Methods and compositions comprising cement kiln dust having an altered particle size
First Claim
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1. A method comprising:
- individually grinding a cementitious component consisting essentially of a partially calcined kiln feed removed from a gas stream, wherein the partially calcined kiln feed has an original mean particle size, wherein the cementitious component was ground to reduce the original mean particle size of the partially calcined kiln feed to a size of about 15 microns or less, wherein the original mean particle size of the partially calcined kiln feed was reduced by about 25% or more by the grinding, and wherein the partially calcined kiln feed comprises SiO2, Al2O3, Fe2O3, CaO, MgO, SO3, Na2O, and K2O; and
mixing the ground partially calcined kiln feed with a hydraulic cement.
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Abstract
Methods and compositions are disclosed that comprise cement kiln dust having a mean particle size that has been altered. An embodiment discloses a method of preparing cement kiln dust comprising: providing cement kiln dust having an original particle size; and altering the mean particle size of the cement kiln dust from the original size by grinding, separating, or a combination thereof. Another embodiment discloses a well treatment fluid comprising: cement kiln dust having a mean particle size that has been altered from its original size by grinding, separating, or a combination thereof; and water.
430 Citations
30 Claims
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1. A method comprising:
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individually grinding a cementitious component consisting essentially of a partially calcined kiln feed removed from a gas stream, wherein the partially calcined kiln feed has an original mean particle size, wherein the cementitious component was ground to reduce the original mean particle size of the partially calcined kiln feed to a size of about 15 microns or less, wherein the original mean particle size of the partially calcined kiln feed was reduced by about 25% or more by the grinding, and wherein the partially calcined kiln feed comprises SiO2, Al2O3, Fe2O3, CaO, MgO, SO3, Na2O, and K2O; and mixing the ground partially calcined kiln feed with a hydraulic cement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of preparing a partially calcined kiln feed removed from a gas stream comprising:
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providing the partially calcined kiln feed removed from a gas stream, wherein the partially calcined kiln feed has an original mean particle size and comprises SiO2, Al2O3, Fe2O3, CaO, MgO, SO3, Na2O, and K2O; and intergrinding the partially calcined kiln feed with one or more additives to reduce the original mean particle size of the partially calcined kiln feed to a size of about 15 microns or less, wherein the original mean particle size of the partially calcined kiln feed was reduced by at least about 25% by the grinding, wherein the partially calcined kiln feed is present in an amount of about 55% or more by weight of a total amount of the partially calcined kiln feed and the one or more additives. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A method of preparing a partially calcined kiln feed removed from a gas stream comprising:
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providing the partially calcined kiln feed removed from a gas stream, wherein the partially calcined kiln feed has an original mean particle size and comprises SiO2, Al2O3, Fe2O3, CaO, MgO, SO3, Na2O, and K2O; and intergrinding the partially calcined kiln feed with at least one additive selected from the group consisting of pumice, perlite, and a combination thereof to reduce the original mean particle size of the partially calcined kiln feed to a size of about 15 microns or less, wherein the original mean particle size of the partially calcined kiln feed was reduced by about 25% or more by the grinding, wherein the partially calcined kiln feed is present in an amount of about 55% or more by weight of a total amount of the partially calcined kiln feed and the one or more additives. - View Dependent Claims (28, 29, 30)
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Specification