iamagoldenoldie2, thank you for the info.
With the area to cover and gravel volume, this method of lead removal will be pretty expensive, also the gravel needs to go back into use.
The cost of fuel would be awesome, but once everything was condensed, I was heading down the road of a waste oil burner to use for melting
the brass and lead to make ingots of pure metals for later casting.
The concept of sorting cases via a vibratory tumbled system is very interesting, a screening table would be easy to setup to drop the smaller gravel
then part of the remaining task could be a manual pick up and maybe a shaker table just made out of plywood sheet with timber strips glued to it for the grooves
NO WATER available but dry use anyway.
I considered using a vibrating channel system with metal detection to fire and air blast to blow the cases out of the channel into a capture as the gravel passed by,
it would still collect some gravel but a quick sort, but it could be much more simple than that I'm sure.
The lead could be concentrated with a shaker too I would assume.
This is not so much as to remove
all the lead contamination but more for larger pieces to be removed and the brass to be removed
as there is a build up.
I will personally use both the lead and brass, lead for projectiles and brass for casting.
As I can gain access to the range during the week when there is no shooting, 2-3 days per range is my likely window, but no reason I cant do half of one and return
the following week to do the other half if the process is slower.
It seems shaker tables work depending on angle, groove depth, speed and frequency of vibration, media flow, and water flow.
Can any one explain these or point me to where I can do more reasearch?
Very interesting idea.
Here is an interesting simple design of a vibrating plate, with a tyres on top of each other, seperated by mesh of different sizes and a hole cut into
each tyre to feed out the screened sizes via a tube/pipe, it might do a descent volume and job of seperation.
The screens could even be a plate with slots for the case sizes expected to be in the particular range, as per the second vid.
https://www.youtube.com/watch?v=GWImU7CCU8g
https://www.youtube.com/watch?v=wlZaMxbDUgQ