Gravel has numbers of source and names. Nature gravel is Large called conglomerate, they are a common geological feature, being formed as a result of the weathering and erosion of rocks. While natural gravel deposits are insufficient for human purposes, gravel is often produced by quarrying and crushing hard-wearing rocks, such as sandstone, limestone, dolomite or basalt. Gravel ultrafine grinding line Our gravel grinding mills include Raymond mill, HGM ultrafine grinding mill (HGM80/ HGM90/ HGM100/ HGM100/HGM125). Raymond mill is the vertical grinding mill, which is popular in many countries and has very long history. HGM ultrafine grinding mill is special for super thin grinding. You can choose suitable gravel grinding mill depends on your gravel size, hardness, capacity and your cost budget. Gravel ultrafine grinding line: Clirik has the best gravel ultrafine grinding line. Under the same finished final size and the same motor power, the capacity of micro powder grinding mill is twice as much as jet mill, mixing grinder and ball mill. And the application of pulse deduster and muffler greatly alleviates dust pollution and noise. If you want to reduce the cost of production you can choose our gravel ultrafine grinding mill. Raw gravel first enters jaw crusher to be crushed to smaller size. They are lift to storage room by elevator. Vibrating feeder will feed materials into grinding chamber evenly and gradually. After being grinded, the quartz powder will be blow to cyclone by blower. Then the gravel powder will be transferred to storage room through pipes, and then will be discharged as final products.