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The supply of equipment includes three 160 tonne per hour capacity boilers that use multiple fuels – blast furnace and coke oven gas from the steel process and light diesel oil – and two 40 MW each steam turbines. Steam from the boilers will be used to blow air into the blast furnace and to generate 80 MW power. [18]
Blast furnaces differ from bloomeries and reverberatory furnaces in that in a blast furnace, flue gas is in direct contact with the ore and iron, allowing carbon monoxide to diffuse into the ore and reduce the iron oxide. The blast furnace operates as a countercurrent exchange process whereas a bloomery does not.
Conventional blast furnaces used for smelting iron ore use a hot blast. Water jacket furnaces most commonly used a cold air blast, typically provided by a positive-displacement blower, such as a Roots blower. Preheating of the air blast was used on some water jacket furnaces, but preheating of the blast had no advantage when the furnace was ...
NMDC set up a 3 MTPA capacity greenfield Nagarnar Steel Plant based on HiSmelt technology, 16 km from Jagdalpur in Chhattisgarh state, with an estimated outlay of Rs 20000 crore. [7] [5] A pure-play miner, NMDC had in 2009–10 conceived the Nagarnar steel plant with the intention of moving up the value chain and diversifying its portfolio.
Here’s what you need to know about the company that may buy up US Steel two blast furnaces.
The blast furnace method is expected to survive into the 22nd century because of its efficient rate of iron production at competitive costs compared with other iron-making methods. Blast furnaces keep on improving with adaptations arising from new technologies driven by rising global demand, yet the main chemical process remains the same. But ...
Blast furnaces operate at temperatures above the melting point of iron and make molten pig iron, with molten slag as the waste product. In the 19th century, furnaces used either hot-blast technology—like modern blast furnaces, in which the blast air is preheated to a high temperature—or the older cold-blast technology.
A metallurgical furnace, often simply referred to as a furnace when the context is known, is an industrial furnace used to heat, melt, or otherwise process metals. Furnaces have been a central piece of equipment throughout the history of metallurgy ; processing metals with heat is even its own engineering specialty known as pyrometallurgy .