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Mineral separation method for scheelite containing rich pyrrhotite

A technology of pyrrhotite and beneficiation method, which is applied in chemical instruments and methods, wet separation, solid separation and other directions, can solve the problems of inability to guarantee the quality and recovery rate of tungsten concentrate, and achieves reduction of flotation beneficiation volume, Save recycling costs and improve the effect of selected grades

Inactive Publication Date: 2012-05-09
GUANGZHOU RES INST OF NON FERROUS METALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that for tungsten ore rich in pyrrhotite, flotation desulfurization cannot guarantee the quality and recovery rate of tungsten concentrate

Method used

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  • Mineral separation method for scheelite containing rich pyrrhotite
  • Mineral separation method for scheelite containing rich pyrrhotite
  • Mineral separation method for scheelite containing rich pyrrhotite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] WO of a tungsten mine in Jiangxi 3 0.75% scheelite, magnetically separated under the magnetic induction intensity of 5000Gs; according to the amount of chemicals listed in Table 1, carry out pyrrhotite flotation and concentration on the magnetic separation concentrate, and obtain pyrrhotite concentrate with a sulfur content of more than 35.26% and floating sulfur tailings; carry out scheelite roughing at room temperature to the magnetic separation tailings according to the amount of chemicals listed in Table 2. Tailings: Concentrate coarse scheelite concentrate to 65% mass concentration, heat to 90°C, stir for 60 minutes, add reagents according to the amount shown in Table 2, and perform heating flotation to obtain scheelite concentrate. Scheelite Concentrate Grade WO 3 65.37%, recovery rate 89.49%, the results are shown in Table 3.

[0021] The result of table 3 embodiment 1

[0022]

Embodiment 2

[0024] WO of a tungsten mine in Jiangxi 3 0.72% scheelite, magnetically separated under the magnetic induction intensity of 5000Gs; perform pyrrhotite flotation and concentration on the magnetically separated concentrate according to the amount of reagents listed in Table 1, and obtain pyrrhotite concentrate with a sulfur content of more than 35.26% and floating sulfur tailings; carry out scheelite roughing at room temperature to the magnetic separation tailings according to the amount of chemicals listed in Table 2. Tailings: Concentrate coarse scheelite concentrate to a mass concentration of 65%, stir at room temperature for 60 minutes, add reagents according to the amount shown in Table 2 for flotation to obtain scheelite concentrate. Scheelite Concentrate Grade WO 3 51.46%, recovery rate 87.45%, the results are shown in Table 4.

[0025] The result of table 4 embodiment 2

[0026]

Embodiment 3

[0028] WO of a tungsten mine in Yunnan 3 0.55% scheelite, magnetically separated under the magnetic induction intensity of 6000Gs; according to the amount of chemicals listed in Table 1, carry out pyrrhotite flotation and concentration on the magnetic separation concentrate to obtain pyrrhotite concentrate with a sulfur content of more than 36.79% and floating sulfur tailings; carry out scheelite roughing at room temperature to the magnetic separation tailings according to the amount of chemicals listed in Table 2. Tailings: Concentrate coarse scheelite concentrate to 60% mass concentration, heat to 90°C, stir for 90 minutes, add reagents according to the amount shown in Table 2, and perform heating flotation to obtain scheelite concentrate. Scheelite Concentrate Grade WO 3 66.28%, recovery rate 87.29%, the results are shown in Table 5.

[0029] The result of table 5 embodiment 3

[0030]

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Abstract

The invention discloses a mineral separation method for scheelite containing rich pyrrhotite, which comprises the following steps of: magnetically separating to obtain pyrrhotite rough concentrates and magnetically separated tailings; roughly separating, secondarily scavenging and secondarily blankly finely separating the pyrrhotite rough concentrates to obtain pyrrhotite concentrates and floating sulfur tailings; roughly separating, secondarily scavenging and secondarily finely separating the magnetically separated tailings to obtain white tungsten rough concentrates and floating tungsten tailings; and concentrating the white tungsten rough concentrates, carrying out floatation at normal temperature or the temperature of 80-100 degrees centigrade to obtain white tungsten concentrates and cleaner tailings. The method disclosed by the invention eliminates the influence caused by the pyrrhotite which is difficultly removed in the traditional flotation method, not only guarantees the quality of the tungsten concentrates but comprehensively recovers the pyrrhotite, and is suitable for mineral separation of the scheelite containing rich pyrrhotite.

Description

[0001] technical field [0002] The invention relates to a mineral processing method, in particular to a mineral processing method of pyrrhotite-containing scheelite. Background technique [0003] Scheelite resources are often associated with some sulfide ores such as copper sulfide ore, molybdenum sulfide ore, and iron sulfide ore. The main method of recovering scheelite is flotation, and the floatability of sulfide minerals is better than that of scheelite. In order to ensure the quality of scheelite concentrate products, it is necessary to float the associated sulfide ores before flotation of scheelite. Sulfide ore flotation not only comprehensively recovers valuable components in resources, improves resource utilization, brings economic benefits to enterprises, but also provides convenience for subsequent scheelite flotation. In sulfide ore flotation, the floatability of iron sulfide minerals is poor. Iron sulfide minerals include pyrite and pyrrhotite, with pyrite gen...

Claims

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Application Information

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IPC IPC(8): B03B7/00
Inventor 徐晓萍何晓娟高玉德王国生韩兆元尧应强
Owner GUANGZHOU RES INST OF NON FERROUS METALS
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