Strengthened floatation method of zinc oxide ore

A technology of zinc oxide ore and zinc oxide, which is applied in flotation, solid separation, etc., can solve problems such as difficulty in smooth production site process, deterioration of flotation environment and indicators, difficulty in defoaming flotation foam, etc., to achieve good flotation indicators, reducing the impact of slime, and ensuring smoothness

Inactive Publication Date: 2017-08-18
KUNMING UNIV OF SCI & TECH
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Problems solved by technology

However, the flotation of zinc oxide ore using aliphatic amine collectors has the following disadvantages: it is more sensitive to slime and soluble salts, when the content of slime in the ore is high, the flotation environment and indicators deteriorate, and the flotation foam is destroyed by chemicals and soluble salts. It is extremely difficult to defoam the mud and armor, and the production site process is difficult to go smoothly

Method used

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  • Strengthened floatation method of zinc oxide ore

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Embodiment 1

[0015] The ore to be selected is a refractory zinc oxide ore in Yunnan. The ore contains about 6% zinc and contains high mud. The ore is ground to -200 mesh, accounting for 90wt%, and the pulp concentration is controlled at 25wt%. Add 700g / t mass fraction as 20% hydrochloric acid solution was stirred for 5 minutes, then added 6kg / t of sodium sulfide for 3 minutes, and finally added 400g / t of composite collector, 2-amino-5-hexyloxy-sodium benzenethiolate and The mass ratio of dodecylamine is 5:1. After 5 minutes of action, roughing is carried out once, and the roughing foam is selected twice. The pulp in the roughing tank is swept twice. Level operation, the foam in the scavenging process returns to the upper level operation in sequence, the whole flotation process is as follows figure 1 As shown, the flotation zinc concentrate grade is 30%, and the recovery rate is 70%.

Embodiment 2

[0017] The ore to be selected is a lead-zinc oxide mine in Sichuan, with a zinc content of 8.5%. Zinc mainly exists in the form of smithsonite, followed by zinc sulfide (about 25%). Fine to -200 mesh accounts for 85wt%, the pulp concentration is controlled at 38wt%, add 200g / t of hydrochloric acid solution with a mass fraction of 36% and stir for 3 minutes, then add 3kg / t of sodium sulfide for 5 minutes to vulcanize, and finally add 200g of composite collector / t, the mass ratio of 2-amino-5-hexyloxy-sodium benzenethiolate and dodecylamine in the composite collector is 3:1, after 2 minutes of action, roughing is carried out once, and the foam of roughing is refined twice. The ore pulp in the roughing tank is swept twice. During the beneficiation process, the ore returns to the upper level of operation in sequence, and the foam during the sweeping process returns to the upper level of operation in sequence. The entire flotation process is as follows: figure 1 As shown, the flot...

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Abstract

The invention relates to a strengthened floatation method of zinc oxide ore. The strengthened floatation method of zinc oxide ore comprises the following steps: performing fine grinding on zinc oxide ore, sequentially adding an acid solution, sodium sulfide and a compound collector for reaction, performing roughing flotation once, performing roughing flotation on roughing flotation froth for twice, and performing scavenging on ore pulp in a roughing cell for twice. According to the strengthened floatation method of zinc oxide ore, the problems in the prior art that the conventional zinc oxide ore sulfuration-amine flotation recovery rate is low and froth is difficult to control are solved, and the flotation recovery rate can reach 60-85%.

Description

technical field [0001] The invention relates to an enhanced flotation method for zinc oxide ore, which belongs to the field of mineral processing engineering flotation. Background technique [0002] my country is rich in zinc resources, and its zinc reserves rank second in the world, among which zinc oxide ore accounts for a large proportion. The main industrial minerals of zinc oxide ore are smithsonite, hemimorphite, willemite and so on. The treatment methods of zinc oxide ore mainly include flotation and wet leaching. Among them, the flotation method is currently the mainstream method for treating zinc oxide ore due to its cost advantage. The flotation methods mainly include sulfide-amine method, sulfide-xanthate method, Fatty acid collector direct flotation, flocculation flotation, etc. At present, the vulcanization-amine method is widely used in industry, and the amine collectors used are usually aliphatic primary amines with 12 carbon atoms or more, such as dodecylam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/02B03D1/018B03D101/02B03D103/02
CPCB03D1/02B03D1/018B03D2201/02B03D2203/02
Inventor 刘建罗德强王瑜文书明刘殿文
Owner KUNMING UNIV OF SCI & TECH
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