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A submerged arc furnace body

A submerged arc furnace and furnace body technology, applied in the field of submerged arc furnace, can solve the problems of shortening the service life of the submerged arc furnace, increasing the cost of metal smelting, and burning through the bottom of the submerged arc furnace, so as to avoid cracking and damage to the furnace wall, Enhanced structural strength and thermal protection performance, extending the service life

Active Publication Date: 2018-03-20
内蒙古纳顺装备工程(集团)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • A submerged arc furnace body
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Example 1: The raw material mass ratio of the sintered layer 3 is preferably 77 parts of clay, 49 parts of silicon nitride, 39 parts of quartz sand, 16 parts of magnesia, 36 parts of silicon carbide, 25 parts of dolomite powder, 2 parts of calcium oxide and oxidation 6 parts of iron.

Embodiment 2

[0067] Example 2: The mass ratio of the raw materials of the sintered layer 3 is preferably 85 parts of clay, 53 parts of silicon nitride, 41 parts of quartz sand, 17 parts of magnesia, 35 parts of silicon carbide, 27 parts of dolomite powder, 3 parts of calcium oxide, and oxidation 8 parts of iron.

Embodiment 3

[0068] Example 3: The raw material mass ratio of the sintered layer 3 is preferably 81 parts of clay, 55 parts of silicon nitride, 40 parts of quartz sand, 18 parts of magnesia, 37 parts of silicon carbide, 28 parts of dolomite powder, 3 parts of calcium oxide and oxidation 7 parts of iron.

[0069] Comparative experiment 1: The raw material mass ratio of the sintered layer 3 is 49 parts of silicon nitride, 39 parts of quartz sand, 16 parts of magnesia, 36 parts of silicon carbide, 25 parts of dolomite powder, 2 parts of calcium oxide, and 6 parts of iron oxide.

[0070] Comparative experiment 2: The raw material mass ratio of the sintered layer 3 is 81 parts of clay, 55 parts of silicon nitride, 40 parts of quartz sand, 18 parts of magnesia, 7 parts of silicon carbide, 8 parts of dolomite powder, 3 parts of calcium oxide and iron oxide 7 servings.

[0071] Table 1 shows the results of comparative experiments

[0072]

Sintered layer hardness (Mohs hardness)

Outside temperature o...

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Abstract

The invention provides a submerged arc furnace body. The submerged arc furnace body comprises a main structure and a terminal monitoring system. The main structure comprises a cylindrical shell, a round base, a refractory brick layer, an insulation filler, a preheating channel, a refractory layer, a sintering layer, a refractory pouring layer and a conveying mechanism. The terminal monitoring system comprises a terminal controller, a proximity sensor, a conveying motor, a camera and a terminal wireless communication module. According to the submerged arc furnace body, raw mineral materials are preheated, thus the rangeability of furnace-in temperature is relieved, and furnace wall damage is avoided.

Description

Technical field [0001] The invention relates to an industrial production equipment, especially a submerged arc furnace. Background technique [0002] Submerged arc furnace is a kind of electrode inserted into the charge or slag formed by concentrate or ore in the liquid melt, relying on the dual effect of the micro arc formed on the interface between the electrode and the charge or the liquid melt and the resistance of the melt to make electrical energy Electric heating equipment that converts into heat. Submerged arc furnace, also known as electric arc furnace or electric resistance furnace, is mainly used for the production of ferrosilicon, ferromanganese, ferrochrome, tungsten, silicomanganese, silicon-chromium and other ferroalloys, pig iron, calcium carbide or boron nitride. The submerged arc furnace is mainly composed of a furnace shell, a fume hood, a furnace bottom, a furnace lining, an electrode, a controller, an electrode pressure release and lifting system, a short ne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27B3/08F27B3/10F27B3/14F27B3/28F27D13/00
CPCF27B3/085F27B3/10F27B3/14F27B3/28F27D13/00
Inventor 胡敬国任艳荣
Owner 内蒙古纳顺装备工程(集团)有限公司