越南清化25萬噸煉鋼連鑄工程設(shè)計方案+(最后修改稿)12-18上午00

1、越南清化25萬噸煉鋼連鑄工程設(shè)計方案1.1 編制依據(jù)越南清化冶金股份總公司25萬噸煉鋼工程項目招標文件；越南清化冶金股份總公司提供的有關(guān)工程設(shè)計資料；越南清化冶金股份總公司與中方技術(shù)交流會議紀要。1.2 建設(shè)規(guī)模及產(chǎn)品大綱 建設(shè)規(guī)模越南清化冶金股份總公司籌建的鋼鐵聯(lián)合企業(yè)，包括選礦、石灰、豎爐、燒結(jié)、煉鐵廠、煉鋼廠以及氧氣站、煤氣系統(tǒng)、給排水等公用設(shè)施和生產(chǎn)輔助設(shè)施等，生產(chǎn)鋼種主要為普通碳素結(jié)構(gòu)鋼和低合金鋼，工廠現(xiàn)階段的產(chǎn)品暫定為連鑄坯，建成后年產(chǎn)合格連鑄坯25萬噸。1.2.2 產(chǎn)品大綱（1）鋼種和產(chǎn)量及比例鋼種及產(chǎn)量比例序號鋼種代表鋼號比例（%）1普通碳素結(jié)構(gòu)鋼Q195、Q235502低 合

2、 金 鋼Q295、Q34550合計100（2）連鑄坯產(chǎn)品規(guī)格及比例序號鑄坯斷面（mm）產(chǎn)量（萬噸）占比例（%）1120×120502130×#215;15010合計25100鑄坯定尺長度： 6m，9m1.3 工程建設(shè)內(nèi)容工程建設(shè)內(nèi)容包括年產(chǎn)45萬噸鐵精礦的選礦廠、一個以5m2豎爐為核心設(shè)備，年產(chǎn)10萬噸球團的球團廠、一個由36m2燒結(jié)機及輔助設(shè)備組成，年產(chǎn)燒結(jié)礦37萬噸的燒結(jié)廠、一座230m3高爐、一個以20t轉(zhuǎn)爐和一臺3流小方坯連鑄機為主要設(shè)備的煉鋼廠以及配套建設(shè)的4500Nm3/h氧氣站、高爐煤氣回收和利用系統(tǒng)、空壓站、給排水、供配電等公用設(shè)施和

3、轉(zhuǎn)爐汽化冷卻、各生產(chǎn)設(shè)施的通風(fēng)除塵系統(tǒng)、檢化驗、機修等生產(chǎn)輔助設(shè)施以及總圖運輸和土建工程等。工程建成后，工程自成生產(chǎn)體系，年產(chǎn)合格連鑄鋼坯25萬噸。1.4 設(shè)計指導(dǎo)思想（1）以工程建成后取得最大經(jīng)濟效益為目標，工程設(shè)計本著少投入、多產(chǎn)出的原則，合理確定生產(chǎn)工藝路線和生產(chǎn)設(shè)備選型，保持技術(shù)和設(shè)備的先進性。（2）從聯(lián)合企業(yè)整體和生產(chǎn)的實際需要出發(fā)，注重各生產(chǎn)設(shè)施的生產(chǎn)能力、技術(shù)水平的均衡配置，注重各生產(chǎn)工序的銜接。（3）各生產(chǎn)系統(tǒng)均采用目前在中國成熟、可靠、節(jié)省投資的工藝技術(shù)和設(shè)備，不采用沒有經(jīng)過實際檢驗的技術(shù)和設(shè)備。在此基礎(chǔ)上采用具有一定先進性的技術(shù)，如高爐煤粉噴吹和富氧鼓風(fēng)技術(shù)；轉(zhuǎn)爐濺渣護爐技

