Vertical type rotary direct-current electric arc furnace

Abstract

The invention discloses a vertical type rotary direct-current electric arc furnace. The furnace comprises a furnace body, a furnace lid, a negative pole electrode bar, a positive pole electrode bar, an electrode bar lifting mechanism and a furnace body rotating mechanism, wherein the furnace lid is fixedly arranged at the upper end of the furnace body, the negative pole electrode bar and the positive pole electrode bar are fixed on the furnace lid in the vertical direction, the negative pole electrode bar and the positive pole electrode bar are arranged on the electrode bar lifting mechanism and are driven by the electrode bar lifting mechanism to ascend and descend in the vertical direction, and the furnace body is arranged on the furnace body rotating mechanism and is driven by the furnace body rotating mechanism to rotate. The furnace lid of the furnace is provided with double electrodes, so that the melting space is expanded, meanwhile, a negative pole arc and a positive pole arc are used for heating a molten bath, the furnace lid does not move, the furnace body rotates, so that the molten bath is uniformly heated through the arcs, and the melting effect is ensured.

Description

technical field [0001] The invention relates to a direct current electric arc furnace, in particular to a vertical rotary direct current electric arc furnace. Background technique [0002] DC electric arc furnace converts three-phase alternating current into single-phase direct current through thyristor rectification, and generates an arc on the metal charge between the furnace bottom electrode (anode) and graphite electrode (cathode) for smelting. The main difference between the DC electric arc furnace and the AC electric arc furnace equipment: the addition of rectification devices, the change of three top graphite electrodes into one, and the addition of furnace bottom electrodes, etc. Among them, the setting of furnace bottom electrode is the biggest feature of DC electric arc furnace. Compared with the traditional AC electric arc furnace, the main advantages of the DC electric arc furnace are: the arc is stable and concentrated, the molten pool is well stirred, the temp...

AI Technical Summary

Problems solved by technology

The disadvantage of this solution is that, on the one hand, the bottom of the furnace uses conductive anodes, which is technically difficult, easy to wear, and has hidden dangers of leakage at the bottom; on the other hand, the range of arc radiation is limited, which limits the diameter of the DC arc furnace and limits equipment handling quantity

Images