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Additive for removing ammonia nitrogen in electrolytic manganese residues and removal method thereof

A technology for electrolytic manganese slag and additives, which is applied in the field of additives for removing ammonia nitrogen in electrolytic manganese slag and its removal, can solve the problems of high dependence on primary resources, high temperature conditions, and high energy consumption, and achieve shortened process chains, The effect of high removal rate and low energy consumption

Active Publication Date: 2020-08-28
UNIV OF SCI & TECH BEIJING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All of the above patents can recover ammonia nitrogen resources in electrolytic manganese slag, but these methods are either highly dependent on primary resources such as quicklime, or require high temperature conditions, high energy consumption and high cost

Method used

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  • Additive for removing ammonia nitrogen in electrolytic manganese residues and removal method thereof
  • Additive for removing ammonia nitrogen in electrolytic manganese residues and removal method thereof
  • Additive for removing ammonia nitrogen in electrolytic manganese residues and removal method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051]Accurately weigh 1g of water reducing agent and 90g of deionized water at room temperature and mix evenly. Put 19 parts of alkaline solid waste and water into the mixer and stir until the alkaline solid waste is evenly dispersed in the water without obvious large particles. Then add 100 parts of electrolytic manganese slag, stir evenly, add 8 parts of calcium-containing basic compound in batches and stir evenly, add 35 parts of red mud and stir evenly, and stir 24 parts of fly ash to obtain a slurry. Quickly pour the viscous slurry into a pan and spread it out, and keep it warm at 60°C for 50 minutes to obtain an electrolytic manganese slag product with low ammonia and nitrogen. Take 100 parts of low-ammonia products, mix with 10 parts of ordinary cement and 12 parts of water, put them into a 2cm×2cm×2cm mold, vibrate to form and seal the mold with a plastic wrap, and place it in a constant temperature box at 20°C and 90% humidity. After 1 day of curing, take out the dem...

Embodiment 2

[0054] Accurately weigh 1g of water reducing agent and 90g of room temperature manganese slag leachate and mix evenly. Put 19 parts of alkaline solid waste and water into a mixer and stir until the alkaline solid waste is evenly dispersed in the water without obvious large particles. Then add 100 parts of electrolytic manganese slag, stir evenly, add 8 parts of calcium-containing basic compound in batches and stir evenly, add 35 parts of red mud and stir evenly, and stir 24 parts of fly ash to obtain a slurry. Quickly pour the viscous slurry into a pan and spread it out, and keep it warm at 60°C for 50 minutes to obtain an electrolytic manganese slag product with low ammonia and nitrogen. Take 100 parts of low-ammonia products, mix with 10 parts of ordinary cement and 12 parts of water, put them into a 2cm×2cm×2cm mold, vibrate to form and seal the mold with a plastic wrap, and place it in a constant temperature box at 20°C and 90% humidity. After 1 day of curing, take out the...

Embodiment 3

[0057] Accurately weigh 1g of water reducing agent and 90g of manganese slag leachate and mix evenly, put 19 parts of alkaline solid waste and water into a mixer and stir until the alkaline solid waste is evenly dispersed in the water without obvious large particles. Then add 100 parts of electrolytic manganese slag, stir evenly, add 8 parts of calcium-containing basic compound in batches and stir evenly, add 35 parts of red mud and stir evenly, and stir 24 parts of fly ash to obtain a slurry. Quickly pour the viscous slurry into a pan and spread it out, and keep it warm at 60°C for 50 minutes to obtain an electrolytic manganese slag product with low ammonia and nitrogen. Take 100 parts of low-ammonia products, mix with 10 parts of ordinary cement and 12 parts of water, put them into a 2cm×2cm×2cm mold, vibrate to form and seal the mold with a plastic wrap, and place it in a constant temperature box at 20°C and 90% humidity. After 1 day of curing, take out the demoulding, put ...

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Abstract

The invention relates to an additive for removing ammonia nitrogen in electrolytic manganese residues and a removal method thereof. The additive comprises the following components in parts by weight:25-40 parts of an alkaline compound, 14-35 parts of fly ash, 25-46 parts of red mud, 85-100 parts of a solvent and 0.9-1.3 parts of a water reducing agent, wherein the alkaline compound comprises 15-35 parts of alkaline solid waste and 6-15 parts of a calcium-containing alkaline compound. Soluble ammonium salt in the electrolytic manganese residues with complex components can be converted into ammonia monohydrate which is easy to decompose, the ammonia monohydrate is converted into collected ammonia gas under the action of heat energy and mechanical energy, and a mixture obtained through a deamination treatment process can be directly mixed with materials such as slag and cement to prepare building materials meeting the national standard. According to the method, the purpose of efficientlyconverting the ammonia nitrogen unit in the electrolytic manganese slag is achieved, the electrolytic manganese slag product is prevented from emitting peculiar smell to harm the health of residents,and the purposes of comprehensively and cyclically utilizing resources and relieving the environmental pressure are achieved.

Description

technical field [0001] The invention belongs to the technical field of resource utilization of industrial solid waste, and in particular relates to an efficient and environment-friendly additive for removing ammonia nitrogen in electrolytic manganese slag and a removal method thereof. Background technique [0002] my country is the world's largest producer of manganese metal, and the manganese triangle is an important output area of ​​manganese metal in China. High output means high output of electrolytic manganese slag. With the decline of manganese ore quality, the output of electrolytic manganese slag The rate also gradually increased. The low utilization rate of electrolytic manganese slag has led to an increase in the storage of manganese slag year by year, and the stockpiling of electrolytic manganese slag has caused serious environmental pollution. The composition of electrolytic manganese slag is complex. Among its main chemical compositions, silicon oxide, aluminum ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B22/06B09B3/00C04B18/04C04B28/02
CPCB09B3/00C04B18/0427C04B28/02C04B40/0039C04B2111/00017C04B18/12C04B18/0409C04B18/08C04B22/064C04B22/068Y02W30/91
Inventor 刘晓明任咏玉杜根杰王亚光张未刘新月
Owner UNIV OF SCI & TECH BEIJING
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