4、術(shù)；高爐和轉(zhuǎn)爐除塵技術(shù)；水處理系統(tǒng)的先進技術(shù)等。（4）從技術(shù)和經(jīng)濟兩個方面綜合考慮，采用水平適當(dāng)?shù)模訮LC為核心的自動化控制技術(shù)和系統(tǒng)。（5）注重環(huán)保、勞動安全、工業(yè)衛(wèi)生、能源和消防，嚴格執(zhí)行有關(guān)的法律、法規(guī)、標準。貫徹生產(chǎn)設(shè)施和環(huán)保、勞動安全、工業(yè)衛(wèi)生、能源和消防設(shè)施同時設(shè)計、同時建設(shè)的原則。（6）總圖布置做到布置合理、節(jié)省用地、物流順暢、運輸方便、環(huán)境美化。1.5 全廠生產(chǎn)工藝 全廠工藝流程礦石選礦廠精礦粉石灰窯生石灰燒結(jié)機膨潤土豎爐球團礦熔劑、燃料、返礦、雜料燒結(jié)礦焦炭、塊礦230m3高爐混鐵爐20t轉(zhuǎn)爐鑄鐵機連鑄機LF爐（預(yù)留）連鑄坯噴煤生鐵塊生石灰全廠工藝流程圖 工藝流程說明選礦廠

5、為連續(xù)工作制，年平均工作310天；選礦廠生產(chǎn)能力：45萬t/a；燒結(jié)車間一臺36m2燒結(jié)機，為連續(xù)工作制，年平均工作330天；燒結(jié)機生產(chǎn)能力：萬t/a；燒結(jié)機消耗精礦粉：33萬t/a（干量）；豎爐車間一臺5m2豎爐，為連續(xù)工作制，年平均工作330天；豎爐生產(chǎn)能力：10萬t/a；豎爐消耗精礦粉：萬t/a（干量）；煉鐵車間一座230m3高爐，為連續(xù)工作制，年平均工作350天，出鐵次數(shù)約15次，每次出鐵時間25min；高爐生產(chǎn)能力：24萬t/a；高爐消耗燒結(jié)礦：萬t/a，當(dāng)燒結(jié)機檢修時高爐用倉底料或落地?zé)Y(jié)礦維持生產(chǎn)；高爐消耗球團礦：10萬t/a，當(dāng)豎爐檢修時高爐用倉底料或落地球團礦維持生產(chǎn)；煉鋼車

6、間一座20t轉(zhuǎn)爐，連續(xù)工作制，平均冶煉周期32min/爐、日產(chǎn)45爐，年平均工作310天；轉(zhuǎn)爐生產(chǎn)能力：26萬t/a；轉(zhuǎn)爐消耗鐵水：萬t/a；高爐與轉(zhuǎn)爐生產(chǎn)節(jié)奏不協(xié)調(diào)，可通過300t混鐵爐得以緩沖解決，混鐵爐為轉(zhuǎn)爐可周轉(zhuǎn)8小時左右。當(dāng)轉(zhuǎn)爐檢修時高爐鐵水送鑄鐵機澆鑄鐵塊。鑄鐵機生產(chǎn)能力：800t/d。1.6 全廠物料平衡高爐煤氣放散原料場鐵精粉45萬噸/a石灰窯原料場生石灰萬噸/a36m2燒結(jié)機燒結(jié)礦萬噸/a豎爐球團礦10萬噸/a膨潤土萬噸/a白云石燃料230m3高爐鐵水24萬噸/a石灰石焦炭無煙煤300t混鐵爐40m鑄鐵機800t/d高爐水渣(商品)萬噸/a生鐵塊(廢鋼/商品)20t轉(zhuǎn)爐26萬

7、噸/aCCM連鑄坯25萬噸/a高爐煤氣萬 Nm3/hLF爐(預(yù)留)入廠內(nèi)管網(wǎng)萬m3/h鐵合金熔劑選礦廠1萬噸/a33萬噸/a萬噸/a萬噸/a10萬噸/a萬噸/a萬噸/a萬噸/a萬噸/a萬噸/a萬噸/a自用萬 Nm3/h萬噸/a萬噸/a萬噸/a萬噸/a1.7 主要生產(chǎn)設(shè)施 選礦根據(jù)年產(chǎn)25萬t鋼坯的生產(chǎn)規(guī)模，需提供45萬t鐵精礦，為此選礦廠設(shè)計規(guī)模為90萬t/a原礦（其中考慮采礦廢石混入率為15%，選礦鐵精礦的產(chǎn)率為59%）。按選礦廠規(guī)模的劃分原則，設(shè)計的鐵礦選礦廠為小型選礦廠。 豎爐選用一座5m2豎爐及其輔助配套設(shè)施，年產(chǎn)成品球團礦10萬噸。 燒結(jié)36m2的帶式機燒結(jié)機1臺，燒結(jié)機利用系數(shù)為2

