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尾矿利用在各领域发展中存在的主要问题 目前尾矿利用存在的问题是铁屑过量系数为1.4在聚合PFPS的过程中,研究了氧化剂用量与Fe2+转化率之间的关系,以及磷酸钠、聚合温度、聚合时间对聚合产品盐基度的影响,确定了较佳条件为nNaClOnFe2+=0.16,nNa3PO4nFe2+=0.075,聚合温度75℃,聚合时间30min 对高岭土模拟水样中投加自制PFPS、PFS和
拜耳法的应用有利于降低能耗提高产能 目前,选矿拜耳法和石灰拜耳法与混联法相比,制造成本下降了100~200元,但氧化铝的回收率都降低了20%左右。而串联法与选矿拜耳法相比,制造成本高出约50元,比石灰拜耳法高出约140元,但其氧化铝的回收率却高出约20%。对于铝土矿资源**程度不高的我国,这一点不应被忽视。由于拜耳法系统直接采用液体烧碱补碱,*避免了烧结法的Na2CO3及Na2CO4流入拜耳法
铁精矿品位的提高使经济效益达到双赢 20世纪70年代末,鞍钢选矿采用细筛再磨技术提高了精矿品位,但由于粒度变细,烧结矿粉化严重,并没达到提高高炉指标的目的,这一教训值得吸取;另一方面,随着我国球团工艺的发展,用国产铁精矿制球团,粒度偏粗又成为选矿工艺一个十分重要的问题。最后,要完成对铁精矿品质的综合评价,还要开展必要的烧结、球团和冶金试验,以检测其相关性能。2002年9月,中国冶金矿山企业协会、
立式磨机在选矿厂的成功应用** 20世纪90年代美国工业矿物工艺设备公司(IMPEX)发明了**技术——高强度**细搅拌球磨(剥片)工艺,并为此制造了双槽高强度搅拌球磨机(剥片机)。该设备采用方形断面的立式槽体,具有搅拌速度高、**细磨**、生产能力大、可连续生产等优点,是一种有广阔发展前途的新型***细磨设备。目前立式螺旋搅拌磨机产品不断更新,已广泛应用于黄金、磁材