Sewage sludge shale ceramsite and a preparation method thereof are provided, which relates to the
light energy-saving ceramsite of building materials and a preparation method thereof. The ceramsite of the invention consists of
sewage sludge, shale and admixtures; the method of the invention uses the
sewage sludge, the shale and the admixtures as raw materials; first, the shale is grinded into shale
powder and then the
sewage sludge, the shale and the admixtures are mixed and wedged to be granulated into round particles and then enter into a
kiln; the products are obtained after going through
drying, preheating, barking and being taken out of the
kiln for cooling. The ceramsite employs the sewage sludge discharged directly from
sewage treatment plants and the shale as major materials, which greatly saves land resource and partial shale mine resource and provides an
extremely good way for the non-hazardous and reclaiming treatment of sewage sludge; the method of the invention is simple, energy-saving and resources-saving and the density rank of the ceramsite is 300-700. The ceramsite of the invention can be widely applied in lightweight aggregate bricks, lightweight aggregate sheet materials, lightweight aggregate concrete, etc. and can also be taken as the
filter material of
sewage treatment, the water-retaining agent in cultivation, etc.