A heating furnace is a device that heats a material or workpiece (usually a metal) to a rolling forging temperature.

Rotary furnace is a thermal equipment for calcining, roasting or drying granular and powdery materials.

The main raw materials for the production of Portland cement are lime raw materials and clay raw materials, and sometimes according to the fuel quality and cement varieties to add correction raw materials to supplement the lack of certain components.

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