CN102965507A - One-step two-stage method for removing cadmium ion in high-cadmium zinc sulfate solution - Google Patents

One-step two-stage method for removing cadmium ion in high-cadmium zinc sulfate solution Download PDF

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Publication number
CN102965507A
CN102965507A CN2012104266946A CN201210426694A CN102965507A CN 102965507 A CN102965507 A CN 102965507A CN 2012104266946 A CN2012104266946 A CN 2012104266946A CN 201210426694 A CN201210426694 A CN 201210426694A CN 102965507 A CN102965507 A CN 102965507A
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CN
China
Prior art keywords
cadmium
solution
zinc sulfate
cadmium ion
ion
Prior art date
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Pending
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CN2012104266946A
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Chinese (zh)
Inventor
张红英
周大明
王明祥
张后云
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TONGLING CITY XIANGYING ZINC INDUSTRY Co Ltd
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TONGLING CITY XIANGYING ZINC INDUSTRY Co Ltd
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Application filed by TONGLING CITY XIANGYING ZINC INDUSTRY Co Ltd filed Critical TONGLING CITY XIANGYING ZINC INDUSTRY Co Ltd
Priority to CN2012104266946A priority Critical patent/CN102965507A/en
Publication of CN102965507A publication Critical patent/CN102965507A/en
Pending legal-status Critical Current

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    • 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

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  • Manufacture And Refinement Of Metals (AREA)

Abstract

The invention discloses a one-step two-stage method for removing cadmium ion in a high-cadmium zinc sulfate solution. The method comprises the specific steps of: first detecting and calculating the total amount of cadmium in zinc sulfate solution of a unit volume; then adding a specific vulcanizing agent with a same molar quantity to remove most cadmium ion in the solution; and then adding a small amount of zinc powder to remove trace cadmium ion and other ions failed to be removed in the previous step, so as to realize the purpose of purification. The method enables the cadmium ions in the solution to be removed to within 0.1 mg / l, realizes ideal effect, greatly reduces the production cost and avoids pollution.

Description

An a kind of step two-stage method of removing cadmium ion in the high cadmium solution of zinc sulfate
Technical field
The present invention relates to an a kind of step two-stage method of removing cadmium ion in the high cadmium solution of zinc sulfate, belong to chemical technology field.
Background technology
Except being arranged, plumbous zinc also has a large amount of copper and cadmium in the plumbous zinc gray, after dilute sulphuric acid leached, wherein cadmium ion also entered liquid thereupon, and domestic manufacturer removes cadmium with zinc replacement under the condition that heats up now, this method not only needs a large amount of zinc powders, and the temperature that also will raise consumes the energy.Not only increased production cost but also caused topsoil, and treatment effect is also not satisfactory.For solving my company of this difficult problem through for many years conscientiously research, successfully develop and under natural normal temperature condition, take a step two-stage method successfully the cadmium ion in the high cadmium zinc sulfate effectively to be removed.
Summary of the invention
The objective of the invention is for the deficiencies in the prior art, a step two-stage method of removing cadmium ion in the high cadmium solution of zinc sulfate under a kind of natural normal temperature is provided.
The technical solution used in the present invention is as follows:
An a kind of step two-stage method of removing cadmium ion in the high cadmium solution of zinc sulfate is characterized in that may further comprise the steps:
(1) utilizes the molal quantity of cadmium ion in the concentration of cadmium ion in the concentration of cadmium ions determinator testing process solution and the Units of Account volume solution of zinc sulfate, the PH to 5.0-5.5 of regulator solution, in the unit volume solution of zinc sulfate adding wait mole number specific vulcanizing agent SDD, be equivalent to the diatomite of solution of zinc sulfate 1-2%, the hydrogen peroxide of 2-3%, make it and cadmium ion is participated in reaction;
(2) add again a small amount of zinc powder in the solution and keep 20-30min, rapidly liquid is carried out press filtration after reaction finishes and separate and get final product.
The mol ratio of described zinc powder and cadmium ion is 2-3:1
The aforesaid method reaction equation is as follows:
（CH 3） 2NCS 2Na?+?Cd 2+-----→?（CH 3） 2NCS 2Cd?↓+?Na +
Zn?+?Cd 2+-----→Zn 2+?+?Cd↓
Beneficial effect of the present invention:
The present invention carries out under natural normal temperature except cadmium, need not to consume the energy, and required zinc powder amount is few, has not only greatly saved production cost but also avoided causing of polluting.This method can make the cadmium ion in the solution remove to the 0.1mg/L scope, and effect is very good.
Embodiment
Embodiment
The concentration of utilizing the concentration of cadmium ions determinator to record cadmium ion in the high cadmium solution of zinc sulfate is 0.736g/L, the molar weight of cadmium ion is 0.0035mol in every liter of solution of zinc sulfate, the PH to 5.0 of regulator solution, add the specific vulcanizing agent SDD of 0.0035mol in every liter of solution of zinc sulfate, be equivalent to the diatomite of solution of zinc sulfate 1%, 2% hydrogen peroxide, make it and cadmium ion is participated in reaction; The zinc powder that adds 0.455g in the solution is again kept 20-30min, rapidly liquid is carried out press filtration after reaction finishes and separates and get final product.
After testing, cadmium ion is removed to 0.08mg/L in the solution of zinc sulfate that process the inventive method was processed, and effect is very good.

