熱風(fēng)沖天爐是我公司在總結(jié)以往密筋爐膽沖天爐優(yōu)缺點(diǎn)的基礎(chǔ)上，經(jīng)過(guò)對(duì)各個(gè)技術(shù)參數(shù)重新優(yōu)化設(shè)計(jì)，并充分總結(jié)了在用戶中的使用情況而成的。密筋式換熱器采用優(yōu)質(zhì)容器鍋爐鋼板，主體埋弧焊焊接，焊縫按容器標(biāo)準(zhǔn)超聲波探傷；散熱片采用CO2氣體保護(hù)焊雙面連續(xù)焊焊接，布局合理，保證氣體充分紊流換熱。
      熱風(fēng)沖天爐分為單換熱器和雙換熱器兩種。爐缸形式分為固定式和移動(dòng)式兩種,具有合理的結(jié)構(gòu)。采用自身熱交換方式供風(fēng)，可獲得200－350℃的高溫?zé)犸L(fēng)，在層焦比1：8－1：10的情況下。鐵水溫度可達(dá)到1450－1520℃，換熱器下部法蘭采用翻邊沖壓法蘭。加料口和換熱器之間采用活動(dòng)連接，可以有效的避免因熱脹冷縮而拉裂換熱器，增加換熱器的使用壽命。
     熱風(fēng)沖天爐技術(shù)特點(diǎn)是：
1）采取雙重措施來(lái)解決爐膽的熱膨脹問(wèn)題，使其壽命比傳統(tǒng)的密筋爐膽壽命長(zhǎng)2～3倍；
2）優(yōu)化了爐膽結(jié)構(gòu)，降低了阻力系數(shù)，減少了供風(fēng)阻力；
3）爐體上段采用雙筒滑動(dòng)式結(jié)構(gòu)，爐體受熱膨脹后，可在此自由伸縮，解決因爐體膨脹導(dǎo)致?tīng)t底板變形等問(wèn)題；
4）熱風(fēng)溫度大于200℃，在降低能耗、提高鐵水質(zhì)量等方面具有明顯效果，同時(shí)能夠解決風(fēng)口掛渣問(wèn)題，降低操作者的勞動(dòng)強(qiáng)度。
     熱風(fēng)沖天爐技術(shù)參數(shù)： 
1）熱風(fēng)溫度：150-250℃
2）一般層焦比：1：8-10　
3）鐵水溫度：1450—1500℃
4）生產(chǎn)率1-30t/h

Hot Air Cupola
Hot Air Cupola is designed on the base of dense tendons furnace tube cupola , which has a optimal design of all the data. Dense tendons furnace internal adopts top quality boiler plate, submerged arc welding, and ultrasonic flaw detection. The cooling fin adopts CO2 protecting double-surface continuous welding. Its reasonable layout ensures enough heat exchange of the air.

Hot Air Cupola has 2 kinds’ heat exchangers. Fixed type and movable type are the form of hearth.
It use itself heat exchanging to supply air, which can get 200 －350℃ hot air, when the layer ratio reach 1：8－1：10. The temperature of the hot iron can reach 1450－1520℃. The flange under the heat exchanger adopts stamp flange. The connection between the charging gate and the heat exchanger is flexible one, which effectively avoid the break of the heat exchanger when thermal expansion and contraction, reaching a long life usage.
 
Hot Air Cupola Characteristics:

1) Two kinds of method to solve thermal expansion problem and the life now are 2 to 3 times longer than traditional furnace.
2) optimal design of the structure on the cupola; reduces the drag coefficient, reducing the supply air resistance
3) The up section of the furnace adopts double tube sliding type, which can expand freely when the furnace meets thermal expansion. It can avoid bottom plate deformation.
4) The temperature of the hot air can be greater than 200℃, which can reduce energy consumption and improve the quality of hot metal .

Technical Data of Hot Air Cupola :

1) Hot air temperature         150-250℃
2) General layer of coke rate     1：8-10
3) Hot metal temperature        1450—1500℃
4) Productivity                1-30t/h