Assignment Help - homework help

  Lead

Lead (Metallurgy):

Ores:

1. Galena PbS
2. Cerrusite PbCO3
3. Anglesite PbSO4
4. Lead ochre PbO

Extraction:

Lead is mostly extracted from the galena ore sulphide. Galena has lead sulphide and small amounts of silver.

1. Concentration:

The ore is concentrated by froth floatation procedure.

2. Smelting in a Reverberatory furnace:

The concentrated ore is roasted in a reverberatory furnace at modest temperature. The temperature of furnace is maintained by regulating the air supply. During roasting, galena is partially oxidized to lead monoxide and partially to lead sulphate.

953_Lead.jpg

                                                                    Figure: A reverberatory furnace

2PbS + 3O2 → 2 PbO + 2SO2
PbS + 2O2 → PbSO4

Therefore in this procedure roasting and smelting are carried out in the similar furnace, at two distinct temperatures. Around 90% of lead is obtained as metal, the rest passes into slag. The Lead is recovered from the slag by heating it with lime and powdered coke.

20_Lead2.jpg

 

Latest technology based Chemistry Online Tutoring Assistance

Tutors, at the www.tutorsglobe.com, take pledge to provide full satisfaction and assurance in P Block elements homework help via online tutoring. Students are getting 100% satisfaction by online tutors across the globe. Here you can get homework help for P Block elements, project ideas and tutorials. We provide email based P Block elements homework help. You can join us to ask queries 24x7 with live, experienced and qualified online tutors specialized in P Block elements. Through Online Tutoring, you would be able to complete your homework or assignments at your home. Tutors at the TutorsGlobe are committed to provide the best quality online tutoring assistance for Inorganic-Chemistry Homework Help and assignment help services. They use their experience, as they have solved thousands of the Chemistry assignments, which may help you to solve your complex issues of P Block elements. TutorsGlobe assure for the best quality compliance to your homework. Compromise with quality is not in our dictionary. If we feel that we are not able to provide the homework help as per the deadline or given instruction by the student, we refund the money of the student without any delay.
Home | Company Overview | Services | Discover Q&A | Sitemap | Contact Us | T & C | Refund Policy | Copyright Policy | Blog | Q&A | Directory

©TutorsGlobe All rights reserved 2022-2023.