立磨工艺和功能说明

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

Contents目录

1.Plant description工厂说明..... . (4)

1.1Design 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)

1.2Control 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)

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)

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

Compressed air consumption: 压缩空气消耗约 500 Nm3/h at 7 bar

1.1Design 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 given 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 with 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 the 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 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 all iron parts. Thick material layers on the troughed belt conveyor, coarse grain size ranges or sticky and moist material can make removal of the iron more difficult. Non-magnetic tramp metal 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 field of high frequency between them which is generated by an oscillator in the controller. When a metal part passes the field, eddy currents form as a result of induction and take away energy from the oscillator. A signal is formed from this which is relayed to the control system of the change-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 is necessary not to detect tramp metal which is not greater than a minimum size. The small tramp metal passes in the raw mill and is collected for the most part in the collecting device for light section steel of the bucket elevator.

金属探测器包括转换器和在控制器中由振荡器产生高频的交变磁场的接收组件。当金属物通过磁场时会产生涡流，结果形成感应并从振荡器中带走能量。从这里产生一个信号并延时传给转向阀(项目号5D1.CF01.CFJ01)的控制系统。转向阀将夹杂金属物的物料排放至收集箱中。为避免频繁的除去，不需要探测小于最小尺寸的夹杂金属。小的夹杂金属通过磨机进入提升机，大部分细铁颗粒在提升机装置内的收集器被收集。The rotary airlock feeder, item 5F1.CV01.CVJ01 is used as airlock for the roller mill. To avoid caking of the slag the rotary airlock feeder is heated by a gas stream. The material is guided onto the grinding table via a chute which is also heated.

锁风转饲机(项目号5F1.CV01.CVJ01)为辊磨密封空气用。为避免矿渣结块旋转喂料机通有热气加热。物料导入磨盘经过的料槽也被加热。

1.1.2 Roller mill RMC 51/26 立式辊磨

The general design of the roller mill is explained with Figure 1.

立磨总图设计见图 1。

The essential component of the roller mill is the grinding table with two concave grinding tracks (on the inside and outside) and the two roller pair units (designation 3) which run on the bed of material. The grinding table is driven by the motor (2), the grinding rollers are fixed in their position. The raw material is fed to the mill via a chute and falls directly onto the centre of the grinding table. The material is then carried under the rollers by the rotation of the table. The ground material is flung outwards over the edge of the grinding table and en-trained in the stream of gas from the nozzle ring (9). All of the material ejected from the grinding table, or a certain proportion of it is carried in the gas stream to the separator (10). 辊式磨主要是由有2道凹形磨辊轨迹(内轨和外轨)的磨盘和运转在料床上的2组磨辊对(每组一对磨辊，标示3)组成。磨盘由马达(标示2)驱动，磨辊被固定在原位置。原料通过一个喂料槽直接落在磨盘的中心。然后料被转动的磨盘带动进入磨辊。被碾磨过的料向外甩出越过磨盘的边界进入从喷嘴环(标示9)来的气流中。被磨盘甩出的物料，全部或者一部分被气流带至选粉机(标示10)。

The grinding force of the rollers is hydraulically applied on the material via the tie rods (5). The confining air system (7) protects the grinding roller bearings from entering dust. The bed of material can be stabilised with the water injection system (11).

磨辊的碾磨压力来自液压系统，通过拉杆(标示5)加载在碾磨物料上。空气密封系统(标示7)保护磨辊轴承防止灰尘进入。喷水(标示11)可以稳定料床。

The separator (10) classifies the ground material into finished product and oversize. The oversize material falls back onto the centre of the grinding table (4), while the finished prod-uct is carried to the downstream filter by the stream of gas.

选粉机(标示10)将研磨过的料分离成成品和过粗料。粗粉料落回磨盘(标示4)中心，成品则被气流带入下一步的收尘机中。

The gas velocity in the nozzle ring (9) of the roller mill can be adapted to the grinding plant requirements by adjusting the nozzle segments. Material lumps which cannot be carried to the separator in the hot gas stream fall through the nozzle ring and are returned to the mill via the recirculating bucket elevator.

