Method for firing light ceramsite by utilizing domestic sludge and shield muck

Abstract

The invention discloses a method for firing light ceramsite by using domestic sludge and shield muck, which solves the problem of environmental pollution caused by spoil such as domestic sludge and shield muck, and the prepared product is green and environment-friendly and has high added value. The production process comprises the following steps: 1, pretreating the domestic sludge and the shield muck; 2, drying the pretreated domestic sludge and shield muck; 3, mixing and preparing the dried domestic sludge, the shield muck and the additive; 4, extruding the mixed material into a blank; and 5, sintering the ceramsite blank in a kiln. According to the invention, domestic sludge and shield muck are used as main raw materials for firing the lightweight ceramsite. The environment pollution caused by the domestic sludge and the shield muck is solved, full utilization of resources is achieved, clay needed by traditional ceramsite preparation is replaced, land resources are effectively protected, and meanwhile the preparation cost is reduced. The fired light ceramsite has the characteristics of low water absorption, low density, high strength, good heat insulation effect and the like.

Description

technical field [0001] The invention relates to a firing method of lightweight ceramsite. Background technique [0002] According to estimates, the construction of a subway station produces as much as 87,000 cubic meters of earthwork, and the construction of a subway tunnel with a length of 1 kilometer and a diameter of 6 meters produces about 68,000 cubic meters. From the perspective of the overall situation in the country, centralized stacking, supplemented by recycling, is currently the main treatment method for construction waste. If the shield muck is piled up in large quantities or buried in mines, it will pose potential geological hazards and pollute water resources. Another raw material for firing lightweight ceramsite is domestic sludge. The traditional treatment methods of domestic sludge are landfill and composting. In addition, there is another method of incineration. Although the incineration method has many advantages, it also has many problems. It causes env...

AI Technical Summary

Problems solved by technology

If the shield muck is directly piled up in large quantities or buried in mines, there will be potential geological hazards and pollute water resources

Another raw material for firing lightweight ceramsite is domestic sludge. The traditional treatment methods of domestic sludge are landfill and composting. In addition, there is another method of incineration. Although the incineration method has many advantages, it also has many problems. pollute the environment and waste resources