Quality requirements for bauxite used as raw material for fused corundum

project

Second wheel factory

Fourth wheel factory

ω(Al ₂ O ₃ )%

≥85

≥80

ω(Fe ₂ O ₃ )%

<5

<6

ω(SiO ₂ )%

<5.6

ω(TiO ₃ )%

3.5 to 6.5

<5.5

ω(CaO)%

<0.4

ω(CaO+ MgO)%

<1.2

ω (loss on ignition)%

<0.5

<1

Silicon aluminum ratio (A / S)

≥15

≥12

Into the factory block mm

<250

20 to 300

Burnout rate%

<4

Note: l, a type diaspore bauxite; 2, clinker; 3 for ore grade