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| 1 | Nanobubble generation and its application in froth flotation (part I): nanobubble generation and its effects on properties of microbubble and millimeter scale bubble solutions显示文摘A special nanobubble generation system has been developed for evaluating the effect of nanobubble on froth flotation. In this study, an eight-factor five-level Central Composite Experimental Design was conducted for investigating eight important parameters governing the median size and the volume of nanobubbles. These process parameters included surfactant concentration, dissolved oxygen (O2) content, dissolved carbon dioxide gas (CO2) content, pressure drop in cavitation tube nozzle, <50 nm hydrophobic particle concentration, <50 nm hydrophilic particle concentration, slurry temperature and the time interval after nanobubble generation. The properties, stability and uniformity of nanobubbles were investigated. The study of the produced nanobubble’s effects on the characteristics of microbubble solutions and millimeter scale bubble solutions was performed in a 50.8 mm column. | FAN Maoming TAO Daniel HONAKER Rick LUO Zhenfu | 2010 | Mining Science and Technology2010，20，1： | 34 |
| 2 | Nano-microbubble flotation of fine and ultrafine chalcopyrite particles显示文摘As is well known to mineral processing scientists and engineers, fine and ultrafine particles are difficult to float mainly due to the low bubble-particle collision efficiencies. Though many efforts have been made to improve flotation performance of fine and ultrafine particles, there is still much more to be done. In this paper, the effects of nano-microbubbles(nanobubbles and microbubbles) on the flotation of fine( 38 + 14.36 lm) and ultrafine( 14.36 + 5 lm) chalcopyrite particles were investigated in a laboratory scale Denver flotation cell. Nano-microbubbles were generated using a specially-designed nanomicrobubble generator based on the cavitation phenomenon in Venturi tubes. In order to better understand the mechanisms of nano-microbubble enhanced froth flotation of fine and ultrafine chalcopyrite particles, the nano-microbubble size distribution, stability and the effect of frother concentration on nanobubble size were also studied by a laser diffraction method. Comparative flotation tests were performed in the presence and absence of nano-microbubbles to evaluate their impact on the fine and ultrafine chalcopyrite particle flotation recovery. According to the results, the mean size of nano-microbubbles increased over time, and decreased with increase of frother concentration. The laboratory-scale flotation test results indicated that flotation recovery of chalcopyrite fine and ultrafine particles increased by approximately 16–21% in the presence of nano-microbubbles, depending on operating conditions of the process. The presence of nano-microbubbles increased the recovery of ultrafine particles( 14.36 + 5 lm) more than that of fine particles( 38 + 14.36 lm). Another major advantage is that the use of nano-microbubbles reduced the collector and frother consumptions by up to 75% and 50%,respectively. | Ahmadi Rahman Khodadadi Darban Ahmad Abdollahy Mahmoud Fan Maoming | 2014 | International Journal of Mining Science and Technology2014，24，4： | 28 |
| 3 | 振动参数对流化床分选性能的影响显示文摘干法分选对于缺水地区煤炭的加工十分必要,将振动外力场引入普通气固流化床,形成振动重介质流态化,在100 mm×100 mm×220 mm振动流化床装置上,通过分层采样分析,研究了振动及气流参数对分选效果的影响,结果表明:振动强度K对分选效果有显著影响,当K=1.63时,分选效果最佳,可能偏差E为0.07.因振幅改变引起的K的变化对分选效果的影响显著于因振动频率改变引起的K的变化对分选效果的影响.振动方向对分选效果也有较大影响,在分选状态下,垂直振动时的分选效果要优于水平振动.振动流化床的分选性能对气速u较敏感,当u=1.15 cm/s时,分选效果最佳.床层高度H愈低,分选效果愈好,但必须满足足够的分选空间,H应取75 mm. | 骆振福 Maoming FAN 陈清如 赵跃民 梁春成 陶秀祥 陈增强 | 2006 | 中国矿业大学学报2006，35，2： | 20 |
| 4 | Nanobubble generation and its applications in froth flotation(partⅢ):specially designed laboratory scale column flotation of phosphate显示文摘Froth flotation is used widely for upgrading raw phosphate.The flotation recovery of coarse phosphate(-1.18+0.425 mm) is much lower than that achieved on the-0.425+0.15 mm size fraction.Enhanced recovery of coarse phosphate particles is of great economic and environmental importance for phosphate industry.In this investigation,four different phosphate samples were aquired,characterized and tested in a specially designed laboratory-scale flotation column.Significant recovery improvement of coarse phosphate flotation was achieved using cavitation-generated nanobubble though its effects differ among the four testing phosphate samples.The laboratory-scale flotation column test results indicate that nanobubble increased P_2O_5 recovery by up to 10%~30%for a given Acid Insoluble(A.I.) rejection,depending on the characteristic of phosphate samples.The improvement effect of nanobubble on the hard-to-float particles was more significant than that on easy-to-float particles,especially at lower collector dosages.Nanobubbles reduced the collector dosage by 1/3 to 1/2.Nanobubbles almost doubled the coarse phosphate flotation rate constant and increased the flotation selectivity index by up to 25%. | FAN Maoming TAO Daniel HONAKER Rick LUO Zhenfu | 2010 | Mining Science and Technology2010，20，3： | 18 |
