Phosphorus mining industry indicators

project

category

Phosphate rock ore

Rock mineral apatite or apatite

Remarks

Boundary grade (P ₂ O ₅ )%

≥12

5~6

Minimum industrial grade (P ₂ O ₅ )%

15~18

10~12

Phosphate rock ore grade

(P ₂ O ₅ )%

I

≥30

Weathered ore suitable for wiping off the mud, the P2O5 of the grade I product can be reduced to 28%

II

<30~24

III

<24~15

Available thickness m

1 to 2

Stone removal thickness m

1 to 2

Note: 1, listed in the table refers to a type of calcium phosphate-based minerals, phosphate minerals other new types of ore beneficiation process according to the test to be determined; 2, phosphorus deficiency index industrial areas, according to the exploitation of deposits Considering the mode, the difficulty of mineral processing , the comprehensive utilization of the associated minerals or components, and the combination of minerals and fertilizers, the boundary grade and the lowest industrial grade can be appropriately reduced under the conditions of macroeconomic benefits; 3. Available thickness The thickness of the stone removal is determined by the ore deposit conditions and the mining method. The recoverable thickness of the gently inclined deposit is generally not less than 1.5 m, and the thickness of the rich or steeply inclined deposit can be appropriately reduced. The open pit mining can be used. Thickness and stone removal thickness can be appropriately increased.