hey guys my name is jason with mountain bakery mining and metals and today we're going to run a sample of pc boards through our hammer mill and shaker table crush them up and try and get the precious metals and base metals out of them we have three different samples here and what do you guys think those low-grade i'm not a real board expert here but they've got some stuff on them here's what they're calling mid-grade boards kind of see what these are they don't have any i don't know got some of these what they call them flat packs i guess there's a bunch of gold pins it looks like these little guys so that's mid-grade and this is the high-grade stuff and i think these are motherboards right is that what these are these are motherboards out of computers but they've got these little gold chips in the corner this one's pretty nice it's got a bunch of them so that's kind of stuff we're going to be running let me go show you the system here's the system we're going to be running you got our 16 by 12 hammer mill up here i'm going to feed the boards down the top crushes up the boards through a screen and with water flows down onto the shaker table here's our 4x8 shaker table and i was running a sample of copper wire chops across this last time so i had this this plastic sheet on it i'm going to take that off clean the table out really good but then i think i'm going to put the plastic sheet back on i kind of like that i'm going to try try that some more that i use it to break the surface tension and help all the metals fall down and get in the grooves to come over the shaker table this is uh the number one and the number two concentrates here's the number three midlings and the number four tailings and for this customer i got those three different samples i'm gonna give them all of one all of two and all of three back and take a representative sample of the number four tailings so let's get this stuff fired up and we'll run some boards now normally what i do with these big boards is i'd pre-shred them through one of our big hammer mills but we've sold all our demo equipment and everything so i need to get them a little bit smaller to go in the little pcb system so i'm using our iron worker in the shop just to share them into smaller pieces that way they put down the throat of that hammer mill so here i can actually do it once see if i can make this work here double production and there you go finished product ready to go in the hammer mill i'm going to start with the low grade boards first because uh that way we don't contaminate with some of the higher value boards if we're going backwards but i've got the low grade boards i'm going to put them in buckets i'm going to get a weight on them and then we'll get a total weight and we'll start running all right total weight on all the low grade is 22.1 kilograms uh so um so hey foreign down um huh uh so all right we'll take a quick look here at what we recovered this is the low grade low-grade boards this is the number one fraction the high grade concentrates pretty much pure metal all a lot of copper you can see this stuff on the table had a lot more gray stuff in it so i think it had a lot more solder that tin lead solder probably there's our number one here's a look at our number two there is still quite a bit of copper and it's pretty much all metal but a lot more aluminum in the number two concentrates a few little pieces of plastic board but that's i mean by weight that's 99 98 metal so those two are the concentrates here's a look at our number three middlings so we can get this focused here pretty much all plastic there might be some aluminum flakes in there it's kind of hard to tell with the white insulation and maybe every once in a while a stray copper hair wire or something don't trust the stuff in my finger because i was just in the number one and number two but like there's there's maybe a flake of copper but this is this is mostly plastic so that came pretty clean and then here is a sample of the number four and it's mostly sludge i'm not even stick my hand in there but i got a little bit of sample in number four but a lot of that is just slime sludge there's not much in there so i'm gonna get all these bagged up and weighed actually before i do that um the low grade stuff had a lot of these big huge aluminum heat sinks on them stuff like that and i manually took that off of the hammer i took that off because putting that stuff down the hammer mill with a point eight millimeter screen uh just it it's not that's not what it's designed to do there's a huge transformer all that steel it's it's just not designed to do that so the best thing for these would be to pre-shred these through a bigger hammer mill like a two or three inch uh hole or slot screen have a guy picking out all these bigger pieces of aluminum and metal before they go into the the smaller hammer mill but um we'll we'll get a weight on all this stuff and figure out where uh the metal is and how much we recovered here's the results from our low grade boards we had a total of 22.1 kilograms i picked off two and a half kilograms so this is how much that actually went through the system the number one and the number two weighed 7.15 kilograms that leaves 12.4 kilograms and number three and number four which is more or less waste and when you divide 7.15 by the total weight it ended up being 30 36 metal now one of the things i got raked over the coals on a previous video i did about weighing wet and everybody got all concerned about me weighing wet the reason why i don't think it's a big deal correct me if i'm wrong i'm not trying to start a huge youtube you know feud here but copper by weight is nine times heavier than water so if this jug had equal parts water and copper by volume it would be ninety percent copper by weight so it'd be i'd be ten percent off if i weighed it and said it was all copper this stuff is like you know 99 copper 95 copper so the amount of water in here it's it the density is so small compared to the metal that it's like almost irrelevant the water weight in here that's my thought correct me if i'm wrong you guys tell me what do you think the the amount i'm off is in a percent by weighing it damp then you know again this is like there's there's no water coming out of it it's just it's just damp what do you think leave a comment below this might give us a