Research on Enrichment of P₂O₅ from Low-Grade Carbonaceous Phosphate Ore via Organic Acid Solution

Figure 2

SEM-EDAX diagrams of phosphate rock after (a, b) and before (c) citric acid leaching. (Point 1, Point 3, and Point 6 are colloidal phosphate; Point 2, Point 4, and Point 5 are dolomite).

(a)

(b)

(c)