University of Kentucky Research Foundation

Minova International Limited

Thomas Lee Robl

Tristana Duvallet

Robert Benjamin Jewell

Robert F Rathbone

Anne Elizabeth Oberlink

John Groppo

Peter Shelley Mills

John G Groppo, Jr

Charles J McCormick

Tristana Duvallett

Yongmin Zhou

Lance Cook

Lev Ring

Anne Oberlink

Robert Jewell

A cement clinker composition incorporates calcium fluoride and iron oxide to reduce firing temperatures and increase strength. High fly ash, aluminum dross, aluminum scrap, high aluminum clays and combinations thereof may also be substituted for bauxite in the cement clinker composition.

Composite mineralizers/fluxes for the production of alite/calcium sulfoaluminate clinkers

A method of hydraulic fracturing of a subterranean formation having a well bore includes steps of sequentially injecting different slurries with nano, micro and then macro sized proppants generated from coal ash into the well bore in order to enhance oil and gas production from fracking. A slurry useful in the method includes (a) water, (b) coal combustion fly ash particles that have a mean particle size (d50) of about 6 microns and (c) a surfactant.

Method of multi-stage fracturing of subterranean formation and slurry for that method

A concrete and asphalt repair coating formulation includes a cement component and an aggregate component. The cement component includes a calcium sulfoaluminate cement and a Portland cement. The aggregate component includes coarse aggregates between 125-500 microns in diameter and fine aggregates between 5-62.5 microns in diameter.

Concrete repair coating

A proppant for use in hydraulic fracturing to stimulate a well is provided. The proppant is fly ash particles having a mean particle size (d50) of between 45 &#x3bc;m and 150 &#x3bc;m and a size distribution defined by (d10)&#x2264;5 &#x3bc;m and (d98)&#x2264;250 &#x3bc;m.

Proppant for use in hydraulic fracturing to stimulate a well

The invention provides a cementitious composition comprising a cement component comprising (i) an accelerant, (ii) a calcium sulphate source and (iii) an ettringite forming cement; an aggregate; and optionally water; wherein the cement has a minimum unconfined compressive strength of 1500 psi when tested in accordance with ASTM C1140 and/or C1604 at 15 minutes after placement; methods for its use and concrete formed from it.

Cementitious compositions

A hybrid cement clinker incorporates specific ranges of clinker phases and falls within specific modulus values as set forth and described in this document.

Hybrid cement clinker and cement made from that clinker

A method for selective separation of particles from a particle-containing material includes preparing a slurry of the particle-containing material and a dispersant, passing the slurry through a hydraulic classifier in a first direction, establishing a particle flow in a direction that is different from the first direction, and recovering particles having a mean particle size of about 2-7 &#x3bc;m. The flow of particles defines a cross-current flow relative to the slurry feed direction. The method further includes providing the classifier with an interior divider assembly defining at least one inclined channel. The divider assembly typically includes a plurality of substantially parallel dividers separating the classifier into multiple channels having a substantially equal internal volume. A hydraulic classifier for separating particles having a mean particle size of from about 2-7 &#x3bc;m in accordance with the present method is provided also.

Method for hydraulically separating carbon and classifying coal combustion ash

A novel method for producing fly ash material with a range of particle sizes from about 2.0 to about 4.0 &mgr;m is provided utilizing superplasticizers. The method produces fly ash material suitable for use as filler material in the plastics industry and super pozzolan for the concrete industry.

Technology and methodology for the production of high quality polymer filler and super-pozzolan from fly ash

A method for improving the pozzolanic character of fly ash includes the steps of first hydraulically classifying and then flotation separating the fly ash in order to reduce particle size distribution and remove carbon. The method also includes the steps of spiral concentrating separated coarse particles to recover iron, pyrite and marcasite and screening the fly ash to remove ultra-light carbon and plant debris.

Growing community of inventors

Sadieville, KY, United States of America

Thomas Lee Robl