little bit better look at what's in here this is the number one a lot of copper a few pins i expect there's quite a bit of steel in here as well so it should by right be run under a magnet and see what they recover as far as steel is concerned but there's the number one we'll slide over here to the number two again these are all low grade see can i get in the shadow here there we go but there's a few little pieces of board a few little pieces of plastic 99 metal some finer stuff in here it looks like there's more kind of hair wire and stuff so anyway there's the low grade number one and number two moving on to our mid-grade boards here and it doesn't look like there's anything for me to pick off of these guys so these will these will run through pretty easy and fast um but let me get a weight on these and then we can get him run through the hammer mill uh time so well now i'll take a look at the results from the mid-grade boards and here is the number one and i think there's actually less by weight or maybe just about the same and number one and number two i haven't weighed him yet but most of those boards weren't populated and so i think mostly what comes across into the number one is like the pins and the the larger pieces of copper and there just weren't very much of those number two has more volume and it's a lot flakier it's more flaky like uh the copper laminated between the boards i think that's what most of the weight in these boards were there were some that had some pretty nice gold uh plating on them but for the most part it's that copper flake here's the number three middlings and there's actually some copper in here you can see when i dig down you get into some of it i don't know if you can see it in there but there's definitely some going across the two safety grooves into the number three and again they're like super flat flaky copper pieces some still have pieces of board attached to them like they're the laminations between the fiberglass but there's not a whole lot here this was all the the boards we ran and this could very easily be run back through the hammer mill and onto the table to capture a lot of that copper since you you know what happens is most of the the copper floods across the number one and number two and there's only a certain capacity the table can take and so any extra copper the lightest flakiest stuff gets pushed down into the number three now this is all ground up you could run this back to the hammer mill in like five minutes or less run it back onto the shaker table and recover a huge percentage of this copper so here's the results from the mid-grade boards we started out with 32.7 kilograms number one and number
two weighed 11.1 kilograms we ended up with 21.6 kilograms and number three and number four there's probably a little bit of metal in there and number three but not a whole lot and at 11.1 kilograms that's 34 percent metal so that's pretty good recovery on those mid-grade boards lots of copper not a lot of populated boards in there so mostly copper with probably some gold from the plating now we're going to run our server boards that's what the tag says they've got all kinds of goodies on them they've got a bunch of gold pins and we've got i don't know what that is these things we talked about earlier those little gold chips on the corner these things got all kinds of stuff going on so we're going to run those let me get a weight on them all together we have 23.2 kilograms of server boards so i took that sheet off the shaker table as you noticed in the last one and i'm going to run the server boards with it off as well and the reason was is i had this foam start coming out of the hammer mill and man it's just like thick foamy junk there's probably two or three inches of it on top and it's like it's heavy i mean it's like it's real stiff it's almost like whipping cream does anybody know what that is what what do you think that is and how do i get rid of it because when i was running with the plastic on the table man it just like ballooned up and made these huge blobs and it kind of gummed up under the plastic sheet it wouldn't come out and it's obviously filling up my settling pond um it doesn't seem to be hurting anything but you know it's kind of a pain and i got to scrape it off or scoop it off and get rid of it so if there's something i can put in the water to knock all that foam down let me know leave me a comment below one so thank you so so so so and here is our concentrates from the server boards there's our number one looks very similar to the mid-grade boards there might be a little few more pins and stuff in here but probably more precious metals i think this is where the precious metals go based on all the pins the gold plating and you know if there's any free gold wires that they're so dense they come into the number one here's the number two this is again mostly copper flake looks like the copper laminated between the fiberglass i don't see any pins in here at all i bet this stuff is mostly copper uh and a little bit of aluminum you can see here on the edge but that's the number two and then the very similar looking stuff to the mid grade it's mostly plastic a little bit of copper flake but based on the weight of the bucket there's probably not a whole lot of copper in here because the bucket doesn't weigh very much you know based on the volume of stuff i have in here so there's the number three and again we got number four that sludge kind of stuff again so i'll get this stuff weighed and figure out what we recovered and here's the server boards we started with 23.2 kilograms number one and number two weights there that leaves 13.75 kilograms in number three and number four the 9.45 kilograms of metal
we recovered is 41 metal by weight so these are obviously the highest metal content and probably the richest as well all right guys well thanks for watching our test i hope you guys enjoyed it and uh if you have any interest in any of our equipment you can find our contact information down below in the corner and we do run tests for customers so if you're interested in running some tests with us give us a call or shoot us an email we do charge for the service we'd love to talk about it with you and hear about your problem and maybe come up with a solution for you so thanks again for watching and we'll see in the next video
2022-08-30