Preparation and processing method of biomass coke by blast furnace injection

The invention aims to provide a preparation and processing method of biomass coke by a blast furnace injection, which comprises the steps of by using common biomass as a raw material, preparing biomass coke by using a high-temperature destructive distillation method, impregnating the modified biomass coke with a Ca(NO3)2 and Fe(NO3)3 solution, drying, and processing the biomass coke into proper granularity by using a cold crushing method to replace part of anthracite. The ignition point of an injection object is obviously reduced, and the coke ratio and the pig iron smelting cost are reduced. 本发明的目的在于提供一种利用高炉喷吹生物质焦的制备及加工方法，以常见生物质为原料，采用高温干馏法制备生物质焦，并用Ca(NO3)2和Fe(NO3)3溶液浸渍改性生物质焦，干燥，采用冷态破碎的方法将生物质焦加工为合适粒度，代替部分无烟煤，显著降低喷吹物的着火点，降低焦比和生铁冶炼成本。