Perforated ceramic ball’s main materials are industrial alumina and GaoLin clay. It is formed through shaping, holing, high temperature calcination

Perforated ceramic ball classification

It has 5 types classified according to the content of AL2O3

Type of Perforated Porcelain Ball

Material Al2O3 content / %
General ceramic ball 20～30
Low Alumina ball 31～45
Media alumina ball 46～70
High alumina ball 71～90
Corundum ceramic ball ＞ 90

The number of holes of the perforated ceramic ball can be opened according to the actual use requirement and the size of the ceramic ball.

Normally it includes following four types

1.Single hole perforated ceramic ball

2.Three holes perforated ceramic ball

3.Five holes perforated ceramic ball

4.Seven holes perforated ceramic ball

 

The General size of the perforated ball as bellow

Dia 10mm Dia 13mm Dia 16mm Dia20mm

Dia25mm Dia30mm Dia38mm Dia50mm

Dia76mm or customized sizes

 

Industrial Perforated Ceramic Ball

The appearance of the perforated ceramic ball should be a regular ball. The surface quality should be conformed to following Table 1

Table 1 Appearance requirement

Appearance defect Features Scope Number of permissible defects
Φ ≤10mm Φ >10mm
Crack Crack inside the ceramic ball 3mm ≤length ≤ 5 mm Not allow ≤ 2
length > 5 mm Not allow
Spot Iron points, melting pits and slagging on ceramic ball surface 1mm ≤size ≤ 2 mm ≤ 2 ≤ 3
size> 2 mm Not allow
Bubble The empty bubble on surface 1mm ≤size ≤ 2 mm ≤ 2 ≤ 3
size > 2 mm Not allow

Dimension tolerance

The dimension tolerance of the perforated ceramic ball should be conformed to following Table 2

Table 2 Dimension tolerance

Diameter 10 13 16 20 25 30 38 50 76
Permissible tolerance ±1.5mm ±2.0mm ±2.5mm
Hole diameter 2~3mm 3~5mm 5~8mm

Physical and Chemical Property of the perforated ceramic ball

The physical and chemical properties of the perforated ceramic ball should conform to Table 3

Table 3 Physical and Chemical Property

Property Material
General ceramic Low alumina ball Media alumia ball High alumina ball Corundum ceramic ball
Chemical composition % Al2O3 20~30 31~45 46~70 71~90 >90
Al2O3+SiO2 ≥ 90
Fe2O3 ≤ 1
Water absorption / % ≤ 5 ≤ 8
Acid resistance / % ≥ 90
Alkali resistance / % ≥ 85
Temperature difference resistance  / ℃ ≥ 300
Max temperature / ℃ 1000 1200 1300 1400 1500
Compression strength kn/pc Φ 10 mm ≥ 0.60 ≥ 0.80 ≥ 0.90 ≥ 1.0 ≥ 1.20
Φ 13 mm ≥ 1.00 ≥ 1.20 ≥ 1.40 ≥ 1.60 ≥ 1.80
Φ 16 mm ≥ 1.50 ≥ 1.80 ≥ 2.00 ≥ 2.30 ≥ 2.60
Φ 20 mm ≥ 1.80 ≥ 2.20 ≥ 2.50 ≥ 2.80 ≥ 3.20
Φ 25 mm ≥ 2.50 ≥ 3.00 ≥ 3.50 ≥ 4.00 ≥ 4.50
Φ 30 mm ≥ 3.0 ≥ 3.50 ≥ 4.00 ≥ 4.50 ≥ 5.00
Φ 38 mm ≥ 4.00 ≥ 5.00 ≥ 5.50 ≥ 6.00 ≥ 6.50
Φ 50 mm ≥ 6.00 ≥ 7.00 ≥ 8.00 ≥ 9.00 ≥ 10.00
Φ 76 mm ≥ 10.00 ≥12.00 ≥ 13.00 ≥ 15.00 ≥ 16.00
Bulk density / (kg/m3) 1100~1200 1200~1300 1300~1400 1400~1600 ≥ 1600
PS:The bulk density is only for reference not for acceptance basis