I've looked around but I'm having issues finding any reasonable phosphate source. I'm not really too concerned with what sort of phosphate it is.
It's not a part of any detergents I can find, and afaik phosphates are banned in detergents in the EU for environmental reasons. All fertilizers I've
investigated seems to be <10% phosphates and I'm not too confident in my ability to concentrate it from such a low percentage.
The main potential use for it would be experiments with making refractory bricks and such, so ideally a rather large amount for low cost is the
idea... Anyone have any ideas? |