The terms smelting and refining sometimes overlap but whereas smelting is the separation of gold from non-metallic impurities, refining is the separating and purifying of gold from other metals.
info.goldavenue.com/info_site/in_glos/in_glos_smelt.htm... info.goldavenue.com/info_site/in_glos/in_glos_smelt.html
The mighty, rushing wind had fanned the furnace fires to smelting heat, and the coke, and the limestone, and the iron, and the quartz, and the copper, and the gold, and the silver were all a molten sea. ... Forth from its purifying flames will come the church of God, though only a remnant, without spot or wrinkle or any...
csdachurch.tripod.com/spirit.html
Copper smelters also produce by-product gold, which then goes for refining. The terms 'smelting' and 'refining' sometimes overlap. Whereas smelting is the separation of gold from non-metallic impurities, refining is the separating and purifying of gold from other metals.
www.aboutpreciousmetals.com/Mining/Glossary/smelting.ht... www.aboutpreciousmetals.com/Mining/Glossary/smelting.htm
EWfs_HR2262royalty (PDF File)
2 A net smelter royalty allows for the deduction of smelting costs, ... For example, a mine produces pre-smelted (impure) gold worth $800,000. It sells that gold (for; 800K) to a smelter. After purifying the gold, the smelter sells the finished product for; $1,000,000. In this case, the royalty would be 8% x $800,000.
www.earthworksaction.org/pubs/EWfs_HR2262royalty.pdf
Purifying; Purifying Online. Free Shipping on 100,000+ Products!; ... a natural process of purifying, as the ability of a body of water to rid itself of pollutants. ... How is gold refined...
dictionary.reference.com/browse/self-purifying dictionary.reference.com/browse/self-purifying
Getting Gold: A practical treatise for prospectors, miners and students. ... The first is used in alluvial gold and tin workings and in preparing some silver, copper, and other ores for smelting, and consists merely in separating the heavier metals and minerals from their gangues by their greater specific gravity in water.
geology.com/publications/getting-gold/gold-extraction.s... geology.com/publications/getting-gold/gold-extraction.shtml
Metals include copper, nickel, lead, zinc, silver, cobalt, gold, cadmium, etc. Smelting specifically involves heating the ore with a reducing agent such as coke, charcoal or other purifying agents. Primary smelting processes mine ore and concentrates, whereas secondary smelting processes recover scrap...
www.worstpolluted.org/projects_reports/display/61
Gold chloride is then leached out with water, and the gold is precipitated by reduction with ferrous sulfate or solid charcoal. Bromine water is sometimes used instead of chlorine. The gold obtained is then processed into bullion.
www.newton.dep.anl.gov/askasci/gen01/gen01415.htm
   These properties lend themselves to jewelry and the vast majority of our jewelry is set in gold, silver, platinum, or at least something that resembles them. ...    Purifying gold by mixing it with mercury.
www.gemsociety.org/info/j13.htm
B580 HOW TO SMELT GOLD & SILVER Hank Chapman Jr. Everything you need to know about this subject. Proper chemicals, smelting, and safety procedures. Packed with illustrations and vivid pictures. 8 x 10 112 pages.
www.pioneermining.com/03_gold_sep_books.htm www.pioneermining.com/03_gold_sep_books.htm