B - Operations – Transporting – 03 – B
Patent
B - Operations, Transporting
03
B
209/3
B03B 1/00 (2006.01) B03B 1/02 (2006.01) B03B 4/00 (2006.01) B07B 9/00 (2006.01) B07B 9/02 (2006.01) B07B 11/02 (2006.01)
Patent
CA 1197812
ABSTRACT OF THE DISCLOSURE A procedure for classifying a crystal mixture or for concen- trating rocks or mixed crystals in particle form is provided herein. The procedure involves capturing the particles in a gas flow for the purpose of separating particles of different size and weight by means of natural or artificial gravity. The particles are heated to a temperature so high that a difference sufficient for separation is obtained in volume and/or weight between different particles. For spodumene, quartz and feldspar this temperature is about 1000 C. This is advantageous in that the pro- cedure can take place in a dry environment, the use of chemicals is avoided and grinding becomes simpler.
420549
Dahlberg Kjell A.m.
Valtakari Urho V.
Borden Ladner Gervais Llp
Oy Partek Ab
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