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Sludge-shale air brick and preparation method thereof
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A hollow brick and shale technology, applied in the field of building wall materials, can solve problems such as long time, achieve the effects of short production cycle, improve thermal insulation performance, and save land resources
Inactive Publication Date: 2018-01-09
东阳市华能新型建材有限公司
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In addition, the aging time involved in this patent is 4-5 days, which is slightly longer
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Embodiment 1
[0031]The sludge shale hollow brick is made of the following raw materials in parts by weight: 60 parts of shale, 10 parts of construction waste, 13 parts of river sludge with a water content of 70wt.%, 3 parts of sawdust, 6 parts of raw coal and 12 parts of water . Wherein, the mass fraction of each component in the shale is: SiO 2 =80%, MgO=0.1%, Al 2 o 3 =15%, Fe 2 o 3 = 2.5%, impurity = 2.4%.
[0032] The specific steps of the preparation method of the sludge shale hollow brick are as follows:
[0033] Step 1: Put 60 parts of shale, 10 parts of construction waste, 6 parts of raw coal, and 3 parts of sawdust into the apron feeder through the belt, and then transport the materials to the jaw crusher through the apron feeder for the first time Pulverize; then pass the material with a particle size of less than 150mm through an electromagnetic iron remover for iron removal and set aside.
[0034] The second step: the material obtained in the first step is sent to the in...
Embodiment 2
[0045] The difference with embodiment 1 is:
[0046] The sludge shale hollow brick is made of the following raw materials in parts by weight: 65 parts of shale, 15 parts of construction waste, 20 parts of river sludge with a water content of 80wt.%, 5 parts of sawdust, 8 parts of raw coal and 15 parts of water . Wherein, the mass fraction of each component in the shale is: SiO 2 =65%, MgO=0.3%, Al 2 o 3 =18%, Fe 2 o 3 = 4.6%, impurity = 12.1%.
[0047] The aging time is 60h.
[0048] The temperature in the firing zone is 1000° C., and the firing period is 45 hours.
Embodiment 3
[0055] The difference with embodiment 1 is:
[0056] The sludge shale hollow brick is made of the following raw materials in parts by weight: 63 parts of shale, 12 parts of construction waste, 16 parts of river sludge with a water content of 85wt.%, 4 parts of sawdust, 7 parts of raw coal and 13 parts of water . Wherein, the mass fraction of each component in the shale is: SiO 2 =50%, MgO=0.5%, Al 2 o 3 =20%, Fe 2 o 3 = 6.8%, impurity = 22.7%.
[0057] The aging time is 72h.
[0058] The temperature of the firing section is 1050° C., and the firing period is 60 hours.
[0059] Carry out relevant performance test to the finished shale hollow brick in embodiment 3, specific data is shown in table 3:
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Abstract
The invention discloses a sludge-shale air brick and a preparation method thereof. The sludge-shale air brick is prepared from raw materials in parts by weight as follows: 60-65 parts of shale, 10-15parts of construction waste, 13-20 parts of sludge, 3-5 parts of a pore-forming agent, 6-8 parts of raw coal and 12-15 parts of water. The preparation method of the sludge-shale air brick comprises steps as follows: a mixed material is prepared from the shale, the construction waste, the raw coal and the pore-forming agent, the grain size is smaller than 3 mm, and after water is added to the mixedmaterial, aging is performed for 48-72 h; the sludge is added to the aged mixed material, roasting is performed at the temperature of 950-1050 DEG C, the air brick is obtained, and the firing periodis 25-60 h. The average hole ratio, the density degree and the strength grade of the prepared air brick all meet the national standard requirements; the minimum weather resistance coefficient is 0.83and is higher than that of the national standard requirement for the shale air brick; the heat transfer coefficient is relatively low, and the air brick has good thermal insulation effect.
Description
technical field [0001] The invention relates to the technical field of building wall materials, in particular to a sludge shale hollow brick and a preparation method thereof. Background technique [0002] With the improvement of people's living standards, the continuous increase of housing area and the continuous development of production, the demand for wall materials is growing rapidly. Clay bricks, which are the main force of wall materials, are rapidly devouring our precious land resources and coal resources. The cultivated land area only accounts for 10% of the total land area, which is less than half of the world's average level. 60% of the building materials in my country are wall materials, of which clay bricks dominate, and the production of clay bricks consumes more than 1,000 soil resources every year. 10,000 cubic meters is equivalent to damaging about 500,000 mu of cultivated land. At the same time, the production of clay bricks in my country consumes more than 70...
Claims
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Application Information
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