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Selective milling-flotation method for cassiterite multi-metal sulfide ore

A multi-metal and sulfide ore technology, applied in flotation, solid separation, etc., can solve the problems of high tin loss rate, low cassiterite flotation efficiency, environmental pollution, etc., and achieve the effect of avoiding excessive crushing

Inactive Publication Date: 2013-04-03
GUANGXI GAOFENG MINE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The invention provides a selective grinding-flotation method of cassiterite polymetallic sulfide ore, which solves the problem of low cassiterite flotation efficiency and tin High loss rate and serious environmental pollution

Method used

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  • Selective milling-flotation method for cassiterite multi-metal sulfide ore

Examples

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Embodiment 1

[0026] Example 1: Treatment of a cassiterite polymetallic sulfide ore in Guangxi containing 1.0% Sn and 21.2% S, the process system is: the particle size of the ore to be ground is less than 20mm, the grinding condition is a grinding concentration of 57%, and the pH of the grinding system is controlled When the pH is 7; the ore and flotation agents (dispersant, inhibitor and collector) are added to the ore mill for grinding. The type and dosage of the flotation agent added to the rod mill are: hydroxamic acid polypropylene Amide 75-85 grams per ton raw ore, water glass 190-220 grams per ton raw ore, flotation collector butylamine black medicine 70-100 grams per ton raw ore. The particle size of the ore grinding product is +0.039mm, and -0.074mm accounts for 29.5%. After flotation to remove sulfide minerals, the tin grade (Sn) in the remaining ore is 2.88%, and the S content is 2.65%. Through the particle size analysis, the -0.039 The occupancy rate of tin metal in mm particle ...

Embodiment 2

[0027]Embodiment 2: processing a certain cassiterite polymetallic sulfide ore in Guangxi containing 1.5.0% Sn and 18.0% S, the process system is: the particle size of the ore entering the grinding is less than 20mm, the grinding condition is a grinding concentration of 52%, the grinding system The pH is controlled at pH 7.5; the ore and flotation agents (dispersant, inhibitor and collector) are added to the ore mill for grinding. The type and dosage of the flotation agent added to the rod mill are: hydroxamic acid Polyacrylamide 75-85 grams per ton raw ore, water glass 190-220 grams per ton raw ore, flotation collector butylamine black medicine 70-100 grams per ton raw ore. The particle size of the grinding product is +0.035mm, and -0.070mm accounts for 30.1%. After the sulfide minerals are removed by flotation, the tin grade (Sn) in the remaining ore is 3.50%, and the S content is 2.30%. Through the particle size analysis, the -0.039 The occupancy rate of tin metal in mm part...

Embodiment 3

[0028] Example 3: Treatment of a cassiterite polymetallic sulfide ore in Guangxi containing 0.8% Sn and 23.4% S, the process system is: the particle size of the ore to be ground is less than 20mm, the grinding condition is a grinding concentration of 48%, and the pH of the grinding system is controlled When the pH is 8; the ore and flotation agents (dispersant, inhibitor and collector) are added to the grinding machine for grinding. The type and dosage of the flotation agent added to the rod mill are: hydroxamic acid polypropylene Amide 75-85 grams per ton raw ore, water glass 190-220 grams per ton raw ore, flotation collector butylamine black medicine 70-100 grams per ton raw ore. The particle size of the ore grinding product is +0.039mm, and -0.074mm accounts for 27.5%. After flotation to remove sulfide minerals, the tin grade (Sn) in the remaining ore is 2.53%, and the S content is 2.75%. Through the particle size analysis, the -0.039 The occupancy rate of tin metal in the ...

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Abstract

The invention discloses a selective milling-floatation method for cassiterite multi-metal sulfide ore. In the method, cassiterite multi-metal sulfide ore is selectively milled, so that the surface hydrophilic / hydrophobic properties of cassiterite and sulfide minerals such as iron pyrite, pyrrhotite, zinc blende, jamesonite and the like in ore are changed, the surface of cassiterite does not react with a flotation collector but reacts with hydroxamic acid polyacrylamide, and selective flocculation is performed on the surfaces of cassiterite minerals; and surfaces of minerals such as iron pyrite, pyrrhotite, zinc blende, jamesonite and the like do not adsorb hydrophilic substances, and a fresh surface which is obtained by milling ore and dissociating reacts with a flotation collector which is added into an ore mill, so that floatability is realized for the surface hydrophilic property, the problems of low cassiterite floatation efficiency, high tin loss rate and severe environmental pollution caused by excessive smashing of cassiterite with the conventional floatation method in the ore dressing process of cassiterite multi-metal sulfide ore are solved, and the recovery of cassiterite with a subsequent gravity separation technology is facilitated.

Description

technical field [0001] The invention relates to a selective grinding-flotation process of cassiterite polymetallic sulfide ore. Background technique [0002] The main types of tin deposits in my country are cassiterite-sulfide deposits, such as Gejiu and Dachang tin deposits, which are mainly distributed in Yunnan, Guangxi, Guangdong, Hunan and other provinces. The reserves of tin ore are about 3.84 million tons, ranking first in the world. Tin-containing minerals include cassiterite, yellow tin ore, phyllite, cylindrical tin ore, hydrocassiterite, stibnite, tin ore, etc., but cassiterite is the only common mineral of tin metal, other tin minerals Generally, there is no economic value. For the recovery of coarse-grained tin ore, the gravity separation method is commonly used at present. With the increase of mining years, the rich ore has gradually dried up. On the one hand, the embedded distribution of tin ore is becoming more and more complicated, which is inevitable in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03B1/00
Inventor 覃文庆黎全邓金灿全柏飞刘燕韦新彦郭业东
Owner GUANGXI GAOFENG MINE IND
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