8、.h，年產(chǎn)成品燒結(jié)礦萬噸，主機年工作日330天，作業(yè)率為90.4%。 高爐一座230m3，3.d，年工作天數(shù)為350天，高爐年產(chǎn)煉鋼生鐵24萬噸。 煉鋼新建一座20t轉(zhuǎn)爐、300噸混鐵爐、R8連鑄機及配套設(shè)施等。煉鋼用鐵水由同時建設(shè)的230 m3高爐供應(yīng)，年產(chǎn)合格鋼水26萬噸，全部送連鑄機鑄坯，年產(chǎn)小方坯25萬噸。 石灰窯新建一座250m3氣燒石灰窯，主要燃料為高爐煤氣，日產(chǎn)活性石灰200t，活性石灰活性度大于300。 制氧站為了供給煉鋼、連鑄及高爐富氧鼓風(fēng)，建設(shè)一座4500Nm3/h氧氣站，將氧氣和氮氣通過管網(wǎng)供給用戶。 空壓站全廠壓縮空氣綜合最大耗量約為80 Nm3/min。根據(jù)廠區(qū)布局和

9、煉鐵、燒結(jié)、煉鋼等主要用戶耗量情況，擬新建1座全廠空壓站，且將空壓站設(shè)在廠區(qū)中心，以便于供給全廠各車間用氣。 開關(guān)站工程供電負荷的分類情況可分為五部分，即選礦系統(tǒng)、鐵前系統(tǒng)（含原料場系統(tǒng)、燒結(jié)系統(tǒng)、球團系統(tǒng)、石灰窯系統(tǒng)）、煉鐵系統(tǒng)、煉鋼和連鑄系統(tǒng)、4500m3/h制氧站。其負荷情況和計算負荷如下:工程的×108 kWh。1.8 說明技術(shù)方案是根據(jù)越方提供的河北理工大學(xué)資源與環(huán)境學(xué)院的“鐵礦石選礦試驗研究報告”編制的，如果新做的選礦試驗研究數(shù)據(jù)發(fā)生變化，本技術(shù)方案將做較大調(diào)整。2選礦廠2.1 項目概述 選礦廠規(guī)模根據(jù)年產(chǎn)25萬t鋼坯的生產(chǎn)規(guī)模，需提供45萬t鐵精礦，為此選礦廠設(shè)計規(guī)模為

10、90萬t/a原礦（其中考慮采礦廢石混入率為15%，選礦鐵精礦的產(chǎn)率為59%）。按選礦廠規(guī)模的劃分原則，設(shè)計的鐵礦選礦廠為小型選礦廠。 原礦性質(zhì)及選礦試驗評價.1 原礦性質(zhì)平均品位 TFe 53.20% 含量低物相分析結(jié)果，原礦中的鐵礦物主要為磁性鐵礦物，分布率達到71.13%，還有一定量的非磁性鐵礦物和弱磁性鐵礦物，如硅酸鐵、赤鐵礦、褐鐵礦等。原礦比重（密度）為折算松散密度為.2 選礦試驗評價由河北理工大學(xué)做的小型試驗結(jié)果為在磨細度-200目占67%，經(jīng)兩次磁選后，可獲得產(chǎn)率為59%，品位為65.23%，回收率為72.34%的鐵精礦。推薦的選礦方法為單一磁選法，由二次磁選組成。試驗指標尚好，有

