WESTWARD EXPANSION INDUSTRIALIZATION URBANIZATION 1870 1900
SECOND INDUSTRIAL REVOLUTION
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A patent.
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A monopoly.
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The process of puddling.
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An ideology.
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Detailed explanation-1: -puddling process, Method of converting pig iron into wrought iron by subjecting it to heat and frequent stirring in a furnace in the presence of oxidizing substances (see oxidation-reduction).
Detailed explanation-2: -The open-hearth furnace (OHF) uses the heat of combustion of gaseous or liquid fuels to convert a charge of scrap and liquid blast-furnace iron to liquid steel. The high flame temperature required for melting is obtained by preheating the combustion air and, sometimes, the fuel gas.
Detailed explanation-3: -The Bessemer process was the first inexpensive industrial process for the mass production of steel from molten pig iron before the development of the open hearth furnace. The key principle is removal of impurities from the iron by oxidation with air being blown through the molten iron.
Detailed explanation-4: -Puddling process is the process in which hot air is blasted and stirred well. This removes CO2, SO2 and slag. It is used to refine cast iron to produce wrought iron.