Mica shape beneficiation According to the shape of mica crystal and gangue, the ability to pass through the sieve slits and sieve holes in the sieve is different, and the mica and the gangue are separated. When sorting, a sieve having two or more different sieve surface structures is used, generally the first sieve mesh is strip-shaped; the second sieve mesh is square. When the ore enters the sieve surface, due to vibration or rolling action, the flaky mica and small gangue can leak from the strip sieve to the second sieve; because the second layer is sieve, the gangue can be sieved. Lower flaky mica. The shape beneficiation method has the advantages of simple process, less equipment, high productivity, good sorting effect, etc., and thus has been widely used in mica mines. Vertical Disc Injection Molding Machine The working principle of the disc Vertical Injection Molding Machine is to use the thrust of the screw (or plunger) to inject the plastic in the molten state (i.e. viscous flow state) after plasticization into the closed cavity, and then get the product after solidification. Vertical Disc Injection Molding Machine,Second Hand Vertical Injection Moulding Machine,Vertical Plastic Injection Moulding Machine,Vertical Injection Machine Ningbo Chenwei Machinery Technology Co.,Ltd , https://www.chenweimachine.com
Injection molding is a cycle process, each cycle mainly includes quantitative feeding, melt plasticity, pressure injection, mold filling cooling and mold opening. Take out the plastic part, and then close the mold for the next cycle.
Generally speaking, the molding process of the screw disk injection vertical Injection Molding Machine is as follows: first, add granular or powdered plastic into the cylinder, melt the plastic through the rotation of the screw and the heating of the outer wall of the cylinder, then close the mold, move the injection seat forward, make the nozzle close to the pouring port of the mold, and then inject pressure oil into the injection cylinder to push the screw forward, so that the high pressure can inject the melt into the closed mold with a relatively low temperature at a faster speed. After a certain period of time and pressure maintaining (also called pressure maintaining) cooling, solidify it into shape, and then open the mold to take out the product (the purpose of pressure maintaining is to prevent the melt from flowing in the mold cavity in reverse, supplement the mold cavity material, and ensure that the product has a certain density and dimensional tolerance). The basic requirements of injection molding are plasticization, injection molding and molding.