SU1435572A1 - Method of producing ceramic articles - Google Patents

Abstract

The invention relates to the production of heat-resistant ceramic products. In order to increase the yield of suitable products and simplify the process, the method of making ceramic products involves mixing a filler containing a clay component with an aluminum-boron phosphate binder in an amount of 3-5 wt.% With the subsequent introduction of a temporary binder, granulated, pressed and roasted. The percentage of usable products, for example, of corundum ceramics is 83-88%, and the fraction of 0.3-1 mm during the preparation of the charge is 72-80%. 1 tab.

Description

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 The invention relates to the manufacture of; Stv ceramic electrical insulating products by the method of pressing, for example, electrical installation thermo-resistant products from ultrafarcerated, cordierite, zircon ceramics and other materials containing plastic clay component and abrasive components (alumina, electro-corundum, zircon, and .P.).

The purpose of the invention is to increase the yield of products and simplify the process.

The manufacture of ceramic products is carried out as follows.

The initial components of schitty, for example, materials of ultra-porcelain UV-46, zirconium, cordierite, corundum, carborundum ceramics containing a clay component, are mixed and ground in a wet mill using a wet method at a ratio of material: ground: 1: 1; (1-1.5) for 20-28 hours. Then the slurry is subjected to sieve cleaning and magnetic separation. After averaging the slip in a pool with a propeller agitator, it is subjected to a filter press, the moisture content of the cake after the compression filter ™ is 2011%} after which the mass is washed for moisture averaging and homogenization. The resulting mass is dried to a moisture content of not more than 2% and crushed to a particle size of not more than 1 mm. - An alumino-phosphate binder with a density of 1.55-1.65 in an amount of 3-5% by weight is introduced into the so-obtained grains and mixed in

I5t5 min in a Z-shaped mixer. Into the homogeneous mineral powder thus obtained, a temporary bond — pre-smetanic oleic acid and kerosene — was introduced in an amount of 1 and 3%, respectively, in excess of 100% and stirred for 1515 minutes. The obtained powder is subjected to granulation by running in and sifting through a No. 1 mesh screen. From the obtained press powder, the product is pressed at a specific pressing pressure of 20-60 MPa depending on the shape and size of the product, then they are dried at 110 ° C to a residual moisture content more than% and burned to the required temperature (for example, ultrafarforced burned at 1400 ° C, zirconium and cordierite ceramics - at 1320-1360 C, corundum and carborundum - at U60-1500 ° C).

Characteristics of the material obtained in comparison with the known are presented in the table.

Claims (1)

Formula of о.б р and e A method of making ceramic products by mixing a filler with a clay component: volume, introduction of temporary and phosphate binders, granulation followed by pressing and roasting, characterized in that, in order to increase the yield of the products and simplify the process, the phosphate binder is used alumoborphosphate, which is introduced in the amount of 3-5 wt.% before the introduction of a temporary binder The amount of phosphate binder, wt.% The amount of the required fraction of 0.3-1 mmD: ultrafarcera zirconian ceramics cordierite ceramics corundum ceramics 40 41 42 38 70 73 71 72 75 78 78 80 73 68 68 76 Carborundum ceramics Yield of products,%: In a known method, an algomophosphate binder is used which is introduced simultaneously with a temporary binder, and in examples 1-3 is an alumino-borophosphate binder that is introduced before the introduction of a temporary binder. 38 70 75 72