Method for producing phosphoric acid and calcium sulphate quality suitable for a clinker process for the commercial and industrial utilization of calcium sulphate
US-12583747-B2 · Mar 24, 2026 · US
Method for producing hydraulic composition
US2022315486A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022315486-A1 |
| Application number | US-202017608787-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 9, 2020 |
| Priority date | May 31, 2019 |
| Publication date | Oct 6, 2022 |
| Grant date | — |
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Abstract
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A clinker that has a total content of C3A and C4AF of 22 to 40 mass %, calculated according to Bogue's formulas, and an iron modulus of 0.8 to 1.3 is pulverized with gypsum. Alternatively, the clinker after pulverization is mixed with gypsum powder. A pulverization agent comprising N-methyl-di-ethanol-amine and/or di-ethanol-isopropanol-amine is used in the pulverization.
First claim
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What is claimed is: 1 . A method for producing a hydraulic composition, performing a step for pulverizing a clinker having a total content of C 3 A and C 4 AF of 22 to 40 mass %, calculated according to Bogue's formulas, and an iron modulus of 0.8 to 1.3, with gypsum, or alternatively, mixing gypsum powder and said clinker after being pulverized, wherein a pulverization agent comprising N-methyl-di-ethanol-amine and/or di-ethanol-isopropanol-amine is used in the pulverization. 2 . The method for producing the hydraulic composition according to claim 1 , being characterized in that the total content of N-methyl-di-ethanol-amine and di-ethanol-isopropanol-amine is 0.001 mass part to 0.05 mass part to 100 mass parts of said clinker. 3 . The method for producing the hydraulic composition according to claim 2 , being characterized in that the total content of N-methyl-di-ethanol-amine and di-ethanol-isopropanol-amine is 0.01 mass part to 0.04 mass part to 100 mass parts of said clinker. 4 . The method for producing the hydraulic composition according to claim 1 , being characterized in that said pulverization agent substantially consists of at least one member selected from the group of N-methyl-di-ethanol-amine and di-ethanol-isopropanol-amine. 5 . The method for producing the hydraulic composition according to claim 4 , being characterized in that said pulverization agent consists of at least one member selected from the group of N-methyl-di-ethanol-amine and di-ethanol-isopropanol-amine. 6 . The method for producing the hydraulic composition according to claim 1 , being characterized in that N-methyl-di-ethanol-amine is used as said pulverization agent.
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- What does patent US2022315486A1 cover?
- A clinker that has a total content of C3A and C4AF of 22 to 40 mass %, calculated according to Bogue's formulas, and an iron modulus of 0.8 to 1.3 is pulverized with gypsum. Alternatively, the clinker after pulverization is mixed with gypsum powder. A pulverization agent comprising N-methyl-di-ethanol-amine and/or di-ethanol-isopropanol-amine is used in the pulverization.
- Who is the assignee on this patent?
- Tokuyama Corp
- What technology area does this patent fall under?
- Primary CPC classification C04B7/04. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Oct 06 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).