Corrosion-resistant ceramic roller and preparation method thereof
A ceramic roller, corrosion-resistant technology, applied in the direction of lighting and heating equipment, furnace type, furnace, etc., can solve the problems that glaze drops easily enter the interior of the roller, the internal structure is easy to change, and affect the service life of the roller, etc., to achieve Effects of reducing total porosity, low crystal activity, and enhancing mechanical properties
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[0060] Correspondingly, the present invention also discloses a method for preparing the above-mentioned corrosion-resistant ceramic roller, which includes:
[0061] (1) carrying out batching, ball milling, inkjet drying and homogenization of each raw material according to the formula to obtain the mixture;
[0062] Wherein, the formula includes in parts by weight: 20-30 parts of kaolin, 5-10 parts of refractory clay, 60-70 parts of alumina, and 1-5 parts of sintering aid.
[0063] (2) adding water to the mixture, wet mixing and granulating to obtain a blank;
[0064] Preferably, step (2) includes: adding 2.4-2.8 cellulose ethers to the mixture, dry mixing for 4-6 minutes; adding 12-15 parts of water, wet mixing for 10-15 minutes, and then granulating to obtain Blank;
[0065] (3) extruding the blank into a hydraulic press to obtain a blank tube;
[0066] (4) drying the billet tube, and controlling the water content to 1.2%-2.5% after drying;
[0067] Preferably, the drying...
Embodiment 1
[0088] formula:
[0089] 20 parts of kaolin, 5 parts of refractory clay, 70 parts of alumina, 2 parts of sintering aid, 3 parts of mineralizer;
[0090] Among them, alumina fine powder is selected as alumina, and its particle size is D50=5μm; talc is selected as sintering aid, and glass frit is selected as mineralizer;
[0091] Preparation:
[0092] (1) each raw material is carried out batching, ball milling, ink jet drying, homogenization according to the formula to obtain the mixture;
[0093] (2) adding water in the described mixture, carrying out wet mixing and granulation to obtain blank;
[0094] (3) extruding the blank in a hydraulic press to obtain a blank tube;
[0095] (4) drying the blank tube, and the moisture content after drying is 1.2%;
[0096] (5) cold isostatic pressing is carried out on the dried blank tube under 150MPa pressure;
[0097] (6) sintering the cold isostatic pressing blank tube to obtain a finished product of a corrosion-resistant ceramic rol...
Embodiment 2
[0100] formula:
[0101] 30 parts of kaolin, 8 parts of refractory clay, 60 parts of alumina, 1 part of sintering aid, and 1 part of mineralizer.
[0102] Wherein, the refractory clay composition is: SiO 2 54.85%, Al 2 O 3 28.75%, Fe 2 O 3 0.8%, TiO 2 2.0%, CaO 0.05%, MgO 0.14%, K 2 O 6.5%, Na 2 The balance of O 0.03% is impurities; alumina is alumina fine powder, and its particle size is D50=1 μm; calcium carbonate is selected as sintering aid; glass frit is selected as mineralizer.
[0103] Preparation:
[0104] (1) batching various raw materials according to the formula and ball-milling to obtain slurry;
[0105] (2) after the slurry pressure filtration, a mud cake is obtained;
[0106] (3) described mud cake is carried out vacuum refining mud, obtain mud material;
[0107] (4) extruding the mud through a vacuum extruder to obtain a billet tube;
[0108] (5) drying the blank tube, and controlling the moisture content of the blank tube to be less than or equal...
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