The invention relates to a technique for manufacturing high-strength encaustic tiles, comprising the steps of mixing sand,
cement and water according to the proportion of 1.12-1.5:1:0.38-0.50, stirring the sand, the
cement and the water by a stirrer, injecting the mixture into a charging
barrel of a tile making
machine, extruding raw materials which are 55-125mum in particle size and are mixed uniformly by an extruding device of the tile making
machine, and extruding the raw materials onto a tile mold paved with
glass fiber; coloring propylene material, stirring the material by a small stirrer, spraying the material on the tile surface on the mold, and
polishing the surface of the mold in a blowing manner; and then putting the tile mold on a tile frame, carrying out aging treatment, then carrying out mechanical demolding and surface treatment, removing burrs at the corners and finally packaging. The screw extruding device adopted in the technique for manufacturing the high-strength encaustic tiles comprises a motor, a transmission device, a main shaft, a blanking hopper, a screw, an outer
pipe, a discharging port and a frame. The invention has the advantages that the process is simple, and the control is easy, so that the requirements for an operator are reduced; and simultaneously, the strength of products is high, the color is rich, the
rejection rate is low, the cost is low and the application range is wide.