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Gold Prospecting
Do It Yourself (DIY) Projects
seperating brass and lead from 10mm grey gravel
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<blockquote data-quote="iamagoldenoldie2" data-source="post: 358494" data-attributes="member: 8077"><p>Greenhornet</p><p> the melting point of lead is around 330 C and brass around 950 C so we do have a simple solution at hand , take a large plough disc the larger the better so you can spread the contaminated soil on top in thin layer and have a good hot heat source either under or over the top, the lead will melt and run off like a silver stream, but be extremely careful with lead fumes so you my need a fan or extractor to suck the fumes away, the more deadly element is water, it will explode on contact with molten lead , water expands 17000 times it volume, good for steam engines , but not near molten lead, the gravel will need to be buried as it will be contaminated with lead slag ok the brass cases they melt at around 950 C once the lead is removed then perhaps a shaker could b used like the case cleaners marvellous how the cases circulated in the medium perhaps using a large screen table to allow the gravel to fall thru brass cases can also be picked out manually on a screen table</p><p>at all times you should have appropriate protection leather apron and gloves and a full face shield, just in case, no kids around</p><p>my thoughts are open for improvement it all depends on the budget, hot coals in a fire with an old shovel cheap as but slow and effective , then there is the drum lined with fire bricks and lid heat supplied by log burner a mini blast furnace use to melt lead brass and all those aluminium drink cans that would be my choice , hope this helps</p></blockquote><p></p>
[QUOTE="iamagoldenoldie2, post: 358494, member: 8077"] Greenhornet the melting point of lead is around 330 C and brass around 950 C so we do have a simple solution at hand , take a large plough disc the larger the better so you can spread the contaminated soil on top in thin layer and have a good hot heat source either under or over the top, the lead will melt and run off like a silver stream, but be extremely careful with lead fumes so you my need a fan or extractor to suck the fumes away, the more deadly element is water, it will explode on contact with molten lead , water expands 17000 times it volume, good for steam engines , but not near molten lead, the gravel will need to be buried as it will be contaminated with lead slag ok the brass cases they melt at around 950 C once the lead is removed then perhaps a shaker could b used like the case cleaners marvellous how the cases circulated in the medium perhaps using a large screen table to allow the gravel to fall thru brass cases can also be picked out manually on a screen table at all times you should have appropriate protection leather apron and gloves and a full face shield, just in case, no kids around my thoughts are open for improvement it all depends on the budget, hot coals in a fire with an old shovel cheap as but slow and effective , then there is the drum lined with fire bricks and lid heat supplied by log burner a mini blast furnace use to melt lead brass and all those aluminium drink cans that would be my choice , hope this helps [/QUOTE]
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Gold Prospecting
Do It Yourself (DIY) Projects
seperating brass and lead from 10mm grey gravel
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