Process and Function Description
工艺和功能说明
of a Typical Slag Grinding Plant
with POLYSIUS Vertical Roller Mill Type RMS
伯利休斯典型的RMS矿渣立磨系统
(Issue Aug. 2004) 2004年8月发行
2004年10月26日
伯利休斯水泥 第 1 頁，共 37 頁
Contents目录
1. Plant description工厂说明..... ............................................................................... 4
Design and function of the slag grinding plant矿渣研磨厂的设计和功能... ................ 6
1.1.1 Raw material feeding原料进料......................................................................................................6 1.1.2 Roller mill RMS 51/26 辊式磨. ....................................................................................................7 Figure 1: Design of the roller mill 图1: 立式辊磨的设计…………………………………………..错误！未定义书签。
1.1.2.1 Mill housing 磨机外壳 .................................................................................. 错误！未定义书签。 1.1.2.2 Feed chute 围料槽 .......................................................................................... 错误！未定义书签。 1.1.2.4 Grinding table 磨盘 ........................................................................................ 错误！未定义书签。 1.1.2.5 Wear of grinding elements and dam ring heightener 耐磨件的磨损和挡料圈高度 错误！未定义书签。
1.1.2.6 External circulation of material 外循环物料 ............................................. 错误！未定义书签。 1.1.2.7 Drive unit 驱动装置 ....................................................................................... 错误！未定义书签。 1.1.2.8 Water injection (item 5F1.RM01.WTJ01) 喷水装置 ............................... 错误！未定义书签。 1.1.2.9 Confining air system (item 5F1.RM01.CAS01 and 5F1.RM01.CAS02) 密封风机系统 ...... 错误！未定义书签。
1.1.3 Dynamic separator SEPOL RMS (Item项目5F1.RM01.SDR01) 动态选粉机........................18 1.1.4 Gas routes风管路径 ..................................................................................... ...............................20 1.1.5 Finished product route 产品路 径 ..........................................................................................20
Control concept 控制方案 .............................................................................................21
1.2.1 Control of gearbox lubrication (5F1.RM01.GLS01) 减速机润滑的控制................................23 1.2.2 Control of auxiliaries 辅助设备的控制........................................................... ... .......................24 1.2.3 Control of finished product conveyance 成品输送的控制............ ......... ... .............................25 1.2.4 Control of gas routes (5F1.GP01 to 5F1.GP05)气体路线的控制..... ........ ...............................25 1.2.5 Control of the hot gas producer (5F1.HG01)热风炉的控制............................................ ........25 1.2.6 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 ............ .......................................................... ....... .......26 1.2.7 Control of water injection (5F1.RM01.WTJ01) 喷水的控制 ..................................................26 1.2.8 Control of grinding pressure 碾磨压力的控制..........................................................................26
2. Material properties 物料特性.... ........................................................................ 27
3.Operation of the grinding plant 碾磨厂的操作..................................................... 29
3.1 Philosophy of operation 操作原理...................................................................................29 3.2 Start-up / Shutdown sequence 启动 /停机顺序 ...........................................................31
3.2.1 Start-up sequence 启动顺序..... ..................................................................................................31 3.2.2 Shutdown sequence 停机顺序......................................................................................................32
3.3 Control loops 控制回路环......... ......................................................................................33
3.3.1 Control of differential pressure of mill 磨机压差的控制................................. ...... ................34 3.3.2 Control of temperature downstream of mill 磨机后温度的控制.............................. ............34
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3.3.3 Control of pressure upstream of mill 磨机前压力的控制.. ................. ....................................35
3.4 Operation under extraordinary conditions 特殊情况下的操作..................................35
3.4.1 Start-up of plant 系统设备启动..... ............................................................................................35 3.4.2 Shutdown of plant 系统设备的停止... ........................................................................................36 3.4.3 Operation with insufficient material quantity 喂料不足的操作............... ........... .................36 3.4.4 Overfilling of mill磨机过量喂料........... .....................................................................................36 3.5.5 Significant decrease of mill exit gas temperature 磨机出口风温度明显降低……….............37
List of figures插图清单
Figure 1: Design of the roller mill图 1: 辊式立磨的设计.......................................................................8 Figure 2: Wear protection of the feed chute图 2: 进料料槽的耐磨保护. ...............................................9 Figure 3: Grinding roller carrier with roller pair unit图 3: 磨辊桥架和磨辊对装置..........................10 Figure 4: Grinding table图 4: 碾磨磨盘 ............................................................ ..................................11 Figure 5: Arrangement of the dam rings图 5: 挡料圈的设置................................................................12 Figure 6: Dam ring heightener图 6: 挡料圈增高...................................................................................13 Figure 7: Materials at the nozzle ring图 7:喷嘴环处的物料.................................................................14 Figure 8: Collector for light section steel图 8:小铁颗粒收集...............................................................15 Figure 9: Mill drive system with lubrication system图 9: 带润滑系统的磨机传动系统......................16 Figure 10: Confining air system for grinding roller bearings图 10:磨辊轴承的密封空气系统……...17 Figure 11: Structure of the SEPOL separator图 11: SEPOL选粉机的结构..........................................18 Figure 12: Basic setting of guide vanes图 12: 导向叶片的基本设定...................................................19 Figure 13: Control scheme图 13: 控制方案..... .....................................................................................33
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1. Plant description 工厂说明
Below, please find a process and function description of a typical slag grinding plant. The designations (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 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 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/g Diameter of mill housing磨壳直径: 7000 mm Diameter of grinding table磨盘直径: 5260 mm Diameter of grinding rollers磨辊直径: 2600 mm Width of the grinding rollers磨辊宽度: 730 mm Quantity of the grinding rollers磨辊数量: 4
Inst. power of main drive unit安装的主马达功率: 2800 kW
Separator type选粉机型号: SEPOL 435 RMS Diameter of separator rotor选粉机转子直径: 4350 mm Diameter of separator housing选粉机壳体直径: 8500 mm Inst. drive unit安装的马达功率: 250 kW
Rotor speed转子速度: 26 - 154 1/min Hot gas producer热风炉: ............. Max. heating capacity最大的加热容量: 45 ~ 55 GJ/h Max. hot gas quantity最大的热气量: ...... m3/h
Fuels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 m2 Dust load粉尘浓度: 300 ~ 350 g/m
Exhaust air volume 排气量: 28,000 ~ 31,000 m3/h Filter medium 过滤介质: Polyacrylonitrile聚丙烯月青 Air to cloth ratio:空气对滤布比例 < 1.2 m3/(m2*min) Pressure drop: 压降 < 15 mbar
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Compressed air consumption: 压缩空气消耗 约 500 Nm3/h at 7 bar
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