Couple of links on fritted trace elements, articles from over fifty years ago, one mentions the fritting process for these to have been discovered ten years before -
scholar.lib.vt.edu
scholar.lib.vt.edu
Frit is also used in glassmaking and ceramics, as intermediate stages of their manufacture, and has been for many years ... there is not much new about this, and in humid zones with leached-out soil there is no doubt in my mind that a fritted fertiliser designed for specific regions would work well ... only question is, how much would it cost per tonne to turn it out ... mining has to be ultra-cheap, square miles of it right to surface, it'll be about how much processing is required, how much natgas burned per tonne, how stiff the capex servicing ... 50m capex they say, that may have been for a smaller plant than they end up finding they need
Grade comes in anywhere near consistent, that'll be a big IF knocked back |
