Calcium-containing or silicate-containing gangue mineral flotation depressant and preparation method and application thereof

A technology for gangue minerals and silicates, applied in the field of comprehensive utilization of tungsten ore resources, can solve the problems of difficult flotation separation, large dosage, low concentrate grade and recovery rate, etc., and achieve high-efficiency flotation separation and short reaction time. , The effect of reducing the cost of beneficiation

Active Publication Date: 2018-03-27
CENT SOUTH UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the difficulty in flotation and separation of tungsten ore and calcium-containing and silicate gangue minerals in the prior art, traditional inhibitors such as water glass, etc., have problems such as large dosage, low concentrate grade and recovery rate, etc., the present invention The purpose is to provide a kind of metal ion inorganic polymer inhibitor which has a strong selective inhibitory flotation effect on gangue minerals such as calcite, fluorite and silicate, which can be used to realize the flotation of scheelite and calcium or silicic acid. Efficient Flotation Separation of Gangue Minerals

Method used

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  • Calcium-containing or silicate-containing gangue mineral flotation depressant and preparation method and application thereof
  • Calcium-containing or silicate-containing gangue mineral flotation depressant and preparation method and application thereof
  • Calcium-containing or silicate-containing gangue mineral flotation depressant and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Add 375g of diatomite with a particle size below 37 μm and 100mL of 40% caustic soda solution into the autoclave, control the temperature of the autoclave at 200°C and the pressure at 15MPa, and react for 1 hour. After the reaction, filter to obtain the filtrate. Then, 180 g of aluminum sulfate powder was added to the filtrate, and stirred at 100° C. for 10 min to obtain the metal ion inorganic polymer inhibitor.

[0035] Use the obtained metal ion inorganic polymer inhibitor to treat Shizhuyuan tungsten tin molybdenum bismuth polymetallic ore tungsten ore, the raw material used is black and white tungsten mixed flotation rough concentrate, the rough concentrate contains WO 3 The phase analysis shows that the tungsten-containing minerals are mainly scheelite, wolframite, and a small amount of tungsten, and the gangue minerals are mainly calcite, fluorite, garnet, mica and other calcium-containing minerals. Add the metal ion inorganic polymer inhibitor into the pulp, adj...

Embodiment 2

[0038] Add 375g of diatomite with a particle size below 37 μm and 100mL of 35% caustic soda solution into the autoclave, control the temperature of the autoclave at 100°C and the pressure at 5MPa, react for 2 hours, and filter to obtain the filtrate after the reaction. Immediately, 90 g of aluminum sulfate powder was added to the filtrate, and stirred at 50° C. for 30 min to obtain the metal ion inorganic polymer inhibitor.

[0039] The obtained metal ion inorganic polymer inhibitor is used to treat fine tungsten slime from Xingluokeng tungsten mine in Ninghua. 3The phase analysis shows that the tungsten-containing minerals are mainly scheelite, wolframite, and a small amount of tungsten, and the gangue minerals are mainly feldspar, calcite, garnet, mica, quartz and other minerals. Add the metal ion inorganic polymer inhibitor into the pulp, adjust the slurry for 5 minutes and then add it to the flotation column. After one rough and two fines, the WO-containing 3 It is 71.41%...

Embodiment 3

[0042] Add 375g of diatomite with a particle size below 37 μm and 100mL of 40% caustic soda solution into the autoclave, control the temperature of the autoclave at 150°C and the pressure at 10MPa, react for 2 hours, and filter to obtain the filtrate after the reaction. Then 45g of aluminum sulfate powder was added to the filtrate, and stirred at 80°C for 20 minutes to obtain the metal ion inorganic polymer inhibitor.

[0043] Use the obtained metal ion inorganic polymer inhibitor to treat Yaogangxian tungsten tin molybdenum bismuth polymetallic ore tungsten ore. The raw material used is black and white tungsten mixed flotation rough concentrate, the rough concentrate contains WO 3 The phase analysis shows that the tungsten-containing minerals are mainly wolframite, scheelite, and a small amount of tungsten, and the gangue minerals are mainly fluorite, calcite, mica, garnet, quartz and other minerals. Add 150g / t metal ion inorganic polymer inhibitor into the pulp, adjust the s...

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Abstract

The invention discloses a calcium-containing or silicate-containing gangue mineral flotation depressant and a preparation method and application thereof. The flotation depressant is formed by polymerizing an inorganic polymer and metal ions. The preparation method of the flotation depressant comprises the steps that diatomaceous earth and a sodium hydroxide solution react under a high-temperatureand high-pressure condition to obtain the inorganic polymer, and then polymerization reaction is carried out on the inorganic polymer and metal salt to obtain the flotation depressant. The method is simple and low in cost, the prepared flotation depressant has extremely strong selective depressing effect on the calcium-containing and silicate-containing gangue mineral so that high-efficiency flotation separation of a tungsten-containing mineral from the gangue mineral can be realized; and the use amount of a chemical agent is small, the cost is low, and the flotation index is stable so that the depressant and the method can be widely applied to the great improvement of the concentrate grade and the recovery rate in the tungsten ore flotation process.

Description

technical field [0001] The present invention relates to a flotation inhibitor, in particular to a metal ion inorganic polymer inhibitor used to inhibit the flotation of calcium-containing or silicate gangue minerals and a preparation method thereof, and the inhibitor used for The flotation separation between tungsten minerals and gangues such as carbonates and silicates belongs to the field of comprehensive utilization of tungsten ore resources. Background technique [0002] Tungsten metal has a wide range of uses in the industrial field, and is used as a strategic reserve resource by countries all over the world because of its scarcity and irreplaceability. Scheelite often closely coexists with calcium-containing gangue minerals such as calcite and fluorite. It has similar physical and chemical properties in terms of relative specific gravity, hardness, solubility, etc., especially the positioning ions on the surface are calcium ions. The similar adsorption behavior is sho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/002B03D101/06B03D103/04
CPCB03D1/002B03D2201/06B03D2203/04
Inventor 胡岳华卫召孙伟李爱民韩海生王若林王琛杨美情黄景华
Owner CENT SOUTH UNIV
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