11、一定的深度，對于這類易選礦石，可作為選礦設(shè)計的依據(jù)。其中兩個問題值得完善：第一、礦樣代表性問題，試樣的代表性就是試驗所用試樣和設(shè)計的選礦廠投產(chǎn)后所處理的礦石的符合程度，樣品中是否配進一定量的廢石（如頂板、圍巖、夾層等部分的廢石）未作說明；第二、對于弱磁性礦物的回收未進行考查。2.2 工藝流程的選擇The Selection Process 工作制度及生產(chǎn)能力system of work and productivity工作制度，全年按300天工作。破碎車間按三班工作制，每班設(shè)備運轉(zhuǎn)5小時。磨礦、磁選、脫水車間三班工作制，每班設(shè)備運轉(zhuǎn)8小時。生產(chǎn)能力：年處理原礦90萬t日處理原礦3000t小時處

12、理原礦破碎200t磨選125t Working system, throughout the year by 300 days of work.Crushing plant by three-shift working system, each class equipment running 5 hours.Grinding, magnetic separation, dehydration plant operates three shifts system, class equipment operation 8 hours.Capacity:Annual processing ore 9

13、00,000 tDaily processing ore 3000tHours to handle ore crushing 200tGrinding and separation 125t 工藝流程的選擇Process Selection（1）破碎流程采用三段一閉路流程；（2）磨礦采用一段磨礦流程；（3）磁選采用二次磁選流程；詳見工藝質(zhì)量流程圖 (1) The crushing process using three sections and one closed-loop process;(2) Grinding the ore with one section grinding proc

14、ess;(3) Two times magnetic separation process;See the quality process flow chart選礦工藝質(zhì)量流程圖Quality of beneficiation process flow chart2.3 主要工藝設(shè)備的選擇The selection of main process equipment （1）破碎設(shè)備粗碎：900×1200鄂式破碎機中碎：1650液壓園錐破碎機細碎：1650液壓短頭園錐破碎機篩分：1800×3600自定中心振動篩(1) Crushing EquipmentRough broke

15、n: 900 × 1200 Jaw CrusherMiddle broken: 1650 hydraulic cone crusher Fine Crushing: 1650 hydraulic short head cone crusher screening: 1800 × 3600 self-center shaker（2）磨礦設(shè)備球磨機：2700×3600格子型球磨機分級機：2000沉沒式螺旋分級機(2) Grinding EquipmentBall Mill: 2700 × 3600 lattice-type ball millClassifi

16、er: 2000 sinking spiral classifier（3）選別設(shè)備磁選機：CTB濕式永磁筒式磁選機(3) Sorting EquipmentSeparator: CTB Wet Magnet Drum Separator（4）脫水設(shè)備(4) Dewatering Equipment（5）永磁脫水槽(5) permanent dewatering tank（6）筒型內(nèi)濾式真空過濾機 (6) cylinder-type vacuum filter within the filter2.4 選礦廠建（構(gòu)）筑物說明concentrator construction (structure

17、s) Buildings Description按順序排列：有粗碎廠房，中細碎廠房，篩分廠房，主廠房，磁選廠房，脫水廠房等。In sequence: there are thick broken plants, middle crushing plant, screening plant, main plant, magnetic separation plant, dehydration plant and so on.主廠房之前的廠房都是由膠帶輸送機（皮帶通廊）聯(lián)系全廠區(qū)，特點之一是廠房之間拉得很開。因為平地建廠為滿足高度的要求，膠帶輸送機將礦石流，只有運得遠才能提升得高，特點之二是各廠房

18、布置要么垂直，要么平行，而不能呈其它角度布置。Prior to the main factory plant is connected by belt conveyor (belt Corridor) contact whole works, one characteristics is very open between the plant. Because the plant is built on the ground, to meet the high requirements, belt conveyor transported ore stream very far in orde

19、r to enhance high, the second characteristic is the plant layout either vertical, or parallel, the other point of view was not arranged.各廠房特點分述如下：The plant features are as follows:粗碎廠房：如果采場來礦標高就是地面，粗碎廠房將全部位于地下成為地下廠房。粗碎廠設(shè)有受料倉即粗礦倉。Rough broken factory: If the elevation of stope is ground ± 0.00,

20、primary crushing plant will be fully into underground powerhouse. Rough broken plant has receiver hopper ( coarse ore storage silos).中細碎廠房：此處中、細碎設(shè)備配置一起，節(jié)省廠房便于生產(chǎn)管理。Middle crushing plant: Here, the Middle and fine crushing device configuration together, to save the plant space and easy to production m

