Sintered insulating brick

The invention relates to a sintered insulating brick. The brick is prepared from, by weight, 5%-50% of construction waste soil, 5%-50% of river silt, 10%-50% of shale, 1%-30% of coal gangue, 1%-30% cinder, 1%-15% of sawdust powder and 2%-20% of sewage plant silt; the construction waste soil, the rive silt, papermaking silt, the shale, fly ash, the coal gangue and sewage treatment plant sediments are adopted as raw materials, and the specific gravity and density of finished bricks are greatly lowered. The sintered insulating brick is reasonable in design and can be popularized in a large scale. 本发明涉及种烧结保温砖，按重量百分比计，其组分及含量为：建筑废弃土5％-50％；河道淤泥5％-50％；页岩10％-50％；煤矸石1％-30％；煤渣1％-30％；锯末粉1％-15％；污水厂淤泥2％-20％，采用建筑废弃土、河道淤泥、造纸淤泥、页岩、粉煤灰、煤渣和污水处理厂沉淀物作为原料，大大降低了成品砖块的比重和密度，本发明设计合理，可大规模推广。