Westerngs said:To all,
I am thinking that Franciz here is going to have to use a metal collector. If the assay is accurate it totals <0.3%. When you melt pure silver you expect slag losses of about 0.5% or so.
I would suggest copper.
Alternately, Franciz, you can melt, pour off about 80% of melt so you don't pour off metals at bottom of the crucible, add new material/flux mixture and repeat many times. Eventually you will collect enough metal at the bottom of the crucible to pour into a mold and recover.
I think the reason the metals don't collect is that there are not enough to collect.
Westerngs said:I meant to say that your assay from inspectorate shows about 0.23% total metals, copper, silver and gold. That is just not very much and will be hard to collect by melting.
If you take say pure silver, and melt it using flux, it is expected that you will not recover 100% of the silver after melting. You will lose about 0.5% of the initial weight to the slag.
4metals said:Generally with a solid powder you are correct and a collector is needed, but this material was simply borax. The borax will remelt and mix with the newly added borax and soad ash and be thinned by the fluorspar to the point where the metals will drop through the very thin liquid.
I have melted both sweeps requiring a collector and sweeps made of just old crushed slag, the slag always warrants an attempt to recover the values by thinning and it usually is effective.
Please note that the slag resulting from the thinning may still contain payable values if it is further processed into a powder, but then again so will the resulting slags from a process using a collector.
4metals said:First the soda ash was too expensive,
Then the fluorspar,
Now the borax.
You've been melting with just borax for 15 years and now its too expensive.
You have been given some good suggestions here both with thinning and with using a copper collector. I think its time you do some work at the furnace.
Last i have use a hammer to break my crucible to collect the lead below. I dissolve it in nitric acid and i use salt to test if there is silver, i have recover 3grams++ of silver in my 50grams used borax that i try to smelt today i have jump and shout out loud as i am so happy but there is still lot of many small bead in the borax'' Million very small white bead''
Harold_V said:It's clear to me that Franciz is seeking a method of recovery that involves no cost.
Dear all,
Can i don't add new borax and do it in another way?
New Borax cost USD1000/- per M/T
Fluorite Cost USD200/- per M/T
Soda Ash Cost USD550/- per M/T
I will lose money or no profit if i do it this way.
Can i replace new borax with silica sand?
Thanks and best regs....
Franciz....
Do you think i am seeking a method of recovery that involves no cost?
For me, It is a question and not seeking for magic answer.
If you know any Magic answer please share it here....
Thanks and kind regs..
Franciz...
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