Furnace guy is here

[Yggdrasil]

Where does this slag come from? you should not be using Lead in your process!

The OP describes this in his next post.

 

[Baghban]

Welcome to this Forum Baghban. I see you have a wonderful rotaory Furnace. but that type of Furnace is normally used as an Oxidising Furnace by the colour
of the out going Flame it is definately bright Orange meaning to much oxygen being used. A reducing flame is usually Blue in colour. Try this by adjusting
an Oxy-acetalyne Torch, you will only be able weld with a Reducing Flame. The same will happen in a Furnace. What you should be using is a Muffel Furnace.
I once processed a 60 ton slag heap from a company that recoverd Silver from the Bearings off Scrap Jet engines. The reducing agent for your Slag will be
powdered Charcoul mixed in will the crushed Slag, then You also have to use a Slag Thinning addetive

we use diesel as fuel and this color is because of we need high temperature. After this we deliver crude lead and take that for oxidizing in cupellation furnace.
But about blue flame I learned the Blue flame is oxidizing because it burns completely


I don't know about muffle furnace, I'll search about it. Thank you.

I once processed a 60 ton slag heap from a company that recoverd Silver from the Bearings off Scrap Jet engines.

Such a great heap to recover
And Exactly I use crushed slag and some additive.

 

[Baghban]

Coke is prosessed Coal, badically pyrolized Coal.
Charcoal is carbonised wood.

Is there any difference between charcoal and coke and coal in this special application? They all have carbon content

 

[Baghban]

We use this furnace for lead and other base metal oxidizing to make silver dor or copper anode

 

[Baghban]

Check out this thread about smelting, it discusses different flame types and properties of different flux blends. The smelting is in the library but you can link it from HERE

I still reading smelting thread. It's my holy book

 

[Yggdrasil]

Is there any difference between charcoal and coke and coal in this special application? They all have carbon content

I do not know for sure, but coke and coal are heavier.

 

[Baghban]

I do not know for sure, but coke and coal are heavier

As we pour carbon by %wt of charge, I think It doesn't make any difference

 

[Yggdrasil]

As we pour carbon by %wt of charge, I think It doesn't make any difference

I think coal and coke are better as they are less likely to blow out.
Maybe they even have higher Carbon content?

 

[HarryLee1506]

Have you thought about using hydrometallurgy to elute gold from slag?