Method for comprehensive utilization of medium-lean oxidized ore suspension magnetization roasting

By using suspension magnetization roasting and multi-stage grinding and reverse flotation processes to process medium-lean oxide ores, the problems of incomplete reduction and poor equipment stability have been solved, achieving efficient utilization of medium-lean iron ore and enrichment of rare earth ores, and improving the stability of equipment operation and energy utilization.

CN116397095BActive Publication Date: 2026-04-10SHANGHAI MILESTONE TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI MILESTONE TECH CO LTD
Filing Date
2023-04-14
Publication Date
2026-04-10

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Abstract

A kind of lean oxidized ore suspension magnetization roasting comprehensive utilization method, it is related to a kind of lean oxidized ore suspension magnetization roasting to realize the method of efficient utilization of lean iron ore, also enriches rare earth ore.It includes the following steps: step 1: crushing grinding operation, step 2: pre enrichment operation, step 3: suspension magnetization roasting operation, step 4: multi-stage grinding operation, step 5: reverse flotation operation, finally obtain the iron grade 65% or more, iron recovery rate 80% or more, F content less than 0.30% iron concentrate index.The present application uses gas to suspend magnetization roasting of ore, compared with static roasting, not only high heat and mass transfer efficiency, but also solve the problem of incomplete reduction, low equipment processing capacity, high operation cost and other problems in static roasting process.The process flow of the present application is simple, equipment and system runs stably, large processing capacity, low unit energy consumption and cost, product properties are easy to control, easy to realize equipment large-scale.
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Patent Citations

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