Acid mist inhibitor performance test method

A technology of acid mist inhibitor and test method, applied in the direction of analysis materials, instruments, etc., can solve the problem of difficulty in evaluating the performance of acid mist inhibitor, and achieve the effects of accurate and reliable measurement results, small size and good reproducibility

Active Publication Date: 2020-12-22
CHONGQING KOOPPER CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is very difficult to evaluate the performance of acid mist inhibitors by measuring the concentration of acid mist in the laboratory

Method used

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  • Acid mist inhibitor performance test method
  • Acid mist inhibitor performance test method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Such as figure 1 The acid mist testing device shown is mainly composed of a gas source 1 , an electrowinning tank 2 , an acid mist absorption unit 3 and a vacuum pump 4 connected in sequence through a gas pipe 5 . The electrowinning cell 2 is sealed with a cover and kept warm in a water bath. The acid mist absorbing unit 3 includes 3 water containers 6 connected in series, and each water container 6 is also connected by a gas pipe 5, and the gas pipe 5 of the air intake in the water container 6 stretches under the water surface in the water container 6, to the water container 6. The end of the trachea 5 of the external exhaust of the water container 6 is above the water surface. A gas flow meter 7 is installed on the gas pipe 5 between the gas source 1 and the electrowinning tank 2, and on the gas pipe 5 between the acid mist absorption unit 3 and the vacuum pump 4. The gas flow meter 7 has a valve to adjust the gas flow . The gas comes out from the gas source 1 and ...

Embodiment 2

[0022] Example 2 Performance Test of Acid Mist Inhibitor

[0023] Utilize the acid mist test device of Example 1 to test the performance of the acid mist inhibitor.

[0024] Among them, the size of the electrowinning tank is: 140 mm * 102 mm * 130 mm, the size of the cathode plate and the anode plate is: 100 mm * 100 mm, the distance between the cathode plate and the anode plate: 40 mm, the amount of electrolytic solution is 1.0 liters, acid The dosage of fog suppressant FS-101 is 0.0250, 0.0375, 0.0500 ml. The vertical distance between the nitrogen inlet of the electrowinning tank cover and the electrowinning liquid surface is 40 mm, the vertical distance between the acid mist outlet of the electrowinning tank cover and the electrowinning liquid surface is 60 mm, and the volume of water in each gas absorption tube is 10 mm. ml. The gas absorption tube can be cooled to 10°C with ice water.

[0025] The initial concentration of copper in the electrolytic solution is 40g / L, t...

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Abstract

The invention discloses an acid fog inhibitor performance test method. Neutral gas which does not react with acid fog is used for bringing out acid fog produced in an electrodeposition process, and isfed into water; after the water absorbs the acid fog, the pH value is reduced; the amount of the acid fog produced in the electrodeposition process is calculated by measuring a variation of the pH value of the water before and after the electrodeposition; the acid fog inhibition rate is calculated by comparing the amounts of the acid fog produced before and after the adding of an acid fog inhibitor into electrodeposition liquid. An acid fog test device comprises a gas source, an electrodeposition tank, an acid fog absorption unit and a vacuum pump which are connected in sequence through gas pipes; the acid fog absorption unit comprises multiple serially connected closed water accommodating containers; the water accommodating containers are also connected through gas pipes; gas flowmetersare arranged on the gas pipe between the gas source and the electrodeposition tank and the gas pipe between the acid fog absorption unit and the vacuum pump. The used device is small in size and simple in structure, can be placed in a fuming cupboard of a laboratory, and is harmless; the quantity of required samples is very small, and steps are simple; the data reproducibility is high, and a result is accurate and reliable.

Description

technical field [0001] The invention relates to the technical field of hydrometallurgy electrowinning acid mist suppression, in particular to a method for testing the performance of an acid mist inhibitor. Background technique [0002] With the successful application of copper hydrometallurgy process (leaching-extraction-electrodeposition) in mines all over the world, the electrowinning process of metal ions has been deeply studied, and its application has been extended to cobalt, nickel, manganese, zinc and other metals field of hydrometallurgy. However, the electrowinning process produces acid mist, which pollutes the air in the workshop and seriously affects the health of workers. Adding a cover to the electrowinning tank can isolate the acid mist, but it will seriously affect the production efficiency of the electrowinning workshop. Therefore, it is a common method to add an acid mist inhibitor to the electrowinning solution to control the level of acid mist in the ele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N7/04
CPCG01N7/04
Inventor 汤启明王金红张称心季尚君
Owner CHONGQING KOOPPER CHEM IND
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