The invention discloses a porous
sintering heat-insulating hollow block and a manufacturing process thereof. According to the porous
sintering heat-insulating hollow block, the void rate is 35 to 60 percent, the density is 700 to 1,000 kg / m<3>, and the coefficient of heat
conductivity is less than or equal to 0.22 W / m.K. The porous
sintering heat-insulating hollow block consists of the following ingredients in percentage by weight: 30 to 45 percent of
solid waste, 45 to 55 percent of inorganic binder and 5 to 15 percent of micropore pore forming agent. The manufacturing process comprises the following steps of: 1, performing grain composition; 2, sieving for grading; 3, weighing raw materials; 4, mixing, homogenizing and aging; 5, extruding for forming; 6,
cutting and stacking; 7,
drying;and 8, sintering. The porous sintering heat-insulating hollow block is reasonable in design, convenient to realize, high in
utilization rate of
solid wastes, energy-saving, environment-friendly, highin void rate, low in density, high in thermal performance and strength, stable in size and difficult to crack, can be popularized and used in large areas, and has the excellent economic and
social benefits.