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A platform for research: civil engineering, architecture and urbanism
Oilfield sewage treatment plant dehydrated sludge baking-free brick and preparation method thereof
The invention relates to a baking-free brick with oilfield sewage treatment plant dehydrated sludge as a raw material, and a preparation method thereof. According to the invention, a pollutant is fixed in a cured body with a relatively high strength, such that the dehydrated sludge is prevented from polluting the environment. The technical scheme of the invention is that: the baking-free brick is prepared from the raw materials of, by mass, 25-40% of dehydrated sludge, 5-10% of an alkaline activator, 5-10% of cement, 15-25% of river sand, 5-10% of clay, and 30-45% of gravel. The preparation method comprises the following steps: dehydrated sludge and slaked lime powder are added into a container according to the mass percentages of the raw materials, and are well mixed; the mixture is allowed to stand and is cured for 5-8h, such that cured dehydrated sludge is obtained; cement, river sand, clay and gravel are added into the container; the mixture is well mixed by stirring, such that a mixed material is obtained; the mixed material is subjected to extrusion molding with a brick press, and the extruded material is cut into standard bricks; and open-air curing is carried out, such that baking-free brick products are obtained. Baking is not needed during the entire brick making process. The method is environment-friendly and energy-saving. The product accords with national quality standards.
Oilfield sewage treatment plant dehydrated sludge baking-free brick and preparation method thereof
The invention relates to a baking-free brick with oilfield sewage treatment plant dehydrated sludge as a raw material, and a preparation method thereof. According to the invention, a pollutant is fixed in a cured body with a relatively high strength, such that the dehydrated sludge is prevented from polluting the environment. The technical scheme of the invention is that: the baking-free brick is prepared from the raw materials of, by mass, 25-40% of dehydrated sludge, 5-10% of an alkaline activator, 5-10% of cement, 15-25% of river sand, 5-10% of clay, and 30-45% of gravel. The preparation method comprises the following steps: dehydrated sludge and slaked lime powder are added into a container according to the mass percentages of the raw materials, and are well mixed; the mixture is allowed to stand and is cured for 5-8h, such that cured dehydrated sludge is obtained; cement, river sand, clay and gravel are added into the container; the mixture is well mixed by stirring, such that a mixed material is obtained; the mixed material is subjected to extrusion molding with a brick press, and the extruded material is cut into standard bricks; and open-air curing is carried out, such that baking-free brick products are obtained. Baking is not needed during the entire brick making process. The method is environment-friendly and energy-saving. The product accords with national quality standards.
Oilfield sewage treatment plant dehydrated sludge baking-free brick and preparation method thereof
LIU YUCHENG (author) / GUAN JUZHONG (author) / SUN HONGJIANG (author)
2016-01-13
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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