SU1745676A1 - Process for recovering arsenic from sulfuric acid solution - Google Patents
Process for recovering arsenic from sulfuric acid solution Download PDFInfo
- Publication number
- SU1745676A1 SU1745676A1 SU904786440A SU4786440A SU1745676A1 SU 1745676 A1 SU1745676 A1 SU 1745676A1 SU 904786440 A SU904786440 A SU 904786440A SU 4786440 A SU4786440 A SU 4786440A SU 1745676 A1 SU1745676 A1 SU 1745676A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- mouse
- arsenic
- sulfuric acid
- acid solution
- sulfide
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 229910052785 arsenic Inorganic materials 0.000 title abstract description 6
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 title abstract description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 title description 4
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 11
- 229910002651 NO3 Inorganic materials 0.000 claims abstract description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims abstract description 3
- -1 nitrate ions Chemical class 0.000 claims abstract description 3
- 229910021653 sulphate ion Inorganic materials 0.000 claims abstract description 3
- 239000002244 precipitate Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 10
- UKUVVAMSXXBMRX-UHFFFAOYSA-N 2,4,5-trithia-1,3-diarsabicyclo[1.1.1]pentane Chemical compound S1[As]2S[As]1S2 UKUVVAMSXXBMRX-UHFFFAOYSA-N 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- DVARTQFDIMZBAA-UHFFFAOYSA-O ammonium nitrate Chemical class [NH4+].[O-][N+]([O-])=O DVARTQFDIMZBAA-UHFFFAOYSA-O 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-M hydrosulfide Chemical compound [SH-] RWSOTUBLDIXVET-UHFFFAOYSA-M 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical class [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- C01B17/907—Removal of arsenic
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G28/00—Compounds of arsenic
- C01G28/008—Sulfides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
Изобретение относитс к способам извлечени мышь ка из сернокислых растворов и может быть использовано дл очистки растворов гидрометаллургических производств . Цель изобретени - сокращение продолжительности процесса. Способ осуществл етс путем обработки мышь косо- держащего раствора сульфидным реагентом в присутствии нитрат-ионов в количестве 0,2 - 0,5 г.экв/л. Степень извлечени мышь ка составл ет 99,84%. 1 табл.The invention relates to methods for recovering arsenic from sulphate solutions and can be used for cleaning solutions of hydrometallurgical production. The purpose of the invention is to reduce the duration of the process. The method is carried out by treating the mouse with an acous-containing solution with a sulphide reagent in the presence of nitrate ions in an amount of 0.2–0.5 gEq / l. The recovery rate of the mouse is 99.84%. 1 tab.
Description
Изобретение относитс к способам извлечени мышь ка из растворов и может быть использовано в процессах очистки растворов гидрометаллургических производств .The invention relates to methods for removing arsenic from solutions and can be used in the process of cleaning solutions of hydrometallurgical production.
Известен способ осаждени мышь ка из кислых растворов сульфидным реагентом в закрытом реакторе с получением п тисер- нистового мышь ка и отделением полученного продукта.There is a known method of precipitating an arsenic from acidic solutions with a sulfide reagent in a closed reactor to obtain a grained arsenic and separating the obtained product.
Недостатком способа вл ютс высока продолжительность процесса и обусловленный высокий продолжительностью контакта сернокислого раствора с сульфидным реагентом перерасход последнего на побочные процессы разложени .The disadvantage of the method is the high duration of the process and due to the high duration of the contact of the sulphate solution with the sulfide reagent overrun of the latter on the side processes of decomposition.
Цель сокращени -сокращение продолжительности процесса.The purpose of the reduction is the shortening of the process time.
Поставленна цель достигаетс тем, что в способе извлечени мышь ка из растворов , включающем обработку раствора сульфидным реагентом и отделение осадка сульфида мышь ка, обработку мышь ксо- держащего раствора сульфидным реагентом ведут в присутствии нитрат-ионов.This goal is achieved by the fact that in the method of removing the mouse from solutions, which includes treating the solution with a sulfide reagent and separating the arsenic sulphide precipitate, the mouse with a solution containing sulfide reagent is treated in the presence of nitrate ions.
Способ осуществл ют следующим образом .The method is carried out as follows.
