A crusher with a pre-screening unit saves resources, reduces energy consumption by 30–40% and extends the service life. When making your choice, take into account the type of raw material and the production capacity; do not simply go for the lowest price, and check the after-sales service.
A crusher with a pre-screen is a specialised piece of equipment that first screens out the fine particles of the raw material and then crushes only the required larger pieces, saving resources and extending the machine’s service life; the correct choice depends on the characteristics of the raw material and the required processing outcome.
This crusher combines a screen and a crushing mechanism within a single housing; the screen is situated at the entrance to the crushing zone, and automatically separates the feed stream into finished fine particles and material requiring further processing; this design prevents excessive strain on the crushing elements.
Firstly, energy consumption is reduced by 30–40% as there is no need to process fractions that are already of the correct size; secondly, wear on the crushing plates and hammers is reduced; furthermore, the output immediately consists of raw material with a uniform particle size, requiring no further sorting.
First, determine the type of raw material to be processed: hard rock, ore or soft materials; then specify the required throughput and the maximum size of the feed material; also take note of the adjustable output particle size and the type of drive used in the unit.
You should not choose a model solely on the basis of its low price without taking into account the characteristics of your raw materials; do not forget to check that after-sales service and spare parts are available; and do not overestimate the required capacity, as this will lead to unnecessary costs in terms of both purchase and running costs.
