Preparation of Slow-Release Potash

In this paper, water glass was used as the silicon source to explore the production process of silicone gel coating potassium sulfate. Two experimental programs were put forward as follows: water glass coating potassium sulfate by spraying and silicone gel coating potassium sulfate by mixing. The impacts of the ratio of raw materials, experimental temperature and experimental time on the experiment were also in consideration at the same time. The morphology of the products was characterized by the SEM.