... sinter, slag, iron oxide powder, coal, manganese dioxide, alumina powder, the oxidation of lead, aluminum, titanium, iron alloy, non alloy additive ... clay, silica, sand, polishing materials, plaster, aluminum oxide powder. In the food and food industry: flour, soybean, peanut ... sugar, vitamin supplements. In the plastic industry: plastic powder, plastic granules, grinding the chip materials. In the ...