Invention Publication
- Patent Title: GRINDING STABILIZING ADDITIVE FOR VERTICAL ROLLER MILLS
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Application No.: US18526105Application Date: 2023-12-01
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Publication No.: US20240150237A1Publication Date: 2024-05-09
- Inventor: Joshua Detellis , Jeffrey Thomas , Josephine H. Cheung , David F. Myers
- Applicant: GCP Applied Technologies Inc.
- Applicant Address: US GA Alpharetta
- Assignee: GCP Applied Technologies Inc.
- Current Assignee: GCP Applied Technologies Inc.
- Current Assignee Address: US GA Alpharetta
- Main IPC: C04B7/52
- IPC: C04B7/52 ; C04B24/12 ; C04B28/02 ; C04B40/00

Abstract:
Method for grinding a solid in a vertical roller mill (VRM) and a cement composition prepared by the disclosed methods. A method comprises grinding a solid comprising a cement clinker under a water spray in the presence of a grinding stabilizing additive, wherein the grinding stabilizing additive comprises: (i) an alkanol amino acid compound or a disodium or dipotassium salt thereof having the structural formula:
(ii) a glycol; or a mixture of (i) and (ii), wherein the water spray level is reduced by at least 5% compared to a control. Cement compositions prepared by the disclosed methods have the pre-hydration level (Wk) equal to or less than 1.5%. The values and preferred values of R1-3 are disclosed herein.
(ii) a glycol; or a mixture of (i) and (ii), wherein the water spray level is reduced by at least 5% compared to a control. Cement compositions prepared by the disclosed methods have the pre-hydration level (Wk) equal to or less than 1.5%. The values and preferred values of R1-3 are disclosed herein.
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