Quartz sand bleaching system and bleaching process

The invention provides a quartz sand bleaching system and bleaching process, wherein the quartz sand bleaching system comprises the following modules: a raw material preparation and feeding subsystemfor quantitatively and stably supplying a mixture to a calcinator, a calcining and cooling subsystem for preheating, calcining and cooling a material model, and a flue gas treatment subsystem for treating flue gas. The quartz sand bleaching system and the bleaching process have the following advantages that (1) the quartz sand bleaching system and bleaching process do not use water, so that the waste of water resources is avoided; (2) acid and alkali are not used in the quartz sand bleaching system and bleaching process, so that possible environmental pollution is avoided; (3) the quartz sandbleaching system and bleaching process adopt a rotary kiln and a cooling machine, are suitable for large-scale continuous production, and have high production efficiency; and (4) the quartz sand bleaching system and the quartz