磨机内喷嘴环(标示9)处的气流速度可以通过调整喷嘴截面来满足粉磨系统要求。粗物料无法被热气带至选粉机而掉落入喷嘴环内，通过外循环提升机送回到磨中。

圖1：立磨总图設計

Housing (1)壳体

Drive Unit (2)驱动装置

Roller pair units (3)辊轮组

Grinding table (4)磨盘

Tie rods (5)拉杆

Hydraulic system (6)液压系统

Confining air system (7)空气密封系统

Dismounting device (8)拆解装置

Nozzle ring (9)喷嘴环

Seperator (10)选粉机

Water injection (11)喷水

1.1.

2.1 Mill housing 磨机外壳

Doors for inspection, maintenance, assembly and installation purposes are installed in the upper housing section of the roller mill. In sections particularly exposed to wear, the housing is provided with replaceable wear protection. The nozzle ring consists of Hard Faced Com-pound Steel Plate (VAUTID, EURODUR; or similar). Above the nozzle ring, DENSIT cas-settes(Ceramic Mortar) are installed at the lower end, and above them a scaled wear lining made of a special AR-plate (CREUSABRO 4000).

安装在磨机上部外壳上的门是为了检查、维护保养、组装及安装的目的。尤其在易受磨损的部位，磨机外壳提供了可更换的磨损保护件。喷嘴环是由表面硬化的复合耐磨钢板(VAUTID, EURODUR;或类似的)构成。在喷嘴环上面，较低部位安装的是DENSIT 盒(陶磁砂浆)，上面部位是由特别的AR板(CREUSABRO 4000)制成的片状耐磨衬板。

Hot gas is supplied to the roller mill housing via two hot gas pipe sockets. The seal between the casing and the grinding table is a sliding contact seal. Dust cannot deposit, as always small quantities of false air enter through this seal.

热风通过2个热风进口管接口进入磨机。在磨机外壳和磨盘间的密封是滑动接触式密封。因为密封间总是存在少量漏风，粉尘不能附着。

To control the hot gas supply in the mill interior, the nozzle ring is installed above the hot gas pipe socket. The nozzle ring consists of several adjusting segments for varying the gas ve-locity by altering the cross-sections. The hot gas stream emerges at high velocity, entrains the material from the grinding table and carries it upwards to the SEPOL separator. The gas velocity in the nozzle ring is a crucial parameter for the grinding process. The cross-section of the nozzle ring can be altered from outside.

为控制磨机内的热风量，喷嘴环位于热风管接口之上。喷嘴环由数个可调节阀块组成，通过改变喷嘴截面可以调整气流速度。热风以高速流入，夹带着从磨盘甩出的物料，并将其向上带入SEPOL选粉机。在粉磨工艺操作中喷嘴环的气体流速是极重要的参数。喷嘴环的截面可以从磨机外面调整。

進料

盒子

復合式耐磨鋼板

The material on the grinding table is carried under the rollers by the rotation of the table. The grinding is performed by a total of 4 grinding rollers set in pairs which can rotate independ-ently. The bearing assembly is sealed by the rotary shaft seal. With the roller carrier, confining air is carried to the rollers in order to prevent dust from entering the grinding roller bear-ings. The roller tyres consist of wear-resistant Ni HARD IV or similar and are fixed on the roller body with clamping rings and studs.

磨盘上的物料被转动的磨盘带入磨辊下。共有4个磨辊以对辊方式作用，对辊中每个磨辊轮可以独立旋转。轴承组由旋转轴封密封。在磨辊架，密封空气被带入目的是为了防止灰尘进入磨辊的轴承。辊轮的辊胎是由耐磨的Ni HARD IV或类似的材料组成，辊胎用紧固夹和双头螺栓固定在辊体上。

密封空氣接口

磨輥架

磨輥

The grinding roller guide and the single grinding-force application system allows the roller pair units freedom of movement in all three planes. They can, for instance, move vertically and pivot horizontally on their guide axle. If the inner roller is raised by coarse feed, the outer roller presses down with greater force on the material. Each roller thus supports the action of the other. This interactive functioning of the rollers results in highly efficient grind-ing.

