Unit 3 The blast furnace plant講述

1、SMM, NEU2021-7-3021comprise包括，由包括，由組成組成2bunker料倉料倉3hopper漏斗，料斗漏斗，料斗4cast house出鐵場出鐵場5hot stove (cowper)熱風(fēng)爐熱風(fēng)爐6slim細(xì)長的細(xì)長的7tulip喇叭形喇叭形8silhouette輪廓輪廓9truncated截短了的截短了的10cylinder圓筒，圓柱體圓筒，圓柱體11cone錐體錐體12piling打樁，打樁工程打樁，打樁工程13throat(爐爐)喉喉14belly爐腰爐腰15bosh爐腹?fàn)t腹16composite復(fù)合的，合成的復(fù)合的，合成的17plug爐底徹塊，塞子爐底徹塊，塞子1

2、8slag volume渣量渣量SMM, NEU2021-7-30319practice實(shí)際操作實(shí)際操作20blow-in開爐開爐21be referred to as叫作，稱為叫作，稱為22notch出口，槽口出口，槽口23iron notch鐵口鐵口24slag notch渣口渣口25emergency緊急情況，突然事件緊急情況，突然事件26critical關(guān)鍵性的，緊要的關(guān)鍵性的，緊要的27parameter參數(shù)參數(shù)28stack爐身，堆，一堆爐身，堆，一堆29ceramic陶瓷的陶瓷的30cylindrical圓柱圓柱(形，體形，體)的的31stockline料線料線32offtake

3、煤氣導(dǎo)出管，排氣管煤氣導(dǎo)出管，排氣管33density密度密度34copper銅銅35stave板，冷卻壁板，冷卻壁36content里面的東西里面的東西SMM, NEU2021-7-30437evenly均勻的均勻的38dump傾卸，傾倒傾卸，傾倒39double bell雙料鐘雙料鐘40arrangement裝置，配置裝置，配置41cooling plate冷卻板冷卻板42external外部的，外面的外部的，外面的43undertake進(jìn)行，從事進(jìn)行，從事44belt皮帶皮帶45skip料車料車46distribute分配，分布分配，分布47bell-less無料鐘的無料鐘的48seal

4、密封密封49rotating chute旋轉(zhuǎn)溜槽旋轉(zhuǎn)溜槽50liquid液體液體(n)；液體的，液態(tài)的；液體的，液態(tài)的(adj)51float飄浮，漂浮飄浮，漂浮52skimmer撇渣器撇渣器53pool池池54dam堤，壩堤，壩SMM, NEU2021-7-30555separate分開，隔離分開，隔離56runner流槽流槽57iron runner鐵溝鐵溝58trench溝槽，溝道溝槽，溝道59facility設(shè)施，設(shè)備設(shè)施，設(shè)備60pit池，深坑池，深坑61slag pit渣池渣池62be adjacent to接近接近63steel plant鋼廠鋼廠64water spray噴水噴

5、水65slag ladle渣罐渣罐66transport傳送，運(yùn)輸傳送，運(yùn)輸67remote遙遠(yuǎn)的，邊遠(yuǎn)的遙遠(yuǎn)的，邊遠(yuǎn)的68taphole出出(鐵，鋼，渣鐵，鋼，渣)口口69taphole drill開開(鐵鐵)口機(jī)口機(jī)70mudgun泥炮泥炮71blower house鼓風(fēng)機(jī)室鼓風(fēng)機(jī)室72blend混合混合SMM, NEU2021-7-30673hot blast main熱風(fēng)管熱風(fēng)管74mixer line混風(fēng)管混風(fēng)管75ring main bustle熱風(fēng)圍管熱風(fēng)圍管76encircle環(huán)繞，圍繞，包圍環(huán)繞，圍繞，包圍77deliver輸送輸送78exit排出，離去排出，離去79duct

