Beneficiation method of sulfur-containing magnetite

By detecting the particle size and mineral content of sulfur-containing magnetite and dynamically adjusting the magnetic field strength of the magnetic separation process, the problem of incomplete separation of magnetite and sulfur minerals was solved, achieving efficient separation of pyrite and iron minerals and reducing resource waste and production costs.

CN121490883APending Publication Date: 2026-02-10WISCO RESOURCES GRP JINSHANDIAN MINING CO LTD +1
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Patent Information

Application Number
CN202511192638.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-25
Publication Date
2026-02-10

AI Technical Summary

Technical Problem

Existing technologies are insufficient to effectively separate magnetite and sulfur minerals in sulfur-containing magnetite, leading to a decline in iron concentrate quality and resource waste. Furthermore, subsequent processes require additional desulfurization and iron removal steps, increasing production costs and reducing overall process efficiency.

Method used

By detecting the particle size, magnetite and sulfur mineral content of sulfur-containing magnetite, the magnetic field strength of the magnetic separation process is dynamically adjusted. The optimal magnetic field strength is calculated using a preset algorithm to achieve selective separation of pyrite minerals. Closed-loop control is adopted to ensure that the magnetic field strength matches the ore characteristics, and multiple processes are combined for synergistic processing.

Benefits of technology

It improves the separation efficiency of magnetite and sulfur minerals, reduces the sulfur residue rate in iron concentrate and the iron loss rate in tailings, reduces resource waste and production costs, and provides an efficient pyrite mineral separation scheme.

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Abstract

The invention discloses a sulfur-containing magnetite beneficiation method which specifically comprises the following steps: S1, raw material preparation: crushing sulfur-containing magnetite to obtain small-particle sulfur-containing magnetite; s2, physicochemical property determination: detecting the particle size of the small-particle sulfur-containing magnetite, the content of magnetite in the small-particle sulfur-containing magnetite and the content of sulfur minerals in the small-particle sulfur-containing magnetite; s3, magnetic separation: according to the physicochemical properties of the small-particle sulfur-containing magnetite detected in the step S2, automatically controlling the magnetic field intensity of a magnetic separation process through a controller, and carrying out magnetic separation to obtain magnetite and sulfur-containing ore; the magnetic field intensity of the magnetic separation process is dynamically adjusted according to the iron ore particle size of the sulfur-containing magnetite, the magnetite content in the sulfur-containing magnetite and the sulfur mineral content, the trends of iron minerals and sulfur minerals are accurately controlled, optimal adjustment of the element trends is achieved, and the recovery rate of iron and sulfur is increased.
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