Assertion: phosphoric acid | /r/MadeOf | potassium ion recycle values
Facets:
value: from room temperature
type: LOCATION
Source sentences:
text: In the initial step of the process of this invention, phosphate rock from any origin, but usually of the type described above containing at least some fluorides, is acidulated with a solution of phosphoric acid containing potassium ion recycle values from room temperature up to about 95° C., and preferably about 70° to 90° C., for a sufficient time to achieve substantially complete acidulation, usually about 1/2 to 4 hours depending on the reaction temperature and using a sufficient amount of the phosphoric acid solution to completely solubilize the calcium phosphate formed.