prats said:i have a 200 gms of silver chloride dry cake containing some pecious metal, can i melt it. if yes how
thanks
Juan Manuel Arcos Frank said:Prats:
You can convert your AgCl to metallic silver melting it with some sodium carbonate:
Weight silver chloride,add half of this weight of sodium carbonate,I mean,If you have 200 gr then add 100 gr of sodium carbonate,mix well the powders,put them onto a crucible and fire the torch with the medium flame,point out the torch to the powder and you will see that a green/grey crust is formed on the top,brake the crust and mix it with the powder.When all the powder is converted to crust rise temperature to 1100C,you will get nice and shining metallic silver.
Regards.
Manuel
Thanksbutcher said:Iron in the melt will oxidize to a sulfide, reducing silver in the melt.
Iron will reduce the silver salt (silver sulfide) to silver metal, the iron will oxidize to a salt of iron sulfides (oxidized iron and other metal oxides into slag glass formed with the flux).
Here the soda ash (sodium carbonate) would only try to reduce the iron, and remove oxides, either from metals or atmosphere of the melt...
The soda ash in the flux would also help in the slag forming of glass with the glass formers in the flux (crushed glass, borax, quartz...), it can be somewhat harsh on crucibles (if the flux is not balanced) fluxes can be oxidizing or reducing. I may be getting off subject somewhat.
Nails in the melt, silver will not alloy with iron or its salts or oxides.
Enter your email address to join: