Screening or sorting

Field-oriented modifications and problem-based design as a precondition for optimum solutions

NSO III-1.3/3.5 multideck screen, closed model

NSO-II-1.5/4.0 screen, open model

ULA 850/50-1000 screen, with splash hood

Summary: Whether you mean the fractionization of particles into individual particle size classes with different particle size ranges, or simply a separation or sorting into individual components of different types of material or properties – the technologies used for this are often the same, or at least similar. Theoretical calculations e. g. based on acceleration forces, etc. can only head you in the general direction, generally leaving you with the prospect of long series of tests, the results of which have to be compared based on the application of practical possibilities and modifications, to find the optimum solution for the respective problem.

1 Screening and Sizing

To meet the various requirements, different principles are available in screening systems. Matched to the concrete application, these make provision for the ever different product-specific properties based on, for example, the possible acceleration forces and screen motion. In addition, they differ to meet the requirements of the various industrial sectors. For example, the screen sizing of abrasive grades to meet standards, in which usually high accelerations for low throughput rates are required, to separate the products even at low mesh widths to around 45 -30 µm. Or...

Issue 04/2016

Intelligent combination

Ultrafine sizing of silica sand with the HAVER FINE-LINE screen

1?Introduction In the extraction and processing of solid mineral raw materials, the production of synthetic raw and intermediate products, the processing of products in the foodstuffs, drinks and...

Issue 01-02/2010

Fine and very fine screening

Throw screening from the beginning of the 20th century to the present demonstrated by the example of directly excited throw screening machines

1. Throw screening machines directly excited by means of bumpers or impactor bars The development of bumper-type screens [1], which had begun in America at the beginning of the 20th century, was...

Issue 03/2013

High capacity

Improved grinding efficiency with the Derrick® Stack Sizer® Screen

1?Introduction Screening is the process of separating particles by size and fine screening typically refers to separations in the range of 10?mm (3/8?inch) to 38?µm (400?mesh). Fine screening, wet...

Issue 07-08/2019 Selective

Advances in screening technology in the mining sector

1? Introduction In the mining sector various classification methods are in use. The two most important processes for the separation of specific particle sizes are the hydrocyclone and screen...

Issue 07-08/2011

Ultrafine screening – easy and good

Handling, operating and maintenance costs, environmental friendliness and fast adaptability to changing process parameters are all key criteria in the decision to buy a new screening machine. It is...