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Inorganic flotation carrier for flotation of silver from zinc acid leaching pulp in hydrometallurgy

A zinc hydrometallurgy and inorganic technology, which is applied in the field of flotation reagents and inorganic flotation carriers, can solve the problems of adverse effects of the electrolysis process and excessive organic matter, so as to improve the recovery rate of zinc and silver flotation in hydrometallurgy and reduce the Loss, strengthen the effect of flotation collection

Active Publication Date: 2016-03-02
HUNAN HUAQI RESOURCES ENVIRONMENT SCI & TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the flotation effect of the carrier is good, the amount of added organic matter is too large, which may have an adverse effect on the subsequent electrolysis process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The acid leaching pulp of a zinc hydrometallurgy contains 300g / t of silver, and the screening analysis results of the fine particle size content and the silver particle size distribution measurement results are shown in Table 1:

[0020] Table 1 Example 1 In hydrometallurgy zinc acid leaching pulp sieve analysis and silver size distribution determination results

[0021] -200mesh% -500mesh% Ag at -200 mesh% Ag at -500 mesh% 85.94 69.7 94.93 79.54

[0022] According to the conventional flotation process flow, the silver flotation test without adding flotation carrier was carried out to 2500 ml of this pulp sample with a 3L flotation machine. The test results are shown in Table 2.

[0023] Table 2 Example 1 In hydrometallurgy zinc acid leaching pulp flotation silver test results

[0024] Silver ore grade g / t Silver concentrate grade g / t Silver tailings grade g / t Silver Recovery % 473 3189 216 58.28

[0025] This examp...

example 2

[0027] According to the test procedure shown in Example 1, a carrier flotation test was carried out on the hydro-smelting zinc acid leaching slurry sample of Example 1, wherein the carrier was sphalerite powder of -150 microns, and the dosage was 5 kg / ton. The test results are shown in Table 3. Obviously, compared with the results in Table 2, the grade of silver tailings was reduced from 216g / t to 163g / t, and the silver recovery rate increased by about 11 percentage points.

[0028] Sphalerite carrier flotation silver test result in acid leaching pulp in table 3 example 1

[0029] Silver ore grade g / t Silver concentrate grade g / t Silver tailings grade g / t Silver Recovery % 481 3099 163 69.78

example 3

[0031] According to the test process shown in Example 1, the carrier flotation test was carried out on the zinc acid leaching slurry sample of Example 1, wherein the carrier was -150 micron galena powder, and the dosage was 6 kg / ton. The test results are shown in Table 4. Obviously, compared with the results in Table 2, the grade of silver tailings was reduced from 216g / t to 159g / t, and the silver recovery rate increased by about 12 percentage points.

[0032] The galena carrier flotation silver test result of acid leaching pulp in table 3 example 1

[0033] Silver ore grade g / t Silver concentrate grade g / t Silver tailings grade g / t Silver Recovery % 479 3152 159 70.35

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Abstract

The invention discloses an inorganic floatation carrier for zinc hydrometallurgy micro-fine-particle silver minerals. The inorganic floatation carrier consists of one or more types of metal sulfides, and is characterized in that the metal sulfides refer to one or more of iron sulfide, zinc sulfide and lead sulfide; each metal sulfide consists of sulfide mineral particles of which the diameters are smaller than 150 microns; the adding amount of each metal sulfide is 0.1-10 kilograms per ton based on the amount of calcined sand by ton. The invention provides the inorganic floatation carrier for the zinc hydrometallurgy micro-fine-particle silver minerals. The inorganic floatation carrier can be used for adsorbing fine particles and micro-fine-particle grade silver-containing minerals in zinc leaching pulp, so that the floatation collection effect on the fine particles and the micro-fine-particle grade silver-containing minerals is enhanced, losses of the fine particles and the micro-fine-particle grade silver-containing minerals in tailings are reduced, and the floatation recovery rate in zinc hydrometallurgy is increased.

Description

technical field [0001] The invention relates to a flotation reagent, in particular to an inorganic flotation carrier for flotation of silver with zinc acid leaching slurry in hydrometallurgy, and belongs to the technical field of hydrometallurgy. Background technique [0002] As the raw materials of zinc concentrate used in zinc hydrometallurgy become poorer, finer, and hybridized, the content of fine particles in the zinc leaching slag of zinc flotation silver in hydrometallurgy is increasing day by day. The sieve analysis of zinc leaching slag from many manufacturers shows that -200 mesh generally accounts for more than 85%, and -500 mesh accounts for about 70%; the distribution rate of silver in fine particles is also increasing day by day, generally accounting for 95% in -200 mesh More than 80% of -500 mesh. The content of fine particles in the zinc leaching slag is high, and the distribution rate of silver in the fine particles is high. The specific surface area of ​​t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/002B03D101/02
Inventor 向平凌虹
Owner HUNAN HUAQI RESOURCES ENVIRONMENT SCI & TECH DEV CO LTD