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Method for reducing content of arsenic in high-arsenic manganese ore

A high-arsenic manganese ore, content technology, applied in chemical instruments and methods, magnetic separation, solid separation, etc., can solve the problems of easy sublimation, gasification and volatilization of oxides, pollution of the surrounding environment, deterioration of manganese quality, etc., to achieve environmental protection , Reduce smelting cost and shorten processing time

Inactive Publication Date: 2012-07-11
KUNMING METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the fire production of manganese, arsenic is dispersed in the products of roasting and smelting, and the oxides and solubles of arsenic are highly toxic. Production, pollution of the surrounding environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1. Grind manganese ore with arsenic content of 12.31% until 95% to 98% and pass through a 50-mesh sieve, and prepare slurry with the ratio of 1:12 between the ground manganese ore and water; pump the slurry The strong magnetic material is preliminarily selected by the weak magnetic field magnetic separator at 3000 Oersted; the slurry pretreated by the weak magnetic field magnetic separator is pumped through the high magnetic field magnetic separator at 12000 Oersted to separate the concentrate in the mineral , its arsenic content is 0.51%; the separated tailings can be buried on site or extracted from the arsenic ore due to its high arsenic content.

Embodiment 2

[0016] Example 2. Grind manganese ore with arsenic content of 6.07% until 95% to 98% pass through a 150-mesh sieve, and prepare slurry with the ratio of 1:12 between the ground manganese ore and water; pump the slurry through The weak magnetic field magnetic separator preliminarily selects strong magnetic substances at 3500 Oersted; the slurry pretreated by the weak magnetic field magnetic separator is pumped through the strong magnetic field magnetic separator at 13000 Oersted to separate the concentrate from the minerals, Its arsenic content is 0.47%; the separated tailings can be buried on site or extracted from the arsenic ore due to its high arsenic content.

Embodiment 3

[0017] Example 3. Grind manganese ore with arsenic content of 17.37% until 95% to 98% and pass through a 250-mesh sieve, and prepare slurry from the ground manganese ore and water at a ratio of 1:12; pump the slurry through The weak magnetic field magnetic separator preliminarily selects strong magnetic substances at 4000 Oersted; the slurry pretreated by the weak magnetic field magnetic separator is pumped through the strong magnetic field magnetic separator at 14000 Oersted to separate the concentrate from the minerals, Its arsenic content is 0.36%; the separated tailings can be buried on site or extracted from the arsenic ore due to its high arsenic content.

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Abstract

The invention discloses a method for reducing the content of arsenic in high-arsenic manganese ore. The method comprises the following steps of: grinding ores of the manganese ore till the apertures of 50 to 400 meshes, and preliminarily picking out a strong magnetic material by using a weak-magnetic-field magnetic separator by a wet magnetic separation method; and separating a concentrate in the material of the manganese ore by using a strong-magnetic-field magnetic separator. By the method, most of arsenic and other gangue ingredients in raw ore are removed, and the content of manganese in the concentrate is improved; and meanwhile, the content of the arsenic in the concentrate is reduced.

Description

technical field [0001] The invention belongs to manganese ore treatment, more specifically, it is a method for reducing arsenic content from high-arsenic manganese ore. Background technique [0002] The development of modern industry has strict requirements on metal quality. To obtain high-quality manganese, it is necessary to strictly control various technical conditions. Arsenic is an impurity element present in manganese ore and manganese concentrate. In the fire production of manganese, arsenic is dispersed in the products of roasting and smelting, and the oxides and solubles of arsenic are highly toxic. Production, pollution of the surrounding environment. Therefore, it is necessary to consider the impact of volatile toxic gases on the environment and operators, implement all-round monitoring and management, and consider arsenic recovery and comprehensive treatment technology while developing manganese ore processing and utilization technology. Contents of the inven...

Claims

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Application Information

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IPC IPC(8): B03C1/00
Inventor 包崇军翟忠标李永佳陈加希李怀仁杨大锦刘俊场和晓才徐庆鑫陈家辉
Owner KUNMING METALLURGY INST
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