首先你是干什么用。 如果是要省级的话我有几个 很好发! 华北国土现代矿业都很好发。
以前在学校,要保送研究生的话,都要求在省级刊物上发表过论文才行。那时听说有些刊物是可以“潜规则”的,交钱,交文章就可以发表。可以尝试在你的目标刊物上找该发行商家的联系方式,或者联系下亲戚朋友中还在高校读书的孩子们,让他们帮忙通过学校的导师联系下也可以哦
给你几个不同层次的:吉林大学的《世界地质》,还有吉大、地大、北大、东北大学学报,这几个学校都有地质。除了世界地质以外都是中文核心期刊。《金属矿山》、《中国矿业》这两个都比较边缘,文章质量要求也不算太高,很容易发。《地球物理学进展》这个比较难发表一点,他的英文版《地球物理学报》应该是中国地质类期刊中SCI影响因子最高的了。还有你可以去CNKI,一般的高校网上图书馆都有入口,可以轻松查到上百中地质杂志。其实发表文章说白了就那么回事,发表了基本上没人看,也就自己图新鲜,看看自己的名字,如果不是那些非要找抄袭的JR,基本上没人仔细看,经历了硕博发论文的阶段后,猛然回头发现都是给钱就发的事,什么这编辑那编辑,P,强烈鄙视他们,一个个见到钱,垃圾都有创新意义。
省级期刊省级期刊指由各省、自治区、直辖市及其所属部、委办、厅、局主办的期刊以及由各本、专科院校主办的学报(刊)。国家级期刊国家级期刊指由国家部委、全国性团体、组织、机关、学术机构主办的刊物。核心期刊目前国内有7大核心期刊(或来源期刊)遴选体系,凡是这些来源期刊目录里有的刊物均可认为核心期刊,包括北京大学图书馆“中文核心期刊”、南京大学“中文社会科学引文索引(CSSCI)来源期刊”、中国科学院文献情报中心“中国科学引文数据库(CSCD)来源期刊”、中国科学技术信息研究所“中国科技论文统计源期刊”(又称“中国科技核心期刊”)、中国社会科学院文献信息中心“中国人文社会科学核心期刊”、中国人文社会科学学报学会“中国人文社科学报核心期刊”、万方数据股份有限公司正在建设中的“中国核心期刊遴选数据库”。
我是一名选矿工程师,如果你是选矿的学生,那你将来也要成为一名选矿工程师。凭我短短工作的经验来看,你还是自己写比较好。你毕业论文是褐铁矿的选矿工艺研究,肯定是有相应的试样来做实验。毕业论文要答辩,问你的问题如果不是自己做的实验是完全不能给出自己的回答和结论的。我只能给你一个提纲,在根据你导师的要求去完善。第一,如果是地下直接取来的岩心样的话,说明试样来自哪里,哪里的地理位置(如果用某地,那你自己斟酌),相关的地理材料,如果是从选厂来的试样,说明选厂情况。第二,试样性质,包括多元素分析,粒度分析,物相分析,有岩矿鉴定或者工艺矿物学报告更好(就是表格),给出自己对矿样性质的结论,这个是知道试验方案的依据。第三,你的试验方案,准备采用什么方法,用什么工艺来做试验,准备达到什么样的目的(磁-重,磁-重-浮等)。第四,你提出几个方案,就要有几个方案的结果,这个是必须的,只有经过比较,才能得出好的结果。(包括你的工艺流程,数质量流程图,回收率,药剂用量表等)。采用经过比较的方案,给出自己的结论。第五,总结,终结方案的优缺点,适用性,工业生产的可行性,选矿成本,效益等。如果需要还要加上选矿试样是怎么制备的,总试验的指标等。我相信选矿可行性研究教科书上写的很明白。如果你明白了试验的流程和方法,比一篇论文更重要,至少你出来第一年的工作会相对顺利。一篇不是自己了解的论文是经不起拷问的。你为什么定这个浮选浓度?磁选强度是怎么定的?作业回收率为什么低为什么高?为什么采用这个工艺?为什么是这个富集比?为什么精矿质量上不去?如果有伴生有用矿物怎么回收?因为我也答辩过,呵呵!
