A method for manufacturing low-carbon nickel-increasing core-shell particles for stainless steel smelting
By preparing three-layer low-carbon nickel-enriched core-shell particles, the safety hazards and low nickel recovery rate of direct NiO alloying in stainless steel smelting were solved, achieving simplified production process, reduced energy consumption and carbon emissions, and improved nickel yield.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- OMAIJINGKE TECHNOLOGY (TANGSHAN) CO LTD
- Filing Date
- 2026-06-05
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, direct alloying of NiO in stainless steel smelting presents problems such as dust explosion hazards, difficulty in controlling reaction splashes, low nickel recovery rate, and large fluctuations in residual composition.
A low-carbon nickel-enhanced core-shell particle manufacturing method is adopted, which involves preparing a three-layer structure of nickel-enhanced core-shell particles by preparing a reaction heating core, a coating intermediate transition layer, and a core-shell outer layer. The particles are then dried and sintered using mechanical processing, avoiding high-temperature smelting and electrolytic reduction processes.
This approach simplifies the production process, reduces energy consumption and carbon emissions, increases nickel yield, and ensures a stable and controllable reaction process. It also avoids dust explosions and reactor blockages, thereby reducing production costs and carbon emissions.
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