Cement having stress-indicating properties
US-10620065-B2 · Apr 14, 2020 · US
Composite mineralizers/fluxes for the production of alite/calcium sulfoaluminate clinkers
US12503393B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12503393-B2 |
| Application number | US-202318208222-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 9, 2023 |
| Priority date | Jan 30, 2020 |
| Publication date | Dec 23, 2025 |
| Grant date | Dec 23, 2025 |
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- Title
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Abstract
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A cement clinker composition incorporates calcium fluoride and iron oxide to reduce firing temperatures and increase strength. High fly ash, aluminum dross, aluminum scrap, high aluminum clays and combinations thereof may also be substituted for bauxite in the cement clinker composition.
First claim
Opening claim text (preview).
What is claimed is: 1 . A cement clinker composition, comprising: 20-35 wt % C 3 S; 40-55 wt % C 4 A 3 Ś; 10-25 wt % C 2 S; 2-6 wt % C 4 AF; and 0.7-0.85 wt % CaF 2 as present in fluorellestadite and fluormayenite clinker phases fired at 1200-1300° C. 2 . The cement clinker of claim 1 , further including between about 0.5-5 wt % Fe 2 O 3 . 3 . The cement clinker of claim 2 , further including between about 10-35 wt % of a bauxite substitute selected from a group consisting of high fly ash alumina, aluminum dross, aluminum scrap, high alumina clays and combinations thereof. 4 . The cement clinker of claim 1 , further including between about 10-35 wt % of a bauxite substitute selected from a group consisting of high fly ash alumina, aluminum dross, aluminum scrap, high alumina clays and combinations thereof. 5 . The cement clinker composition of claim 1 , including: 1-4 wt % C 4 AF. 6 . The cement clinker of claim 5 , further including between about 10-35 wt % of a bauxite substitute selected from a group consisting of high fly ash alumina, aluminum dross, aluminum scrap, high alumina clays and combinations thereof. 7 . A cement clinker composition, comprising between about 0.7 and about 0.85 wt % CaF 2 and between about 0.5 and about 5.0 wt % Fe 2 O 3 and after firing at between about 1200° C. and 1300° C. including between about 20 and about 35 wt % alite and between about 40 and about 55 wt % calcium sulfoaluminate. 8 . The cement clinker of claim 7 , further including between about 10-35 wt % of a bauxite substitute selected from a group consisting of high fly ash alumina, aluminum dross, aluminum scrap, high alumina clays, kaolin, metakaolin, 1:1 silica to alumina clays and combinations thereof.
Assignees
Inventors
Classifications
Calcium aluminosulfate cements, e.g. cements hydrating into ettringite · CPC title
Burning; Melting · CPC title
Acids or salts thereof · CPC title
Oxides, Hydroxides · CPC title
Production of cement, e.g. improving or optimising the production methods; Cement grinding · CPC title
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Frequently asked questions
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- What does patent US12503393B2 cover?
- A cement clinker composition incorporates calcium fluoride and iron oxide to reduce firing temperatures and increase strength. High fly ash, aluminum dross, aluminum scrap, high aluminum clays and combinations thereof may also be substituted for bauxite in the cement clinker composition.
- Who is the assignee on this patent?
- Univ Kentucky Res Found
- What technology area does this patent fall under?
- Primary CPC classification C04B7/323. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Dec 23 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).