磨辊导向轴和单辊压力平衡系统允许磨辊对可在3个自由度上移动。例如，它们能在垂直和水平方向围绕它的导向轴移动。如果内辊轮被加入的粗料顶起，则外辊轮会向下以更大的压力压料。每一对磨辊如此这般互相作用。这样的相互配合的功能实现了高效率的碾磨。

The grinding force required for grinding the material is generated by a hydraulic system. Each grinding roller is running in antifriction bearings on an axle clamped in the roller carrier. The roller pair units are so guided by pins in corresponding guides that they can move verti-cally and pivot horizontally on their horizontal axle. They can therefore very well adapt them-selves to changes in the material bed depth and the entire grinding surface always remains fully effective.

粉磨物料需要的粉磨压力是由液压系统产生的。每个辊轮装在耐磨滚动轴承上，轴承安装于紧固在磨辊桥架的辊轴上。磨辊对由导向销引导，使得它们可以在垂直和中心水平围绕着水平轴运动。它们由此可在改变料床的深度时很好的调整自己，并使得整个碾磨表面一直保持有效的碾磨。

The material falls directly onto the centre of the grinding table and is carried by the centrifu-gal force before the rollers.

入磨物料直接落在磨盘中心上，并且通过离心力被带至磨辊下面。

磨盘衬板

磨盘The grinding table is mounted direct onto the driving flange of the gear unit. It consists es-sentially of the following components:

磨盘直接被固定在减速机的转动法兰上。它包括以下最主要的组件：

_ the grinding table body磨盘本体

_ the segmented, replaceable grinding track耐磨的，可替换的磨轨（磨盘衬板）

_ the table liner fastenings磨盘衬板的固定连接装置

_ the dam rings with the dam ring extension 带挡料圈附件的挡料圈

_ the insulation which protects the grinding table from thermal overloading by the hot gases 保护过热风量对磨盘过热冲击的绝缘材料

The bed of material on the grinding table forms between the concave grinding track and the convex grinding rollers. An optimum bed of material is decisive for effective grinding. The bed of material is set by the height of the dam ring installed on the outer grinding table rim. 在凹形槽轨道和凸起的辊轮间的磨盘上形成料床。决定碾磨效率的一个很重要因素是选择合理的料床厚度。料床厚度由安装在磨盘边缘的挡料圈的高度设定。

加高的外部擋料圈

前部擋料圈

外軌內軌

As the grinding track depth (measured from the upper edge of the grinding track) increases

with increasing wear of the grinding track, the height of the material bed on the grinding track also changes. When material with great internal supporting properties is ground which tends to formation of a very stable material bed, a super proportional increase of the material layer may occur due to the thicker material bed, and this may result in an increase of the rolling resistance at the grinding rollers. This increases the specific energy consumption of the grinding process. It is therefore necessary to adapt the dam ring height to the increasing wear during the grinding process. A material bed which is too low or too deep also upsets the smooth running of the mill and may lead to vibrations during operation.

由于碾磨轨道的深度(从碾磨轨道的上缘量测) 随着碾磨轨道的增大磨损而增大，碾磨轨道的料厚也随着变化。当物料特性比较稳定时，碾磨时容易形成一个稳定的料床。随着料层的厚度增加也容易产生超特性的粘滞料层，这样粘滞料层会增加磨辊的碾磨阻力，也就增加了碾磨过程中的能量消耗。因此在磨损增加时有必要改变挡料圈的高度。料床太薄或太厚同样会扰乱磨机的平稳运行，并且在操作中可能导致振动。

When the raw material is very fine and dry, it may be necessary to form a stable bed of mate-rial by means of a second dam ring. This dam ring (dam ring extension) is installed before the first dam ring.

