Slow-release oxidizing agent with calcium peroxide as matrix and paraffin-rosin as envelopes and preparation method

A calcium peroxide and oxidant technology, applied in chemical instruments and methods, other chemical processes, organic fertilizers, etc., can solve the problems of short oxygen release time, unable to meet the demand for oxygen, etc. Oxygen time problem, the effect of simple processing technology

Inactive Publication Date: 2016-08-24
HUNAN SOIL & FERTILIZER INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the release time of calcium peroxide in the gleization paddy field is short, which cannot meet the demand for oxygen in the middle and late stages of rice growth.

Method used

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  • Slow-release oxidizing agent with calcium peroxide as matrix and paraffin-rosin as envelopes and preparation method
  • Slow-release oxidizing agent with calcium peroxide as matrix and paraffin-rosin as envelopes and preparation method
  • Slow-release oxidizing agent with calcium peroxide as matrix and paraffin-rosin as envelopes and preparation method

Examples

Experimental program
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Embodiment 1

[0044] A kind of slow-release oxidant that takes calcium peroxide as matrix paraffin-rosin as coating, and it is made of the raw material of following weight part:

[0045]

[0046]

[0047] A kind of preparation method that takes calcium peroxide as matrix paraffin-rosin as the sustained-release oxidant of coating, its steps are:

[0048] A.60% calcium peroxide raw powder granulation:

[0049] ①Granulation: Adjust the inclination angle of the disk granulator to 60°, the speed to 30r / min, and the heating device to 40-50°C; take 1kg of calcium peroxide raw powder and divide it into 10 equal parts. Take one portion and put it in a disc, quickly use water mist to moisten it and form small particles, the particle size of which is about 0.5mm, take it out for use, repeat the above steps until all 10 portions of powder are granulated.

[0050] ②Granulation: adjust the inclination angle of the disc granulator to 60°, adjust the speed to 30r / min, adjust the heating device to 40...

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Abstract

The invention discloses a slow-release oxidizing agent with calcium peroxide as a matrix and paraffin-rosin as envelopes and a preparation method. The slow-release oxidizing agent is prepared from 60% calcium peroxide, an adhesive, attapulgite, rosin, solid paraffin and talc powder in proportion in steps as follows: A, 60% calcium peroxide is mixed uniformly with the adhesive and the attapulgite to be granulated, and the size of each granule ranges from 3 mm to 5 mm; B, the rosin and the solid paraffin are added in proportion according to the mass of granules in the step A, the talc powder is added in proportion according to the total amount of the solid paraffin and the rosin, the granules in the step A are enveloped with a mixture of the raw materials in the step B, and the slow-release oxidizing agent is prepared after drying. The formula is reasonable, the method is easy to implement, operation is simple, and the oxygen release time of calcium peroxide can be remarkably prolonged, can be as long as 100 days after paraffin-rosin enveloping, is 58 days longer than that of independently applied calcium peroxide powder and is prolonged by 1.4 times. The slow-release agent has great popularization and application value in concentrated gleization rice soil distribution areas in the middle and lower reaches of the Yangtze River.

Description

technical field [0001] The invention belongs to the fields of agricultural ecology, soil improvement and plant nutrition control, and more specifically relates to a slow-release oxidant with calcium peroxide as the matrix and paraffin-rosin as the coating, and also relates to a calcium peroxide as the matrix. A method for preparing a slow-release oxidant coated with paraffin-rosin. The slow-release oxidant can effectively reduce toxic reducing substances in gleization paddy fields, and can supply oxygen to rice. It can also improve the soil pH of acid gleization paddy fields and improve The rice growth environment of the cultivated paddy field, and the prepared slow-release oxidant is suitable for the improvement of the gleized paddy field when the rice is planted in the vast glebed rice area. Background technique [0002] The gleogenic paddy field is the most common low-yielding field in southern my country, widely distributed in the plain lake area and hilly ridges, accoun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C09K101/00C09K109/00
CPCC09K17/40C09K2101/00C09K2109/00
Inventor 董春华苏以荣罗尊长褚飞李万民陈香碧胡亚军洪曦
Owner HUNAN SOIL & FERTILIZER INST
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