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Techniques for CollectorsHow to seperate lead ore from red earth

19th Dec 2007 08:43 UTCutheinlwin

Hello,

I would like to seperate lead ore ( size ranging from 2" to 12" from red earth (Terrarosa soil that weathered from limestone ) in limestone area where water problem for washing the ore. We need some machine (eg. air seperator or electric seperator) which want to operate >500 tons daily to separate lead ore from red soil. Any suitable process or advise urgently,Please.

20th Dec 2007 21:31 UTCNH

What kind of minerals are in this lead ore? Galena (and most other lead minerals) are a lot denser than most soils. This, combined with the large size of the lead ore pieces should make air separation possible.


But if your lead ore is in pieces of 2-12 inches, and the soil is presumably finer than this, is there any reason that you can't just use a sieve, agitated by an electric motor? You would probably need several such setups to get >500 tons of soil processed per day.


I am assuming that your lead ore is in fairly pure chunks, but if (for example) it consists of small crystals on a matrix of red earth or limestone, these processes might not work.

20th Dec 2007 22:17 UTCJeremy Zolan

Where is the ore from and what is the nature of the deposit producing it?

2nd Jan 2008 03:23 UTCutheinlwin

Hello,

Thanks for the message. The ore is mainly cerussite forms as secondary ore in residual red soil, 2m to > 50m thick underlain by limestone with galena mineralization. Main target is to separate Pb Co3 ore from the red soil which is not very compact. Using shaking table/ seiveing is a good idea but worry about the mass production eg. 500 tons/ day.

9th Jan 2008 00:48 UTCPaolo Malesci

A more efficient method would be to use as riddle a rotating large pipe with holes of less than 2" on the surface and collect the ore at the end of pipe.

The movement of the ore in the pipe may be by gravity (inclination of the pipe) or mechanical (helicoidal flange inside the pipe).
 
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