Method for leaching antimony oxide materials and electrodeposition-producing metalic antimony through tartaric acid system

A technology of tartaric acid and antimony oxide, which is applied in the improvement of process efficiency, photography process, instruments, etc., can solve problems such as corrosion, and achieve the effect of less reagent consumption, less corrosiveness, and clean extraction.

Active Publication Date: 2019-12-31
合肥龙之韵医药技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The acid method is mainly used for the production of antimony white by the chlorination-hydrolysis method, and there are problems of solution recycling and equipment anticorrosion. The new factory will be severely corroded within two to three years.

Method used

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  • Method for leaching antimony oxide materials and electrodeposition-producing metalic antimony through tartaric acid system
  • Method for leaching antimony oxide materials and electrodeposition-producing metalic antimony through tartaric acid system
  • Method for leaching antimony oxide materials and electrodeposition-producing metalic antimony through tartaric acid system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] This embodiment provides a method for leaching antimony oxide materials with tartaric acid system and producing antimony metal by electrowinning. The process flow chart is as attached figure 1 shown. The antimony oxide material used as the test raw material is obtained by oxidation and roasting of antimony sulfide concentrate, and its composition (wt.%) is: Sb 79.36, S 0.34, Fe 0.13, As 0.07, Pb 0.06, SiO 2 0.58, CaO 1.02; Tartaric acid, potassium hydrogen tartrate, and sodium hydrogen tartrate used as leaching agents are all industrial pure grades, and are prepared to the required concentration by adding water.

[0043] Specifically include the following steps:

[0044] S1. Leaching: Weigh 100g of antimony oxide powder of the above ingredients, add 800mL of tartaric acid-sodium hydrogen tartrate leaching solution according to the liquid-solid ratio of 8:1, wherein the total concentration of tartrate groups is 150g / L, and the molar ratio of tartaric acid to sodium hydr...

Embodiment 2

[0049] This embodiment provides a method for leaching antimony oxide materials with tartaric acid system and producing antimony metal by electrowinning. The process flow chart is as attached figure 1 shown. The antimony oxide material used as the experimental raw material is the same as that in Example 1, and the leaching solution used is prepared from the electrowinning solution obtained in step S3 in Example 1.

[0050] Specifically include the following steps:

[0051] S1. Leaching: Weigh 100g of antimony oxide powder of the above ingredients, add 600mL of the electrowinning solution of Example 1 according to the liquid-solid ratio of 6:1, and add 10g of tartaric acid, at a temperature of 70°C and a stirring speed of 800rpm After reacting for 1 hour, the supernatant and the final slag were separated by filtration to obtain 8.3 g of slag. After analysis, the final slag contained 12.09% of antimony, and the leaching rate of antimony was calculated to be 98.74%.

[0052] S2....

Embodiment 3

[0055] This embodiment provides a method for leaching antimony oxide materials with tartaric acid system and producing antimony metal by electrowinning. The process flow chart is as attached figure 1 shown. The antimony oxide material used as the experimental raw material is the same as that in Example 1, and the leaching solution used is prepared from the electrowinning solution obtained in Step S3 in Example 2.

[0056] Specifically include the following steps:

[0057] S1. Leaching: Weigh 100g of antimony oxide powder of the above ingredients, add 400mL of the electrolytic solution in Example 2 according to the liquid-solid ratio of 4:1, and add 2g of tartaric acid, at a temperature of 40°C and a stirring speed of 400rpm After reacting for 3 hours, the supernatant and the final slag were separated by filtration to obtain 11.6 g of slag. After analysis, the final slag contained 36.66% of antimony, and the leaching rate of antimony was calculated to be 94.64%.

[0058] S2. ...

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Abstract

The invention belongs to the field of nonferrous metallurgy, and particularly discloses a method for leaching antimony oxide materials and electrodeposition-producing metalic antimony through a tartaric acid system. The method includes the steps that firstly, the antimony oxide materials are subjected to clean leaching with tartaric acid-sodium tartrate, antimony-rich leachate and leaching residues are obtained, the leachate is cooled, subjected to impurity removal and purified, purified liquid is subjected to diaphragm electrodeposition to electro-deposite the antimony, antimony pieces and tartaric acid electrolyte are obtained, and the obtained electrolyte returns to leach antimony oxide. The process is a novel separation and extraction method for the antimony oxide materials, strong acid and strong alkali adopted in the traditional process are omitted, the more moderate and edible tartaric acid system is adopted, equipment corrosion is reduced, the production environment is improved, the recovery rate of the antimony reaches 96% or above, and clean extraction of all antimony oxide resources can be achieved.

Description

technical field [0001] The invention belongs to the field of non-ferrous metal metallurgy, and more specifically relates to a method for leaching antimony oxide materials with a tartaric acid system and producing metal antimony by electrowinning. Background technique [0002] Antimony is a rare heavy metal, which is widely used in the fields of alloy materials, chemical flame retardant, and building materials. It has been mined and smelted for more than 100 years. The raw materials for smelting antimony are mainly sulfide ore. During the smelting process of bismuth, antimony-containing soot will be produced, mainly antimony oxide. At present, the main production method is still the blast furnace volatilization roasting (smelting)-reduction smelting process that has been used for more than 50 years. This process has strong adaptability to raw materials, is suitable for processing high-grade antimony concentrates, and produces low-concentration SO 2 Disadvantages such as flue...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B30/02C22B3/16C25C1/22
CPCC22B3/165C22B30/02C25C1/22Y02P10/20
Inventor 叶龙刚欧阳臻刘凌博胡宇杰夏志美肖利
Owner 合肥龙之韵医药技术有限公司
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