Kind of flint and a low density proppant manufacturing process starting from

The present invention discloses a low density proppants and preparation method as a raw material to flint. The proppant using flint raw material, less burning stones, rocks three materials easy to scrub simple compound plus a small amount of additives, by wet milling, stale, drying, granulating, drying and polishing materials firing. The present invention is dried using a hot air into the bottom material and drying, the drying process is applied inside the pulverizing device, eliminating the need for spray drying and powder machine, saving investment, clean working environment. The present invention utilizes green flint, clinker compound, their respective advantages. Using a raw material readily flint ball mill, a loss on ignition ingredients which form pores, reducing proppant density; less charred using mullite in the formed gem tailings, and the dispersed phase from the glass reinforcement; sandstone into the use of SiO2, the reaction with the alumina flint glass production raw meal phase, helps improve the bonding capacity of the mullite phase, but also facilitates flint ignition loss of pore forming closed off.