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We Will consider these processes, since receipt of a raw mix in the furnace, i.e. Going from its top end to the bottom. доставка цветов санкт ставрополь
In an evaporation zone there is a drying of the arrived raw materials at gradual rise in temperature with 70-80°С (in the end of this zone), therefore the first zone names still a drying zone. The dried material komkuetsja, at perekatyvanii clods break up to smaller granules. бензиновая электростанция 10 квт .
In a zone of heating which follows raw materials drying, at gradual heating of raw materials with 200 to 700°С burn down organic impurity being in it, from clay minerals water (leaves kristallohimicheskaja at 450-500°С) and is formed kaoli-nitovyj anhydride Al2O3-2SiO2 and other similar connections. Preparatory zones (evaporation and heating) at a wet way of manufacture occupy 50-60% of length of the furnace (considering from the cold end), at a dry way raw materials preparation is reduced at the expense of an evaporation zone.
In a calcination zone (its extent - 20-23% of length of the furnace) the temperature of a burnt material rises with 700 to 1100°С, here comes to the end process dissotsiatsii carbonic salts of calcium and magnesium and there is a significant amount free okisi calcium. Thermal dissotsiatsija - it endotermichesky the process going with the big absorption of heat, therefore heat consumption in the third zone of the furnace the greatest. In the same zone there is a disintegration degidratirovannyh clay minerals on oxides SiCb, А12О3, Fe2O3 which enter chemical interaction with SaO. As a result of these reactions occurring in a firm condition, minerals ЗСаО-А12О3, by SaO-A12O3 and partially 2CaO-SiO2 are formed.
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