Cement produced by virtue of waste sintered brick powder and preparation method for cement
A brick powder and waste technology, applied in cement production and other directions, can solve the problems of resource waste, unevenness, environmental pollution of waste sintered brick powder, etc., and achieve the effect of saving resources, reducing sales prices, and reducing production costs.
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Embodiment 1
[0025] A cement produced by using waste and old fired brick powder, which consists of the following raw materials in parts by weight: 45.5 parts of Portland cement clinker, 20 parts of waste and old fired brick powder, and 3 parts of gypsum.
[0026] The preparation method of described Portland cement clinker is:
[0027] (1) Raw material preparation: Weigh 12% of clay raw material, 80% of calcareous raw material and 8% of corrected raw material according to the mass fraction, mix uniformly, and grind until the particle size of the mixture is less than 75 μm, to obtain raw meal;
[0028] (2) Calcination: Calcining the raw meal into Portland cement clinker in a drum type rotary kiln, the cylinder of the drum type rotary kiln is at an inclination angle of 3° to the horizontal:
[0029] First feed the raw material from the high end of the drum type rotary kiln, dry it in the kiln at 100°C until the moisture in the raw meal does not exceed 1%, preheat and dehydrate at 300°C, compl...
Embodiment 2
[0038] A cement produced by using waste and old fired brick powder is composed of the following raw materials in parts by weight: 50 parts of Portland cement clinker, 30 parts of waste and old fired brick powder, and 4 parts of gypsum.
[0039] The preparation method of described Portland cement clinker is:
[0040] (1) Raw material preparation: take 15% of clay raw material, 80% of calcareous raw material and 5% of corrected raw material according to the mass fraction, mix uniformly, and grind until the particle size of the mixture is less than 75 μm, to obtain raw meal;
[0041] (2) Calcination: Calcining the raw meal into Portland cement clinker in a drum type rotary kiln, the cylinder of the drum type rotary kiln is at an inclination angle of 3° to the horizontal:
[0042] First feed the raw material from the high end of the drum type rotary kiln, dry it in the kiln at 150°C until the moisture in the raw meal does not exceed 1%, preheat and dehydrate at 400°C, completely d...
Embodiment 3
[0051] A cement produced by using waste fired brick powder is composed of the following raw materials in parts by weight: 67 parts of portland cement clinker, 60 parts of waste fired brick powder and 4.5 parts of gypsum.
[0052] The preparation method of described Portland cement clinker is:
[0053] (1) Raw material preparation: Weigh 10% of clay raw material, 80% of calcareous raw material and 10% of corrected raw material according to the mass fraction, mix uniformly, and grind until the particle size of the mixture is less than 75 μm, to obtain raw meal;
[0054] (2) Calcination: Calcining the raw meal into Portland cement clinker in a drum type rotary kiln, the cylinder of the drum type rotary kiln is at an inclination angle of 3° to the horizontal:
[0055] First feed the raw material from the high end of the drum type rotary kiln, dry it in the kiln at 200°C until the moisture in the raw meal does not exceed 1%, preheat and dehydrate at 500°C, completely decompose the ...
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