0.000 description 8
- 239000004571 lime Substances 0.000 description 8
- 235000011132 calcium sulphate Nutrition 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 229910052602 gypsum Inorganic materials 0.000 description 5
- 239000010440 gypsum Substances 0.000 description 5
- 239000001175 calcium sulphate Substances 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 229910052925 anhydrite Inorganic materials 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000005995 Aluminium silicate Substances 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- 229910001570 bauxite Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 229910020169 SiOa Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- -1 calcium aluminates Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 150000004683 dihydrates Chemical class 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Description
Известны способы получени сульфатированного глиноземистого цемента на основе глиноземистого сырь (боксита, каолина с глиноземом , шлаков производства алюмини и др.) и извести или известн ка путем обжига шихты до спекани , размола клинкера и добавки в размол гипса.There are known methods for producing sulfated alumina cement based on alumina raw materials (bauxite, kaolin with alumina, aluminum production slags, etc.) and lime or lime by burning the mixture prior to sintering, grinding the clinker and adding gypsum to the grinding.
Введение гипса в глиноземистые цементы осуществл етс обычно дл того, чтобы устранить образование понижающих прочность глиноземистого цемента кубических кристаллов трехкальдиевого алюмината в процессе гидратации и повысить температуру цемента.The incorporation of gypsum into high alumina cements is usually carried out in order to eliminate the formation of cubic crystals of three-potassium aluminate which lower the strength of the alumina cement during the hydration process and increase the temperature of the cement.
В этом случае алюминаты кальци глиноземистого цемента, раствор сь в воде, вступают во взаимодействие с сульфатом кальци и образуют повышающее характеристику цемента новое комплексное соединение - гидросульфоалюминат кальци , а развиваема при твердении цемента повышенна температура, в противоположность обычному глиноземистому цементу, оказывает положительное вли ние.In this case, calcium aluminates of high alumina cement, dissolved in water, interact with calcium sulfate and form a cement enhancing characteristic of new complex compound, calcium hydrosulfonic aluminum, and the elevated temperature developed during cement hardening, in contrast to conventional aluminous cement, has a positive effect.
Согласно описываемому изобретению в цел х получени глиноземистого цемента повышенной прочности к шихте из глиноземистого сырь иAccording to the described invention, in order to obtain high-strength alumina cement to the mixture of alumina raw materials and
извести или известн ка добавл ют 15-20% сульфата кальци (гипс или ангидрит), который при температуре около 1300° частично разлагаетс с образованием основного сульфата и небольшого количества жидкой фазы, способствующей спеканию шихты, что позвол ет снижать расход топлива.lime or limestone adds 15–20% calcium sulphate (gypsum or anhydrite), which at a temperature of about 1300 ° partially decomposes to form basic sulphate and a small amount of the liquid phase, which promotes sintering of the charge, which reduces fuel consumption.
Так как полученный спек имеет повышенную пористость, благодар частичной диссоциации сульфата кальци с выделением S02 цри обжиге , то такой спек легче размалываетс .Since the obtained sintered material has an increased porosity, due to the partial dissociation of calcium sulfate with the release of S02 during firing, such sintered is easier to grind.
Технологический процесс получени сульфатированного глиноземистого цемента не отличаетс от производства портландцементного клинкера .The process for producing sulphated alumina cement does not differ from the production of portland cement clinker.
Подготовка сырь к обжигу ведетс по мокрому или так называемому «сухому способу, что зависит от примен емых сырьевых материалов .The preparation of the raw material for firing is carried out by the wet or the so-called dry method, which depends on the raw materials used.
Обжиг шихты во вращающейс цементной печи производитс при температуре около 1300-1350 с выдержкой в зоне спекани около 20 минут.Burning of the charge in a rotary cement kiln is carried out at a temperature of about 1300-1350 with an exposure in the sintering zone of about 20 minutes.
Полученный спек не должен содержать 60viee 1 % свободной извести , а содержание должноThe obtained spec should not contain 60viee 1% free lime, and the content should
быть не менве 40%, SiOa не более 10%, СаО не более 44% и РегОз не более 10%.be less than 40%, SiOa not more than 10%, CaO not more than 44% and RegOz not more than 10%.
При помоле спека добавл етс ангидрит или друга модификаци сульфата кальци (двуводный или полуводный гипс) от 15 до 25%, т. е в таком количестве, чтобы в готовом цементе содержание CaSO было не более 30%.When grinding the cake, anhydrite or another calcium sulphate modification (dihydrate or semi-aquatic gypsum) is added from 15 to 25%, i.e. in such an amount that the CaSO content in the final cement is no more than 30%.
Предмет изобретени Subject invention
Снособ нолучени сульфатированного глиноземистого цемента на основе глиноземистого сырь (боксита , каолина с глиноземом, алюминиевого шлака и др.) и извести или известн ка путем обжига шихты до спекани , помола клинкера и добавки гипса, отличающийс тем, что в сырьевую шихту добавл ют, кроме глиноземистого сырь и извести или известн ка, безводный или водный сульфат .кальци , а полученный после обжига клинкер подвергают помолу с ангидритом или другой модификацией сульфата кальци .The method of obtaining sulfated aluminous cement based on alumina raw materials (bauxite, kaolin with alumina, aluminum slag, etc.) and lime or lime by burning the mixture before sintering, grinding clinker and adding gypsum, characterized in that, except for alumina raw material and lime or lime, anhydrous or aqueous calcium sulphate, and the clinker obtained after calcination is ground with anhydrite or other calcium sulphate modification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU450675A SU101503A1 (en) | 1952-12-02 | 1952-12-02 | The method of obtaining sulfated aluminous cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU450675A SU101503A1 (en) | 1952-12-02 | 1952-12-02 | The method of obtaining sulfated aluminous cement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU101503A1 true SU101503A1 (en) | 1954-11-30 |
Family
ID=48375335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU450675A SU101503A1 (en) | 1952-12-02 | 1952-12-02 | The method of obtaining sulfated aluminous cement |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU101503A1 (en) |
-
1952
- 1952-12-02 SU SU450675A patent/SU101503A1/en active
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