Preparation method and application of modified attapulgite clay

A kind of attapulgite clay, modified technology, applied in the direction of botanical equipment and methods, applications, chemical instruments and methods, etc., can solve the problems of increased surface acidity, increased production costs, short storage period of pesticides, etc., and achieve stability Good, reduce pollution, prolong the effect of drug effect

Active Publication Date: 2011-08-17
MINGGUANG TIANJIAO TECH DEV
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Attapulgite clay is simply crushed (or powdered), and it is not ideal to be directly used as a pesticide carrier. The main reason is that attapulgite clay has a strong water absorption capacity (generally about 15%) and contains a strong surface acid value ( pKa<1.8), these characteristics cause attapulgite to be subjected to a lot of restrictions when being used as pesticide carrier, as usable pesticide kind is less, and the storage period of pesticide is shorter; At present domestic processing technology to attapulgite as pesticide carrier is , choose high-quality attapulgite raw ore to dry (or dr

Method used

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  • Preparation method and application of modified attapulgite clay
  • Preparation method and application of modified attapulgite clay
  • Preparation method and application of modified attapulgite clay

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Embodiment Construction

[0028] A preparation method of modified attapulgite clay, comprising the following steps:

[0029] (1) Purification Remove impurities such as opal, basalt and marble in attapulgite clay ore;

[0030] (2) Drying The purified attapulgite clay is dried, and the moisture content is required to be less than 5%;

[0031] (3) Pulverize the dried attapulgite clay;

[0032] (4) Spraying auxiliary agent 1 Spray the auxiliary agent 1 dissolved in water onto the sieved attapulgite clay particles, stir evenly, so that the auxiliary agent is fully coated on the surface of the attapulgite clay particles;

[0033] (5) Low-temperature baking Put the attapulgite clay that has been stirred evenly in step (4) into an oven for low-temperature baking, the temperature is controlled at 35-45°C, kept at a constant temperature for 3-4 hours, cooled and pulverized;

[0034] (6) Add additive 2 Add additive 2 to the attapulgite clay pulverized in step (5), and stir well.

[0035] When the step (3) is p...

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Abstract

The invention discloses a preparation method of attapulgite high-performance pesticide carrier. The preparation method comprises the following steps: purifying attapulgite clay, drying, grinding, adding an additive, baking at a low temperature, cooling, grinding again, then adding another additive to mix evenly and prepare the pesticide carrier. The modified attapulgite obtained through a series of treatments has the original characteristics of attapulgite that the attapulgite has high absorbability and is inert to pesticide; the surface acid value of the original attapulgite can be reduced, the specific area can be increased, the water absorption rate can be reduced; the modified attapulgite can be used as pesticide carrier to replace white carbon black, thus the drug concentration can be reduced, the medical effect can be prolonged and the environmental pollutions caused by pesticide can be reduced. Therefore, the modified attapulgite has great significance in increasing the qualityof the Chinese powder pesticide, reducing the dosage of the Chinese pesticide and expanding the exports of the Chinese pesticide and carrier.

Description

technical field [0001] The invention relates to a preparation method and application of modified attapulgite clay. Background technique [0002] my country is a large agricultural country, and a large amount of pesticides are needed every year to ensure high agricultural yields. With the use of a large amount of pesticides, environmental pollution and environmental deterioration will inevitably occur. Therefore, it is imminent to reduce the amount of pesticides used and improve the level of pesticide formulations. Pesticide powders and granules have many advantages - less organic solvents are used, high utilization of pesticide active components, and the carrier itself for powders has no pollution to the environment. Therefore, the development of specific surface area, strong adsorption, and low surface acid value ( That is, the high-performance pesticide carrier with a large pKa value has a very broad market prospect. [0003] The quality and performance of powder pesticid...

Claims

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Application Information

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IPC IPC(8): C01B33/40A01N25/08
Inventor 杨立新
Owner MINGGUANG TIANJIAO TECH DEV
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