由该磁性物质制备的铁精矿，其含铁量分别为62.01%（龙感湖硫酸厂）和67.81%（株洲化工厂）。
And the iron contents of the iron extractive mines prepared from the magnetic substances were respectively 62.01 % ( Longganghu Vitriol Plant ) and 67.81 % ( Zhuzhou Chemical Plant ) .
龙感湖