Compound fertilizer containing efficient binder and production method of composite fertilizer
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A binder and compound fertilizer technology, applied in the field of compound fertilizer, can solve the problems of increasing useless components, different nutrient content of particles, and reducing the content of active components, so as to improve water and fertilizer retention, maintain a virtuous cycle, and enhance crop resistance. sexual effect
Active Publication Date: 2013-04-03
广西农垦明阳生化有限公司
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Problems solved by technology
The binding agent commonly used in the production of compound fertilizers is clay minerals at present, and the problems encountered are: 1. The raw material bonding performance is poor, and it is difficult to form granules during granulation; 2. Due to poor dispersion and uneven distribution, each The nutrient content of the compound fertilizer granules is different; 3. After drying, the clay on the surface of the fertilizer granules becomes powdery and easy to fall off, which not only reduces the production efficiency, but also seriously affects the qualified rate of the product. 4. The granule strength is low. Easy to break, increasing the contact surface between particles and easy to agglomerate
5. The utilization rate of nitrogen, phosphorus, potassium and other nutrients is not high. Long-term use of this kind in large quantities will easily cause soil acidification and compaction, and the biological activity will be reduced; 6. The use of clay as a binder will reduce the effective components due to the increase of useless components Content, so that the relative increase in production energy consumption and transportation costs
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Embodiment 1
[0022] The preparation method of binding agent, comprises the steps:
[0023] A. Add 400kg of tapioca starch into a three-necked flask, add 600kg of water, start stirring, raise the temperature to 50°C, add sodium carbonate to adjust the pH of the system to 9, add 8kg of sodium tripolyphosphate and 8kg of sodium hypochlorite, react for 30 minutes, and add 2kg of glyoxal , reacted for 30 minutes to obtain starch emulsion;
[0024] B. Start the double-drum dryer, adjust the rotating speed to 300r / min, when the temperature rises to 160°C, add the starch emulsion obtained in step A from the feed port of the double-drum dryer at a flow rate of 1.5m3 / h, and pass through the double-drum After pregelatinization and drying by the dryer, a modified starch block with a thickness of 1mm is obtained;
[0025] C. Grind the modified starch block obtained in step B with a mill, sieve, the product with a particle size of 60 to 80 purposes and the binder of the present invention, and grind the...
Embodiment 2
[0027] Take by weighing 75kg ammonium chloride, 75kg monoammonium phosphate, 50kg potassium chloride, 300kg urea, mix, stir, add the binding agent that 10Kg embodiment 1 makes, mix homogeneously, join in the tumble dryer, at 140 Drum drying at ℃ for 20 minutes to obtain compound fertilizer.
Embodiment 3
[0029] Take by weighing 100kg ammonium chloride, 300kg monoammonium phosphate, 190kg potassium chloride, 420kg urea, mix, stir, add the binding agent that 20Kg embodiment 1 is made, mix homogeneously, join in the tumble drier, at 120 Drum drying at ℃ for 30 minutes to obtain compound fertilizer.
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Abstract
The invention discloses a granular compound fertilizer prepared by using modified starch as a binder. The compound fertilizer is characterized by comprising the following raw materials in parts by weight: 15-40 parts of nitrogenous fertilizer, 20-40 parts of phosphatic fertilizer, 20-42 parts of potash fertilizer and 0.5-2.0 parts of binder. The raw materials of the binder consist of 35-45 parts by weight of starch, 1-5 parts by weight of phosphate, 0.1-3 parts by weight of oxidant, 0.1-1 part by weight of coupling agent and 40-60 parts by weight of water. The binder contained in the granular compound fertilizer has good adhesion capability, so the granular compound fertilizer disclosed by the invention has the advantage that adhesive capability is good, the rotary drum granulation pelletizing ratio is high and the material returning rate is reduced; the pertinence is strong and the fertilizer efficiency is completely releases, so that the soil is hard to harden and the yield-increasing effect is prominent; and the virtuous circle of the soil nutrient can be maintained, the water and nutrient retention capability of the soil is improved and the resistance of the crops is enhanced.
Description
technical field [0001] The invention relates to a compound fertilizer containing a high-efficiency binder, in particular to an inorganic compound fertilizer using modified starch as a binder, and provides a preparation method thereof. Background technique [0002] Fertilizers made by chemical methods or mixed methods that have nitrogen, phosphorus, and potassium at the same time or at least two nutrients are called compound fertilizers. Based on the ratio of nutrients required by a certain crop and the laboratory analysis of the abundance and deficiency of nutrients contained in a certain soil, comprehensively balancing the two factors of high yield and quality of crops and soil fertility, the ratio, type and total amount of input nutrients Formulate the best ratio, fertilizer made by scientific method. Due to the popularity of compound fertilizers, people have also put forward higher safety requirements for compound fertilizer fertilizer products. The binding agent common...
Claims
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Application Information
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