High alumina ball

High alumina ball

Description:

high alumina ball is made from good qualityα-Al2Owith 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 wear ability, high density, small volume, high thermal resistance, good corrosion-resistance, non-pollution and so on. It is widely used in in ceramics, oil, fine chemical industry, construction material, metallurgy, medical field, mineral processing, electronics and other diverse field.

          Al2O3compositionhigh alumina ceramic ball
90 series92 series95 series97 series99 series
Al2O3,%≥90≥92≥95≥9799.0
SiO2,%≤5.0≤4.0≤3.0≤1.0≤0.3
Fe2O3,%≤0.5≤0.5≤0.1≤0.1≤0.2
CaO,%≤1.0≤1.0≤1.0≤1.0≤0.15%
MgO,%≤1.0≤1.0≤1.0≤0.5≤0.2
Na2O+K2O,%≤1.0≤1.0≤1.0≤0.5≤0.3

(2) Technical Index

                   type index90 series92 series95 series97 series99series
≥90≥92≥95≥9799.0
water adsorption%≤5.0
acid resistance%≥90
alkali resistance%≥96
thermal shock resistance3  / ℃≥800
  Thermal resistance / ℃14501500155016001650
crushing strength kN/pcΦ3 mm≥0.30≥0.35≥0.40≥0.45≥0.50
Φ6 mm≥0.80≥0.85≥0.90≥0.95≥1.00
Φ8 mm≥1.30≥1.35≥1.40≥1.45≥1.50
Φ10 mm≥1.75≥1.80≥1.85≥1.90≥1.95
Φ13 mm≥5.80≥5.85≥5.90≥5.95≥6.00
Φ16 mm≥6.80≥6.85≥6.90≥6.95≥7.00
Φ20 mm≥9.60≥9.65≥9.70≥9.75≥9.80
Φ25 mm≥13.80≥13.85≥13.90≥13.95≥14.00
Φ30 mm≥14.80≥14.85≥14.90≥14.95≥15.00
Φ38 mm≥17.80≥17.85≥17.90≥17.95≥18.00
Φ50 mm≥21.40≥21.45≥21.50≥21.55≥21.60
Φ76 mm≥33.80≥33.85≥33.90≥33.95≥34.00
Bulk density Kg/m3≥1800≥1850≥1900≥20002100

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

(3) size

DiameterФ368101316202530385076
Tolerance mm± 1.0± 1.5±2.0

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