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Why Ceramic Is the Ideal Material for Slurry Pump Components?

Jul. 06, 2021

In general, ceramic materials have extremely high hardness, high melting points, wear resistance, oxidation resistance and corrosion resistance, and maintain these properties at elevated temperatures. Ceramics are chemically inert and can withstand most solvents, acids and alkaline solutions.

These properties often make ceramics an ideal material of construction for slurry pump spare parts, such as volute, Casing, liner and impeller. Ceramics can be manufactured to tight tolerances and clearances of 2 to 5 microns. The tight clearances make the pump virtually leak-free, eliminating the need for external seals. Ceramics also typically have minimal friction. Corrosion and wear resistance are influential factors in the selection of ceramic pump materials and components.

Ceramic properties

Typically, ceramic materials make up pump components such as bushings, plungers, cylinder walls, balls and impellers that come into contact with abrasive or corrosive media (e.g., liquids, slurries, hot gases). Sliding parts within the pump drive section also benefit from low friction, tight tolerances, and the ability to run dry or without lubrication. Ceramics are brittle, low-toughness materials, so plastic or metal housings and backings are used behind ceramic components to provide support and durability.

Slurry Pump Spare Parts- Casing

Slurry Pump Spare Parts Casing

Pump design must be adjusted for ceramic material properties such as thermal expansion, brittleness, or fabrication. For example, blind and threaded bores are not suitable for brittle materials.

For instance, the ceramic (SIC) sump pumps from Yijia. This series of ceramic (SIC) sump pumps are vertical centrifugal slurry pumps. They are immersed in liquid and adopt single pump casing structure connected by cassette. They have wide flow passage and ceramic lining. They have good abrasion resistance, corrosion resistance and high reliability. They are suitable for conveying abrasive and high concentration slurry. Without shaft seal and shaft seal water, it can work normally under the condition of insufficient suction. Welcome to contact us today or request a quote.

Ceramic pumps are highly valued by engineers in the pharmaceutical, food and beverage, medical and cosmetic industries for their cleanability, durability and precision filling. They are an important process system component in high-volume dispensing environments. Ceramic filling pumps excel at metering small to medium volume sterile liquids because ceramics are chemically inert and biocompatible.

SIC Ceramic Slurry Pump Parts Impeller

SIC Ceramic Slurry Pump Parts Impeller

The low wear rate of ceramics means that media are typically virtually immune to pump contamination. Ceramic plungers and components provide a long pump life, which allows filling pumps to operate in high-volume production plants for up to 10 years with minimal maintenance.

Ceramic filling pumps are typically seal-less and can be run dry without damage. They may be well suited for in-situ cleaning and in-situ disinfection processes, as ceramics are unaffected by high temperatures and harsh chemicals.

Ceramic pump material selection

Common ceramic pump materials include alumina (alumina), zirconia (zirconia), alumina-zirconia, sapphire (single crystal alumina), quartz, fused silica, silicon nitride and silicon carbide. The specific ceramic chosen depends on the medium being pumped and the temperature of the medium, as well as the material's toughness, refractoriness, hardness, strength, wear resistance and corrosion resistance. While all common ceramic pump materials are harder than stainless steel, the hardness varies widely between ceramic materials.

Ceramic pumps and ceramic pump components offer advantages over their metal and plastic counterparts. They also have some limitations that may limit their widespread use, including cost, manufacturing, design adjustments and brittleness. However, ceramic pumps are the best choice for certain corrosive and abrasive applications, as well as for high volume, precision filling end uses.

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