SU551250A1 - Method for precipitating arsenic from solutions - Google Patents

Method for precipitating arsenic from solutions

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Publication number
SU551250A1
SU551250A1 SU2030741A SU2030741A SU551250A1 SU 551250 A1 SU551250 A1 SU 551250A1 SU 2030741 A SU2030741 A SU 2030741A SU 2030741 A SU2030741 A SU 2030741A SU 551250 A1 SU551250 A1 SU 551250A1
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SU
USSR - Soviet Union
Prior art keywords
solutions
mouse
precipitating
sulfate
solution
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Application number
SU2030741A
Other languages
Russian (ru)
Inventor
Абдилязиз Джантуреев
Original Assignee
Институт Металлургии И Обогащения Ан Казахской Сср
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Application filed by Институт Металлургии И Обогащения Ан Казахской Сср filed Critical Институт Металлургии И Обогащения Ан Казахской Сср
Priority to SU2030741A priority Critical patent/SU551250A1/en
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Publication of SU551250A1 publication Critical patent/SU551250A1/en

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Description

(54) СПОСОБ ОСАЖДЕНИЯ МЫШЬЯКА ИЗ РАСТВОРОВ(54) METHOD FOR DEPOSITING ARYSIL FROM SOLUTIONS

1one

Изобретение относ итс  к способу осаждени  мышь ка из растворов и может быть использовано при очистке сточных вод.The invention relates to a method for precipitating a mouse from solutions and can be used in wastewater treatment.

Известен способ осаждени  мышь ка из растаоров путем обработки их сульфатом титана в кислой среде (рН ;0,4-0,7). Степень извлечени  мышь ка составл ет 97%. Недостатком этого способа  вл етс  низка  стенень извлечени  мышь ка.There is a known method for precipitating mice from solutions by treating them with titanium sulfate in an acidic medium (pH; 0.4-0.7). The recovery rate of the mouse is 97%. The disadvantage of this method is the low extraction wall of the mouse.

Известен также способ осаждени  мь1шь ка из растворов, содержащих сульфид натри , в частаоста падросульфид натри , путем обрботки их сульфатами металлов (сульфатом меди) при концентрации их до 5 г/л при одновременном пропускании сероводорода, процесс ведут при температуре 25-60С и рН раствора 0,1. Недостатком этого способа  вл етс  его продолжительность (1-4часа), а также низка  степень извлечени  мышь ка из сульфиднокарбонатных (щелочных) растворов. Так, при обработке таких растворов (отношение сульфата меди к сульфиду натри  равно 1,64-1,69) степень извлечени  мышь ка не превышает 80% при продолжительности обработки 2 часа при температуре 35° С.There is also known a method of precipitating the mucous from solutions containing sodium sulfide, in particular sodium padrosulfide, by treating them with metal sulfates (copper sulfate) at a concentration of up to 5 g / l while simultaneously passing hydrogen sulfide, the process is carried out at a temperature of 25-60 ° C and pH 0.1. The disadvantage of this method is its duration (1-4 hours), as well as the low degree of extraction of arsenic from sulfide-carbonate (alkaline) solutions. Thus, when processing such solutions (the ratio of copper sulfate to sodium sulfide is 1.64-1.69), the degree of recovery of the mouse does not exceed 80% with a treatment time of 2 hours at 35 ° C.

С целью интенсификации процесса и псзышени  степени извлечени  мышь ка, предложено н качестве сульфата металла использовать сульфат железа при весовом соотношении его к сульфиду натри  1,10-1,60, предпочтительно 1,48-1,5 6, процесс вести при рН раствора 7,9-9,0 и температуре 61-100° С, предпочтительно70-90° С, ..In order to intensify the process and to extract the degree of arsenic extraction, it is proposed to use iron sulfate as a metal sulfate with a weight ratio of sodium to sodium sulfide of 1.10-1.60, preferably 1.48-1.5 6, the process should be carried out at a pH of 7 , 9-9.0 and a temperature of 61-100 ° C, preferably 70-90 ° C, ..

Предложенный способ позвол ет интенсифицировать процесс, сократить продолжительность до 5 минут и повысить степень извлечени  мышь ка до 98,9-99,6%. .The proposed method allows to intensify the process, shorten the duration to 5 minutes and increase the recovery of the mouse to 98.9-99.6%. .

Н р и м е р. К сульфидно-карбонатцому раствору состава, г/л: сульфид натрт  78,0, сода 63,6 и мышь к 3,0 приливают водный раствор сульфата железа (1 часть железного купороса на 2 части воды). Содержание сульфида железа в растворе составл ет 120,1 г/л. Процесс осаждени  ведут: прк 70°С, рН раствора 8,0, продолжительность 5 минут. В процессе осаждени  раствор перемешивают (скорость мешалки 600-700 об/мин). После этого раствор фильтруют. Извлечение мышь ка в осадок - 99,6%. Содержание М1 1шь ка в маточном растворе 0,010 г/л.N p and meer. To a sulphide-carbonate solution of the composition, g / l: sulphide soda 78.0, soda 63.6 and mouse to 3.0, an aqueous solution of ferrous sulphate is poured (1 part of ferrous sulfate to 2 parts of water). The iron sulfide content in the solution is 120.1 g / l. The deposition process is carried out: prc 70 ° C, the pH of the solution is 8.0, the duration is 5 minutes. In the process of precipitation, the solution is stirred (stirrer speed 600-700 rpm). After that, the solution is filtered. Removing the mouse precipitate - 99.6%. The content of M1 is 1 ka in the stock solution of 0.010 g / l.

Claims (1)

Формула изобретени . Способ осаждени  мышь ка из растворов,содержащих сульфид натри  путем обработки их сульфатом металла при нагревании отличаю34Claims. The method of precipitating the mouse from solutions containing sodium sulfide by treating them with metal sulfate when heated is different. щийс  тем, что;сиелыоишенсификациипроцес-натри  I.lО-1,60, предпочтительно 1,48-1,56, проса и повышени  степени изшлечени  продукта, вцесс ведут при рН раствора 7,9-10,0, предпочтителькачестае сульфата металла используют сульфат же-но 7,9-9,0, и температуре 61-100°С, предпочтительлеза при весовом соотношении его к сульфидуно 70-90 С.due to the fact that the I.lO-1.60 sodium process, preferably 1.48-1.56, of millet and an increase in the product recovery rate, the process is carried out at a pH of 7.9-10.0, the sulfate the same but 7.9–9.0, and a temperature of 61–100 ° C, preferably at a weight ratio of 70–90 ° C to sulfidane. 551250 551250
SU2030741A 1974-06-06 1974-06-06 Method for precipitating arsenic from solutions SU551250A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU2030741A SU551250A1 (en) 1974-06-06 1974-06-06 Method for precipitating arsenic from solutions

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Application Number Priority Date Filing Date Title
SU2030741A SU551250A1 (en) 1974-06-06 1974-06-06 Method for precipitating arsenic from solutions

Publications (1)

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SU551250A1 true SU551250A1 (en) 1977-03-25

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SU2030741A SU551250A1 (en) 1974-06-06 1974-06-06 Method for precipitating arsenic from solutions

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5252003A (en) * 1990-10-29 1993-10-12 International Technology Corporation Attenuation of arsenic leaching from particulate material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5252003A (en) * 1990-10-29 1993-10-12 International Technology Corporation Attenuation of arsenic leaching from particulate material

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