Control system for blowing of copper converter

Abstract

The invention discloses a control system for the blowing of a copper converter. The control system comprises a slag forming endpoint detection unit, a copper forming endpoint detection unit and a data processing unit, wherein the slag forming endpoint detection unit is used for acquiring characteristic spectrum emission intensity signals of PbO and PbS in melt in the copper converter on line in a slag forming period; the copper forming endpoint detection unit is used for acquiring a concentration signal of SO2 in the flue gas of the copper converter on line in a copper forming period; the data processing unit is used for performing analytical processing to judge whether the signals acquired by the slag forming endpoint detection unit and the copper forming endpoint detection unit reach slag and copper forming endpoints or not and whether to stop blowing or not. According to the control system, the slag and copper forming endpoints in a blowing process of the copper converter can be accurately judged, so that the phenomena of over-blowing, under-blowing and the like are avoided, the safety production of blowing of the copper converter is ensured, and the copper smelting efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of copper concentrate smelting, in particular to a 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 bl...

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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