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Melt granulation polypeptide stability lost control compound fertilizer and preparing method thereof
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A melt granulation and stability technology is applied in the field of compound fertilizers to avoid leaching loss, promote nutrient absorption, and improve crop yield and quality.
Active Publication Date: 2012-06-20
STANLEY AGRI GRP CO LTD
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[0005] Loss-controlled fertilizer is a nutrient loss-controlled technology. Different from slow / controlled-release fertilizers, it focuses on the maintenance of nutrient ions in the soil environment and the inhibition of transformation and loss. Therefore, loss-controlled fertilizers are no longer limited to one or It is a kind of fertilizer that can control nutrient loss, improve utilization rate and prolong fertilizer effect. At present, there is no definition and related standards of loss control fertilizer at home and abroad.
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Embodiment 1
[0076] Melt granulation polypeptide stability control loss compound fertilizer, the total nutrient content is 50%, nitrogen, phosphorus and potassium (N-P 2 o 5 -K 2 O) content is 28%, 11%, 11%, zinc content is 0.54%, iron content is 0.39%, manganese content is 0.09%, all are percentage by mass.
[0078] Preparation method: Take 548 kg of urea solution or melt at the outlet of the second-stage evaporator of the urea plant, the concentration is greater than 99%, the temperature is about 140°C, add 1.0 kg of combined nitrification inhibitor, 0.8 kg of combined urease inhibitor, and a polypeptide with a content of 40.0%...
example 2
[0080] Melt granulation polypeptide stability control loss compound fertilizer, the total nutrient content is 50%, nitrogen, phosphorus and potassium (N-P 2 o 5 -K 2 O) contents are 25%, 10%, and 15% respectively, the zinc content is 0.54%, the iron content is 0.39%, and the manganese content is 0.09%, all of which are percentages by mass.
[0081] The raw material components are as follows: 472 parts of urea, 230 parts of monoammonium phosphate, 28 parts of ammonium chloride, 246 parts of potassium chloride, 9 parts of zinc oxide, 5 parts of ferrous oxide, 3 parts of manganese sulfate, 0.8 parts of combined urease inhibitor, Combine 1 part of nitrification inhibitor, 0.2 part of polypeptide synergist, and 5 parts of filler.
[0082] Preparation method: Mix 472 kg of solid urea with 0.8 kg of combined urease inhibitor, 1 kg of combined nitrification inhibitor, and 0.2 kg of polypeptide synergist with a content of 40.0%, and heat it to 136°C to form a molten liquid. Mix 230 k...
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Abstract
The invention discloses a melt granulation polypeptide stability lost control compound fertilizer and a preparing method thereof, which relate to the technical field of compound fertilizers. The melt granulation polypeptide stability lost control compound fertilizer adopts urea, monoammonium phosphate, ammoniumchloride, potassiumchloride, zincoxide, ferrousoxide, manganesesulfate, combined urease inhibitors, combined nitrification inhibitors, polypeptide synergist and fillings as raw matreials, and all the raw materials are dosed according to a specified ratio. The polypeptide stability lost control compound fertilizer product is obtained through processes such as mixing stirring, spray granulating, cooling curing, sieving, measuring and packing. The melt granulation polypeptide stability lost control compound fertilizer product has the advantages of improving fertilizer use ratio, being completely degraded without residuals and being high in absorbed efficiency.
Description
technical field [0001] The invention relates to the technical field of compound fertilizers, in particular to a melt granulated polypeptide stability loss-controlled compound fertilizer and a preparation method thereof. Background technique [0002] Slow / controlled release fertilizers are fertilizers that delay the initial release of nutrients by various regulatory mechanisms, prolong the effective period for plants to absorb and utilize their effective nutrients, and make their nutrients release slowly or controlledly according to the set release rate and release period (HG / T3931-2007). [0003] Slow / controlled release fertilizers are one of the research hotspots in the country and even the world today. They are divided into high-end slow / controlled release fertilizers (for horticultural crops) and low-end slow / controlled release fertilizers (for field crops). High-end and low-end slow / controlled release fertilizers adopt different technologies, or chemical synthesis, or ...
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