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GJ-I（Normal beads）

Chemical composition

Physical Characteristics

Diameters:(mm)

As blasting, road-marking and grinding media, it has features of orystal, steady chemical change and low cost.

SiO₂　AL₂O₃
CaO　MgO
Na₂O

Proportion:2.45g/cm³
Artificial proportion:1.5g/cm³
Micro-rigidity:≥635kg/mm²

0.2-0.4 　　2.0-2.5
0.4-0.6 　　2.5-3.0
0.6-0.8 　　3.0-3.5
0.8-1.0 　　3.5-4.0
1.0-1.5 　　4.0-4.5
1.5-2.0　　 4.5-5.0

GJ- II

GJ-II（Intensive Beads）

Chemical composition

Physical Characteristics

Diameters:(mm)

Silicate of boron grinding glass beads has features of tenacity, wear resistance, steady chemical change and 7.2 PH-value are suitable both for grinding materials with low, middle adhesion and blasting processes.

SiO₂　AL₂O₃
CaO　BaO
Na₂O　B₂O₃

Proportion:2.5g/cm³

Artificial proportion:1.5g/cm³

Micro-rigidity≥680kg/mm²

0.6-0.8	2.0-2.5
0.8-1.0	2.5-3.0
1.0-1.5	3.0-3.5
1.5-2.0	3.5-4.0

GJ- III

GJ-III（Wear-resisting Beads）

Chemical composition

Physical Characteristics

Diameters:(mm)

Featured with high proportion, intensity, steady chemical change and less abrasive than zirconium oxide ones, wear-resisting glass beads are suitable for both grinding materials with middle, high adhesion and wet or dry grinding media by micro-element processes.

SiO₂　AL₂O₃
CaO　MgO
Na₂O　ZrO₂
TiO₂

Proportion:2.8g/cm³Artificial proportion:1.65g/cm³Micro-rigidity:≥720kg/mm²

0.6-0.8	2.0-2.5
0.8-1.0	2.5-3.0
1.0-1.5	3.0-3.5
1.5-2.0	3.5-4.0

GJ- IV

GJ-IV（Pure White Beads）

Chemical composition

Physical properties

Diameters:(mm)

Being of colorless, crystal, high-intensive, slightly abrasive and steadily chemical changing features, pure white beads are suitable for grinding high-grade and pure white materials.

SiO₂　AL₂O₃
CaO　MgO
Na₂O　TiO₂

Proportion:2.7g/cm³

Artificial proportion:1.6g/cm³

Micro-rigidity:≥700kg/mm²

0.6-0.8	2.0-2.5
0.8-1.0	2.5-3.0
1.0-1.5	3.0-3.5
1.5-2.0	3.5-4.0

Type S

Item No.

Specification（mm）

Bearing pressure（N）

Mohs hardness

Roundness

Packing density

Granularity

Chemical components

5210
4505
4507
4509
4511
4513
4515

0-0.05
1.25-1.55
1.70-2.00
2.30-2.60
2.85-3.30
3.70-4.30
4.30-5.00

300-450
550-700
850-1000
1100-1450
1700-2100
2100-2600

≥6
≥6
≥6
≥6
≥6
≥6

≥90%
≥90%
≥90%
≥90%
≥90%
≥90%

1.53
1.47
1.47
1.47
1.47
1.46
1.45
1.45

226353
95493
48892
28294
11937
7074

SiO₂
Na₂O
K₂O
CaO
MgO
AL₂O₃
Fe₂O₃

Type M

Item No.

Diameter

Dia. error（mm）

Bearing pressure（N）

Mohs hardness

Roundness

Packing density

Granularity

Chemical components

5002
5003
5004
5005
5006
5009
5010
5011
5012
5013
5014
5015
5016

1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
6.0
7.0
8.0
9.0
10.0

+/-0.2
+/-0.2
+/-0.2
+/-0.3
+/-0.3
+/-0.3
+/-0.3
+/-0.3
+/-0.3
+/-0.3
+/-0.4
+/-0.4
+/-0.5

750
1000
1400
1600
2000
2300
2700
3200
4000

≥6
≥6
≥6
≥6
≥6
≥6
≥6
≥6
≥6
≥6
≥6
≥6
≥6

≥99%
≥99%
≥99%
≥99%
≥99%
≥99%
≥99%
≥99%
≥99%
≥99%
≥99%
≥99%
≥99%

1.50
1.50
1.50
1.50
1.50
1.50
1.50
1.50
1.48
1.48
1.48
1.45
1.45

226353
95493
48892
28294
17818
11937
8383
6112
3537
2227
1492
1048
764

SiO₂
Na₂O
K₂O
CaO
MgO
AL₂O₃
ZnO
B₂O₃

Instructions

1、	To select glass beads in types,sizes and quantity in accordance with adhesion,rigidity and dispersal of the grinded materials.
2、	To clean glass beads and mill's inside before the processes.
3、	To input the grinded materials firstly and a certain amount of glass beads later.To add continuously glass beads till 70%—85% of the mill is full.
4、	To forbid to keep glass beads running with little grinded material for a long time,as the glass beads inside the mill are easily broken at high speed operation.
5、	To add fresh glass beads to ensure the quality of grinded materials.