Power-transmission smelting method and system for calcium carbide furnace with three-phase multi-extruded-graphite-electrode layout

Abstract

The invention discloses a power-transmission smelting method and system for a calcium carbide furnace with a three-phase multi-extruded-graphite-electrode layout. Each phase of a transformer secondary-side three-phase terminal is divided into at least two electrode terminals which are connected in parallel, and each electrode terminal is connected with a high-quality extruded graphite electrode; all the high-quality extruded graphite electrodes penetrate into the furnace from the top of a furnace lid of the calcium carbide furnace, any two adjacent high-quality extruded graphite electrodes are out of phase, three out-of-phase high-quality extruded graphite electrodes are uniformly distributed to form an equilateral triangle, three-phase multiply high-quality extruded graphite electrodes are distributed uniformly and reasonably in the furnace and transmit electricity to do work, the high-temperature melting zone and the area for producing calcium carbide liquid through a reduction reaction in the furnace are enlarged, coverage areas intersect with each other and are overlapped and communicated with each other, the calcium carbide liquid can be discharged easily, electric energy and electrode consumption are greatly saved, and accidents caused by the product quality problem of conductive electrodes are thoroughly avoided.

Description

Technical field: [0001] The invention relates to a large-capacity calcium carbide submerged-arc furnace smelting method using graphite electrodes, in particular to a three-phase multi-graphite electrode layout large-capacity calcium carbide furnace power transmission smelting method and system. Background technique: [0002] At present, most of the calcium carbide smelting industry still uses self-baking electrodes for power supply, and self-baking electrodes and electrode pastes are primary products of carbon. In accordance with the national policy on energy saving and emission reduction, this production process should be a controlled development mode. In the production of self-baking electrodes, there will be accidents such as soft breakage, oil flow, segregation, hard breakage, cracks, falling blocks, over-burning, and hanging materials. It is the soft break and oil flow that can cause fire and explosion, directly threatening the safety of operators and equipment. In the...

AI Technical Summary

Problems solved by technology

In the past, high-quality and large-size graphite electrodes of φ600~φ800mm were expensive due to the complex process technology. Everyone only wanted to promote the use of low-end large-diameter carbon electrodes of φ1020~φ1400mm for high-efficiency and large-capacity 20000KVA~40000KVA calcium carbide furnaces.

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