Method for classifying a crystal mixture or for enriching types of rock or mixed crystals in particle form

摘要

The invention relates to a method for classifying a crystal mixture or for enriching types of rock or mixed crystals in particle form by collecting the particles in a stream of gas for the purpose of separating particles of different size and/or weight by natural or artificial gravitation. According to the invention, the particles are heated to such a high temperature that a difference in volume and/or weight, sufficient for separation, of the different particles is produced. For spodumen, quartz and feldspar, this temperature is about 1000 DEG C. <IMAGE>