Chemical analysis methods for non - re impurity of rare earth metals and their oxides determination of ignition loss content of rare earth oxides - gravimetric method
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Heat insulation refractory brick is a kind of insulation material adoption organic matter as ignition loss substance in order to increase the porosity , small volume density , good insulation effect , high mechanical intensity , smallthermal conductivity and long service life . for various industrial kilns & furnaces , it is an kind of essential refractory for energy saving and temperature preservation
