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US 10,982,163 B2Granted
Mineral additive blend compositions and methods of use thereof
AssigneeImerys USA, Inc.
InventorsThomas Landon, James David Osby, Christian Ravagnani, Murielle Perronnet
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Abstract
Mineral additive blend compositions and a method for operating a furnace are provided in order to avoid combustion problems such as agglomeration, deposition, corrosion and reducing emissions. A method for operating a furnace, such as a fluidized-bed reactor, pulverized-fuel combustor, and grate combustor, includes introducing fuel and a mineral additive blend including a clay and a functional mineral into the furnace.
Claims11
A method for operating a combustor, the method comprising:
- introducing a fuel into a furnace, wherein the fuel comprises potassium and phosphorous and the material in the furnace has a first elemental molar ratio (Si+K+Na+P):(Ca+Mg+Al);
- introducing a mineral additive blend into the furnace in an amount sufficient to sufficient to reduce the first elemental molar ratio (Si+K+Na+P):(Ca+Mg+Al) of the material in the furnace to a second elemental molar ratio, and
- heating at least a portion of the fuel and the mineral additive blend,
- wherein the mineral additive blend comprises
- (i) about 70% to 98% by weight of an aluminosilicate selected from kaolin, bauxitic kaolin, ball clay and blends thereof, and
- (ii) about 2% to 30% by weight of a functional mineral comprising magnesium selected from of talc, dolomite, brucite and magnesium carbonate;
- and
- wherein the second elemental molar ratio is at least 0.10 and less than 1.25.
5 more elements
Dependencies are inferred from the claim text.