A kind of method for continuous purification of zinc sulfate solution and purification tank thereof

The technology of zinc sulfate solution and purification tank is applied in the direction of improving process efficiency, which can solve the problems of low activity of zinc powder, small particle size difference of copper-cadmium-cobalt slag, and low effective zinc of zinc powder, and achieves low consumption and high purity. High and complete removal of copper, cadmium and cobalt

Active Publication Date: 2018-02-13
LAIBIN CHINA TIN SMELTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are three reasons why the consumption of industrial zinc powder greatly exceeds the theoretical requirement. One is that the effective zinc of industrial electric furnace zinc powder is low, usually only 85%, resulting in low activity of zinc powder. The particle size difference of copper, cadmium and cobalt slag is very small, and the solid matter of copper, cadmium and cobalt slag generated by the reaction cannot be separated in time. The solid matter of copper, cadmium and cobalt slag forms a partial package on the zinc powder, which further reduces the reactivity of the zinc powder. The third is purification After the reaction, due to the defects of the purification tank itself, the remaining zinc powder that did not participate in the reaction could not be separated from the copper-cadmium-cobalt slag, and the remaining zinc powder that did not participate in the reaction also entered the copper-cadmium slag, which eventually led to the consumption of zinc powder in industrial electric furnaces A large amount, usually up to 3 ~ 10kg / m 3 the solution

Method used

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  • A kind of method for continuous purification of zinc sulfate solution and purification tank thereof
  • A kind of method for continuous purification of zinc sulfate solution and purification tank thereof
  • A kind of method for continuous purification of zinc sulfate solution and purification tank thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Such as figure 1 As shown, a purification tank for continuous purification of zinc sulfate solution, including a liquid inlet pipe 1, a purification tank wall 2, a purification tank bottom 3, a purification tank cover plate 4, a mixer 5, an exhaust pipe 6 and a liquid outlet pipe 8 , the septic tank wall 2, the septic tank bottom 3 and the septic tank cover 4 form the septic tank tank body, the tank body is a reinforced concrete structure with a thickness of 300mm, and the lining thickness is 50mm with anti-corrosion ceramic tiles, and the internal size of the tank body is Φ3 .6m×H4.0m, the total volume is 40.7m 3 , the effective volume is 30m 3 .

[0036] The agitator 5 includes a motor, a support, a stirring shaft and a stirring paddle, the motor and the support are centered on the cover plate 4 of the purification tank, the stirring shaft and the stirring paddle are all located in the center of the purification tank body, and the mixer 5 The power of the motor is ...

Embodiment 2

[0045] Such as figure 1 As shown, a purification tank for continuous purification of zinc sulfate solution, including a liquid inlet pipe 1, a purification tank wall 2, a purification tank bottom 3, a purification tank cover plate 4, a mixer 5, an exhaust pipe 6 and a liquid outlet pipe 8 , the septic tank wall 2, the septic tank bottom 3 and the septic tank cover 4 form a septic tank tank body, the tank body is a reinforced concrete structure with a thickness of 300 mm, and the lining thickness is 50 mm with anti-corrosion ceramic tiles, and the internal size of the tank body is Φ4 .6m×H5.0m, the total volume is 83.0m 3 , the effective volume is 72m 3 .

[0046] The agitator 5 includes a motor, a support, a stirring shaft and a stirring paddle, and the agitator 5 and the support are centered on the septic tank cover plate 4, and the agitating shaft and the agitating paddle are all located in the center of the purification tank body, and the agitator 5 The power of the moto...

Embodiment 3

[0056] Such as figure 1 As shown, a purification tank for continuous purification of zinc sulfate solution, including a liquid inlet pipe 1, a purification tank wall 2, a purification tank bottom 3, a purification tank cover plate 4, a mixer 5, an exhaust pipe 6 and a liquid outlet pipe 8 , the septic tank wall 2, the septic tank bottom 3 and the septic tank cover 4 form the septic tank tank body, the tank body is a reinforced concrete structure with a thickness of 300mm, and the lining thickness is 50mm with anti-corrosion ceramic tiles, and the internal size of the tank body is Φ3 .6m×H4.0m, the total volume is 40.7m 3 , the effective volume is 30m 3 .

[0057] The agitator 5 includes a motor, a support, a stirring shaft and a stirring paddle, and the agitator 5 and the support are centered on the septic tank cover plate 4, and the agitating shaft and the agitating paddle are all located in the center of the purification tank body, and the agitator 5 The power of the moto...

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Abstract

The invention discloses a continuous purification method for a zinc sulfate solution and a purification trough of the method, and belongs to the technical field of zinc hydrometallurgy. A liquid inlet pipe, a purification trough wall, a purification trough bottom, a purification trough cover plate, a stirring machine, an exhaust pipe and a liquid outlet pipe are included. A filter plate is further included. The filter plate is arranged at the communicated position of the purification trough wall and the liquid outlet pipe. The filter plate is provided with filter holes. A zinc piece is arranged in a purification trough body. The continuous purification method for the zinc sulfate solution is achieved through the purification trough, the to-be-processed zinc sulfate solution is continuously added into the purification trough, the replacement reaction is carried out between the zinc sulfate solution and the zinc piece in the trough to remove copper, cadmium and cobalt impurities, and the processed zinc sulfate solution and the impurities are continuously obtained. The copper, cadmium and cobalt impurity ions in the zinc sulfate solution can be continuously and effectively replaced, the number of zinc pieces consumed for replacing the copper, cadmium and cobalt impurities can be greatly reduced, and the replacement and impurity removing cost is reduced; and high-purity copper, cadmium and cobalt residues can be obtained, and the environment of a production field can be further improved.

Description

technical field [0001] The invention relates to a method for continuous purification of zinc sulfate solution and a purification tank thereof, belonging to the technical field of zinc hydrometallurgy. Background technique [0002] In the production process of metal zinc ingot products, more than 75% of zinc ingot products are produced by hydrometallurgy process. There are five main technological processes in the main process of the traditional hydrometallurgy zinc production process, namely, zinc concentrate boiling roasting and flue gas acid production, zinc oxide leaching, zinc sulfate solution purification, zinc sulfate purification solution electrolysis and zinc flake casting, leaching slag Volatile treatment. In the process of zinc concentrate boiling roasting and flue gas acid production, the zinc sulfide in the concentrate is oxidized to zinc oxide and sulfur dioxide, sulfur dioxide enters the flue gas and after flue gas purification, sulfur dioxide conversion, and s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/22C22B3/02C22B19/00
CPCY02P10/20
Inventor 陶政修张小宁黄珣刘瑞年潘久华
Owner LAIBIN CHINA TIN SMELTING
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