Problem with BP corned granulated

[Jordan123]

Hi guys,

 

I make BP puck for my second time , and i have problem for granulated the puck when is dry ...

The BP puck is very compact and when i granulated with screen, i abyss the screen because the puck is very compact and i must press hard for make granulated...

 

I make 2FA ( first 4" screen second 12" screen)

 

Have you some methods for not abyss my screen ?...

Thank's

[dynomike1]

Try granulating before it is dry.

[Jordan123]

When i've make puck, if i granulated it's not very press and if i wait a little dry, i've some powder and not granulated...

[LTUPyro]

I'm not sure if I understand it right, you push your pressed pucks through screen?

Usually dry puck is smashed with something like wooden mallet to the right size and then screened through screen to seperate different sizes of granules.

[Jordan123]

I break the puck with a wooden scrool on my screen.

How is break with mallet , i've not very good understand :/

 

I'm very sorry for my englisch

[LTUPyro]

You don't have to break pucks on your screen, this will damage your screens very quickly. First of all take one of your pucks and put it in some kind of plastic bag ( zip lock works good). Second, put that bag on heavy-stable ramming post and just whack it with mallet, hammer or whatever until you got approximately right size granules. Then dump all content from bag on 4 mesh screen and sift all the granules out that will pass through that screen, and re-crush the granules that won't pass through, until all the BP has passed through that screen. Then sift that BP through 8-mesh screen. The granules that won't pass the 8-mesh, but have passed through the 4-mesh are 2FA granulation

[marks265]

When I used to make corned powder I would reduce the pucks as much as possible then I would put the bits into a mill jar. The mill jar had holes drilled in it all over the place to act as a screen. With billiard balls and the chunks of BP puck loaded in the perforated mill jar I spun the jar with a catch pan underneath to catch the grain as it feel through. This was the major reason when I built my combination NASCAR star roller (from Passfire)/ball mill. I also have a variable speed drive in assisting the finesse of how the BP feel out of the trommel mill.

Later on and in its final days I made bigger holes and lined the inside with screen to control particle size.

[Jordan123]

Ok, thank you very much for your help Marks265 and LTUPyro

[marks265]

I read something earlier that threw up a reminder for me. It did help to corn the pucks right after they were pressed. If you waited until they were dry you would most definitely have a lot of work to do. This of course has a variable of which binder (if any) is used and how much for your process.