DD259639A5 - METHOD FOR REMOVING MERCURY FROM ARSENIC WASTE SOIL - Google Patents
METHOD FOR REMOVING MERCURY FROM ARSENIC WASTE SOIL Download PDFInfo
- Publication number
- DD259639A5 DD259639A5 DD87302641A DD30264187A DD259639A5 DD 259639 A5 DD259639 A5 DD 259639A5 DD 87302641 A DD87302641 A DD 87302641A DD 30264187 A DD30264187 A DD 30264187A DD 259639 A5 DD259639 A5 DD 259639A5
- Authority
- DD
- German Democratic Republic
- Prior art keywords
- mercury
- sulfuric acid
- arsenic
- waste sulfuric
- treatment
- Prior art date
Links
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 229910052753 mercury Inorganic materials 0.000 title claims abstract description 32
- 239000002699 waste material Substances 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 15
- 229910052785 arsenic Inorganic materials 0.000 title claims abstract description 12
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 title claims abstract description 12
- 239000002689 soil Substances 0.000 title 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 51
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000010949 copper Substances 0.000 claims abstract description 16
- 229910052802 copper Inorganic materials 0.000 claims abstract description 12
- 230000035484 reaction time Effects 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000001556 precipitation Methods 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 239000010881 fly ash Substances 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims 3
- 239000002184 metal Substances 0.000 claims 3
- 229910052751 metal Inorganic materials 0.000 claims 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims 2
- 238000005267 amalgamation Methods 0.000 claims 2
- 238000001816 cooling Methods 0.000 claims 2
- YQMLDSWXEQOSPP-UHFFFAOYSA-N selanylidenemercury Chemical compound [Hg]=[Se] YQMLDSWXEQOSPP-UHFFFAOYSA-N 0.000 claims 2
- DOBUSJIVSSJEDA-UHFFFAOYSA-L 1,3-dioxa-2$l^{6}-thia-4-mercuracyclobutane 2,2-dioxide Chemical compound [Hg+2].[O-]S([O-])(=O)=O DOBUSJIVSSJEDA-UHFFFAOYSA-L 0.000 claims 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 claims 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 claims 1
- 238000003723 Smelting Methods 0.000 claims 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims 1
- 238000009825 accumulation Methods 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 239000010953 base metal Substances 0.000 claims 1
- 239000012141 concentrate Substances 0.000 claims 1
- 229910001431 copper ion Inorganic materials 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- -1 mercury II compound Chemical class 0.000 claims 1
- 229910000370 mercury sulfate Inorganic materials 0.000 claims 1
- 229940008718 metallic mercury Drugs 0.000 claims 1
- 238000006386 neutralization reaction Methods 0.000 claims 1
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 229910052711 selenium Inorganic materials 0.000 claims 1
- 239000011669 selenium Substances 0.000 claims 1
- 239000010865 sewage Substances 0.000 claims 1
- 229910052709 silver Inorganic materials 0.000 claims 1
- 239000004332 silver Substances 0.000 claims 1
- 238000005979 thermal decomposition reaction Methods 0.000 claims 1
- 238000005406 washing Methods 0.000 claims 1
- 239000003500 flue dust Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000010306 acid treatment Methods 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/62—Heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/44—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
- C22B3/46—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes by substitution, e.g. by cementation
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/90—Separation; Purification
- C01B17/906—Removal of mercury
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/70—Treatment of water, waste water, or sewage by reduction
- C02F1/705—Reduction by metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B43/00—Obtaining mercury
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Metallurgy (AREA)
- Water Supply & Treatment (AREA)
- Mechanical Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Removal Of Specific Substances (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Die Erfindung betrifft ein Verfahren zur Entfernung von Quecksilber aus arsenhaltiger Abfallschwefelsaeure. Bei einem Verfahren zur Entfernung von Quecksilber aus Schwefelsaeure durch Behandlung mit zerteiltem metallischem Kupfer, wird zwecks praktisch vollstaendiger Entfernung des Quecksilbers aus Abfallschwefelsaeure diese mit dendritischem Kupferpulver einer Fuelldichte von etwa 0,9 bis etwa 2,0 g/cm3 behandelt und das quecksilberhaltige Zementat abgetrennt. Die Behandlung wird bei einer Temperatur von 30 bis 85C vorgenommen.The invention relates to a method for removing mercury from arsenic-containing waste sulfuric acid. In a method for removing mercury from sulfuric acid by treatment with divided metallic copper, for the purpose of substantially complete removal of the mercury from waste sulfuric acid, it is treated with dendritic copper powder having a filling density of about 0.9 to about 2.0 g / cm 3 and the mercury-containing cementate is separated , The treatment is carried out at a temperature of 30 to 85C.