21、anagement.膠帶輸送機二進一出，廠房內(nèi)平臺層次較多。Belt conveyor 2 input, 1 out ,plant is built with more platform. 篩分房：獨立篩分廠房便于防塵。Screening Room: Independent screening plant easy to dust.主廠房：前有粉礦倉，粉礦倉采用高架式，一臺球磨機對一座粉礦倉。廠房建筑面積大、高度高、起吊設(shè)備也大。Main building: in front of the main building there is the fine ore storage, which w

22、ith overhead. A ball mill matches a mine warehouse.Plant is big area, very high, with the bigger lifting equipment i.脫水廠房：與產(chǎn)品礦槽相鄰。Dehydration plant: and is adjacent with the products mines slot.2.5 選礦廠給排水Water Supply and Drainage Concentrator選礦是耗水大戶，單位礦石耗水為35m3/h。設(shè)計取擴大指標為1t礦耗4t水，則每天耗水萬m3，其中有新水和回水?；厮?/p>

23、可占一半以上，給水部位應(yīng)有高位水池，保證有充足的新水。也要設(shè)回水池，能回收的水盡量回收，比如濾液水，尾礦濃縮溢流水。Beneficiation waster a lot of water, one ton mineral cost 3 5m3 / h water. Here designed to expand the indicators to take 4t water per ton mineral, then it will cost daily consumption 12000 m3 water, including new water and backwater. Backwat

24、er that could account for more than half, high level pool shall be supplied in the feeding water position to ensure that there is sufficient fresh water. And return pool shall be set, too, the water can be recycled shall be recycled as soon as possible, such as the filtrate water, tailings concentra

25、te overflow water.2.6 尾礦設(shè)施Tailings Facilities尾礦設(shè)施由尾礦沉淀池、尾礦輸送系統(tǒng)、回水輸送系統(tǒng)組成。尾礦沉淀池也稱尾礦庫，又由尾礦壩、排水管，排水井組成。壩體要建在三面環(huán)山的地方，可節(jié)省建筑費增加庫容。尾礦設(shè)施的造價因壩體狀態(tài)不同差異很大，一般占選礦廠總投資的1020%。 The tailings facility is made up of the tailings settling pond, tailings conveying system, backwater conveying system. Tailings settling pond

26、, also known as tailings warehouse, but also formed by a tailings dam, drains, and drainage wells. Dam shall be built in areas three side surrounded by the mountain can save construction costs and increase storage capacity. The cost of Tailings dam facilities is vary widely due to the different dam

27、body, generally accounting for a 10 20% of total investment of concentrator.2.7 選礦廠供配電Concentrator Power Supply and Distribution選廠裝機容量4066kW ，除球磨機為6000V高壓電動機外，其余為380V。Dressing plant capacity is of 4066kW, except the 6000V high-voltage motors ball, the other motors is 380V.2.8 生產(chǎn)過程程序控制production proc

28、ess control在破碎篩分間In the crushing and screening rooms開車順序為：振動篩細碎中碎粗碎停車順序為：粗碎中碎細碎振動篩Driving in the order: Vibrating Screen crushing coarse broken in piecesParking in the order: coarse middle broken into pieces crushing vibrating screen2.9 選礦廠除塵Dust Concentrator選礦廠生產(chǎn)中粉塵較大的是粗碎機進料口、中細碎進料口、排料口、篩分廠房，這些地方都需

29、裝除塵器，降低粉塵濃度。During Concentrator the bigger dust was from the feeding mouth of coarse crusher, feed in small and fragmented population, nesting population, screening plant, these places are required to install filter to reduce dust concentrations.2.10 生產(chǎn)計量和檢測 計量裝置生產(chǎn)計量、檢測，在球磨前的皮帶設(shè)置皮帶秤共4臺，計量生產(chǎn)量。 檢測裝置設(shè)置

30、取樣機，主要取出鐵精礦礦漿樣，以供化驗使用。2.10 Production measurement and testing metering deviceMeasure of production, testing and milling before the belt in the belt scale to set a total of four sets of measuring production. DetectorSet sampling machines, mainly iron ore pulp samples removed for laboratory use.3豎爐Sha

