Said coveringagent may be lime and fluorite and said refining agent USES lime, fluorite and aluminium powder as main raw materials.
覆盖剂可以以石灰和萤石、精炼剂，也可以以石灰、萤石和铝粉为主要原料，深度脱氧可使用铝片或镁片。
2
The invention discloses bulk coal transportation dust coveringagent and the usage, which belongs to the dust preventing technology field.
本发明公开了一种散煤运输封尘剂及其使用方法，属于防尘技术领域。
3
In this paper, how to use the distillation resdues in process of primary amine synthesise organobentonite coveringagent and antistatic agent is discussed.