SU1044613A1 - Raw mix for making autoclave-curing products - Google Patents

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55 The invention relates to the industry of building materials and can be used in the manufacture of silicate articles; The well-known raw material mixture for the manufacture of autoclaved hardening products, including limestone-silica. sand 6A-75; ground serpentinite 5-2 and the closest to the one proposed is a raw material mixture for the manufacture of autoclaved hardening products, cement 20-30 asbestos calcium oxide hydrate 0-8; kaolinic silt 15-1B; silicate dust 0-8; diatomite or flask 0, limestone flour 0-16, returned production waste 10-20 2 "The disadvantage of the known mixture is low compressive strength of raw material, insufficient frost resistance and bending strength of the finished product. The purpose of the invention is to increase the strength with raw cation, frost resistance and strength when bending the finished product c, the goal is to achieve that the raw material mixture for the manufacture of autoclaved hardening products, including cement, asbestos-containing aggregate 5 calcium oxide hydrate and tripoli or diatomite, or contains slag Portland cement5 and, as an asbestos-containing aggregate, wastes from asbestos ores are enriched in the following ratio of components: 5 weight D: 1: 1, Port-Portls-Cement 12-18, 9 Asbestos ores are enriched Calcium oxide hydrate (in terms of CaO) 0.1-1.0 Trepel or diatomite or flask Else The asbestos ore enrichment waste used as a filler has the following composition: Oxides Content in a dry substance. % SiOz39,12 ACO3,19 Else G1 Pau By the introduction of the silica-containing component is carried out by pre-mixing the crushed trefoil, flask or diatomite with a perch at a ratio of 1: 1 - 1: 3. As the studies show, in this case the process of formation of hydrosilicate shells is ensured in the presence of a low-active filler, magnesium hydroxide, which is contained in asbestos waste. After the dosing of asbestos waste, they are moistened to a calcium oxide solution with a concentration of 0-1-1.0. This pre-treatment of the aggregate leads to a significant increase in the adhesion of the newly formed calcium hydrosilicates to the aggregate grains. In addition, this treatment prevents dusting of the material, which improves the occupational health and operational reliability of the equipment. (1 p and me r. Slag Portland cement, prototype cement M 00 are used as a slurry in the proposed mixture. Both mixtures use aggregate after passing a sieve with 1 mm hole size after mixing the mixture components with the active silica — Tripoli or diatomite or flask at ratios of 1: 1 and 3: 1, and asbestos waste is moistened with calcium oxide solutions with concentrations of 0.1, 0.5 and 1.0%, after which all these components are mixed. Table 1. Of the prepared mixtures with a moisture content of 5-7% t brick on a press at a pressure of 1.80 kgf / cm The brick is heat treated according to the mode 2-8-3 at a vapor pressure of 8 tons per meter, the physicomechanical indicators of the obtained silicate brick are given in table 2 ,.

table 2

Products from the mixture of the prototype

As can be seen from the resultant rawness of the raw material under compression and reading. the proposed blend allows the finished products to bend when bent

significantly (2.4-3.9 times) increase (1.5-2.1 times) „

Claims (1)

RAW MATERIAL MIXTURE FOR THE PRODUCTION OF AUTOCLAVE SOLID COMPOSITION PRODUCTS, including cement, asbestos-containing aggregate, calcium oxide hydrate and tripoli or diatomite, or flask, characterized in that, in order to increase the compressive strength of raw materials, frost resistance and bending strength of the finished product, it contains and as an asbestos-containing material, fill in. for - asbestos ore dressing wastes in the following ratio of components, wt. &: Slag Portland cement 12-18.9 Enrichment waste asbestos ore 75-79 Hydroxide calcium (in 0 account on CaO) 0.1-1.0 Tripoli or diatomite, or flask. Rest SU „„ 1044613