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Direct reduced iron (DRI), also called sponge iron, is produced from the direct reduction of iron ore (in the form of lumps, pellets, or fines) to iron by a reducing gas or elemental carbon produced from natural gas or coal. Many ores are suitable for direct reduction.Chat Online
DOE has determined that energy efficiency standards for residential non-weatherized and weatherized gas furnaces, mobile home gas furnaces, oil-fired furnaces,Chat Online
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1 Annual Fuel Utilization Efficiency, as determined in section 10 CFR 430.23(n)(2). The AFUE of residential furnaces shall not be less than the following starting …Chat Online
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29/3/2010· When you receive your natural gas bill, it most likely will not use Btu as a unit of measurement. Instead, natural gas may be priced as dollars per therm. One therm is equal to 100,000 Btu or 0.10 MMBtu, while 100 cubic feet of natural gas equals 103,700 Btu or 1Chat Online