Abstract
The main cause of deficiencies in a cupola operation followed by the use of low grade coke has been consumed as the reducing action of coke for CO2 of furnace gas to CO.
To prevent this undesirable action of low grade coke, the coating of coke with the calcium carbide slime was taken in the present study. 1/2t cupola was operated by those coated coke. The effect of the coating on the reducing action of coke was investigated.
Results obtained were summarized as follows:
(1) The coating of coke with calcium-carbide slime shows a decreasing of the reducing action for CO2 to CO.
(2) The temperature of molten metal is rised 20-50°C by the coated coke.
(3) CO2% in the furnace gas taken at the top of cupola and the amount of coke consumption are lowered.
