Pulverizers provide material size reduction services for customers with a variety of goals, such as creatine powder for medicine, creating pulp for paper production, grinding grain for food production, tire-shredding and recycling, breaking down building materials, turning soil, crushing vehicles for scrap, grinding rock samples, and more.
Some of the industries that rely on pulverizers include construction, agriculture, industrial manufacturing, power generation, pharmaceutical products development, landscaping, laboratory, printing, recycling, and material processing.
Pulverizers are generally sorted into three main categories: crushers, impactors, and grinding mills. Crushers are designed to reduce the size of large, dense materials such as rock and stone to gravel or dust. Primarily, crushers are used for size reduction, easy disposal or recycling and to simplify the differentiation of materials.
One of the most common crusher designs is the jaw crusher, which has two jaws, one that is stationary and one that is mobile. Impactors also referred to as impact crushers, are very similar to crushers but differ in the manner of size reduction. Impaction is the force that is transmitted through a collision or by striking one body against another, whereas crushing is the use of pressure created by two opposing forces.
Typically, pulverizers are sorted into three major groups: grinding mills, crushers, and impactors. Note that within these groups are many specific types of pulverizers, defined by their application, such as coal pulverizers, concrete pulverizers, plastic pulverizers, food pulverizers, and plastic pulverizers.
Grinding mills break down materials using friction, which they generate via grinding media. Any number of coarse materials may serve as grinding media, but some, such as brass, bronze, ceramics, flint, and non-sparking lead, are more common than others . The two most utilized types of grinding mills are hammer mills and ball mills.
Hammer mills are primarily used on farms, where they grind chaff and grain using vertically revolving hammers that are encased in steel or stainless steel.
Ball mills, on the other hand, grind material using steel rods, steel balls, or similar media. The mills themselves are quite simple, consisting of a horizontally-mounted cylinder rotating and liners that protect the cylinder from wear and tear. To work, users place the media inside the cylinder, where it is tossed or tumbled.
Tube mills are so similar to ball mills that people sometimes use their names interchangeably. Tube mills also consist of a revolving cylinder and liners, but they are typically larger and use media that is mixed with water to achieve fine pulverization. This media feeds in at one end and is passed out the other as slurry.
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