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Manganese recovery method based on capacitance absorption concentration

一种电容吸附、回收方法的技术，应用在循环经济领域，达到生产工艺简单、减少污染、克服成本较高的效果

Inactive Publication Date: 2013-11-27
BOYING XIAMEN SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a kind of economical and applicable manganese recovery method from electrolytic manganese waste slag, and the recovery rate High manganese recycling method not only solves the problem of manganese pollution to the environment, but also improves the utilization efficiency of manganese resources

Method used

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  • Manganese recovery method based on capacitance absorption concentration

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Reclaim manganese from a certain electrolytic manganese waste residue, and the recovery steps of its manganese sulfate are as follows:

[0030] Step (1) Extraction: ①, the first extraction: transport the electrolytic manganese waste residue to the extraction tank through the conveyor belt, add water at 20°C, the mass ratio of residue to water is 1:1, and start the mixer at a speed of 500 rpm Minutes, extract for 40 minutes, turn off the mixer; ②Second extraction: add 20°C water to the extraction tank after the first extraction and filtration, the mass ratio of slag to water is 1:0.5, start the mixer, and the speed is 500 rpm Minutes, extract for 40 minutes, turn off the mixer; ③The third extraction: add 20°C water to the extraction tank after the second extraction and filtration, the mass ratio of slag to water is 1:2, start the mixer, and the speed is 500 rpm minutes, extract for 40 minutes, and turn off the blender.

[0031] Step (2) Filtration: The extract obtained ...

Embodiment 2

[0035] Reclaim manganese from a certain electrolytic manganese waste residue, and the recovery steps of its manganese sulfate are as follows:

[0036] Step (1) Extraction: ①. First extraction: transport the electrolytic manganese waste slag to the extraction tank through a conveyor belt, add water at 85°C, the mass ratio of slag to water is 1:2, and start the mixer at a speed of 200 rpm Minutes, extract for 20 minutes, turn off the mixer; ②Second extraction: add 85°C water to the extraction tank after the first extraction and filtration, the mass ratio of slag to water is 1:1, start the mixer, and the speed is 200 rpm Minutes, extract for 20 minutes, turn off the mixer; ③The third extraction: add water at 85°C to the extraction tank after the second extraction and filtration, the mass ratio of slag to water is 1:1, start the mixer, and the speed is 200 rpm minutes, extract for 40 minutes, and turn off the blender.

[0037] Step (2) Filtration: filter the extract obtained from...

Embodiment 3

[0041] Reclaim manganese from a certain electrolytic manganese waste residue, and the recovery steps of its manganese sulfate are as follows:

[0042] Step (1) extraction: same as Example 1 or Example 1.

[0043] Step (2) Filtration: Filtrate the extracted extract to obtain filtrate and filter residue; the filtration is centrifugal filtration, the rotational speed of centrifugal filtration is 800-5000 rpm, and the optimum rotational speed is 1200-2000 rpm. The temperature is normal temperature.

[0044] Step (3) Purification: Same as Example 1 or Example 1.

[0045] Step (4) Concentration: Concentrate the purified extract obtained in step (3) into 38-42g / L manganese sulfate electrolyte through capacitive adsorption; the DC voltage of the capacitive adsorption concentration is 110V / m ~2×10 6 V / m.

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Abstract

A manganese recovery method based on capacitance absorption concentration comprises the following steps: (1) electrolytic manganese residue is extracted for three times by utilizing water at the temperature of 20-85 DEG C under the stirring condition of the rotation speed of 200-500 rotations per minute, the extraction time every time is 20-40 minutes, for the first time the weight ratio between the residue and the water is 1:0.5-1:2, for the second time the weight ratio between the residue and the water is 1:0.5-1:1, and for the third time the weight ratio between the residue and the water is 1:1-1:2, (2) an extracted solution is filtered to obtain filtrate and filter residue, (3) the filtrate obtained from the step (2) is filtered through a micro-filtration membrane or an ultra-filtration membrane to obtain a purified extracted solution, and (4) the purified extracted solution obtained from the step (3) is concentrated in a capacitance absorption mode to obtain manganese sulfate electrolyte, wherein the concentration of divalent manganous ions is 38-42 g / L. The manganese recovery method based on the capacitance absorption concentration is not only capable of recovering manganese from the waste residue for producing electrolytic manganese, but also suitable for enriching the manganese in low-grade manganese ore to produce manganese products.

Description

technical field [0001] The invention relates to a method for recovering manganese based on capacitive adsorption and concentration, in particular to a method for extracting manganese sulfate solution from electrolytic manganese waste residue and recovering manganese sulfate through capacitive adsorption and concentration, which belongs to the field of circular economy. Background technique [0002] Manganese and manganese alloys are one of the indispensable and important raw materials in the steel industry, aluminum alloy industry, magnetic material industry, chemical industry, etc. Manganese is an indispensable additive in the smelting industry. There are two methods of producing manganese metal. One is electrolysis, and the product is electrolytic manganese metal; the other is manganese-rich ore and high-silicon-manganese-silicon alloy as raw materials, which are produced by electric furnace desiliconization and refining, and the product is called manganese metal. [0003...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/04C25C1/10C02F1/469
CPCY02P10/20
Inventor 张世文宁鹏
Owner BOYING XIAMEN SCI & TECH
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