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Method for performing flotation separation on garnet from magnetic separation brown iron ore concentrate

A technology of garnet and limonite, applied in flotation, solid separation, etc., can solve the problems of difficult separation, high garnet content, low iron concentrate grade and recovery rate, etc., and achieve simple process structure and low chemical dosage little effect

Active Publication Date: 2014-04-02
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the recovery process of some low-grade limonite containing garnet, the limonite concentrate with a grade of 47-49% can be obtained by magnetic separation with a strong magnetic separator after ore grinding until the mineral monomers are dissociated. This kind of limonite concentrate cannot be used as smelting raw material for iron smelting. On the one hand, because the iron grade is too low, the smelting cost is too high and has no economic value; , but also reduce the life of the smelting furnace
For this kind of limonite concentrate containing garnet, it is necessary to increase the grade of limonite concentrate and reduce the garnet content in the concentrate before it can be used. Because limonite and garnet have similar buoyancy and magnetic properties, it is generally difficult to separate them. Even if it is separated effectively, the grade and recovery rate of iron concentrate are not high, which limits the development and utilization of limonite

Method used

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  • Method for performing flotation separation on garnet from magnetic separation brown iron ore concentrate
  • Method for performing flotation separation on garnet from magnetic separation brown iron ore concentrate
  • Method for performing flotation separation on garnet from magnetic separation brown iron ore concentrate

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Embodiment 1

[0019] The technical solution of the present invention will be further described below through examples.

[0020] The method of flotation separation garnet from magnetic separation limonite concentrate of the present invention, concrete steps and medicament system are as follows:

[0021] 1. Mineral raw materials:

[0022] The content of iron in the mineral raw materials used is 47.51%, and the content of garnet is 16.24%. The phase analysis shows that iron mainly exists in the form of limonite, a small amount of hematite and hemimorphite, and the gangue minerals are mainly garnet, silicon It exists in the form of acid salt, and a small amount of silica minerals.

[0023] 2. Flotation agents and operating conditions:

[0024]

[0025] When in use, the medicament is first prepared into the following weight percent concentrations:

[0026]

[0027]

[0028] During the flotation process, add limonite concentrate to the mixing tank to adjust the pulp, add sodium carbon...

Embodiment 2

[0030] 1. Mineral raw materials:

[0031] The content of iron in the mineral raw materials used is 48.65%, and the content of garnet is 15.77%. The phase analysis shows that iron mainly exists in the form of limonite, a small amount of hematite and hemimorphite, and the gangue minerals are mainly garnet, silicon It exists in the form of acid salt, and a small amount of silica minerals.

[0032] 2. Flotation agents and operating conditions:

[0033]

[0034] When in use, the medicament is first prepared into the following weight percent concentrations:

[0035]

[0036]

[0037] During the flotation process, add limonite concentrate to the mixing tank to adjust the pulp, add sodium carbonate to adjust the pH value of the pulp to 7.5-8, then add basic fuchsin and hydroxymethyl cellulose as inhibitors of garnet, and then add Add calcium oxide as limonite activator, and finally add oxidized paraffin wax soap as limonite collector to collect limonite concentrate product....

Embodiment 3

[0039] 1. Mineral raw materials:

[0040] The content of iron in the mineral raw materials used is 49.32%, and the content of garnet is 14.91%. According to the phase analysis, iron mainly exists in the form of limonite, a small amount of hematite and hemimorphite, and the gangue minerals are mainly garnet, silicon It exists in the form of acid salt, and a small amount of silica minerals.

[0041] 2. Flotation agents and operating conditions:

[0042]

[0043] When in use, the medicament is first prepared into the following weight percent concentrations:

[0044]

[0045]

[0046] During the flotation process, add limonite concentrate to the mixing tank to adjust the pulp, add sodium carbonate to adjust the pH value of the pulp to 7.5-8, then add basic fuchsin and hydroxymethyl cellulose as inhibitors of garnet, and then add Add calcium oxide as limonite activator, and finally add oxidized paraffin wax soap as limonite collector to collect limonite concentrate produ...

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Abstract

The invention discloses a method for performing flotation separation on garnet from magnetic separation brown iron ore concentrate. The content of iron in raw mineral materials is 47.51-49.32%, and the content of the garnet in raw mineral materials is16.24-14.91%. The phase analysis shows that the iron mainly exists in the form of the brown iron ore and seldom in the form of haematite and hemimorphite, and gangue mineral mainly exists in the form of the garnet and silicate and seldom in the form of silica mineral. According to the method, sodium carbonate serves as a pH regulator, basic fuchsin and hydroxymethyl cellulose serve as inhibitors of the garnet, calcium oxide serves as an activator of the brown iron ore, and oxygen fossils preserved soap serves as a collector of the brown iron ore. By means of the method, the flotation separation on the brown iron ore and the garnet can be achieved, and grade of the grown iron ore concentrate is effectively improved. Under the condition of the feeding iron content of 47.51-49.32%, after the flotation separation, iron ore concentrate with the iron content of 55.18-56.70% and the recovery rate of 85.11-87.63% is obtained.

Description

1. Technical field [0001] The invention relates to a mineral flotation separation method, in particular to a method for flotation separation of garnet from magnetically separated limonite concentrate. 2. Background technology [0002] In the recovery process of some low-grade limonite containing garnet, the limonite concentrate with a grade of 47-49% can be obtained by magnetic separation with a strong magnetic separator after ore grinding until the mineral monomers are dissociated. This kind of limonite concentrate cannot be used as smelting raw material for iron smelting. On the one hand, because the iron grade is too low, the smelting cost is too high and has no economic value; , At the same time, it also reduces the life of the smelting furnace. For this kind of limonite concentrate containing garnet, it is necessary to increase the grade of limonite concentrate and reduce the garnet content in the concentrate before it can be used. Because limonite and garnet have simi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03D1/018
Inventor 魏宗武
Owner GUANGXI UNIV
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