Classification of cast coke
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In China’s current foundry industry, there are varying requirements regarding the quality of casting coke; as a result, different coke manufacturers adopt distinct production methods in the casting coke market, leading to the availability of various types of casting coke for sale! Specifically, there are shaped coke made from coke powder as the main raw material, shaped coke derived from anthracite as the main raw material, foundry coke substituted for large-sized metallurgical coke produced in conventional blast furnaces, large-sized coke produced by QRD heat-recovery furnaces from metallurgical coke and then used as foundry coke, as well as a small amount of foundry coke produced specifically using QRD furnaces, and so on (please add any other methods if available). Therefore, I would like to ask experts in the field of foundry coke about the differences in their performance when these various production methods yield products with similar physical and chemical properties. . . . . . . . (Physical and chemical properties are similar, but market prices differ greatly!) ? ? ）
The main advantages are low cost, though the performance is not very satisfactory. For metallurgical coke, it is better to use large QRD furnaces rather than conventional coke ovens; the exact reason for this is unclear. In terms of performance when the furnace is cold, QRD furnaces outperform conventional ones, and this may be related to the coking time. QRD furnaces designed specifically for producing casting coke yield the most significant improvements, with a marked reduction in the ratio of coke to iron. I would appreciate any guidance on the principles involved in coal blending and coking time!