Anti-leaching fertilizer and preparation method thereof
A fertilizer and leaching technology, which is applied to fertilizer mixtures, layered/coated fertilizers, nitrogen fertilizers, etc., can solve the problems of easy leaching and low utilization rate, and achieve a high utilization rate, low cost, and simple and easy process. Effect
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[0023] On the other hand, the embodiment of the present invention also provides a method for preparing an anti-leaching fertilizer, which includes the following steps:
[0024] S01: Provide urea particles;
[0025] S02: The urea particles are pre-heated, and then the modified lignin solution is sprayed on the surface of the urea particles. After the drying treatment, the urea particles coated with the bonding layer are obtained; wherein the bonding layer is modified Lignin composition;
[0026] S03: coating lignin powder on the surface of the bonding layer to form a lignin layer to obtain the anti-leaching fertilizer.
[0027] The preparation method of the anti-leaching fertilizer provided by the embodiment of the present invention is a fertilizer coating technology process. Specifically, a bonding layer is formed on the surface of urea particles, and then a lignin layer is formed on the surface of the bonding layer, thereby obtaining The unique structure of the anti-leaching fertili...
Example Embodiment
[0039] Example 1
[0040] An anti-leaching fertilizer with the following ingredients:
[0041] Modifier lignin binder: 1 part;
[0042] Lignin powder: 1 part;
[0043] Urea granules: 98 parts.
[0044] The preparation method includes: preheating the urea particles, spraying the modified lignin binder on the surface of the urea particles, and performing hot air drying treatment to obtain the urea particles coated with the binding layer; and coating the lignin powder A lignin layer is formed on the surface of the bonding layer to obtain a lignin-coated anti-leaching fertilizer.
Example Embodiment
[0045] Example 2
[0046] An anti-leaching fertilizer with the following ingredients:
[0047] Modifier lignin binder: 2 parts;
[0048] Lignin powder: 1 part;
[0049] Urea granules: 97 parts.
[0050] The preparation method is the same as in Example 1.
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