METHOD FOR GRANULATING CALCIUM CHLORIDE HYDRATE AND GRANULATION APPARATUS

摘要

In a method for granulating a calcium chloride hydrate wherein seed particles are fluidized in a fluid bed (1) and an aqueous solution of calcium chloride is sprayed from a spray nozzle (8) to the fluidized particles to thereby form granules of calcium chloride hydrate, the partial pressure of water in the fluid bed (1) is adjusted, by controlling a moisture content adjusting device (7) for a fluidizing gas and a concentration adjusting device (9) for an aqueous solution of calcium chloride at least based on measured values from a temperatire sensor T1 for measuring a temperature in the fluid bed (1) and a humidity sensor H3 for measuring a humidity of the discharged gas from the fluid bed (1), so as for the vapor pressure of calcium chloride in the fluid bed (1)to have a value equal to that in the case of a calcium chloride hydrate containing a predetermined number of water molecule at a temperature in the fluid bed (1).