因为字数超过一万字了 所以中文里稍微删减了一点 反正你是写英文的对吧 只看下面英文就行了关于磁电选矿相关应用的论文根据矿石中不同矿物的物理、化学性质,把矿石破碎磨细以后,采用重选法、浮选法、磁选法、电选法等,将有用矿物与脉石矿物分开,并使各种共生的有用矿物尽可能相互分离,除去或降低有害杂质,以获得冶炼或其他工业所需原料的过程。关于磁选设备的进展,已有若别,在物料中加选矿使有用组分富集,减少冶炼或其他加工过程中的燃料、运输等的消耗,使低品位的贫矿石能得到经济利用。选矿试验所得数据,是矿床评价及建厂设计的主要依据。从脉石中有时从其他矿物中分选出金属矿物或有价值的别种矿物的机械加工方法.With regard to the application of magnetic beneficiation related papersAccording to the different mineral ores physical, chemical nature of the ore broken ground, the use of re-election law, flotation, magnetic separation method, electricity election law, will be useful minerals and gangue mineral separately, and a variety of symbiotic useful minerals as far as possible, separate, remove or reduce harmful impurities in order to obtain smelting or other industrial raw materials needed to process. With regard to the progress of magnetic separation equipment, are already a number of specialized assessmentReference 〔 'a 41, here only collected on a magnetic separation and informationComprehensive comments.1.1 weak magnetic characteristics of the progress of low intensity magnetic separation is to useHigh-performance chin iron boron magnets to create a higher field-strength magnetic drumElection machine, drum magnetic separator and pre-selection of large chunk magnetiteStone, the development is conducive to improve the concentrate grade of weak magnetic separator.Chin iron boron magnets (Nd: Fel knife) is the largest energy product can beTatsu 3.18X10 "(T A / m), about drilling alloy shirt(SmCo.) Maximum energy product (1.59X10 "T A / m) ofz-fold [51, silver ferrite (Sro.6Fe20,) the largest energy product(0.326X105T A / m) 10 times. Therefore, the use ofChin-Fe-B Magnetic Separator line easy to raise the field strength and performance.Germany, for example, with hinge rod iron boron permanent magnet developed 'Permos'Drum magnetic separator magnetic induction of up to 0.4 ~ 0.5T,Materials can be used wet-dry election or an election can also be more idealStrong magnetic separator used to remove material to a strong magnetic materialQuality 〔6 '. British Boxmag - Rapid Rail Limited with hingeBoron magnets developed 'Magnadrum' Drum SeparatorMagnetic field up to 0.3 ~ 0.4T, for sorting industrial mineralsAnd abrasive powder 〔 'J. As equipment such as large-scale examples, IState Institute of Ma On Shan mine CTDG1210 following the development of largeDiameter magnetic separator, he developed a greater CTDGIS16 typeDiameter of the magnetic separator [3], the use of money-Fe-B magnetic system, cylinder surface-pingBoth the magnetic field up to 0.4T, for sorting large magnetiteShek. Anshan Black Design and Research Institute of Mining and Metallurgy Shandong Zhang家洼cooperation in the development of iron ore a price 1400mmx1600mm electromagnetic water-cooled magnetic pulley 【.〕, the average magnetic field for the cylinder surface0.24T, handling capacity up to 200t / h, used for pre-selectionOne of the magnetite 350mm stone, eight months from the original 667,000 tExcluding iron ore 11.97% of the 75,000 t tailings, a total increaseEconomic benefits of 534,200 yuan. In order to improve the sorting equipmentThe effect of the comprehensive utilization of mineral emei Institute conventional magnetic separationTrough improve magnetic 〔a re-election machine,〕 its groove from the upper body coneCylindrical-shaped change, permanent magnetic ferrite by the lower part of Round TowerShape changed to the upper part of the overall magnetic lines scattered formation of multi-storey circular magnetic system,Field strength distribution of 12 ~ 0kA / m, and equipped with the concentration of self -Control system can be sub-constituency pulp concentration of control in 30% ~Between 35 percent, the device in the application of Shougang Qian'an Iron effectFruit is: with the improvement of processes, improved sorting tabletsDegrees, with the previous fine sieve fine grinding process compared to that in millCapacity, concentrate grade and iron recovery under the same conditions,Increased the production capacity of 27.66%. This equipment has been developedFor the price 300,600,1500,1800,2500 mm SeriesProducts. In order to improve the concentrate grade, Beijing Mining and Metallurgical Research totalHospital developed a Bk a drum magnetic field more than 1021〔Kawasaki machine. It adopted a very open 7 magnetic lines and downstream type electionBox, fill in the election together with me in Central and exclusive premium coarse tailings,Feeder terminal located in the overflow weir and exclusive fine-grained tailings, so that shipped with the tubeLine of magnetic material has always been the reverse flow of cleanAchieve the purpose of concentrate grade. The aircraft in Nanfen Iron MineConcentrator industrial test results show that with the price 105Ommx21OOmm half compared to current-type magnetic separator, a high concentrate grade2.04 percent, sorting efficiency 10.28%, while the magnetic iron backLow yield of only 0.19 intestine.It is worth noting that the former Soviet Union to study electrochemicalLaw regulating the process of strengthening the magnetic 'Kawasaki. Research in the laboratory doSet of refractory ores and oxide ores, the first paragraph of the low intensity magnetic separationBefore using the electrode of the role of the most promising, concentrate grade will be provided as1.1% ~ 1,4%, iron recovery rate of 4.5 percent raise, 6.4%, Weak magnetic separation tailings in strong magnetic regulated before, ironAnd improve the recovery rate of l%, 2.4%. Easy selection of ore,Polarization effect, the first and the second paragraph of the magnetic iron recoveryRates were increased by only 0.2%, 2.8% and 0.1% ~ 2Called. It is believed that the effect is due to the different nature of the ore, magneticOf different intensity and mineral composition. Also as a result of ore oxygenSubstances fixed potential value and exchange current value and restore the cathodeResponse to the current limit of different degrees.1.2 Strong magnetic strong magnetic equipment were limited mainly toPermanent magnet and electromagnetic roller or belt strong magnetic separator. BritainRapid Ltd. BOxmag with a hinge iron boron permanent magnet systemCreating a 'Magnaroll' Roll Magnetic Separator [ '〕, including the roll diameterGong Gong 75mm and 100mm in two