Mineralogical Characteristics of Phosphate Tailings for Comprehensive Utilization

Table 2

Mineral composition.

Type	Mineral	Molecular formula	Size (mm)	Content (%)
Phosphate	Collophane	Ca2Ca3[PO4]3(OH,F)	<0.004, aggregate 0.03–0.5	45.0
	Monazite	Ce[PO4]	0.02–0.03	Very few
Oxide	Quartz	SiO2	0.03–0.2	18.3
	Limonite	FeOOH	0.04–0.1	Very few
	Anatase/rutile	TiO2	0.02–0.05	Very few
Silicate	Plagioclase	Na[AlSi3O8]	0.06–0.2	4
	Potassium feldspar	K[AlSi3O8]	0.06–0.2	3
	Chlorite	(Mg, Fe, Al)3(OH)6{(Mg, Fe, Al)3[(Si, Al)4O10](OH)2}	<0.05	<1
	Sericite	K{Al2[AlSi3O10](OH)2}	0.01–0.1	Very few
	Zircon	ZrSiO4	0.01–0.04	Very few
Carbonate	Dolomite	CaMg[CO3]2	0.01–0.5	16.3
	Calcite	CaCO3	0.01–0.5	12
Natural elements	Carbonaceous	C	<0.01	Very few
Sum	—	—	—	99.6