316 titanium fluidized bed drying-cooling process applied to potassium salt

Abstract

The invention discloses a 316 titanium fluidized bed drying-cooling process applied to potassium salt. The 316 titanium fluidized bed drying-cooling process comprises the following steps: (1) primary drying: injecting hot flue gas into a drying machine till cold air in the drying machine is exhausted, feeding the wet material of potassium salt to the drying machine, spraying an anti-caking agent in liquid form to the drying machine at a spraying rate of 30 min / L by utilizing a spraying gun, waiting for the sufficient mixing of the wet material of potassium salt and the anti-caking agent in the drying machine, and drying to form first potassium salt dust; (2) secondary drying; (3) cooling: mixing second potassium salt dust with the first potassium salt dust, feeding the mixture to a fluidized bed for cooling so as to obtain a finished product of potassium salt and second off gas, and recovering the second tail gas by utilizing a bag-type dust collector, so that only the finished product of potassium salt is obtained; and (4) emptying. The 316 titanium fluidized bed drying-cooling process applied to potassium salt disclosed by the invention has the advantages that the drying time is short and the particle size of the finished product is small, and can be widely applied to the technical field of the drying of potassium salt.

Description

technical field [0001] The invention relates to the technical field of drying of potassium salts, more specifically, the invention relates to a 316 titanium fluidized bed drying and cooling process applied to potassium salts. Background technique [0002] Potash is the largest product used in agriculture, 95% of the world's potash products are used as potash fertilizers, and the other 5% are used as industrial raw materials. According to the statistics of the US Geological Survey, in 2012, the world's proven potash reserves were 8.3 billion tons (100 million K20), and the reserve base was 16.7 billion tons, which can be exploited by the world for more than 300 years. [0003] In the production process of potassium salt, drying and cooling is an essential step. In the prior art, during the drying and cooling process of the potassium salt, there are problems such as severe agglomeration of the finished potassium salt product, scabbing of the fluidized bed, long drying time, a...

AI Technical Summary

Problems solved by technology

In the prior art, during the drying and cooling process of potassium salt, there are problems such as severe agglomeration of the finished potassium salt product, scarring of the fluidized bed, long drying time, and high energy consumption.

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