Laboratory Testing & General Mineral Processing Engineering

Laboratory Testing & General Mineral Processing Engineering

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aqua regia on gold ore (1 reply and 1 comment)

g
giom
7 years ago
giom 7 years ago

hi every one please need help on recovery of gold from ore Iam using agua regia on gold ore that Ifound as a grounded powder Its from a very old place .and Ifound refining clay and the gold ore .iam using aqua regia on it and precipate gold with smb as aorange light brown powder.clean it with amounia then water  but cant melt even at or over1200c turn black  slag .Idid it again to make sure i roested the ore and wash it with nitric clean it dryed and used aqua regia on again get same precipate orange light brown powder wont melt either .and i rosted one more time used chlorination on it precipate with smb again same powder clean it with  amounia water same result wont melt please help with any idea .whene I aply the powder on aluminium it make it a gold colour .whane i used nitric wash i know it desolve most of the metals exept gold any idea please thanks

 

F
Siddiquf
7 years ago
Siddiquf 7 years ago
Like

Are you sure it is gold ore? Any lab assay results on the powder?

g
giom
7 years ago

i couldnt get it assayed yet where iam from its hard to find any lab that exactly assayed iam from morocco .but the ore i founded under a house dated before 17 centery it was hiding very carefully and pouderd .the test idid on it show gold .you can see gold specialy after nitric wash and aqua regia what other metal look yellow like 24 k beside gold .smb is vey specific precipitant for gold and the wash idid to it with ammonia to clean all the ipurity ..to get it assayed in europe or us will take me along time and mony iwill try .thats why iwas hoping ican prossesesd my self .iremeber idid more test to it to make sure its no other metal but always same result.thanks alot sir

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