Sludge steel slag ultra light ceramsite and method for preparing same
A technology of ultra-light pottery and steel slag, applied in the field of environmental science, to achieve the effects of sustainable economic development, low water absorption, and large specific surface area
Inactive Publication Date: 2011-09-28
SHANDONG UNIV
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Abstract
The invention relates to a sludge steel slag ultra light ceramsite and a method for preparing the same. The ultra light ceramsite comprises the following raw material components by weight portion: 10 to 35 portions of dewatered sludge, 10 to 25 portions of revolving furnace steel slag, and 30 to 80 portions of clay. The method comprises the following steps that: the dewatered sludge, revolving furnace steel slag and clay which are dried and crushed are weighed up according to the proportion and mixed with water; and the mixture is stirred to prepare a raw meal ball, and the raw meal ball is dried at the normal temperature and then sintered in a resistance furnace. The method and the ceramsite have the advantages that: the process is simple; the prepared ceramsite is a spherical solid withdeep brown or black brown rough surface; the bulk density is 400 to 500 kg/m<3>, and the grain density is 760 to 925 kg/m<3>; the ceramsite can float in water; the water absorption rate is 4.0 to 6.0percent, and the expansion rate is 17 to 30 percent; moreover, the ceramsite also has the characteristics of light weight, high strength, small water absorption rate, big specific surface area, and the like.
Application Domain
Claywares
Technology Topic
SlagAbsorption rate +9
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PUM
Property | Measurement | Unit |
Bulk density | 421.0 | kg/m³ |
Density | 760.0 | kg/m³ |
Sintering temperature | 1150.0 | °C |
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