Description
1,10g/cm3versetztund lebhaft gerührt. Nach ca.20min Reaktionszeit ist das Quecksilber praktisch quantitativ ausgefällt. Der in derfeststoffhaltigen (Flugstaub) Abfallschwefelsäure anfallende Rückstand des Zementats wird abfiltriert und nach an sich bekannten Methoden auf Quecksilber aufgearbeitet.1.10 g / cm 3 and stirred vigorously. After ca.20min reaction time, the mercury is virtually quantitatively precipitated. The residue of the cementate obtained in the solids-containing (fly ash) waste sulfuric acid is filtered off and worked up to mercury by methods known per se.
Das erfindungsgemäße Verfahren weist eine Reihe von Vorteilen auf. Auf Grund der Stellung des Kupfers in der elektrochemischen Spannungsreihe wird die Bildung von toxischem Arsenwasserstoff während der Säurebehandlung vermieden. Die Reaktion ist in einem Rührbehälter ohne vorhergehende Filtration der Abfallschwefelsäure einfach durchzuführen. Des weiteren besitzt die Reaktionsflüssigkeit eine gute Filtrierbarkeit, da auch der suspendierte Feststoff, wie schlecht filtrierbarer Flugstaub, zusammen mit dem körnigen Zementatrückstand abgetrennt wird. Schließlich ist die Behandlung auch in quecksilberhaltigen Schwefelsäuren durchführbar, die Halogen- und Kupfer2+-lonen enthalten.The inventive method has a number of advantages. Due to the position of the copper in the electrochemical series, the formation of toxic arsenic hydrogen during acid treatment is avoided. The reaction is easy to carry out in a stirred tank without prior filtration of the waste sulfuric acid. Furthermore, the reaction liquid has a good filterability, since the suspended solid, such as poorly filterable flue dust, is separated together with the granular Zementatrückstand. Finally, the treatment can also be carried out in mercury-containing sulfuric acids which contain halogen and copper 2+ ions.
Die Erfindung wird anhand der nachstehenden Beispiele näher und beispielhaft erläutert.The invention will be explained in more detail and by way of example with reference to the following examples.
In diesem Beispiel wird die Abhängigkeit der Reaktionsgeschwindigkeit der Quecksilberfällung von der Schüttdichte des dendritischen Kupferpulvers veranschaulicht.In this example, the dependence of the rate of reaction of mercury precipitation on the bulk density of the dendritic copper powder is illustrated.
In 3 Rührbehältern wurden jeweils 1,51 einer Abfallschwefelsäure, enthaltend 23,5mg Hg/l, 16,75g Cl/1,650g H2SO4ZI, 12g As/l, 3,85 g Cu/I und 0,5 g/l Flugstaub, eingegeben und die Säure auf 80°C aufgeheizt. Sodann wurden unter lebhaftem Rühren jeweils 4,5g dendritisches Kupferpulver verschiedener Schüttdichte in die Rührbehälter eingegeben und die Quecksilberkonzentration (mg/1) in der Abfallschwefelsäure in Abhängigkeit von der Reaktionszeit (min) ermittelt. In der nachstehenden Tabelle 1 sind die Ergebnisse aufgeführt.1.51 g of waste sulfuric acid containing 23.5 mg Hg / l, 16.75 g Cl / 1.650 g H 2 SO 4 ZI, 12 g As / l, 3.85 g Cu / I and 0.5 g / each were added to 3 stirred tanks. l flue dust, and the acid is heated to 80 ° C. Then, with vigorous stirring, 4.5 g each of dendritic copper powder of various bulk density was added to the stirred tanks and the mercury concentration (mg / l) in the waste sulfuric acid was determined as a function of the reaction time (min). Table 1 below lists the results.
Dichte des Cu-Density of the Cu
Pulverspowder
0,95-1,10 g/cm3 0.95-1.10 g / cm 3
Reaktionszeit HgReaction time Hg
(min) (mg/l)(min) (mg / l)
0 23,50 23.5
10 4,410 4.4
30 0,0830 0.08
60 0,0460 0.04
120 0,03120 0.03
180 0,02180 0.02
Es zeigte sich, daß in ca. 60 min die Ausfällung des Quecksilbers im wesentlichen beendet ist, wenn dendritisches Kupferpujver einer Schüttdichte von 0,95 bis 1,10g/cm3 verwendet wird. Bei Verwendung von Kupferpulver einer Schüttdichte von 1,75 bis 2,15g/cm3 liegt zum gleichen Zeitpunkt noch etwa die 125fache Menge Quecksilber in der Säure vor.It was found that in about 60 minutes, the precipitation of mercury is substantially completed when dendritic copper powder of a bulk density of 0.95 to 1.10 g / cm 3 is used. When using copper powder having a bulk density of 1.75 to 2.15 g / cm 3 at the same time about 125 times the amount of mercury in the acid before.
