Novel Anshan type iron ore beneficiation process

By adopting new ore dressing processes in Anshan iron ore ore dressing, including multiple screening and selection steps, the problems of coarse grinding particle size, large mill selection, large power consumption, and increased ore dressing costs in traditional processes are solved, and an efficient and low-cost ore dressing process is achieved.

CN119657323APending Publication Date: 2025-03-21JIANPING COUNTY ZHENGTONG MINING CO LTD
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Patent Information

Application Number
CN202510017553.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-06
Publication Date
2025-03-21

AI Technical Summary

Technical Problem

The traditional step grinding process flow has problems such as coarse grinding particle size, large mill selection, large power consumption, and increased ore dressing cost in Anshan iron ore ore dressing.

Method used

The new Anshan iron ore ore ore dressing process is adopted, including crushing, screening, large-block dry selection, secondary screening, fine crushing, wet pre-selecting, grinding, weak magnetic coarse selection, grading, weak magnetic selection, tailings recovery, concentrate concentration and dehydration. Through multiple screening and selection, the ore dressing efficiency can be improved and the cost of ore dressing is reduced.

Benefits of technology

Effectively simplify the ore crushing process, reduce the abrasive particle size and energy consumption, improve ore dressing efficiency, reduce ore dressing costs, and achieve the goal of zero emission of ore dressing water.

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Abstract

The invention discloses a novel mineral processing technology for Anshan type iron ore. The method comprises the specific steps that raw ore is subjected to a three-section two-closed-circuit crushing and screening process, and then qualified materials are obtained; after powder is subjected to wet-type pre-concentration, concentrate enters a grinding machine to be subjected to ore grinding operation, materials discharged by the grinding machine are subjected to weak magnetic roughing, and tailings can be thrown early. And the concentrate is graded through a hydrocyclone set and a high-frequency screen to form closed-loop grinding, qualified materials enter two sections of weak magnetic concentration and electromagnetic elutriation, final concentrate is obtained through filtering, magnetic tailings of all the sections are combined for tailings recovery, and the final tailings are subjected to dry discharging operation to obtain tailings and tail mud products. The combined beneficiation process of crushing, screening, large block dry separation, secondary screening, high-pressure roller grinding, wet-type pre-separation, grading, ore grinding, low-intensity magnetic separation, concentration, filtering and the like is adopted, qualified iron ore concentrate can be obtained, and magnetic tails of all sections can be used as building raw materials such as cement or gravel aggregate. The process is simplified, the milling grade is improved, the system production capacity is improved, the beneficiation cost is reduced, and the economic benefit of a beneficiation plant is increased.
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