High alumina ball

High alumina ball

Description:

High Alumina Ball is made from high qualityα-Al2Owith a small amount of rare-earth oxide and processed by shaping and firing. It has high alumina content and low silica (SiO2). With characteristics of high hardness, high strength, High wearability, high density, small volume, high thermal resistance, good corrosion-resistance, non-pollution, and so on. It is widely used in ceramics, oil, fine chemical industry, construction material, metallurgy, medical field, mineral processing, electronics, and other diverse fields.

Composition90 series92 series95 series97 series99 series99.5 series
Al2O3,%≥90≥92≥95≥97≥99.0≥99.5
SiO2,%≤5.0≤4.0≤3.0≤1.0≤0.3≤0.2
Fe2O3,%≤0.8≤0.5≤0.1≤0.1≤0.2≤0.05
CaO,%≤1.0≤1.0≤1.0≤1.0≤0.15≤0.1
MgO,%≤1.0≤1.0≤1.0≤0.5≤0.2≤0.1
Na2O+K2O,%≤1.0≤1.0≤1.0≤0.5≤0.3≤0.3

Technical Index

              Index90 series92 series95 series97 series99 series99.5 series
≥90≥92≥95≥9799.0
Water adsorption, %≤3.0≤3.0≤3.0≤3.0≤3.0≤3.0
Acid resistance, %≥98≥98≥98≥98≥98≥98
Alkali resistance, %≥96≥96≥96≥96≥96≥96
Thermal shock resistance3,  / ℃≥800≥800≥800≥800≥800≥800
  Thermal resistance / ℃≥1450≥1500≥1550≥1600≥1650≥1700
Crushing strength kN/pc
Φ3 mm≥0.30≥0.35≥0.40≥0.45≥0.50≥0.6
Φ6 mm≥0.80≥0.85≥0.90≥0.95≥1.00≥1.10
Φ8 mm≥1.30≥1.35≥1.40≥1.45≥1.50≥1.60
Φ10 mm≥1.75≥1.80≥1.85≥1.90≥1.95≥2.30
Φ13 mm≥5.80≥5.85≥5.90≥5.95≥6.00≥6.50
Φ16 mm≥6.80≥6.85≥6.90≥6.95≥7.00≥7.50
Φ20 mm≥9.60≥9.65≥9.70≥9.75≥9.80≥10.00
Φ25 mm≥13.80≥13.85≥13.90≥13.95≥14.00≥15.00
Φ30 mm≥14.80≥14.85≥14.90≥14.95≥15.00≥16.50
Φ38 mm≥17.80≥17.85≥17.90≥17.95≥18.00≥19.00
Φ50 mm≥21.40≥21.45≥21.50≥21.55≥21.60≥20.00
Φ76 mm≥33.80≥33.85≥33.90≥33.95≥34.00≥35.00
Bulk density Kg/m3≥1800≥1850≥1900≥20002100≥2200

The data of bulk density is given for reference only, not as the acceptance criterion.

Size

Diameter Ф368101316202530385076
Tolerance (mm)± 1.0± 1.0± 1.0± 1.0± 1.5± 1.5± 1.5± 1.5±2.0±2.0±2.0±2.0

Chemical Industry standard HG/T3683.1-2013《Industrial ceramic ball-Inert ceramic ball》