连云港某含氟磷灰石浮选提纯试验研究
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摘要
连云港某含氟磷灰石矿P2O5含量为31.23%,脉石矿物主要为白云石、方解石和石英,含量分别为13.68%、6.82%和2.33%。为开发利用该矿石,采用正浮选工艺对其进行提纯试验研究。结果显示,在磨矿细度为-0.074 mm占76.80%条件下,以NaOH为p H调整剂,碳酸钠和硅酸钠为抑制剂兼分散剂,油酸钠为捕收剂,在浮选机叶轮转速为2 000 r/min,充气量为0.25 m3/h条件下,经1粗1精1扫闭路浮选,获得了P2O5含量为36.68%、回收率为89.90%的磷灰石精矿。红外光谱测定和表面Zeta电位测定结果表明,油酸钠主要以化学吸附形式吸附在磷灰石表面,降低了磷灰石的表面动电位,研究结果对类似磷矿资源的回收利用具有参考意义。
The fluorinated apatite ore from Lianyungang contains 31.23% P2 O5,and its gangue minerals are mainly dolo?mite,calcite and quartz,with contents of 13.68%,6.82% and 2.33%,respectively. In order to develop and utilize the ore,the direct flotation purification experiment was carried out. Results show that at the grinding fineness of 76.80% passing 0.074 mm,NaOH as pH adjusting agent,sodium carbonate and sodium silicate as both inhibitor and dispersant,sodium oleate as collector,the flotation machine impeller speed of 2 000 r/min,inflating volume is 0.25 m3/h,via one roughing one cleaning and one scavenging flotation,apatite concentrate with P2 O5 content of 36.68%,at recovery of 89.90% was obtained. Infrared spectrometry and surface Zeta measurement showed that sodium oleate was mainly adsorbed on the surface of apatite in the form of chemical adsorption,which reduced the surface dynamic potential of apatite. This results has significant reference for the recovery and utilization of phosphorus resources.
The fluorinated apatite ore from Lianyungang contains 31.23% P2 O5,and its gangue minerals are mainly dolo?mite,calcite and quartz,with contents of 13.68%,6.82% and 2.33%,respectively. In order to develop and utilize the ore,the direct flotation purification experiment was carried out. Results show that at the grinding fineness of 76.80% passing 0.074 mm,NaOH as pH adjusting agent,sodium carbonate and sodium silicate as both inhibitor and dispersant,sodium oleate as collector,the flotation machine impeller speed of 2 000 r/min,inflating volume is 0.25 m3/h,via one roughing one cleaning and one scavenging flotation,apatite concentrate with P2 O5 content of 36.68%,at recovery of 89.90% was obtained. Infrared spectrometry and surface Zeta measurement showed that sodium oleate was mainly adsorbed on the surface of apatite in the form of chemical adsorption,which reduced the surface dynamic potential of apatite. This results has significant reference for the recovery and utilization of phosphorus resources.
引文
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[2]李强,宋宪生,惠争卜,等.我国磷矿资源特点及开发利用建议[J].内蒙古煤炭经济,2017(18):46-49.Li Qiang,Song Xiansheng,Hui Zhengbu,et al.Characteristics of phosphorite resources in China and suggestions for development and utilization[J].Inner Mongolia Coal Economy,2017(18):46-49.
[3]田侠.我国磷矿资源综合评价与政策建议[J].中国国土资源经济,2016,29(8):29-31.Tian Xia.Comprehensive evaluation and policy suggestions of phos-phate rock resources in China[J].China's Economy of Land and Resources,2016,29(8):29-31.
[4]刘志超,李广,强录徳,等.从磷铁共生矿石中浮选磷灰石试验研究[J].湿法冶金,2017(1):12-15.Liu Zhichao,Li Guang,Qiang Lude,et al.Flotation of phosphorite from phosphorus-iron paragenesisore[J].Hydrometallurgy of China,2017(1):12-15.
[5]Santana R C,Farnese A C C,Marília C B,et al.Influence of particle size and reagent dosage on the performance of apatite flotation[J].Separation&Purification Technology,2008,64(1):8-15.
[6]S?nia Margerida de Assis,郑其.工艺矿物学和溶解行为对碳酸盐型磷灰石浮选的影响[J].国外金属矿选矿,1992(6):26-31.S?nia Margerida de Assis,Zheng Qi.Effect of process mineralogy and dissolution behavior on Flotation of carbonate apatite[J].Metallic Ore Dressing Abroad,1992(6):26-31.
[7]冯寅.磷灰石与白云石正浮选分离研究[D].长沙:中南大学,2011.Feng Yin.Positive Flotation Separation of Apatite and Dolomite[D].Changsha:Central South University,2011.
[8]葛平江,杨延东.水玻璃在氧化矿和多泥硫化矿浮选中的应用研究[J].中国矿山工程,2006,35(2):21-24.Ge Pingjiang,Yang Yandong.Applied study of Na2O·n SiO2·x H2Oin oxidized and muddy sulphide ore flotation[J].China Mine Engineering,2006,35(2):21-24.
[9]李沛伦,胡真,汪泰.硅酸钠水解组分对萤石活化浮选的干扰机理研究[J].矿产综合利用,2016(6):38-42.Li Peilun,Hu Zhen,Wang Tai.Research on the relationship between sodium silicate hydrolysis and fluorite flotation[J].Multipurpose Utilization of Mineral Resources,2016(6):38-42.
[10]胡岳华,徐竞,王淀佐.水玻璃与磷灰石、方解石作用的溶液化学研究[J].矿冶工程,1992,12(2):23-26.Hu Yuehua,Xu Jing,Wang Dianzuo.Water glass with apatite and calcite.The research on solution chemistry of[J].Mining and Metallurgical Engineering,1992,12(2):23-26.
[11]夏青,岳涛.浮选动力学研究进展[J].有色金属科学与工程,2012,3(2):46-51.Xia Qing,Yue Tao.The research progress of flotation kinetics[J].Nonferrous Metals Science and Engineering,2012,3(2):46-51.
[12]Koh P T L,Smith L K.The effect of stirring speed and induction time on flotation[J].Minerals Engineering,2011,24(5):442-448.
[13]马利凤,高淑玲,孟令国,等.浮选气泡及其与颗粒作用研究进展[J].金属矿山,2017(8):20-26.Ma Lifeng,Gao Shuling,Meng Lingguo,et al.Research progress of flotation bubble and its interaction with particles[J].Metal Mine,2017(8):20-26.
[14]索罗金АФ,安文华.充气量和浮选效率[J].选煤技术,1989(3):47-49.SuoluojinФА,An Wenhua.Inflation volume and flotation efficiency[J].Coal Preparation Technology,1989(3):47-49.
[15]王淀佐,胡岳华.浮选溶液化学[M].长沙:湖南科学技术出版社,1988.Wang Dianzuo,Hu Yuehua.Flotation Solution Chemistry[M].Changsha:Hunan Science and Technology Press,1988.
[16]冯其明,赵岩森,张国范.油酸钠在赤铁矿及磷灰石表面的吸附机理[J].中国有色金属学报,2012(10):2902-2907.Feng Qiming,Zhao Yansen,Zhang Guofan.Adsorption mechanisms of sodium oleate on surfaces of hematite and apatite[J].The Chinese Journal of Nonferrous Metals,2012(10):2902-2907.
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