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

Table 6

The range analysis of P₂O₅ grade.

Factor	Level
	K1	K2	K3	Range analysis
Acid type	91.91	97.32	98.52	6.61
Temperature	95.37	95.33	97.05	1.72
Concentration	93.80	96.04	96.71	2.91
Reaction time	91.96	98.07	97.72	6.11