Lime is a generic term for some types of mineral compounds that have a calcium base. Most types of lime are calcium oxides, calcium hydroxides, or calcium carbonates. Typically, lime is mined in nature in the calcium carbonate form (CaCo3), and is converted into calcium hydroxide (its liquid form) or calcium carbonate (its crystalline solid form) straight through an intense heating process. The compounds produced by the heating process are alkaline (or, basic) and quite caustic. The causticity of these calcium compounds means they can be corrosive to the handling materials used in assorted industries.
After treatment, lime slurry can be used in many dissimilar industries, such as chemical treatment and wastewater treatment applications. It is a important combination for controlling the Ph of a substance (essentially, how acidic or basic a clarification or combination is), as well as for other cleaning and processing purposes. Lime is an extremely abrasive and caustic compound, and it has the potential to do great damage to machine components, gears, or even the valves themselves. Of course, keeping all machine parts in good working order and well lubricated is imperative to the prolonged functioning of the lime slurry handling equipment. However, selecting the right type of valve for such an application is important, too.
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Why use pinch valves with lime slurry applications?
Pinch valves are better engineered for tough slurry applications. Part of the suspect they are classic is integral to the build of the valves. Inside each valves is an elastomer sleeve containing a round interior. The inside of this sleeve has no crevices or indentations to allow slurry compounds to gather and dry into hard, sharp materials. If a pinch valve sleeve is damaged by slurry applications, it can normally be supplanted very legitimately and inexpensively. Also, the conclusion patterns of these sleeves allow lime slurry throttle operate to be as correct as possible.
Pinch valves can be operated by hand wheels, pneumatic actuators, hydraulic actuators or electrical actuators. Often affordable, pinch valves also can be legitimately replaced. More importantly, there exists a wide variety of pinch valve sleeves from which to pick that will suit all kinds of chemical applications. These pinch valve sleeves are made of a variety of elastomers that work in dissimilar climatic characteristic ranges and are able to handle dissimilar levels of causticity.
The valve sleeve is, in fact, another important suspect why pinch valves are ideal for lime slurry applications. When the valve is closed, the flexible rubber sleeve will stretch. Lime buildup chips off as a succeed of the stretching and flexing; meanwhile, the velocity of fluid against the conclusion valve helps wash off further debris. The chemical and wastewater treatment industries often define these valves as "self-cleaning," a characteristic that further reduces machine downtime.
Because of its causticity and texture, lime slurry is a tough application that can clog a piping system. Pinch valves are well superior for these tough applications because they resist clogging - their lack of a packing box and plane interior building lessen the chances of clogging considerably. The hot, caustic, jagged-edged lime slurry can also be accommodated by a pinch valve sleeve constructed of an elastomer material superior to that exact application. This extends the life of the valve sleeve, promoting processing law security and efficiency.
Pinch Valves & Lime - How Pinch Valve Holds Up in the Chemical & Wastewater rehabilitation Industries