Non-Chemical Can I use this nozzle for making burner

[saadat68]

Hi
I want to make a 1 kg furnace for melting silver. I can find this nozzle from shop but I think it is small. Isn't it ?
Can I use it in making a burner/torch for my furnace?
If it is small can I make its hole larger with a drill ? Is it safe ?

Hole diameter: 2.5 mm
Length of nozzle: 6 cm

 

[Shark]

The orifice size (the hole) in mine was drilled with a 3/64 bit. That is 1.1906 mm or 0.0469 inch. From my recent adventures in building burners I would think that 3mm would be way to big for a furnace that small.

 

[saadat68]

The orifice size (the hole) in mine was drilled with a 3/64 bit. That is 1.1906 mm or 0.0469 inch. From my recent adventures in building burners I would think that 3mm would be way to big for a furnace that small.

Thanks
I thought it is small!
Also diameter is 2.5 mm not 3 mm

Can i use this nozzle ? is it safe ?

 

[Barren Realms 007]

The orifice size (the hole) in mine was drilled with a 3/64 bit. That is 1.1906 mm or 0.0469 inch. From my recent adventures in building burners I would think that 3mm would be way to big for a furnace that small.

Thanks
I thought it is small!
Also diameter is 2.5 mm not 3 mm

Can i use this nozzle ? is it safe ?

It depends on what kind of fuel you are using for your furnace. Propane, natural gas, waste oil. More information would be needed to properly answer your question. What pressure your fuel can be delivered at also makes a difference. Propane generally runs at a higher pressure than natural gas unless you have asked for a higher natural gas pressure regulated line installed at your location by the supplier.

 

[Shark]

Based on my personal experience I would not use it. 1mm to 1.2mm would be my stopping point as for the hole size. It may work under other conditions, I just haven't reached that level of experience. Also, knowing what type burner you plan on using will make a lot of difference. What type furnace do want to use it in? Do you plan on using forced air? There are many things that can determine the orifice size in a burner. I recently built several, until I found the one that made me happy. All of them used a 3/64" hole. (1.2mm) Even then I think that might be to big of a hole for most of the home built furnaces I have looked into.

 

[saadat68]

The orifice size (the hole) in mine was drilled with a 3/64 bit. That is 1.1906 mm or 0.0469 inch. From my recent adventures in building burners I would think that 3mm would be way to big for a furnace that small.

Thanks
I thought it is small!
Also diameter is 2.5 mm not 3 mm

Can i use this nozzle ? is it safe ?

It depends on what kind of fuel you are using for your furnace. Propane, natural gas, waste oil. More information would be needed to properly answer your question. What pressure your fuel can be delivered at also makes a difference. Propane generally runs at a higher pressure than natural gas unless you have asked for a higher natural gas pressure regulated line installed at your location by the supplier.

Based on my personal experience I would not use it. 1mm to 1.2mm would be my stopping point as for the hole size. It may work under other conditions, I just haven't reached that level of experience. Also, knowing what type burner you plan on using will make a lot of difference. What type furnace do want to use it in? Do you plan on using forced air? There are many things that can determine the orifice size in a burner. I recently built several, until I found the one that made me happy. All of them used a 3/64" hole. (1.2mm) Even then I think that might be to big of a hole for most of the home built furnaces I have looked into.

I want to use natural gas with a air blower :?:
A furnace like this
https://i.ytimg.com/vi/2bTesd75Wic/maxresdefault.jpg

 

[Shark]

I want to use natural gas with a blower :?:

That is more than my knowledge and ability allows for. :|

I have never used natural gas in my furnace. I can't even get natural gas where I live yet.

 

[saadat68]

What problems do I have if use this nozzle? Is there any safety issue ?

 

[Barren Realms 007]

What problems do I have if use this nozzle? Is there any safety issue ?

Natural gas runs at a lower pressure than propane. You would need to supply the BTU's required to reach the temperature you are wanting to operate at to determine the orifice size required.

 

[butcher]

The hole can be brazed closed and re-drilled.
For a coffee can furnace I would just get a Mapp gas torch or a couple of cheap propane torches.

A forced air and natural gas burner (unless extremely small would possibly melt the whole coffee can furnace, of that construction pictured in the link above.

Have you looked into the small soft fire brick furnaces (like Lazer Steve made?), that uses a small torch and a melting dish.

Natural gas and forced air I would use on a larger furnace of better construction but not on a coffee can.

You can make burners of several different sizes or even gang up with several burners, but on something that small I just figure a store bought or second-hand torch is just better (than making the burner).

 

[saadat68]

The hole can be brazed closed and re-drilled.
For a coffee can furnace I would just get a Mapp gas torch or a couple of cheap propane torches.

A forced air and natural gas burner (unless extremely small would possibly melt the whole coffee can furnace, of that construction pictured in the link above.

Have you looked into the small soft fire brick furnaces (like Lazer Steve made?), that uses a small torch and a melting dish.

