Abstract
The need for metal usage is indispensable in the daily activities of human life. Metal is needed for the construction of different infrastructures such as houses, roads, bridges etc but despite the fact there is huge amount of metal available, it does not meet the global demand. Thus this paper investigated continuity of refinery as a measure to improve the efficiency of Electric Arc Furnace. In order to achieve maximum precision during production, getting the product at relatively reduced price has remained a major problem to Scientists. The experiment was conducted at industrial scale whereby the time was varied from 20 to 40 minutes while energy consumption rose from 0.0542 to 0.1103 mW-Hour/ton and productivity fell from 253.0 to 99.2 ton/Hour .The data were collected from active furnace in Zerepaves Metallurgical plant, Russia and analyzed with software package for accuracy. It can be concluded that increasing refinery continuity reduces working productivity of the electric arc furnace.
Highlights
Total continuity of melting period can be defined by the time of its location under current in the furnace, and time used on auxiliary technological operation, fulfilled while the furnace was switched off ordinarily on the onloading of second or the budding scrap [1,2,3]
This paper investigated continuity of refinery as a measure to improve the efficiency of Electric Arc Furnace
The experiment was conducted at industrial scale whereby the time was varied from 20 to 40 minutes while energy consumption rose from 0.0542 to 0.1103 mWHour/ton and productivity fell from 253.0 to 99.2 ton/Hour .The data were collected from active furnace in Zerepaves Metallurgical plant, Russia and analyzed with software package for accuracy
Summary
Total continuity of melting period can be defined by the time of its location under current in the furnace, and time used on auxiliary technological operation, fulfilled while the furnace was switched off ordinarily on the onloading of second or the budding scrap [1,2,3]. Stop time of furnace on each pot in 100 ton furnace plant in Haisewide was averagely 3 minutes, and interval between smelting conducted with ruminants in the furnace 15-25 ton liquid steel – 9.1 minutes. By the total energy usage of arc, for that it is necessary 0.86MJ/T0 C/ about 0.24KWHour/T0C/ Judging by these data, in 100ton furnaces relative power 750KV.A/ton and oxygen usage 1000m3/Hour when 100%of its assimilation, speed of heating metal in the melting oxidizing period of smelting while using high degree, secondary voltage can attain (12-14)0C/minutes. By increasing temperature from 1550 to 16700C and oxidizing 0.2%of carbon, as it is accepted in energy balance , continuity of melting period can be reduced to 9-10 min, in average up to 15-20 minutes, with consideration of stop-over to furnace to take the specimen of metal and its temperature record [1].
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