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Application of selective inhibitor edtmps in flotation desilication of magnesite

A magnesite, selective technology, applied in flotation, solid separation, etc., can solve the problem of low recovery rate of magnesite, achieve good scale inhibition effect, easy operation, good chemical stability and temperature resistance Effect

Active Publication Date: 2021-05-18
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the reverse flotation separation of magnesite from quartz when DDA is used as a collector will result in a large amount of magnesite floating with the silica-bearing mineral, resulting in a lower recovery of magnesite in the concentrate

Method used

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  • Application of selective inhibitor edtmps in flotation desilication of magnesite
  • Application of selective inhibitor edtmps in flotation desilication of magnesite
  • Application of selective inhibitor edtmps in flotation desilication of magnesite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The application of a selective selective inhibitor EDTMPS in the flotation desilication of magnesite, the process flow diagram is shown in figure 1 , including the following steps:

[0038] Step 1: Grinding

[0039] The high-silicon and low-grade magnesite raw ore is crushed and ball milled to obtain magnesite powder; among them, in the magnesite powder, the mass of magnesite powder with a particle size of less than 74 μm accounts for 70% of the total mass of magnesite powder ;

[0040] Step 2: Blending

[0041] Place the magnesite powder with a particle size of less than 74 μm and accounting for 70% of the total magnesite powder mass in a hanging tank flotation machine, add deionized water and a selective inhibitor EDTTMPS solution, wherein, according to the solid-liquid ratio , Selective inhibitor EDTTMPS: magnesite pulp=80mg: 1L, adjust the hanging tank type flotation machine, the rotating speed is 1800rpm and stir for 2min, make the material mix evenly, carry out...

Embodiment 2

[0047] A kind of application of selective inhibitor EDTMPS in magnesite flotation desilication, comprises the following steps:

[0048] Step 1: Grinding

[0049] The high-silicon and low-grade magnesite raw ore is crushed and ball milled to obtain magnesite powder; among them, in the magnesite powder, the mass of magnesite powder with a particle size of less than 74 μm accounts for 80% of the total mass of magnesite powder ;

[0050] Step 2: Blending

[0051] Place the magnesite powder with a particle size of less than 74 μm and accounting for 80% of the total magnesite powder mass in a hanging tank type flotation machine, add deionized water and a selective inhibitor EDTTMPS solution, wherein, according to the solid-liquid ratio , selective inhibitor EDTTMPS: magnesite pulp=90mg: 1L, and mix uniformly, carry out pulping, obtain magnesite pulp; Wherein, the mass concentration of magnesite in the magnesite pulp is 25%; Selective inhibition The mass concentration of agent EDT...

Embodiment 3

[0057] A kind of application of selective inhibitor EDTMPS in magnesite flotation desilication, comprises the following steps:

[0058] Step 1: Grinding

[0059] The high-silicon and low-grade magnesite raw materials are crushed and ball milled to obtain magnesite powder; among them, in the magnesite powder, the mass of magnesite powder with a particle size of less than 74 μm accounts for 80% of the total mass of magnesite powder ;

[0060] Step 2: Blending

[0061] Place the magnesite powder with a particle size of less than 74 μm and accounting for 80% of the total magnesite powder mass in a hanging tank type flotation machine, add deionized water and a selective inhibitor EDTTMPS solution, wherein, according to the solid-liquid ratio , selective inhibitor EDTTMPS: magnesite pulp=100mg: 1L, and mix uniformly, carry out pulping, obtain magnesite pulp; Wherein, the mass concentration of magnesite in the magnesite pulp is 30%; Selective inhibition The mass concentration of a...

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Abstract

The application of a selective inhibitor EDTMPS in magnesite flotation desiliconization belongs to the technical field of magnesite beneficiation and purification technology. The application of the selective inhibitor EDTMPS in magnesite flotation desiliconization is specifically adding the selective inhibitor EDTMPS in the magnesite flotation desilication process using dodecylamine (DDA) as a collector. According to mass ratio, dodecylamine (DDA):selective inhibitor EDTMPS=(8~12):(3~5). Under the dosage of different selective inhibitors EDTMPS (sodium ethylenediamine tetramethylene bisphosphonate), magnesite and silicon-containing gangue minerals in magnesite—the difference in buoyancy of quartz, the magnesite The removal of silicon-containing gangue minerals in magnesia improves the quality of magnesite and provides a new agent for beneficiation and desiliconization of high-silicon and low-grade magnesite.

Description

technical field [0001] The invention relates to the technical field of magnesite beneficiation and purification technology, in particular to the application of a selective inhibitor EDTMPS in flotation desiliconization of magnesite. Background technique [0002] Magnesite is an important raw material for construction materials, chemical industry, light industry and metal magnesium extraction. However, in the past few decades, with the extensive development and irrational utilization of magnesite resources, low-grade magnesite rich in silicon, iron and silicon impurities has occupied the majority of magnesite. Therefore, reducing the impurity content (such as SiO 2 ) to improve the quality of magnesite ore powder becomes crucial. Quartz (SiO 2 ), is the main silicon-containing gangue mineral of magnesite, and the separation of magnesite and silicon-containing gangue mineral is mainly realized by reverse flotation. At present, much research on the separation of magnesite a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/014B03D1/01B03B1/00B03D1/002B03D101/06B03D101/02B03D101/00B03D103/04
CPCB03B1/00B03D1/002B03D1/01B03D1/014B03D2201/007B03D2201/02B03D2201/06B03D2203/04
Inventor 姚金孙浩然王俪赢曹少航盛秋月班小淇杨斌
Owner NORTHEASTERN UNIV LIAONING
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