Abstract: A sintered rod-shaped proppant and anti-flowback agent possesses high strength and high conductivity. The sintered rods comprise between about 0.2% by weight and about 4% by weight aluminum titanate. In some embodiments, the sintered rods are made by mixing bauxitic and non-bauxitic sources of alumina that may also contain several so-called impurities (such as TiO2), extruding the mixture, and sintering it. The starting material may optionally be milled to achieve better compacity and crush resistance in the final sintered rod. A fracturing fluid may comprise the sintered rods alone or in combination with a proppant, preferably a proppant of a different shape.

Abstract: A method for manufacturing microfibrillated cellulose, a particulate grinding medium suitable for use in said method, a material which wears rough, and a method for making said particulate grinding medium.

Abstract: The present invention relates to sintered polycrystalline flat-shaped geometrically structured ceramic abrasive elements designed for the use in resin bonded wheels, particularly in cut-off wheels. The present invention also relates to a method of making such sintered polycrystalline flat-shaped geometrically structured ceramic abrasive elements and the use thereof.

Abstract: A method for manufacturing microfibrillated cellulose, a particulate grinding medium suitable for use in said method, a material which wears rough, and a method for making said particulate grinding medium.

Abstract: A method for using a composition for use as rock dust in an underground mine is disclosed. The composition includes a fine, wet ground inorganic particulate material treated with at least one hydrophobic treatment, and a coarse, untreated, dry ground inorganic particulate material. Also disclosed is a composition including coal dust and mine rock dust including a fine, wet ground inorganic particulate material treated with at least one hydrophobic treatment, and a coarse, untreated, dry ground inorganic particulate material. The amount of mine rock dust may be sufficient to render the coal dust explosively inert according to at least one of a 20-L explosibility test or an ASTM E1515 explosibility test. The fine, wet ground inorganic particulate material may be calcium carbonate. The coarse, untreated inorganic particulate material may be calcium carbonate. The fatty acid may be stearic acid.

Abstract: The present invention relates to sintered platelet-like randomly shaped abrasive particles based on alpha alumina having a hardness HV of at least 20 GPa and a crystal structure with an average crystal size between 100 nm and 300 nm, whereby the abrasive particles comprise a body having a first surface and a second surface opposite to the first surface, both surfaces are separated from each other by a randomly shaped sidewall having a thickness (T) between 20 ?m and 500 ?m.

Abstract: The present invention relates to sintered polycrystalline flat-shaped geometrically structured ceramic abrasive elements designed for the use in resin bonded wheels, particularly in cut-off wheels. The present invention also relates to a method of making such sintered polycrystalline flat-shaped geometrically structured ceramic abrasive elements and the use thereof.

Abstract: A method for manufacturing microfibrillated cellulose, a particulate grinding medium suitable for use in said method, a material which wears rough, and a method for making said particulate grinding medium.

Abstract: A proppant may include a sintered ceramic, wherein the sintered ceramic has a composition including an alumina (Al2O3) content ranging from about 60% to about 78% by weight, an iron oxide (Fe2O3) content ranging from about 5% to about 20% by weight, a silica (SiO2) content ranging from about 1% to about 10% by weight, a titania (TiO2) content ranging from about 2% to about 8% by weight, and a combined iron oxide and titania content of at least about 11% by weight. A proppant may include a sintered ceramic. The sintered ceramic may have a composition including a calcium oxide (CaO) content ranging from about 1% to about 5% by weight. A rod-shaped proppant may include a sintered ceramic having an aspect ratio ranging from about 1.5 to about 3, an apparent specific gravity ranging from about 2.0 to about 4.0, and a pack porosity of greater than 49%.

Abstract: A sintered rod-shaped proppant and anti-flowback agent possesses high strength and high conductivity. The sintered rods comprise between about 0.2% by weight and about 4% by weight aluminum titanate. In some embodiments, the sintered rods are made by mixing bauxitic and non-bauxitic sources of alumina that may also contain several so-called impurities (such as TiO2), extruding the mixture, and sintering it. The starting material may optionally be milled to achieve better compacity and crush resistance in the final sintered rod. A fracturing fluid may comprise the sintered rods alone or in combination with a proppant, preferably a proppant of a different shape.

Abstract: A method for using a composition for use as rock dust in an underground mine is disclosed. The composition includes a fine, wet ground inorganic particulate material treated with at least one hydrophobic treatment, and a coarse, untreated, dry ground inorganic particulate material. Also disclosed is a composition including coal dust and mine rock dust including a fine, wet ground inorganic particulate material treated with at least one hydrophobic treatment, and a coarse, untreated, dry ground inorganic particulate material. The amount of mine rock dust may be sufficient to render the coal dust explosively inert according to at least one of a 20-L explosibility test or an ASTM E1515 explosibility test. The fine, wet ground inorganic particulate material may be calcium carbonate. The coarse, untreated inorganic particulate material may be calcium carbonate. The fatty acid may be stearic acid.

