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本文阐述了用邻苯二甲酸作捕收剂,并成功应用于山东微山矿的选矿,获得了高纯氟碳酸盐稀土精矿,矿物纯度为98.75％。小型开路试验选矿指标为:稀土精矿品位βTR_2O_3=69.55％,回收率ε=64.47％,对氟碳酸盐稀土矿物的回收率为80.50％。 邻苯二甲酸是具有一个苯环的二元羧酸,它和油酸相比,对氟碳酸盐稀土矿物具有选择性和捕集能力强、药剂性能和浮选性能稳定、价廉等优点。继美国蒙顿帕斯氟碳铈镧矿用油酸浮选,包头白云鄂博混合稀土矿用羟肟酸类浮选之后所发现的第三类芳香族捕收剂。用邻苯二甲酸和油酸浮选比较,每吨原矿的药剂资,后者贵1.31元;由于回收率的差异致使每吨精矿成本,前者为768.03元,后者为1321.96元。
This paper describes the use of phthalic acid as a collector, and successfully applied in the mineral processing Weishan, Shandong, obtained a high purity fluorocarbon rare earth concentrate, the purity of 98.75%. The beneficiation indexes of small-scale open-circuit test are as follows: the grade of rare earth concentrate is βTR_2O_3 = 69.55%, the recovery rate is ε = 64.47%, and the recovery rate of fluorocarbon rare earth minerals is 80.50%. Phthalate is a dicarboxylic acid with one benzene ring. Compared with oleic acid, phthalic acid is more selective and absorptive to fluorocarbon rare earth minerals, and has the advantages of stable pharmaceutical properties, flotation performance and low cost . Following the United States Maupassant bastnasite lanthanum ore flotation with oleic acid, Baotou Bayan Obo rare earth mixed with hydroxamic acid flotation after the discovery of the third category of aromatic collectors. With phthalic acid and oleic acid flotation comparison, the pharmaceutical resources per ton of ore, which is expensive 1.31 yuan; due to differences in recovery rate of per ton of concentrate costs, the former is 768.03 yuan, which is 1321.96 yuan.