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In this paper, on the basis of the sulfide ore collector status quo and development trend of development of the new dual- chelating ligand collector ; class chelation collector and Cu (II l ) , Ni (II ) complexation of Fe ( III ) of actual ore flotation performance . Isothiocyanate , respectively, with a diol , diamine addition , disulfide was prepared urethane and Bisthiourea of two categories (six ) were synthesized novel chelating collector . As raw materials , sodium thiocyanate, ethyl chloroformate , DMA (N, N - dimethylanilide ) as catalyst, prepared intermediates ethoxycarbonyl isothiocyanate . The intermediate glycol and diamine addition , to generate double thionocarbamate Bisthiourea . Reaction conditions : studies show ethoxycarbonyl isothiocyanate and the corresponding diol (ethylene glycol, 1,4 - butanediol , 1,6 - hexanediol ) , and the reaction at 50 ℃ 4h to give the corresponding bis thiourethane (DTC - 2 , the DTC- 4 , the DTC - 6 ) yield were 92.91% , 95.96%, 96.00% ; ethoxycarbonyl isothiocyanate , with the corresponding diamines (ethylenediamine , l , 2 - propanediamine , 1,6 - hexamethylene diamine ) , and the reaction at 20 ℃ 1h to give the corresponding bis - thiourea (DTU - 2 , the DTU- 3 , the DTU - 6 ) production rate of 86.39% , respectively , 83.03% 84.30% . Determination of the solubility, density , melting point and other physical properties of the new material ; infrared spectroscopy , elemental analysis , UV spectra , NMR confirmed the chemical structure of the product . Application of ultraviolet spectroscopy and infrared spectroscopy , a systematic study reveals a novel dual ligand chelating collector with Cu (II ) , Ni (II ) , Fe ( III ) of the interaction law . The results show that these three metal ions have a certain selectivity order : Cu ( II) gt ; Ni ( II ) gt ; Fe ( III ) novel dual ligand chelate collectors through their respective C = S the sulfur atom and the C = O oxygen atom with copper ions combine to form a six-membered ring chelates . DTC-4 and DTC-6, Bisthiourea select DTU-3 applied Dexing Copper Mine open flotation results showed that of three insecticides are better election copper Pharmacy in double thionocarbamate select with less and the effect of good, better than the existing AP collector . Which the DTU - election copper outperforms double thionocarbamate (DTC-4 and DTC- 6 ) ; compared with the Mac-12 , better copper , molybdenum collector .
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