| 5 | Nanobubble generation and its applications in froth flotation(part IV):mechanical cells and specially designed column flotation of coal显示文摘Coal is the world's most abundant fossil fuel.Coal froth flotation is a widely used cleaning process to separate coal from mineral impurities.Flotation of coarse coal particles,ultrafine coal particles and oxidized coal particles is well known to be difficult and complex.In this paper,the nanobubbles' effects on the flotation of the varying particle size,particle density and floatability coal samples were evaluated using a bank of pilot scale flotation cells,a laboratory scale and a pilot scale specially designed flotation column.The parameters evaluated during this study include the flow rate ratio between the nanobubble generator and the conventional size bubble generator,the superficial air velocity,collector dosage,frother concentration,flotation feed rate,feed solids concentration,feed particle size,and the superficial wash water flow rate,etc.The results show that the use of nanobubbles in a bank of mechanical cells flotation and column flotation increased the flotation recovery by 8%~27% at a given product grade.Nanobubbles increased the flotation rate constants of 600~355,355~180,180~75,and 75~0 microns size coal particles by 98.0%,98.4%,50.0% and 41.6%,respectively.The separation selectivity index was increased by up to 34%,depending on the flotation feed characteristics and the flotation conditions. | FAN Maoming TAO Danie HONAKER Rick LUO Zhenfu | 2010 | Mining Science and Technology2010，20，5： | 18 |
| 6 | 物料在振动力场流化床中的分离显示文摘我国2/3以上的煤炭资源分布在西北等干旱缺水地区,煤炭的高效干法分选技术十分必要,基于振动流化床的分选特性,在80 mm×200 mm×2 000 mm连续式振动流化床分选系统上研究了不同条件下物料在床层中的分离规律及分选效果,结果表明:流化床的似流体特性、水平方向的激振力以及流化床的溢流作用是入选煤在床层中连续分层和移动的动因,在本试验条件下,振动方向α=40°,有效分选带长1 850 mm时,可以发挥振动流化床的最大分选效能,可能偏差E值达0.075,可以实现细粒煤的连续有效分选. | 骆振福 Maoming FAN 赵跃民 陶秀祥 陈增强 | 2007 | 中国矿业大学学报2007，36，1： | 15 |
| 7 | Effects of nanobubble and hydrodynamic parameters on coarse quartz flotation显示文摘Quartz, the second most abundant mineral in the earth's crust, is a gangue mineral in practically every flotation process. Coarse quartz flotation has been a long standing problem in various mineral processing plants to reduce milling cost and increase valuable mineral recovery. Based on this, the effects of nanobubbles(NBs) and hydrodynamic parameters on coarse quartz particle flotation were systematically investigated. Mechanical flotation experiments were carried out using the 7 cm and 9 cm diameter impellers in order to produce different hydrodynamic conditions. 900–1300 rpm impeller speeds were used for the 7 cm diameter impeller and 554–786 rpm for the 9 cm diameter impeller. The results show that the presence of NBs increased the flotation recovery of à425 + 106 lm quartz by up to 21%. For the7 cm diameter impeller, the maximum flotation recoveries of 86.4% and 98% were obtained in the absence and presence of NBs at Reynolds number(Re) of 81,000 and 66,000, respectively. For the 9 cm diameter impeller, the maximum recoveries of 86.3% and 97.5% were obtained in the absence and presence of NBs at Re of 90,000 and 75,000, respectively. NBs increased the flotation rate constant up to 36%. | Sabereh Nazari Sied Ziaedin Shafaei Mahdi Gharabaghi Rahman Ahmadi Behzad Shahbazi Fan Maoming | 2019 | International Journal of Mining Science and Technology2019，29，2： | 10 |
| 8 | Effects of magnetic field on fluidization properties of magnetic pearls显示文摘An experimental study of the influence of external magnetic field on the fluidization behavior of magnetic pearls was carried out. Magnetic pearls are a magnetic form of iron oxide that mainly consists of Fe2O3 which are recovered from a high-volume power plant fly ash from pulverized coal combustion. Due to its abundance, low price and particular physical and chemical properties, magnetic pearls can be used as a heavy medium for minerals or solid waste dry separation based on density difference. This paper introduces the properties of magnetic pearls and compares the performance of magnetic pearls fluidised bed operation with or without an external magnetic field. Experimental results show that an external magnetic field significantly improves the fluidization performance of magnetic pearls such as uniformity and stability. | Maoming Fan Zhenfu Luo Yuemin Zhao Qingru Chen Daniel Tao Xiuxiang Tao Zhenqiang Chen | 2007 | China Particuology2007，5，1： | 4 |
