... corollary equipments are jaw crusher, elevator, feeder electrical cabinet, etc. High pressure trapezoid mill Features and benefites 1. ... , metallurgy, chemical industry, steel, building materials, coal industry and so on, and has produced great economic ... , graphite, fluorite, wollastonite, phosphate rock, calcium magnesium phosphate, coal, gangue, slag, zircon sand, talc, granite, potash feldspar, ...