当原料很细好很干时，通过加装第2个挡料圈可能可以形成稳定的料床。这个挡料圈(挡料圈附件)安装在第1个挡料圈之前。

The dam ring height can be adapted by selecting rings of different heights (dam ring exten-sion). The sketch below shows three examples of different wear conditions.

挡料圈的高度通过选择不一样高度的环可以改变(挡料圈附件)。下面绘制表示的是3种不同的磨耗情况。

新的狀況

低磨損

相當大磨損

Below the grinding table the nozzle ring is installed which is the …narrowest location“ of the roller mill. The hot gas stream emerges at high velocity, entrains the material from the grinding table and carries it to the SEPOL separator.

喷嘴环安装在磨盘以下，此处是磨机的“狭窄位置”。热气流产生高速度，从磨盘上把物料带走至SEPOL选粉机。

The gas velocity in the nozzle ring is a crucial parameter for the grinding process. The velocity in the nozzle ring is so selected that only very coarse components (e.g. not commin-uted iron parts) can fall through the nozzle ring. The ground material, however, must be conveyed to the separator or returned on the grinding table.

在碾磨工艺操作中喷嘴环的气体流速是极重要的参数。喷嘴环的风速选择使得只有非常粗的物料(比如未经破碎的铁颗粒)能通过喷嘴环掉落。被碾磨过的物料要么被送到选粉机或是重新回到磨盘。

The free cross-sectional area of the nozzle ring can be adjusted from outside without having to interrupt the production.

喷嘴环的自由截面区域可以在不打断生产的情况下从外面被调整。

The area around the nozzle ring is protected against abrasion by the mounting of wear re-sistant materials such as Creusabro and Vautid (see Figure 7).

喷嘴环周围区域为保护磨损安装固定了如Creusabro 和 Vautid材料的耐磨板(见图7)

1.1.

2.4 External circulation of material 料的外部循环

Material which falls through the nozzle ring is guided via a chute and tipping valve to the re-circulating bucket elevator, item 5F1.BE01. The change-over flap, item

5F1.CF01.CFJ01 is designed for emptying the mill for maintenance purpose only.

通过喷嘴环掉落的料通过一个袖斗和翻板阀到再循环提运机，项目号5F1.BE01。转向阀，项目号5F1.CF01.CFJ01的目的只是被设计用来为维护保养而清空磨机用的。

When the tailings are returned from the bucket elevator to the roller mill, the material passes a vibrating trough, item 5F1.VC01.VCJ01 with a downstream removal system for light sec-tion steel with a permanent magnetic drum, item 5F1.MG01.MGJ01.

当粗料从提运机送回到磨机时，过一个槽形振动给料机（项目号5F1.VC01.VCJ01），然后进入1个带永磁滚筒的磁鼓除铁器（项目号5F1.MG01.MGJ01）清除循环物料中的小颗粒铁。

An effectively functioning iron removal system is very important for the production, as otherwise, the circulating iron in the slag would accumulate and cause extreme wea r. The vibrating trough makes the flow of material from the bucket elevator uniform and ensures material feeding to the magnetic drum over the total width.

对生产而言一个有效的除铁系统是相当重要的，否则在矿渣中循环的铁会累积并导致对耐磨件严厉的磨损。振动机使从提升机的料流均匀并且确保料通过永磁滚筒的整个宽度。

With the hand flap in the dedusting pipe of the removal system the air volume is adjusted in such a way that the collected light section steel contains as few slag as possible. A double flap valve ensures air exclusion to the iron collecting container.

除铁系统的收尘管手动蝶阀的作用是可调整收尘管内的风量，从而使收集到的小铁颗粒中尽可能少含矿渣粉。双板阀的作用是隔离铁收集桶内的漏风。

振動篩

永磁鐵

滾筒

1.1.

