FLOTATION BEHAVIOUR AND MECHANISM OF BASTNAESITE WITH N-HYDROXYL PHTHALICIMIDE  

作　　者：REN Jun Baotou Research Institute of Rare Earth Metals,Ministry of Metallurgical Industry,Baotou,China engineer,Baotou Research Institute of Rare Earth Metals,Baotou 014010,China 

出　　处：《Acta Metallurgica Sinica(English Letters)》1993年第12期432-436,共5页金属学报（英文版）

摘　　要：The flotation behaviour and mechanism of bastnaesite with N-hydroxyl phthalicimide were investigated by ξ-potential measurement,infrared spectrum and quantum chemistry calculation.The results show that 3 oxygen atoms from N-hydroxyl phthalicirnide chelate the rare earth ions on the surface of bastnaesite to form double five-chain O=C-N-O- RE(Ⅲ)-O chelate which is chemically adsorbed on the surface of bastnasite,thus making N-hydroxyl phthalicimide an effective collector for bastnaesite.The flotation behaviour and mechanism of bastnaesite with N-hydroxyl phthalicimide were investigated by ξ-potential measurement,infrared spectrum and quantum chemistry calculation.The results show that 3 oxygen atoms from N-hydroxyl phthalicirnide chelate the rare earth ions on the surface of bastnaesite to form double five-chain O=C-N-O- RE(Ⅲ)-O chelate which is chemically adsorbed on the surface of bastnasite,thus making N-hydroxyl phthalicimide an effective collector for bastnaesite.

关 键 词：N-hydroxyl phthalicimide FLOTATION BASTNAESITE COLLECTOR 

分 类 号：TG-55[金属学及工艺]