Claims
- 1. The process of forming a pozzolan enhancing product from fly ash which fly ash contains a carbon component having entrapped fly ash microspheres in such component, comprising the steps of:
- subjecting the fly ash to flotation in flotation cells,
- removing from said flotation cells a first overflow which has a carbon rich fraction and a first under flow comprising fly ash substantially free of carbon,
- subjecting said first overflow to ultrasonic conditioning for releasing microspheres from said carbon rich fraction, and
- subjecting said ultrasonically treated first overflow to further flotation in flotation cells thereby providing a second overflow consisting primarily of carbon particles and forming a second underflow consisting primarily of fly ash microspheres as a pozzolan enhancing product.
- 2. The process of claim 1 further comprising the step of combining said fly ash microspheres with fly ash of said first underflow to form an enhanced pozzolan fly ash.
RELATED APPLICATIONS
This application is a continuation of Ser. No. 09/040,515 filed Mar. 17, 1998. Applicant further claims the benefit of the filing date of Provisional Application Ser. No. 60/050,167 filed Jun. 19, 1997.
US Referenced Citations (8)
Foreign Referenced Citations (5)
Number |
Date |
Country |
1201093 |
Sep 1986 |
JPX |
766650 |
Sep 1980 |
RUX |
1233943 |
May 1986 |
RUX |
766650 |
Sep 1980 |
SUX |
1233943 |
May 1986 |
SUX |
Continuations (1)
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Number |
Date |
Country |
Parent |
040515 |
Mar 1998 |
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