... patch and scattered material such as cement, dust coal, food, fertilizer, inder, sand. The temperature must be less than 200°C ... :plastic, Abradant material, chemical industry, pharmacy, building materials, food, carbon, fertilizer. The model and tech parameter :model10016020025031510050063080010001250Spiral diameter10016020025031510050063080010001250Screw-pitch100160200250315355400450500560630 n (r ...