CAJ | 학술논문

考察了自行合成的新型有机硅阳离子表面活性剂QAS222对一水硬铝石、高岭石、叶蜡石和伊利石等4种铝硅矿物的浮选行为,并以其为铝硅酸盐矿物的捕收剂,进行了不同铝硅比的人工混合矿反浮选分离脱硅试验研究.试验研究结果表明,新型阳离子有机硅季铵盐类化合物是铝土矿反浮选脱硅的有效捕收剂;酸性条件下QAS222对一水硬铝石、高岭石、叶腊石和伊利石表现较好的捕收力,但此时反浮选分离趋势不明显;而在碱性条件下,以QAS222为捕收剂,随着矿浆pH值的上升,4种矿物的可浮性出现了不同程度的减低,尤其是当矿浆pH＞9后,一水硬铝石的上浮率骤减,铝硅矿物之间表现出了良好的反浮选分离趋势;在矿浆pH值为11时,以QAS222为捕收剂,不添加其它任何抑制剂,成功地实现不同铝硅比的人工混合矿的反浮选脱硅,并获得较好的选别指标--当给矿A/S仅有2.7时,仍能获得精矿A/S为12.82,其中Al_2O_3品位77.79%、回收率69.91%的较好指标,且当给矿A/S不断增大时,精矿中的A/S,Al_2O_3的品位和回收率都有所提高.
고찰료자행합성적신형유궤규양리자표면활성제QAS222대일수경려석、고령석、협사석화이리석등4충려규광물적부선행위,병이기위려규산염광물적포수제,진행료불동려규비적인공혼합광반부선분리탈규시험연구.시험연구결과표명,신형양리자유궤규계안염류화합물시려토광반부선탈규적유효포수제;산성조건하QAS222대일수경려석、고령석、협석석화이리석표현교호적포수력,단차시반부선분리추세불명현;이재감성조건하,이QAS222위포수제,수착광장pH치적상승,4충광물적가부성출현료불동정도적감저,우기시당광장pH＞9후,일수경려석적상부솔취감,려규광물지간표현출료량호적반부선분리추세;재광장pH치위11시,이QAS222위포수제,불첨가기타임하억제제,성공지실현불동려규비적인공혼합광적반부선탈규,병획득교호적선별지표--당급광A/S부유2.7시,잉능획득정광A/S위12.82,기중Al_2O_3품위77.79%、회수솔69.91%적교호지표,차당급광A/S불단증대시,정광중적A/S,Al_2O_3적품위화회수솔도유소제고.
The flotation behaviors of diaspore,kaolinite,pyrophyllite and illite were observed with novel cationic surfactant QAS222 synthesized in lab as collector.And the reverse flotation experiment of mixed minerals ore were carried out.The flotation experimental results show that novel organosilicon quaternary ammonium is an effective collector of reverse flotation desilication from bauxite in the alkaline conditions.Under acid conditions the four minerals of diaspore,kaolinite,pyrophyllite and illite have good floatability with the QAS222 collector,and the tendency in reverse flotation is not obvious.Under alkaline conditions,the recoveries of the four minerals decreased at different rates with the increase of pH value,especially at slurry pH value higher than 9 that of diaspore turn down sharply and there is an obvious tendency in reverse flotation of diaspore from the three aluminosilicate minerals.With QAS222 as collector of aluminosilicates,using NaOH to regulate pH 11,without any other reagent,the reverse flotation separation of aluminosilicates and diaspore can be carried out successfully.As the A/S of mixed minerals is only 2.7,the grade of Al_2O_3 is 77.79% in concentrate with recovery of Al_2O_3 69.91% and A/S is 12.82.The grade and recovery of concentrate all increase with increase of A/S of mixed minerals.