High strength proppants
AssigneeSaint-Gobain Ceramics & Plastics, Inc.
InventorsLaurie San-Miguel, Kevin R. Dickson, Tihana Fuss, Walter T. Stephens
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Abstract
A sintered ceramic particle made from a ceramic material having a true density greater than 3.5 g/cc and a composition having no more than 30 weight percent silicon oxide and at least 15 weight percent iron oxide, based on the combined weight of the oxides of aluminum, iron and silicon, is disclosed. A process that utilizes an externally applied compressive force to make a ceramic particle is also disclosed.
Claims9
A sintered particle comprising ceramic material, wherein said ceramic material comprises oxides of aluminum, iron and silicon;
- said oxides of silicon, calculated as SiO2, represent no more than 30 weight percent of said oxides' combined weight;
- said oxides of iron, calculated as Fe2O3, represent between 20 and 40 weight percent of said oxides' combined weight;
- and said ceramic material's true density exceeds 3.5 g/cc.
A sintered particle comprising ceramic material, wherein said ceramic material comprises oxides of aluminum, iron and silicon;
- said oxides of silicon, calculated as SiO2, represent no more than 30 weight percent of said oxides' combined weight;
- said oxides of iron, calculated as Fe2O3, represent between 15 and 40 weight percent of said oxides' combined weight;
- and said ceramic material's true density exceeds 4.0 g/cc.
Dependencies are inferred from the claim text.