Intelligent combination

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

Quelle/Source: HAVER NIAGARA GmbH

1 Schematic showing the classifying process

Quelle/Source: HAVER NIAGARA GmbH

2 Functional principle of the HAVER FINE-LINE

Quelle/Source: HAVER NIAGARA GmbH

3 Machine view of the HAVER FINE-LINE HD 1800*3750

Quelle/Source: HAVER NIAGARA GmbH

4 Particle size distribution of the silica sand in the RRSB grid

Quelle/Source: HAVER NIAGARA GmbH

5 Particle shape distribution (cubicity L/W) of the silica sand

Quelle/Source: HAVER NIAGARA GmbH

6 Particle shape distribution (circularity C) of the silica sand

Quelle/Source: HAVER NIAGARA GmbH

7 HAVER FINE-LINE HE 500*1250 (research centre model)

Quelle/Source: HAVER NIAGARA GmbH

8 Influence of the wire diameter on the unblocked open area of the screen cloth

Quelle/Source: HAVER NIAGARA GmbH

9 Flow sheet of the test plant

Quelle/Source: HAVER NIAGARA GmbH

10 Influence of the specific screening rate on the misplaced undersize

Quelle/Source: HAVER NIAGARA GmbH

11 Influence of the specific screening rate on the misplaced oversize

Quelle/Source: HAVER NIAGARA GmbH

12 Influence of the wire diameter on the misplaced undersize

Quelle/Source: HAVER NIAGARA GmbH

13 Influence of screen tensioning and dust extraction on the misplaced undersize

Quelle/Source: HAVER NIAGARA GmbH

Particle size distribution of typical FINE LINE feed material

Quelle/Source: HAVER NIAGARA GmbH

Summary: The following paper addresses the problems of dry mechanical screen sizing of ultrafine silica sand. These problems are examined in detail following some basic remarks on the process sequence, evaluation of a screening process and the sizing equipment available for this purpose.

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 tobacco industry as well as the recovery of recyclables in recycling processes, mixes of particles of different sizes are obtained. It is the task of the processing equipment to produce intermediate or end-products from these particle mixes. The material composition and physical properties of these products, especially with regard to their dispersity, must meet certain requirements. Depending on the...