Assertion: high quality magnesia | /r/HasProperty | less than 30%
Facets:
Source sentences:
text: The disadvantage of this method is the high ratio of line voltage to the power consumption to the extent of 0.25, which leads to a rapid build-up unit (total capacity of more than 300 kg/hour) with a low degree of migration of impurities in the melt and low yield of high quality magnesia (less than 30%).