Processing method
US-2020354811-A1 · Nov 12, 2020 · US
Multi-source solid waste recycling method based on composition design for calcium-silicon-aluminum-magnesium oxide
US2025075290A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025075290-A1 |
| Application number | US-202318513670-A |
| Country | US |
| Kind code | A1 |
| Filing date | Nov 20, 2023 |
| Priority date | Sep 1, 2023 |
| Publication date | Mar 6, 2025 |
| Grant date | — |
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Abstract
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A multi-source solid waste recycling method based on composition design for calcium-silicon-aluminum-magnesium oxide includes collecting multi-source solid waste composition data; calculating and designing compositions of calcium oxide, silicon oxide, aluminum oxide and magnesium oxide units to obtain an inorganic non-metallic raw material with a target composition; and melts the raw material into slag, and uses carbon, metallic aluminum, aluminum nitride, aluminum carbide, silicon nitride and silicon carbide in the multi-source solid waste as reducing agents. The slag provides a high-temperature homogeneous reaction environment and serves as a “solvent” for reactants, the reducing agents reduce valuable metals in the slag to obtain an alloy, thereby achieving recovery of the valuable metals, and the slag is used for the inorganic non-metallic material in a high-value mode.
First claim
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1 . A multi-source solid waste recycling method, comprising: collecting multi-source solid waste composition data to determine contents of calcium oxide, silicon oxide, aluminum oxide and magnesium oxide in the multi-source solid wastes; determining addition amount of the multi-source solid wastes as inorganic non-metallic raw materials to prepare an inorganic non-metallic material with a target composition of calcium oxide, silicon oxide, aluminum oxide and magnesium oxide; and melting the multi-source solid wastes into slag and reducing metals in the slag by a reducing agent in the multi-source solid wastes to obtain an alloy and the inorganic non-metallic material, wherein determining addition amount of the multi-source solid wastes as inorganic non-metallic raw materials to prepare an inorganic non-metallic material with a target composition of calcium oxide, silicon oxide, aluminum oxide and magnesium oxide comprises: determining a main mineral phase in the inorganic non-metallic material, determining weight percentage ranges of CaO, SiO 2 , Al 2 O 3 and MgO of the main mineral phase, and selecting two or more multi-source solid wastes as the inorganic non-metallic raw materials; wherein determining addition amount of the multi-source solid wastes comprises calculating the addition amount of the multi-source solid wastes by a composition matrix: [ P 1 P 2 … P n ] [ 1 Q 1 - CaO Q 1 - SiO 2 Q 1 - Al 2 O 3 Q 1 - MgO 1 Q 2 - CaO Q 2 - SiO 2 Q s - Al 2 O 3 Q 2 - MgO ⋮ ⋮ ⋮ ⋮ ⋮ 1 Q n - CaO Q n - SiO 2 Q n - Al 2 O 3 Q n - MgO ] * 1 ∑ i
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- What does patent US2025075290A1 cover?
- A multi-source solid waste recycling method based on composition design for calcium-silicon-aluminum-magnesium oxide includes collecting multi-source solid waste composition data; calculating and designing compositions of calcium oxide, silicon oxide, aluminum oxide and magnesium oxide units to obtain an inorganic non-metallic raw material with a target composition; and melts the raw material i…
- Who is the assignee on this patent?
- Univ Beijing Science & Technology
- What technology area does this patent fall under?
- Primary CPC classification C22C1/02. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Mar 06 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).