Invention Grant
- Patent Title: Hydraulic binder composition using rapidly-cooled steelmaking reduced slag powder, and method of preparing the same
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Application No.: US14604874Application Date: 2015-01-26
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Publication No.: US10065892B2Publication Date: 2018-09-04
- Inventor: Jin-Man Kim , Sun-Mi Choi , Ji-Ho Kim
- Applicant: KONGJU NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION
- Applicant Address: KR
- Assignee: Jin-Man Kim
- Current Assignee: Jin-Man Kim
- Current Assignee Address: KR
- Agency: Park & Associates IP Law, P.C.
- Priority: KR10-2012-0081388 20120725
- Main IPC: C04B28/14
- IPC: C04B28/14 ; C04B5/00 ; C21B3/08

Abstract:
Disclosed are a hydraulic binder composition using rapidly-cooled steelmaking reduced slag powder and a method of preparing the same. More particularly, the rapidly-cooled steelmaking reduced slag (RC-LFS) powder is obtained by spraying and scattering gas at a high pressure and high speed onto electric furnace smelting reduction slag, which is one of the by-products generated during iron smelting performed in an ironworks, and quickly cooling and pulverizing the slag. The initial high hydration heat reaction and initial setting of the rapidly-cooled steelmaking reduced slag (RC-LFS) powder are delayed to ensure workability. A retardant and gypsum are mixed into the rapidly-cooled steelmaking reduced slag (RC-LFS) powder so as to activate the generation of needle-shaped ettringite and to thus develop the initial and long-term strength, and therefore the rapidly-cooled steelmaking reduced slag (RC-LFS) powder of the present invention can be used as a substitute for ordinary Portland cement.
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