Дл испытаний используют сбросные растворы рафинировочного производства, содержащие 18,5 г/л мышь ка (в виде мышь ковой кислоты), и 189,8 г/л серной кислоты. В качестве сульфидного реагента используют сернистый натрий, кислый сернистый натрий (гидросульфид) и их смесь в виде растворов с содержанием сульфид- ионов 67,3 г/л. В качестве активирующей добавки используют нитраты натри , аммони и их смеси. Осаждение провод т в закрытом реакторе с рабочей емкостью 1 л, оборудованном лини ми подачи раствора сульфидного реагента и слива суспензии продукта гидрозатвором дл стравливани и возвращени в процесс избыточного количества сероводорода на случай ошибочной передозировки сульфидного реагента. В реактор заливают исходный раствор с заданным количеством нитратов натри и/или аммони и при перемешивании ввод т раствор сульфидного реагента до окончани с процесса образовани сульфида мышь ка, определ емого по прекращению поглощени сероводорода. По окончании процесса суспензию сливают и заполн ют реактор новой порцией мышь косодержащего pacesFor testing, refining production waste solutions containing 18.5 g / l mouse (in the form of mouse acid) and 189.8 g / l sulfuric acid are used. Sulfuric sodium, acidic sodium sulphide (hydrosulfide) and their mixture in the form of solutions with a sulfide ion content of 67.3 g / l are used as the sulfide reagent. Sodium nitrates, ammonium nitrates and their mixtures are used as an activating additive. The deposition is carried out in a closed reactor with a working capacity of 1 liter, equipped with supply lines for the sulfide reagent solution and draining the slurry of the product with a hydraulic lock to release and return to the process an excess amount of hydrogen sulfide in case of an erroneous overdose of the sulfide reagent. A stock solution with a predetermined amount of sodium and / or ammonium nitrates is poured into the reactor and the sulphide reagent solution is introduced with stirring until it is finished with the arsenic sulphide formation process, which is determined by stopping the absorption of hydrogen sulfide. At the end of the process, the suspension is drained and the reactor is filled with a new portion of mouse-containing paces
JJ
vjvj
&&
О VIAbout VI
OsOs
твора. Суспензию выдерживают в течение 5 ч дл коагул ции коллоидных форм сульфида мышь ка и отдел ют осадок фильтрацией . Осадок промывают, сушат. Маточный раствор с содержанием мышь ка 0,03 г/л используют дл элюировани натрий-катио- нитовых фильтров с последующим доизвле- чением мышь ка до ПДК железосульфидным методом и выделением сульфата натри из очищенного элюата. Температура суспензии в процессе осаждени не превышает исходной (комнатной) 16 - 37°С. Степень извлечени мышь ка 99,84% на стадии извлечени сульфида мышь ка, 99,9998% на стадии доиз- влечени до ПДК.of the creature. The suspension is kept for 5 hours to coagulate the colloidal forms of arsenic sulphide and the precipitate is separated by filtration. The precipitate is washed, dried. The mother liquor with an arsenic content of 0.03 g / l is used to elute the sodium-cation filter, followed by additional extraction of the mouse before MPC by the iron-sulphide method and separation of sodium sulfate from the purified eluate. The temperature of the suspension during the precipitation does not exceed the initial (room) 16 - 37 ° C. The degree of extraction of the mouse is 99.84% at the stage of extraction of the sulfide of the mouse, 99.9998% at the stage of additional recovery before the MPC.
Результаты представлены в таблице в сопоставлении с результатами известного способа.The results are presented in the table in comparison with the results of the known method.
. Как показали результаты испытаний, предлагаемый способ обеспечивает утили- . As shown by the test results, the proposed method provides utilities
зацию сбросных нитратов, снижение расхода реагента до стехиометрического и снижение продолжительности процесса до 56 мин против 62 мин по известному способу, или на 9,7% с соответствующим повышением производительности процесса.discharge of nitrates, reducing the reagent consumption to stoichiometric and reducing the duration of the process to 56 minutes versus 62 minutes by a known method, or by 9.7% with a corresponding increase in the productivity of the process.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU904786440A SU1745676A1 (en) | 1990-01-25 | 1990-01-25 | Process for recovering arsenic from sulfuric acid solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU904786440A SU1745676A1 (en) | 1990-01-25 | 1990-01-25 | Process for recovering arsenic from sulfuric acid solution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1745676A1 true SU1745676A1 (en) | 1992-07-07 |
Family
ID=21493607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU904786440A SU1745676A1 (en) | 1990-01-25 | 1990-01-25 | Process for recovering arsenic from sulfuric acid solution |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1745676A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2312820C1 (en) * | 2006-05-10 | 2007-12-20 | Олег Григорьевич Передерий | Method of cleaning arsenic-polluted solvents |
-
1990
- 1990-01-25 SU SU904786440A patent/SU1745676A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Патент US №3216787, кл. С 01 В 17/90, 1967. * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2312820C1 (en) * | 2006-05-10 | 2007-12-20 | Олег Григорьевич Передерий | Method of cleaning arsenic-polluted solvents |
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