RU2005110360A - METHOD FOR PRODUCING GRANULATED PENOSILICATE-PENOSILICATE GRAVEL - Google Patents

Claims (1)

A method for producing foam silicate gravel, including drying and crushing of cullet and blowing agent in mills, feeding ground batch to the storage hopper, weighing dosing of cullet and blowing before mixing, granulating the mixture using an aqueous solution of soluble glass, drying the granules, loading granules into the storage bin, foaming in a rotary kiln together with a separating medium, annealing the granules and separating them from the separating medium after annealing, characterized in that as a blowing agent is used with all carbonate and carbon materials, while the amount of carbonate blowing agent in a mixture with carbon is taken from 5 to 95 wt.%, the blowing agent is milled separately with cullet, additionally, crushed quartz is used, in which quartz river sand is taken in an amount not exceeding 20 wt. .% of the amount of glass, the powders of cullet, quartz and blowing agent are mixed in a drum mixer, and the mixture of the obtained powder and an aqueous solution of soluble glass is carried out in a high-speed mixer, the granules are obtained by pelletizing in a drum granulator, which are dried in a drum dryer, with subsequent foaming of the granules in a rotary kiln, the temperature in the first half of the furnace along the granules is maintained in the range of 720-900 ° C, and dry crushed clay is used as a separating medium , chalk, cement separately, in a mixture or in a mixture with river quartz sand, and these components are taken in a mixture with quartz sand in an amount of less than 20 wt.% of the amount of the latter.