立磨工艺和功能说明Word文档格式.docx

1、1.2 Control concept 控制方案 .211.2.1 Control of gearbox lubrication （5F1.RM01.GLS01） 减速机润滑的控制.231.2.2 Control of auxiliaries 辅助设备的控制. . .241.2.3 Control of finished product conveyance 成品输送的控制. . . .251.2.4 Control of gas routes （5F1.GP01 to 5F1.GP05）气体路线的控制. . .251.2.5 Control of the hot gas producer （

2、5F1.HG01）热风炉的控制. .251.2.6 Control of main drive unit of mill （5F1.RM01.DRU01） and of new material delivery磨机主传动装置和原料供给的控制 . . . .261.2.7 Control of water injection （5F1.RM01.WTJ01） 喷水的控制 .261.2.8 Control of grinding pressure 碾磨压力的控制.262. Material properties 物料特性. . 273.Operation of the grinding plan

3、t 碾磨厂的操作. 293.1 Philosophy of operation 操作原理.293.2 Start-up / Shutdown sequence 启动 /停机顺序 .313.2.1 Start-up sequence 启动顺序. .313.2.2 Shutdown sequence 停机顺序.323.3 Control loops 控制回路环. .333.3.1 Control of differential pressure of mill 磨机压差的控制. . .343.3.2 Control of temperature downstream of mill 磨机后温度的控

4、制. .343.3.3 Control of pressure upstream of mill 磨机前压力的控制. . .353.4 Operation under extraordinary conditions 特殊情况下的操作.353.4.1 Start-up of plant 系统设备启动. .353.4.2 Shutdown of plant 系统设备的停止. .363.4.3 Operation with insufficient material quantity 喂料不足的操作. . .363.4.4 Overfilling of mill磨机过量喂料. .363.5.5 S

5、ignificant decrease of mill exit gas temperature 磨机出口风温度明显降低.37List of figures插图清单Figure 1: Design of the roller mill图 1: 辊式立磨的设计.8Figure 2: Wear protection of the feed chute图 2: 进料料槽的耐磨保护. .9Figure 3: Grinding roller carrier with roller pair unit图 3: 磨辊桥架和磨辊对装置.10Figure 4: Grinding table图 4: 碾磨磨盘 .

6、 .11Figure 5: Arrangement of the dam rings图 5: 挡料圈的设置.12Figure 6: Dam ring heightener图 6: 挡料圈增高.13Figure 7: Materials at the nozzle ring图 7:喷嘴环处的物料.14Figure 8: Collector for light section steel图 8:小铁颗粒收集.15Figure 9: Mill drive system with lubrication system图 9: 带润滑系统的磨机传动系统.16Figure 10: Confining ai

7、r system for grinding roller bearings图 10:磨辊轴承的密封空气系统.17Figure 11: Structure of the SEPOL separator图 11: SEPOL选粉机的结构.18Figure 12: Basic setting of guide vanes图 12: 导向叶片的基本设定.19Figure 13: Control scheme图 13: 控制方案. .331. Plant description 工厂说明Below, please find a process and function description of a

8、typical slag grinding plant. Thedesignations （item numbers） used in the text refer to the flowsheets.以下是一个典型的矿渣粉磨系统的工艺和功能说明。文中用到的代码（项目号）参考流程图中的设备编号。The slag grinding plant basically consists of the raw slag feeding system, the roller mill with the dynamic separator and external material circuit with

9、 the fine metal extraction unit, a hot gas generator, the gas routes including the system fan, the bag filter and finished material transport. 矿渣粉磨系统由：矿渣喂入装置、动态选粉机、带除细铁颗粒装置外物料循环、磨机本体、一台热风炉、包括风机的热风管路、袋收尘器和和产品输送装置。The roller mill is a POLYSIUS mill type RMS with a dynamic separator type SEPOL RMS. The

10、 grinding plant is heated by a hot gas generator, which normally is fired with blast furnace gas, natural gas, heavy oil, light oil or coal dust.立磨型号为RMS的伯利休斯磨配有型号为SEPOL RMS的动态选粉机。粉磨系统由一台热风炉供热风，热风炉一般采用高炉煤气、天燃气、重油、轻油或用煤粉。The following basis values apply to a typical 90 t/h slag grinding plant only:下列

