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US 6,296,790 B1Granted
Method of producing magnesium chloride granules
AssigneeNorsk Hydro ASA
InventorsBirger Langseth, Arne Bent Frigstad, Leif K{dot over (a)}re Grønstad
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AssigneeNorsk Hydro ASA
InventorsBirger Langseth, Arne Bent Frigstad, Leif K{dot over (a)}re Grønstad
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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, by preparing a feed solution of MgCl2 having a 30-55% by weight of MgCl2, feeding the solution and keeping it at high temperatures from the feeding tank to the nozzles, atomisation of the feed solution into the bed of already dried particles by pressure or compressed air, passing preheated air upwardly through the bed, maintaining the particles in a fluidizing state and a bed temperature between 100-170° C., continuously recovering entrained particles in a cyclone, discharging magnesium chloride particles continuously, classifying discharged material and recycling of any undersized fraction and crushed oversize fraction together with fines from the cyclone to the fluid bed for further granulation.
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 MgCl2 having a 30-55% by weight of MgCl2, feeding the solution and keeping it at a temperature in the range of 120-200° 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° 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.
Dependencies are inferred from the claim text.