specifications, respectively, for the OfficeThe rationale for fine-grained and coarse-grained materials. It is expected to pass an area of the magnetic fieldOften for the 0.9 ~ 1.0T, and loop generated by the high gradient,Sorting performance roller magnetic induction machine is superior, the typical applicationIncluding the purification of silica sand and feldspar, improve the quality and Tao AndalusiteFine porcelain material dry iron. The former Soviet Union developed a rotating magneticField Separator roller 〔 ',,, also known as electric sorting device. TheMain loser is expected by the belt and with the following configuration and with parallelConstitute a permanent magnet roll. Magnetic roller by the permanent magnet composed of three parts, inPermanent magnet poles of the Ministry of Law and roll to the vertical axis, before and after the permanent magnetBody of law to the magnetic axis and roll into a 45 "angle, forming the same levelFace in three directions of the magnetic field, magnetic field for the roll surface 0.45T. PointsElectoral principle is the use of non-magnetic conductive particles in rotating magnetic rollerRotating magnetic field generated by the driving force for transforming the role of pay and non-derivativeXinhua particle separation of aircraft being used for non-ferrous metal processing residue fromRecovery of scrap and waste aluminum, copper and other metal particles, conductor productionPurity and recovery of goods are up more than 94 percent. China's MaHill Mining Research Institute, following the development of Cs-1-type roller magnetic separatorAfter the development of a Cs-2 electromagnetic induction strong magnetic rollerMachine 〔''], the roll diameter and effective length of 380mm were smartAnd 1468mm, parallel twin-roll configuration, with a total of four sub-election,Magnetic field can be between 0.4 ~ 1.78T regulation, excitation, ChuanActin and were air-cooled power 4.23kw, 13xZkw and0.09 justice Zkw. The aircraft used in Meishan Iron sorting 12 ~Chek Ling ZMM one of the indicators of iron ore is iron ore30.40%, the concentrate grade and recoveries were44.05% and 78.75%, a single-year cost-effective equipmentFor 630,000 yuan. With different roller magnetic separator. Ferromagnetism with teethBoard or the ball wet media as a result of strong magnetic separator structure is complicated,High cost, coupled with the type of large development remains is to promoteApplications and improve and perfect. SHP a strong magnetic separator 2000In Qidashan Iron Ore has been applied 〔'' ', SQC-6 -2770-type strong magnetic separator in Masteel satisfied people Gushan Iron Mine production flowCheng, Gong-1500 Shuangli Central strong magnetic separator further in Kunming SteelBy the popularization and application of 〔'5] SHP-keung, a 3200-type magnetic separatorThe improvements include 〔'']: magnetic angle from 83 "to 70., MagnetizingCoil replaced by the air-cooled, such as oil-cooling. Rather meaningful is that QueenslandSteel plate medium level of tooth ring magnetic separator and the ball vertical ring magnetic mediaMachine with the same test sample were compared [1 '〕, the results of tableThat the tooth plate flat ring of iron concentrate grade and recoveries wereAbout 4% and 8%, but the vertical ring-type magnetic properties as a result of the reverse flushingMaterial, which is not easy to plug for the screening, the following rough, rinse waterPressure and lack of strict water quality requirements, more reliable operation.1.3 HGMS in the magnetic field of high gradient magneticStudy of the election is still occupies an important position, and made significant JinExhibition. Svoboda described a new type of high gradient magnetic separatorI''〕 plane, the aircraft using short-term water-cooled magnetic coil system, the magnetic field for1.ZT, input power 110kw, from South Africa University of theWitwatersrand gold and uranium tailings recovery, capacity 30t / h. FormerThe Soviet Union the new joint company克里沃罗格selection and black metalBeneficiation Research Institute developed a 600-type 3KM small magneticSorting machine 〔 'Lu'. Kai loaded aircraft using electromagnetic magnetic lines and mesh135 ~ x51 ~ punching screen for sorting media magnetic induction for the 0.5T, processing capacity of up to 30Ot / h, forEnterovirus 95 to deal with a fineness of 0.045 magic. N edge of the iron oxide stoneRock. Copper-rich Zambia's high gradient magnetic separator toTo the attention recently with the background magnetic field 1.3T, sorting cans footInch 23mmx32mmx104mm (effective volume 42ml,Filling 5% 50 ~ 10, that is, steel wool m high horizontal magnetic field gradientMagnetic devices, to 5 ~ 38 al m ore of copper concentrate and madeExperimental research on t ',', in the feed flow rate of 7cm / s and cleaning velocity14cm / s under the conditions of separation twice before a magnetic productsChalcopyrite and bornite content from 72 to 86 percent called backThe yield was 82%; after a magnetic products, copper contentFrom 16%.Increased to 44 percent, and the recovery was 72 enterovirus. In China,HGMS who has been cross-industrial applications period, workers from China and South AfricaIndustry, universities and Ganzhou, Jiangxi Institute of cooperation in the development of nonferrous metallurgyThe SLON a 1000 vertical ring pulsating high gradient magnetic separator has beenThe development of a r500 type SLON 〔 '. ', Its diameter by sorting1ooomm to 150omm, mail handling capacity t / h to30t / h, and structural improvements, performance has increased, the firstTaiwan SLON a 1500-type magnetic separator installed in 1989 regardlessMountain iron ore, to deal with slime and strong magnetic separation tailings, such as fine-grained RefractoryMixed materials, the original estimated annual economic benefit is 1.06 million yuan'''',Inter reached 1.08 million yuan. Passed technical appraisal in 1990 afterThe mine has ordered a 1500-type SLON a pulsating high ladderSeparator degrees. The past two years, also iron ore and copper GongchanglingCopper applications were recorded in the five and a one SLON1500 vertical ring pulsating high gradient magnetic separator. On the pulse of high-OssetiaMagnetic principle degrees were also made to further explore 〔 "]. Zhongnan EngineeringIndustry University