System for preparing high-purity iron powder by utilizing renewable energy based on multi-stage fluidization reduction

Through multi-stage fluidization reduction and plasma heating technology, high-purity iron powder is produced using biomass natural gas, which solves the problems of high carbon emissions and low purity in traditional iron powder preparation methods, and achieves low-carbon and efficient iron powder production.

CN223222468UActive Publication Date: 2025-08-15中源美城(辽宁)科技发展有限公司 +2
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Patent Information

Application Number
CN202422382723.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-29
Publication Date
2025-08-15
Estimated Expiration
2034-09-29

AI Technical Summary

Technical Problem

Traditional iron powder production methods rely on fossil fuels, resulting in high carbon emissions and difficult purity and quality control, which cannot meet the needs of environmentally friendly and high-performance materials.

Method used

Multi-stage fluidization reduction technology is used to combine biomass natural gas and plasma generators and heating technology, and high-purity iron powder is produced using renewable energy, including multi-stage fluidization reduction components, circulating gas supply and recovery components and nitrogen supply components. The iron powder is finely processed through biomass reducing gas preparation, purification and multi-stage fluidization reduction reactions.

Benefits of technology

It has achieved efficient, low-carbon and clean production of high-purity iron powder, with a TFe grade of more than 98%, meeting the needs of high-end manufacturing.

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Abstract

The utility model relates to the cross technical field of green metallurgical engineering and new energy utilization, and particularly provides a system for preparing high-purity iron powder by utilizing renewable energy based on multi-stage fluidization reduction, which comprises a multi-stage fluidization reduction component, a recycle gas supply and recovery component and a nitrogen supply component, the multi-stage fluidization reduction assembly comprises a circulating fluidization preheater, a first-stage circulating fluidization reduction reactor, a second-stage circulating fluidization reduction reactor and a circulating fluidization cooler which are connected in sequence; the circulating gas supply assembly comprises a first gas mixing device, and a waste heat boiler, a circulating gas purification system, a circulating gas MDEA decarburization system and a circulating gas heater which are connected in sequence; the nitrogen supply assembly comprises a nitrogen storage device and a cooling gas purification system. According to the utility model, fluidized gas-based reduction and plasma generator heating technologies are combined, and biomass natural gas is used as reducing gas, so that high-efficiency, low-carbon and clean production of reduced iron powder is realized.
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