6、管，導(dǎo)管管，導(dǎo)管80tuyere風(fēng)口，風(fēng)嘴風(fēng)口，風(fēng)嘴81uptake上升管上升管82downcomer下降管下降管83bleeder分壓器，放散閥分壓器，放散閥84pressure relief valve減壓閥，溢流閥減壓閥，溢流閥85scrub使使(空氣空氣)凈化，擦洗凈化，擦洗86particulate微粒的微粒的87trough溝，槽溝，槽88concrete混凝土混凝土89hoist升起，提起升起，提起90chute斜槽，滑道斜槽，滑道SMM, NEU2021-7-307 A complete blast furnace plant (see the figure below) co

7、nsequently comprises many components. The most important of these are: the blast furnace, bunkers, charging equipment, the cast house, hot blast stoves, top gas removal and cleaning equipment.1 stockhouse; 2 scale car/skip system; 3 system of “bells” or a chute bell-less top; 4 offtakes; 5 uptakes;

8、6 downcomer; 7 bleeders; 8 dust catcher; 9 gas cleaning system; 10 the water gas “stove stack”; 11 hot blast main; 12 mixer line; 13 ring main bustle pipe; 14 tuyeres; 15 cast house; 16 trough; 17 iron runner; 18 slag runner.SMM, NEU2021-7-308 The blast furnace is a continuously working shaft furnac

9、e. In its original form, it was slim and tulip shaped. Today, its silhouette consists of truncated cylinders and cones. Blast furnace is a large refractory-lined steel vessel and the entire furnace requires cooling. The following is an introduction to the parts and functions of a modern blast furnac

10、e. The furnace is built on a foundation of pilings and concrete to support the furnace and burden. The inside profile of the blast furnace is termed (from top to bottom) furnace throat, shaft, belly, bosh, and hearth (see the figure in the next slide).SMM, NEU2021-7-309The lower portion of the furna

11、ce is called the hearth. The hearth comprises carbon side wall and a central composite plug. One or more iron notches are located above the hearth, and the molten iron and slag are removed through them. Above the iron notch is the slag notch. With modern low slag volume practice, the slag notch is t

12、ypically for blowing-in or emergency use only. The portion above the hearth is the bosh, and the bosh angle is a critical parameter in the design of the furnace. The belly of the widest point can be cooled by a variety of methods. The bosh and stack usually have ceramic lining. The throat is cylindr

13、ical and is referred to as the stockline section. The top of the furnace directs the gas to the offtakes.SMM, NEU2021-7-3010 The modern blast furnace has much cooling equipment, such as, high density copper cooling plates, cast-iron stave coolers, and external shower cooling, etc. Using water-coolin

14、g process at higher smelting temperature aids in maintaining the furnace shape and structure. The design of the cooling system and refractory should be undertaken together. Raw material from the sinter and coke plants are fed to a system of bunkers, where sinter, pellets and coke are screened and we

15、ighted before being charged via a belt system or the skip car. The method of feeding the charge into the furnace is somewhat complicated, the object being to avoid wasting any of the blast furnace gas and to distribute the contents of the furnace evenly. The charge is hoisted to the top of the furna

16、ce and dumped on to a double bell and the hopper arrangement. The small bell then opens, admitting the charge onto the large bell. The small bell then closes; preventing gas from escaping when the large bell opens into the blast furnace. A recent development is the bell-less top in which the charge

17、is distributed from sealed bunkers at the furnace top by means of a rotating chute.SMM, NEU2021-7-3011 Liquid slag will float on the iron and is separated from the iron by the “skimmer” after tapping. Molten iron flows under the skimmer into an iron pool and then over the “iron dam” to the iron runn

18、er. The slag held upstream of the skimmer flows over a slag dam to the slag runner. The iron and slag runner systems are also refractory-lined trenches. The molten iron is delivered to a series of refractory-lined hot metal cars for transportation to the steel plant. The molten slag usually goes dir

19、ectly to slag pits adjacent to the casthouse, where it is cooled with water sprays. Some facilities lacking the space for local pits use slag ladles to transport the slag to remote pits. There are two critical pieces of equipment in the casthouse: the taphole drill and the mudgun. The taphole drill

