Method for preparing light ceramsite by adopting DSD acid industrial sludge
A light ceramsite and acid sludge technology, applied in the environmental field, can solve the problems of small particle density, large specific surface area, and low water absorption rate, and achieve the effect of large specific surface area, simple process, and low water absorption rate
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[0012] Example 1
[0013] (1) DSD acid sludge is dried and the clay is dried to crush the two raw materials and screen them with a 100-mesh sieve (particle diameter ≤0.15mm);
[0014] (2) Flux and expansion agent are screened with a 300-mesh sieve (particle diameter≤0.05mm);
[0015] (3) Weigh the binder, flux, expansion agent and dried DSD acid sludge at a weight ratio of 5:0.5:0.5:4, and granulate with water as a binder in a drum granulator. Make raw material balls with a diameter of about 5mm;
[0016] (4) Dry the raw pellets at room temperature for 10 hours;
[0017] (5) Put the raw material ball into a box-type resistance furnace at 350°C, preheat for 15 minutes, then quickly transfer it to a tube-type resistance furnace at 1080°C for 10 minutes, and place the ceramsite at room temperature to cool down. DSD acid sludge lightweight ceramsite.
[0018] The appearance of the prepared light ceramsite is yellow spherical solid with rough surface, and the bulk density is 524kg / m 3 , The...
Example Embodiment
[0019] Example 2
[0020] (1) DSD acid sludge is dried after drying treatment, and after clay drying treatment, the two raw materials are crushed and sieved with a 100-mesh sieve (particle diameter≤0.15mm)
[0021] (2) Flux and expansion agent are screened with a 300-mesh sieve (particle diameter≤0.05mm);
[0022] (3) Weigh the binder, flux, expansion agent and dried DSD acid sludge at a weight ratio of 5:0.5:0.5:5, and granulate with water as a binder in a drum granulator. Make raw material balls with a diameter of about 5mm;
[0023] (4) Dry the raw pellets at room temperature for 13 hours;
[0024] (5) Put the raw material ball into a box-type resistance furnace at 365°C for 16 minutes, then quickly transfer it to a tube-type resistance furnace at 1100°C for 12 minutes, and cool the ceramsite at room temperature to obtain DSD acid sludge lightweight ceramsite.
[0025] The appearance of the prepared light ceramsite is yellow spherical solid with rough surface, and the bulk density i...
Example Embodiment
[0026] Example 3
[0027] (1) DSD acid sludge is dried after drying treatment, and after clay drying treatment, the two raw materials are crushed and sieved with a 100-mesh sieve (particle diameter≤0.15mm)
[0028] (2) Flux and expansion agent are screened with a 300-mesh sieve (particle diameter≤0.05mm);
[0029] (3) Weigh the binder, flux, expansion agent and dried DSD acid sludge at a weight ratio of 4:0.5:0.5:5, and granulate with water as a binder in a drum granulator. Make raw material balls with a diameter of about 5mm;
[0030] (4) Dry the raw pellets at room temperature for 15 hours;
[0031] (5) Put the raw material ball into a box-type resistance furnace at 385°C, preheat for 18 minutes, and quickly transfer it to a tube-type resistance furnace at 1110°C for 14 minutes, and cool the ceramsite at room temperature to obtain DSD acid sludge lightweight ceramsite.
[0032] The appearance of the prepared lightweight ceramsite is yellow spherical solid with rough surface, and the ...
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