duke1025
Member
- Joined
- Aug 27, 2020
- Messages
- 19
Making high purity TIN.
hi, i'm new here... my first post...
had no Tin, could not get any around me, so i opted for solder.. but worked on how to purify it.
I used "electrolysis" cut up solder in small pieces that says "lead free" and sometimes "silver solder lead free" (it's plumbing solder), these solders contain around 90%+ tin, <10% copper or other, and less then <2% silver.
solution: HCI in a beaker half full, and put the solder pieces into the beaker less then half full, then put that on low heat outside on a portable stove (S.S. pan filled half w/ sand).. repeat low heat... beaker has glass plate on top...(slowly-very little bubbles) let it bubble and slowly disintegrate the solder, once in awhile mix things around gently (glass rod)... over 12-14 hours or so... until it is all muck or sludge... remove the HCI liquid containing the tin (filter liquid) to prepare for the electrolysis, get rid of the rest (sludge solids)...
electrolysis: i made 2 small electrodes from stainless steel (bent on top for beaker), they reach half way down the beaker... and connected 3-9vdc to it...less then 1 amp (you want slow -more pure crystals). pour in HCI-tin mix into beaker... use a magnifier....right away you will see pure tin crystals growing, but you have to keep an eye on it or the crystals will form a short connection (adjust electrode space as required)... (when there is a large amount of tin on the electrode) remove the negative anode with the crystals, and scrap them off with another stainless steel piece into a separate beaker or container... then put the electrode back into solution and repeat until you have as much tin as you require. this is high purity tin. good luck!
P.S. i believe that higher purity tests will lead to better tests and higher accuracy. perhaps even less denigration over time since most stannous chloride seems to do. time will tell how this experiment goes.
hi, i'm new here... my first post...
had no Tin, could not get any around me, so i opted for solder.. but worked on how to purify it.
I used "electrolysis" cut up solder in small pieces that says "lead free" and sometimes "silver solder lead free" (it's plumbing solder), these solders contain around 90%+ tin, <10% copper or other, and less then <2% silver.
solution: HCI in a beaker half full, and put the solder pieces into the beaker less then half full, then put that on low heat outside on a portable stove (S.S. pan filled half w/ sand).. repeat low heat... beaker has glass plate on top...(slowly-very little bubbles) let it bubble and slowly disintegrate the solder, once in awhile mix things around gently (glass rod)... over 12-14 hours or so... until it is all muck or sludge... remove the HCI liquid containing the tin (filter liquid) to prepare for the electrolysis, get rid of the rest (sludge solids)...
electrolysis: i made 2 small electrodes from stainless steel (bent on top for beaker), they reach half way down the beaker... and connected 3-9vdc to it...less then 1 amp (you want slow -more pure crystals). pour in HCI-tin mix into beaker... use a magnifier....right away you will see pure tin crystals growing, but you have to keep an eye on it or the crystals will form a short connection (adjust electrode space as required)... (when there is a large amount of tin on the electrode) remove the negative anode with the crystals, and scrap them off with another stainless steel piece into a separate beaker or container... then put the electrode back into solution and repeat until you have as much tin as you require. this is high purity tin. good luck!
P.S. i believe that higher purity tests will lead to better tests and higher accuracy. perhaps even less denigration over time since most stannous chloride seems to do. time will tell how this experiment goes.