一种钠化提钒渣氢基直接还原制备金属化球团的方法
By combining high-pressure roller milling, acid leaching, and oxidative roasting with hydrogen-based vertical furnace reduction, the problem of pelletizing caused by alkali metal and aluminosilicate impurities in sodium vanadium extraction slag was solved. This method achieved efficient separation and high recovery of iron and titanium, reduced energy consumption and carbon emissions, and provided high-quality furnace feed for blast furnaces or electric furnaces.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CENT SOUTH UNIV
- Filing Date
- 2024-01-25
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, the high content of alkali metals and aluminosilicate impurities in sodium vanadium extraction slag leads to severe pellet reduction and pulverization, poor titanium-iron separation effect, low resource recovery rate, and high energy consumption and CO2 emissions in blast furnace method or pre-reduction-melting method, making it difficult to achieve effective utilization.
By combining high-pressure roller milling, acid leaching, and oxidative roasting with hydrogen-based vertical furnace reduction, alkali metals and aluminosilicate impurities in vanadium extraction slag are removed. Hydrogen-based reducing agents and electromagnetic induction heating technology are used to achieve effective separation and efficient reduction of iron and titanium.
It significantly improves the grade and recovery rate of iron and titanium in vanadium extraction slag, reduces production costs and carbon emissions, provides high-quality metallized pellets for blast furnace or electric furnace smelting, and simplifies the process.
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Figure CN117737331B_ABST