LINE OF OBTAINING SPHEROPLASTICS (OPTIONS) Russian patent published in 2018 - IPC B29C70/66 

FIELD: technological processes.

SUBSTANCE: invention relates to production of silica gel. Improving the quality of the received spheroplastics while ensuring the continuity of the production line of this composite material is achieved due to the fact that the microsphere supply line comprises a container for the microspheres and a dispenser associated with the supply hoppers that are connected to the vacuum pump receiver. Dosing pumps are installed on the binder line and the hardener line. Mixing devices of the binder line and the hardener line are made in the form of twin-screw mixers, in which the distance between the maximum diameter of one screw and the minimum diameter of another screw is not less than three diameters of microspheres. Distance between the augers and the body is not less than three diameters of the microspheres. In one embodiment, each mixer comprises auger zones alternating with the roller zones. Each pair of mixer screws has a different pitch, with decreasing it towards the exit screws. Rotor of the mixing head is provided with radial rows of plates which alternate with the radial rows of the stator plates of the mixing head.

EFFECT: higher quality of produced spheroplastics.

4 cl, 5 dwg