Cooler for cooling clinker and method for operating a cooler for cooling clinker
US-12162808-B2 · Dec 10, 2024 · US
Production method for cement clinker and cement clinker powder
US12534402B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12534402-B2 |
| Application number | US-202017442658-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 13, 2020 |
| Priority date | Mar 27, 2019 |
| Publication date | Jan 27, 2026 |
| Grant date | Jan 27, 2026 |
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Abstract
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Portland cement clinker that includes C 3 A and C 4 AF in total from 22 to 40 mass % calculated by Bogue's formulas and has an iron modulus (I.M.) of 0.8 to 1.3 is produced. The burned raw materials are annealed at a cooling rate of 20 degree Celsius or lower at least to 1200 degree Celsius so that the lightness of the cement clinker is made high. When annealing till lower temperatures, the lightness value becomes generally higher, but the effect becomes negligible lower at 1000 degree Celsius. Therefore, the raw materials are quenched at 1000 degree Celsius and lower for improving the productiveness.
First claim
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What is claimed is: 1 . A production method for Portland cement clinker including C 3 A and C 4 AF in total from 22 to 40 mass % calculated by Bogue's formulas and having an iron modulus (I.M.) of 0.8 to 1.3, carrying out a step for cooling raw materials of the Portland cement clinker after burning the raw materials at 1300 to 1400 degree Celsius, being characterized by, in the step for cooling, cooling the raw materials after the burning at a cooling rate of 20 degree Celsius per minute or lower, to a temperature at or below 1200 degree Celsius and then quenching the raw materials from a temperature at or above 1000 degree Celsius, wherein the burning of the raw materials is performed in a rotary kiln, and the cooling of the raw materials is performed in a clinker-cooler.
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- What does patent US12534402B2 cover?
- Portland cement clinker that includes C 3 A and C 4 AF in total from 22 to 40 mass % calculated by Bogue's formulas and has an iron modulus (I.M.) of 0.8 to 1.3 is produced. The burned raw materials are annealed at a cooling rate of 20 degree Celsius or lower at least to 1200 degree Celsius so that the lightness of the cement clinker is made high. When annealing till lower temperatures, the lig…
- Who is the assignee on this patent?
- Tokuyama Corp
- What technology area does this patent fall under?
- Primary CPC classification C04B7/47. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 27 2026 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).