Natural gas and forced air I would use on a larger furnace of better construction but not on a coffee can.

You can make burners of several different sizes or even gang up with several burners, but on something that small I just figure a store bought or second-hand torch is just better (than making the burner).

I can not find a good torch in my city from shops and also can not buy it from amazon and ebay! So I have to make it
My furnace that I want to make is larger than a can

 

[Justincase]

The hole can be brazed closed and re-drilled.
For a coffee can furnace I would just get a Mapp gas torch or a couple of cheap propane torches.

A forced air and natural gas burner (unless extremely small would possibly melt the whole coffee can furnace, of that construction pictured in the link above.

Have you looked into the small soft fire brick furnaces (like Lazer Steve made?), that uses a small torch and a melting dish.

Natural gas and forced air I would use on a larger furnace of better construction but not on a coffee can.

You can make burners of several different sizes or even gang up with several burners, but on something that small I just figure a store bought or second-hand torch is just better (than making the burner).

I can not find a good torch in my city from shops and also can not buy it from amazon and ebay! So I have to make it
My furnace that I want to make is larger than a can

I could send you a torch if you wanted I just happen to have several more than I need.
Can you get compressed O2?
Trying to do small amount in a furnace is very waste full. probably recoup your investment quite quickly if you have any turnover.
https://www.worldwide-parcelservices.co.uk/parcel-to-iran

 

[saadat68]

The hole can be brazed closed and re-drilled.
For a coffee can furnace I would just get a Mapp gas torch or a couple of cheap propane torches.

A forced air and natural gas burner (unless extremely small would possibly melt the whole coffee can furnace, of that construction pictured in the link above.

Have you looked into the small soft fire brick furnaces (like Lazer Steve made?), that uses a small torch and a melting dish.

Natural gas and forced air I would use on a larger furnace of better construction but not on a coffee can.

You can make burners of several different sizes or even gang up with several burners, but on something that small I just figure a store bought or second-hand torch is just better (than making the burner).

I can not find a good torch in my city from shops and also can not buy it from amazon and ebay! So I have to make it
My furnace that I want to make is larger than a can

I could send you a torch if you wanted I just happen to have several more than I need.
Can you get compressed O2?
Trying to do small amount in a furnace is very waste full. probably recoup your investment quite quickly if you have any turnover.
https://www.worldwide-parcelservices.co.uk/parcel-to-iran

Thank you. If you send it for me I will get it 2 month later with high costs
If I know what orifice size needed I can make it and it easier and cheaper for me

I could find these torches but can not connect with steel pipe. just gas hose and it is a problem
http://uupload.ir/files/w4p3_5441.jpg

 

[Justincase]

Shipment's should get to Tehran or Ahar with in four to eight days, once in country the local dispersion may be a little spotty.
But any thing less than 20-30g is a pain to do in the furnace, a good torch will save you hours of sitting around waiting for things to heat up.
I have found a good old cutting torch to be quite indispensable.
Great for there intended use as well as for melting P.M's

 

[saadat68]

Shipment's should get to Tehran or Ahar with in four to eight days, once in country the local dispersion may be a little spotty.
But any thing less than 20-30g is a pain to do in the furnace, a good torch will save you hours of sitting around waiting for things to heat up.
I have found a good old cutting torch to be quite indispensable.
Great for there intended use as well as for melting P.M's

Thanks I don't forget your kindness but there are many problems like customs
There are some persons in Iran that can buy from amazon and ship to Iran and then my city. It can be last choice

If somebody say me what orifice needed for a small furnace (1 kg or 2 kg ) and a small blower like hairdryer I can make my own furnace. Tomorrow I will go to shop and change my nozzle to 1 mm diameter

 

[Justincase]

http://www.backyardmetalcasting.com/blowburner01.html
As you are using methane instead of propane the size of your hole will not be quite so critical.
You should install a variable valve which will let you tune you burner by eye in any case.
The hole size is critical when you are depending on the Venturi effect to bring air flow into the burner, as you are forcing air into the combustion tube that is not really a concern.

 

[saadat68]

http://www.backyardmetalcasting.com/blowburner01.html
As you are using methane instead of propane the size of your hole will not be quite so critical.
You should install a variable valve which will let you tune you burner by eye in any case.
The hole size is critical when you are depending on the Venturi effect to bring air flow into the burner, as you are forcing air into the combustion tube that is not really a concern.

Understood
Thanks
So I use this nozzle and make my burner

 

[butcher]

This small propane burner is simple to make and works well in a small forge, you can also use two burners in a larger forge if needed.
http://www.backyardmetalcasting.com/oliverburner1.html

 

[saadat68]

OK
I found 1 mm nozzle but there is another problem :?

I don't think this blower can to pass air from 1 mm hole ? So what can I do ?
http://4.imimg.com/data4/TI/YR/MY-2087271/electric-air-blower-250x250.jpg

 

[butcher]

Maybe I just do not understand the problem, why would you want to try to pass air through the fuel orifice?