METHOD FOR RECOVERING GRAPHITE FROM BY-PRODUCT OF IN PRE-TREATING PROCESS MOLTEN PIG-IRON

摘要

PURPOSE: A method for collecting graphite from byproducts of a molten pig-iron pre-treating process is provided to apply pure graphite to high-grade refractory or high-grade carbon materials by efficiently collecting the graphite and recycling the byproducts. CONSTITUTION: A method for collecting graphite from byproducts of a molten pig-iron pre-treating process includes the following: Byproducts(M) of a molten pig-iron pre-treating process are separated into slag and kish graphite. Pure graphite is collected from the separated kish graphite. A method for separating the kish graphite from the byproducts includes the following: The byproducts are introduced into a crucible(11). The kish graphite is precipitated on the surface of the slag. The precipitated kish graphite is cooled to become solid phase. The cooled kish graphite is ground. The kish graphite is separated from the slag based on the difference of specific gravities.