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冶金课件3英08《冶》Ex-Sintering

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冶金课件3英08《冶》Ex-SinteringPAGE 2 英08《冶金科技口译》Ex 3-Sintering and Pelletizing 烧结与球团 3.3 Listening –Note-taking –Interpreting 〔原文:汉译英-1 〕 矿石中极细的颗粒不能直接装入高炉,通常需要造块。重要的造块工艺是烧结生产和球团生产。 烧结生产工艺由5个阶段组成。第一阶段是把烧结原料与煤粉或焦粉混合;第二阶段是将混合料铺在(烧结台车的)箅条上;第三阶段是点火燃烧和烧结。当空气穿过混合料时,混合料中的燃料进行燃烧,形成的...

冶金课件3英08《冶》Ex-Sintering
PAGE 2 英08《冶金科技口译》Ex 3-Sintering and Pelletizing 烧结与球团 3.3 Listening –Note-taking –Interpreting 〔原文:汉译英-1 〕 矿石中极细的颗粒不能直接装入高炉,通常需要造块。重要的造块工艺是烧结生产和球团生产。 烧结生产工艺由5个阶段组成。第一阶段是把烧结原料与煤粉或焦粉混合;第二阶段是将混合料铺在(烧结台车的)箅条上;第三阶段是点火燃烧和烧结。当空气穿过混合料时,混合料中的燃料进行燃烧,形成的高温足以使这些细小的颗粒烧结成块,以便满足高炉冶炼的要求;第四阶段是冷却;第五阶段是进行装入高炉前的破碎和筛分。要获得更好的效果,可以加入粉状熔剂,使之在烧结过程中与矿石中的脉石结合。通常,烧结矿的含铁量为50%~60%。 〔原文:汉译英-2 〕 铁矿石是在目前的成本和市场价格条件下最经济的含铁材料了。就数量和成本来说,在能用来生产钢铁的原材料中,铁矿石是最重要的。铁是地球上最丰富的元素之一(大约占4%)。但是,因其化合物形式、物理形式、或地点的缘故,大部分铁至今都还没有得到应用。很多材料都含有铁,但是只有很少的部分用来生产铁。 铁矿石根据其化学成分进行划分,比如:氧化物、硫化物、碳酸盐和硅酸盐。氧化物矿石是铁的最重要的来源。其次依次是碳酸盐、硫化物和硅酸盐。 〔原文:英译汉-1 〕 In order to reduce fuel consumption, heat consumption and electric power consumption and to make full use of heat energy, various energy-saving technical measures are used in the design of sintering process, such as automatic weight batching, preheating of mixture by quicklime and steam, sintering grate layer material and thick bed operation; high efficiency energy saving igniter; variable frequency technology and improved production water recirculation rate. // In order to minimize impact of waste gas, fume, wastewater and noise on plant area and surrounding environment, advanced and proven technical measures are taken in this design to keep in effective control and treatment the pollution source during sintering production. 〔原文:英译汉-2 〕 During palletizing, the mixtures made from ultrafine iron ore concentrates (smaller than 0.074 mm in diameter or smaller than 200 mesh) and binders of grain sizes far less than 1 mm are balled to form “green” pellets which are slightly larger than 6 mm but smaller than 15 mm in diameter. The “green” pallets are then hardened by firing in a shaft-type furnace or rotary kiln or on a traveling grate. Pellets usually contain from 60 to 67 percent of iron. Compared with lump ores and sinter, the advantages of pellets are: a narrow size range, constant quality and good permeability during reduction. Further more, pellets are well suited for transport and storage. But, any swelling and sticking of pellets during the reduction phase must be avoided. 〔参考译文:汉译英-1〕 The ore that is too fine cannot be charged directly into blast furnace. It is usually agglomerated. The most important processes are sintering and palletizing. The sintering process is in five stages. The first stage is mixing of the raw materials and fine coal / or coke. The second stage is placing the mixture on a grate of the sintering pallet. The third stage is igniting and sintering. When air is drawn through the mixture, it burns the fuel at a temperature which is high enough to agglomerate the small particles so that they can be charged into the blast furnace satisfactorily. The fourth stage is cooling. The fifth stage is crushing and screening before charging to the blast furnace. For best results, pulverized flux is added to the sinter mix to combine with the gangue of the ore in the sintering process. Sinter usually contains 50 to 60 percent iron. 〔参考译文:汉译英-2〕 Iron ore is iron bearing material that can be used economically under current cost and market price conditions. Iron ore, among the raw material needed to make iron and steel, is the most important with regard to quantity and cost. Iron is one of the earth’s most abundant elements (about 4%). But, due to its chemical combination, physical form, or location, much of this iron is not in use today. Many minerals contain iron. However only a few are used commercially for the making of iron. Iron ores are classed by their chemical composition, such as oxide(氧化物), sulfides(硫化物), carbonates(碳酸盐), and silicates(硅酸盐). Oxide ores (氧化物矿石)are the most important sources of iron today. Next in importance are the carbonates, sulfides and silicates. 〔参考译文:英译汉-1〕 为了降低燃耗、热耗、电耗并充分利用热能,在烧结的工艺设计中采用了各种节能的技术措施,比如:自动重量配料;用生石灰和蒸汽预热混合料,烧结铺底料、厚料层操作;高效节能型点火器;变频调速技术和提高生产水的循环率等。 为减少废气、烟尘、废水和噪声对厂区及周围环境的影响,本设计中采用了先进成熟的技术措施,使烧结生产过程中产生的污染源得到有效控制和治理。 〔参考译文:英译汉-1〕 球团生产期间,由极细的铁精矿粉(小于0.074毫米或小于200目)以及粒度远小于1 mm的黏结剂组成的混合物首先制成直径略大于6 mm但小于15 mm的生球,然后将生球装入竖炉、回转窑或是移动床(带式焙烧机)上焙烧使之变硬。通常,球团矿含铁量为60%~67%。 与天然块矿和烧结矿相比,球团矿的优点是:有一个窄小的粒度范围,稳定的质量和良好的还原性,此外,球团矿适合于输送和贮存。但还原阶段球团矿的膨胀和黏结必须避免。
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