Grinding stabilizing additive for vertical roller mills
OwnerDenise A. Silva, Josephine H. Cheung +7inventors
InventorsDenise A. Silva, Josephine H. Cheung, David F. Myers, Byong-Wa Chun, Ernie Rocha, Wee Fuk Lai, Leslie J. Buzzell, Jeffrey Thomas, Joshua Detellis
Life of this patent
Estimating the term…
Abstract
A method for grinding a solid in a vertical roller mill (VRM), comprising grinding at least one solid in the presence of a grinding stabilizing additive, wherein the grinding stabilizing additive comprises an alkanol amino acid compound or a disodium or dipotassium salt thereof having the structural formula (I): The definitions of variables R1, R2, and R3 are provided herein.
Claims35
A method for grinding a solid in a vertical roller mill (VRM), comprising:
- grinding at least one solid in the presence of a grinding stabilizing additive, wherein the grinding stabilizing additive comprises an alkanol amino acid compound or a disodium or dipotassium salt thereof having the structural formula:
- wherein:
- R1 is (C1-C4)alkyl-OH;
- and
- R2 and R3, each independently, is (C0-C3)alkyl-COOR*, wherein R* is H, Na+, K+, or ½ Ca++, wherein the grinding stabilizing additive is a liquid.
An additive composition for grinding, comprising:
- (a) EDG, IPDG, or mixture thereof;
- and (b) at least one alkanolamine chosen from DEIPA, EDIPA, TIPA, TEA, THEED, DEIPA acetate, EDIPA acetate, TIPA acetate, TEA acetate, THEED acetate, or a mixture thereof.
An additive composition for grinding, comprising EDG or IPDG, or a mixtures of the forgoing diglycines;
- diethylene glycol;
- and at least one alkanolamine chosen from TEA, DEIPA, EDIPA, TIPA, THEED, the acetate of any of the foregoing alkanolamines, or a mixture of any of the foregoing alkanolamines and acetates thereof.
An additive composition for grinding, comprising EDG, IPDG, or a mixture of the forgoing diglycines;
- tripropylene glycol;
- and at least one alkanolamine chosen from TEA, DEIPA, EDIPA, TIPA, THEED, the acetate of any of the foregoing alkanolamines, or a mixture of any of the foregoing alkanolamines and acetates thereof.
An additive composition for grinding, comprising EDG, IPDG, or a mixture of the foregoing diglycines;
- at least one glycols chosen from diethylene glycol, tripropylene glycol, and tetrapropylene glycol;
- and at least one alkanolamine chosen from TEA, DEIPA, EDIPA, TIPA, THEED, the acetate of any of the foregoing alkanolamines, or a mixture of any of the foregoing alkanolamines and acetates thereof.
Dependencies are inferred from the claim text.