wanhaorefractory

  At present, there are two main measures to improve the bursting resistance of refractory castables , reasonable drying and heating system and application of explosion-proof additives. Due to the different production conditions in different kilns, it is difficult to formulate a unified and reasonable drying and heating system. Therefore, anti-explosion substances are often added to improve the anti-explosion performance of refractory castables . The new high-strength corrosion-resistant castable has excellent corrosion resistance and good thermal shock resistance, which makes it widely used in the lining of key parts of large kilns. In the production process, the structure, particle size distribution, material and additives were adjusted to improve its anti-cracking performance, but at the same time, some problems were brought, such as too fast setting speed, delayed hardening and instant loss of fluidity, which caused the refractory castable to burst from time to tim...

  Ladle purging plug is a kind of functional refractory material with long life, energy saving, consumption reduction and emission reduction. It is made by firing high-purity raw materials. It has the advantages of high blow-through rate, corrosion resistance, thermal vibration resistance, safety and reliability, and long life. P urging plug is used in the out-of-furnace refining of ferrous metals and the smelting of non-ferrous metals. 1.The influence of smelting conditions on the air permeability of ventilating bricks The greater the degree of overheating, the lower the viscosity, surface tension, and wetting angle of the molten steel, the greater the tendency to seep steel, and the lower the ladle blow-through rate. Some research materials have introduced: when the carbon in the iron-carbon melt is 0.15% and 0.40%, the surface tension appears the minimum and the maximum, reducing the content of the non-metallic elements sulfur and oxygen of the steel grade can si...

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...

(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, ...