Method and system for controlling electrode insertion depth of submerged arc furnace

Abstract

The invention discloses a method for controlling the insertion depth of an electrode of a submerged arc furnace, and the method comprises the following specific steps: carrying out a multi-furnace test, and determining an empirical value M0; after the empirical value M0 is determined, the submerged arc furnace is put into production, and the corresponding electrode weight is calculated as the actually measured mass M1; and comparing the actually measured mass M1 with the empirical value M0. The method has the advantages that the insertion depth of the electrode can be controlled to be the optimal insertion depth by measuring the pressure intensity on the hydraulic loop of the lifting oil cylinder, measuring the measured weight of the electrode and comparing the measured weight with an empirical value, meanwhile, the yield of the submerged arc furnace is guaranteed, and a better reference basis is provided for production personnel to judge the furnace condition. Moreover, by controlling the lifting of the electrodes, the actually measured masses of the three-phase electrodes can be the same, so that the three-phase electrodes can be inserted into the same depth, the three-phase electrodes can do work at the same part at the same time and have a mutual synergistic effect, the three small crucibles are communicated into a whole to form a larger crucible, and the yield of the submerged arc furnace can be further increased.

Description

Technical field: [0001] The invention relates to the technical field of submerged arc furnace control, in particular to a method and system for controlling the insertion depth of submerged arc furnace electrodes. Background technique: [0002] Silicon-manganese alloy is an alloy composed of manganese, silicon, iron and a small amount of carbon and other elements. It is a ferroalloy with wide application and large output. Submerged arc furnace is the main equipment for smelting silicon-manganese alloy. It mainly consists of furnace shell, furnace cover, furnace lining, short net, water cooling system, smoke exhaust system, dust removal system, electrodes, electrode pressing and lifting system, loading and unloading system, and holding mechanism. , Burn through devices, hydraulic systems, submerged arc furnace transformers and various electrical equipment. Among them, the electrode pressing and lifting system includes a pressing system and a lifting system. The lifting system...

AI Technical Summary

Problems solved by technology

Of course, the insertion depth of the electrode should not be too deep. If the electrode is inserted too deep, the loss of the furnace bottom will be large, causing frequent damage to the equipment and increasing the cost;

[0004] The current method of judging the insertion depth of the electrode is roughly divided into two types. One is to judge the depth of the electrode according to the secondary voltage, secondary current and the resistance of the charge. However, due to many factors affecting the secondary voltage and secondary current, such as charge Ratio, transformer gear and primary voltage, etc., resulting in large measurement errors and great uncertainty

The other is to judge the electrode depth according to the relationship between the position of the electrode holder and the electrode consumption. However, there are also many reasons that affect the electrode consumption, such as the quality and proportion of the electrode paste, the proportion of the furnace charge, etc. There are also many Uncertainty

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