Some company is offering me to take a large number of barrels full of worn out steel shot blast. It is a all steel powder with grains the size of regular table salt.
I took a sample to a scrap yard and they say that they do not want to pay for it as there is "no market for this commodity". As I cannot easily see why this powder cannot be melted, I would like to see if anyone knows why? What is so bad about used all steel shot blast media?