Sintered water permeable brick with smooth and mildew-proofing surface
A technology of smooth surface and permeable bricks, applied in the field of building materials, can solve problems such as high cost and environmental pollution caused by sludge, and achieve the effects of increasing porosity, increasing water permeability and beautiful exterior light.
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[0015] A sintered permeable brick with a smooth surface and no mildew, prepared from the following raw materials in parts by weight (kg): sewage plant sludge 40, rice husk 6, potassium feldspar powder 4, fly ash 10, water glass 10, red Mud 11, redispersible rubber powder 3, palm fiber 5, bamboo powder 3, activated volcanic ash 8, fluorite tailings 19, nano silicon carbide 4, sodium carboxymethyl cellulose 2, light magnesium oxide 3.
[0016] The sintered permeable brick with a smooth surface and not easy to mildew is made by the following specific steps:
[0017] (1) Naturally dry the sludge from the sewage plant, pulverize and pass through a 200-mesh sieve to obtain sludge powder for use; mix half of the sludge powder, rice husk, and potassium feldspar powder, add an appropriate amount of water, and put it into a mixer Stir at a speed of 120 rpm to form sludge, control the water content to 20%, and then send it to a granulator for extrusion and granulation to obtain sludge gr...
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