A method for reducing energy consumption by optimizing production of a silicon-iron ore heat furnace in coordination with natural power factor and secondary voltage

By optimizing the coordinated matching of electrical and process parameters in stages, the problems of blind voltage control and unstable furnace conditions in ferrosilicon submerged arc furnaces were solved, achieving synchronous improvement of natural power factor and secondary voltage, reducing power consumption and improving production efficiency.

CN122408475APending Publication Date: 2026-07-17GANSU JIU STEEL GRP HONGXING IRON & STEEL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GANSU JIU STEEL GRP HONGXING IRON & STEEL CO LTD
Filing Date
2026-05-29
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In traditional ferrosilicon submerged arc furnace smelting, the secondary voltage regulation is blind, the natural power factor is low, resulting in high power consumption, unstable furnace conditions, and the inability to achieve full-process coordinated optimization.

Method used

By optimizing the coordinated matching of electrical parameters, electrode operation, and process parameters in stages, including voltage boosting and furnace condition adaptation, electrode operation coordination, refined material surface maintenance, and dynamic compensation adjustment, combined with high-precision monitoring and risk control, a standardized operation system for the entire process is formed.

Benefits of technology

It has achieved a stable increase in natural power factor to above 0.7, optimization of secondary voltage to 215V, reduction of smelting power consumption by 300-500kWh/t, increase of daily output per furnace by 6.2 tons, reduction of furnace mouth temperature by more than 30℃, reduction of furnace abnormalities, and long-term stable operation.

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Abstract

The application discloses a method for reducing energy consumption by optimizing production of a natural power factor and secondary voltage of a ferrosilicon electric arc furnace, and belongs to the technical field of ferrosilicon smelting. The method solves the problems of low power factor, blind secondary voltage regulation, high power consumption and poor furnace stability in the traditional process. The method comprises three-stage operation methods. The first stage is a voltage lifting and furnace condition adapting stage, the second stage is a voltage stabilizing and parameter coordinating optimizing stage, and the third stage is a parameter solidifying and efficiency enhancing stage. The method takes the improvement of the operating resistance of the electric arc furnace as the core, controls the whole process in stages, constructs a benign smelting cycle of "high voltage-low current-high power factor", realizes the synchronous optimization of the natural power factor and the secondary voltage, and greatly improves the economy and production stability of the ferrosilicon smelting.
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