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Gravity separation method with defoaming agent for non-ferrous metal ore capable of being treated with gravity method

A non-ferrous metal and defoaming technology, which is applied in the direction of wet separation, foam dispersion/prevention, chemical instruments and methods, etc., can solve the problems of low recovery rate, waste of mineral resources, low enterprise efficiency, etc., and achieve the goal of improving the recovery rate of ore dressing Effect

Inactive Publication Date: 2011-07-27
兰坪县矿产三废回收厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The recovery rate of non-ferrous metal minerals in hydraulic shaker gravity separation and chute gravity separation has always been low, resulting in waste of mineral resources and low business efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Example 1: a certain tailings, the weight ratio of the metal compound contained in it is: iron sulfide 3.4%, lead sulfide 0.2%, lead oxide 0.7%, zinc oxide 3.1%. The metal recovery rate is 53.5% when the chute gravity separation is carried out by ordinary technology. According to the method of the present invention, water glass is added as a defoamer when re-election in the chute, 800 grams of water glass is added per ton of tailings, and the metal recovery rate is 78.6%.

Embodiment 2

[0011] Example 2: A sandstone-type oxygen-sulfur mixed copper ore contains copper compounds in a weight ratio of 0.5% copper sulfide and 1.7% copper oxide. Shaking table re-election with ordinary technology, the recovery rate of copper is 43.8%. According to the inventive method, add sodium thiosulfate, aluminum sulfate and water glass to make defoamer when carrying out shaking table re-election, add 40 grams of sodium thiosulfate for every ton of ore, add 40 grams of aluminum sulfate, add 600 grams of water glass, The copper recovery rate was 67.2%.

Embodiment 3

[0012] Example 3: A certain lead-zinc mixed ore, the weight ratio of the metal compound contained in it is: 23.6% of zinc oxide, 1.5% of lead sulfide, and 3.2% of lead oxide. Shaker re-election with ordinary technology, the lead recovery rate is 60.5%. According to the method of the present invention, bleaching powder and sodium fluorosilicate are added as defoamers when re-election on a shaking table, 20 grams of bleaching powder is added per ton of ore, 600 grams of sodium fluorosilicate is added, and the recovery rate of lead is 75%.

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Abstract

The invention relates to a defoaming reselection method for reselectable non-ferrous metal ores, which belongs to the technical field of ore dressing of the non-ferrous metal ores. The method can add a defoaming agent in the process of performing water power shaking table reselection or chute reselection on the reselectable non-ferrous metal ores, wherein the total dose of the defoaming agent added to each ton of the selected ores is between 50 and 800 grams, and the rest operating conditions are the same as that of the common water power shaking table reselection or chute reselection. The method can add the defoaming agent which is not corrosive to a used device in the ore grinding and classifying processes, and the total dose of the defoaming agent added to the each ton of the processedores is between 20 and 900 grams. Because of the addition of the defoaming agent, in the process of performing the water power shaking table reselection or chute reselection on the non-ferrous metal ores, ore grains are not attached to steam bubbles, the natural specific gravity characteristics are presented sufficiently, and the ore dressing recovery efficiency can be improved.

Description

technical field [0001] The invention belongs to the technical field of beneficiation of nonferrous metal ores, and in particular relates to a gravity beneficiation method in which defoamers are added to nonferrous metal ores. Background technique [0002] Non-ferrous metallurgy, whether it is pyrometallurgy or wet method, must use concentrate. Since the grades of non-ferrous metal ores are mostly low, beneficiation must be carried out. Gravity beneficiation, also known as gravity beneficiation, is one of the important beneficiation methods. Due to the complexity and difference of ore-forming conditions of non-ferrous metal minerals, most non-ferrous metal ores must be concentrated and recovered through gravity separation. Hydraulic shaking table gravity separation and chute gravity separation are important gravity mineral processing methods, both of which use the difference in the movement state of ore particles in inclined water flow for separation. The recovery rate of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B5/04B03B5/62B01D19/04
Inventor 邹雪松李勇李美平
Owner 兰坪县矿产三废回收厂
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