Assertion: phosphoric acid | /r/HasProperty | separated as product
Facets:
Source sentences:
text: As indicated above, this invention is concerned with a multi-step procedure for the preparation of essentially fluoride-free products, preferably alkali metal phosphates and phosphoric acid, by the acidulation of phosphate rock, which procedure is conducted in the substantial absence of fluorine pollution and wherein the fluorides may be recovered in usable form, and wherein phosphoric acid may be regenerated for reuse in the system and/or separated as product.