Flocculating-magnetic seperation method of low-grade carbonic acid manganese ore

A low-grade manganese carbonate ore technology, applied in chemical instruments and methods, magnetic separation, solid separation, etc., can solve the problem of increasing the production cost of the electrolytic manganese process, and the hydrophobic flocculation of low-grade manganese carbonate ore is difficult to be selective and increase. Sulfuric acid consumption and other problems, to achieve the effect of high resource utilization efficiency, improved comprehensive recovery efficiency, and high recovery rate

Inactive Publication Date: 2012-05-02
WUHAN UNIV OF SCI & TECH
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  • Application Information

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Problems solved by technology

This process is mainly used in the flotation of fine-grained minerals, but because most low-grade manganese carbonate ores are accompanied by a large amount of calcite and dolomite with similar surface chemical properties, it is difficult to be selective in the hydrophobic flocculation of low-grad

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  • Flocculating-magnetic seperation method of low-grade carbonic acid manganese ore
  • Flocculating-magnetic seperation method of low-grade carbonic acid manganese ore

Examples

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Embodiment 1

[0023] A flocculation-magnetic separation method for low-grade manganese carbonate ore. The low-grade manganese carbonate ore has a manganese content of 8.57-8.94wt% and an iron content of less than 5wt%. The steps of flocculation-magnetic separation are:

[0024] The first step is to crush and grind the low-grade manganese carbonate ore until the particle size is less than 0.074mm, accounting for more than 60wt%, add water to adjust the slurry to a mass concentration of 15-20wt%, and obtain the ore pulp;

[0025] In the second step, the ore slurry obtained in the first step is subjected to strong magnetic roughing to obtain strong magnetic roughing concentrate and tailings after strong magnetic roughing;

[0026] The third step is to concentrate the tailings after the strong magnetic roughing in the second step to a mass concentration of 25~30wt%, and then carry out stirring and flocculation in a container with an external magnetic field. During the stirring process, first a...

Embodiment 2

[0031] A flocculation-magnetic separation method for low-grade manganese carbonate ore. The low-grade manganese carbonate ore has a manganese content of 8.84-9.11wt% and an iron content of less than 5wt%.

[0032] Present embodiment except following difference, all the other are the same as embodiment 1: adjusting agent is sodium bicarbonate; Dispersant is the mixture of water glass, tannic acid and sodium carboxymethyl cellulose; Flocculant is oleic acid, sodium oleate , a mixture of sodium lauryl sulfonate, sodium petroleum sulfonate, oxidized paraffin soap and tall oil.

[0033] The strong magnetic sweeping concentrate obtained in this embodiment: the manganese concentrate yield is 34.54~36.05wt%, the manganese content is 18.76~19.24wt%, the comprehensive recovery rate is 72.92~76.55wt%, and the manganese content of the ore has increased by 9.93 ~10.13wt%.

Embodiment 3

[0035] A flocculation-magnetic separation method for low-grade manganese carbonate ore. The low-grade manganese carbonate ore has a manganese content of 8.00-8.60wt% and an iron content of less than 5wt%.

[0036] This embodiment is the same as Embodiment 1 except for the following differences: the regulator is sodium hydroxide; the dispersant is a mixture of sodium hexametaphosphate, tannic acid and sodium carboxymethylcellulose; Mixture of Sodium Dialkyl Sulfate, Sodium Petroleum Sulfonate and Oxidized Paraffin Soap.

[0037] The strong magnetic sweeping concentrate obtained in this embodiment: the yield of manganese concentrate is 31.02~35.71wt%, the manganese content is 18.77~19.07wt%, the comprehensive recovery rate is 73.96~77.94wt%, and the manganese content of the ore has increased by 10.17% ~11.07wt%.

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Abstract

The invention relates to a flocculation-magnetic seperation method of low-grade carbonic acid manganese ore; the flocculating-magnetic seperation method comprises the following steps of: crushing the low-grade carbonic acid manganese ore, then grinding the ore till ore particles with the particle size less than 0.074mm accounts for more than 60wt%, adding water to the ore particles to condition pulp till the mass concentration is 15-30wt%, and carrying out strong magnetic rough concentration to respectively obtain strong magnetic rough concentration ore concentrate and tailings after strong magnetic rough concentration; then concentrating the tailings after strong magnetic rough concentration till the mass concentration is 15-30wt%, carrying out stirring flocculation in a container accompanied by an imposed magnetic field, adding a modifying agent in the stirring process to adjust the Ph value of ore pulp to be 8-10, and then sequentially adding a dispersing agent and a flocculating agent, wherein the addition amount of the dispersing agent is 1000-3000g per ton of dry ore, and the addition amount of the flocculating agent is 1000-2000g per ton of dry ore, and finally carrying strong magnetic scavenging on the ore pulp of the strong magnetic rough tailings subjected to flocculation processing to obtain the strong magnetic scavenging ore concentrate. Therefore, the flocculation-magnetic seperation method has the characteristics of high utilization ratio of resources, high comprehensive recovery rate and economic feasibility.

Description

technical field [0001] The invention belongs to the technical field of mechanical beneficiation. Specifically relates to a flocculation-magnetic separation method of low-grade manganese carbonate ore. Background technique [0002] The world's resources are increasingly depleted, and the comprehensive utilization of resources is one of the current hot spots of scientific and technological innovation to increase revenue and reduce expenditure. Manganese is an important basic resource and strategic material in my country, and its demand has been increasing in recent years. Manganese carbonate ore resources in foreign countries have a relatively high manganese content, generally above 30wt%, and manganese concentrates with a manganese content above 40wt% can be obtained by simple beneficiation process. However, the manganese carbonate ore in my country has low manganese content, high impurity content, and fine particle size. After nearly 10 years of rapid consumption, the mang...

Claims

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Application Information

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IPC IPC(8): B03C1/00B03B1/00B03B1/04
Inventor 李茂林秦勤崔瑞杨鑫曾凡霞邓丽君刘鹏王帆向文娟颜亚梅张仁丙郭娜娜郑霞裕
Owner WUHAN UNIV OF SCI & TECH
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