Claims (2)

1. step two-stage method of removing cadmium ion in the high cadmium solution of zinc sulfate is characterized in that may further comprise the steps:
(1) utilizes the molal quantity of cadmium ion in the concentration of cadmium ion in the concentration of cadmium ions determinator testing process solution and the Units of Account volume solution of zinc sulfate, the PH to 5.0-5.5 of regulator solution, in the unit volume solution of zinc sulfate adding wait mole number specific vulcanizing agent SDD, be equivalent to the diatomite of solution of zinc sulfate 1-2%, the hydrogen peroxide of 2-3%, make it and cadmium ion is participated in reaction;
(2) add again a small amount of zinc powder in the solution and keep 20-30min, rapidly liquid is carried out press filtration after reaction finishes and separate and get final product.
2. a step two-stage method of removing cadmium ion in the high cadmium solution of zinc sulfate according to claim 1 is characterized in that the mol ratio of described zinc powder and cadmium ion is 2-3:1.
CN2012104266946A 2012-10-31 2012-10-31 One-step two-stage method for removing cadmium ion in high-cadmium zinc sulfate solution Pending CN102965507A (en)

Priority Applications (1)

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CN2012104266946A CN102965507A (en) 2012-10-31 2012-10-31 One-step two-stage method for removing cadmium ion in high-cadmium zinc sulfate solution

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Application Number Priority Date Filing Date Title
CN2012104266946A CN102965507A (en) 2012-10-31 2012-10-31 One-step two-stage method for removing cadmium ion in high-cadmium zinc sulfate solution

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110592376A (en) * 2018-06-12 2019-12-20 济源市华信科技有限公司 Preparation method and application of zinc hydrometallurgy purifying and cobalt removing agent

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US4240826A (en) * 1979-09-13 1980-12-23 Texasgulf Inc. Process for the recovery of arsenic as a zinc arsenate and its _utilization in the purification of zinc plant electrolytes
JP2007270262A (en) * 2006-03-31 2007-10-18 Dowa Holdings Co Ltd Method for collecting indium
CN101157988A (en) * 2007-10-30 2008-04-09 云南亚太环境工程设计研究有限公司 Method for purifying zinc sulfate solution
CN102071318A (en) * 2011-01-25 2011-05-25 云南冶金集团股份有限公司 Purification method of zinc sulfate leaching liquid
CN101743202B (en) * 2007-07-13 2012-07-04 同和金属矿业有限公司 Method of treating copper-arsenic compound
CN102583563A (en) * 2011-01-10 2012-07-18 常开军 Manufacturing method of ultra-pure battery-grade manganese chloride for battery material

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4240826A (en) * 1979-09-13 1980-12-23 Texasgulf Inc. Process for the recovery of arsenic as a zinc arsenate and its _utilization in the purification of zinc plant electrolytes
JP2007270262A (en) * 2006-03-31 2007-10-18 Dowa Holdings Co Ltd Method for collecting indium
CN101743202B (en) * 2007-07-13 2012-07-04 同和金属矿业有限公司 Method of treating copper-arsenic compound
CN101157988A (en) * 2007-10-30 2008-04-09 云南亚太环境工程设计研究有限公司 Method for purifying zinc sulfate solution
CN102583563A (en) * 2011-01-10 2012-07-18 常开军 Manufacturing method of ultra-pure battery-grade manganese chloride for battery material
CN102071318A (en) * 2011-01-25 2011-05-25 云南冶金集团股份有限公司 Purification method of zinc sulfate leaching liquid

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《铅锌冶金学》编委会: "《铅锌冶金学》", 31 March 2003, 科学出版社, article "电积法生产金属镉", pages: 705 *
孟凡杓，陈咏祯: "《有色金属工业固体废弃物的处理与利用》", 31 May 1991, 中国有色金属工业总公司环境保护情报网, article "铜烟尘的综合利用", pages: 79 *
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110592376A (en) * 2018-06-12 2019-12-20 济源市华信科技有限公司 Preparation method and application of zinc hydrometallurgy purifying and cobalt removing agent
CN110592376B (en) * 2018-06-12 2021-09-21 济源市华信科技有限公司 Preparation method and application of zinc hydrometallurgy purifying and cobalt removing agent

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Application publication date: 20130313