silica sand and borax to refine gold
Nov 24, 2009 Gold Refining Processes. Techniques . melting or seperating gold from fused silica ... crush the glass to fine powder and add some borax, soda ash(or washing/baking soda) to thin out the silica and lower the melting point. ... if you added enough crushed glass or sand silica to melt, then crush this to powder in morter,smashing glass flux ... Dont try to add Borax to the melt when its hot. Some people will prefer to use silica sand rather than Borax to thin the flux. If so, you will need pure silica sand sized to 70 mesh. Ive used both and still prefer to use the Borax. NO BUTTON Why didnt I get a