What do you do with your coal dust ?

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What do you do with your coal dust ?

Post  LiveSteam on Sat 16 Apr 2016, 7:38 am

I'm sure all the 4" and 6" folks must have this ..........coal dust......you know its the stuff in the bottom of the bag or your bunker, what do you do with it scratch

Cos I'm a bit of a hoarder I've collected this stuff and over the past couple of years now have a considerable pile of it, it ranges from bits that would be ok for say a small 2" down to just pure dust, I've spoken to a few others about what they do with and they just bin it Neutral

Now this seems a bit of shame and a waste, surely there has to be a better use for it, I try and use the tiny lumps but the dust is really just pointless not too mention a pain to even put in the engine, also theres the issue that the dust almost flash burns which after one spoonfull I was not keen on as the temperature increase for those few seconds must be tremendous and is going to stress the boiler/tubes.

So what to do with it scratch  has anyone thought if it would be possible to say stick it back together using a large hydraulic press and make some nice mini chunks which would be useful for say starting the engine, would that work ? dunno ?

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Re: What do you do with your coal dust ?

Post  Kiwiconnection on Sat 16 Apr 2016, 3:18 pm

Just a thought.... Be very careful if you have a large quantity of coal dust, it can be as flammable and explosive as petrol fumes if disturbed near a source of ignition. And like a lot of minerals it can also self generate heat to a point of ignition. As you said in your post it flashes off very vigorously when ignited by introducing it into an existing fire. Shocked

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Re: What to do with coal dust

Post  chas12154 on Sun 17 Apr 2016, 11:16 am

Hi, you could always burn it in your engine! The dust, can be, laid on a fire, once it has been burning for a while.
A little at a time, can keep the fire burning, without having to keep putting lumps on.
I have much experience with the full size engines, that is what I used to do with the dust. While you are just sitting, with the motion turning, it was ok and when you need more heat, just open the damper and put some lumps on.
Seems a shame to waste it, after all, you have paid for it!
I don't know if that is any help.

Charlie

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Re: What do you do with your coal dust ?

Post  LiveSteam on Sun 17 Apr 2016, 12:08 pm

Kiwiconnection wrote:Just a thought.... Be very careful if you have a large quantity of coal dust, it can be as flammable and explosive as petrol fumes if disturbed near a source of ignition. And like a lot of minerals it can also self generate heat to a point of ignition. As you said in your post it flashes off very vigorously when ignited by introducing it into an existing fire. Shocked

Oh fully aware of its highly explosive nature, at the end of the day flour will do the same.


chas12154 wrote:Hi, you could always burn it in your engine! The dust, can be, laid on a fire, once it has been burning for a while.
A little at a time, can keep the fire burning, without having to keep putting lumps on.
I have much experience with the full size engines, that is what I used to do with the dust. While you are just sitting, with the motion turning, it was ok and when you need more heat, just open the damper and put some lumps on.
Seems a shame to waste it, after all, you have paid for it!
I don't know if that is any help.

Charlie

Have tried it a couple of times with small amounts as I mentioned, not much more than a table spoon I'd say and found it flash burns so quickly I wasnt happy with the potential quick temperature rise that must be going on in the firebox, maybe a table spoon is too much in a 4" when compared to scaling it to a full size ? mind you its going to take a while for me to get through the 30kg or more of the stuff I have currently if I use even less than a table spoon Laughing

mmmmm further research required...........

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Re: What do you do with your coal dust ?

Post  lynnr on Sun 17 Apr 2016, 12:13 pm

Like at Dundee this last two days. A lazy fire, damper closed and just sitting simmering. Half a shovel with a couple lumps on top in. No flash up or excessive fire and soon got rid of a goodly quantity of dross and dust. 

Also often shovel what's in the coal box with the coal with no problem.

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Re: What do you do with your coal dust ?

Post  Irish Burrell on Sun 17 Apr 2016, 12:36 pm

On the full size I'm affiliated with we just throw it all in on a good fire not much of a temperature change then, it can be handy sometimes with lighting up as well.

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Re: What do you do with your coal dust ?

Post  LiveSteam on Sun 17 Apr 2016, 1:25 pm

lynnr wrote:Like at Dundee this last two days. A lazy fire, damper closed and just sitting simmering. Half a shovel with a couple lumps on top in. No flash up or excessive fire and soon got rid of a goodly quantity of dross and dust. 

Also often shovel what's in the coal box with the coal with no problem.

You've made me think now, my damper is pretty much useless as I've got an early MW ash pan with the monster door thingy in the bottom of it, which of course is so heat distorted that really the pans only use is to hold the grate in Laughing which does mean I have to be somewhat careful when firing as it does easily run away, this must be why even a small amount of dust just seems to flash burn due to the draw.

mmmmm next winters job sort the ash out and then burn me dust Laughing

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Re:What to do with coal dust.

Post  chas12154 on Sun 17 Apr 2016, 11:02 pm

You need a good fitting damper and ashpan. The air flow needs tobe very little with dust, we used to keep the damper closed when adding coal dust. As stated, its very explosive and flare up on applying to fire.
Its just a thing of giving it a go, trying different damper settings, till you get it right.

No two engines will react the same, just as in full sized engines, they all have their ways.

Charlie

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Re: What do you do with your coal dust ?

Post  Weston on Mon 18 Apr 2016, 6:45 am

Mix with cement, add some water and fill old toilet roll tubes, make your own mini briquettes.... These can then be used on any fire you wish, avoids the explosive nature of coal dust this way.


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Re: What do you do with your coal dust ?

Post  LiveSteam on Mon 18 Apr 2016, 1:23 pm

chas12154 wrote:You need a good fitting damper and ashpan.

Laughing Laughing Laughing well that puts my ash pan out of the running then Laughing Laughing Laughing I'll have to take a photo of the poor thing Embarassed


Weston wrote:Mix with cement, add some water and fill old toilet roll tubes, make your own mini briquettes.... These can then be used on any fire you wish, avoids the explosive nature of coal dust this way.


Now thats the kind of outside the box thinking I'm after, have you actually tried this and what kind of results have you had and how much cement did you use ?

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Re: What do you do with your coal dust ?

Post  Weston on Fri 22 Apr 2016, 5:15 am

Age old trick that one, Granddad used to do it when he had a coal fire in the house. I never did use an exact ratio, just enough cement to hold it together, dusty horrible job, but it did make use of the coal left over in his coal store.

Engine wise, I just keep the coal in bags these days and then put the whole bag in once all the usable lumps have gone, but that's full size. Not ideal to have a face full of plastic fumes....

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Re: What do you do with your coal dust ?

Post  LiveSteam on Mon 02 May 2016, 12:21 pm

I'll give it a go when I get a spare moment, I'll try a number recipes and see which works out best, I can image it wont need much cement to glue it together Cool

Anyhow as I was out on her on Sunday I grab a quick couple of pics showing the state on the ash pan, as you can see I cant imagine the damper has much effect Rolling Eyes

Although it does tend to offer a "self cleaning" option when on a road run Wink






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What to do with coal dust?

Post  LilyJack on Tue 03 May 2016, 1:34 pm

well it's definitely not good to stick in the firebox as I'd guess it's clog the tubes in no time so.. 2 suggestions :
1- chuck it.!!!
2- smear liberally on your mush, tell the "ole lady" you've been working like a dog and could really do with having a beer break.!
Personally I'd favour #2 🤔

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Re: What do you do with your coal dust ?

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