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Inorganic floatation carrier for silver floatation of zinc hydrometallurgy acid leaching pulp

A hydrometallurgical zinc and inorganic technology, applied in the fields of inorganic flotation carriers and flotation reagents, can solve the problems of adverse effects of electrolysis process, excessive organic matter, etc. loss, and the effect of enhancing flotation capture

Active Publication Date: 2014-02-05
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

[0020] The acid leaching pulp of a zinc hydrometallurgy contains 300 g / t of silver. The results of sieve analysis of fine particle size and silver particle size distribution are shown in Table 1:

[0021] Table 1 Results of sieve analysis of zinc acid leaching pulp in hydrometallurgy and determination of silver particle size distribution in Example 1

[0022] -200mesh% -500mesh% Ag at -200 mesh% Ag at -500 mesh% 85.94 69.7 94.93 79.54

[0023] 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.

[0024] Table 2 Test results of silver flotation with zinc acid leaching slurry in hydrometallurgy in Example 1

[0025] Silver ore grade g / t Silver concentrate grade g / t Silver tailings grade g / t Silver Recovery % 473 3189 216 58.28

[0026] This example is...

example 2

[0029] According to the test process shown in Example 1, the 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.

[0030] Table 3 The test results of silver flotation with sphalerite carrier in acid leaching pulp in Example 1

[0031] Silver ore grade g / t Silver concentrate grade g / t Silver tailings grade g / t Silver Recovery % 481 3099 163 69.78

example 3

[0033] According to the test process shown in embodiment one, the carrier flotation test is carried out to the zinc acid leaching ore slurry sample of the wet smelting of example one, wherein the carrier adopts -150 micron galena powder, and the consumption is 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.

[0034] Table 3 The results of silver flotation tests with galena carrier in acid leaching pulp in Example 1

[0035] 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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IPC IPC(8): B03D1/002B03D101/02
Inventor 向平凌虹
Owner HUNAN HUAQI RESOURCES ENVIRONMENT SCI & TECH DEV CO LTD