Calcium-containing gangue combined inhibitor for scheelite flotation as well as preparation method and application method thereof

A technology combining inhibitors and scheelite, which is applied in flotation, process efficiency improvement, solid separation, etc., can solve serious environmental pollution and other problems, achieve the effects of less dosage, improved flotation effect, and enhanced inhibition

Active Publication Date: 2021-10-08
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Contains heavy metal ions, causing serious environmental pollution

Method used

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  • Calcium-containing gangue combined inhibitor for scheelite flotation as well as preparation method and application method thereof
  • Calcium-containing gangue combined inhibitor for scheelite flotation as well as preparation method and application method thereof
  • Calcium-containing gangue combined inhibitor for scheelite flotation as well as preparation method and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A combined calcium-containing gangue depressant for scheelite flotation. The components are sodium lignosulfonate, humic acid and carboxylated chitosan, and the contents are respectively 40%, 50% and 10%.

[0024] A preparation method of the calcium-containing gangue combined inhibitor for scheelite flotation, comprising: 40% sodium lignosulfonate, 50% humic acid, 10% carboxylated chitosan %, mixed to prepare the calcium-containing gangue combined inhibitor DWC for scheelite flotation, then heated to 80°C, added water until the mass concentration of the inhibitor DWC was 20%, and stirred at a high speed of 1000r / min After 10 minutes, an aqueous solution of the inhibitor DWC was prepared, which was further diluted to a 2% solution for later use.

[0025] A method for flotation scheelite using the above combined inhibitor, comprising:

[0026] (1) Grind the scheelite through a ball mill to -74 microns and account for 70%; the adopted scheelite contains tungsten (WO 3 ) ...

Embodiment 2

[0034] A combined calcium-containing gangue depressant for scheelite flotation. The components are sodium lignosulfonate, sodium humate and carboxylated chitosan, and the contents are respectively 40%, 55% and 5%. A preparation method of the calcium-containing gangue combined inhibitor for scheelite flotation, comprising: 40% sodium lignosulfonate, 55% sodium humate, carboxylated chitosan 5%, mixed to prepare the calcium-containing gangue combined inhibitor DWC for scheelite flotation, then heated to 80°C, added water until the mass concentration of the inhibitor DWC was 30%, at a high speed of 1500r / min Stir for 15 minutes to prepare an aqueous solution of the inhibitor DWC, which is further diluted to a 2% solution for later use.

[0035] A method for flotation scheelite using the above combined inhibitor, comprising:

[0036] (1) Grind the scheelite through a ball mill to -74 microns and account for 75%; the adopted scheelite contains tungsten (WO 3 ) is about 0.54%, CaO ...

Embodiment 3

[0044] A combined calcium-containing gangue depressant for scheelite flotation. The components are sodium lignosulfonate, sodium humate, and carboxylated chitosan, and the contents are respectively 35%, 60%, and 5%.

[0045] A preparation method of the calcium-containing gangue combined inhibitor for scheelite flotation, comprising: 35% sodium lignosulfonate, 60% sodium humate, carboxylated chitosan 5%, mixed to prepare the calcium-containing gangue combined inhibitor DWC for scheelite flotation, then heated to 80°C, added water until the mass concentration of the inhibitor DWC was 25%, at a high speed of 1200r / min Stir for 10 min to prepare an aqueous solution of the inhibitor DWC, which is further diluted to a 2% solution for later use.

[0046] A method for flotation scheelite using the above combined inhibitor, comprising:

[0047] (1) Grind the scheelite through a ball mill to -74 microns and account for 75%; the adopted scheelite contains tungsten (WO 3 ) is about 0.36%,...

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Abstract

A calcium-containing gangue combined inhibitor for scheelite flotation and a preparation method and an application method thereof belong to the field of beneficiation reagent preparation. According to the calcium-containing gangue combined inhibitor for scheelite flotation, humic acid can inhibit gangue minerals to a certain degree, but is not high in selectivity, and after carboxylated chitosan is added, the inhibition performance on the calcium-containing gangue minerals is enhanced without affecting floating of scheelite. Lignosulfonate not only can disperse ore pulp, but also strengthens the inhibition effect on calcium-containing gangue. The inhibitor prepared by the method disclosed by the invention is small in dosage in actual use, is macromolecular organic matters, is easy to degrade and has no pollution to the environment, and can be used for selectively inhibiting calcium-containing gangue and improving the flotation effect.

Description

technical field [0001] The invention belongs to the field of preparation of mineral dressing reagents, and in particular relates to a calcium-containing gangue combined inhibitor for scheelite flotation and its preparation and application method. Background technique [0002] As we all know, rare metals are important strategic resources of the country, and tungsten is a typical rare metal with extremely important uses. The content of tungsten in the earth's crust is 0.001%. There are 20 kinds of tungsten-containing minerals that have been discovered. Tungsten deposits are generally formed with the activity of granitic magma. After smelting, tungsten is a silvery-white shiny metal with a very high melting point and high hardness. The main minerals of tungsten are wolframite and scheelite. [0003] In recent years, with the continuous development and utilization of tungsten resources, wolframite, which is easy to separate, is gradually exhausted. Scheelite, which is diffi...

Claims

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Application Information

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IPC IPC(8): B03D1/018B03D1/02B03D101/06B03D103/04
CPCB03D1/018B03D1/025B03D2201/06B03D2203/04Y02P10/20
Inventor 朱一民王超韩文杰李艳军
Owner NORTHEASTERN UNIV
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