Typical Set-up & Sizes of Stone Crushers
There are large variations in the types of stone crusher setup across the country depending on geographical locations, type of demand for crushed products, closeness to urban areas, type of raw material, availability of plant and machinery locally etc. Primarily the stone crusher industry sector could be divided in three categories small, medium & large. The typical characteristics of each category of stone crushers are briefly discussed below.
Small Size Stone Crushers
There are different types of small crushers in various states with a production capacity ranging from 3 to 25 TPH. Typically, the units having only one Jaw type crusher used as primary or secondary crusher along with one or maximum 2 screens are grouped as small stone crushers.
Medium Size Crushers
Typically those crushers having than one crusher i.e., one primary and one secondary or one/two primary & two secondary crushers along with one or more vibratory screens are categorized as medium size crushers. The mined stones are transported mostly by trucks/dumpers and unloaded in to elevated stone wells. The stones are fed by gravity to primary crushers. The Crushed stones are conveyed to vibratory screens. The screened products of various sizes are conveyed to stock piles by belt conveyors. The oversize is returned to secondary crushers for further crushing and back to the vibratory screen. Such type of medium type crushers has a production capacity in the range of 25 – 100 TPH. These types of crushers are mostly located near to the bigger cities and in the vicinity of major construction projects such as Highways, Canals, and Dams etc.
Stone crushing process
Big size stones are transferred to primary stone crusher through Vibrating Feeder
from hopper for first crushing, and then the crushed materials are transferred to impact crusher through belt conveyor for secondary crushing. The crushed materials will be transferred to the Vibrating Screen
, and separated to different sizes. Those aggregate with suitable size will be transferred to the final product pile and those with unsuitable size will be transferred to the impact crusher for re-crushing. These forms a closed circuit manifold cycles. The sizes of final products will be graded and separated according to customers’ requirements, and the deducted will be attached for the sake of environment protection.