Converter steel slag grading efficient resource utilization method

By performing roller crushing, pressurized hot curing, rod milling and impurity removal processes on converter steel slag, combined with grading screening and magnetic separation, the problems of low efficiency, poor stability and resource waste in converter steel slag processing have been solved, realizing the efficient resource utilization of all components and creating significant economic and environmental benefits.

CN122256583APending Publication Date: 2026-06-23GUANGXI LIUGANG ENVIRONMENTAL PROTECTION CO LTD
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Patent Information

Application Number
CN202610438977.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-03
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing converter slag treatment technologies suffer from problems such as low processing efficiency, poor product stability, insufficient resource utilization, and failure to meet environmental protection and energy consumption standards, making it difficult to achieve full-component, high-value utilization.

Method used

Steel slag is pretreated by roller crushing, pressurized hot curing, rod milling and impurity removal, combined with mobile five-layer vibrating screen grading, and permanent magnet drum and wet magnetic separators are used for product adaptation treatment. Waste heat is recovered for drying, realizing full particle size classification and multi-scenario directional modification.

Benefits of technology

It significantly improves processing efficiency, enhances product stability, enables the full utilization of resources, reduces energy consumption, minimizes environmental pollution, and creates significant economic and social benefits.

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Abstract

The invention discloses a converter steel slag grading efficient resource utilization method which comprises the following steps: (1) converter steel slag pretreatment: liquid converter steel slag is sequentially subjected to rolling crushing, hot braising under pressure, rod milling refining and impurity removal to obtain pretreated steel slag; (2) grading screening: grading the pretreated steel slag by adopting a movable five-layer vibrating screen; (3) carrying out adaptive treatment on a product, wherein the product of 16-63 mm is used as a railway macadam ballast; products of 5-10 mm and 10-15 mm are used as road asphalt surface layer aggregates; and (4) waste water and dust treatment and metal and waste heat recovery treatment are carried out. The treatment efficiency is greatly improved, the product stability is remarkably enhanced, the environmental protection performance is outstanding, waste heat utilization and energy consumption are optimized, the resource utilization rate and the additional value are high, and the social benefit is remarkable.
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