SU1213000A1 - Method of manufacturing ceramic articles - Google Patents

Description

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The invention relates to the production of building materials and can be used for the manufacture of ceramic products from granular materials derived from clay.

The purpose of the invention is to increase the strength of the products.

A method of making ceramic products from granulated material involves burning the granules, swelling and shaping the products with compression of the granule layer on the rotating rollers, followed by cutting and cooling, while in the firing process the expanded granules are powdered with a mixture of coal dust and iron hydroxides, such as bauxite slurry.

The bauxite slurry used is a waste from the processing of bauxite alumina, the chemical composition of which is given in the table.

To prepare the mixture, the slurry is used dry - powder with a specific surface of 2350. The content of 0.1-ww Tit: xoAn-n-tlame is 37.1Z, therefore, after sifting out, they are crushed in a ball mill before passing through a sieve with a hole size of 0.1 mm.

Noyry4aroT coal dust by crushing and sieving drilling coal.

13,000.

The ratio of coal dust and box sludge is 3: 1, and the flow rate in the amount of 4 kg per 1 m of expanded granules.

5 Example. Prepared according to known technology, granules of clay raw materials, which are burned in a furnace. At the exit from the furnace, the expanded granules in a heated, powdered state are mixed with coal dust and bauxite sludge, then the heated granules are placed in a layer on a moving grate. When blowing a layer of granules heated to 300–350 ° C spirit. Due to the combustion of coal, the heating temperature of the granule psi eluent ns1E1 is increased to 4200-1230 0 versus 1100-130 s according to a well-known method that lead (it- granules Further operations on the formation of products from the expanded ones are carried out according to a known technology.

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 The formation of ferrous melt strengthens the resulting ceramic products, the compressive strength of which is 10.2-11 11 ,, 1 MPa with a bulk density of 900- 1080 kg / m. In addition, water absorption is reduced to 17-18% against 26-28% by a known method, which favorably affects the increase in the frost resistance of products.

The content of oxides.% AN, 01 3.21 41.52 0.77.3.39 1.61 0.72

Compiled by the Obraztsov Editor N. Egorov Tehred T. Dubinchak

722/34

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VNIIPI USSR State Committee

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

Branch ShSh Patent, Uzhgorod, st. Design. four

 The formation of ferrous melt leads to the hardening of ceramic products, the compressive strength of which is 10.2-11 11 ,, 1 MPa with a bulk density of 900- 1080 kg / m. In addition, water absorption is reduced to 17-18% against 26-28% by a known method, which favorably affects the increase in the frost resistance of products.

0.12 0.11 0.23 98.23

Proofreader L. Pilipenko

Claims (1)

METHOD FOR PRODUCING CERAMIC PRODUCTS by forming granules, expanding them, molding _ ·. products by compressing a layer of granules on rotating rolls, followed by cutting and cooling, which is characterized by the fact that, in order to increase the strength of products, expanded granules are dusted with a mixture of coal dust with iron hydroxide. SU _W , 1213000