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Preparation method of konjac flying powder-coated fertilizer

A konjac fly powder and coating technology, applied in ammonium salt fertilizer, nitrogen fertilizer, fertilization device and other directions, can solve the problems of low utilization rate of fertilizer, irreversibility, waste of resources, etc., and achieve high coating rate, high compatibility, The effect of precise control of the amount of coating

Inactive Publication Date: 2017-07-18
FARM PROD PROCESSING & NUCLEAR AGRI TECH INST HUBEI ACAD OF AGRI SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The low utilization rate of fertilizers will not only cause waste of resources, but also bring about irreversible problems in soil, water ecology, air and even multiple links in the food chain

Method used

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  • Preparation method of konjac flying powder-coated fertilizer
  • Preparation method of konjac flying powder-coated fertilizer
  • Preparation method of konjac flying powder-coated fertilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1: Comparison of mechanical properties of fly powder and polyvinyl alcohol blend film, starch and polyvinyl alcohol blend film

[0039] Such as figure 1 Shown, a kind of preparation method of konjac coated fertilizer comprises the steps:

[0040] 1) Take 3 parts of konjac flying powder, which are 3 grams, 6 grams and 9 grams respectively. 5 parts of polyvinyl alcohol, 15 grams each. 5 parts of water, each 300 milliliters (ie 300g). 5 parts of glycerin, 9 grams each. Starch 1 part, quality is 6 grams. The samples to be prepared are listed in Table 1 below.

[0041] The distribution ratio and performance of each sample group in table 1

[0042]

[0043] 2) Pour 1 part of polyvinyl alcohol, 1 part of water and 1 part of glycerin (that is, No. 1 in Table 1) selected in step 1) into a beaker. The water bath condition of the beaker is 95°C, and the heating time is 180 minutes;

[0044] 3) After step 2) is completed, pour the first portion of konjac flying po...

Embodiment 2

[0054] Example 2: Comparison of film degradation properties of fly powder-polyvinyl alcohol blends and starch blends

[0055] Film was prepared according to the formula in Table 1, and the method was the same as step 1)-step 5) in Example 1. Cut into 8.5*5.5cm, cut 12 pieces for each recipe, and bury it in yellow loam soil to degrade naturally for 12 months. The soil depth is 10cm. Take out one piece of each formula sample regularly every month, take pictures of mildew and damage, and observe the microstructure of scanning electron microscope. See the results of taking photos in the second month figure 2 , image 3 , Figure 4 and scan results of some samples such as Figure 7 , Figure 8 , Figure 9 . figure 2 , image 3 , Figure 4 The degradation performance of fly powder and polyvinyl alcohol blend film is obviously higher than that of starch and polyvinyl alcohol blend film and polyvinyl alcohol film. Figure 7 , Figure 8 , Figure 9 It shows that the fly ...

Embodiment 3

[0058] Example 3: Comparison of slow-release performance of fly powder-polyvinyl alcohol blend and starch blend coated fertilizer

[0059] Film was prepared according to the formula in Table 1, and the method was the same as step 1)-step 5) of Example 1. Uncover the film, and cut each film diagonally into 2 pieces. Then fold it diagonally, seal one side with a sealing machine, pour 5 grams of urea into it, and seal it. The coated fertilizer bag and the coated fertilizer are as follows: Figure 5-6 . The prepared coated fertilizer is put into a beaker with 100 milliliters of distilled water, and the beaker is placed in a constant temperature water bath at a temperature of 25°C. The fertilizer in the coated fertilizer is slowly released into the distilled water in the beaker, and the release period is 28 days. On the 24th, 4th, 8th, 12th, 16th, 20th, 24th, and 28th days of release, take 10 ml of the sustained-release solution from the beaker and immediately add 10 ml of distil...

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Abstract

The invention belongs to the technical field of fertilizer preparation and discloses a preparation method of a konjac flying powder-coated fertilizer. The method is characterized by comprising the following steps: (1) selecting raw materials according to the ratio of konjac flying powder to polyvinyl alcohol to water to glycerinum of (3-12)g:15g:300g:9g; (2) pouring the selected polyvinyl alcohol, water and glycerinum into a kneading machine; (3) adding the konjac flying powder to obtain a mixture; (4) extruding the mixture obtained in the step (3) through a screw of the kneading machine, containing the mixture in a polyethylene tray, immediately carrying out curtain coating until the solution is uniformly paved on the tray; (5) carrying out forced air drying on the tray containing the mixture obtained in the step (4) at 50-80 DEG C for 2-3h and forming a film from the mixture in the tray; (6) removing a film to obtain the film which is 0.12-0.2mm in thickness; (7) carrying out film cutting and sealing to prepare a coated fertilizer bag; and (8) carrying out fertilizer filling and sealing to obtain the required konjac flying powder-coated fertilizer. According to the method, the problem of shortage of a deep process technology of the konjac flying powder can be solved, and a factory technology is provided for production of the konjac flying powder-coated fertilizer.

Description

technical field [0001] The invention belongs to the technical field of fertilizer preparation, and in particular relates to a preparation method of konjac flying powder-coated fertilizer. Background technique [0002] Slow-release fertilizers can adjust the release rate of fertilizer nutrients according to the needs of crop growth and development, so as to improve the utilization rate of fertilizers and reduce fertilizer loss, environmental pollution and damage to aquatic ecosystems. my country's fertilizer consumption exceeds 510 million tons per year, but the utilization rate of fertilizer is only 35%. The low utilization rate of fertilizers will not only cause waste of resources, but also cause irreversible problems in soil, water ecology, air and even multiple links in the food chain. The important factor affecting the low fertilizer utilization rate is the lack of water resources. The dry cultivated land in my country accounts for 56.8% of the total cultivated land are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08L99/00C08K5/053C05C3/00C05C9/00B29D7/01
CPCB29D7/01C05C3/00C05C9/00C08J5/18C08J2329/04C08J2499/00C08L29/04C08L2203/16C08L99/00C08K5/053
Inventor 耿胜荣廖涛吴平熊光权唐华林白婵李新鉏晓艳李海蓝苟春鹏汪兰田凤丽吴文锦张金木
Owner FARM PROD PROCESSING & NUCLEAR AGRI TECH INST HUBEI ACAD OF AGRI SCI
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