A production process for flotation of silver with hydrometallurgy zinc acid leaching pulp

A technology for hydrometallurgical zinc smelting and production process, which is applied in flotation, solid separation and other directions to achieve the effects of saving equipment and infrastructure investment, reducing organic content and reducing costs

Active Publication Date: 2016-08-17
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

[0016] The technical problem to be solved by the present invention is firstly, in order to overcome a series of problems as mentioned above caused by the need for multi-stage pressure filtration and slag washing in the existing wet zinc smelting flotation silver process, to provide a kind of method that cancels the pressure filtration and slag washing. A new technological process for direct flotation of silver from zinc acid leaching pulp in hydrometallurgy; secondly, in order to adapt to the basic characteristics of high zinc ion concentration, high temperature and high acidity in zinc acid leaching pulp in hydrometallurgy, it is necessary to modify the existing zinc flotation process in hydrometallurgy Silver collectors were improved and high-efficiency silver flotation collectors were used; again, in order to adapt to the high silver oxide mineral phase content and fine particle content in the zinc leaching slag raw materials caused by the severe hybridization of zinc hydrometallurgy raw materials High, high distribution rate of silver in fine particles, it is necessary to provide an activator for the flotation of highly efficient silver oxide minerals and a flotation carrier for fine particles of silver-containing minerals

Method used

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  • A production process for flotation of silver with hydrometallurgy zinc acid leaching pulp
  • A production process for flotation of silver with hydrometallurgy zinc acid leaching pulp
  • A production process for flotation of silver with hydrometallurgy zinc acid leaching pulp

Examples

Experimental program
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Effect test

Embodiment 1

[0057] A zinc-acid leaching ore pulp in a hydro-smelting process that has not been filtered and washed has a pulp concentration of 30%, a zinc ion concentration of 185g / l, a pulp pH of 2.6, a pulp temperature of 70°C, and a silver content of 466 g / ton. Get 2500 milliliters of this ore pulp respectively, move in 3 liters of single tank flotation machines, according to image 3 As shown in the technological process, the flotation carrier with an amount of 5 kg / ton of calcined sand is added to the roughing slurry tank, the activator of 40 grams / ton of calcined sand is added to the stirring tank of Sweep 2, and the collector of 120 grams / ton of calcined sand is added to the rough selection. Ton calcine, add collector 60 g / ton calcine in sweep 1 and sweep 2 respectively, add collector 30 g / t calcine in sweep 3, the results of closed-circuit flotation test are shown in Table 1.

[0058]

example 2

[0060] A zinc-acid leaching ore pulp in a hydro-smelting process that has not been filtered and washed has a pulp concentration of 31%, a zinc ion concentration of 193g / l, a pulp pH of 2.8, a pulp temperature of 69°C, and a silver content of 397 g / ton. Get 2500 milliliters of this ore pulp respectively, move in 3 liters of single tank flotation machines, according to image 3 As shown in the technological process, the flotation carrier with an amount of 4 kg / ton of calcined sand is added to the roughing slurry tank, the activator of 35 grams / ton of calcined sand is added to the stirring tank of Sweep 2, and the collector of 100 grams / ton of calcined sand is added to the rough selection. Ton calcine, add collector 50 g / ton calcine in sweep 1 and sweep 2 respectively, add collector 25 g / t calcine in sweep 3, the results of closed-circuit flotation test are shown in Table 2.

[0061]

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Abstract

The invention discloses a production process method for flotation of silver in zinc acid leaching pulp by wet method, adopting the production process method of direct flotation of silver in zinc acid leaching pulp in wet process, first making zinc acid leaching pulp by belt beneficiation, and then directly Flotation is carried out on zinc acid leaching pulp, and silver concentrate and tailings are produced through flotation. The process of making the zinc acid leaching slurry from the belt dressing first, and then directly carrying out flotation on the zinc acid leaching slurry is to adopt the known wet zinc smelting process, and the calcined sand obtained by boiling and roasting the zinc concentrate powder is subjected to acidic leaching. Make acid leaching pulp; then use the known flotation technology to feed the acid leaching pulp into the stirring tank for slurry adjustment, add slurry flotation agent during the slurry adjustment process, and then feed the ore pulp into flotation after the slurry adjustment is completed Flotation is carried out in the tank, and flotation reagents are added during the flotation process. After flotation, silver concentrate and tailings slurry are produced. The tailings slurry is then press-filtered and washed to obtain electrolyte according to the known wet zinc smelting process. .

Description

technical field [0001] The invention relates to a metal smelting method, in particular to a preparation method for flotation silver with hydrometallurgy zinc acid leaching slurry, and belongs to the technical field of hydrometallurgy. Background technique [0002] The production process adopted by the existing zinc flotation silver production process in hydrometallurgy includes one to multiple stages of filter press and slag pretreatment operations. Since this process requires one to multiple stages of filter press and slag washing, it not only increases production costs, but most importantly A large amount of filtrate will be produced. And this kind of filtrate can not be discharged externally, resulting in the unbalanced amount of water. After being returned and recycled for many times, the concentration of zinc ions in the pulp will accumulate and increase, which will cause frequent fluctuations in the production index of the silver flotation system; and organic matter su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/00B03D1/016B03D101/02
Inventor 向平喻正军凌丽凌虹
Owner HUNAN HUAQI RESOURCES ENVIRONMENT SCI & TECH DEV CO LTD
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