Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Copper And Its Production
Copper is marked via a host of good engineering properties. The foremost is copper's good electrical conductivity and bulk of copper is utilized as electrical conductor. This also has a high thermal conductivity and coupled along with its resistance to corrosion this is largely employed as heat exchanger tubes particularly beneath circumstances while corrosive atmosphere exists. Its fabrication ease and medium tensile strength are added advantages in its industrial application.
Copper is removed from its sulfide ore. That ores also comprise sulfides of iron. Low grade ore is transformed in sulfide concentrate that is smelted in reverberatory furnace to generate a mixture of sulfides of copper and iron, called mate. The level is separated from matte. The copper sulfides are then chemically transformed in impure or blister copper of 98 percent purity, via blowing air via the matte. The iron sulfides is oxidized and converted in slag. The blister copper is after that transferred to refining furnace where main impurities are transformed in slag and removed. Such fire refined cooper is termed as tough pitch copper and is then refined electrolytically to produce 99.95 percent pure copper termed as electrolytic tough pitch or ETP copper.
Electrolytic tough pitch copper is utilized for production of strip, rod plate and wire. Such products offer several industrial reasons. But electrolytic tough pitch copper contains 0.04% oxygen that forms interdendritic Cu2O while copper is cast. If copper is heated to a temperature of 400oC in the atmosphere of hydrogen, then hydrogen reacts along with densritic Cu2O and generates steam. Such H2O molecules being large in size do not diffuse readily and cluster around grain boundaries hence causing internal holes. This phenomenon is known as hydrogen embrittlement. The methods of refusing hydrogen embrittlement are adding phosphorous in the alloy copper and hence allowing P2O5 to form. The alternative method is to cast electrolytic tough pitch copper under a controlled reducing atmosphere to produce copper that is oxygen free high conductivity or OFHC copper.
Following sets of the three forces act on a body,. In which case resultant cannot be zero? 1) 10N, 10N, 10N 2)10N, 10N, 20N 3)10N, 20N, 20N 4010N, 20N, 40N Ans) In 4th
(Hydrostatic pressure on curved 3-D surfaces) A shark tank in the aquarium has a hemispherical glass viewing "bubble" jutting into the water from the side wall. The radius of
briefly
Homogeneous and isotropic material: A homogeneous material implies that elastic properties like modulus of elasticity and Poisson's ratio of material are same everywhere in
Q. Design Ventilation Systems for plant? While some natural ventilation may sometimes be used, a pressurized HVAC (heating, ventilation and air-conditioning) system is more typ
casting is better than steel
what is steam trap?
First law of thermodynamics: The First Law of Thermodynamics states that work and heat are equally convertible. The present tendency is to include all the forms of energy. The
Q. What do you understand by Binders? Binders used in a foundry are : Inorganic and organic binders. Organic binders used for core making and will be discussed later. Clay b
how to solve t -section with udl
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd