Adhesive controlled release fertilizer and preparation method thereof
A controlled-release fertilizer and adhesive technology, which is applied in fertilizer mixtures, fertilization devices, applications, etc., can solve the problems of little progress in the commercialization of controlled-release fertilizers, limiting the widespread use of fertilizers, and difficult-to-degrade controlled-release materials, and achieve a good ecological Environmental benefits, improved nutrient use efficiency, and reduced fertilizer losses
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Embodiment 1
[0039] Each component and weight ratio in the raw material formula are:
[0040] Pregelatinized Starch 4%,
[0041] Tung oil 2%,
[0042] Disproportionated Rosin 4%,
[0043] Attapulgite 13%,
[0044] Lignosulfonate 13%,
[0045] Polyvinyl alcohol (PVA) 4%,
[0046] Carboxymethylcellulose (CMC) 4%,
[0047] The rest is fertilizer.
[0048] Weigh 24% urea, 17% diammonium phosphorus, 7% potassium chloride and 8% potassium sulfate and add 150kg / ton of water to partially dissolve the fertilizer, then add pregelatinized starch, lignosulfur Acetate, polyvinyl alcohol (PVA), carboxymethyl cellulose (CMC), stir with a power mixer, heat to boiling, then add attapulgite powder, continue to stir, and melt the mixture liquid in the heated tung oil with disproportionated rosin in advance Add, then heat and evaporate to dryness while stirring. When the fertilizer moisture is below 10%, use a granulator to granulate. In order to prevent the fertilizer sticking machine from sticking to...
Embodiment 2
[0050] Pregelatinized Starch 4%,
[0051] Tung oil 2%,
[0052] Disproportionated Rosin 4%,
[0053] Attapulgite 15%,
[0054] Lignosulfonate 7%,
[0055] Weathered coal 12%,
[0056] The rest is fertilizer.
[0057] Take by weight 23% urea, 18% diammonium phosphorus, 7% potassium chloride and 8% potassium sulfate, add 150kg / ton of water to partially dissolve the fertilizer, add weathered coal and attapulgite powder simultaneously, Processing process is the same as example one.
Embodiment 3
[0059] Pregelatinized Starch 5%,
[0060] Tung oil 2%,
[0061] Disproportionated Rosin 5%,
[0062] Attapulgite 7%,
[0063] Lignosulfonate 7%,
[0064] The rest is fertilizer.
[0065] Take by weight 30% urea, 24% diammonium phosphorus, 9% potassium chloride and 11% potassium sulfate, add 150kg / ton of water to partially dissolve the fertilizer, and the process is the same as example one.
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