Main component self-compare with calibration factor can be used when testing impurity content.
Made by imported high quality graphite material with low impurity content, no out of sharp issue under long time high temperature.
Mixed RE elements could improve the conductivity of pure aluminum with relatively high content of impurities, but had little effect on that with relatively low impurity content.
The reason for wet salt caking is analyzed from the aspects of impurity content of salt, drying, cooling, conveying and packaging etc.
Measurement on reducing impurity content in export coal in Datong Coal Group;
Mechanism of decreasing impurity content of Ta powder by induction plasma technology