Reformation Scheme of Coal Separation System of Coal Preparation Plant of Huoerxinhe

The paper introduced coal separation process of coal preparation plant of Huoerxinhe, found out rising cause of clean coal ash separated by spiral separator through analysis and test. Coal separation system was reformed by adding a tee at pipeline and setting gate valve. The clean coal ash before and after reformation was 11.71% and 8.67% with interceptor of spiral separator in the same position, showing that the clean coal ash significantly reduced.