Abstract: A method for using a composition for use as rock dust in an underground mine is disclosed. The composition includes a fine, wet ground inorganic particulate material treated with at least one hydrophobic treatment, and a coarse, untreated, dry ground inorganic particulate material. Also disclosed is a composition including coal dust and mine rock dust including a fine, wet ground inorganic particulate material treated with at least one hydrophobic treatment, and a coarse, untreated, dry ground inorganic particulate material. The amount of mine rock dust may be sufficient to render the coal dust explosively inert according to at least one of a 20-L explosibility test or an ASTM E1515 explosibility test. The fine, wet ground inorganic particulate material may be calcium carbonate. The coarse, untreated inorganic particulate material may be calcium carbonate. The fatty acid may be stearic acid.

Abstract: A method of treating a subterranean formation by fracturing the subterranean formation is disclosed. The method may include injecting a fluid into the subterranean formation, wherein the fluid comprises a blend of a sintered ceramic rod-shaped proppant and a substantially spherical proppant.

Abstract: The present invention relates to sintered platelet-like randomly shaped abrasive particles based on alpha alumina having a hardness HV of at least 20 GPa and a crystal structure with an average crystal size between 100 nm and 300 nm, whereby the abrasive particles comprise a body having a first surface and a second surface opposite to the first surface, both surfaces are separated from each other by a randomly shaped sidewall having a thickness (T) between 20 ?m and 500 ?m.

Abstract: A ceramic precursor composition suitable for sintering form a ceramic material or structure therefrom, for example, a ceramic honeycomb structure, a ceramic material or structure, for example, a ceramic honeycomb structure obtainable by sintering said ceramic precursor composition, a method for preparing said ceramic precursor composition and ceramic material or structure, for example, ceramic honeycomb structure, a diesel particulate filter comprising said ceramic structure, a selective diesel particulate filter comprising said ceramic structure, a gasoline particulate filter comprising said ceramic structure, a vehicle comprising said diesel particulate filter, selective diesel particulate filter or gasoline particulate filter, and a SCR catalyst system comprising said ceramic material or structure.

Abstract: Heat treated alumina zirconia abrasive grains based on Al2O3 and ZrO2 may be fused in an electric arc furnace, and may have a weight content of: Al2O3 between 52% and 62% by weight; ZrO2 and HfO2 between 35% and 45% by weight, with at least 6% by weight based on the total weight content of ZrO2 being present in the tetragonal and/or cubic high temperature modifications of ZrO2; Si-compounds between 0.2% and 0.7% by weight expressed as SiO2; carbon between 0.03% and 0.5% by weight; additives between 0.5% and 10% by weight; and raw-material-based impurities of less than 3% by weight. The heat treated alumina zirconia abrasive grains may be heat treated in air between 350° C. and 700° C. for a time period of one to six hours using a rotary kiln.

Abstract: The present invention relates to sintered shaped abrasive grains on basis of aluminum oxide. Sintered shaped abrasive grains consistent with the disclosure include mineralogical phases made of mullite, tialite and/or armalcolite, and baddeleyite and/or srilankite. Methods for producing sintered shaped abrasive grains using alumina, ilmenite and zircon sand as raw materials are also provided.

Abstract: A ceramic composition, optionally in the form of a honeycomb structure, ceramic precursor compositions suitable for sintering to form said ceramic composition, a method for preparing said ceramic composition and ceramic honeycomb structure, a diesel particulate filter comprising said ceramic honeycomb structure, and a vehicle comprising said diesel particulate filter.

Abstract: A method for using a composition for use as rock dust in an underground mine is disclosed. The composition includes a fine, wet ground inorganic particulate material treated with at least one hydrophobic treatment, and a coarse, untreated, dry ground inorganic particulate material. Also disclosed is a composition including coal dust and mine rock dust including a fine, wet ground inorganic particulate material treated with at least one hydrophobic treatment, and a coarse, untreated, dry ground inorganic particulate material. The amount of mine rock dust may be sufficient to render the coal dust explosively inert according to at least one of a 20-L explosibility test or an ASTM E1515 explosibility test. The fine, wet ground inorganic particulate material may be calcium carbonate. The coarse, untreated inorganic particulate material may be calcium carbonate. The fatty acid may be stearic acid.

Abstract: A method for manufacturing microfibrillated cellulose, a particulate grinding medium suitable for use in said method, a material which wears rough, and a method for making said particulate grinding medium.