SU1203079A1 - Method of producing ceramic articles - Google Patents

Description

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 Image | Metering refers to the production of technical ceramics for electrical and radio engineering products.

The aim of the invention is to reduce energy costs.

An example. The initial clay raw material — bentonite with a content of 90% montroillonite and the absence of X-ray analysis according to the data of quartz and cristobalite is crushed into a powder, a plastic clay dough is prepared from it, and then molded into the form of cylindrical granules 30 × 10 mm in size. The granules are placed in the lithium chloride melt at 800 s for 60 min, then they are removed from the melt

lava, cool, washed with water from soluble salts. The physicomechanical characteristics of such granules are as follows; bulk weight U 1.0 g / cm water absorption W 34%, porosity P 35%. By X-ray phase analysis, it was found that the obtained ceramic material contains only one crystalline phase of P-modulator, in which all intense reflections with an accuracy of +0.05 coincide with the reference values. The presence of a glass phase was not detected by the method of IR-spectroscopy, but P-spodumene differs more poorly in crystallization than the conjugate material obtained by synthesis in gas-air medium at 1200-1300 s. The A-spodumen granules obtained were crushed and crushed, placed in a mold, and 10 × 10 cylindrical articles were prepared under a pressure of 60 Sha. These products were placed in a furnace, where they were dried and then cooled. The obtained products have the following physicomechanical characteristics: volume weight, IjS g / cm, water absorption W 11.2%, porosity P 21.0%,

PRI mme R 2. The original clay raw materials - bentonite with a content of 95% montmorillonite and the ratio of Al: Si, equal, with no

Sosta Editor N.Egorova Tehre

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VNIZHZH USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Filial ShSh Patent, g, Uzhgorod, st. Project, 4

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According to x-ray analysis of quartz and cristobalite, grinding into powder, plastic clay dough is prepared from it and then molded into the form of granules 3x3 mm in size. The granules are placed in the melt of lithium chloride at 620 C for 1-3 minutes and then removed from the melt, cooled, washed with water from soluble salts. According to the data of X-ray analysis and IR-spectroscopy, only one phase of α-modulation is established in the obtained ceramic material.

The granules of the p-modular material are crushed, the powder is placed in a mold, where a product is prepared under a pressure of 40 MPa — discs of 10x2 mm in size with 7 holes. These 0 products are placed in an oven, where they are examined at, then chilled. The resulting products have the following physico-mechanical characteristics: volume weight 2.7 g / cm, water absorption W 6.3%, porosity, 9%.

PRI me R 3. raw materials - bentonite montmorillonite.

The original clay with a content of 90% in which from.

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Quartz and cristobalite are crushed, ground into powder, plastic clay dough is prepared from it, and then molded into granular cylinders 10x10 mm in size. The granules are placed in the melt of lithium chloride at 800 ° C for 60 minutes, then they are removed from the melt, cooled, washed with water from soluble salts. The obtained granules j3 -podumene are crushed and crushed 5 is placed in a mold. Formed: granules disks 10x2 mm in size with 7 holes placed from a modular press powder under a pressure of 40 MPa are placed in a furnace where they are calcined for 60 minutes and then cooled completely. The resulting products have the following characteristics: volume weight 2.8 g / cm water absorption 5.7%, porosity P 14.2%. .

Proofreader G. Reshetnik

Claims (1)

METHOD FOR PRODUCING CERAMIC PRODUCTS, including granulation of clay raw materials, synthesis of β-product from clay granules and lithium salt, grinding, molding, firing and cooling of products, characterized in that, in order to reduce energy consumption, β-spume synthesis is carried out by immersing granules from bentonite clay with a content of 90-95% of the montmorillonite in the molten lithium chloride at 620-800 ^e C and kept for 1-60 min. and firing products - at 1000-1130 ° C.