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How the open hearth process became obsolete?
Because of small termal efficiency, high prices of oil, long duration of process,.... Today steel is mainly made by electric arc furnace and by converters. Converters use only oxygen for refining blast furnace iron. Electric arc furnaces can melt scrap steel much faster than in the old open hearth furnaces. Much of disadvantages of open hearth furnaces are solved in electric arc furnaces and converters. Open hearth furnaces can't melt high quality alloy steels, but they can melt very good quality construction steels. They are still in use by Russians about 30% and Ukrainians 50% and other former soviet countries. The open hearth furnaces was more then a century the symbol of a steel making.
What are the disadvantage of open hearth process?
It took a long time
What are the release dates for The Phantom of the Open Hearth - 1976 TV?
The Phantom of the Open Hearth - 1976 TV was released on: USA: 23 December 1976
What is twin hearth furnace?
Russian Designed, Twin Hearth Furnaces are the modernized version of the Older Open Hearth Furnaces which now comprise two adjoining furnaces side by side to alternately use up the sensible heat of the gases generated due to the steel making process being carried out in one furnace to heat up the scrap and other materials in the other furnace till the first one is tapped and then the entire process is repeated for the next heat that is to be carried out in the first furnace utilizing the sensible heat of the second furnace. This cycle is alternated and the result is to cut on time of production and minimizing heating up costs. In India these types of furnaces are still being used at State Owned Steel Authority Of India Limited's Bhilai Steel Plant and IISCO Steel Plant. They are followed by Ingot casting route and the Blooming and Billet milling plant.
What is fire sand?
Fire or furnace sand is generally coarser than the sand used in metal molding. It is used in building floors for acid open-hearth furnaces and in lining the cupolas and ladles that contain molten metal in the foundry industries.
Where would you find a cauldron?
In an open hearth kitchen
What are the release dates for Visions - 1976 The Phantom of the Open Hearth 1-10?
Visions - 1976 The Phantom of the Open Hearth 1-10 was released on: USA: 23 December 1976
What re plants that start with o?
Open Hearth day lily
Where can a 15-year old boy get a job in Wauwatosa Wisconsin?
open hearth
What does fender mean in British slang?
The hearth of an open fire is called a fender
In what year did a stove replace the open-hearth fireplace in the white house?
It was in 1801
What was the name of the furnace invented by Pierre Martin and Werner Siemens?
The open hearth furnace.