31、ft furnace3.1 生產(chǎn)規(guī)模The scale of production選用一座5m2豎爐及其輔助配套設(shè)施，年產(chǎn)成品球團礦10萬噸。主要設(shè)計指標見表3-1。use 5m2 shaft furnace and its auxiliary facilities, and an annual output of finished pellets 0.10millon tons annually, The main design specifications sees Table 3-1.表3-1 5m2豎爐主要設(shè)計指標Table 3-1 5m2 shaft furnace main des

32、ign target序號項目指標1焙燒面積5m22日產(chǎn)量300t3年產(chǎn)量10萬t4年工作日330天5作業(yè)率90.40%6豎爐利用系數(shù)2.h7轉(zhuǎn)鼓指數(shù)（%）大于75%8鐵精粉膨潤土豎爐消耗煤氣210-290m3/t球氮氣或蒸氣少量檢修用水電20kwh/t球25kwh/t球9豎爐本體占地面積700m2No. Item IndexA baking area of 5m22 output 300t3 annual output 100,000 t4 years working for 330 days5 work rate 90.40%6 shaft furnace utilization coeff

33、icient of 1.2 1.3t/m2.h7 drum index (%) is greater than 75% of8 Tie Jingfen 1.06t / t ballBentonite <0.03t / t ballShaft furnace gas consumption of 210-290m3 / t ballRepair with a small amount of nitrogen gas or vaporWater 0.06t / t ballElectric 20kwh / t ball-25kwh / t ball9 Shaft Furnace covers

34、 an area of 700m23.2 工作制度work system豎爐球團生產(chǎn)為連續(xù)工作制度，四班三運轉(zhuǎn)，每天三班，每班工作8小時，主機作業(yè)天數(shù)292天，作業(yè)率80%。Shaft furnace pellet production as a continuous work system, four classes running three a day, three shifts, eight hours per shift, host machine operating 292 days, operating rate of 80%.3.3 原燃料 含鐵原料 ferrous raw m

35、aterial一座5m2豎爐年產(chǎn)球團礦10萬t年需要含鐵原料萬t（干基）。磁性鐵精粉：TFe66%，F(xiàn)eO20%，粒度200目75%，水份10。A 5m2shaft furnace annual produce 100,000 t of pellets, needs an iron-containing raw materials 106,000 t (dry basis).Magnetic Tie Jingfen: TFe 66%, FeO 20%, particle size -200 mesh 75%, moisture "10%.典型的鐵精粉化學(xué)成分見下表： chemical

36、 composition of the typical concentration see the table below:名稱TFeFeOCaOMgOSiO2Al2O3SP水分鐵精粉2710 粘結(jié)劑 Binder粘結(jié)劑主要用來改善物料的成球性能，豎爐球團一般采用膨潤土作為粘結(jié)劑。膨潤土化學(xué)成分見下表：Binder is mainly used to improve the performance of the material into a ball, shaft furnace pellets commonly used bentonite as a binder. Chemical co

37、mposition of bentonite in the table below:名稱SiO2Al2O3CaOMgOTFe膨潤土Name SiO2 Al2O3 CaO MgO TFe粒度-200目>95%，膠質(zhì)價68ml/15g，吸蘭量30g/100g，膨脹容量10ml/g，水份<10。-200 Mesh size "95%, glial price 68ml/15g, the amount of absorption Lan 30g/100g, expansion of capacity of 10ml / g, water" 10%.3.4 工藝流程鐵精粉

38、用裝載機裝入精粉倉，經(jīng)圓盤給料機送至配料膠帶機上；膨潤土用人工卸至膨潤土倉，經(jīng)圓盤給料機送至配料膠帶機上。配合料由配料膠帶機送入2.0×6（m）圓筒混合機，混合料用膠帶機送至造球機上。鐵精粉與膨潤土被裝到圓盤造球機上，“滴水成球，霧水長大”制成生球。所有生球直接從圓盤造球機滾落到生球篩。經(jīng)過生球篩將小于6mm粉料和大于20mm生球篩除，返回重新造球；6-20mm合格生球經(jīng)膠帶機送至豎爐爐頂布料。進入豎爐的合格生球，在爐內(nèi)下降過程中與上升的熱氣體相遇，在爐內(nèi)完成干燥、預(yù)熱、焙燒、均熱、冷卻等過程，成品礦在環(huán)行排料機上冷卻，再經(jīng)地下料倉送入排料小車，用斜橋卷揚運至成品料場。在開爐與平時調(diào)

