ａ．利用锤式破碎机对煤矸石原料进行破碎，然后用滚筒筛进行颗粒筛分处理，使得到的原料颗粒大小在２ｍｍ以下，其中２ｍｍ－５０μｍ的占２５％，５０μｍ－５μｍ的占５５％，小于５μｍ的占２０％，然后所得原料经搅拌机加水搅拌；ｂ．把搅拌好的原料输入陈化库陈化；ｃ．经陈化完的原料输入真空挤出机挤出成型；ｄ．把成型得到的坯体码放入干燥窑中干燥；ｅ．将干燥好的坯体放入焙烧窑中焙烧。本发明由于采用高细破碎和陈化技术，提高坯料塑性；制坯采用高压真空挤出成型，提高砖坯密实度，优化空心砖的孔型和孔洞排布，进一步提高孔洞率，降低了砖内部传热，提高了砖的保温性能。
A. Hammer crusher is used to crush coal gangue raw materials, and then roller sieve is used to screen the particles, so that the size of raw materials is less than 2 mm, of which 25% are 2 mm-50 micron, 55% are 50 micron-5 micron and 20% are less than 5 micron. Then the raw materials are stirred. Mixing machine with water; B. Input the stirred raw materials into the aging warehouse for aging; C. Input the aged raw materials into the vacuum extruder for extrusion; D. Put the formed green body codes into the drying kiln for drying; E. Roast the dried green body in the roasting kiln. The invention adopts high-fineness crushing and aging technology to improve the plasticity of the billet, adopts high-pressure vacuum extrusion forming to improve the compactness of the billet, optimizes the hole pattern and arrangement of the hollow brick, further improves the hole rate, reduces the heat transfer inside the brick, and improves the thermal insulation performance of the brick.