2.5 Drive unit 传动装置

The drive unit of the RMC roller mill consists of the following main components (the number-ing relates to Figure 9):

RMC辊式磨的传动装置包含以下主要的部件(相关号码如图9所示)

_ (1) main gear unit主减速机

_ (2) coupling联轴器

_ (3) main motor主马达

_ (4) overrunning coupling超速联轴器(液压联轴器)

_ (5) auxiliary gear unit寸动减速机

_ (6) auxiliary motor寸动马达

_ (7) coupling guard联轴器护罩

_ (8) oil supply system供油系统

_ (9) vibration monitor振动探测仪

The torque required for grinding the material is generated by the main motor and transmitted by the main gear unit to the grinding table. The grinding table is mounted direct onto the hori-zontal driving flange of the gear unit.

碾磨物料所需要的扭力由主马达产生，由主减速机传递至磨盘。磨盘直接安装固定在主减速机的水平转动法兰上。

The occurring vertical forces are applied to the foundation via the grinding table and the gear unit. The main motor has a second shaft end to which the auxiliary gear unit with the auxiliary motor is coupled. A pneumatically operated overrunning clutch for engaging and disen-gaging of the auxiliary drive is installed between the main motor and the auxiliary drive unit.

磨辊产生的垂直压力通过磨盘及主减速机传递至基础。主马达轴的另一端连接辅传减速机和辅传马达。在主马达和辅传驱动装置之间安装有1个气动式超速离合器，此装置是为了嚙合和脱开辅传驱动。

The auxiliary drive unit, item 5F1.RM01.AXD01 is not only required for maintenance and inspection purposes and for loading material onto the grinding table during the first start-up, but also before every start of the mill, in order to smoothen the material bed, to avoid dan-gerous vibration.

辅传驱动装置，项目号5F1.RM01.AXD01，不只是为了维护保养和检查的目的，也用在初次起动使用来导料至磨盘上，同时也是在磨机每次起动前，为了平顺料床，以避免危险的振动。

A vibration monitor is installed at the housing of the main drive unit in order to check smooth running of the roller mill. When the vibration velocity at the drive unit is exceeded, alarm is activated or the grinding plant is stopped.

振动探测仪安装在主减速机的外壳上，用来检查磨机的平稳运转。当振动值超限时，警报作用，或者磨机停机。

1.1.

2.6 Water injection (item 5F1.RM01.WTJ01) 喷水装置 (项目号5F1.RM01.WTJ01) The flow properties and the formation of the material bed on the grinding table can be con-siderably improved by a determined quantity of water injected into the mill. The water con-tributes to formation of the material bed particularly when the material is dry and fine.

磨盘料床可以通过喷入合理的水量大大改善其流动特性和料床成形性。当料又干又细时，水对料床成形性有特别的影响。

The water displaces the air from the material. The flow properties of the material thus dete-riorate and a stable bed of material forms.

水可以置换出物料中的空气。这样就降低了物料流动性，可以形成稳定的料床。

Take care that the injected water does not come into direct contact with the hot grinding ele-ments(roller tyres and grinding track) but is always injected onto the material upstream of

the rollers on the draw-in side. It is also possible to add water on the grinding table centre. This is an advantage particularly with great tailings quantities.

注意喷水不要直接喷到高温的耐磨件(辊胎及磨盘衬板)上，而是要喷到辊轮吸入料端的料上。也可以加水到磨盘中心，这对粗粉回料量较多时特别有利。

The water quantity to be injected depends upon the mill size and the material properties such as feed moisture content, tailings quantity and feed material fineness and has to be specified during commissioning.

喷水量要依照磨机大小和物料特性而定。比如，喂入料的含水量、粗粉回料量和喂料细度等。这需在调试中摸索和确定。

1.1.

