Drying Blasting Grit

[awemawson]

I've maybe two tons of expendable blasting grit in poly sacks - they are not sealed but have 'air flaps' to let them breath. Previous owner stored them outside, and I collected them in a torrential downpour so they are damp enought to clog in my Hodge Clemco blasting pot. If it were summer I'd spread them in the sun, but it's a wet autumn - any suggestions for drying them as I've a blasting job coming up. I'd thought of maybe making a bag sized vacuum pot and boiling off the water at low pressure, but other suggestions welcome.

AWEM

 

[the snooper]

old tumble dryer modified to stop grit falling out through filter

 

[rtbcomp]

I've used an electric oven in the past, but that's expensive., I think it took 10kWh to dry one bag.

Greenhouse, Cloches, buckets lying about the house, airing cupboard, pile it loose around workshop stove,