The metallurgical characters of CBCB can meet smelting reduction process. For adding coal and bonder, Fe content of CBCB is lowered and silica and alkali metal are added. CBCB's application in COSRI pilot experiments is successful. The pilot experiment has proved that COSRI process is feasible and stable in operation. The two-stage process of medium metallization rate in shaft and low PCR in final reduction vessel is accepted. The final reduction is completed in vessel with liquid slag coke fluidizing bed and the recovery of physical heat of high temperature gas is made by speedy self-reduction of CBCB.
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