System and method for low-carbon electric metallurgy of iron ore
By combining fluidized bed magnetization roasting, reduction acidolysis, and electrometallurgical processes with solar heating and efficient electrolyte circulation, the high carbon emissions and insufficient resource utilization problems in existing iron ore electrometallurgical technologies have been solved, realizing the low-carbon preparation and resource utilization of high-purity iron, and reducing energy consumption and production costs.
CN117947262BActive Publication Date: 2026-07-17INSTITUTE OF PROCESS ENGINEERING CHINESE ACADEMY OF SCIENCES
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- INSTITUTE OF PROCESS ENGINEERING CHINESE ACADEMY OF SCIENCES
- Filing Date
- 2022-11-11
- Publication Date
- 2026-07-17
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Figure CN117947262B_ABST
Abstract
The present application belongs to the field of energy and metallurgy. Specifically, the present application discloses a system and method for low-carbon electric metallurgy of iron ore. The iron concentrate is purified by solid-phase enrichment to reduce the impurity content in the subsequent electrolyte. The acidolysis efficiency is improved by reduction acidolysis to realize low-acid conversion. The resource utilization of acidolysis slag and purified slag and the sulfur element cycle are realized by high-temperature desulfurization. The high-temperature medium generated by a solar furnace is used for heating desulfurization to realize low-carbon energy. High-temperature air is obtained by a sulfur dioxide heat exchanger, and high-temperature air is used for heating acidolysis and electric metallurgy to realize efficient heat utilization. The ferrous sulfate solution valence adjustment, pure iron preparation, sulfuric acid regeneration and oxygen recovery are realized by electric metallurgy. The present application is suitable for large-scale and continuous low-carbon electric metallurgy of iron ore, and has the advantages of high efficiency, low energy consumption, no pollution and ultra-low carbon dioxide emission.
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