For the sake of fairness, the crusher does not often hit the title. Hidden in some dark caves, or along a tires on the pit and the cages arranged, the crusher is difficult with the new truck fleet or drill the higher visibility of the competition. However, an effective crusher is a key component of any mineral production system, paving the way for all subsequent extraction techniques. The crusher fell and the mine marked the time.

One of the basic processes of mineral recovery is that as the size decreases, the rock crushing absorbs a gradual increase in energy input. Even if the primary crushing is energy-intensive, the optimal relationship between blasting crushing, crushing capacity and concentrator yield varies with the change of ore body characteristics over time.

Over time, the number of different broken concepts has expanded, and today’s mining operators have a wider range of options than their predecessors. Conventional jaw crushers and rotary machines are still predominantly in primary crushing applications, and of course the secondary reduction options now include techniques such as high pressure grinding rolls as alternatives to tapered or other crushers. The characteristics required for the final product usually determine the choice of crusher technology, vertical axis impact machine has been in some areas of application to enter the market.

Reliability is clearly the name of the game; in addition to routine maintenance and replacement of wear parts, there is no other crushing capacity of the operation can not. It is heavy at the peak, regardless of whether the machine involved is fixed, semi-moving or fully able to be manipulated to any desired place. In fact, the introduction of successful mobile crushing equipment has completely changed the way some mines, especially quarries, are designed and operated. As with many aspects of today’s mining equipment supply chain, relatively few manufacturers supply a large number of crushing equipment markets. Each offering a comprehensive system whose design improvements are focused on reducing energy use while maintaining the output characteristics of the unit to meet the requirements of the post-processing phase.

New Mines Need New Crushers
With mine-development programs seemingly little affected by the global economic

Mobility provides cost advantages
The concept of the crusher’s mobility can be traced back to 30 years or longer, and it is sometimes simpler and more cost-effective to push crushers into rocks rather than others. Nonetheless, “mobility” can represent something different in different situations, simply because the crusher is described as moving or semi-moving, and does not mean that it will be moved on a regular basis. The layout of the crusher means that the wheel loader that feeds the rock into the hopper does not require a table edge or a ramp, so the machine can move quickly without special spot preparation, Hazemag points out. The crusher’s feed conveyor can also be used as the main screen, allowing less than 120 mm of material to completely bypass the crusher. The broken rock is removed by a conveyor for secondary crushing for the correct sizing of the cement plant feed.

Optimized crusher control
Regardless of the type and configuration, the crusher has to perform very difficult tasks, and therefore will encounter significant wear and tear. Over time, the consistent output needs to compensate for this wear until the wear parts need to be replaced and the equipment can be restored to its original set stage.

The idea, of course, is to keep the crusher in the best performance during each wear cycle. Researchers at the Chalms University of Technology in Sweden have designed a control system that can achieve this. The authors from the university presented four papers on various aspects of crusher control and crushing performance at the “Comminutes” 10 conference held in Cape Town in April this year, and recently presented other papers in other places.

However, the use of frequency converters now means that the speed of the crusher can be continuously adjusted, and the input and the data obtained from the source

Obviously, the choice of crusher and mine engineering design are closely linked, whether it is open-air or underground, and the required crushing capacity. Perhaps not long ago, with the rising cost of tires and fuel, full mobile crushing would be a serious choice.