Research on relationship of coal specific magnetization ratio varied with coal ash content

The high gradient magnetic separation of fine coal is an economic,high efficient and less polluted desulphurization technology.A understanding of the coal magnetism is the base to improve the magnetic separation efficiency.The vibration sample magnetic meter VSM was applied to measure the magnetized rate of the two different density coal from Yanzhou Coal Mining Group and Luoyang.The paper studied the relationship between the coal magnetism and the coal ash content.The study showed that With the ash content increased,the coal magnetized rate would be steadily increased.The converse magnetism of coal would be became the paramagnetism of coal due to the ash mineral and the density and magnetized rate of the coal.There was a certain function relationship met by the coal magnetized rate and the coal ash content.