... between the roller and ring grated to get crushed, fans blow it into the grinding room, blowing powder into the analysis machine, sorting ... under negative pressure.technicalModel8021Power50kwFeeding size1-5mmProduct fineness500-8000meshDealing capacity800kgYield95% ultrafine grinding machine mining machine used in calcite, diatomite, barite, gypsum, alunite, graphite, phosphate ...