39、節(jié)爐況時，需補充熟球團礦。通過提升機，人工加料。豎爐用煤氣來自已有的煤氣高爐，煤氣壓力應(yīng)大于4KPa，煤氣總流量3000-3500Nm3/小時，煤氣熱值3。豎爐配備助燃風(fēng)機1臺。豎爐除塵系統(tǒng)配備廢氣引風(fēng)機1臺。 總裝機容量約：600kW主要污染源及其控制措施豎爐生產(chǎn)全部采用凈化的高爐煤氣。 從豎爐引來的廢氣，被送入多管除塵器，而后引風(fēng)機將廢氣送入煙囪排放。所有爐塵仍可作為生產(chǎn)球團的原料或送燒結(jié)回收利用，無任何外排，不產(chǎn)生二次污染。3.4 ProcessTie Jingfen loader loaded with flour warehouse, sent through the disc fe

40、eder ingredients tape machine; bentonite from bentonite artificial unloading positions, sent through the disc feeder ingredients tape machine. Batch from the batching belt conveyor into the 2.0 × 6 (m) drum mixer, mix tape making machine sent the ball machine.Tie Jingfen and bentonite were load

41、ed into the disc pelletizer, the "water dripping into a ball, fog grow up" the ball made of Health. All the students are the ball directly from the disc pelletizer Health and the ball rolled into the sieve. After health screening will be less than 6mm ball powder and greater than 20mm pell

42、et screening, return to re-pelletizing; 6-20mm Qualified Health sent the ball through the tape machine shaft furnace roof fabric.Into the vertical furnace of qualified health ball down in the furnace during the encounter with the rising hot gases in the furnace to complete drying, preheating, roasti

43、ng, soaking, cooling and other processes, finished mine in the ring discharge machine cooling, and then The underground silo discharge into the car, with the bridge of winch shipped to the finished product yard.In open furnace with the usual conditioning furnace conditions, the need to add cooked pe

44、llets. Through the hoist, artificial feeding.Shaft furnace with the gas from the existing gas furnace, gas pressure should be greater than 4KPa, the total gas flow 3000 - 3500Nm3 / hour, gas heating value 3.35MJ/Nm3.Combustion fan shaft furnace is equipped with a platform.Shaft furnace dust removal

45、system is equipped with an exhaust gas suction fan units.Total installed capacity is about: 600kWMajor sources of pollution and its control measuresShaft furnace used in all production of blast furnace gas purification.Drawn from the shaft furnace exhaust, was admitted to multi-tube dust collector,

46、and then induced draft fan to exhaust into the chimney emissions.All furnace dust may act as a raw material for production of pellets, or send sintering recycling, without any outside row, do not produce secondary pollution.4燒結(jié)4.1 概述Overview越南清化冶金股份總公司新建1臺 36m2帶式燒結(jié)機， 年產(chǎn)高堿度燒結(jié)礦萬噸，全部供同步建設(shè)的230m3高爐使用。燒結(jié)由

47、燃料破碎、配料室、一次混合室、二次混合室、燒結(jié)室、主抽風(fēng)機室、帶冷及冷篩室、皮帶通廊、轉(zhuǎn)運站及相應(yīng)的輔助生產(chǎn)設(shè)施等組成。燒結(jié)生產(chǎn)為連續(xù)工作制，采取四班三運轉(zhuǎn)。燒結(jié)車間主機年工作330天，作業(yè)率為90.4%。Vietnam's Thanh Hoa Metallurgical Corporation of shares with a new one Taiwan 36m2 sintering machines, annual output of high-basicity sinter 371,000 tons, all for the simultaneous construction

48、of 230m3 blast furnace use.Sintered by fuel crushing, batching room, a mixing chamber, the second mixing chamber, sintering room, the main exhaust fan room, with a cold and cold screening room, belts Corridor, transfer stations and the corresponding auxiliary production facilities, etc.Sinter produc

