Method for drying fluorspar

Abstract

The invention discloses a method for drying fluorite, comprising the following steps that: a wet fluorite is placed into a middle storage hopper and then into an air stream drying device, the small particles material is directly dried by the high-temperature air stream from a combustion chamber, is dedusted by the whirlwind and is sent to the finished product storage hopper, the wet conglobated material which is not dried by the hot air stream completely is dried by the hot wind and freely falls at the same time, the smashed small particles are blown up again to be dried, the dried particles are dedusted by the whirlwind and then are sent to the finished product material. Compared with the prior method for drying the fluorite, the new fluorite air stream drying technique of the invention has small investment, small occupied area, high operating thermal efficiency, low energy consumption, small pollution, low labor intensity of workers, easy control and operation and relatively great technical superiority; therefore, the new fluorite air stream drying technique is a breakthrough of the prior manufacturing technique.

Description

technical field [0001] The invention relates to a fluorite drying method. Background technique [0002] Fluorite drying is an important link in the production process of fluoride salt. The traditional fluorite drying method is based on the rotary kiln. First, the wet fluorite in the silo is sent to the fluorite bin at the kiln head through a belt, and then it is dried by a spiral mixer. It is sent to the rotary kiln, dried by the rotary kiln, cooled by the cooler, and then sent to the crusher through the zipper machine. After crushing and screening, the qualified underscreen material is sent to the finished fluorite bin through the elevator and belt. The traditional fluorite drying method is to use the rotary kiln drying method, which has the following problems in use: (1) The control technology of the rotary kiln is relatively complicated, and it is difficult to control in normal production; (2) The traditional fluorite rotary kiln drying method Due to the use of the rotar...

AI Technical Summary

Problems solved by technology

The traditional fluorite drying method is to use the rotary kiln drying method, which has the following problems in use: (1) The control technology of the rotary kiln is relatively complicated, and it is difficult to control in normal production; (2) The traditional fluorite rotary kiln drying method Due to the use of the rotary kiln, the contact area between the material and the air flow is small, the thermal efficiency is low, and there are many power equipments that need to be started and operated during the production process, and the corresponding energy consumption is relatively high; (3) The use of the rotary kiln determines its occupation. Large area; (4) The traditional fluorite rotary kiln drying process uses a rotary kiln, and the entire process system has more ash points, which increases the flying loss of the process, and because it is easy to cause dust. adverse effects on the health of

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