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Separation method for low-grade manganese ore with high silicon accompanying a little limonite and psilomelane

A technology of low-lean manganese ore and beneficiation method, applied in chemical instruments and methods, high gradient magnetic separator, magnetic separation, etc., can solve the problems of poor production and operation efficiency, poor separation effect, etc., and achieve reduced production and separation. The effect of process flow, improving grade and reducing production cost

Inactive Publication Date: 2015-09-30
马凤祥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] For this kind of low manganese ore with high silicon associated with a small amount of limonite and a small amount of hard manganese ore, the ore is usually separated by elutriation, gravity separation and permanent magnetic separation The separation effect is poor, and the production shows that: the conventional separation method of this mine, the manganese concentrate grade is only about 18-20%, the recovery rate is about 30%, and the production and operation benefits are often not good

Method used

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  • Separation method for low-grade manganese ore with high silicon accompanying a little limonite and psilomelane
  • Separation method for low-grade manganese ore with high silicon accompanying a little limonite and psilomelane
  • Separation method for low-grade manganese ore with high silicon accompanying a little limonite and psilomelane

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Experimental program
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Effect test

Embodiment 1

[0057] Such as figure 1 As shown, (1) Low-poor manganese ore with high silicon associated with a small amount of limonite and a small amount of manganese ore, the manganese content is 6.16%, and the content of ore particles with a particle size range of 0.005-0.16mm is greater than 70%;

[0058] (2) Stir the minerals for 60 minutes to fully dissociate the manganese minerals and gangue minerals.

[0059] (3) The ore pulp with a raw ore concentration of 20% is subjected to full-size magnetic separation roughing, and the whole amount enters a high-gradient magnetic separator. The roughing magnetic field strength is 1.0T. After obtaining the magnetic concentrate, continue to sweep. The sweeping magnetic field strength is 1.2T, after one rough and one sweep separation, manganese concentrate can be produced at one time, and the tailings can be thrown out to complete the separation of low-poor manganese ore. The process is simple and effective.

[0060]

[0061] Full-size mag...

Embodiment 2

[0066] The test results of the magnetic field strength of the whole particle size magnetic roughing

[0067]

[0068] It can be seen from the results that: with the increase of the magnetic field intensity, the recovery rate of manganese concentrate increases, but the grade of concentrate decreases. When the magnetic field strength is 1.0T, the manganese concentrate grade of 28.51% and the recovery rate of 46.70% can be obtained. It is suitable to choose the magnetic field strength of the coarse selection of the whole grain class as 1.0T.

Embodiment 3

[0070] The test results of magnetic field strength for full-size magnetic separation

[0071]

[0072] The test results show that the 2 grade of magnetic concentrate decreases with the increase of the magnetic field intensity, but the recovery rate increases. Considering comprehensively, the magnetic field intensity of 1.2T is suitable for scanning.

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Abstract

The invention provides a separation method for low-grade manganese ore. The separation method is particularly applied to low-sulfur, low-phosphorous, low-arsenic, low-iron and high-silicon manganese ore with the manganese content lower than 6.5%. The content of a manganese mineral in the ore is lower than 11%, the manganese mineral is mainly the psilomelane with a low crystallization degree and a little pyrolusite, the other metallic oxides are mainly the limonite, and a gangue mineral is mainly quartz and manganese-containing kaolin. The insetting grain size of the psilomelane is small and mainly ranges from 0.005 mm to 0.16 mm, and the insetting grain size of the pyrolusite is relatively beneficial to separation. The low-grade manganese ore with the grain size mainly ranging from 0.005 mm to 0.16 mm enters a high-gradient magnetic separator in a full-dose mode and is separated in a roughing and scavenging alternation mode, the separation magnetic field intensity parameter 1.0 T is adopted for roughing, the separation magnetic field intensity parameter 1.2 T is adopted for scavenging, manganese concentrate can be produced at a time, tailings are thrown out, and then separation of the low-grade manganese ore is completed. The process is simple and effective; when the grade of the original manganese ore ranges from 6.16% to 6.63%, the yield of the manganese concentrate is larger than 14.01%, the grade of the manganese concentrate is larger than 23.22%, the recovery rate is larger than 51.65%, and the separation index is increased.

Description

technical field [0001] The invention discloses a method for beneficiating low manganese ore with high silicon associated limonite and a small amount of hard manganese ore, in particular to the magnetic separation processing of manganese ore resources of quartz with high impurity content and manganese-containing kaolin ore associated with limonite, which belongs to mineral The field of processing. Background technique [0002] Manganese is widely distributed in nature in the form of various compounds. Since it was discovered from hydrous pyrolusite in 1770, people have used various methods to produce metal manganese, manganese alloys, and manganese compounds, which are widely used in industry, agriculture, and military affairs. Manganese minerals are indispensable in the iron and steel industry. As an important raw material, my country is a country with poor manganese resources, and the self-sufficiency of manganese resources is seriously insufficient. Therefore, the comprehe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03C1/025B03C1/30
Inventor 马凤祥
Owner 马凤祥
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