Preparation method of granular calcium-magnesium-phosphorus fertilizer containing various trace elements
A technology of microelement granules and calcium-magnesium phosphate fertilizer, which is applied to phosphate fertilizers, fertilization devices, fertilizer mixtures, etc., can solve problems such as unsuitability and single fertilizer efficiency of calcium-magnesium-phosphate fertilizers, and achieve balanced nutrients, uniform particle size, and good disintegration performance
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Embodiment 1
[0010] Calcium magnesium phosphate fertilizer, zinc sulfate, manganese oxide and sodium borate are used as main raw materials, calcium lignosulfonate is used as binder, and granulated according to the following mass ratio: 75 parts of powdered calcium magnesium phosphate fertilizer, 6 1 part of zinc sulfate, 1 part of manganese oxide, 0.1 part of sodium borate mixed powder as dry material, and 3 parts of calcium lignosulfonate as binder for granulation to produce calcium magnesium phosphate fertilizer with round particles containing various trace elements.
[0011] The calcium magnesium phosphate fertilizer containing various trace elements prepared in this embodiment all contains: calcium, magnesium, phosphorus, zinc, manganese, sodium, sulfur, the product has uniform particle size, smooth surface, and the strength reaches ≥ 3kg / cm 2 , and the disintegration time is ≤1min, and the disintegration rate is ≥95%.
Embodiment 2
[0013] Using calcium magnesium phosphate fertilizer, zinc sulfate, manganese oxide, and sodium borate as main raw materials, together with sodium lignosulfonate as binder, granulate according to the following mass ratio: 89 parts of powdered calcium magnesium phosphate fertilizer, 14 1 part of zinc sulfate, 4 parts of manganese oxide, 1 part of sodium borate mixed powder as dry material, and 7 parts of sodium lignosulfonate as binder for granulation to produce calcium magnesium phosphate fertilizer with round particles containing various trace elements.
[0014] The calcium magnesium phosphate fertilizer containing various trace elements prepared in this embodiment all contains: calcium, magnesium, phosphorus, zinc, manganese, sodium, sulfur, the product has uniform particle size, smooth surface, and the strength reaches ≥ 3kg / cm 2 , and the disintegration time is ≤1min, and the disintegration rate is ≥95%.
Embodiment 3
[0016] Using calcium magnesium phosphate fertilizer, zinc sulfate, manganese oxide, and sodium borate as main raw materials, together with magnesium lignosulfonate as binder, granulate according to the following mass ratio: 82 parts of powdered calcium magnesium phosphate fertilizer, 10 1 part of zinc sulfate, 2.5 parts of manganese oxide, 0.5 part of sodium borate mixed powder as dry material, 5 parts of magnesium lignosulfonate as binder for granulation to prepare round particles of calcium magnesium phosphate fertilizer containing various trace elements.
[0017] The calcium magnesium phosphate fertilizer containing various trace elements prepared in this embodiment all contains: calcium, magnesium, phosphorus, zinc, manganese, sodium, sulfur, the product has uniform particle size, smooth surface, and the strength reaches ≥ 3kg / cm 2 , and the disintegration time is ≤1min, and the disintegration rate is ≥95%.
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