Blast furnace dust high-efficient separation and purification system and purification method

Abstract

The invention relates to the technical field of comprehensive utilization of blast furnace dust, in particular to a blast furnace dust high-efficient separation and purification system and a purification method. The blast furnace dust high-efficient separation and purification system is characterized in that the system is composed of a pulp making mechanism, a primary pulp homogenizing and conveying mechanism, a zinc extracting mechanism, a secondary pulp homogenizing and conveying mechanism, an iron-carbon extracting carbon mechanism and a conveying pipe, wherein the pulp making mechanism iscomposed of a ball mill or a stirring barrel, the primary homogenizing and conveying mechanism is composed of a homogenizing box and a primary conveying pump, the zinc extracting mechanism is composedof a hydrocyclone and a zinc guide pipe, the hydrocyclone is provided with a feeding port, an overflow port and a bottom flow port, the secondary homogenizing and conveying mechanism is composed of abottom flow box and a secondary conveying pump, a feeding port and a discharging port are formed in the bottom flow box, the iron-carbon extracting mechanism is composed of a spiral separation machine, a iron guide pipe and a carbon guide pipe, and the spiral separation machine is provided with a feeding port, an iron outlet and a carbon outlet. The blast furnace dust high-efficient separation and purification system and the purification method have the advantages of being simple in structure, convenient to use, pollution-free, low in cost, and good in separation and purification effects.

Description

technical field [0001] The invention relates to the technical field of blast furnace ash comprehensive utilization, in particular to a high-efficiency blast furnace ash sorting and purifying system and a purifying method with simple structure, convenient use, no pollution, low cost and good sorting and purifying effect. Background technique [0002] As we all know, blast furnace ash is mainly composed of carbon and metal oxides such as zinc and iron. It is a light, fine-grained substance and is one of the main solid emissions from iron and steel enterprises. With the rapid development of China's iron and steel industry, iron and steel production has increased year by year , the output of blast furnace ash is also increasing. If comprehensive utilization is not implemented, it will not only pollute the environment, but also cause a waste of resources. [0003] In recent years, scholars at home and abroad have done a lot of research on the comprehensive utilization of blast fu...

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Problems solved by technology

[0002] As we all know, blast furnace ash is mainly composed of carbon and metal oxides such as zinc and iron. It is a light, fine-grained substance and is one of the main solid emissions from iron and steel enterprises. With the rapid development of China's iron and steel industry, iron and steel production has increased year by year , the output of blast furnace ash is also increasing. If comprehensive utilization is not implemented, it will not only pollute the environment, but also cause a waste of resources

[0003] In recent years, scholars at home and abroad have done a lot of research on the comprehensive utilization of blast furnace ash, such as using blast furnace ash directly as sintering ingredients, using rotary kiln reduction fuming method to recover zinc, using magnetic separation and flotation to recover iron and carbon, etc., but These treatment methods have disadvantages such as single function, complicated process, or need to add drugs, and have not achieved the purpose of environmental protection and effective comprehensive utilization.

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