of Pangushan Tungsten fine mud of pulsating high gradient magnetic separator testA post-mortem studies also received a good indicator of 'Chuan: containing the WO30.74%Tungsten fine mud at the right time under the conditions of separation, to be with WO3Volume of 17.90 percent and 73.78 percent recovery rate of Scheelite; and non -Pulsating high gradient magnetic separator compared to the high concentrate grade 13.99%,The recovery rate was only 1.09 percent lower. By the Central South University and aldehyde hillsMunicipal Science and Technology Development Center, developed in cooperation CL Kazunori 500mmVibration cycle high gradient magnetic separator''〔 "to fill China's highRidge soil HGMS blank. It's tank tracks and well-differentiatedDo not for 500mm and 300mm, the magnetic field up to ZT, power consumptionAbout 220kw, handling about Zt / h. Industrial tests showed thatIt's exciting and good cooling performance, can effectively remove highRidge soil micro-paramagnetic iron particles, a significant increase in high -Ridge soil and into a white porcelain, can produce better economic and socialEffectiveness.On the high gradient magnetic separation theory, since 1973Watson made a number of magnetic particle collector concept 〔25 'have beenEstablished a fairly complete theory of magnetic collector. Recently,Svoboda, who according to the energy point of view to explore the high gradientNew theory of magnetic collector 〔26]. In his view, the paramagnetic particles inHigh gradient magnetic field and magnetic wire trap with a collision withSome of the overall role in a London for the role of van der Waals energy, double -Layer energy, with an average energy and shear stress on the particles ZuogongAnd of and derived by medium particle collector wire radius(Limited to particle size) and particle magnetization coefficient, strong magnetic fieldDegrees, medium wire magnetization and radius, fluid velocity and densityDegrees and the viscous coefficient of the relationship.1.4 superconducting magnetic superconducting magnetic separation has been into the large-scale chemicalIndustry application period. Eriez Magnetic company, following the United States in 1986Will be re-25 leaves, a diameter of 2134mm Tank superconducting magnetic separatorJ. M. Huber Corporation for kaolin processing plant purification of high -Ling soil after less than a year, the same company also ordered aRe-250t, the diameter of 3048 blade n Magic a similar superconducting high gradientSeparator 〔Sichuan, when the aircraft is being created, he orderedThird such equipment, according to plan was the first quarter of 1990Degrees installation operation. This is the world's largest superconducting magnetic separationMachines, superconducting magnet with a Nb叭Wirewound system, liquid helium coolingTo a 269 ℃, only the beginning of each cycle supply excitationCurrent, in 60 seconds, zero magnetic field can be increased to ZT, RanAfter having been able to maintain foreign to ZT magnetic field, weeks at the end of clearanceClosed, the magnets' return 'of power is about to start when the' through to 'Half power. The cost of superconducting magnetic than ordinary high gradient magneticSlightly more elections, the second piece of equipment production costs than the firstTaiwan slightly more. Germany KHD Humboldt has韦达格Will be a superconducting Descos sold Drum Separator TurkeyIts 〔:'3, used to a weak magnetic serpentine gangue and magnesiumMineral separation, ore particle size of 100 ~ 4 magic n magic. , Containing about 510220%, FeZ034 intestines, including stem-election once was 510:1.5% And Fe: O, 0.3% of magnesite concentrate rough. AircraftSpecifications for the price 120OmmxI500mm, the magnetic field up to 3.2T, the handling capacity of 10 belly / h, power consumption is about 1.skw h / t,Is one of the world's first for the coarse-grained superconducting magnetic separationMachine. Now expect the 'high temperature' superconductors to develop third-generation super -Magnetic sorting machine "'91.2 electric electionKelly and Spottiswood three papers with a comprehensiveReview of the theory of separation. The first review of the basis of principle,Including electrostatics; particle characteristics, namely, particle conductivity(Band theory, electron capture and other forms of electrical conductivity),The surface of semiconductor electronics in nature: particles or metal contactsThe equivalent circuit, fluid particle motion. The second assessmentDescribes the measurement of electrical particles and particle charge mechanism. XinhuaElectric field measurement, including measurement, Dutch power measurement, contact chargeCumulative volume measurement and conductivity measurement. Dutch electrical particles rationale packageIncluding corona charging, induction charging, friction charge, charge rate,Coehn law. The third review of the practice of electrostatic beneficiation,Including electrostatic concentrator theoretical analysis (stress analysis), StaticXinhua concentrator analysis of the experience, equipment parameters, sorting circuit,Three papers related to the literature 95. Xinhua election on I:. Arts andThere are some theoretical research reports. Additives have been used abroadA large amount of friction method charge at KCI and NaCIFrom. The Act the use of KCI and NaCI friction charged the differenceDo not, in the amount of materials in adding additives. So that the mobileLayer belt during transport friction charged, and then sorting machineKCI in a concentrate, KCI up to 92% concentrate grade, recoveryRate of 50%. A.L. Shalom and others discussed the non-allUniform electric field separation of the exchange of technology for liquid and gas media articlePieces under the sorting mechanism "in Sichuan, the establishment of electric field strength, the NetherlandsElectricity and Coulomb force and the ratio of inertial force of expression.Dressing to make a useful component enrichment, reducing smelting or other processing of fuel, transport and so on consumption, so that the poor low-grade ore will be economic use. Beneficiation test of the data is the deposit rating and the main basis for plant design.From the gangue minerals are sometimes separated from other selected metal minerals or other valuable minerals machining methods.
