Treatment system for blast-furnace slag

Abstract

The invention discloses a disposing system of blast furnace, which comprises the following parts: blast furnace slag water quenching and transmitting device, slag sediment pool, flushing cinder circulating device, slag-water separating and conveying device, wherein the slag sediment pool is composed of effluent pond, clean water pond, overflow channel, secondary filter slag pond and filter grid, which interconnect sequently; the overflow channel, secondary filter pond and clean water pond parallel; the overflow channel is shallower than effluent pond, clean water pond and secondary filter pond.

Description

technical field [0001] The invention relates to a slag processing system produced by blast furnace smelting and belongs to the technical field of blast furnace ironmaking. Background technique [0002] The slag produced by blast furnace smelting can be widely used to make slag cement, heat insulation materials and other building materials after treatment. The blast furnace slag treatment processes adopted by most iron and steel enterprises today include drum dehydration method (Inba method and Tula method), slag pool filtration method (bottom filter method), dewatering tank type (Lhasa method), lifting dehydration type ( Stirring cage method and HK method), Jiaheng method, etc., these processes have their own characteristics, but more or less have their own shortcomings. For example, the Inba method uses a large drum to dehydrate water slag to achieve slag-water separation. This method has good treatment effect, high degree of mechanization and automation, and a good workin...

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Problems solved by technology

For example, the Inba method uses a large drum to dehydrate water slag to achieve slag-water separation. This method has good treatment effect, high degree of mechanization and automation, and a good working environment in front of the furnace. However, due to complex equipment, large investment, and high operating costs, Usually suitable for new large blast furnaces

Bottom filtration method or sedimentation tank method has simple equipment and is relatively easy to operate and maintain. It is a commonly used slag treatment method for small and medium-sized blast furnaces. Pollution, and due to the large amount of slag in the circulating water, the pipeline water pump is seriously worn

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