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In order to i mprove the thermal properties of coke ,an industrial experi ment on the coke spraying withZBS additive solution was carried out at coking plant and No·6 blast furnace (2 000 m3) of Kunming Iron and SteelCo Ltd . The coke reactionindex (CRI) of the coke spraying with ZBS additive solution decreases by 10·56 %,andthe coke strength after reaction (CSR) increases by 7·80 %in comparison withthose of the un-sprayed coke .Dur-ing the experi ment ,the average iron output increases by 66·69 t/d ,and the coke rate is reduced by 5·21 kg pertoniron, while the fluctuation of furnace temperture is small ,and sulphur content in hot metal and 100 %of hotmetal are acceptable .
In order to i mprove the thermal properties of coke, an industrial experiment on the coke spraying with ZBS additive solution was carried out at coking plant and No.6 blast furnace (2 000 m3) of Kunming Iron and SteelCo Ltd. The coke reaction index CRI) of the coke spraying with ZBS additive solution decreases by 10.56%, and the coke strength after reaction (CSR) increases by 7.80% in comparison withthose of the un-sprayed coke. Dur-ing the experi ment, the average iron output increases by 66 · 69 t / d, and the coke rate is reduced by 5 · 21 kg pertoniron, while the fluctuation of furnace temperture is small, and sulphur content in hot metal and 100% of hotmetal are acceptable.