1磁选关于磁选设备的进展,已有若干专门评述〔’一41,这里仅就搜集到的磁选论著和信息进行综合评述.1.1弱磁选弱磁选进展的特点是,利用高性能钦铁硼永磁体制造场强更高的筒式磁选机,筒式磁选机大型化和预选大块磁铁矿石,发展有利于提高精矿品位的弱磁选机。钦铁硼永磁体(Nd:Fel刀)的最大磁能积可达3.18X10“(T·A/m),约为衫钻合金(SmCo。)最大磁能积(1.59X10”T·A/m)的z倍[51,银铁氧体(Sro.6Fe20,)最大磁能积(0.326X105T·A/m)的10倍。因此,采用钦铁硼磁系容易提高磁选机的场强和性能。例如,德国用铰铁硼永磁棒研制的‘Permos’鼓式磁选机的磁感应强度可达0.4~0.5T,既可用于物料的干选或湿选,也可比较理想地用于除去强磁选给料中的磁性较强的物质〔6’。英国Boxmag--Rapid有限公司用铰铁硼永磁体研制的‘Magnadrum’筒式磁选机的磁场可达0.3~0.4T,用于分选工业矿物和磨料粉〔’J。作为设备大型化的例子如,我国马鞍山矿山研究院继开发CTDG1210型大筒径磁选机后,又研制了CTDGIS16型更大筒径的磁选机[3],采用钱铁硼磁系,筒面平均磁场可达0.4T,用于分选大块磁铁矿石.鞍山黑色冶金矿山设计研究院与山东张家洼铁矿合作研制了一种价1400mmx1600mm电磁水冷磁滑轮【.〕,筒面平均磁场为0.24T,处理能力可达200t/h,用于预选一350mm的磁铁矿石,8个月内从66.7万t原矿剔除含铁11.97%的7.5万t尾矿,共增加经济效益53.42万元。为了提高设备的分选效果,峨嵋矿产综合利用研究所将常规磁选槽改进为磁一重选机〔,〕,其槽体上部由圆锥形改为圆筒形,永磁铁氧体磁系由下部圆塔形整体磁系改为上部多层圆阵形分散磁系,场强分布为12~0kA/m,并配备浓度自控系统,可将分选区矿浆浓度控制在30%~35%之间,该设备在首钢迁安铁矿应用的效果是:配合改进工艺流程,提高了分选粒度,与以往细磨细筛工艺流程相比,在磨机容量、精矿品位和铁回收率相同的条件下,提高了生产能力27.66%.这种设备已发展为价300、600、1500、1800、2500mm系列产品。为了提高精矿品位,北京矿冶研究总院研制了一种Bk一1021多力场筒式磁选机〔川。该机采用7极开放磁系和顺流型选箱,在选箱中部补加上升水和排粗粒尾矿,在给料端设溢流堰和排细粒尾矿,使随筒运行的磁性物始终受到反向水流的清洗作用,达到提高精矿品位的目的。该机在南芬铁矿选矿厂的工业试验结果表明,与价105Ommx21OOmm半逆流型磁选机相比,精矿品位高2.04%,分选效率高10.28%,而磁性铁回收率只低0.19肠。值得注意的是,前苏联研究了用电化学调节法强化磁选过程‘川。在实验室研究确定,对难选矿石和氧化矿石,第一段弱磁选前采用电极化作用最有前途,精矿品位可提高1.1%~1,4%,铁回收率提高4.5%、6.4%,弱磁选尾矿在强磁选前再进行调节,铁回收率又可提高l%、2.4%。对易选矿石,极化作用后,第一段和第二段磁选的铁回收率只能分别提高0.2%、2.8%和0.1%~2叫。据认为,效果不同是由于矿石性质、磁化强度和矿物组成不同.还由于矿石中的氧化物的固定电位值和交换电流值及还原阴极反应电流的极限度不同。1.2强磁选强磁选设备的研制主要限于永磁和电磁辊式或带式强磁选机。英国BOxmag一Rapid有限公司用铰铁硼永磁体制造了‘Magnaroll’辊式磁选机[‘〕,包括辊径功75mm和功100mm两种规格,分别用于处理细粒和粗粒物料。它在给料带面的磁场通常为0.9~1.0T,并可由回路产生高梯度,分选性能比感应辊式磁选机优越,典型应用包括提纯硅砂和长石,提高红柱石质量和陶瓷细粒干料除铁。前苏联研制了一种旋转磁场辊式磁选机〔‘,,,又名电动分选装置。该机主要由输料带和带下面的与带平行配置的永磁辊构成。磁辊由三部分永磁体组成,中部永磁体的磁极法向与辊轴垂直,前后永磁体的磁极法向与辊轴成45“角,形成同一平面三个方向的磁场,辊面磁场为0.45T。分选原理是,利用非磁性导电颗粒在旋转磁辊产生的旋转磁场中受交变电动力作用与非导电颗粒分离该机被用于从有色金属加工渣屑和废料中回收铝、铜等金属颗粒,导体产品纯度和回收率都可达94%以上。我国马鞍山矿山研究院继开发Cs一1型辊式磁选机后,又研制了Cs一2型电磁感应辊式强磁选机〔’‘],其辊径和有效长度分别为叻380mm和1468mm,双辊平行配置,共四个分选带,磁场可在0.4~1.78T之间调节,激磁、传动和风冷功率分别为4.23kw、13xZkw和0.09义Zkw。该机在梅山铁矿用于分选12~Zmm赤一菱铁矿石的指标是,原矿含铁30.40%时,精矿品位和回收率分别为44.05%和78.75%,单台设备的年经济效益为63万元。与辊式磁选机不同。带铁磁性齿板或球介质的湿式强磁选机由于构造复杂,造价高,加之类型较多,发展的任务仍是推广应用和改进完善。SHP一2000型强磁选机在齐大山铁矿得到了应用〔’‘’,SQC一6一2770型强磁选机在马钢姑山铁矿纳人生产流程,功1500型双立环强磁选机在昆钢进一步得到了推广应用〔‘5]SHP一3200型强磁选机的改进包括〔’‘]:磁包角由83“改为70。,激磁线圈由风冷改为油冷等。颇有意思的是,昆钢对齿板介质平环磁选机和球介质立环磁选机用相同试料作了对比试验[1’〕,结果表明,齿板平环型的精矿品位和铁回收率分别约高4%和8%,但立环型由于反向冲洗磁性物,因而不易堵塞,对隔渣、隔粗、冲洗水压和水质要求不严,运行更加可靠。1.3高梯度磁选在磁选领域,对高梯度磁选的研究仍占有重要位置,并取得了显著进展。