Patent ID: 6296790
Filing Date: 2001-10-02
Classification: B01J,C01F,C01P,Y02P

Abstract:
A method of producing magnesium chloride granules with a particle size in the range from 0.4 to 3.0 mm suitable for fluidization, air drying and chlorinating to anhydrous state, the method comprising preparing a feed solution of MgCl.sub.2 having a 30-55% by weight of MgCl.sub.2, feeding the solution and keeping it at a temperature in the range of 120-200.degree. C. from a feeding tank to nozzles, atomizing the feed solution into a bed of already dried particles by pressure or compressed air, passing preheated air upwardly through the bed, maintaining the dried particles in a fluidizing state and a bed temperature between 100-170.degree. C., continuously recovering entrained particles in a cyclone, discharging magnesium chloride particles continuously, classifying discharged material and recycling any undersized fraction and crushed oversize fraction together with fines from the cyclone to the bed for further granulation.