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Izvest (as well as plaster) - the most ancient knitting substance. It applied for some thousand years B.C.
Air izvest - a product of moderate roasting kaltsievo-magnesian karbonatnyh rocks: a chalk, limestone, dolomitizirovannogo limestone, dolomite with the maintenance of clay no more than 6%. парфюмерия estee lauder
The Basic component of limestone is the calcium carbonate. Burn limestone at temperature to possible fuller removal on reaction. The roasting product contains except (the basic component) as well a quantity okisi the magnesium, formed as a result of thermal dissotsiatsii a magnesium carbonate. Стройматериалы с хранения: дробилки для камня. Хотите купить дробилку?
The above the maintenance of the basic oxides in to exhaust, the the limy dough and that above its grade is more plastic. The maintenance of not extinguished particles which particles nedozhoga and perezhoga concern, reduces quality to exhaust. nedozhogom name the remained grains of raw materials - limestone which will become unproductive the limy dough, worsen its plasticity and peskoemkost. perezhog represents osteklovannuju trudnogasjashchujusja okis the calcium, condensed at a heat. Particles perezhoga gidratirujutsja very slowly with increase in the volume that can cause rastreskivanie plasters, limy products.
Limestone Roasting make in mine furnaces in which limestone arrives in the form of pieces in the size of 8-20 sm more often; roasting of small pieces of limestone can be made in rotating furnaces.
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