For a plant of 0.5 million t/a capacityand with the same product mix (small section and wire products), the short process is 20% lo-war in energy consumption, 21% lower in capital cost, 20% less in manpower and 35% less inland, 50% lower in environmental pollution than the long process, but its operating cost is10% higher.
By using chemical deoiling precipitators or improved cyclone precipitat- ing tanks with new mechanical deoiling machines, and dewatering equipment with rotary self-rinsing devices for sludge, a clean short process for recirculating sewage treating system may work instead of the conventional long process.
According to the characteristics of large-scale steel enterprises with long process flow, the authors discuss the system structure of a particular and applied CIMS which has 7 application functions and 6 layers, and propose the electronic commerce interface and the information integration model.
As an economical character in future society, the production route (especially BF-BOF process) of steel plants should possess three functions:function of steel product manufacture;
This paper introduces the status of traditional advanced iron making process and COREX smelting reduction process with respect of energy reusing and resources recycling.
Plant species frequently well adapt to their original "nutrition habitat" during a long process of evolution, and the apparent preference for ammonium or nitrate nitrogen source (NH4+ or NO3-) might be an important aspect of the adaptation.
The effect of 20-day thermal ageing on the tensile strength and breaking extension ratio of POM is not obvious, showing that the ageing of POM is quite a long process.
Finally, it shows that East Africans understand AIDS not as a singular event in their history, but as the culmination of a century-long process of changing spiritual imaginaries, bodily well-being and livelihoods.
There are two processes of iron and steel production, namely, the short process and the lo-ng process. A natural division exists depending on plant capacity and its product mix, i. e. theshort process is being employed mostly in small plants for producing long products, while thelong process in large plants for flat products. Compared with the large capital cost and longconstruction period of large-sized plants, small-sized plants arc comparatively flexible, practicaland easy to winprotection and support fr...
In order to assure the semi-finished qualities, the long pretreatment process is recommended for OE-spinning coarse calicos. Parameters in this process are presented in more details.
This paper introduces the structure of steel products produced by over one thousand local iron and steel plants in China, most of them are of conventional BF-converter route. The total capacity and it porportions in whole nation are listed. In 1989, one third of the nation's iron and rolled steel and one forth of crude steel were produced by these plants which have played a positive role in the development of local economy in China.
长流程
long process
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