Method for producing mineral products having a great heat content from waste materials and slurries and resulting products
AssigneeCarrieres du Boulonnais
InventorGuy Beauvent
Life of this patent
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Abstract
The method for producing mineral products having a great heat content from waste materials and slurries and resulting products comprises the steps of: submitting the waste materials and slurries to a homogenizing mixing; making a stoichiometric mixture at least of CaCO.sub.3, clay and SiO.sub.2 ; circulating the stoichiometric mixture in at least one heating and calcinating furnace whereby a lime product is produced at a temperature for decarbonating CaCO.sub.3 ; separating at least in part the lime product; and raising the temperature at least until obtainment of (CaO).sub.2 (SiO.sub.2).beta. having hydraulic properties and a crystallised form wherein .beta. is belite.
Claims20
A method for producing mineral products having a great heat content from waste materials and slurries and resulting products, comprising the steps of:
- submitting said waste materials and slurries to a homogenous mixing to obtain a homogenized product;
- making a stoichiometric mixture at least of CaCO.sub.3, clay and SiO.sub.2 from said homogenized product;
- circulating said stoichiometric mixture in at least one heating and calcinating oven whereby a lime product is produced at a temperature for decarbonating CaCO.sub.3 ;
- separating at least in part said lime product;
- and raising said temperature to a level effective for obtaining (CaO).sub.2 (SiO.sub.2) .beta. having hydraulic properties and a crystallized form wherein .beta. is belite.
Dependencies are inferred from the claim text.