THE EFFECTIVENESS OF Mag-CHROME - A REFRACTORY MATERIAL PRODUCED THROUGH DIFFERENT ROUTE

摘要

Electric arc fusion and high temperature sintering are the common practice to produce MgO-Chrome refractory material synthetically. Plasma technology, a newly emerging route to produce materials with an extra-ordinary property development over the traditional methods. For refractory application specific microstructure and the size fraction of the phase is highly required to sustain the thermo-mechanical and pyro-chemical conditions during use. The chemical kinetics of any material suggests that, it is the degree of freedom that tailors the material with identical property. A more mobile phase is always deals with a highest degree of freedom to facilitate the mobility of the molecular mass-transport with respect to the time and space. If the transport kinetics is considered then the potential of the mobile compounds can be well analysed with respect to the present temperature, pressure and the catalytic compounds in the medium. So a sequence of reaction with respect to the phase equilibrium starts to form a stable phase composition and microstructure. How ever size distribution of the phase is highly depend on the space and time of the prevalence of the appropriate environment. The mobile molecules move faster if the selection of material is done with the pace and mode of heat generation to conduct the huge heat within a fraction of second. The sufficient availability of the molecules in the surrounding of the phase of higher chemical co-efficiency for the growth of the compound in the medium then a material with identical phase and microstructure will evolve which will be extraordinary from the traditional process. Control over the viscosity and space fabricate a noble microstructure with uniform distribution through out the material the mobility reflects on the bonding character and the phase assemblage of the refractory material take the sole position in value addition to the refractory material. MgO-Chrome is a prime refractory material for copper smelter zone, blast furnace and cement rotary kiln. A distinct phase assemblage and microstructure is required for different field of application of MgO-Chrome refractory material. The mode of heat generation and the rate of conduction structure the material to equip with all the desired properties. By a little control over the time of fusion the desired material has been fabricated through plasma technology with nominal power consumption (B.K.Panda etal). The novelty of this technology can be well utilized in the field of refractory instead of the traditional costly routes (Electric arc fusion, high temperature sintering etc.) to design the material with sound properties.