Beneficiation method for separating zinc sulfide ores from sulphur in wet-method zinc smelting slag

A technology of zinc hydrometallurgy and ore dressing method, applied in wet separation, chemical instruments and methods, solid separation, etc., can solve the problems of zinc resource loss, unfavorable sulfur processing and utilization, and reduce the quality of sulfur products, so as to improve the utilization rate , good sorting effect and simple process

Active Publication Date: 2012-07-04
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, on the one hand, zinc sulfide in sulfur products reduces the quality of sulfur products, which is not conducive to the further processing and utilization of sulfur; on the other hand, it causes the loss of zinc resources

Method used

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  • Beneficiation method for separating zinc sulfide ores from sulphur in wet-method zinc smelting slag
  • Beneficiation method for separating zinc sulfide ores from sulphur in wet-method zinc smelting slag
  • Beneficiation method for separating zinc sulfide ores from sulphur in wet-method zinc smelting slag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044]The raw ore sample is a zinc pressurized acid leaching slag sample from a wet zinc smelting plant. The dispersant sodium hexametaphosphate was added to the mill at a dosage of 200 g / ton, and quicklime was added to adjust the pH value to 6.5, and then the ore was ground to -0.074. The mm particle size accounts for 90%. It is a closed-circuit flotation process after one roughing, two sweepings and four selected selections. See the process flow figure 1 , add sodium sulfide and thioglycolic acid two kinds of depressants simultaneously during roughing, and wherein sodium sulfide consumption is 2000 grams / ton, and thioglycolic acid consumption is 300 grams / ton, foaming agent 40 grams / ton, flotation product is filtered, Drying, the test results are as follows:

[0045]

[0046] The result of the closed-circuit test shows that the present invention can be well applied to the flotation separation of zinc and sulfur in the ore sample, and better product indexes can be obtained...

Embodiment 2

[0048] The raw ore sample is a zinc pressurized acid leaching slag sample from a wet zinc smelting plant. The dispersant sodium hexametaphosphate was added to the mill at a dosage of 300 g / t, and quicklime was added to adjust the pH value to 6.5, and then the ore was ground to -0.074. The mm particle size accounts for 90%. It is a closed-circuit flotation process after one roughing, two sweepings and four selected selections. See the process flow figure 1 , add sodium sulfide and thioglycolic acid two kinds of inhibitors simultaneously when roughing, and wherein sodium sulfide consumption is 3000 grams / ton, thioglycolic acid consumption is 250 grams / ton, foaming agent 40 grams / ton, flotation product is filtered, Drying, the test results are as follows:

[0049]

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Abstract

The invention provides a beneficiation method for separating ores from sulphur in wet-method zinc smelting slag. The beneficiation method includes firstly, realizing fine grinding of the wet-method zinc smelting slag while adding dispersing agent and realizing separation and dispersing of the sulphur and the zinc sulfide ores; secondly, utilizing combined suppressant to suppress the zinc sulfide ores in leaching slag in a floatation process after the leaching slag is ground, realizing floatation separation of the zinc sulfide ores and the sulphur via once roughing, twice scavenging and four times of concentration under the condition of adding a small quantity of foaming agent, and obtaining high-quality sulphur products and zinc concentrate capable of returning to a wet-method zinc smelting process; and thirdly, leading ores in first concentration, second concentration and first scavenging to return to roughing in a centralized manner and leading ores in third concentration and fourth concentration to return to the first concentration in a centralized manner in a floatation technical process. The beneficiation method effectively realizes separation of the sulphur and the zinc sulfide ores in the zinc sulfide concentrate wet-method leaching slag, the quality of the sulphur products is improved, zinc elements are recycled effectively, and comprehensive utilization rate of the wet-method zinc smelting process is improved.

Description

technical field [0001] The invention relates to a process for separating zinc sulfide minerals from sulfur in zinc sulfide concentrate wet-process zinc smelting slag, and belongs to the technical field of mineral processing. Background technique [0002] my country is relatively rich in zinc resources, ranking among the top in the world. However, the proven actual zinc reserves are far less than the expected reserves. Therefore, how to make full use of the advantages of zinc resources in my country and rationally develop and utilize zinc resources has always been a concern. Industrially, zinc raw materials used for smelting can be divided into zinc oxide ore and zinc sulfide ore, and zinc oxide concentrate can be directly leached. The main methods used in zinc smelting of zinc sulfide concentrate are: ①Oxidation roasting-acid leaching-electrodeposition; ②Direct oxygen pressure leaching-electrodeposition. Oxygen pressure leaching of zinc sulfide concentrate-electrowinning t...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03B9/00
Inventor 欧乐明冯其明张国范卢毅屏黄海威
Owner CENT SOUTH UNIV
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