Fast and flexible

Laser-assisted sorting of minerals

Summary: For determination of the composition of minerals, at the Fraunhofer Institute for Laser Technology a laser method was developed that can be used for the fast online analysis of a wide range of raw materials. The non-contact multi-element analysis with which a direct sorting criterion can be determined, also enables automatic and economic single-particle sorting of rocks and ores. On a demonstration rig, an efficient reduction of the MgO content of limestone production samples could be realized.

1 Introduction

For efficient exploitation of natural raw material deposits and high-quality processing, for many, especially complexly structured and inhomogeneous deposits, a sorting of the extracted raw materials is required. The sorting processes used in the processing of minerals separate the material to be sorted based on one sorting criterion, which only indirectly correlates with the chemical composition of the material. For example, ores are separated according to their density or their surface wettability. For a sorting that actually separates the material directly according to the...

Related articles:

Issue 11/12/2008

Fritsch Laser-Particle Measurement Analysette 22

25 Years Laser-Technology

In 1985 FRITSCH revolutionised measurement precision by introducing laser diffraction in a convergent laser beam with the patented FRITSCH measurement process. The advantage of this patented FRITSCH...

Issue 04/2014

Measurement of Particle Shape and Size with Dynamic Image Analysis

The new ANALYSETTE 28 ImageSizer (Fig. 1) is suitable for analysis of particle shape and size of dry, free-flowing powders and bulk solids in a measuring range from 20 µm to 20 mm. Via the optical...

Issue 06/2017

Precise separating Sensor-based sorting of quartz using multi-channel laser detection

Introduction The multi-channel laser detection system patented by TOMRA measures the reflection, absorption and fluorescence of multiple lasers of differing wavelengths simultaneously and congruently...

Issue 04 /2017

Laser particle sizing at the push of a button

With the new FRITSCH Laser Particle Sizer ­ANALYSETTE 22 NanoTec particle measurement becomes a simple matter, for professionals as well as for any employee – in production and quality control or in...

Issue 10/2017

Software update for computerized particle analysis

HAVER CpaServ software is the “artificial intelligence” for CPA particle measurement technology. The user interface allows a wide range of measurement procedures to be easily defined and initiated....