Automatic control system for copper converter converting

Abstract

The invention discloses an automatic control system for copper converter converting, which comprises a slag forming end point detection unit and a copper forming end point detection unit, wherein the slag forming end point detection unit is used for online collecting characteristic spectrum emission intensity signals of PbO and PbS of the melt in the copper converter in the slag forming period; the copper forming end point detection unit is used for online collecting gas concentration signals of SO2 in flue gas in a copper converter gas duct in the copper forming period; a data processing unit is used for analyzing and processing the signals collected by the slag forming end point detection unit and the copper forming end point detection unit to judge whether converting reaches the slag forming end point and the copper forming end point, and performs regulation and control to determine whether blowing out is performed. The control system can accurately judge the slag forming end point and the copper forming end point, so that the phenomena such as over-blowing and under blowing can be avoided, the safety production of copper converter converting is ensured, and the efficiency of copper smelting is improved.

Description

technical field [0001] The invention relates to the field of copper concentrate smelting, in particular to an automatic control system for copper converter blowing. Background technique [0002] Copper matte converting mainly adopts PS converter converting technology. At present, 80% of the global mineral crude copper production capacity is using PS converter converting. Matte blowing is carried out in cycles, divided into slag-making period and copper-making period. In the slag-making period, air or oxygen-enriched air is blown into the melt in the furnace from the tuyere, and the air in the matte is stirred by the air. FeS is oxidized to form FeO and SO 2 ; FeO and SiO in the added flux 2 Carry out slagging reaction. Once the slagging reaction is over, the air supply is temporarily stopped and the slagging operation is carried out. During the copper-making period, the white matte (mainly Cu 2 Existing in the form of S) reacts with the oxygen in the blown air to form b...

AI Technical Summary

Problems solved by technology

Manual sampling is easily affected by the mental state of the operator and personal practical experience, resulting in inaccurate judgment of the end point, low hit rate, and easy to cause safety hazards such as overblowing, "cold furnace" or "spray furnace".

At the same time, the hit rate is low, and repeated sampling is required, which forces frequent tilting of the furnace body, and a large amount of smelting waste gas is discharged from the furnace mouth, causing air pollution and affecting the health of operators.

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