Prepare 15kg raw materials,5kg sand(The sand is lesser than pore diameter of the mold),3kg machine oil, ingredient and Washing mold must be fit for the machine, and put them in hopper. Start machine and repeat extrusion half an hour, the flat die can be slicked and all holes of the die can work well. If they don’t work completely, you can repeat extrusion.Then put in raw materials,Keep the moisture between 12%-15% and input equably,Then produce pellets.