SU711006A1 - Charge for production of building ceramic articles - Google Patents

Description

The invention relates to building materials, namely compositions for the manufacture of ceramic stones, bricks, drainage pipes, and the like. A known mixture used for the manufacture of electrical insulators, containing refractory clay and mica. This shaft is not suitable for the manufacture of building ceramics, because. When O, 5-1, O% of mica is introduced into the mixture, the strength properties and frost resistance of the products do not improve, and economic indicators deteriorate, as refractory clay and mica are scarce materials. Closest to the invention to the technical essence and the achieved effect is the charge for the manufacture of building ceramic products, mainly bricks, containing fusible clay, fireclay and burnable additive. The disadvantage of this mixture is that the introduction of fireclay in the clay improves the drying properties of freshly molded products, but at the same time reduces their strength and frost resistance. The purpose of this invention is to increase the strength and frost resistance. This goal is achieved by the fact that the charge for building ceramic products, mainly bricks, containing low-melting clay, a burner and a burnable additive, additionally contains mica-based fine material in the following ratio of components in wt.%: Lpina fusible 58-92 5 Oily-containing finely ground material4-20 In addition, it can also be achieved by the fact that the mica-containing matrix has the following particle size distribution in wt.%: O, 25-2, O mm3-25 0.2575-97.

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For the manufacture of products of building ceramics, mines are prepared that contain (by weight,%) clay, an otoshitel, such as chamotte, a burnable additive, such as coal, sawdust, and crushed micaceous material. The control blends do not have the addition of mica-containing material and consist of clay, scum, and burnout.

supplements.

As mica-containing material, mica wastes from the production of electrically-welded products, containing 90% of mica (in a dry state) are used.

Materials for making shchi are prepared as follows.

After the removal of stony inclusions from clay, it is subjected to grinding. Micaceous materials are finely ground, burnable additives (coal) are crushed and sieved through sieves (sawdust is also sieved). Cleaner - fireclay fraction and sort. The components of shi.khty are metered, processed, molded, dried and calcined according to a typical scheme for the production of ceramic building products.

The specific composition of the charge and the properties of the samples are presented in table 1.

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As can be seen from the table, the compressive strength of oCfjaats is removed when no more than 8% of crushed mica-containing material is introduced into the charge

5 (compressive strength of samples without additives - 234.1 kgs / cm, with the addition of 4% mica - 261 kgs / cm, with the addition of 8% mica -329 kgs / cm). Introduce up to 2% of crushed micaceous additive

10 materials in shih.htu provides an increase in bending strength (bending strength of samples without the additive - 134.6 kTs / cm with the addition of 8% mica - 129.6 kGs / cm with the addition of 2O% mica 275 kg / cm).

15 Hollow brick with 28% hollowness, molded from shi.hta with the addition of 8% crushed mica-containing material is ISO grade and SO frost resistance cycles, hollow brick,

20 formed from the control mixture (without the addition of crushed mica-containing material), has a mark of 75 and a frost resistance of 15 cycles.

Increased strength compared

25 with control articles is observed in all cases when the components of the shaft are within the limits of the ratios indicated in the claims. of the invention of the invention. 1. A mixture for the manufacture of strongest ceramic products, mainly korich, containing low-melting clay, chamotte and burnable additive, characterized in that, with an increased chain of strength and frost resistance, it additionally contains mica containing fine stone the material at the following ratio of compressors to wt.%; Mainly fusible 58-92 Shamot3-17 Burning out additive1-5 I sleep with a holding material 4-20 7 610 2. It is recommended that the micaceous material has the following composition in weight%: 0.25-2 mm 3-25 i О, 25 75-97 Sources of information taken into account during the examination 1. USSR author's certificate NO 366159, cl. С О4 В ЗЗ / ЗО, 197О. 2. Scientific and technical information VNIIESM, M., 1974, p. 11-14 (prototype).

Claims (2)

Claim 2. The charge for u and I paragraph 3, distinguishing that mica 1. The mixture for the manufacture of building ceramic Products, mainly particle, containing clay fusible * 5 kyu "chamotte and a burnable additive, characterized in that, for the purpose of the material has the following particle size distribution in wt.%: 0.25-2 mm 3-25 i 0.25 75-97 increase in strength and frost resistance, it additionally contains mica-containing fine-ground material in the following ratio of components in wt.%: Low-melting clay58-92 Chamotte 3-17 Burnout Additive 1-5 Mica-containing fine-haired material 4-20