In diesem Beispiel wird die Abhängigkeit der Reaktionsgeschwindigkeit der Quecksilberfällung von der Temperatur der Abfallschwefelsäure veranschaulicht. In der in Beispiel 1 beschriebenen Weise wurden drei Rührbehälter mit jeweils 1,51 Abfalischwefelsäure der Zusammensetzung wie in Beispiel 1 gefüllt. In die auf 20, 50 und 800C temperierten Säuren wurden jeweils 4,5g dendritisches Kupferpulver mit der Schüttdichte 1,95 bis 1,10g/cm3 unter lebhaftem Rühren eingegeben. In der Abfallschwefelsäure wurde die Quecksilberkonzentration in Abhängigkeit von der Reaktionszeit bestimmt. In der nachstehenden Tabelle 2 sind die Ergebnisse aufgeführt.In this example, the dependence of the reaction rate of mercury precipitation on the temperature of the waste sulfuric acid is illustrated. In the manner described in Example 1, three stirred tanks were each filled with 1.5 l of waste sulfuric acid of the composition as in Example 1. In the temperature-controlled at 20, 50 and 80 0 C respectively acids 4.5 g dendritic copper powder were entered with the bulk density of 1.95 to 1.10 g / cm 3 with vigorous stirring. In waste sulfuric acid, the mercury concentration was determined as a function of the reaction time. Table 2 below lists the results.
200C 50°C 80°C20 0 C 50 ° C 80 ° C
Reaktionszeit HgReaction time Hg
(min) (mg/l)(min) (mg / l)
0 27,50 27.5
10 18,310 18.3
20 17,820 17.8
45 17,545 17.5
60 17,260 17.2
120 15,4120 15.4
180 14,9180 14.9
Es zeigte sich, daß bei Verwendung eines dendritischen Kupferpu Ivers einer Schüttdichte von 0,95 bis 1,10 g/cm3 sowie bei einer Säuretemperatur von 8O0C die Quecksilberfällung nach 60 min praktisch beendet ist.It was found that when using a dendritic Kupferpu Ivers a bulk density of 0.95 to 1.10 g / cm 3 and at an acid temperature of 8O 0 C, the mercury precipitation is practically completed after 60 min.
In den Figuren 1 und 2 sind die Ergebnisse der Beispiele 1 resp. 2 in Diagrammen veranschaulicht. In Figures 1 and 2, the results of Examples 1 resp. 2 illustrated in diagrams.
Claims (2)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19863616792 DE3616792A1 (en) | 1986-05-17 | 1986-05-17 | METHOD FOR REMOVING MERCURY FROM ARSENIC WASTE SULFURIC ACID |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DD259639A5 true DD259639A5 (en) | 1988-08-31 |
Family
ID=6301127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DD87302641A DD259639A5 (en) | 1986-05-17 | 1987-05-11 | METHOD FOR REMOVING MERCURY FROM ARSENIC WASTE SOIL |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP0246677A1 (en) |
| JP (1) | JPS62279886A (en) |
| KR (1) | KR870011050A (en) |
| AU (1) | AU7299687A (en) |
| BR (1) | BR8702499A (en) |
| DD (1) | DD259639A5 (en) |
| DE (1) | DE3616792A1 (en) |
| FI (1) | FI871451A7 (en) |
| PL (1) | PL265673A1 (en) |
| PT (1) | PT84884B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4000216A1 (en) * | 1989-11-17 | 1991-05-23 | Wue Umwelt Engineering Gmbh | METHOD AND DEVICE FOR THE SEPARATION AND RECOVERY OF HIGH QUALITY METALS, ESPECIALLY PRECIOUS METALS AND MERCURY, FROM USED SOLUTIONS |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54133497A (en) * | 1978-04-10 | 1979-10-17 | Mitsui Mining & Smelting Co | Method of removing mercury from sulfuric acid |
-
1986
- 1986-05-17 DE DE19863616792 patent/DE3616792A1/en not_active Withdrawn
-
1987
- 1987-04-02 FI FI871451A patent/FI871451A7/en not_active Application Discontinuation
- 1987-04-03 EP EP87200626A patent/EP0246677A1/en not_active Withdrawn
- 1987-05-11 DD DD87302641A patent/DD259639A5/en unknown
- 1987-05-13 PL PL1987265673A patent/PL265673A1/en unknown
- 1987-05-15 AU AU72996/87A patent/AU7299687A/en not_active Abandoned
- 1987-05-15 PT PT84884A patent/PT84884B/en unknown
- 1987-05-15 BR BR8702499A patent/BR8702499A/en unknown
- 1987-05-16 KR KR870004913A patent/KR870011050A/en not_active Withdrawn
- 1987-05-16 JP JP62119971A patent/JPS62279886A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| KR870011050A (en) | 1987-12-19 |
| FI871451A0 (en) | 1987-04-02 |
| PL265673A1 (en) | 1988-04-28 |
| PT84884A (en) | 1987-06-01 |
| AU7299687A (en) | 1987-11-19 |
| DE3616792A1 (en) | 1987-11-19 |
| BR8702499A (en) | 1988-02-23 |
| FI871451L (en) | 1987-11-18 |
| EP0246677A1 (en) | 1987-11-25 |
| JPS62279886A (en) | 1987-12-04 |
| PT84884B (en) | 1989-07-13 |
| FI871451A7 (en) | 1987-11-18 |
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