In order to rationally exploit and utilize mineral resources such as magnesium, niobium, tantalum, silica materials, bentonite and mirabilite, the Ministry of Land and Resources of China has recently laid down a document to limit the exploitation and utilization of these mineral resources.
According to the document, the recovery rate of open-pit mine and underground mine of magnesium, niobium-tantalum, and bentonite is ≥92% and ≥60%, ≥95% and ≥70%, and ≥90% and ≥70%, respectively; according to the ore grade, the lowest concentration recovery of niobium-tantalum mine and bentonite is 28%-48%, and ≥90%, respectively; the comprehensive utilization rate of lithium metal is ≥28%; the tailings comprehensive utilization rate of bentonite is ≥80%; the recovery rate of open-pit mine of mirabilite is ≥85% and the comprehensive utilization rate of the associated salt resources is ≥21%.
|