METHOD FOR THERMAL PROCESSING OF ADOBE BRICK GRANULES AND SEPARATING MEDIUM FOR ITS REALISATION Russian patent published in 2009 - IPC C04B20/06 

FIELD: technological processes; chemistry; construction.

SUBSTANCE: invention is related to production of granulated fillers for building mortars, concrete or used as independent loose heat-insulating material. Method for thermal processing of adobe bricks granules includes swelling of adobe brick granules in rotary furnace at efficient temperature in presence of powdery separating medium at ratio of separating medium and adobe granules of less than 1:1, but not less than 1:2 in volume. Adobe granules are used, which are produced from crushed basaltic andesite of Baranovskoe deposit with the following chemical composition (wt %): SiO₂ - 55.6-60.84; TiO₂ - 1.65-2.27; Al₂O₃ -13.97-16.26; Fe₂O₃ - 0.99-3.61; FeO - 3.98-6.89; CaO - 3.63-5.19; MgO - 2.11-4.22; MnO - 0.07-0.10; P₂O₅ - 0.22-0.44; K₂O - 3.00-4.33; Na₂O - 2.66-3.45; LoI (loss on ignition) - 0.41-2.56, with addition of at least sodium hydroxide solution in efficient amount.

EFFECT: reduced amount of powdery separating medium, reduced power inputs in production of granulated fillers.

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