WIZZARD
Well-known member
This a question about the Rh and the other NM.
I have a ore concentrate that by SCM/EDD indicates there is high percentages of all Nobel Metals. It was milled to minus 1,000, roasted with sodium hydroxide, and soda ash at 1750F for 45 minutes, The objective was to make every thing soluble, this formula makes most metals into oxides and salts. I have treated with ammonium hydroxide and now have a lot of stuff in solution. When adding Sodium borohydride, I'm getting very brown drop. If I let the solution set up for some time 18 hours, without adding any thing, a fine brown drop takes place, thinking the pH goes down with time. I was targeting the silica but it seams I have more metal than I bargained for. By settling over night will all NM precipitate out solution? Should I use sulfuric to get the rhodium first? Can the gold salts and rhodium salts go into solution with ammonium hydroxide?
I'm thinking I should have started a new thread? Sorry if I'm out order?
WIZZARD
I have a ore concentrate that by SCM/EDD indicates there is high percentages of all Nobel Metals. It was milled to minus 1,000, roasted with sodium hydroxide, and soda ash at 1750F for 45 minutes, The objective was to make every thing soluble, this formula makes most metals into oxides and salts. I have treated with ammonium hydroxide and now have a lot of stuff in solution. When adding Sodium borohydride, I'm getting very brown drop. If I let the solution set up for some time 18 hours, without adding any thing, a fine brown drop takes place, thinking the pH goes down with time. I was targeting the silica but it seams I have more metal than I bargained for. By settling over night will all NM precipitate out solution? Should I use sulfuric to get the rhodium first? Can the gold salts and rhodium salts go into solution with ammonium hydroxide?
I'm thinking I should have started a new thread? Sorry if I'm out order?
WIZZARD
