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A method for improving the heating flotation effect of scheelite

A technology of scheelite and scheelite, applied in flotation, solid separation, etc., can solve the problem of poor separation effect of scheelite and gangue minerals, poor grade and recovery rate of scheelite concentrate, large amount of water glass, etc. problems, to achieve the effect of improving poor separation effect, improving flotation efficiency and recovery rate, and reducing dosage

Active Publication Date: 2022-03-18
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, provide a method for improving the heating flotation effect of scheelite, and solve the problem of large water glass consumption and high cost in the existing scheelite heating flotation process , The separation effect of scheelite and gangue minerals is poor, resulting in poor grade and recovery rate of scheelite concentrate, especially the problem of large amount of water glass and high cost

Method used

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  • A method for improving the heating flotation effect of scheelite
  • A method for improving the heating flotation effect of scheelite
  • A method for improving the heating flotation effect of scheelite

Examples

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Effect test

Embodiment 1

[0031] Example 1: This example is the 2D layered MoS 2 Application examples of nanosheets in heated flotation of scheelite.

[0032] For a coarse scheelite concentrate in Hunan, the following steps were adopted: ①Concentrate the coarse scheelite concentrate to a concentration of 57% through a thickener, and the WO in the coarse scheelite concentrate 3 The content of scheelite is 7%, the ore particle size is -200 mesh, accounting for 85%, and the pH range of the pulp is pH9; ②Heat the concentrated scheelite coarse concentrate obtained in step ① to 53°C, and then add 2D layered MoS 2 Nanosheets, 2D layered MoS 2 The dosage of nano flakes is 150g / t, stir for 3 minutes; then continue to heat up to 67°C, add oxidized paraffin soap 733, the dosage of oxidized paraffin soap 733 is 550g / t, stir for 5 minutes; then continue to heat up to 77°C, add hydrogen Sodium oxide, the amount of sodium hydroxide is 2500g / t, stirring for 4 minutes; then continue to heat up to 87°C, add water gl...

Embodiment 2

[0035] Example 2: This example is the 2D layered MoS 2 Another application example of nanosheets in heating flotation of scheelite.

[0036] For a rough scheelite concentrate in Jiangxi, the following steps were adopted: ① Concentrate the rough scheelite concentrate to a concentration of 55% through a thickener, and the WO in the rough scheelite concentrate 3 The content of scheelite is 3%, the ore particle size is -200 mesh, accounting for 80%, and the pH range of the pulp is pH8; ②Heat the concentrated scheelite coarse concentrate obtained in step ① to 50°C, and then add 2D layered MoS 2 Nanosheets, 2D layered MoS 2 The dosage of nano flakes is 100g / t, stir for 3 minutes; then continue to heat up to 65°C, add oxidized paraffin soap 733, the dosage of oxidized paraffin soap 733 is 500g / t, stir for 5 minutes; then continue to heat up to 75°C, add hydrogen Sodium oxide, the amount of sodium hydroxide is 2000g / t, stirring for 4 minutes; then continue to heat up to 85°C, add ...

Embodiment 3

[0037] Example 3: This example is the 2D layered MoS 2 Another application example of nanosheets in heating flotation of scheelite.

[0038] For a rough scheelite concentrate in Yunnan, the following steps were adopted: ① Concentrate the rough scheelite concentrate to a concentration of 56% through a thickener, and the WO in the rough scheelite concentrate 3 The content of scheelite is 4%, the ore particle size is -200 mesh, accounting for 82%, and the pH range of the pulp is pH8; ②Heat the concentrated scheelite coarse concentrate obtained in step ① to 51°C, and then add 2D layered MoS 2 Nanosheets, 2D layered MoS 2 The dosage of nano flakes is 120g / t, stir for 3 minutes; then continue to heat up to 66°C, add oxidized paraffin soap 733, the dosage of oxidized paraffin soap 733 is 590g / t, stir for 5 minutes; then continue to heat up to 76°C, add hydrogen Sodium oxide, the amount of sodium hydroxide is 2300g / t, stirring for 4 minutes; then continue to heat up to 88°C, add w...

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Abstract

The invention discloses a method for improving the heating flotation effect of scheelite, which uses 2D layered MoS in the heating flotation of scheelite. 2 Nanosheets as de-agents. This novel 2D layered MoS 2 When nanosheets are used as flotation removal agents, due to their large specific surface area and abundant active sites, they can adsorb the remaining agents during the roughing flotation of scheelite, and remove the effect of residual agents on the heating flotation of scheelite. Greatly improve the separation effect of scheelite heating flotation; at the same time, the sulfur atoms in its molecules will undergo complex reaction with metal ions in water, eliminating the inevitable influence of metal ions in water on flotation, and improving scheelite heating The flotation effect can effectively improve the flotation efficiency and recovery rate of scheelite heated and selected.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a method for improving the heating flotation effect of scheelite. 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, and has similar physical and chemical properties with gangue in terms of hardness, relative specific gravity, solubility, etc., especially the positioning ions on the surface are calcium ions. The interaction with collectors shows similar adsorption behavior; at the same time, scheelite has low hardness and is easy to be crushed. In the scheelite flotation solution system, there are interactions between coarse-grained and fine-grained minerals and between different minerals. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/00B03D1/002B03D103/02
Inventor 黄志强何桂春邱廷省王洪岭余新阳李立清
Owner JIANGXI UNIV OF SCI & TECH