| 9 | SEOF Analysis on the Precipitation and Temperature in China during 1951-1999显示文摘[Objective] The research aimed to study the seasonal variation characteristics of precipitation and temperature in China during 1951-1999. [Method] Based on the monthly average precipitation and temperature data in 160 stations from January, 1951 to February, 1999, which were provided by China Meteorological Administration, the spatial-temporal variation characteristics of precipitation and temperature in 48 years were studied by using SEOF method. [Result] SEOF analysis of precipitation:SEOF analysis of the first modal showed the four-season propulsion of rain belt in China from south to north. Seen from the time coefficient, as a whole, the precipitation in China decreased slightly during the 1960s-1970s. After the 1970s, the precipitation had the increase trend and was the decrease trend after the 1980s. SEOF analysis of temperature:the first modals of precipitation and temperature configured well in the space. In the dry zone where the precipitation was less, the temperature variation was obvious. Seen from the time sequence, the temperature in China during 1951-1999 was low, and it was the low temperature period in the 1950s. The temperature rose slightly during the 1950s-1960s, and it entered into the low temperature period again from the middle and latter periods of 1960s to early the 1970s. From the metaphase of 1970s to the end of 1990s, the temperature increased relatively and stably. [Conclusion] The research provided the theory basis for studying the climate variation in China. | LIU Hua Maoming Meteorological Bureau in Guangdong Province, Maoming 525000, China | 2011 | Meteorological and Environmental Research2011，2，4： | 3 |
| 10 | Preparation of solid medium for use in separation with gas-solid fluidized beds显示文摘The highly-efficient dry separation technique using a gas-solid fluidized bed is very beneficial for increasing coal grade and optimizing the utilization of coal resources.The size distribution of the solid medium(e.g.,magnetite powder) used in this technique is one of key factors that influences fluidization and separation performance.It is,therefore,urgent to prepare medium in a way that operates at low cost and high efficiency.Grinding experiments were performed using a planetary ball mill equipped with a frequency converter.The effect of fed mass,rotation frequency of the mill,grinding time and the ball-size ratio on grinding performance was investigated.The grinding parameters were optimized by numerical calculations using Artificial Neural Network(ANN) in Matlab.A regression equation for predicting the yield of the desired product(i.e.,0.3~0.15 mm magnetite powder) is proposed.The maximum yield of 0.3~0.15 mm particles was 47.24%.This lays a foundation for the industrial-scale production of the solid medium required for separation with a magnetite-powder fluidized bed. | LUO Zhenfu ZUO Wei TANG Ligang ZHAO Yuemin FAN Maoming | 2010 | Mining Science and Technology2010，20，5： | 3 |
| 11 | Photocatalytic degrada- tion of gaseous organic species on photonic band-gap titania 显示文摘 | Ren Maoming Ravikrishna R Valsaraj K T | 2006 | Environmental Science & Technology2006，40，22： | 1 |
| 12 | Nanobubble generation and its applications in froth flotation (part II): fundamental study and theoretical analysis显示文摘 | Maoming FAN Daniel TAO Rick HONAKER Zhenfu LUO | 2010 | Mining Science and Technology (China)2010，，2： | 1 |
| 13 | Two-phase region in the DTAB/SL mixed surfactant system显示文摘 | YINH MAOM HUANGJ etal | 2002 | Langmuir2002，18，： | 1 |
| 14 | Diagnosis of acute appendicitis:Value of unenhanced CT显示文摘 | Malone AJ Wolf CR Maomed AS | 1993 | AJR Am J Roentgenol1993，160，4： | 1 |
| 15 | Preparation of solid medium for use in separation with gas-solid fluidized beds显示文摘 | Zhenfu LUO Wei ZUO Ligang TANG Yuemin ZHAO Maoming FAN | 2010 | Mining Science and Technology (China)2010，，5： | 1 |
| 16 | Density-dependent separation of dry fine coal in a vibrated fluidized bed显示文摘 | Zhenfu Luo Maoming Fan Yuemin Zhao Xiuxiang Tao Qingru Chen Zengqiang Chen | 2008 | Powder Technology2008，，2： | 1 |
| 17 | Assessment on Commercial Application of Novel S-RHT Catalysts显示文摘This article refers to the commercial application assessment of the novel S-RHT catalysts.The application outcome has shown that the catalysts loading was reduced with its performance kept at the original level at the initial and middle stages of operation. The performance of catalysts at the end of operation was analyzed, and factors affecting the performance of the novel catalysts at the end of run were identified to facilitate further improvement of the said catalysts. | Bian Fengming Wen Huixin(East-China University of Sceince and Technology, Shanghai 200237 2.SINOPEC MaomingBranch Company, Maoming 525011) | 2004 | China Petroleum Processing & Petrochemical Technology2004，6，1： | 1 |
| 18 | Overexpression of edg-2/vzg-1 induce apoptosis and anoikis in ovarian cancer cells in a lysophosphatidic acid-independent manner显示文摘 | Lapushin R Maom | 1999 | Clin Cancer Res1999，5，： | 1 |
| 19 | 显示文摘 | Maoming Petchem may build PVC plant | 2002 | Asian Chemical News2002，8，366： | 1 |
| 20 | Complicated motion of particles on vibration screen surface 显示文摘 | ZHAO Yuemin LIU Chusheng FAN Maoming | 1999 | Transaction Nonferrous Metals Society of China1999，9，4： | 1 |
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