A kind of solidification treatment method of electrolytic manganese slag

A technology for electrolytic manganese slag and solidification treatment, applied in chemical instruments and methods, solid waste removal, transportation and packaging, etc., can solve the problems affecting technology promotion and industrial application, high pharmaceutical costs, and large dosage at the same time, Achieve good heavy metal adsorption performance, good durability characteristics, and enhance the effect of ammonia removal

Active Publication Date: 2021-05-14
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sodium dihydrogen phosphate, calcium oxide, magnesium oxide, polyacrylamide, sodium hydroxide, and cement are used as harmless treatment agents for electrolytic manganese slag. The cost of the agent is high and the dosage is large, which leads to high overall treatment costs. Seriously affect the promotion and industrial application of technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Take the electrolytic manganese slag and transport it to the crusher for crushing;

[0021] (2) Take by weighing the composite alkaline medicament and add it to water and mix evenly to obtain a composite alkaline medicament solution, wherein the addition of the composite alkaline medicament is 3% of the electrolytic manganese slag weight, and the water addition is 25% of the electrolytic manganese slag weight , the compound alkaline agent is composed of 50% sodium hydroxide, 10% sodium sulfate, 20% sodium chloride and 20% sodium silicate;

[0022] (3) The broken electrolytic manganese slag is transported in the mixer, under stirring state, add (2) composite alkaline agent solution, after stirring for 10min, add 10% curing agent of electrolytic manganese slag weight (curing agent consists of 60% Phosphorus slag, 30% slag, 10% high-calcium fly ash, curing agent ground through 80-mesh sieve, sieve residue is 3%), stirred for 30 minutes, ammonia gas was recovered by amm...

Embodiment 2

[0025] (1) Take the electrolytic manganese slag and transport it to the crusher for crushing;

[0026] (2) Take the composite alkaline agent and add it to the water and mix evenly to obtain a composite alkaline agent solution, wherein the compound alkaline agent addition is 4% of the weight of the electrolytic manganese slag, and the amount of water added is 30% of the weight of the electrolytic manganese slag , the compound alkaline agent is composed of 30% sodium hydroxide, 20% sodium sulfate, 40% sodium chloride and 10% sodium silicate;

[0027] (3) The broken electrolytic manganese slag is transported in the mixer, under stirring state, add (2) composite alkaline agent solution, after stirring for 5min, add 15% curing agent of electrolytic manganese slag weight (curing agent consists of 50% Phosphorus slag, 30% slag, 20% high-calcium fly ash, curing agent ground through 80-mesh sieve, sieve residue is 4%), stirred for 25 minutes, ammonia gas was recovered by ammonia gas co...

Embodiment 3

[0030] (1) Take the electrolytic manganese slag and transport it to the crusher for crushing;

[0031] (2) Take the compound alkaline agent and add it to the water and mix it evenly to make a compound alkaline agent solution, wherein the compound alkaline agent addition is 5% of the electrolytic manganese slag weight, and the water addition is 35% of the electrolytic manganese slag weight , the compound alkaline agent is composed of 40% sodium hydroxide, 15% sodium sulfate, 30% sodium chloride and 15% sodium silicate;

[0032] (3) The broken electrolytic manganese slag is transported in the mixer, under stirring state, add (2) composite alkaline agent solution, after stirring for 8min, add 20% solidifying agent of electrolytic manganese slag weight (curing agent consists of 40% Phosphorus slag, 40% slag, 20% high-calcium fly ash, solidifying agent ground through 80 mesh sieve, sieve residue is 2%), stirred for 20 minutes, ammonia gas was recovered by ammonia gas collection dev...

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PUM

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Abstract

The invention relates to a solidification treatment method of electrolytic manganese slag, which belongs to the technical field of environmental protection; electrolytic manganese slag is mixed with alkaline industrial waste phosphorus slag, slag, high-calcium fly ash, compound alkaline agent, water, etc., and mixed and stirred. The ammonia gas is recovered during the stirring process, and the solidified electrolytic manganese slag is sent to the slag warehouse for storage; this method has a wide range of sources of raw materials, which not only reduces the amount of alkaline chemicals, reduces the cost of electrolytic manganese slag treatment, but also realizes waste treatment. Harmless treatment of waste.

Description

technical field [0001] The invention relates to a solidification treatment method of electrolytic manganese slag, which belongs to the technical field of environmental protection. Background technique [0002] Manganese is one of the important materials and strategic resources of my country's national economy. With the rapid development of the country's economic construction, the demand for manganese has increased, prompting the rapid development of the electrolytic manganese industry. At present, there are 131 electrolytic manganese enterprises in my country, with a production capacity of 2.9 million tons per year and an actual output of 1.15 million tons per year, accounting for more than 98% of the world's production capacity and output. As a typical hydrometallurgical industry, the electrolytic manganese production industry has caused serious harm to the environment while developing rapidly, and the environmental pollution of electrolytic manganese slag is particularly ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B3/00
CPCB09B3/25
Inventor 罗中秋刘佳辉周新涛和森张建辉
Owner KUNMING UNIV OF SCI & TECH
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