Submerged arc furnace body and constructing method thereof

Abstract

The invention provides a submerged arc furnace body. The submerged arc furnace body comprises a furnace bottom and a furnace wall which is connected with the furnace bottom; the furnace bottom comprises an asbestos board layer, a refractory grain layer, a refractory brick layer, a ramming material layer and a refractory material layer, wherein the asbestos board layer is laid on a furnace bottom steel plate; the refractory grain layer is paved on the asbestos board layer; the refractory brick layer is constructed on the refractory grain layer, and comprises refractory bricks and refractory clays filled among the refractory bricks; the ramming material layer is paved on the refractory brick layer; and the refractory material layer is constructed on the ramming material layer. The invention further provides a constructing method for the submerged arc furnace body. Ramming materials are used to replace carbon bricks to construct the submerged arc surface body, the ramming materials can form a firm integrated sintering layer under the high-temperature sintering condition, so that the sintering layer has no seam and does not easily generate cracks in a smelting process while alternatively acted by cold and heat, thus molten iron can be prevented from eroding and burning through the furnace bottom, the service life of the submerged arc furnace is prolonged, the cost of metal melting is reduced, and the safety of the submerged arc furnace body is increased.

Description

technical field [0001] The invention belongs to the technical field of submerged arc furnaces, and in particular relates to a submerged arc furnace body and a masonry method thereof. Background technique [0002] The submerged arc furnace is a kind of electrode that is inserted into the liquid melt such as charge or slag formed by concentrate or ore, relying on the double action of the micro-arc formed on the interface between the electrode and the charge or liquid melt and the resistance of the melt to make the electric energy Electric heating equipment that converts heat energy. Submerged arc furnace, also known as electric arc furnace or resistance electric furnace, is mainly used to produce ferrosilicon, ferromanganese, ferrochrome, ferrotungsten, silicon-manganese alloy, silicon-chromium alloy and other ferroalloys, pig iron, calcium carbide or boron nitride. [0003] Submerged arc furnace is an industrial electric furnace with huge power consumption. It is mainly comp...

AI Technical Summary

Problems solved by technology

In the above-mentioned furnace bottom, carbon bricks are the main material. During masonry, the gaps between carbon bricks are generally 5cm to 6cm, and the gaps are filled with electrode paste; however, when using this submerged arc furnace for metal smelting, due to Under the alternating action of cold and heat, cracks are easily formed between carbon bricks, and molten iron is easy to infiltrate through the gaps, erode the bottom of the furnace, and cause the bottom of the submerged arc furnace to burn through, which not only shortens the service life of the submerged arc furnace, but also causes shutdowns and increases The cost of maintenance and metal smelting will also bring hidden dangers to safe production

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