Recovery and comprehensive-utilization process for waste heat in dry-process treatment of iron-making slag in blast furnace
A technology of blast furnace ironmaking and waste heat recovery, which is applied in the field of steelmaking technology, can solve the problems of serious resource loss, comprehensive utilization limitation, and large process area, and achieve the effect of improving economic benefits and maximizing the use of resource benefits
Inactive Publication Date: 2017-11-28
王宏伟
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Abstract
The invention provides a recovery and comprehensive-utilization process for waste heat in dry-process treatment of iron-making slag in a blast furnace. The recovery and comprehensive-utilization process comprises the following steps: (S1) the blast-furnace slag enters a buffering tank through a slag drying trough, the heat of the slag is recovered by hot air in the buffering tank, and then the temperature of the slag is reduced; (S2) flue gas carrying the heat of the slag enters a waste-heat boiler through a pipeline, water steam is heated by heat exchange in the waste-heat boiler, and enters power generation equipment to be converted into electric energy; (S3) after heat exchange, the flue gas enters a dust remover for dust removal, and after dust removal, the flue gas enters a blow-off tower for exhaustion by a fan; and (S4) after temperature reduction, the slag enters a brick casting chain belt for casting and molding, and then enters a cold bed for package and storage. The recovery and comprehensive-utilization process provided by the invention has the advantages of safety, reliability, stability and benefit, and can create economic benefit while realizing recovery of the waste heat of the slag.
Application Domain
Increasing energy efficiencyRecycling and recovery technologies +1
Technology Topic
SlagElectric energy +9
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