49、tion system of continuous work to take three-four times running. Sintering plant host 330 days of work, work rate was 90.4%.4.2 設(shè)計生產(chǎn)規(guī)模及產(chǎn)品方案Design of production scale and scheme 設(shè)計生產(chǎn)規(guī)模Design of production scale36m2的帶式燒結(jié)機1臺，燒結(jié)機利用系數(shù)為2.h，年產(chǎn)成品燒結(jié)礦萬噸，主機年工作日330天，作業(yè)率為90.4%。36m2's belt sintering machine 1

50、 sets, sintering machine utilization factor for 1.3t/m2.h, annual output of finished sinter ore 371,000 tons, hosting annual day for 330 days, the operating rate was 90.4%. 產(chǎn)品方案Product Scheme燒結(jié)產(chǎn)品為溫度低于150冷燒結(jié)礦，粒度為5mm，燒結(jié)礦二元堿度，品位TFe56%。產(chǎn)品指標見下表。Sintered products for the temperature below 150 cold sinter

51、the particle size of 5mm, dual basicity sinter 1.8, grade TFe56%. Product index in the table below.表4-1 產(chǎn)品指標Index of the product產(chǎn)品名稱TFe %FeO %CaO/SiO2粒度mm溫度燒結(jié)礦56±1105mm150Product Name TFe% FeO% CaO/SiO2 size mm Temperature Sinter 56 ± 1 10 1.8 5mm 1504.3 工藝流程說明燒結(jié)車間的工藝流程從燃料破碎系統(tǒng)開始到成品燒結(jié)礦運出為止。

52、工藝流程詳見燒結(jié)工藝流程圖4-1。Process DescriptionSintering process plant crushing system from the beginning to the finished fuel sinter out of date. See Sintering Process Flow Chart 4-1.煙囪chimney富礦粉High-grade ore powder0-10mm鐵精粉、雜料Tie Jingfen, miscellaneous material0-10mm焦炭0-25mm熔劑fluc0-3mm破碎0-3mm配料室Ingredients

53、room一次混合mixer加水watering二次混合加水布料燒結(jié)sinterCodebackore冷返礦煙氣電除塵器ESP主抽風(fēng)機The main exhaust fan破碎broken0-150mm鼓風(fēng)冷卻blasting cooling冷篩分cold 散熱額寧0-5mm5mm高爐BF10-20mm鋪底料BEDDING material圖4-1 燒結(jié)工藝流程圖flowprocess of sinter 燃料準備Fuel preparation燃料經(jīng)破碎系統(tǒng)破碎至合格粒度，破碎產(chǎn)品為30mm，由皮帶機運入配料室燃料配料倉。The fuel to pass through the broken

54、 system, broken grain, broken products 3 0mm, by the conveyor into the batching chamber fuel storage ingredients. 配料配料室分為配料倉和儲存?zhèn)}，共設(shè)12個配料倉，呈單列布置，料倉為金屬結(jié)構(gòu)。含鐵原料、雜料、固體燃料、輕燒白云石和石灰石均采用自卸汽車或推土機給入配料室儲存?zhèn)}，經(jīng)過抓斗起重機運到配料倉；生石灰經(jīng)管道用氣力輸送入配料倉內(nèi)。配料采用自動重量配料，含鐵原料采用直拖式電子皮帶秤配料；焦粉、無煙煤、返礦、雜料、輕燒白云石和石灰石采用直拖式電子皮帶秤給料；生石灰采用螺旋秤配料。配料

55、比的設(shè)定、變更等均在主控室集中操作。 BatchingBatching chamber is divided into ingredients warehouse and storage warehouses with a total of 12 ingredients warehouse, was a separate arrangement, silos for the metal structure. Iron-containing raw materials, mixed materials, solid fuel, light-burned dolomite and limeston

56、e are used dump truck or a bulldozer into the dosing chamber to the storage warehouse, after a grab crane transported to the ingredients warehouse; quicklime through the pipeline conveying gas into the ingredients warehouses. Ingredients with automatic weight of the ingredients, ferrous materials using direct drag-type electronic belt ingredients;