Metakaolin production and enhancement of industrial minerals
AssigneePneumatic Processing Technologies, LLC
InventorMichael A. Jones
Life of this patent
Estimating the term…
Abstract
Methods for preparing metakaolin-enhanced industrial minerals. Mixing and heating kaolinite clay with an industrial mineral, such as activated carbon, that is between 750° F. and 1400° F. results in a metakaolin/activated carbon complex that provides good mercury sorbent qualities while producing a fly ash (after use as a sorbent in emissions applications) that has a lower foaming index.
Claims10
A method of producing metakaolin, comprising the step of heating kaolinite clay with a hot industrial mineral, wherein said kaolinite clay is added to the hot industrial mineral after said industrial mineral has been heated to a temperature of between 750° F. to 1400° F. and discharged from a furnace or calciner, and the kaolinite clay is heated solely using the heat from the hot industrial mineral for a time sufficient to create metakaolin, wherein said kaolinite clay is about at least 90% pure and the temperature of the kaolinite clay does not vary by more than 50° F. during the heating for a time sufficient to create metakaolin.
A method of producing metakaolin, comprising the step of heating kaolinite clay with a hot industrial mineral, wherein said kaolinite clay is added to the hot industrial mineral after said industrial mineral has been heated to a temperature of between 750° F. to 1400° F. and discharged from a furnace or calciner, and the kaolinite clay is heated solely using the heat from the hot industrial mineral for a time sufficient to create metakaolin, wherein said hot industrial mineral is cement clinker or carbon char.
Dependencies are inferred from the claim text.