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Modified starch binder used for granulation of organic fertilizer and preparation method thereof

A technology of binder and starch, which is applied to the field of modified starch binder for organic fertilizer granulation and its preparation, can solve the problems of high cost, environmental pollution, complicated production process of binding materials, etc., and achieves low cost and environmental protection. Friendly, good granulation and bonding effect

Active Publication Date: 2012-05-30
北京永丰泰生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, less adhesive materials are applied to the production of granular organic fertilizers, and there are certain technical problems.
Due to the complex manufacturing process, high cost and environmental pollution of bonding materials

Method used

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  • Modified starch binder used for granulation of organic fertilizer and preparation method thereof
  • Modified starch binder used for granulation of organic fertilizer and preparation method thereof
  • Modified starch binder used for granulation of organic fertilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1, the preparation of modified starch binder

[0023] 1) Swell 100g of cornstarch with water for 5min; then add it to 300g of water and stir, place the system in a water bath at 50°C, then add 1.0mL of concentrated sulfuric acid (the pH of the system is 1.0) to the system and stir After adding 1.8g of potassium permanganate and 1.5g of oxalic acid, the oxidation reaction was carried out for 30 minutes, and the oxidation reaction was terminated with 2g of sodium thiosulfate to obtain 400g of oxidized starch.

[0024] 2) Add 10g of sodium hydroxide to the above oxidized starch and stir for 6min, then add 1.5g of borax to the system for cross-linking reaction, control the temperature at 40°C, add 0.1g of tributyl phosphate after 15min of reaction, stir evenly Obtain 500g modified starch binder.

Embodiment 2

[0025] Embodiment 2, the preparation of modified starch binder

[0026] 1) Swell 200g of wheat starch with water for 5min; then add it to 600g of water and stir, place the system in a water bath at 55°C, then add 2.0mL of concentrated sulfuric acid (the pH of the system is 1.0) to the system and stir After uniformly adding 3g potassium permanganate and 3.5g oxalic acid in sequence, the oxidation reaction was carried out for 30 minutes, and the oxidation reaction was terminated with 3.5g sodium thiosulfate to obtain 700g oxidized starch.

[0027] 2) Add 16g of sodium hydroxide to the above oxidized starch and stir for 8 minutes, then add 2g of borax to the system for cross-linking reaction, control the temperature at 45°C, add 0.3g of tributyl phosphate after 20 minutes of reaction, and stir evenly to obtain 800g modified starch binder.

Embodiment 3

[0028] Embodiment 3, the preparation of modified starch binder

[0029] 1) Swell 1kg of potato starch with water for 10min; then add it to 3kg of water and stir, place the system in a water bath at 60°C, then add 17mL of concentrated sulfuric acid (the pH of the system is 1.0) to the system and stir evenly After adding 20g of potassium permanganate and 20g of oxalic acid in turn, the oxidation reaction was carried out for 45min, and the oxidation reaction was terminated with 20g of sodium thiosulfate to obtain 4kg of oxidized starch.

[0030] 2) Add 100g of potassium hydroxide to the above oxidized starch and stir for 10min, then add 20g of borax to the system for cross-linking reaction, control the temperature at 45°C, add 5g of tributyl phosphate after reacting for 15min, and stir evenly to obtain 5kg Modified starch binder.

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Abstract

The invention provides a modified starch binder used for granulation of an organic fertilizer and a preparation method thereof. The method comprises the following steps: 1) subjecting plant starch to an oxidation reaction so as to obtain oxidized starch; 2) adding a gelatinizing agent into the oxidized starch and carrying out a cross-linking reaction so as to obtain the modified starch binder. Modified starch prepared by using the method has the advantages of low cost, environment friendliness and a good granulation bonding effect. Raw materials used for the binder are environment friendly and can degrade rapidly. When applied in granulation of an organic fertilizer, the binder enables the organic fertilizer to form granules, improves transport and usage efficiency of the organic fertilizer and strengthens popularization and application of the organic fertilizer.

Description

technical field [0001] The invention relates to a modified starch binder and a preparation method thereof, in particular to a modified starch binder used for organic fertilizer granulation and a preparation method thereof. Background technique [0002] The current organic fertilizer products are mainly in powder form, which is difficult to meet the current and future needs of agricultural mechanization and high-efficiency planting models. Granularized organic fertilizer can solve the defects of powdered organic fertilizer, but the granular organic fertilizer prepared by disc granulation method still has the technical problems of low compressive strength, fragility during shipment and difficult quality assurance. Therefore, in order to improve the proportion and efficiency of organic fertilizer use in my country under intensive planting conditions, and to solve technical problems in the production and application of granular organic fertilizers, it is necessary to use bonding...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L3/10C08J3/24C08B31/18C05G3/00
Inventor 张琳肖强王甲辰邹国元左强杜连凤刘宝存黄楠
Owner 北京永丰泰生物科技有限公司
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