CAJ | 학술논문

用东北大学研制的新型高效阳离子捕收剂DBA-1对石英纯矿物进行了药剂用量、浮选温度、合适酸碱度试验,并借助Zeta电位测定、红外光谱分析和接触角测定对DBA-1浮选石英的机理进行了分析,以检验DBA-1对石英的捕收性能及效果。结果表明：①0．074~0．038 mm粒级石英纯矿物在pH=8．5、矿浆温度为18℃、药剂用量为75 mg/L的情况下可获得97．3%的回收率。②在无DBA-1的矿浆中,石英零电点的pH=2．26,而与DBA-1作用后的零电点偏移至10．10,说明DBA-1可以以阳离子形式在石英表面发生静电吸附；DBA-1与石英作用前后的红外光谱分析表明,二者间存在氢键吸附。③DBA-1的添加可大幅度提高石英表面的接触角,增强其表面的疏水性和可浮性,接触角在12．6°~27．0°范围内的小幅增大都会引起回收率的大幅度提高。
용동북대학연제적신형고효양리자포수제DBA-1대석영순광물진행료약제용량、부선온도、합괄산감도시험,병차조Zeta전위측정、홍외광보분석화접촉각측정대DBA-1부선석영적궤리진행료분석,이검험DBA-1대석영적포수성능급효과。결과표명：①0．074~0．038 mm립급석영순광물재pH=8．5、광장온도위18℃、약제용량위75 mg/L적정황하가획득97．3%적회수솔。②재무DBA-1적광장중,석영령전점적pH=2．26,이여DBA-1작용후적령전점편이지10．10,설명DBA-1가이이양리자형식재석영표면발생정전흡부；DBA-1여석영작용전후적홍외광보분석표명,이자간존재경건흡부。③DBA-1적첨가가대폭도제고석영표면적접촉각,증강기표면적소수성화가부성,접촉각재12．6°~27．0°범위내적소폭증대도회인기회수솔적대폭도제고。
The flotation behavior,including the dosage of collector,the temperature and pH of pulp,on quartz using DBA-1 as a new collector developed by Northeastern University was investigated. Zeta potentials,infrared spectrum analysis and con-tact angle measurement were used to detect the interaction mechanism of the of the quartz surface with DBA-1,to check out the collecting performance of DBA-1 on quartz. The results show that:①Recovery of 97. 3% on quartz flotation is obtained at the optimum conditions of particle size from 0. 038 to 0. 074 mm,pulp pH 8. 5,slurry temperature 18 ℃,and the dosage of collec-tor 75 mg/L.②After adding DBA-1 to the slurry,point of zero charge on quartz surface increased from 2. 26 to 10. 10. It is in-dicated that adsorption of DBA-1 occurred on the quartz surface. The adsorption mainly includes electrostatic adsorption and hydrogen bonding adsorption.③The quartz surface contact angle was increased obviously after adding DBA-1,which enhanced its hydrophobicity and floatability,and the recovery rate will be improved significantly when the contact angle slightly raise from 12. 6°~27. 0°.