20、is used to open the taphole. The mudgun is used to plug the taphole at the end of cast.SMM, NEU2021-7-3012 Clean cold blast air is supplied from a blower house to the hot blast stoves. Each blast furnace has three or four hot blast stoves. The air is heated as it passes through the stoves to the “ho

21、t blast main”. A “mixer line” delivers a portion of the cold blast air to blend with the hot blast air to maintain a constant hot blast temperature to the furnace throughout each stove cycle. The hot blast main connects with a “ring main bustle pipe” which encircles the furnace. From the bustle pipe

22、, the hot blast is delivered to the furnace through a series of evenly spaced nozzles called “tuyeres”.SMM, NEU2021-7-3013 The gas produced by the ironmaking process exits from the top of the furnace and is delivered to the gas cleaning system via a series of refractory-lined ducts referred to as “o

23、fftakes”, “uptakes”, and the “downcomer”. At the top of the uptakes are a series of pressure relief valves called “bleeders”. The downcomer delivers the dust-laden gas to the “dustcatcher” which will remove about 60% of the particulate matter in the gas. The gas then passes to a “gas cleaning system

24、” which will scrub the gas, removing 99.9% of the remaining particulate. At this point, the gas is a suitable fuel for the stoves and other areas.SMM, NEU2021-7-30141. What are the important components of the blast furnace plant?2. What is the lower portion of the blast furnace?3. Does the modern bl

25、ast furnace have much cooling equipment?4. What critical pieces of equipment are there in the casthouse?5. What will float on the iron and is separated from the iron by the “skimmer” after tapping?6. How many hot blast stoves does each blast furnace have?SMM, NEU2021-7-3015 1. 高爐車間高爐車間 2. 出鐵場出鐵場 3.

26、熱風(fēng)管熱風(fēng)管 4. 爐身爐身 5. 爐腹角爐腹角 6. 撇渣器撇渣器 7. 導(dǎo)出管導(dǎo)出管 8. 鐵溝鐵溝 9. 渣池渣池 10. 泥炮泥炮 11. 除塵器除塵器 12. 無鐘爐頂無鐘爐頂 13. 鐵口鐵口 14. 旋轉(zhuǎn)溜槽旋轉(zhuǎn)溜槽 15. 皮帶系統(tǒng)皮帶系統(tǒng)SMM, NEU2021-7-30161. A complete blast furnace p_ consequently comprises many components.2. The lower portion of the furnace is called the h_.3. The b_ is the wildest point

27、 of the furnace, it can be cooled by a variety of methods.4. The small bell opens, admitting the charge onto the large b_.5. Molten iron and slag produced in the blast furnace are removed and separated in the c_.6. There are two critical pieces of equipment in the casthouse: the t_ drill and the m_.

28、7. The modern blast furnace has much c_ equipment, such as high density copper cooling plates, cast-iron staves, external cooling channels, or shower cooling etc.8. The hot blast main connects with a ring main “b_ pipe” which encircles the furnace.9. The gas produced by the ironmaking process exits

29、from the top of the furnace and is delivered to the gas c_ system via a series of refractory-lined ducts referred to as “offtakes”, “uptakes”, and the “downcomer”.10. Blast furnace is a large refractory-lined steel v_ and the entire furnace requires cooling.SMM, NEU2021-7-3017notch support bleeders

30、undertaken ceramic skimmer double plug1. The furnace is built on a foundation of pilings and concrete to _ the furnace and burden.2. Above the iron notch is the slag _.3. Between the bosh and lower stack usually has a _ lining.4. The design of the cooling system and refractory should be _ together.5

31、. The charge is hoisted to the top of the furnace and dumped onto a _ bell and hopper arrangement.6. Liquid slag will float on the iron and is separated from the iron by the _ in the casthouse.7. The mudgun is used to _ the taphole at the end of the cast.8. At the top of the uptakes are a series of pressure relief valves called _.SMM, NEU2021-7-30181. The inside profile of the blast furnace is termed (from top