Research on extraction of potassium nitrate manufacturer

now, as important oxidant potassium nitrate is widely used in various fields, with the rising price of potassium nitrate, potassium nitrate of many manufacturers, is also in the study of new technology. Extraction as a kind of reasonable and effective methods of production are important to each big manufacturer of potassium nitrate.

industrial potassium nitrate manufacturers usually by reforming process, on the double decomposition method and ion exchange method to produce potassium nitrate. Potassium nitrate production process economic benefit is low; Double decomposition method to make the equipment corrosion is serious, the work is not easy to control; Ion exchange method, energy consumption is larger. The current methods which are more desirable is to the preparation of potassium nitrate with potassium chloride and nitrate, mother liquor by organic solvent extraction, this is the research direction of potassium nitrate manufacturers.

after many times of experiment, the potassium nitrate factory managed to find hydrochloric acid and nitric acid can be extracted organic solvent & ndash; The TBP kerosene system. Experiment after three times, the TBP kerosene successfully extracted the nitric acid in the mother liquor completely, after extraction of nitric acid mainly containing hydrochloric acid and potassium in the mother liquor, then can it by using the method of distillation or extraction separation, potash again returned to the reactor. To separate the TBP kerosene with nitric acid, can use water for extraction, part of the dilute nitric acid is returned to the reactor, is used to dissolve crude potassium chloride. The whole process is greatly reduced the production cost of potassium nitrate manufacturers.

process, control of the temperature of the solution for certain, considering the solubility of each product as well as the content, the whole experiment and further study. This method separation effect is good, can be repeated use of raw materials, is a manufacturer of potassium nitrate can choose a kind of new production technology.

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