Submerged arc furnace with self-baking electrode roasting degree measuring device

Abstract

The invention relates to the technical field of submerged arc furnaces, in particular to a submerged arc furnace with a self-baking electrode roasting degree measuring device; and the electrode roasting degree measurement and graphical representation are realized through a thermal imaging technology by using a function relationship between temperatures and roasting degrees of electrode paste of self-baking electrodes in different positions in an electric furnace in different phases to meet the requirements of effectively and timely mastering the roasting degrees of the self-baking electrodes.The submerged arc furnace comprises a furnace body and electrodes; the lower ends of lower half sections of the electrodes are inserted in furnace burdens; protective screens are arranged on the outerwalls of the upper ends of the lower half sections of the electrodes; the electrodes between the bottoms of the protective screens and the furnace burdens are electrode bare sections; electric conducting brasses are arranged on the outer walls of the lower ends of the electrodes in the protective screens; pressure rings are mounted on the outer walls of the electric conducting brasses; furnace internal copper pipes are arranged above the electric conducting brasses; and thermal imaging probes are mounted in the electric conducting brasses. The submerged arc furnace has the following beneficial effects: through monitoring of the temperatures in the electrode sintering process by the thermal imaging probes, the electrode sintering degrees are controlled.

Description

technical field [0001] The invention relates to the technical field of submerged arc furnaces, in particular to a submerged arc furnace with a device for measuring the roasting degree of self-baking electrodes. Background technique [0002] The submerged arc furnace with self-baking electrodes is widely used in the smelting production of ordinary ferrosilicon alloys, silicon-manganese alloys, ferrochrome alloys, calcium carbide and other alloys with low requirements for carbon and iron content because of its low cost. However, self-baking electrodes also have their inherent defects, such as the imbalance between firing speed and consumption speed, unstable firing quality, and serious problems such as soft and hard electrode breakage, which have a great impact on continuous production and safe production. Major casualty accidents have serious consequences for industry production. [0003] The reasons for its inherent defects mainly include the following aspects: (1) For a sh...

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Problems solved by technology

However, the production raw materials of self-baking electrode paste are affected by the upstream supply, and its quality index is extremely unstable, so the quality of the electrode paste produced by it will also fluctuate, which will have a great impact on the stable production of submerged arc furnaces; (2) The production of hot furnace is affected by its raw materials, power supply, operation level, etc., which has an impact on the sintering speed and consumption speed of the self-baking electrode, resulting in its imbalance, insufficient sintering or too much pressure, and the result is that the electrode will be soft and hard. broken possibility

[0004] The above-mentioned first problem can be controlled by the supplier, but due to the lack of effective measurement methods for the solution to the second problem, adjustments can only be made when serious consequences occur, and new problems of overcorrection will appear. There is no effective way to measure the degree of sintering of self-baking electrodes, and it basically depends on visual inspection and long-term operation and use experience to judge

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