Control method and control system for scrap copper smelting furnace based on image analysis

Abstract

The invention discloses a control method and a control system for a scrap copper smelting furnace based on image analysis. By collecting a color image of a copper product in a scrap copper power-frequency smelting process, extracting the tone of the color image and quickly estimating the copper content of the copper product, a smelting product can be timely judged whether to meet the requirement of a set value, the problem of time delay of offline detection of the copper content can be solved, the electric consumption used for insulation in an offline detection process can be remarkably reduced, and the time of smelting scrap copper in each furnace can be also shortened; and meanwhile, by collecting an image of smoke in the power-frequency smelting furnace in real time, the set value of the rotary speed of a draught fan is estimated in real time by a brightness index and a background detail fuzzy index of the smoke image, and the rotary speed of the draught fan is automatically controlled. Therefore, the heat energy loss of the smelting furnace can be reduced, the utilization efficiency of heating electric energy can be improved, and the fan electric consumption caused by constant high-speed running of the draught fan can be also reduced, thereby further saving the electric energy.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a control method and a control system for a scrap copper smelting furnace based on image analysis. Background technique [0002] Copper and copper alloys are indispensable and important raw materials in the development of the national economy, and reducing energy consumption in the smelting process is of great strategic significance for improving my country's energy utilization efficiency. In recent years, the rapid economic development has made the gap between the supply and demand of copper mineral resources continue to expand. Smelting scrap copper to obtain recycled copper and copper alloys not only reduces the dependence on copper ore resources, but also improves the utilization efficiency of precious metal resources in my country. Due to the relatively simple process, the power frequency smelting technology for smelting scrap copper has been greatly promoted ...

AI Technical Summary

Problems solved by technology

Therefore, if the frequency conversion speed controller is not used for the speed regulation of the induced draft fan, energy saving will not be realized.

[0007] Under the condition that the induced draft fan does not need to run at high speed, if it is kept running at a constant high speed, not only the induced draft fan itself wastes a lot of electric energy, but also takes away a large amount of heat used for melting and heating, prolonging the time of the melting process and causing power frequency heating Huge waste of electric energy; at the same time, the second half of the smoke exhaust channel is in a constant high wind pressure environment, which will reduce the service life of the smoke recovery bag

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