Svoboda叙述了一种新型高梯度磁选机I‘’〕,该机采用短线圈水冷磁系,磁场为1.ZT,输人功率110kw,用于从南非威特沃特斯兰德残渣中回收金和铀,能力为30t/h。前苏联新克里沃罗格采选联合公司和黑色金属选矿研究院合作研制了3KM小一600型磁选机〔‘吕’。该机采用恺装电磁磁系和网眼135~x51~冲孔网板作分选介质磁感应强度为0.5T,处理能力可达30Ot/h,用于处理细度95肠一0.045幻。刃n的氧化铁石岩。铜矿资源丰富的赞比亚对高梯度磁选给予了重视,最近用背景磁场1.3T、分选罐尺寸23mmx32mmx104mm(有效容积42ml、充填5%50~10即m钢毛的横向磁场高梯度磁选装置,对5~38拜m的铜精矿和原矿作了试验研究t‘,’,在给料流速7cm/s和清洗流速14cm/s条件下分选二次,前一种磁性产品的黄铜矿和斑铜矿含量由72叫提高到86%,回收率为82%;后一种磁性产品的铜矿物含量从16%.提高到44%,回收率为72肠。在国内,高梯度磁选已跨人工业应用时期,由中南工业大学和江西赣州有色冶金研究所合作研制的SLON一1000型立环脉动高梯度磁选机已发展为SLON一r500型〔’。’,其分选环直径由1ooomm增至150omm,处理量邮t/h提高到30t/h,且结构有所改进,性能有所提高,第一台SLON一1500型磁选机于1989年安装在姑山铁矿,处理矿泥和强磁选细粒尾矿等难选混合物料,原预计年经济效益106万元‘’‘’,实际达到了108万元。1990年通过技术鉴定后,该矿又订购了一台SLON一1500型脉动高梯度磁选机。近两年来,还在弓长岭铁矿和铜录山铜矿分别应用了五台与一台SLON一1500型立环脉动高梯度磁选机。对脉动高梯度磁选原理也作了进一步探讨〔”]。中南工业大学对盘古山钨细泥的脉动高梯度磁选试验研究也获得了好指标‘川:含WO30.74%的钨细泥在合适条件下分选一次,得到WO3含量17.90%和回收率73.78%的钨精矿;与非脉动高梯度磁选相比,精矿品位高13.99%,回收率只低1.09%。由中南工业大学和醛陵市科技开发中心合作研制的CL一功500mm周期式振动高梯度磁选机〔’‘」填补了我国高岭土高梯度磁选的空白。该机的罐径和高分别为500mm和300mm,磁场可达ZT,耗功率约220kw,处理量约为Zt/h。工业试验表明,该机的激磁和冷却性能良好,能有效除去高岭土中的含铁顺磁性微细颗粒,显著增加高岭土和成瓷白度,可产生较好的经济和社会效益。关于高梯度磁选理论,自1973年Watson提出磁捕收颗粒数概念〔25’以来,已建立了相当完整的磁捕收理论.最近,svoboda等人根据能量观点,探讨了高梯度磁捕收新理论〔26]。他认为,顺磁性颗粒在高梯度磁场中与铁磁性捕集丝相碰撞时,具有的总作用能为范德华一伦敦作用能、双电层作用能、平均磁能和剪切应力对颗粒作功之和,并由此导出被介质丝捕收的颗粒半径(限定颗粒粒度)与颗粒磁化系数、磁场强度、介质丝磁化强度和半径、流体速度和密度及粘性系数等的关系式。1.4超导磁选超导磁选已进人大型化工业应用时期。美国Eriez磁力公司继1986年将重25叶、直径为2134mm罐式超导磁选机用于J.M.Huber公司高岭土加工厂提纯高岭土后,不到一年,同一公司又订购了一台重250t、直径3048刃n幻a的同类型超导高梯度磁选机〔川,当该机正在制造时,又订购了第三台这种设备,按计划已于1990年第一季度安装运转。这是世界上最大的超导磁选机,超导磁体用Nb一叭线绕制,液氦冷却至一269℃,只需每个周期的开头供给激磁电流,在60秒内,磁场可由零升至ZT,然后不需外电能仍能维持ZT磁场,周期末关闭时,磁体‘归还’的电能约为启动时‘借去’电能之半。超导磁选的成本比普通高梯度磁选稍高些,第二台设备的生产成本又比第一台稍高些。德国KHD洪堡·韦达格公司已将一台Descos超导筒式磁选机售给土耳其〔:‘3,用于将弱磁性的蛇纹石脉石与菱镁矿分离,原矿粒度为100~4幻n幻。,约含510220%、FeZ034肠,干选一次得含510:1.5%和Fe:O,0.3%的菱镁矿粗精矿。该机的规格为价120OmmxI500mm,磁场可达3.2T,处理量为10肚/h,能耗约为1.skw·h/t,是世界上第一台用于粗粒分选的超导磁选机。现在期望用‘高温’超导体开发第三代超导磁选机「‘91。2电选Kelly和Spottiswood用三篇论文全面评述了电选理论。第一篇评述了基础原理,包括静电学;颗粒特性,即颗粒导电率(Band理论、电子捕获和其它形式的导电),半导体的表面电子学性质:颗粒或金属接触的等效回路,流体中的颗粒运动。第二篇评述了颗粒电性的测量和颗粒荷电的机理。电性测量包括电场测量,荷电量测量,接触荷电量累计测量和导电率测量。颗粒荷电机理包括电晕荷电,感应荷电,摩擦荷电,荷电速率,Coehn法则。第三篇评述了静电选矿实践,包括静电选矿机的理论分析(受力分析),静电选矿机的经验分析,设备参数,分选回路,三篇论文涉及95篇文献。关于电选的I:.艺和理论研究也有一些报导。国外有人用添加剂产生大量摩擦电荷的方法将KCI与NaCI分离。该法利用KCI与NaCI摩擦带电的差别,在物料中加人适量添加剂.使之在流动层皮带运输过程中摩擦带电,然后在分选机中得KCI精矿,KCI精矿品位可达92%,回收率为50%。A.L.沙洛姆等人探讨了将非均匀交流电场分离技术用于液体和气体介质条件下的分选机理「川,建立了电场强度、荷电量和库仑力与惯性力之比的表达式。
中国非金属矿工业导刊是国家级非金属矿行业期刊,中国科技核心期刊,《中国科学引文数据库(CSCD)》来源期刊,中国学术期刊综合评价数据库统计源期刊,中国期刊全文数据库全文收录期刊,中国核心期刊数据库全文收录期刊。欢迎关注中国非金属矿工业协会矿物加工利用技术专委会门户网站——中国粉体技术网!
