Application of selective inhibitor EDTMPS in magnesite flotation desilicication

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, good chemical stability and temperature resistance, and easy operation Effect

Active Publication Date: 2020-12-29
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 magnesite flotation desilicication
  • Application of selective inhibitor EDTMPS in magnesite flotation desilicication
  • Application of selective inhibitor EDTMPS in magnesite flotation desilicication

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 invention discloses an application of a selective inhibitor EDTMPS in magnesite flotation desilicication, and belongs to the technical field of magnesite beneficiation and purification processes.The application of the selective inhibitor EDTMPS in magnesite flotation desilicication specifically comprises the step of adding the selective inhibitor EDTMPS in a magnesite flotation desilicicationprocess adopting dodecylamine (DDA) as a collecting agent. Wherein the mass ratio of the dodecylamine (DDA) to the selective inhibitor EDTMPS is (8-12): (3-5). The silicon-containing gangue mineral in the magnesite is removed through the floatability difference of the magnesite and the silicon-containing gangue mineral-quartz in the magnesite under the dosage of different selective inhibitors EDTMPS (Ethylene Diamine Tetramethylene Phosphonate Sodium), the quality of the magnesite is improved, and a new agent is provided for ore dressing and desilicication of the high-silicon 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 Applications(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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