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Collaborative curing treatment method for electrolytic manganese slag and red mud

A technology for electrolytic manganese slag and solidification treatment, which is applied in chemical instruments and methods, inorganic chemistry, ammonia compounds, etc., to achieve the effects of reducing dosage, cost, and treatment cost

Inactive Publication Date: 2021-01-05
GUIZHOU ACAD OF ENVIRONMENTAL SCI & DESIGNING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method provided by the invention uses red mud, red mud leachate, and quicklime to stabilize manganese ions and ammonia nitrogen in electrolytic manganese slag, solves the problem of harmless storage or reuse of electrolytic manganese slag, and realizes red mud recycling at the same time Utilize, the method provided by the present invention is the green process of treating waste with waste

Method used

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  • Collaborative curing treatment method for electrolytic manganese slag and red mud
  • Collaborative curing treatment method for electrolytic manganese slag and red mud
  • Collaborative curing treatment method for electrolytic manganese slag and red mud

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Experimental program
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Effect test

Embodiment 1

[0056] A method for synergistic solidification treatment of electrolytic manganese slag and red mud, comprising the following steps:

[0057] (1) Take electrolytic manganese slag and old red mud and air-dry until the water content is below 20wt%, and then transport electrolytic manganese slag, old red mud and quicklime to the crusher for crushing to obtain electrolytic manganese slag powder and old red mud. Mud powder and quicklime powder, the particle size of electrolytic manganese slag powder is 50 mesh, the particle size of old red mud powder is 50 mesh, and the particle size of quicklime powder is 140 mesh; then take 10kg of electrolytic manganese slag powder, old red mud powder Add 3kg into the mixer, then add 2L of the first red mud leachate, the pH of the first red mud leachate is 10, carry out the first stirring, the stirring speed is 100r / min, the stirring time is 10-15min, and the ammonia gas is recovered , to obtain the first mixture;

[0058] (2) Transfer the firs...

Embodiment 2

[0062] A method for synergistic solidification treatment of electrolytic manganese slag and red mud, comprising the following steps:

[0063] (1) Take electrolytic manganese slag and fresh red mud and air-dry until the water content is below 20wt%, then transport electrolytic manganese slag, fresh red mud and quicklime to the crusher for crushing treatment to obtain electrolytic manganese slag powder and fresh red mud powder and quicklime powder, the particle diameter of electrolytic manganese slag powder is 120 mesh, the particle diameter of fresh red mud powder is 100 mesh, and the particle diameter of quicklime powder is 80 mesh; then take electrolytic manganese slag powder 10kg, fresh red mud powder 3kg and add to In the mixer, add 2L of the first red mud leachate, the pH of the first red mud leachate is 12.5, carry out the first stirring, the stirring speed is 150r / min, the stirring time is 10-15min, recover the ammonia gas, and obtain the second a mixture;

[0064] (2) ...

Embodiment 3

[0068] A method for synergistic solidification treatment of electrolytic manganese slag and red mud, comprising the following steps:

[0069] (1) Transport the electrolytic manganese slag, old red mud and quicklime to the crusher for crushing, and obtain electrolytic manganese slag powder, old red mud powder and quicklime powder. The particle size of the electrolytic manganese slag powder is 120 mesh, and the old The particle size of permanent red mud powder is 120 mesh, and the particle size of unslaked lime powder is 50 mesh; then take 10kg of electrolytic manganese slag powder and 6kg of old red mud powder and add them to the mixer, then add 3L of the first red mud leachate, the second 1. The pH of the red mud leachate is 12.5, and the first stirring is performed at a stirring rate of 150 r / min for 10 to 15 minutes, and ammonia gas is recovered to obtain the first mixture;

[0070] (2) The first mixture that step (1) obtains is transferred into the first mixer, then add the...

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Abstract

The invention provides a collaborative curing treatment method for electrolytic manganese slag and red mud. According to the method, quick lime, red mud and red mud leachate are adopted as raw materials to effectively cure and stabilize the electrolytic manganese slag, soluble alkali in the red mud exists in water in the form of OH-, reacts with manganese ions to generate precipitate, and reacts with ammonia nitrogen (NH3-N) to generate ammonia gas, and thus pollutants in the electrolytic manganese slag can be effectively removed. On one hand, the red mud leachate plays a role of a solvent, onthe other hand, alkaline substances in the red mud leachate play a role of reactants, thus the reaction rate is increased, and the treatment cost is reduced. The red mud and the red mud leachate areused, so that the use amount of the quick lime is effectively reduced, and the treatment cost is further reduced. According to the method, a step-by-step reaction means is adopted, the reaction efficiency is effectively improved, and the curing rate of manganese ions in the electrolytic manganese slag reaches 93.7% or above.

Description

technical field [0001] The invention belongs to the technical field of electrolytic manganese slag treatment, and in particular relates to a method for synergistic solidification treatment of electrolytic manganese slag and red mud. Background technique [0002] Manganese metal is a key basic material in the fields of metallurgy, chemical industry and aerospace, and is one of the national strategic resources. Pure manganese is mainly produced by electrolysis, so it is often called electrolytic metal manganese or electrolytic manganese. my country is a big country in the production, consumption and export of electrolytic manganese. According to statistics, in 2016, the output of electrolytic manganese in my country was as high as 1.15 million tons, accounting for more than 98.5% of the world's output of manganese metal. The electrolytic manganese production process will produce a large amount of electrolytic manganese slag, and every ton of electrolytic manganese produced w...

Claims

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Application Information

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IPC IPC(8): B09B1/00C04B28/10C01C1/02
CPCB09B1/00C04B28/10C01C1/026C04B2111/00017C04B2111/00025C04B2111/00767C04B18/0409C04B18/0472
Inventor 刘津张军方
Owner GUIZHOU ACAD OF ENVIRONMENTAL SCI & DESIGNING
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