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Method for recovering ammonium root in electrolytic manganese slag

A technology of electrolyzing manganese slag and ammonium root, applied in the direction of ammonium sulfate, etc., can solve environmental risks and other problems, and achieve the effect of reducing the amount of use

Active Publication Date: 2017-06-16
GUIZHOU RES INST OF CHEM IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The manganese sulfate, ammonium sulfate and other sulfates contained in the electrolytic manganese slag are all water-soluble, and a large amount of high-concentration leachate has a huge potential environmental risk to the local water body

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The invention provides a method for recovering ammonium root in electrolytic manganese slag, which specifically comprises the following steps:

[0026] 1) After pulverizing 1 ton of electrolytic slag to 50-200 mesh, add alkaline agents, water-soluble resin sulfonate additives, and a mixture of sodium phosphate and sodium silicate, and heat the temperature to 60°C, stirring for 50 minutes , to get ammonia gas,

[0027] Wherein, the amount of the alkaline agent accounts for 6.5% to 9% of the electrolytic slag, and the alkaline agent is composed of 90% quicklime and 10% slaked lime; the amount of the water-soluble resin sulfonate additive accounts for 0.1% of the slag; the amount of the mixture of sodium phosphate and sodium silicate accounts for 0.1% of the electrolytic slag, and the mixing ratio of the mixture of sodium phosphate and sodium silicate is 80% sodium phosphate and 20% silicon Sodium acid;

[0028] The above specific steps are:

[0029] ① Add water-soluble...

Embodiment 2

[0038] The invention provides a method for recovering ammonium root in electrolytic manganese slag, which specifically comprises the following steps:

[0039] 1) After pulverizing 1 ton of electrolytic slag to 50-200 meshes, add alkaline agents, water-soluble resin sulfonate additives, and a mixture of sodium phosphate and sodium silicate, and heat the temperature to 99°C, stirring for 100 minutes , to get ammonia gas,

[0040] Wherein, the amount of the alkaline agent accounts for 6.5% to 9% of the electrolytic slag, and the alkaline agent is composed of 80% quicklime and 20% slaked lime; the amount of the water-soluble resin sulfonate additive accounts for 1% of the slag; the amount of the mixture of sodium phosphate and sodium silicate accounts for 0.5% of the electrolytic slag, and the mixing ratio of the mixture of sodium phosphate and sodium silicate is 60% sodium phosphate and 40% silicon Sodium acid;

[0041] The specific steps in the above are:

[0042] ①Add water-...

Embodiment 3

[0051] The invention provides a method for recovering ammonium root in electrolytic manganese slag, which specifically comprises the following steps:

[0052] 1) After pulverizing 1 ton of electrolytic slag to 50-200 mesh, add alkaline agent B, water-soluble resin sulfonate additives, and a mixture of sodium phosphate and sodium silicate, and heat to 80°C, stir React 80min, obtain ammonia gas,

[0053] Wherein, the amount of the alkaline agent accounts for 6.5% to 9% of the electrolytic slag, and the alkaline agent is composed of 85% quicklime and 15% slaked lime; the amount of the water-soluble resin sulfonate additive accounts for 0.5% of the slag; the consumption of the mixture of sodium phosphate and sodium silicate accounts for 0.3% of the electrolytic slag, and the mixing ratio of the mixture of sodium phosphate and sodium silicate is 70% sodium phosphate and 30% silicon Sodium acid;

[0054] The above specific steps are:

[0055] ①Add water-soluble resin sulfonate ad...

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PUM

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Abstract

The invention provides a method for recovering ammonium root from electrolytic manganese slag, which belongs to a solid waste treatment method, comprising mixing and reacting electrolytic slag with alkaline agents, washing with ammonia gas, absorbing ammonia gas, and concentrating and drying to obtain ammonium sulfate product; In the present invention, the ammonium root is mostly converted into ammonia gas through the reaction of the electrolytic slag with the alkaline agent in the aqueous solution, and the ammonium sulfate product is obtained by concentrated crystallization and drying treatment after ammonia gas washing and sulfuric acid absorption. Through the above-mentioned process, it can Most of the ammonium radicals in the electrolytic slag are converted into ammonium sulfate products, so that the ammonium radicals are effectively separated.

Description

technical field [0001] The invention relates to a method for treating solid waste, in particular to a method for recovering ammonium root from electrolytic manganese slag. Background technique [0002] Electrolytic manganese is the second largest industry in the field of ferrous metallurgy in my country. According to the current grade of manganese carbonate ore, 6-10 tons of manganese slag are discharged for every ton of electrolytic metal manganese produced. The stock of manganese slag in my country has reached more than 50 million tons, and at the same time, more than 10 million tons of manganese slag are added every year. Manganese slag contains a variety of valuable components, and the realization of its "turning waste into treasure" can fundamentally solve the pressure and pollution brought by waste to the environment, which is of great significance to the sustainable and healthy development of my country's electrolytic manganese industry and environmental protection. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01C1/24
Inventor 陈文兴田娟万军王勇周昌平杨杰
Owner GUIZHOU RES INST OF CHEM IND
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