中国非金属矿工业导刊是国家级非金属矿行业期刊,中国科技核心期刊,。本刊主要报道我国非金属矿工业产业政策,地质找矿,矿产开发与利用,采矿、选矿、加工新技术、新成果、新经验、环境保护与评价、管理科学、市场信息、行业动态等。反映行业技术发展趋势的专题综述;相关学科的新技术、新工艺、新材料、企业建设、科学管理的经验和成就。
《RareMetals》《RareMetals》被世界著名检索工具sCISearch,CA,EI,MA等收录,本刊是由中国有色金属学会主办的学术性刊物,以稀有金属材料研究、开发和冶炼为特色。《RareMetals》主要报道稀有金属和部分有色金属在材料研制、合金加工、选矿、冶炼、理化分析测试等方面的最新研究成果,同时报道超导材料、半导体材料、复合材料、陶瓷材料、贮氢材料、磁性材料和纳米材料的研制与性能。《无机材料学报》(月刊)创刊于1986年,由中国科学院上海硅酸盐研究所主办,被美国《ProQuest数据库》、瑞典《开放获取期刊指南》收录。科学出版社出版,郭景坤院士任主编,主要报道包括纳米无机材料、功能陶瓷(铁电、压电、热释电、PTC、温敏、热敏、气敏等)、高性能结构陶瓷、功能晶体材料、能源材料、生物材料、无机薄膜材料、特种玻璃、环境材料、特种无机涂层。材料以及无机复合材料等方面的最新研究成果,上述材料性能的最新检测方法以及获得_上述材料的新工艺等。AdvancesinAppliedCeramics期刊号1743-6753影响因子1.092是工程技术4区刊物,有平均2-3个月的审稿期,是比较容易投稿的陶瓷类期刊。CERAMICSINTERNATIONAL期刊号0272-8842影响因子s.057是工程技术2区刊物,平均审稿周期1。9个月,以往投稿人员反馈也是比较好投的刊物。
这个是先要问问单位是不是有什么要求,要是有的话,那么按要求去发就好了,要是没有的话,那么就是自己选择期刊去发就可以了
刚才回答了您一个问题。想弄清楚是职称用还是学术用。学术用的话可以发表在《中国矿业大学学报》、《山东科技大学学报》、《太原理工大学学报》(原来的老矿业学校的都可以),或者发表在《采矿与安全工程学报》、《金属与矿山》、《矿物学报》等专业期刊;如果光评职称用,可以发表在《工程建设》、《价值工程》等相关期刊上。
看您擅长的方向了
目前有很多矿业类的期刊,但都是核心,发表起来要求学术水平非常高,对于屏职称完全没有必要。我有个同学也是矿业工程的,在新汶矿业集团,我给他发表在《价值工程》上,他评审通过了,一点问题没有。如果确实是高水平文章,可以到中国知网找相关期刊。
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煤矿开采技术的进步和完善是采矿学发展的主题。下面我给大家分享煤矿开采技术论文,大家快来跟我一起欣赏吧。
浅议煤矿开采技术
[摘 要]我国煤炭资源储量丰富,据不完全统计,我国煤炭总储量在9000亿吨以上,含煤面积55万多平方千米,而且煤种齐全,我国一次性能量消费结构中,煤炭占75%以上。从煤中可以提取二百多种产品,因此煤炭工业发展的快慢,将直接关系到我国社会主义经济建设。煤矿开采技术的进步和完善是采矿学发展的主题。发展多层次、多样化的采煤工艺,具有重要的意义。
[关键词]煤矿 采煤工艺 控制技术 开采
中图分类号:X752 文献标识码:A 文章编号:1009-914X(2014)30-0130-01
1 简述矿井开采
矿井开拓通常以井筒的形式分为竖井开拓,斜井开拓,平硐开拓和综合开拓。采用合理的采矿方法是搞好矿井生产的关键。
竖井是一种从地面开掘以提供到达某一煤层或某几个煤层通道的垂直井。从一个煤层下掘到另一个煤层的竖井称盲井。在井下,开采出的煤倒入竖井旁侧位于煤层水平以下的煤仓中,再装入竖井箕斗从井下提升上来;斜井是用来开采非水平煤层或是从地面到达某一煤层或多煤层之间的一种倾斜巷道。斜井中装有用来运煤的带式输送机,人员和材料用轨道车辆运输;平硐是一种水平或接近水平的隧道,开掘于水平或倾斜煤层在地表露出处,常随着煤层开掘,它允许采用任何常规方法将煤从工作面连续运输到地面。
煤层在形成时,一般都是水平或者近水平的,在一定范围内是连续完整的。但是,伴随着地壳的运动,煤层的空间形态发生了变化,形成了单斜构造、褶皱构造和断裂构造等地质构造。采煤需要注意煤层的走向、倾向和倾角。
矿井开拓的主井和运输巷道等都需要长期支护,可以采用砌碹支护,架拱支护,架蓬支护,锚杆支护,锚喷支护,锚网喷支护,锚索支护,金属拱形支架支护,料石支护,钢筋混凝土支护或者几种支护形式并存形成联合支护。采掘工作面需要临时支护,通常采用的方式有打点柱、液压支柱支护、木支柱支护等。采煤一般都采用后退式采煤,边采边加强支护。
2 采煤方法
开发煤矿高效集约化生产技术手段,建设高产高效矿井。研究开发各种环境条件下的高效、可靠的采煤装备和工艺;简单、高效、可靠的生产系统和开采布局;生产过程监控与有效管理等相互适应的成套开采技术,以提高开采技术水平和机械化程度。
