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Method for thermal activation of coal gangue and in-situ carbon fixation utilizing waste heat from steel slag
US2025376416A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025376416-A1 |
| Application number | US-202519215610-A |
| Country | US |
| Kind code | A1 |
| Filing date | May 22, 2025 |
| Priority date | Jun 7, 2024 |
| Publication date | Dec 11, 2025 |
| Grant date | — |
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Abstract
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A method for thermal activation of coal gangue and in-situ carbon fixation utilizing waste heat from steel slag is disclosed. By utilizing waste heat from high-temperature molten steel slag, coal gangue is activated to a high pozzolanic activity utilizing the system temperature of a steel slag hot-steaming device, and meanwhile, the CO 2 released in the thermal activation process is captured utilizing the reaction of steel slag with CO 2 to generate stable carbonates, thus achieving permanent carbon sequestration. The present disclosure effectively uses the heat from the hot steel slag discharged from the steelmaking furnace in such a way that the coal gangue is activated while the steel slag undergoes a carbonation reaction, resulting in an increased heat recovery rate during the cooling process of the steel slag.
First claim
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What is claimed is: 1 . A method for thermal activation of coal gangue and in-situ carbon fixation utilizing waste heat from steel slag, wherein by utilizing waste heat from high-temperature molten steel slag, coal gangue is activated to a high pozzolanic activity in a steel slag hot-steaming device utilizing the system temperature of the steel slag hot-steaming device, and meanwhile CO 2 released in the thermal activation process is captured utilizing the reaction of steel slag…
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Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
- C04B20/04Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US2025376416A1 cover?
- A method for thermal activation of coal gangue and in-situ carbon fixation utilizing waste heat from steel slag is disclosed. By utilizing waste heat from high-temperature molten steel slag, coal gangue is activated to a high pozzolanic activity utilizing the system temperature of a steel slag hot-steaming device, and meanwhile, the CO 2 released in the thermal activation process is captured u…
- Who is the assignee on this patent?
- Univ Taiyuan Technology
- What technology area does this patent fall under?
- Primary CPC classification C04B20/04. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Dec 11 2025 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).