Method for improving the hardness of granular sodium nitrate
A sodium nitrate and hardness technology, which is applied in the preparation and application of nitrate fertilizers and alkali metal nitrates, can solve the problems of unstable handling, large amounts of powder, high empty shell rate, etc., and achieve low cost and low energy consumption in the production process Small, efficient effect
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Embodiment 1
[0017] Example 1: After adding 1.4% waste salt, the sodium nitrate content in the product is 97.78%, the sodium chloride content is 1.26%, the sodium sulfate content is 0.83%, the average particle hardness is 2.07kgf, and the particle content of particle size 2-4mm is 96.76%.
Embodiment 2
[0018] Example 2: After adding 1.6% waste salt, the sodium nitrate content in the product is 97.72%, the sodium chloride content is 1.38%, the sodium sulfate content is 0.77%, the average particle hardness is 2.72kgf, and the particle content of particle size 2-4mm is 98.33%.
Embodiment 3
[0019] Embodiment 3: After adding 1.8% waste salt, the sodium nitrate content in the product is 97.56%, the sodium chloride content is 1.47%, the sodium sulfate content is 0.84%, the particle average hardness is 3.12kgf, and the particle content of particle size 2-4mm is 98.82%.
[0020] The present invention is mainly applied to the material transportation in the granulation of sodium saltpeter ore, to control the amount of waste salt added, and to add an appropriate amount under the premise of ensuring the quality of the product according to the customer's requirements for product purity.
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