A kind of preparation method of silicon carbide porous ceramic filter membrane material
A technology of porous ceramics and filter membranes, which is applied in the field of preparation of silicon carbide porous ceramic filter membrane materials, which can solve the problems of poor filtration effect of filter membranes and easy entry of filter membrane slurry due to particles, so as to avoid detachment and reduce pressure drop , Reduce the effect of filter pressure drop
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example 1
[0022]Weigh 100g of kaolin, 200g of quartz stone, and 600g of potassium feldspar in turn, pour them into a ball mill, add zirconia ball milling beads according to the mass ratio of the ball to material at 10:1, mill for 24 hours, and pass through a 325-mesh sieve after ball milling to obtain ceramic bonded 300g of cryolite, 80g of alumina, and 30g of carbon fiber were weighed in turn, poured into a ball mill, and added zirconia ball milling beads according to the mass ratio of the ball to material at 10:1, and the ball mill was treated for 3 hours, and then the materials in the ball mill were transferred into an oven , dried at a temperature of 105°C to a constant weight to obtain a dried product, and then hot-pressed the obtained dried product at a pressure of 15MPa and a temperature of 120°C to form a thin sheet with a thickness of 2mm to obtain an intermediate layer material; Add 200g of silicon carbide particles with a particle size of 200μm and 15mL of a 3% sodium carboxym...
example 2
[0025] Weigh 120g of kaolin, 220g of quartz, and 650g of potassium feldspar in turn, pour them into a ball mill, add zirconia ball milling beads according to the mass ratio of the ball to material at 20:1, mill for 36 hours, and pass through a 500-mesh sieve after ball milling to obtain ceramic bonded 500g of cryolite, 100g of alumina, 40g of carbon fiber, and 600g of absolute ethanol were weighed in turn, poured into a ball mill, and added zirconia ball milling beads according to the mass ratio of the ball to material at 20:1, ball milled for 5 hours, and then put into the ball mill Transfer the material into an oven and dry it at a temperature of 110°C until it reaches a constant weight to obtain a dried product. Then, the obtained dried product is hot-pressed into a thin sheet with a thickness of 4mm at a pressure of 20 MPa and a temperature of 160°C to obtain an intermediate layer. Materials: Add 300g of silicon carbide particles with a particle size of 300 μm and 30mL of 5...
example 3
[0028] Weigh 110g of kaolin, 210g of quartz stone, and 625g of potassium feldspar in turn, pour them into a ball mill, add zirconia ball milling beads according to the mass ratio of the ball to material at 15:1, mill for 30 hours, and pass through a 412-mesh sieve after ball milling to obtain ceramic bonded powder; weigh 400g cryolite, 90g alumina, and 35g carbon fiber in turn, pour them into a ball mill, add zirconia ball milling beads according to the mass ratio of the ball to material at 15:1, mill for 4 hours, and then transfer the materials in the ball mill to an oven , dried at a temperature of 108°C to a constant weight to obtain a dried product, and then hot-pressed the obtained dried product at a pressure of 18MPa and a temperature of 140°C to form a thin sheet with a thickness of 3mm to obtain an intermediate layer material; Add 250g of silicon carbide particles with a particle size of 250μm and 22mL of a 4% sodium carboxymethyl cellulose solution to the three-necked ...
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