Beneficiation method for cassiterite-polymetallic sulfide ores

A beneficiation method and technology for sulfide ore, applied in flotation, solid separation and other directions, can solve the problems of fine particle size, excessive crushing of cassiterite, and complicated characteristics of tin ore inlay, achieving good economic benefits and simplifying the process.

Inactive Publication Date: 2016-06-01
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the appearance of arsine and phosphonic cassiterite flotation agents (typical examples are toluene arsenic acid and styrene phosphonic acid), the flotation efficiency has been significantly improved. The recovery of coarse-grained tin ore is currently commonly used. It is a gravity separation method. With the increase of mining years, the rich ore has been gradually exhausted. On the one hand, the embedded distribution characteristics of tin ore are becoming more and more complicated. In the recovery of cassiterite, it is inevitable to recover other valuable components (such as sulfide On the other hand, due to the brittleness and fragility of cassiterite, it will inevitably encounter a contradiction that cannot be overcome by g

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The cassiterite polymetallic sulfide ore beneficiation method, its concrete steps are as follows:

[0020] (1) Put 1000g of cassiterite polymetallic sulfide ore (containing Sn0.5wt%, S21.2wt%) into the ore grinder, and grind to -200 mesh to reach 85% of the ore material; the grinding concentration is 65%, The pH of the grinding system is controlled at pH 7; the grinding machine is a wet ball mill;

[0021] (2) Flotate the ore material in step (1) once to obtain sulfide ore and the remaining pulp. Foaming agent pine alcohol oil 20 grams / ton cassiterite polymetallic sulfide ore;

[0022] (3) The remaining ore pulp is subjected to a roughing, a sweeping, and a second beneficiation flotation to obtain tin concentrate and tailings; 190 g / t cassiterite polymetallic sulfide ore water glass and 50 g / t cassiterite polymetallic sulfide ore straw cellulose as inhibitors, benzyl arsenic acid and N-nitroso-B at a mass ratio of 1:1 -Phenyl hydroxylammonium is used as a collector, ...

Embodiment 2

[0025] The cassiterite polymetallic sulfide ore beneficiation method, its concrete steps are as follows:

[0026] (1) Put 1000g of cassiterite polymetallic sulfide ore (containing Sn0.7wt%, S11.2wt%) into the ore grinder, and grind to -200 mesh to reach 85% of the ore material; the grinding concentration is 65%, The pH of the grinding system is controlled at pH 8; the grinding machine is a wet ball mill;

[0027] (2) Flotate the ore material in step (1) once to obtain sulfide ore and the remaining pulp. Foaming agent pine alcohol oil 20 grams / ton cassiterite polymetallic sulfide ore;

[0028] (3) The remaining ore pulp is subjected to a roughing, a sweeping, and a second beneficiation flotation to obtain tin concentrate and tailings; 220 g / t cassiterite polymetallic sulfide ore water glass and 70 g / t cassiterite polymetallic sulfide ore straw cellulose as inhibitors, benzyl arsenic acid and N-nitroso-B at a mass ratio of 1:1 -Phenyl hydroxylammonium is used as a collector, ...

Embodiment 3

[0031] The cassiterite polymetallic sulfide ore beneficiation method, its concrete steps are as follows:

[0032] (1) Put 1000g of cassiterite polymetallic sulfide ore (containing Sn0.3wt%, S15.42wt%) into the ore grinder, and grind to -200 mesh to reach 85% of the ore material; the grinding concentration is 65%, The pH of the grinding system is controlled at pH 7.5; the grinding machine is a wet ball mill;

[0033] (2) Flotate the ore material in step (1) once to obtain sulfide ore and the remaining pulp. Foaming agent pine alcohol oil 20 grams / ton cassiterite polymetallic sulfide ore;

[0034] (3) The remaining ore pulp is subjected to a roughing, a sweeping, and a second beneficiation flotation to obtain tin concentrate and tailings; 200 g / t cassiterite polymetallic sulfide ore water glass and 60 g / t cassiterite polymetallic sulfide ore straw cellulose as inhibitors, benzyl arsenic acid and N-nitroso-B at a mass ratio of 1:1 -Phenyl hydroxylammonium is used as a collecto...

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Abstract

The invention relates to a beneficiation method for cassiterite-polymetallic sulfide ores, and belongs to the technical field of beneficiation. The beneficiation method comprises the following steps: putting the cassiterite-polymetallic sulfide ores into an ore mill, and milling the cores until ore materials with grain size being (-)200 meshes account for 85%; carrying out primary flotation on the ore materials to obtain sulfide ores and residual ore pulp, wherein use of a floating reagent added in a floating process is that one ton of cassiterite-polymetallic sulfide ores contain 500g of butyl-xanthate, and use of a foaming agent is that one ton of cassiterite-polymetallic sulfide ores contain 20g of terpenic oil; and carrying out primary rough concentration, primary scavenging and secondary concentration and flotation on the residual ore pulp to obtain tin concentrates and tailings. According to the method, useful minerals are effectively recycled through a selective ore milling-floatation method, so that a tin beneficiation process is greatly simplified, and therefore, the beneficiation method has good economic benefits.

Description

technical field [0001] The invention relates to a beneficiation method of cassiterite polymetallic sulfide ore, which belongs to the technical field of beneficiation. Background technique [0002] my country is rich in tin ore resources, and the main deposit types are cassiterite-sulfide deposits, such as Gejiu and Dachang tin deposits, which are widely distributed, mainly in Yunnan, Guangxi, Guangdong, Hunan and other provinces. There are many associated components, and the comprehensive utilization value is great. Cassiterite (SnO 2 ) is the main recovered tin-bearing mineral. More than 3 / 4 of my country's tin metal comes from cassiterite, and the reserves of tin ore are about 3.84 million tons, ranking first in the world. Tin-containing minerals include cassiterite, pyrophyllite, kesterite, stibnite, cassiterite, etc., but cassiterite is the only available mineral for tin metal, and other tin minerals generally have no economic value . With the decreasing grade of ca...

Claims

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Application Information

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IPC IPC(8): B03D1/02B03B1/00
CPCB03D1/02B03B1/00
Inventor 崔传发文书明郭怡静先永骏王伊杰
Owner KUNMING UNIV OF SCI & TECH
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