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Improved copper sulphate production technology

A production process and a copper sulfate technology, which are applied in the field of improved copper sulfate production processes, can solve the problems of high content of copper sulfate impurities and complicated production process of copper sulfate, and achieve the effects of reducing the content of remaining impurities and reducing production costs.

Active Publication Date: 2017-05-31
HENGYANG YISHUN CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the existing copper sulfate production process is complex, and the copper sulfate contains more impurities

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of improved copper sulfate production technique, comprises the steps:

[0023] (1) Grind sponge copper to 50 mesh, and then react with high acid solution at 50°C to prepare a solution containing 95g / L of copper ions;

[0024] (2) Add sulfuric acid solution to the solution obtained in step (1), dilute to a copper ion content of 55g / L, and then use an organic extractant to extract the solution. The organic extractant is unsaponified P205 sulfonated kerosene, organic The volume ratio of reagent to water phase is 5:1;

[0025] (3) Add the extract from step (2) to wash with hydrochloric acid, the concentration of hydrochloric acid is 1.7mol / L, adjust the pH to 2.5, and the washed hydrochloric acid is stripped and reused with unsaponified P205 sulfonated kerosene;

[0026] (4) Back-extract the organic phase with industrial dilute sulfuric acid. The concentration of industrial dilute sulfuric acid is 10wt%. The ball removes the oil from the back-extraction solution, a...

Embodiment 2

[0028] A kind of improved copper sulfate production technique, comprises the steps:

[0029] (1) Grind sponge copper to 70 mesh, and then react with high acid solution at 75°C to prepare a solution containing 100g / L of copper ions;

[0030] (2) Add sulfuric acid solution to the solution obtained in step (1), dilute to a copper ion content of 59g / L, and then use an organic extractant to extract the solution. The organic extractant is unsaponified P205 sulfonated kerosene, organic The volume ratio of reagent to water phase is 5:1;

[0031] (3) Add the extract from step (2) to wash with hydrochloric acid, the concentration of hydrochloric acid is 1.9mol / L, adjust the pH to 3.5, and the washed hydrochloric acid is stripped and reused with unsaponified P205 sulfonated kerosene;

[0032] (4) Back-extract the organic phase with industrial dilute sulfuric acid. The concentration of industrial dilute sulfuric acid is 15wt%. The ball removes the oil from the back-extraction solution, ...

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Abstract

The invention relates to an improved copper sulphate production technology. The production technology comprises the following steps: grinding copper sponge to 50-70 meshes, reacting the copper sponge and a high acid solution at temperature of 50 DEG C to prepare a solution containing 95-100 g / L of copper ions; adding a sulfuric acid solution in the solution, diluting the materials to the copper ion content of 55-59 g / L, then employing an organic extractant for extracting the solution, wherein the volume ratio of the organic reagent to a water phase is 5:1; adding hydrochloric acid in the extract for washing, adjusting the pH value to 2.5-3.5; using industrial diluted sulfuric acid for performing back extraction on an organic phase, controlling the copper content in strip liquor to no greater than 80 g / L; splitting the phase, using fiber microspheres to remove oil of the strip liquor, concentrating the strip liquor to obtain concentrated liquid with copper content of 230 g / L, and performing concentrate and crystallization on the solution to obtain the copper sulphate product. The production technology can greatly reduce the content of other impurity in the final product, can repeatedly reuse the used reagent, and reduces the production cost.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and specifically refers to an improved copper sulfate production process. Background technique [0002] The production of feed copper sulfate in my country is also relatively small, and a considerable part of the quality cannot meet the requirements of feed grade copper sulfate. The main reason is that the arsenic content seriously exceeds the standard and directly affects the normal development of the livestock and poultry breeding industry, and also affects human health. Therefore, feed grade copper sulfate, first-class electroplating grade copper sulfate, and superior grade copper sulfate have very broad market application prospects. It is urgent to research and develop the production process that can be used for large-scale production of copper sulfate for feed, first-class product of electroplating level, and copper sulfate of superior product. [0003] In our country, there are m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/10
CPCC01G3/003C01G3/10C01P2006/80
Inventor 罗秋
Owner HENGYANG YISHUN CHEM CO LTD
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