Efficient drying device for powdered rock phosphate pellet production

Abstract

The invention discloses an efficient drying device for powdered rock phosphate pellet production. The efficient drying device for powdered rock phosphate pellet production comprises a feeding mechanism, a drying tower body, a blanking mechanism and a heating mechanism, wherein the drying tower body comprises a feeding section, a drying section and a discharging section which are sequentially arranged from top to bottom; multiple rows of guide plates are installed in the drying section; the discharging section comprises multiple blanking conical hoppers; the heating mechanism comprises an air inlet chamber, an air outlet chamber and a hot blast stove; multiple rows of heating pipes are installed on the drying section and communicate with the air inlet chamber and the air outlet chamber correspondingly; the blanking mechanism comprises material supporting plates, upper supporting plate beams and lower supporting plate beams; the material supporting plates are installed above the upper supporting plate beams at intervals; 2 to 4 flexible connecting pieces are installed between each upper supporting plate beam and a bearing bottom plate; a material guiding cone and a discharging mechanism are installed below the blanking mechanism; and a driving mechanism is installed on one side of the blanking mechanism. The device can achieve continuous feeding, drying, blanking and dischargingdrying operation, and has the advantages of being high in drying efficiency, remarkable in drying effect, stable in operation and the like.

Description

technical field [0001] The invention belongs to the technical field of phosphorus chemical industry, and in particular relates to a high-efficiency drying device for producing phosphate rock powder pellets. Background technique [0002] Yellow phosphorus is an important chemical raw material. Various phosphides and phosphates produced from it are of various varieties and have a wide range of uses. The production of phosphoric acid from yellow phosphorus is a kind of phosphoric acid production process, that is, thermal phosphoric acid. According to the statistics of resource reserves, the national reserves of phosphate rock resources are about 1.89 billion tons, and the basic reserves are 3.902 billion tons, which are mainly distributed in five provinces including Yunnan, Guizhou, Hubei, Sichuan and Hunan. With W(P 2 o 5 ) measurement, the overall grade of phosphate rock resources in my country is low, and more than 90% of the phosphate rock is P 2 Medium and low-grade or...

AI Technical Summary

Problems solved by technology

With the continuous and rapid development of phosphorus chemical industry, the mining of high-grade phosphate rock has been continuously intensified, coupled with the massive mining of phosphate rock resources, especially the widespread use of the mining method of abandoning the poor and mining for the rich and the lack of advanced mining technology, resulting in of waste, making P 2 o 5 The rich ore with a mass fraction of more than 30% is rapidly depleted, and its rapid consumption has highlighted the crisis of phosphate rock. At present, high-grade phosphate rock for yellow phosphorus, especially weathered phosphate rock, will produce a large amount of fine ore during processing and use. The rate is usually about 20%, and some are as high as 50%. This part of phosphate rock powder must be prepared into pellets before it can be used to produce yellow phosphorus.

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