论文部分内容阅读
据悉,山东省肥城市西部和北部发现了特大型钾长石矿 据勘查,该市钾长石储量5亿多吨,可采量1.5
It is reported that in the northern and western part of Feicheng City, Shandong Province, a large-scale potassium feldspar mine was discovered. According to the survey, the city has over 500 million tons of potash feldspar reserves and 1.5