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Measuring method for high-zinc slag of wet-process zinc smelting system and organic substances in solution

A technology for hydrometallurgical zinc smelting and determination method, which is applied in the direction of measuring device, improvement of process efficiency, preparation of test samples, etc., to achieve the effects of energy saving, good reproducibility and simple operation

Active Publication Date: 2018-04-06
HUNAN HUAQI RESOURCES ENVIRONMENT SCI & TECH DEV CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0016] The purpose of the present invention is to solve the problem of how to accurately measure the organic matter in the existing zinc smelting process, and propose a method for the determination of organic matter in the zinc slag and solution in the zinc hydrometallurgy system. The method for the determination of organic matter in slag and solution can accurately measure high zinc slag and organic matter in solution in the hydrometallurgy system, and does not require expensive instruments. It is easy to operate and has good reproducibility. played a key role

Method used

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  • Measuring method for high-zinc slag of wet-process zinc smelting system and organic substances in solution

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A method for the determination of high zinc slag and organic matter in the solution of the zinc hydrometallurgy system, which uses an organic solvent to dissolve the high zinc slag of the wet zinc smelting system and the organic matter in the solution, and then uses an extractant to dissolve the high zinc slag of the wet zinc smelting system. and extracting the solution to the organic phase, and then using a complexing agent to wash the metal ions in the organic phase, and then concentrating the washed loaded organic phase at low temperature and weighing, so as to obtain the total content of the organic matter.

[0042] Further, the use of organic solvents to dissolve the high zinc slag and organic matter in the solution of the wet zinc smelting system is to weigh the samples of wet calcination, wet leaching slag, wet flotation concentrate and flotation tailings, and take the samples Put it into the test bottle, then add an organic solvent to dissolve the organic matter ...

Embodiment 2

[0058] The principle of embodiment 2 is basically the same as that of embodiment 1. It is a method for measuring high zinc slag and organic matter in solution in a zinc hydrometallurgy system. The solution will be returned to the zinc smelting system) 50ml two parts were put into the separatory funnel, and then extracted with cyclohexane, then washed with 1% EDTA-disodium salt and water to load the organic matter, and the washed organic phase was concentrated at low temperature, After dehydration and weighing, the weights of the organic matter were 0.0028g and 0.0030g, respectively. According to the following formula (1), the organic matter content of the flotation tail liquid was calculated as 0.056g / L and 0.0058g / L respectively.

[0059] Liquid sample organic matter content (g / L) = ×1000 (1)

[0060] W1 - empty weight of the weighing bottle;

[0061] W2 - total weight of weighing bottle and organic matter;

[0062] V - sampling volume.

Embodiment 3

[0064] The principle of embodiment three is basically the same as that of embodiment one. It is a method for measuring the high zinc slag and organic matter in the solution of a wet zinc smelting system. In this embodiment, 10.0 g of the zinc leaching residue filter cake of a certain wet zinc smelting plant is weighed. Put it into a 250ml conical flask, then add 10-15ml of acetone reagent to dissolve, cover tightly with a rubber stopper, shake for 5 minutes, then use rapid quantitative filter paper for liquid-solid separation, wash the conical flask and funnel with acetone, and then use cyclohexane After extraction, the loaded organic matter was washed with 1% EDTA-disodium salt, water, etc., and the washed organic phase was concentrated at low temperature, dehydrated, and weighed, and the weight of the organic matter was 0.0048g. According to the following formula (2), the content of organic matter in the leached slag is calculated to be 0.48kg / t.

[0065] Solid sample organi...

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Abstract

The invention discloses a measuring method for high-zinc slag of a wet-process zinc smelting system and organic substances in a solution. The measuring method comprises the following steps: dissolvingthe high-zinc slag of the wet-process zinc smelting system and the organic substances in the solution with an organic solvent, and extracting the high-zinc slag of the wet-process zinc smelting system and the solution to an organic phase through an extracting agent; washing metal ions in the organic phase by a complexing agent, and performing low-temperature concentration on the cleaned loaded organic phase, and weighing, thereby obtaining total content of the organic substances. The invention provides the production site measuring method for organic substances in a wet-process zinc smeltinghigh-zinc ion solution, and solves the problems that an existing organic substance measuring method is complex, a measuring instrument is dear, a measuring range is limited and the like. The method does not need the dear instrument, is simple to operate, is good in repeatability, and achieves the key effect in organic substance control in each workshop of a wet-process zinc smelting plant.

Description

technical field [0001] The invention relates to a method for determining organic matter in a zinc hydrometallurgy system, in particular to a method for determining organic matter in high zinc slag and solution in a zinc hydrometallurgy system. The method for the determination of organic matter in electrolytic zinc production can accurately and quickly determine the content of organic matter in the silver flotation system in the leaching slag of electrozinc production, so as to control the burning of the cathode plate during zinc electrolysis caused by on-site organic matter, which can save energy and improve current efficiency. It belongs to the technical field of analytical chemistry. Background technique [0002] In the process of zinc hydrometallurgy, the middle and supernatant solution obtained after leaching can be purified to obtain qualified zinc sulfate solution (called new solution). Generally, impurity elements (Cu, Cd, Co, Ni, As, Sb , Ge, Fe, F, Cl) content is l...

Claims

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Application Information

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IPC IPC(8): G01N5/00G01N5/04G01N1/28G01N1/34G01N1/40C22B3/20C25C1/16
CPCG01N1/28G01N1/34G01N1/4055G01N5/00G01N5/04C22B3/20C25C1/16G01N2001/4061Y02P10/20
Inventor 凌丽向平
Owner HUNAN HUAQI RESOURCES ENVIRONMENT SCI & TECH DEV CO LTD
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