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Wear Parts

Wear Parts

Wear parts are necessary to maintain high throughput manufacturing, such as processing pulp into paper or thread into fabric.  The sheer volume and rates associated with these industries necessitate a minimal amount of operational downtime and therefore a certain longevity or lifetime in the supporting components.  To ensure component longevity, ceramic wear parts are often incorporated into these operations, replacing similar metal or polymer-based parts.

Alumina wear parts are commonly used in pulp and paper, textile, industrial grinding, food, pharmaceutical and medical industries.  Parts such as wear liners, valves, plungers, tools and blades, cones, nozzles and tips, seals, bearings, tubes, and rods are all made from alumina in order to survive particularly harsh manufacturing conditions.

Almatis calcined aluminas for wear parts are available as unground, continuous ground and batch ground products.  The product choice is dependent on processing capability, desired alumina content in the formulation and the end-use application.  Lower purity aluminas, such as A2 and WRA, are typically used as a component in lower alumina formulations.  As the alumina content in the formulation increases, the product choice also transitions to a higher purity.  Generally the highest alumina-containing formulations are for the most stringent applications and may require a batch ground product.

Unground calcined Aluminas

CL 3000

Primary Crystal Size = 1.8µm
Specific Surface Area = 0.70 m2/g
Na2O Content = 0.06%

CT 1200

Primary Crystal Size = 1.1µm
Specific Surface Area = 1.2 /g
Na2O Content = 0.06%

A 2

Primary Crystal Size = 3.0µm
Specific Surface Area = 0.40 m2/g
Na2O Content = 0.30%

A 35

Primary Crystal Size = 2.7µm
Specific Surface Area = 0.50 m2/g
Na2O Content = 0.11%

HVA

Primary Crystal Size = 2.7µm
Specific Surface Area = 0.50 m2/g
Na2O Content = 0.12%

WRA

Primary Crystal Size = 2.3µm
Specific Surface Area = 0.60 m2/g
Na2O Content = 0.12%

CT 800

Primary Crystal Size = 1.7µm
Specific Surface Area = 0.70 m2/g
Na2O Content = 0.12%

Continuous Ground Calcined Aluminas

A 2-325

Ground Median Size = 5.5µm
Ground Surface Area = 0.60 m²/g
Na2O Content = 0.30%

A 2-325 CR

Ground Median Size = 5.0µm
Ground Surface Area = 0.70 m²/g
Na2O Content = 0.30%

A 35-325

Ground Median Size = 5.5µm
Ground Surface Area = 0.70 m²/g
Na2O Content = 0.11%

A 35-325 CR

Ground Median Size = 4.5µm
Ground Surface Area = 0.70 m²/g
Na2O Content = 0.11%

HVA FG

Ground Median Size = 4.8µm
Ground Surface Area = 0.70 m²/g
Na2O Content = 0.12%

WRA FG

Ground Median Size = 4.0µm
Ground Surface Area = 0.85 m²/g
Na2O Content = 0.12%

CT 800 FG

Ground Median Size = 3.5µm
Ground Surface Area = 0.90 m²/g
Na2O Content = 0.12%

Batch Ground Calcined Aluminas

CT 3000 SG

Ground Median Size = 0.4µm
Ground Surface Area = 7.5 m²/g
Na2O Content = 0.08%

A 1000 SG

Ground Median Size = 0.6µm
Ground Surface Area = 8.2 m²/g
Na2O Content = 0.07%

A 3500 SG

Ground Median Size = 2.3µm
Ground Surface Area = 1.6 m²/g
Na2O Content = 0.07%

CT 3000 SDP

Median Granule Size = 170µm
Ground Median Size = 0.4µm
Ground Surface Area = 7.0 m²/g
Na2O Content = 0.08%7.5

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