Technical Improvement of Coking Dust Removal Ash Adding Process Through Coal Injection of Blast Furnace
The coking dust removal ash was added into the 1880 m3 blast furnace of Iron-aking Plant of Laiwu Iron and Steel Co.,Ltd.through coal injection system,which was originally designed to use belt to blend coking dust removal ash into raw coal.However,due to the long process line,it not only caused abnormal wear of equipment,but also caused secondary dust flying,which has great environmental risk.This paper mainly discusses the technical improvement of coking dust removal ash adding process through coal injection system of blast furnace.Using pneumatic conveying mode to add coking dust removal ash not only avoids the environmental risk of secondary dust flying,but also reduces the equipment wear of medium-speed mill and reduces the process energy consumption of ineffective processing.
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