Gangue is the solid waste in the process of coal mining & washing with the main component of alumina, silicon oxide, iron oxide, calcium oxide, magnesium oxide, sodium oxide, etc. The gangue emissions occupy 10%-15% of the total coal emissions.

Titanium dioxide, molecular formula TiO2, relative molecular mass 79.90g / mol, naturally present in the anatase and rutile titanium ore in. Titanium dioxide as a white powdery solid, inert pigment, non-toxic, free from climatic conditions, has a strong covering force, is the most widely used white pigment. Titanium dioxide pigments particle size and particle size…