博文

Measures to improve the life of converter tapping

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1.Optimize the heat exchange process, shorten the heat replacement time, ensure the temperature inside the furnace and the hole shape of the taphole, thus ensuring the sintering effect of the taphole filler and laying a foundation for improving the life of the taphole. 2. Appropriately increase the inner diameter of the taphole sleeve brick to shorten the tapping time, greatly reducing the oxidative erosion and mechanical erosion of the high temperature molten steel on the inner wall of the taphole. 3. Reduce the tapping temperature, the large drop of the tapping temperature reduces the erosion of the high temperature molten steel and slag on the taphole brick , and effectively improves the service life of the tapping port. 4. After tapping, the slag plug is used to block the taphole, which reduces the erosion and oxidation of the furnace gas and slag on the tapping port during the smelting process. Wanhao is a manufacturer who is specialized in designing v...

Corundum castable for ladle working layer

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1. Life: > 100 times 2. Baking time: must strictly follow the baking curve, especially in the early stage, not too high temperature. It can be operated according to the baking curve provided by the previous manufacturer. 3. Construction method: mould and vibrating rod. 4. Ordinary need to repair: need to remove the sintered layer, cover repair to increase life, because repair is more troublesome, customers generally do not repair operations. 5.  Corundum castable i s not used for refining ladles. Wanhao is a manufacturer who is specialized in designing various kinds of furnace and making refractory products for electric furnace, ladle, tundish, blast furnace, AOD furnace, IF furnace, etc. Article Source: refractory material Company name:Wanhao Refractory Email:sales100@wanhaorefractory.com Website: http://www.wanhaorefractory.com/

Electric furnace taphole brick

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Electric furnace taphole brick with low silicon high calcium high purity fused magnesia and fused magnesia as main raw materials, with high purity graphite flake, adding metal and boron compounds and other words composite additive, thermosetting and thermoplastic phenolic resin based composite. Electric furnace taphole brick   products with high density, high strength, high purity characteristics, resistance to steel, mechanical erosion performance, high temperature and oxidation resistance of special good. Wanhao is a manufacturer who is specialized in designing various kinds of furnace and making refractory products for electric furnace, ladle, tundish, blast furnace, AOD furnace, IF furnace, etc. Article Source: refractory material Company name:Wanhao Refractory Email:sales100@wanhaorefractory.com Website: http://www.wanhaorefractory.com/

Quality evaluation of bauxite

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The quality of bauxite will affect the control of production technology conditions, equipment capacity, energy consumption and product quality. The evaluation indexes of bauxite quality mainly include aluminum content, aluminum to silicon ratio of bauxite and type of bauxite. 1.Alumina content. The alumina content in bauxite is usually between 45% and 75%. The higher the content of alumina, the better the product quality; 2.The ratio of aluminum to silicon of bauxite. The higher the ratio of aluminum to silicon, the better the quality of bauxite. At present, industrial production of alumina requires bauxite with an aluminum to silicon ratio of not less than 3.0-3.5. 3. Type of bauxite. Different types of bauxite, the technical conditions adopted are also different. Wanhao is a manufacturer who is specialized in designing various kinds of furnace and making refractory products for electric furnace, ladle, tundish, blast furnace, AOD furnace, IF furnace, etc. Article Sourc...

Cause of electrode damage

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1. Electrode end face consumption. Cause: Continuous sublimation at high temperature; thermal stress is generated in the electrode to peel off; when the   slag   layer is thick, the electrode end is in contact with the   slag   liquid phase and is partially melted. 2. The side of the electrode is consumed. When the temperature exceeds 400℃, oxygen can penetrate into the graphite surface to oxidize. Oxidation is exacerbated when the temperature exceeds 550-600℃. 3. The electrode is broken. Causes of fracture: failure of the electrode lifting system; improper distribution of scrap steel in the furnace, collapse of the bulk material, and improper melting process. 4. Stump consumption. In order to prevent the electrode tip from inadvertently falling into the molten steel and increasing carbon, it is usually manually removed. The loss of this part can be as high as 5%. Wanhao is a manufacturer who is specialized in designing various kinds of furnace and making ...

How should repair the refractory lining of the iron runner

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The iron runner lining does not receive all the erosion evenly during use. In the later stage of use, partial damage, flaking, cracking may occur, especially in the main iron runner. In order to balance the loss of the lining of the refractory material , it is necessary to increase the service life while effectively utilizing it. A better way is to use the hot spray method. For the iron storage trench, the residual iron stored at the bottom of the iron runner must be cleaned out before the spraying operation. Therefore, it is necessary to pay attention to selecting the appropriate timing for spraying to achieve better results. The most suitable timing for spraying should be selected when the iron line is damaged, and the slag line concave and reaches a certain level. The timing of the spraying should be selected when the surface temperature of the iron runner lining is from 800℃ (reddish red) to 500℃ - 600℃ (beginning to turn black). Wanhao is a manufacturer who is spe...

How to improve the quality of refractory castables for electric arc furnace covers

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In order to improve the quality of the refractory castable , the following technical measures could be taken. 1. Raw materials of high purity, low impurity, stable volume at high temperature are the main conditions; 2. Minimize the amount of cement used. As the temperature increases, the CaO content increases, and the amount of liquid phase increases greatly; 3. Adding an appropriate amount of soft clay as a sintering agent to promote the formation and sintering of the liquid phase; 4. Improve the volume shrinkage of material during the sintering, adding an additive that produces an expansion effect at a high temperature; 5. Add heat-resistant steel fiber to improve stability and enhance toughness; 6. Add an appropriate amount of antiknock agent to promote the smooth discharge of water vapor and improve the baking quality. Wanhao is a manufacturer who is specialized in designing various kinds of furnace and making? refractory products ?for electric furnace, ladle, tu...