Ferrous sulfate-antimony trisulfide composite liquid chromium removal agent as well as preparation method and application thereof

A technology of antimony trisulfide and ferrous sulfate, applied in the direction of improving process efficiency, etc., can solve problems such as unfavorable operator operation, unsatisfactory chromium reduction effect, unfavorable preservation and stability of chromium removal agent, etc.

Active Publication Date: 2022-03-22
安徽精公检测检验中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Composite liquid chromium remover has better chromium-reducing effect than single-type liquid chromium remover, but most of the composite liquid chromium removers in the prior art rely on the reduction of metal ions to reduce hexavalent chromium in cement , such a chromium reduction effect is still unsatisfactory
In addition, liquid chromium removal agents are mostly prepared using volatile ethanol solvents, which is not conducive to the preservation and stability of chromium removal agents; or DMF solvents with a relatively unpleasant smell, which is not conducive to the operation of operators.

Method used

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  • Ferrous sulfate-antimony trisulfide composite liquid chromium removal agent as well as preparation method and application thereof
  • Ferrous sulfate-antimony trisulfide composite liquid chromium removal agent as well as preparation method and application thereof
  • Ferrous sulfate-antimony trisulfide composite liquid chromium removal agent as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A ferrous sulfate-antimony trisulfide compound liquid chromium remover, which is composed of the following raw materials in mass percentage: 19% of ferrous sulfate heptahydrate, 13% of antimony trisulfide, 31% of water, and 5% of dimethyl sulfoxide , dextrin 32%.

[0027] The preparation method of described composite liquid chromium removal agent is:

[0028] A, formula quantity ferrous sulfate heptahydrate is dissolved in formula quantity water, obtains mixed solution one;

[0029] B, dissolving the antimony trisulfide of the formula quantity in the formula quantity dimethyl sulfoxide to obtain the mixed solution 2;

[0030] C. Add the mixed solution 2 into the mixed solution 1, stir evenly, then add the dextrin in the prescribed amount, and stir for 60 minutes to obtain the composite liquid chromium remover, which is a black pasty liquid.

Embodiment 2

[0032] A ferrous sulfate-antimony trisulfide composite liquid chromium remover, which is composed of the following raw materials in mass percentage: 18% of ferrous sulfate heptahydrate, 12% of antimony trisulfide, 31% of water, and 4% of dimethyl sulfoxide , dextrin 35%.

[0033] The preparation method of described composite liquid chromium removal agent is:

[0034] A, formula quantity ferrous sulfate heptahydrate is dissolved in formula quantity water, obtains mixed solution one;

[0035] B, dissolving the antimony trisulfide of the formula quantity in the formula quantity dimethyl sulfoxide to obtain the mixed solution 2;

[0036] C. Add the mixed solution 2 into the mixed solution 1, stir evenly, then add the dextrin in the prescribed amount, and stir for 60 minutes to obtain the composite liquid chromium remover, which is a black pasty liquid.

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Abstract

The invention discloses a ferrous sulfate-antimony trisulfide composite liquid chromium removal agent as well as a preparation method and application thereof. The composite liquid chromium removal agent comprises the following raw materials in percentage by mass: 18%-19% of ferrous sulfate heptahydrate, 12%-13% of antimony trisulfide, 31%-32% of water, 4%-5% of an organic solvent and 32%-35% of dextrin. The ferrous sulfate-antimony trisulfide composite liquid chromium removal agent with high stability and good chromium removal effect is prepared by taking ferrous sulfate heptahydrate and antimony trisulfide as reducing agents, water and an organic solvent as solvents and dextrin as a stabilizer. And adverse effects on chemical components, standard consistency, setting time, stability and fineness of the cement are avoided.

Description

technical field [0001] The invention belongs to the technical field of chromium removal agents, and in particular relates to a ferrous sulfate-antimony trisulfide composite liquid chromium removal agent and its preparation method and application. Background technique [0002] Cement chromium reducer is mainly used in cement production to reduce hexavalent chromium in cement to trivalent chromium, thereby reducing the content of hexavalent chromium in cement. The country issued a mandatory national standard GB31893-2015 in 2016, which clearly limits the content of hexavalent chromium in cement to no more than 10mg / kg. [0003] Composite liquid chromium remover has better chromium-reducing effect than single-type liquid chromium remover, but most of the composite liquid chromium removers in the prior art rely on the reduction of metal ions to reduce hexavalent chromium in cement , such a chromium-reducing effect is still unsatisfactory. And the liquid chromium removal agent ...

Claims

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Application Information

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IPC IPC(8): C04B24/38
CPCC04B40/0039C04B22/149C04B22/14C04B24/16C04B24/38Y02P10/20
Inventor 李保军徐文祥肖慧丽轩红钟黄爱斌王圣娜卢海军王莹刘梦雪丁松燕徐雪玲汪萍张亚楠王一健沈江平黄士伟沈笑天
Owner 安徽精公检测检验中心有限公司
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