1, calcite quality standards
CaO Fe2O3 acuities were 54.5% and 0.020% or higher
Size: + 10-120 visual acuities were 0% and 45% or less
Uniform particles White noise free

2, lithium China stone quality standards
AL2O3 14% Li2O acuity 14% or higher
Granularity of Fe2O3 0.07% or less: + 20 visual acuities were 0%
- 120 mesh 40% or less
Uniform particles No precipitation block

3, China clay quality standards
AL2O3 16.0% Li2O acuity 16.0% or higher
Granularity of Fe2O3 0.07% or less: + 20 visual acuities were 0%
- 120 mesh 20% or less
Uniform particles Dry with no noise