Ecological cement clinker produced by utilizing sludge
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An ecological cement and sludge technology, applied in the field of ecological cement clinker and cement clinker, to achieve the effect of long residence time, high dust removal efficiency and strong thermal stability
Inactive Publication Date: 2016-03-16
赖清甜
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[0005] China invented "Method of Making Cement Clinker from Sludge", application number 201410278336.4, which discloses a method of making cement clinker from sludge, which is prepared by mixing and roasting sludge, silica fume slag, and zeolite , but the method of adding dry sludge to raw meal to prepare cement clinker has not been reported
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Embodiment 1
[0022] An ecological cement clinker produced from sludge is made of the following components by weight: 35 parts of raw meal, 38 parts of limestone, 9 parts of iron ore, 3 parts of fly ash, 4 parts of sand shale, sewage Mud 26 parts.
[0023] Dry various raw materials at 105°C, finely grind them with a ball mill to pass 200 mesh, and then bake them in an oven at 105°C for 24 hours, then calcinate them into cement clinker, take them out after holding at 1450°C for 50 minutes, and cool and crush them. cement clinker.
Embodiment 2
[0025] An ecological cement clinker produced from sludge is made of the following components by weight: 80 parts of raw meal, 85 parts of limestone, 15 parts of iron ore, 8 parts of fly ash, 10 parts of sand shale, sewage Mud 46 parts.
[0026] Dry various raw materials at 105°C, finely grind them with a ball mill to pass 200 mesh, and then bake them in an oven at 105°C for 24 hours, then calcinate them into cement clinker, take them out after holding at 1450°C for 50 minutes, and cool and crush them. cement clinker.
Embodiment 3
[0028] An ecological cement clinker produced from sludge is made of the following components by weight: 60 parts of raw meal, 65 parts of limestone, 12 parts of iron ore, 6 parts of fly ash, 7 parts of sand shale, sewage 36 parts of mud.
[0029] Dry various raw materials at 105°C, finely grind them with a ball mill to pass 200 mesh, and then bake them in an oven at 105°C for 24 hours, then calcinate them into cement clinker, take them out after holding at 1450°C for 50 minutes, and cool and crush them. cement clinker.
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Abstract
The invention relates to an ecological cement clinker produced by utilizing sludge, and belongs to the technical field of building materials. The ecological cement clinker is prepared from the following components in parts by weight: 35-80 parts of raw materials, 38-85 parts of limestone, 9-15 parts of iron ore, 3-8 parts of fly ash, 4-10 parts of sandy shale and 26-46 parts of sludge, and is prepared by the following steps: stoving the raw materials at 105 DEG C, finely grinding the raw materials with a ball mill till the raw materials can pass through a 200-mesh sieve, then stoving in an oven at 105 DEG C for 24 h, calcining into cement clinker, conducting heat preservation at 1450 DEG C for 50 min, taking out, and conducting cooling crushing so as to obtain the ecological cement clinker. The production cost of the cement can be reduced, thorough and harmless treatment of the sludge can be realized, and important functions are played for resource optimal configuration, environmental protection and social sustainable development.
Description
technical field [0001] The invention relates to a cement clinker, in particular to an ecological cement clinker produced by using sludge, and belongs to the technical field of building materials. Background technique [0002] Municipal sludge is an inevitable product of sewage treatment in sewage treatment plants, and the treatment and disposal of this waste is an unavoidable problem after sewage treatment. With the continuous improvement of sewage treatment rate, the number of sewage treatment plants has doubled, and the output of urban sludge has also increased sharply. The contradiction of urban sludge disposal has become increasingly prominent. According to statistics, in 1990, the sewage treatment plants built in my country The daily sewage treatment capacity is more than 3.5 million tons, the discharge of dry sludge is 200,000 tons, and the wet sludge is about 5 million tons (water content 96%). The sludge output in 2000 will be 7 to 10 times that of the early 1990s. In...
Claims
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Application Information
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