2.7 Confining air system (item 项目号5F1.RM01.CAS01 and 5F1.RM01.CAS02)

空气密封系统

The confining air prevents ingress of dust into the grinding roller bearings. The confining air flow is generated by the separate fans, items 5F1.RM01.CAS01 and 5F1.RM01.CAS02 which are equipped with suction filters to ensure dust-free air. The pressure monitor of the confining air 5F1.RM01.CAS01-B7001/B7002 and 5F1.RM01.CAS02-B7001/B7002 must be electrically interlocked with the mill motor.

空气密封防止粉尘进入辊轮轴承。空气密封流由离心风机产生，项目号

5F1.RM01.CAS01和 5F1.RM01.CAS02，其安装有过滤器以确保进入无尘空气。空气密封的压力监测器5F1.RM01.CAS01-B7001/B7002 和 5F1.RM01.CAS02-B7001/B7002必须与磨机马达有电气联锁。

Usually, the confining air pressure is between 20 and 40 mbar. It very much depends on the tolerance at the annular gap of the grinding rollers and the negative pressure inside the mill. 通常，空气密封的压力在20~40mbar之间。它非常取决磨辊辊轮环形间隙间的公差和磨机内的负压。

Shut down the confining air fans after the first start-up only in exceptional cases (e.g. during longer stops of the mill when all dampers and doors remain closed) in order to reliably exclude ingress of dust into the grinding roller bearings.

在初次起动后除非是极特别的事情才能停止空气密封风机(比如当所有的挡板和门保持全关时的长时间停机)，这是为了安全可靠的排除粉尘不进入磨辊的轴承。

1.1 Confining air fan空气密封风机

1.3 Confining air pipe (external) 空气密封管(外部的)

1.4 Confining air pipe (internal) 空气密封管(内部的)

1.5 Pivoting bearing支点旋转轴承

1.1.3 Dynamic separator 动态选粉机SEPOL RMS (Item 5F1.RM01.SDR01) The gas stream leaving the roller mill through the nozzle ring seizes the ground material and carries it in part or completely to the separator located above the grinding compartment. The separator concerned is a SEPOL separator type RMS.

气流通过磨机内的喷嘴环时，带走已碾磨过的粉料，部分或全部带向选粉机，选粉机位于磨机上部。选粉机被认为是RMS型号的SEPOL选粉机。

1.1 Discharge bend下料弯头

1.2 Separator cover选粉机盖

1.4 Lower housing section下部外壳节

1.6 Tailings cone分出粗粉的圆锥体

1.7 Adjusting device for guide vanes导风叶片的调整装置

1.8 Scale for adjusting device调整装置刻度

1.10 Support支撑

1.11 Inspection flap检查门板

1.12 Flooring grate底层筛板

4.1 Wear protection耐磨保护

4.2 Lining of separator cover选粉机盖的衬板

4.3 Lining of housing壳体衬板

4.5 Wear protection of分出粗粉的圆锥体的耐磨保护

tailings cone

4.6 Lining of feed chute进料袖斗衬板

The ground material carried away by the air stream is fed into the separator by the adjustable guide vane ring. The rotor separates the finished product from the material still being too coarse, i.e. the tailings, which are returned to the mill and centrally fed via the tailings return cone. The finished product is discharged in the gas stream and separated in the filter which is located downstream.

粉磨物料由热风携带，通过可调整的导风叶片环进入选粉机。转子将成品从仍然比较粗的物料中分离，粗料从中心通过粗粉回料锥体回到磨机。成品随气流并在下一级收尘器内分离收集。

The fineness of the product can be varied in operation by changing the rotor speed and gas volume. Drive of the SEPOL separator is by an electric motor and bevel/spur gear unit.

成品的细度可以在操作过程中调节转子速度和气体流量调整。SEPOL选粉机的驱动系统是由电机和伞形齿/正齿轮减速机组成。

When increasing the rotor speed, a finer finished product is achieved. This effect can be ad-additionally reached or even intensified by adjusting the static separator guide vanes in tangential direction. On the other hand, a coarser quality is produced when reducing the separator

speed or adjusting the static guide vanes in radial direction.