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Transcript of LEAD
In the Floatation Process it will separate the lead and valuable minerals and sulphides from the tailings.
Ground ore and special chemicals are mixed constantly in the floatation banks, air is blowed through the mixture and the fine lead sulphide particles stick to bubbles which rise to form froth.
The Tailings are discarded.
Then the froth which could only contain 5% lead is dried, during this process that 5% turns into 50%
What is Lead
Lead is a heavy metal that is hazardous if breathed or swallowed, It's used in things such as Gasoline and Paints.
How is Lead Obtained?
Most of Australian's lead mines are underground.
Firstly the ore get drilled and blasted and transferred to underground rock crushers.
Secondly The Ore is transported to the directly to the surface by truck via a spiral access tunnel.
By Thomas Miller and Liam Weir
Then ore has additional fine grinding and crushing. This happens so that it makes future steps easier.
Then the lead is partly melted to combine
the fine particles into lumps and then to remove some sulphur.
The sintered product is then melted in a blast furnace to produce Impure lead, 97% Pb
The lead is then cooled in stages but remained molten to seperate copper and Impurities. the lead is then made into lead bullions.
Purifying the lead/ bullion involves remelting then blowing the molten lead to form a slag layer which contains some lead, arsenic and antimony.
Then silver, gold or any trace of copper is removed which then makes it 99.9% pure lead.
Which then gets casts into blocks for use of the manufacturing industry.
Gets drilled and blasted
Transported to surface
Additional grinding and Crushing
Cooled, Remelted, gets particles that aren't necessary extracted.
99.9% Pure lead