Invention Application
- Patent Title: Process and Apparatus for Manufacture of Portland Cement
- Patent Title (中): 波特兰水泥制造工艺及装置
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Application No.: US15039693Application Date: 2014-11-19
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Publication No.: US20170050883A1Publication Date: 2017-02-23
- Inventor: Mark Sceats
- Applicant: Calix Ltd.
- Applicant Address: AU Pymble, New South Wales
- Assignee: Calix Ltd.
- Current Assignee: Calix Ltd.
- Current Assignee Address: AU Pymble, New South Wales
- Priority: AU2013904639 20131129
- International Application: PCT/AU2014/001054 WO 20141119
- Main IPC: C04B7/43
- IPC: C04B7/43

Abstract:
A method of manufacture of Portland cement clinker is described in a dry process that captures the carbon dioxide emitted from the calcination of carbonate minerals, principally limestone. The process uses an indirectly heated, counter-flow reactor to pre-heat and calcine the cement meal to produce a separate calcined meal and carbon dioxide gas stream, with external heat being provided by the combustion of a secondary fuel stream with pre-heated air. This calcined meal is injected into the conventional rotary kiln, where the hot flue gas from combustion of the primary fuel with pre-heated air is used to fuse, react and sinter the powders to form granules of cement clinker. The clinker and carbon dioxide streams are cooled by the air pre-heaters.
Public/Granted literature
- US10570061B2 Process for manufacture of Portland cement Public/Granted day:2020-02-25
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