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Floatation and purification method for quartz stone pulverized through heating power

A purification method, quartz technology, applied in flotation, solid separation, grain processing, etc., to reduce hardness, improve grinding efficiency, and reduce secondary pollution

Inactive Publication Date: 2015-05-20
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems existing in the prior art, the present invention provides a flotation purification method for thermally crushed quartz ore, the purpose of which is to perform flotation purification on quartz ore under the condition of thermally assisted crushing, so as to obtain low-cost high-quality Quartz Powder Products

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  • Floatation and purification method for quartz stone pulverized through heating power
  • Floatation and purification method for quartz stone pulverized through heating power
  • Floatation and purification method for quartz stone pulverized through heating power

Examples

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Embodiment 1

[0030] The mass content of quartz in the raw ore of a quartz mine is 98.72%, Al 2 o3 The mass content of the ore is 1.08%. The main impurity minerals in the ore are aluminosilicates such as potassium feldspar, according to figure 1 The flotation process and conditions for flotation.

[0031] (1) Put the bulk quartz ore with a diameter of 50~100mm into a muffle furnace, calcinate at 600°C for 120 minutes, and then use clean water with a temperature lower than 80°C to spray and quench the calcined quartz ore to obtain heat crushed quartz ore;

[0032] (2) Continue to crush and grind the thermally crushed quartz ore to a particle size of <150 μm, and add water to make a slurry with a mass concentration of 40%;

[0033] (3) Put the slurry into the flotation equipment for cationic collector flotation, and add H 2 SO 4 Adjust the pH value of the slurry to 2.0. After stirring for 2 minutes, add a mixing regulator at a rate of 10 mg per liter of slurry. The mixing regulator is a m...

Embodiment 2

[0036] The mass content of quartz in the raw ore of a quartz mine is 97.73%, Al 2 o 3 The mass content of the ore is 1.47%. The main impurity minerals in the ore are aluminosilicate minerals such as potassium feldspar and albite, that is, trace iron-containing minerals. figure 1 The flotation process and conditions for flotation.

[0037] (1) Put the bulk quartz ore with a diameter of 50~100mm into the tunnel kiln, calcinate at 800°C for 100 minutes, and then use clean water with a temperature lower than 80°C to quench the calcined quartz ore in a water bath to obtain thermally pulverized quartz ore;

[0038] (2) Continue to crush and grind the thermally crushed quartz ore to a particle size of <150 μm, and add water to make a slurry with a mass concentration of 50%;

[0039] (3) Put the slurry into the flotation equipment for cationic collector flotation, and add H 2 SO 4 Adjust the pH value of the slurry to 4.0. After stirring for 3 minutes, add a mixing regulator at 20...

Embodiment 3

[0042] The mass content of quartz in the raw ore of a quartz mine is 96.74%, Al 2 o 3 The mass content of the ore is 1.73%. The main impurity minerals in the ore are aluminosilicate minerals such as potassium feldspar and albite, that is, trace iron-containing minerals. figure 2 The flotation process and conditions for flotation.

[0043] (1) Put the block quartz ore with a diameter of 50~120mm into the shaft kiln, calcinate at 1000°C for 30 minutes, and then use clean water with a temperature lower than 80°C to quench the calcined quartz ore in a water bath to obtain thermally pulverized quartz ore;

[0044] (2) Continue to crush and grind the thermally crushed quartz ore to a particle size of <150 μm, and add water to make a slurry with a mass concentration of 30%;

[0045] (3) Put the slurry into the flotation equipment for flotation with anion and cation collectors, and add H 2 SO 4 Adjust the pH value of the slurry to 2. After stirring for 2 minutes, add the regulat...

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Abstract

The invention belongs to the technical field of mineral processing and particularly relates to a floatation and purification method for a quartz stone pulverized through heating power. According to the method, the quartz stone pulverized through the heating power is made into slurry with the mass concentration of 30-50%, the slurry is placed into floatation equipment, and positive ion collecting agent floatation or negative ion and positive ion mixed collecting agent floatation is carried out to separate tailings containing silicate in a floatation mode, so that concentrate with the SiO2 grade at least being 99.50% is obtained. A positive ion collecting agent or a negative ion and positive ion mixed collecting agent is adopted as an agent for floatation separation, mineral ions with potential and wettability changed can be collected completely, and the rate of removing silicate impurity minerals from the quartz stone can be over 95% by adopting the method.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a flotation purification method of thermally pulverized quartz ore. Background technique [0002] Quartz is a high-quality non-metallic mineral resource. Quartz products, especially high-purity quartz, have been widely used in high-tech industries such as aerospace, optical fiber communications, high-frequency technology, electronic technology, and photovoltaics in recent years. The texture of quartz is hard, with a Mohs hardness of 7, and quartz ore is a refractory ore. In the mechanical grinding process of quartz ore, not only the crushing production efficiency is low, but also a large amount of grinding media with greater hardness needs to be consumed; more importantly, when quartz ore is directly crushed, it will be mixed with more and Impurities related to grinding materials will bring secondary pollution and affect the purity of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/014B02C19/18
Inventor 于福家陈晓龙黄杰徐昌王泽红张振伟
Owner NORTHEASTERN UNIV
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