Trommel

[mogman]

Got a job coming up where I need to wash 300 ton of 10-20mm gravel that is in a reed bed so thought I’d build a trommel wash plant
Managed to get a few ingredients together so made a start today

Got some 30” pipe then joined them with 100mm flat bar where the mesh screen will be clamped on

Got some 60x6mm flat rolled to make the internal flights

To end up with this the spiral will go the full length with a twin spiral at both ends to get the stone in and out quicker than the middle part which will only be a single scroll

 

[kill]

Hope you can beat Parkers gold total from "Gold Miner's" before long

 

[the-mad-welder]

I insist you put a video up of this working when it's done!!

Otherwise there will be consequences!!

 

[Bobthebuilder]

what's going to be the power source

 

[sawdust]

what's going to be the power source

A push bike

 

[Bobthebuilder]

A push bike

it will need good gearing

 

[sawdust]

it will need good gearing

Plenty old "racers" lying in the back of some barns

 

[Hilly]

it will need good gearing

21 speed, be reet

 

[mogman]

what's going to be the power source

Got a electric motor and gearbox off a roller shutter door, going to turn a small trailer hub to fit the output shaft than friction drive on the drum

 

[mogman]

This will be the tank that the trommel will sit on, got it from one of my demolition jobs was an old molasses tank from a animal feed plant, just need to cut it in half and weld a baffle in to make a weir so hopefully the solids will settle out and cleaner water will flow over the weir to be pumped back into the trommel to wash the stone well that’s the theory

 

[Zebbedee]

A fair project there look forward to seeing the video of it running

 

[roscoe erf]

Got a job coming up where I need to wash 300 ton of 10-20mm gravel that is in a reed bed so thought I’d build a trommel wash plant
Managed to get a few ingredients together so made a start today
View attachment 698852
Got some 30” pipe then joined them with 100mm flat bar where the mesh screen will be clamped on
View attachment 698856
Got some 60x6mm flat rolled to make the internal flights
View attachment 698858
To end up with this the spiral will go the full length with a twin spiral at both ends to get the stone in and out quicker than the middle part which will only be a single scroll

I think I could spend a few interesting hours digging around in your yard

 

[Mursal]

When the open day?

 

[bkg]

When the open day?

Now, that's a very good idea i'm in, coffee with 2 sugars please

 

[roscoe erf]

Now, that's a very good idea i'm in, coffee with 2 sugars please

I will bring the cakes

 

[mogman]

These are going to be the support rollers

 

[Bobthebuilder]

there must be gold in them thar hills

 

[Mursal]

300 divided by 20T a load = 15 loads

An awful lot of work for 15 loads of reed bed gravel?

Must be gold ..................

 

[Sharpy]

300t X £15/t =£4500
Plus moving and disposal of 300t of waste.......

 

[mogman]

There’s a company which will wash the gravel but want £15 per ton to clean the gravel costs £22 per ton to buy
So far it as cost me £400 to buy the flat bar and have it rolled the rest is scrap that I have got from jobs plus I’m going to hire it out to a company that have to clean and size ceramic balls that come from an aluminium smelting plant I made a vibrating screen for them a few years ago but want a better way to do it