SU92034A1 - Method of briquetting slurry, dust or loose calcareous and dolomitic materials - Google Patents

Description

There is a large amount of various industrial wastes in the industry in the form of lime and magnesite sludge and dust, as well as loose chalk, which is very difficult to use for the production of hydraulic lime.

The proposed method for obtaining hydraulic self-disseminating lime-free lime from calcareous, magnesite and dolomite dust-like wastes (for example: carbonized carbonide sludge, defecation soil of sugar factories, podzol leather factory, etc.), as well as loose chalk, is based on the manufacture of these imitures. fuel briquettes. By burning the injected fuel, these materials are calcined and transformed into burnt limestone. As an additive, it is proposed to inject up to 2% of the cbijioro of gypsum or spent gypsum forms and a small amount of sulphate or potash, or 0.5-1.0% of wood ash. After firing, due to cementation, 1 of its action of molten alkali, the briquettes retain their shape and can be used directly when preparing mortar in a mortar, where under the influence of water, the briquettes are scattered in the nopoinoK and the solution after the end of the process of extinguishing free lime applied to the cause.

Subject invention

The method of briquetting slurry, pulverized, or loose calcareous and dolomite materials mixed with ground fuel for roasting, characterized in that ground material gypsum and potash-containing substances, potash, or ash are added to the mixture during firing.