11、基本参数仅适用于一个典型的 90 t/ h矿渣粉磨系统：Mill feed material磨机喂料: blast furnace slag 高炉矿渣Mill type磨机型号: RMC 51/26/435 Throughput产量: 90 tph （吨/每小时）Product fineness产品细度: 4200 cm2/g 4500 cm2/gDiameter of mill housing磨壳直径: 7000 mmDiameter of grinding table磨盘直径: 5260 mmDiameter of grinding rollers磨辊直径: 2600 mmWidth of

12、 the grinding rollers磨辊宽度: 730 mmQuantity of the grinding rollers磨辊数量: 4Inst. power of main drive unit安装的主马达功率: 2800 kWSeparator type选粉机型号: SEPOL 435 RMSDiameter of separator rotor选粉机转子直径: 4350 mmDiameter of separator housing选粉机壳体直径: 8500 mm Inst. drive unit安装的马达功率: 250 kWRotor speed转子速度: 26 - 154 1

13、/min Hot gas producer热风炉: .Max. heating capacity最大的加热容量: 45 55 GJ/hMax. hot gas quantity最大的热气量: . m3/hFuels燃料: natural gas or blast furnace gas: 高炉煤气, 天燃气, 重油, 轻油或煤粉Filter area收尘面积: 约 5000 mDust load粉尘浓度: 300 350 g/mExhaust air volume 排气量: 28,000 31,000 m3/hFilter medium 过滤介质: Polyacrylonitrile聚丙烯月青

14、Air to cloth ratio:空气对滤布比例 1.2 m/（m*min）Pressure drop: 压降 15 mbarCompressed air consumption: 压缩空气消耗 约 500 Nm/h at 7 bar1.1 Design and function of the slag grinding plant矿渣研磨厂的设计和功能Details of the design and functioning of the individual machines or plant components of the slag grinding plant are give

15、n below.以下是矿渣粉磨系统内各单个设备或部件的设计和功能。1.1.1 Raw material feeding 原料进料The raw material which consists of slag and gypsum is conveyed via the speed-controlled weighbelts, item no. 5D1.WE01, 5D1.WE02 and 5D1.WE03 and is guided in a controlled flow rate in the troughed belt conveyor 5D1.BC01 in accordance wi

16、th the set mix-ture.原料包括矿渣和石膏，经过调速皮带称（项目号5D1.WE01，5D1.WE02）流量控制，按照设定的混合比用槽形皮带机（5D1.BC01）输送。To protect the roller mill from metallic foreign bodies a suspended magnetic separator, item 5D1.MS01.MSJ01 and a metal detector, item 5D1.MT01.MTJ01 are installed above the common conveyor belt 5D1.BC02 of th

17、e raw material components. The suspended mag-netic separator basically consists of a permanent magnet, which is enclosed by a belt con-veyor provided with transverse galleries. During operation the iron parts attracted by the magnet are brought with this belt conveyor out of the area of the magnetic

18、 field and are dis-charged in a collecting container.为保护辊磨，清除金属异物，原料输送皮带机（5D1.BC02）上装有悬挂式电磁除铁器和金属探测器（项目号5D1.MS01.MSJ01和5D1.MT01.MTJ01）。悬挂式电磁除铁器主要包括一个永磁铁，配有一条横向的回转皮带。在操作中铁块物被磁铁吸起，当回转皮带超出磁力范围后铁块物掉落至收集箱内。We know from experience that the suspended magnetic separator alone does not remove alliron parts.

19、Thick material layers on the troughed belt conveyor, coarse grain size ranges orsticky and moist material can make removal of the iron more difficult. Non-magnetic trampmetal also is no collected. Therefore, an additional metal detector （item 5D1.MT01.MTJ01）also is installed.根据经验，我们知道仅仅使用悬挂式电磁除铁器是不能

20、除去所有铁颗粒的。皮带机上较厚的料层，较粗的进料粒径以及粘稠潮湿的物料都使除铁变得更加困难。另外，也无法除去无磁性的夹杂金属物，因此，需增加安装金属探测器。The metal detector contains transmitting and receiving coils with an alternating magnetic fieldof high frequency between them which is generated by an oscillator in the controller. When ametal part passes the field, eddy c

21、urrents form as a result of induction and take away energyfrom the oscillator. A signal is formed from this which is relayed to the control system of thechange-over flap, item 5D1.CF01.CFJ01. The change-over flap removes the metal con-taining new feed material and discharges it in a container. To avoid frequent removals, it isnecessary not to detect tramp metal which is not greate