wanhaorefractory

  Sintered magnesia purging plug : the sintered magnesia material refers to the refractory material with more than 80% MgO content, which belongs to alkaline refractory material. It has the advantages of high refractoriness, strong resistance to alkaline slag erosion, free from Ca and Cao erosion, and no pollution of molten steel. Magnesia chrome purging plug: magnesia chrome material is a refractory material with MgO and Cr2O3 as the main components and periclase and spinel as the main mineral components. Chrome ore is not inert to steelmaking slag and has compatibility with other refractories, so the appearance of magnesia chrome material can improve the thermal shock resistance of magnesia material. High alumina purging plug : high alumina material refers to the refractory material with more than 48% alumina content, which has the characteristics of high cold and hot strength, good wear resistance, heat shock resistance, spalling resistance and good volume stability at high temp...

  Sintered magnesia purging plug : the sintered magnesia material refers to the refractory material with more than 80% MgO content, which belongs to alkaline refractory material. It has the advantages of high refractoriness, strong resistance to alkaline slag erosion, free from Ca and Cao erosion, and no pollution of molten steel. Magnesia chrome purging plug: magnesia chrome material is a refractory material with MgO and Cr2O3 as the main components and periclase and spinel as the main mineral components. Chrome ore is not inert to steelmaking slag and has compatibility with other refractories, so the appearance of magnesia chrome material can improve the thermal shock resistance of magnesia material. High alumina purging plug : high alumina material refers to the refractory material with more than 48% alumina content, which has the characteristics of high cold and hot strength, good wear resistance, heat shock resistance, spalling resistance and good v...

  1. Thermal stress The ladle purging plug directly contacts the high-temperature molten steel, and is subject to the continuous cold air flow, which generates a large temperature gradient, resulting in high concentration of stress. 2.Scour and abrasion The blown gas gives a certain reverse impact force to the working surface of the purging plug , and at the same time has a shearing and scouring effect on the purging plug. 3.Chemical erosion The material of the purging plug reacts with the molten steel penetrating the slit and the slag that has eroded into the working layer, which changes the physical and chemical properties of the working layer of the purging plug and increases the tendency of spalling. 4.Burning oxygen cleaning The high temperature when burning oxygen is very fatal to ladle purging plug , and the melt loss within a few minutes is many times higher than the normal refining erosion. Wanhao is a manufacturer who is specialized in designing various k...

  The continuous casting tundish was originally used for the heat preservation of molten steel, and its main purpose was to distribute and rectify molten steel. With the successful development of technologies such as slow cooling of molten steel, molten steel reheating technology, argon gas sealing technology, gas stirring technology and removal of non-metallic inclusions in molten steel, continuous casting tundish have become the most important part of the final stage of the steel smelting process. The main refining vessel is developing to a large scale. 1 Purification function To produce high-purity clean steel, install porous air-permeable bricks at the bottom of the tundish or embed porous tubular gas distributors between the working layer and permanent layer, or install porous bricks on the slag retaining wall to blow argon to make argon bubbles. Float evenly from the bottom to promote the removal of inclusions. These devices can elimi...

 Argon blowing is usually to build one or several ladle purging plug at the bottom of the pouring ladle or brick ladle. After tapping, blow argon gas through the breathable bricks to cause agitation of the molten steel in the ladle. Argon blowing can promote the floating of emulsified slag droplets and inclusions in steel, and can partially remove the dissolved gas and uniform components in the steel. In the case of continuous casting, the ladle blowing of argon can play a role in adjusting the temperature of the molten steel. Ladle argon blowing is an important steelmaking process, and breathable bricks are an important functional element of this process. 1.Material and performance of ladle purging plug The materials of permeable bricks are mainly sintered magnesia, magnesia chromium, high aluminum and corundum. It is a better choice to use corundum as the main crystal phase of the breathable brick. To realize the argon blowing process, the air-permeable brick mus...

  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...

1. Thermal stress The ladle purging plug directly contacts the high-temperature molten steel, and is subject to the continuous cold air flow, which generates a large temperature gradient, resulting in high concentration of stress. 2.Scour and abrasion The blown gas gives a certain reverse impact force to the working surface of the purging plug , and at the same time has a shearing and scouring effect on the purging plug. 3.Chemical erosion The material of the purging plug reacts with the molten steel penetrating the slit and the slag that has eroded into the working layer, which changes the physical and chemical properties of the working layer of the purging plug and increases the tendency of spalling. 4.Burning oxygen cleaning The high temperature when burning oxygen is very fatal to ladle purging plug , and the melt loss within a few minutes is many times higher than the normal refining erosion. Wanhao is a manufacturer who is specialized in designing various...

Refractories used for ladles are generally ladles and refining refractories, furnace refractories, converter refractories, tundish refractories, blast furnace refractories, etc. Specific products are ladle air permeable bricks , furnace cover, tundish slag retaining wall, castable, ramming materials, etc. The purpose of ladle gas permeable bricks used by steelmaking factories is to remove harmful gases and impurities, adjust the composition, so as to complete the basic tasks of oxygen supply, slagging, stirring, heating and other steelmaking. In addition to ladle permeable bricks , refractories for ladle and refining are magnesia-carbon bricks , nozzle seat bricks, slide-board bricks, spinel castables, magnesia-chrome bricks, sliding nozzles, etc. The materials are magnesia-carbon, high alumina, spinel, alumina-carbon, etc. The refractories used in electric furnace are mainly the furnace cover, bottom air permeable brick, side wall spraying material, tapping fill...