An actual case: I had a gentleman quite perturbed with our manufacturing company say 10 years ago. It was a nice inclined vibrating screen he had purchased doing a WET SCREENING job.He had very hard to clean material sticking to his rock and he was having fits trying to clean it off with water.
THE original call was a complaint that the vibrating screen he had purchased was .........ummmm.......well........?!?!?!?!?!? .....not a very good design.....and he wanted help. Appears he blew holes through the wirecloth and the support tubes below it and was somehow identifying this as a defect in the screen box design.
I flew out west to help him in person and here is what we found.
He had rigged his water system up to operate at 110 psi at the spray nozzle heads which was helping to blow his sticky dirt particles off his stone. Also, blowing holes through everything else below it. High psi, about 12" above the wirecloth, spraying straight down on highly abrasive material........NOT SWELL.
The warranty conversation he was hoping for redress with did not go well. The psi typically on these type of spray system for aggregate are around 35 psi range. GPM needed is typically in the range of 3-5 USGPM per ton per hour.
We suggest going to wash trough deck design. This unit was 6x16 and had 4 hooked sections of wirecloth 48" long. We recommended going to 3 sections 40" long followed by an 8" long wash trough followed by another 40" long piece of wirecloth and trough and so on down the deck with the last section being a full 48" long.
........................................
What are we accomplishing????
..........................................
The stone now goes down the 40" length of wirecloth and falls into a curved, urethane lined steel trough of say 3/8" thick AR STEEL which is the width of the vibrating box.
............................................
We now point and spray the WATER NOZZLES into the stone which is CHURNING, turning, rubbing against each other with its own hardness, to SCRUB the dirt off .......like a mini scrubber and cleaning the dirt off with the spray nozzles. The material repeats this procedure - three times down the deck length.
.................................................
We end up with scrubbed, washed stone being sprayed at 35 psi not 110 or whatever and causing damage to the machine. Your stone is cleaner and the efficiency is improved
.................................................
When I bring up wash troughs over the years with end users, they always seem.........WOW......that sound great. But, alas this is very old proven technology forgotten as the years have gone by. Used a lot in POTASH.
.............................................
Also called REPULPING TROUGHS
Regards, George Baker, MODERATOR ■
Best Regards, George Baker Regional Sales Manager - Canada TELSMITH Inc Mequon, WI 1-519-242-6664 Cell E: (work) [email]gbaker@telsmith.com[/email] E: (home) [email] gggman353@gmail.com[/email] website: [url]www.telsmith.com[/url] Manufacturer of portable, modular and stationary mineral processing equipment for the aggregate and mining industries.
Wash Troughs - what is the scoop?
GOT HARD TO clean material????
An actual case: I had a gentleman quite perturbed with our manufacturing company say 10 years ago. It was a nice inclined vibrating screen he had purchased doing a WET SCREENING job.He had very hard to clean material sticking to his rock and he was having fits trying to clean it off with water.
THE original call was a complaint that the vibrating screen he had purchased was .........ummmm.......well........?!?!?!?!?!? .....not a very good design.....and he wanted help. Appears he blew holes through the wirecloth and the support tubes below it and was somehow identifying this as a defect in the screen box design.
I flew out west to help him in person and here is what we found.
He had rigged his water system up to operate at 110 psi at the spray nozzle heads which was helping to blow his sticky dirt particles off his stone. Also, blowing holes through everything else below it. High psi, about 12" above the wirecloth, spraying straight down on highly abrasive material........NOT SWELL.
The warranty conversation he was hoping for redress with did not go well. The psi typically on these type of spray system for aggregate are around 35 psi range. GPM needed is typically in the range of 3-5 USGPM per ton per hour.
..................................................................
We suggest going to wash trough deck design. This unit was 6x16 and had 4 hooked sections of wirecloth 48" long. We recommended going to 3 sections 40" long followed by an 8" long wash trough followed by another 40" long piece of wirecloth and trough and so on down the deck with the last section being a full 48" long.
........................................
What are we accomplishing????
..........................................
The stone now goes down the 40" length of wirecloth and falls into a curved, urethane lined steel trough of say 3/8" thick AR STEEL which is the width of the vibrating box.
............................................
We now point and spray the WATER NOZZLES into the stone which is CHURNING, turning, rubbing against each other with its own hardness, to SCRUB the dirt off .......like a mini scrubber and cleaning the dirt off with the spray nozzles. The material repeats this procedure - three times down the deck length.
.................................................
We end up with scrubbed, washed stone being sprayed at 35 psi not 110 or whatever and causing damage to the machine. Your stone is cleaner and the efficiency is improved
.................................................
When I bring up wash troughs over the years with end users, they always seem.........WOW......that sound great. But, alas this is very old proven technology forgotten as the years have gone by. Used a lot in POTASH.
.............................................
Also called REPULPING TROUGHS
Regards, George Baker, MODERATOR ■