is an important constituent for the construction industry. For
constructing buildings and other infrastructures river sand is generally
preferred. However sand mining from the river bed and its transportation
is not an easy task. Sand making machine fulfill the demands of the
construction industry in a substantial manner.
Just like stone crushing plants, sand making machines too consists of
feeding hopper, rotopactor, sand screen, conveyors, elevators,
electrical prime movers and controls, etc. Rotopactors of varying sizes
are used to crush stone from which sand is obtained. Rotopactars
manufactures sand from grit. Rotorpactar disc and annular ring are
mainly responsible for giving efficient results.
The stone particles are ejected from the rotor due to centrifugal force
at a particular angle, which strikes with an annular ring and diverted
in circular path. The kinetic energy of the particles makes it move in a
designated path. Later the bigger particles break into small pieces.
These small particles roles around while moving in a circular path. The
residual kinetic energy is utilized in giving good surface texture of
the particle. The edges are rounded and surface became smooth. In this
process dust is emitted which creates pollution. To avoid this small
amount of water is sprinkled.
The sand so produced are utilized in the construction of buildings,
pavements, streets, roads etc.