利用有机固废与低品位直接还原铁电炉冶炼铁水的方法
By combining submerged arc smelting, long-arc power supply, and organic solid waste powder, the problems of high energy consumption and large carbon emissions in low-grade direct reduced iron smelting have been solved, realizing efficient and low-cost molten iron smelting and resource utilization of organic solid waste.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NORTHEASTERN UNIV CHINA
- Filing Date
- 2026-03-24
- Publication Date
- 2026-07-17
AI Technical Summary
Currently, low-grade direct reduced iron (DRF) has problems such as low metallization rate and high iron oxide content in electric furnace smelting, which leads to increased energy consumption and carbon emissions. Existing methods, such as using carbonaceous reducing agents or hydrogen reducing agents, are costly and do not have economic or environmental advantages.
The process employs a submerged arc smelting system with high-voltage long-arc power supply, combined with bottom blowing agitation and multiple feeding strategies. Organic solid waste powder is used for reduction to form a highly fluid slag system. The organic solid waste powder is then injected through a high-current short-arc power supply to generate hydrogen-rich reducing gas and pyrolytic carbon, which synergistically reduce the molten slag and improve kinetic conditions.
It achieves efficient melting of low-grade direct reduced iron and recycling of organic solid waste, increasing iron recovery rate to over 96% and reducing energy consumption by over 20%, thus providing economic and environmental benefits.
Smart Images
Figure CN121896408B_ABST