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AODD Pumps

Solid-Body Plastic AODD Pumps Deliver the Operational Ability for Abrasive Media

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Color inks, for example, are made with a solvent that is generally produced from petroleum distillates, linseed oil or soybean oil, while the pigments are made up of various dyes. Titanium dioxide can be used to adjust the color characteristics of inks. All types of inks may also contain additives such as lubricants, waxes, surfactants and drying agents.

Lime Slurry — the Constant Risk of Plating Out

By definition, lime slurry is an alkali formed of a suspension of calcium hydroxide in water. It has a variety of uses in industrial, municipal and environmental applications, such as metals precipitation, odor control, sludge stabilization, lime softening and pH adjustment but also as a fertiliser. While it is easy to pump by itself, when lime slurry reacts with water a condition known as “plating out” may occur during which the lime precipitates from the water.

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Consequently, all surfaces that come in contact with the lime slurry are in danger of being coated and caked with lime, including the pumps that are used to transfer it. This behaviour can cause certain types of pumps to malfunction or even damage process components. Lime slurries can also contain additional abrasive solids, such as grit and pebbles, that can wear down a pump’s internal components and lessen its efficiency and reliability.

Ceramic Mass/Glaze — Finishingfor the Masses

Mass finishing is a common method of metals finishing that cleans, deburrs and polishes the treated surface, for witch an abrasive ceramic media is used during the finishing process. Glaze is defined as “a layer or coating of a vitreous substance that has been fused to a ceramic object through firing” ad is a common surface treatment for ceramics.

Before application, glazes can be abrasive, as they consist of miniscule shards of glass-forming silica in combination with a metal-oxide mixture consisting of sodium, potassium and calcium, which allow the glaze to melt; aluminium, which stiffens the glaze and prevents it from running; colorants such as iron oxide, copper carbonate or cobalt carbonate; and opacifiers like zirconium oxide and tin oxide. The handling of large quantities of finishing or glaze liquids is among the most demanding processes for a pump....

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