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Energy Efficiency Of Jaw Crusher

It is well known and taken for granted that the efficiency of energy use by comminution (i.e. breaking, crushing, grinding) equipment is very low, typically less than 10%. 

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For a selected optimised case an attempt was made to simulate the jaw crusher using a commercial software for discrete element modelling, after first simulating single particle breakage using this software.

  • Energy efficiency is defined as function of area increment for comminution processes.
  • Simulation procedure comparison for crushing and grinding processes is given.
  • Experimental setup for energy efficiency measurements based on area increment.

Due to the inefficiency of the jaw crushing machine, whose no-load power consumption is between 40 and 50% of its rated power, the optimal switching control technique is shown to be a better candidate in reducing both energy cost and consumption of the jaw crushing station.

The benefit of having an ore pass with a big storage capacity is shown to be of great importance in achieving more energy cost reduction of the primary jaw crushing station while improving the switching frequency profile associated with the switching controller.

 

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