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STRONG LOW DENSITY CERAMICS

  • US 20110111990A1
  • Filed: 04/28/2008
  • Published: 05/12/2011
  • Est. Priority Date: 04/28/2008
  • Status: Abandoned Application
First Claim
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1. A ceramic proppant comprising a plurality of sintered spherical pellets, prepared from a precursor mixture comprising at least a first component selected from alumina, a mineral comprising aluminum oxide, an inorganic salt, a metallic oxide wherein the metal is not all aluminum, an impure alumina, and mixtures thereof, wherein if the first component comprises alumina or an inorganic salt it must comprise at least one other first component, and a second component comprising a boron source, wherein said proppant comprises at least a first phase selected from the group consisting of aluminum borates, aluminum boron silicates, and solid solutions of these with alumina and aluminum silicate, and a second phase.

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