The effects of granulation and ball milling

[Sb01343]

I ball mill for 5hours and my meal powder is faster than your last test.

Make sure your using a media like lead balls.

Make sure your ball mill is running at about 60rpm. If it too fast it will take much longer.

[LINK320]

whats the song?

[Tomi852]

@LINK320 Prodigy- Spitfire

[historysky]

so ball mill, then granulate?? is big granulated chunks good or bad?

[Sodcom]

Nope, if u mill it for 2 hours you will have the same effect as mortar&pestle for 12 hours.

[Hutproductions]

and whos gonna do that for 12 hours....

[concordskijr]

@Sodcom no its the other way around!

[Sodcom]

@concordskijr say what you want, but nothing beats 30 hours of ballmilling:D

[concordskijr]

@Sodcom ????? But i heard that if you ball mill for 30+ Hours it will burn at the same rate as just 12+ hours, but i don't raelly agree with this and i also think that it's down to how much milling media you use.

[Sodcom]

@concordskijr My ballmill has a bit low RPM, thats why i need 20-30hours..

[Hutproductions]

not really ball milling is more effective

[bpminime25]

whats the song?

[Hutproductions]

fire starter- prodigy

[appeltiser1]

can u use white spirit of thinner to granulate it?

[Sodcom]

@appeltiser1 You will need a binder, such as dextrin.. Dextrin doesn`t dissolve in alcohol, so you should use a mix of 75% water and 25% alkohol.

[DeskJetser]

couldnt you reduce 12+ hours down to, say, 3 hours by making your mill spin crazy fast?

please can someone tell me...

[megara13]

i have fast black powder in 2hours of milling..so you mustn't mill it for 13h...

[marine12320]

By meal powder, you must mean green mix. Meal powder is black powder that has been milled sufficiently in a ball mill. This is the final product before granulating to make lift powder. Green mix is just the chemicals are mixed together.

[ther0flcopter]

marine is right

[Hutproductions]

yupp yupp

[megalord299]

how does the electric ignition work? great video btw! 5/5

[BinaryReaper]

Its the ignition system from a model rocket just sends a positive and negative charge to each of the hook ups. Usually they are connected to a fuse of some sort.

[cah87]

To make the lift to you granulate then ball mill for 13hrs or do you ball mill then granulate?

[ElectricBam]

ball mill and then granulate

[tay1392]

very good job, thnaks, check my vids

[pike123456789]

can you tell me what the name of the song is?

[RicardusG]

Its "Spitfire" by Prodigy.

[gobidee]

lol imagine balling for 2 weeks :o

[TheFyroPyro]

@gobidee probably no different from 2 or 3 days

[ackpacket]

Part 6/6

One last thing. This video is really confusing. People have no idea what "granulated and ball milled for x hours" means. Are you ball milling your powder for x amount of hours and then granulating it? Are you granulating it then ball milling it for x amount of hours? In one comment you say "it's just ball milled". See the confusion? anyways, hope this helped you out. Msg me if you ever need some advice on something. Later.

[Hutproductions]

that was the meal powder only ball milled

and the other powders are first milled the granulated, it is just showing that the longer you ball mill the faster it burns

[ackpacket]

Part 5/6

launch less than 10 feet with the possibility of suffering damage too.

[ackpacket]

Part 4/6

Another point that has me scratching my head is the last comment, where you suggest lift powder should burn extremely quickly like the last batch in your video. That's incorrect. Lift powder is made by granulating meal powder for the sole purpose of slowing the burn rate. If meal powder was used "as is" for lifting purposes, the mortar would more than likely explode because the pressure builds to fast, and any arial shell would

[flyingfish555]

Again, granulating is not for the "sole purpose" of slowing it down. While the surface burn rate does decrease, the overall burn rate generally increases because the fire is allowed to flash through the gaps between the granules. Also, granulated powder is far more consistant in results than loose dust. Depending on the variable density/compactness of loose powder, you could get any range of burn rates (ranging from way below granulated burn rate to above granulated burn rate).

[flyingfish555]

With granulated, you always get the same burn rate. That being said, it is true that smaller granules burn faster than larger granules.

[flyingfish555]

So in addition to giving the appropriate burn properties for a given bore size or application, the granulation keeps those properties consistant, which is very important.

I thought I would also say that the optimum milling time depends on your equipment. A very efficient mill would probably not show much (if any) improvement from 3 to 13 hours!

[techohead01]

i mill my BP for 20-30 hours, then corn with water/ethanol mix. many people say that i will have easily reached the maximum potential by that point, but my tests prove it STILL gets faster. my meal powder doesnt' burn unless you light it with an oxy acetaline torch, and won't stay lit, and once finished, many people claim it must be flash powder. look at some of my videos.

[ackpacket]

Part 3/6

potassium nitrate to dissolve into the water and recrystallize on/in the charcoal and sulfur, which makes a somewhat more intimate mixture of the oxidizer and fuel. But larger shapes that come from granulating slow the fuel down.

[ackpacket]

Part 2/6

I would like to tell you though, in as helpful a way as possible, that you're quite misinformed as to the effects of granulating black powder. First of all, the rule of thumb with black powder is ALWAYS "the finer the powder, the faster it burns". Without exception. This video however implies that granulating black powder somehow helps burning?? The only way granulating would ever help burning would be by allowing some

[ackpacket]

Part 1/6

Hey kid. I've watched all of your videos. You're quite a scrapper, and a smart pyro at that!

I have a few comments for you though:

[Pyrotechniker2007]

aesome video man, 5stars

have you ever tried the CIA method?

This BP can also be very fast, look to the tags CIA blackpowder

[cah87]

great video man, Quick question though. Was the powder ball milled then granulated then ball milled again? Or what?

[Hutproductions]

no it was just ball milled

[cah87]

wow i cannot seem to replicate that effect. I have ball milled for over 12 hours and cannot get a burn that fast.. hmmm back to the drawing board :)

[Hutproductions]

what for the last powder- well first yo have to have your formula right- 75/15/10 ratio (kno3/charcoal/sulfur) then you are going to need enough media in your ball mill to really get some good esults. and granulating deffinetialy helps!