2.1 开发“埋深浅、硬顶板、硬煤层现代开采技术”
硬顶板控制技术。研究埋深浅、地压小的硬厚顶板控制技术,主要通过岩层定向水力压裂、倾斜深孔爆破等顶板处理技术,直接顶能随采随冒,提高顶煤回收利用率,基本顶能按照合理�距垮落,有利于顶煤破碎,保障工作面推进安全、顺利地进行。
硬厚顶煤控制技术,研究开发埋深浅、支撑压力小的硬厚顶煤的迅速处理技术,包含高压注水压裂技术和顶煤深孔预爆破处理技术,以提高顶煤回收利用率。顶煤冒放性差、块度大的综合开采成套设备技术,有利于顶煤破碎和顶板控制,同时有利于液压支架的放置,为布置输送机提供便利。
两硬条件下放顶煤开采快速推进技术,采用合理的综放开采回采工艺、优化工序、缩减放煤时间,提高工作面的推进度,实现高效高产。
宽煤巷锚杆支护技术,有利于综采配套设备的大功率和重型化,有助于连续采煤机的使用,从而有效提高工作面产能。
2.2 缓倾斜薄煤层的长壁开采
主要研究开发:体积小、功率大、高可靠性的薄煤层采煤机、刨煤机;研制适合刨煤机综采的液压支架;研究开发薄煤层工作面的总体配套技术和高效开采术。
2.3 缓倾斜厚煤层一次采全厚大采高长壁采
应进一步加强完善支架结构及强度,加强防倒、防滑、防止顶梁焊缝开裂和四连杆变、防止严重损坏千斤顶措施等的研究,提高可靠性,缩小其与中厚煤层(采高3m左右)产高效指标的差距。
2.4 各种综采高产高效综采设备保障体系
要实现高产高效,就要提高开机率,对“支架―围岩”系统、采掘运设备进行监控。进一步完善液压信息、支架位态、顶板状态、支护质量信息的自动采集系统;乳化液泵站及液压系统运行状态的检测诊断;采煤机在线与离线相结合的 “油-磨屑”监测和温度、电信号的监测;带式输送机、刮板输送机全面状态监控。
3 深矿井开采技术
深矿井开采的关键技术是:煤层开采的矿压控制、冲击地压防治、瓦斯和热害治理及深井通风、井巷布置等;主要任务:深井围岩状态和应力场及分布状态的特征;深井作业场所工作环境的变化;深井巷道快速掘进与支护技术与装备;深井冲击地压防治技术与监测监控技术;深矿井高产高效开采有关配套技术;深矿井开采热害治理技术与装备。
4 “三下”采煤技术
提高数值模拟计算和相似材料模拟等,深入研究开采上覆岩层运动和地表沉陷规律,研究满足地表、建筑物、地下水资源保护需要的合理开采系统和优化参数,发展沉降控制理论和关键技术;研究与应用各种充填技术和组合充填技术;研究近水体开采的开采设计、工艺参数优化和装备等关键技术。
5 优化巷道布置,降低矸石排放
改进、完善现有采煤方法和开采布置,以实现开采效益最大化为目标,研究开发煤矿地质条件开采巷道布置及工艺技术评价体系,从而实现开采方法、开采布置与煤层地质条件的最佳匹配。
6 采场围岩控制技术
6.1 进一步完善采场围岩控制理论
用科学合理、优化高效的岩层控制技术来确保开采的安全、高效、低成本为目标,要通过总结经验,深入研究各种煤层地质及开采条件来实现。
6.2 研究坚硬顶板与破碎顶板条件下应用高技术低成本岩层控制技术
目前,主要应用的是高压注水、深孔预裂爆破处理坚硬顶板和应用化学加固技术, 由于这些技术工艺复杂、成本高,所以需要进一步研究开发新技术、新工艺、新材料来解决这一问题。
6.3 放顶煤开采岩层和支架――围岩相互作用机理
研究放顶煤开采力学模型、围岩应力、顶煤破碎机理、支架――顶煤――直接顶――基本顶相互作用关系;运用离散元等方法研究顶煤放落规律,提出放顶煤优化准则和提高顶煤回收率的路径。
6.4 支护质量与顶板动态监测技术
在总结缓倾斜中厚长壁工作面开展支护质量与顶板动态监测方面,需要进一步在坚硬顶板、破碎顶板、急倾斜的放顶煤工作面开展支护质量与顶板动态监测,同时应不断完善现有的监测技术,发展智能化监测系统,改进监测仪表,使监测仪表向直观、轻便、小型化方向发展。
6.5 冲击地压的预测和防治
通过计算机模拟研究冲击性矿压显现发生的机理,进一步完善冲击性矿压显现监测系统,发展遥控测量和预报技术。
6.6 研究开发新型的支护设备
研究硬煤层、硬顶板放顶煤液压支架,完善液压支架性能和快速移架系统。
7 小煤矿技术改造和机械化开采技术
对小煤矿进行合并重组,淘汰落后生产技术和生产设备,提高平均单井规模和技术水平,开发小型煤矿机械化、半机械化开采技术和装备,改进小煤矿的采煤方法和开采工艺,提高采煤工作面的单产和工效。
总结,提高煤矿资源开采水平,充分利用资源,选择合理的采煤开拓方法,保障安全生产,提高企业效益。
参考文献
[1] 郭靖.煤矿开采技术[M].山西人民出版社.2010
[2] 戴绍诚.高产高效综合机械化采煤技术与装备[M].煤炭工业出版社 1998.
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