Manganese and ammonium sulfate treatment and recovery method in electrolytic manganese slag

A technology of electrolytic manganese slag and recovery method, applied in chemical instruments and methods, ammonium sulfate, sustainable waste treatment, etc. problems, to achieve the effect of improving efficiency, increasing leaching rate, and reducing processing procedures

Active Publication Date: 2020-12-04
SCI RES ACADEMY OF GUANGXI ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problems of low recovery efficiency in the treatment and recovery process of electrolytic manganese slag in the prior art, a large amount of water resources are consumed during treatment, a lot of time is spent on cumbersome processes, and the final harmless treatment waste residue is low in utilization, and then an electrolytic manganese slag is provided. Manganese and ammonium sulfate treatment recovery method in manganese slag

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  • Manganese and ammonium sulfate treatment and recovery method in electrolytic manganese slag

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Experimental program
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Embodiment 1

[0029] The method for treating and recovering manganese and ammonium sulfate in electrolytic manganese slag comprises the following steps:

[0030] (1) Anolyte leaching: 2.5 parts of anolyte in the electrolytic solution workshop (manganese ion concentration is 17g / L, ammonium sulfate concentration is 72g / L, pH value is 1.2), 1 part of electrolytic manganese slag (manganese content is 4.5 %, the ammonium sulfate content is 5.0%), 0.03 parts of starch, 0.03 parts of glucose, and 0.01 part of cetyltrimethylammonium bromide are mixed, stirred evenly and maintained at 50 ° C for 110 minutes to obtain pulp;

[0031] (2) Pressure filtration: pump the ore pulp into the diaphragm filter press, adjust the valve to control the feed pressure to 0.2MPa, perform pressure filtration and collect the leachate;

[0032] (3) Water washing: turn on the water tank pump, the water tank is mine wastewater from manganese mine enterprises (the concentration of manganese ions is 0.1g / L, the concentrati...

Embodiment 2

[0038] The method for treating and recovering manganese and ammonium sulfate in electrolytic manganese slag comprises the following steps:

[0039] (1) Anolyte leaching: 3 parts of anolyte in the electrolytic solution workshop (manganese ion concentration is 20g / L, ammonium sulfate concentration is 77g / L, pH value is 1.6), 1.5 parts of electrolytic manganese slag (manganese content is 5.0 %, ammonium sulfate content is 5.5%), 0.05 parts of starch, 0.05 parts of glucose, 0.02 parts of cetyltrimethylammonium bromide are mixed, stirred evenly and kept at 60 ° C for 130 min to obtain pulp;

[0040] (2) Pressure filtration: pump the ore slurry into the diaphragm filter press, adjust the valve to control the feed pressure to 0.4MPa, perform pressure filtration and collect the leachate;

[0041](3) Water washing: turn on the water tank pump, the water tank is manganese ore enterprise mine wastewater (manganese ion concentration is 0.3g / L, ammonium sulfate concentration is 1.2g / L, pH ...

Embodiment 3

[0047] The method for treating and recovering manganese and ammonium sulfate in electrolytic manganese slag comprises the following steps:

[0048] (1) Anolyte leaching: 3 parts of anolyte in the electrolytic solution workshop (manganese ion concentration is 18g / L, ammonium sulfate concentration is 77g / L, pH value is 1.6), 1 part of electrolytic manganese slag (manganese content is 5.0 %, the content of ammonium sulfate is 5.5%), 0.03 part of starch, 0.03 part of glucose, and 0.02 part of cetyltrimethylammonium bromide are mixed, stirred evenly and maintained at 60 ° C for 120 minutes to obtain pulp;

[0049] (2) Pressure filtration: pump the ore slurry into the diaphragm filter press, adjust the valve to control the feed pressure to 0.4MPa, perform pressure filtration and collect the leachate;

[0050] (3) Water washing: turn on the water tank pump, the water tank is manganese ore enterprise mine wastewater (manganese ion concentration is 0.3g / L, ammonium sulfate concentratio...

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Abstract

The invention discloses a method for recycling manganese and ammonium sulfate from electrolytic manganese slag. The method comprises the following steps: performing acid leaching on manganese slag with an anode liquor of electrolytic manganese ore; performing water washing and alkali washing on filter residue in conjunction with a membrane filter press with a washing function to prepare baking-free bricks in order to realize integral completion of the recycling of the manganese and ammonium sulfate from the manganese slag and harmless treatment of the manganese slag. The method is simple in process, agents used are cheap and convenient to obtain, the utilization rate of manganese ore resources can be increased without great modification on the existing production processes and equipment ofelectrolytic manganese enterprises, and the treatment cost on waste residue generated by the electrolytic manganese is lowered.

Description

technical field [0001] The invention relates to a process for treating metal slag, in particular to a method for treating and recovering manganese and ammonium sulfate in electrolytic manganese slag. Background technique [0002] Electrolytic manganese slag (referred to as manganese slag) is the waste slag produced in the process of producing metal manganese (Mn) by electrolysis. Manganese sulfate, ammonium sulfate and other heavy metals remaining in the manganese slag are easy to form leachate from precipitation and enter the water body, causing environmental pollution. While people are studying the harmless treatment of electrolytic manganese slag, they are also studying how to recover the manganese in electrolytic manganese slag. Since there are both water-soluble manganese sulfate and acid-soluble manganese carbonate in electrolytic manganese slag, people have adopted corresponding methods according to the characteristics of these two types of manganese compounds. For ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/10C01C1/24C01G45/00C04B18/14C22B7/04
CPCC01C1/24C01G45/00C04B18/144C04B28/10C04B2201/50C22B7/006C22B7/04C04B18/08C04B7/00C04B24/12C04B22/002Y02W30/91Y02P10/20
Inventor 赵侣璇刘凯张立宏宋晓薇覃楠钧樊勇吉徐荣乐谢祎敏
Owner SCI RES ACADEMY OF GUANGXI ENVIRONMENTAL PROTECTION
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