Blast furnace smelting on what coke quality requirements

The role of coke in the blast furnace includes: (1) material column skeleton; (2) reduction; (3) heat generation; (4) carburization.

Therefore, the quality requirements for coke are:

(1) Strength requirements: Cold and hot strength indicators (M40, M10, CRI, CSR) are good; uniform and suitable particle size, less powder.

(2) Composition requirements: high fixed carbon content, low ash content, low moisture content, low volatile content, high calorific value, low K, Na, Zn content, low S, P content, low content of harmful impurity elements.