Method for drying strontium chloride hexahydrate

Abstract

The invention provides a method and device for drying strontium chloride hexahydrate. Strontium chloride hexahydrate sequentially passes through a plurality of fluidizing cavities of a fluidizing bed, and hot air at the temperature of 50-100 DEG C enters into the fluidizing bed from a last fluidizing cavity. The hot air reversely and sequentially enters into each fluidizing cavity to carry out counter-current drying on materials in the fluidizing cavity. By adopting the method and device provided by the invention, the drying process is easy to control. The air used for drying the materials iscontacted with the materials for multiple times, and the utilization rate of heat energy is high. The air used for drying is fully contacted with the materials, thus a product is uniformly dried, andthe phenomenon that crystal water is removed as partial strontium chloride hexahydrate is excessively dried can be prevented.

Description

technical field [0001] The invention relates to the production of strontium chloride hexahydrate, in particular to a multistage drying method for strontium chloride hexahydrate and multistage air circulation fluidized bed equipment for drying strontium chloride hexahydrate. Background technique [0002] At present, the drying of aqueous strontium chloride hexahydrate is usually carried out by vibrating fluidized bed. Since strontium chloride hexahydrate will release part of the crystallization water at 60°C, its drying is difficult to control. Existing drying of strontium chloride hexahydrate uses a large amount of low-temperature air to contact the material once in the fluidized bed. Since the dry air only contacts the material once, the consumption of air is large and the energy consumption is high. At the same time, when the temperature of the drying air is low, the product will be insufficiently dried; when the temperature of the drying air is high, the product will be...

AI Technical Summary

Problems solved by technology

When this equipment is used to dry materials, the air used for drying materials only contacts the materials once and then is discharged from the equipment, so the utilization rate of heat energy is low and the energy loss is large.

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