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chemical engineering chemical process
1. __________ is used as a flux in the extraction of iron from iron ore (hametite) in blast furnace.
(A): Bauxite
(B): Limestone
(C): Manganese
(D): Quartz
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QA->The iron obtained direct from the blast furnace is called?....
QA->The method of concentrating the ore which makes use of the difference in density between ore and impurities is called?....
QA->The inventor of the Steel Furnace is?....
QA->Kudremukh hills known for iron ore deposits is situated in which place?....
QA->Which port caters to the export of Kudremukh iron ore?....
MCQ->__________ is used as a flux in the extraction of iron from iron ore (hametite) in blast furnace.....
MCQ->The blast furnace gas is a by-product in the production of pig iron in the blast furnace.....
MCQ->The simplest method of welding two pieces of metal together is known as pressure welding.The ends of a metal are heated to a white heat-for iron,the welding temperature should be about 1300C-in a flame.At this temperature the metal becomes plastic.The ends are pressed or hammered together,and the joint is smoothed off.Care must be taken to ensure that surfaces are thoroughly clean first,for dirt will weaken the weld.Moreover,the heating of iron or steel to a high temperature cause oxidation,and a film of oxide is added to the heated surfaces.For this reason,flux is applied to the heated metal.At welding heat,flux melts and the oxide particles are dissolved in it together with any other impurities which may be present.The metal surfaces are pressed together,and the flux is squeezed out from the center of the weld.A number of different types of weld may be used,but for fairly thick bars of metals,a vee-shaped belt should be normally employed.It is rather stronger than ordinary butt weld. The simplest way of welding two pieces of metal together is....
MCQ->Which of the following is capable of acting both as an acid flux as well as a basic flux in the metal extraction from its ore ?....
MCQ->Explosion limit of blast furnace gas is 37 to 71% gas in gas-air mixture. It means that the blast furnace gas will explode when burnt in a confined space, if its concentration in the gas-air mixture is __________ percent.....
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