wanhaorefractory

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/

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...

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 ...

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...

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...

In recent years, with the development of science, based on the consideration of cl ion corrosion gasifier wall, the dew point temperature of gasifier has been raised, and some lining structure and materials have been changed. At present, the new configuration scheme: the refractory lining of the gasifier is mainly divided into four layers from the inside to the outside: the facing surface is chrome aluminum zirconium brick, the back lining brick is chrome steel jade brick, the third layer is changing from the traditional hollow alumina hollow ball brick to the silicon carbide (SiC) brick and the fourth layer is refractory fiber or plastics. By comparison, it can be found that the thermal conductivity of the two materials is quite different, and that the GE company chooses silicon carbide (SiC) brick as thermal insulation brick to ensure higher dew point temperature, so as to reduce the corrosion of furnace wall caused by cl ion and prolong the service life of gas...

(1) The vibrating bar must not touch the core and the heat insulating material, so it should be kept at a certain distance from the core and the heat insulating material, but it should not be larger than 50mm. (2) The penetration depth of the vibrating bar shall not touch the underlying castable , but the distance from the lower layer shall not exceed 50 mm. (3) The distance of the insertion point of the vibrating bar should not exceed 200mm, keep the uniform and dense vibration, and slowly lift the vibrating bar when it is pulled out. Do not pull out suddenly to avoid leaving holes. (4) A special person should be in charge of mastering the vibrating rod. If it is found that there are unqualified quality requirements, it should be treated in time to continue construction. (5) Pouring the wall of the package is usually two rounds of material vibration, each feeding thickness is about 250mm, to achieve uniform cloth, and pay attention to uniform vibration, ...