Natural Graphite Recarburizer Type：
Natural graphite recarburizer is divided into two types: Flake graphite and Amorphous graphite.
Amorphous graphite with high ash content, rarely be used for iron carburizing agent.
High carbon flake graphite required chemical extraction, or heated to a high temperature to make the oxide decompositon and volatile, this flake graphite is low capacity and high price, so rarely be used as carburant, main recarburizer is medium graphite.
