How to remove Arsenic from iron???

My powerful connections, I need to learn from your expertise!Is there anyway to remove arsenic from iorn in a very pratical and cost effective manner in mass production?

I am develop tinplate material recently and found that the arsenic level in the iron sheet is around 20-25ppm. But we are looking for a stable arsenic level below 20ppm.

We talked with more than 20 industry mateial makers and none of them is capable to lower the arsenic. Some study showing that arsenic is less active than iron, so to get the arsenic oxided and slag out is not possible.

It seems that we can only choose the ore with lower arsenic in first place. Looking forward to hear from you!

Regards