Lesson 1/Learning Event 2
Learning Event 2
IDENTIFY BASIC PROCESSING COMPONENTS OF ROCK CRUSHING EQUIPMENT
The amount or degree of processing required to produce suitable aggregate materials for construction purposes
depends upon the nature of raw materials available and the desired characteristics of the end product. Only four
basic functions are to be accomplished in even the largest and most elaborate operations. These functions are:
particle size reduction by crushing,
separation into particle size ranges by screening,
elimination of undesirable materials by washing, and
movement of the material from one place to another.
Special equipment has been designed and is available to accomplish each of these basic functions.
JAW CRUSHERS
The Dalton, single toggle, overhead eccentric type jaw crusher is standard. Although of different sizes, all jaw
crushers in the military supply system are of the same basic design (Figure 1).
FIGURE 1. JAW TYPE CRUSHER
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