I. On potassium nitrate:1. Potassium nitrate is a compound fertilizer of nitrogen and potassium, of which nitrogen is 13.5 and potassium is 46. Potassium nitrate is easy to move in the soil and is suitable for Topdressing of crops, especially in the middle and late stages.
Whether the proportion of materials or the amount of water in evaporated water has a certain effect on the purity and yield of potassium nitrate. Then there is another kind of cooling crystallization temperature, which is called cooling crystallization temperature.
According to the analysis, "from the end of last year to now, nitrogen, phosphorus and compound fertilizers have increased in varying degrees, with the increase ranging from 500-700 yuan / ton."
According to the introduction of general manager Liu of Tongli Chemical Co., Ltd., the fertilizers as excellent potassium sources are potassium nitrate, potassium sulfate, potassium dihydrogen phosphate and potassium chloride, with the following differences:
Because potassium nitrate does not contain chloride ions, it has been widely used in agriculture as potassium fertilizer. The application prospect of potassium nitrate is also promising. Although its production cost is on the high side, its advantage is incomparable with that of potassium chloride.
In our country, potassium nitrate manufacturers mainly use the double decomposition method of ammonium nitrate and potassium chloride to produce potassium nitrate. However, the potassium nitrate produced directly usually contains many impurities, which is only suitable for agricultural use.
Now, as an important oxidant, potassium nitrate is widely used in various fields. With the rising price of potassium nitrate, many potassium nitrate manufacturers are also engaged in new process research.
Precautions for potassium nitrate operation: close operation and strengthen ventilation. It is necessary for operators to pass special training and strictly abide by the operating procedures.
1. Potassium nitrate: it contains 13.5% of nitrate nitrogen and 46% of potassium. It is a chemical neutral and physiological neutral fertilizer with good water solubility. Long term application will not lead to soil acidification.
Potassium nitrate is not only an important industrial raw material, but also an important non chloride nitrogen potassium compound fertilizer. About 75% of the world's potassium nitrate is used in agricultural fertilizer, 10% in TV glass shell and special glass, and the rest in other industries.