Abstract A high-sulphur-containing coking coal was mixed with alkaline material in order to"fix" its certain amount of sulphur after coking, such coke has been called the "fixing-sulphur" coke. This and another "high-sulphur" coke made from same coal were sepa-rately used in ironmaking under similar conditions for comparison. It was found thatthe "fixing-sulphur" coke showed better properties in ironmaking than the high-sulphurcoke in terms of all technological and economical indices. With "fixing-sulphur" coke,the contamination of sulphur was much less serious, 90％ of pig iron to be casting pro-duced up to the recognized standard. Samples of coke, ore, flux, molten iron and slag were taken from different positionsof blast furnace for sulphur analysis, a diagram of sulphur variation along longitudinaldirection of blast furnace was plotted. Such a diagram may help to control blast furnaceoperation from the point of view of sulphur elimination, although much further investi-gation will be needed in this direction.
