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Industrial solid waste electrolytic manganese residue mineralization CO2 resource utilization method

A technology for electrolytic manganese slag and industrial solid waste, applied in chemical instruments and methods, agriculture, applications, etc., can solve the problems of low comprehensive recovery rate of electrolytic manganese slag, poor comprehensive utilization effect, neglect of comprehensive utilization, etc., and achieve high additional value utilization, increase resource utilization, and improve the effect of comprehensive utilization

Active Publication Date: 2022-07-29
CHINA CITY ENVIRONMENT PROTECTION ENGINEERING LIMITED COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most of the recycling of electrolytic manganese slag only focuses on the recovery of metal manganese, ignoring the comprehensive utilization of other resources in electrolytic manganese slag. There are problems such as low comprehensive recovery rate of electrolytic manganese slag, poor comprehensive utilization effect, and waste of resources.

Method used

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  • Industrial solid waste electrolytic manganese residue mineralization CO2 resource utilization method
  • Industrial solid waste electrolytic manganese residue mineralization CO2 resource utilization method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] An industrial solid waste electrolytic manganese slag mineralization CO 2 The method for resource utilization includes the following steps:

[0037] Step 1: The electrolytic manganese slag and the carbide slag are formed into a mixture according to the mass ratio of 100:15, and placed in the first container, and water is added to the first container according to the mass ratio of the mixture to the water of 1:2, at a rate of 100r / min. Speed ​​stirring for 6 hours to obtain ammonia gas and slurry; wherein, the gypsum content of the electrolytic manganese slag is 60 wt %, and the ammonia nitrogen content is 8 wt %.

[0038] Step 2: Pass the ammonia gas into the second container containing water, and then pass the CO containing gas to the second container 2 The blast furnace gas obtained is obtained to obtain ammonium carbonate solution; the solid-liquid separation of the slurry is to obtain modified electrolytic manganese slag;

[0039] Step 3: mixing the ammonium carbo...

Embodiment 2

[0043] An industrial solid waste electrolytic manganese slag mineralization CO 2 The method for resource utilization includes the following steps:

[0044] Step 1: The electrolytic manganese slag, carbide slag and red mud are formed into a mixture according to the mass ratio of 100:20, and placed in the first container, and water is added to the first container according to the mass ratio of the mixture to water 1:3, at 150r The gypsum content of the electrolytic manganese slag is 65 wt %, and the ammonia nitrogen content is 12 wt %.

[0045] Step 2: Pass the ammonia gas into the second container containing water, and then pass the CO containing gas to the second container 2 The coke oven gas obtained is obtained to obtain ammonium carbonate solution; the solid-liquid separation of the slurry is to obtain modified electrolytic manganese slag;

[0046] Step 3: mixing the ammonium carbonate solution with electrolytic manganese slag, wherein the nitrogen-sulfur ratio of ammoniu...

Embodiment 3

[0050] An industrial solid waste electrolytic manganese slag mineralization CO 2 The method for resource utilization includes the following steps:

[0051] Step 1: The electrolytic manganese slag, carbide slag and fly ash are formed into a mixture according to the mass ratio of 100:30, and placed in the first container, and water is added to the first container according to the mass ratio of the mixture to water 1:4. The gypsum content of the electrolytic manganese slag is 55 wt %, and the ammonia nitrogen content is 10 wt %.

[0052] Step 2: Pass the ammonia gas into the second container containing water, and then pass the CO containing gas to the second container 2 The lime kiln gas obtained is obtained to obtain ammonium carbonate solution; the solid-liquid separation of the slurry is to obtain modified electrolytic manganese slag;

[0053] Step 3: mixing the ammonium carbonate solution with electrolytic manganese slag, wherein the nitrogen-sulfur ratio of ammonium carbon...

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Abstract

The invention provides an industrial solid waste electrolytic manganese residue mineralization CO2 resource utilization method, which comprises: placing a mixture of electrolytic manganese residue and alkaline waste residue in a first container, adding water, and stirring to obtain ammonia gas and slurry; secondly, introducing ammonia gas into a second container filled with water, and introducing industrial tail gas containing CO2 into the second container to obtain an ammonium carbonate solution; carrying out solid-liquid separation on the slurry to obtain modified manganese slag; thirdly, mixing the ammonium carbonate solution with the electrolytic manganese residues to prepare calcium carbonate and ammonium sulfate; carrying out filter pressing on the modified manganese slag to obtain a modified manganese slag cake and alkaline wastewater; finally, introducing the alkaline wastewater into a first container; and drying and grinding the modified manganese slag cake to obtain the basic sulfate composite exciting agent. According to the method, efficient and gradient utilization of the electrolytic manganese residues is achieved, high-added-value utilization of the electrolytic manganese residues is achieved, the mineralized CO2 treatment cost is reduced, and the method has good application prospects and popularization value and has important significance in achieving carbon peak reaching and carbon neutralization.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of industrial solid waste, and in particular relates to an industrial solid waste electrolytic manganese slag mineralized CO 2 method of resource utilization. Background technique [0002] Manganese metal is called "strategic metal" and is an extremely important industrial raw material. It is one of the basic raw materials for national pillar industries such as aerospace, machinery, chemical industry and agriculture. With the rapid development of industry, the demand for metal manganese is increasing day by day. At present, the smelting method of metal manganese in my country is mainly through the wet electrolysis process. Every ton of electrolytic metal manganese produced produces 9 to 11 tons of electrolytic manganese slag, and the stockpile is as high as 120 million tons, and the cumulative stockpile is constantly increasing. [0003] Electrolytic manganese slag is an acidic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F11/18C01C1/244C05C3/00C04B22/06C04B12/00
CPCC01F11/18C01C1/244C05C3/00C04B40/0039C04B12/005C04B18/144C04B18/0427C04B22/06C04B22/0046C04B18/0409C04B18/08
Inventor 姜明明邵雁郭华军许晓明刘子豪向浩胡国峰蒋庆肯熊劲杨振刘颖覃慧
Owner CHINA CITY ENVIRONMENT PROTECTION ENGINEERING LIMITED COMPANY
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