Alkaline residue porcelain granule having package structure and manufacturing method thereof

Abstract

The invention discloses an alkaline residue porcelain granule which has a compound package structure. The alkaline residue porcelain granule comprises a porous core layer (2) and a shell layer having blind holes (1), wherein the porous core layer comprises alkaline residue, glass powder, coal ash and saw dust and the shell layer having blind holes comprises glass powder, clay and saw dust. A method for manufacturing the alkaline residue porcelain granule comprises the steps of: uniformly mixing the materials of the porous core layer and the shell layer having blind holes by a blender, adding water into the dry materials of the porous core layer to pelletize in a pelletizing pan in order to form the pellets of the core layer, placing the pellets into a balling pan which is filled with the dry materials of the shell layer, starting the balling pan, shaking for a sufficient time, packing the materials of the shell on the core layer by rolling in order to form the porcelain granule green-pressing having the package structure, drying the porcelain granule green-pressing at 105 DEG C, pre-burning the dried porcelain granule green-pressing, rising temperature and roasting, and then naturally cooling so as to finish the firing of the alkaline residue porcelain granule. The alkaline residue porcelain granule can efficiently prevent the chloride ion in the alkaline residue from dissociating and improve the application performance of the porcelain granule which uses the alkaline residue as raw materials in the concrete.

Description

technical field

[0001] The invention belongs to the field of building materials, and relates to alkali slag ceramsite with wrapped structure and a manufacturing method thereof. Background technique

[0002] Alkali slag is a kind of waste slag discharged from ammonia-soda soda ash enterprises. Because of its high water content and a large amount of chloride, it has become a solid waste that is difficult to handle. For a long time, the alkali slag discharged from the alkali factory has occupied a large amount of cultivated land. It has caused great pollution to the environment. The comprehensive management of alkali slag has become a major scientific research topic in today's society. In the current situation of increasingly scarce natural resources, the research on using alkali slag to make building materials has become a hot spot. As a construction engineering material, alkali slag has been studied mainly in engineering soil and other aspects, and has been applied in engin...

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