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Lignosulfonate-polyvinyl alcohol blended coated soil conditioner and preparation method thereof

A technology of lignosulfonate and soil improver, which is applied in the direction of soil conditioning materials, chemical instruments and methods, urea compound fertilizer, etc. It can solve the problems of reducing soil acidity, not meeting sustainable development, and harming human safety. , to achieve the effects of improving effectiveness, isolating lime from contact with water, and facilitating transportation and use

Inactive Publication Date: 2017-06-20
郑州恒达会展服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It is understood that there is little research on the topic of coating the calcareous improver at present, and most of the related ones are coated on the outside of the fertilizer. If the blend film solution applied to the fertilizer is directly wrapped on the outside of the calcareous improver, it will The shortcoming that the formula is easy to lose secrets, and then leakage occurs, which affects the coating effect, and there are still hidden dangers of harming the human body. Even if there is no leakage, there will be blended film solutions and calcareous modifiers used in fertilizers. A chemical reaction occurs to reduce the effect of the product on improving soil acidity, and most of the existing blended membrane solutions used for fertilizers are chemical products, which are expensive and do not conform to the route of sustainable development

Method used

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  • Lignosulfonate-polyvinyl alcohol blended coated soil conditioner and preparation method thereof
  • Lignosulfonate-polyvinyl alcohol blended coated soil conditioner and preparation method thereof
  • Lignosulfonate-polyvinyl alcohol blended coated soil conditioner and preparation method thereof

Examples

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Effect test

Embodiment 1

[0045] A lignosulfonate-polyvinyl alcohol blended coating soil improver, comprising lime nitrogen meeting agricultural standards and a coating coated on the outside of the lime nitrogen, the mass ratio of the lime nitrogen to the coating is 100:13, the coating includes the following raw materials in parts by weight: 2 parts of sodium lignosulfonate, 9 parts of polyvinyl alcohol, 2 parts of urea, and 1 part of 37wt% formaldehyde.

[0046] A method for preparing lignosulfonate-polyvinyl alcohol blended coating soil conditioner, comprising the following steps:

[0047] S1: Spread 100 parts by weight of lime nitrogen with a particle size greater than 2mm on an iron pan, then pour the heated and cooled tung oil (anhydrous) on the surface of the lime, roll the lime improving agent and make the tung oil evenly wrapped in the lime After the surface of the improver is dried naturally (rolling occasionally to prevent the oil from sticking to the iron plate), the core agent is obtained f...

Embodiment 2

[0055] A lignosulfonate-polyvinyl alcohol blend coated soil conditioner, comprising a compound preparation containing quicklime and a coating coated on the outside of the compound preparation containing quicklime, the compound preparation containing quicklime and the compound preparation containing quicklime The mass ratio of the coating is 100:13, and the coating includes the following raw materials in parts by weight: 5 parts of sodium lignosulfonate, 10 parts of polyvinyl alcohol, 5 parts of urea, and 5 parts of 40wt% formaldehyde.

[0056] A method for preparing lignosulfonate-polyvinyl alcohol blended coating soil conditioner, comprising the following steps:

[0057] S1: Mix the powder compound preparation containing quicklime and the binder at a weight ratio of 100:0.9, and then prepare calcareous modifier particles with a compressive strength of 8N and a particle diameter of 3.5 mm. Granules, spread on the iron plate, and then pour the heated and cooled tung oil (anhydr...

Embodiment 3

[0065] A lignosulfonate-polyvinyl alcohol blended coating soil conditioner, comprising slaked lime meeting agricultural standards and a coating coated on the outside of the slaked lime, the mass ratio of the slaked lime to the coating being 120:14 , the coating includes the following raw materials in parts by weight: 11 parts of sodium lignosulfonate, 11 parts of polyvinyl alcohol, 11 parts of urea, and 8 parts of 40wt% formaldehyde.

[0066] A method for preparing lignosulfonate-polyvinyl alcohol blended coating soil conditioner, comprising the following steps:

[0067] S1: Mix the slaked lime of the powder with the binder according to the weight ratio of 120:1.7, and then prepare the calcareous modifier particles with a compressive strength of 8.5N and a particle diameter of 4mm, spread the calcareous modifier particles flat Put the heated and cooled tung oil (anhydrous) on the lime surface, roll the calcareous improver and wrap the tung oil evenly on the surface of the calc...

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Abstract

The invention relates to a lignosulfonate-polyvinyl alcohol blended coated soil conditioner and a preparation method thereof. The lignosulfonate-polyvinyl alcohol blended coated soil conditioner comprises a calcareous conditioner and a coating coated on the outer side of the calcareous conditioner, wherein the coating comprises the following raw materials in parts by weight: 2 to 10 parts of lignosulfonate, 9 to 11 parts of polyvinyl alcohol, 2 to 10 parts of urea, 1 to 10 parts of formaldehyde and 48 to 52 parts of water. The lignosulfonate-polyvinyl alcohol blended coated soil conditioner prepared by using the method provided by the invention can be applied to improvement of acidity of farmland soil and treatment of heavy metal pollution, is safe and hazard-free, mitigates stimulation and injury to users, facilitates transportation of calcareous substances, and has the effect of improving acidic soil better than the effect of improving the acidic soil by directly applying the calcareous substances.

Description

technical field [0001] The invention belongs to the field of soil improver processing, and in particular relates to a lignosulfonate-polyvinyl alcohol blend coated soil improver and a preparation method thereof. Background technique [0002] Soil is an essential part of the human living environment and the material basis for food production safety. The regulation of soil quality is directly related to human survival and health. At present, my country's cultivated land soil is showing a trend of acidification. At the same time, with the development of science and technology, the discharge of industrial waste, the discarding of urban garbage and the application of agricultural chemical fertilizers have made the heavy metal pollution of the soil increasingly serious. These not only damage the soil system, affect crop growth and yield, but also cause great harm to human health. [0003] At present, the application of lime-based alkaline substances is a common method to improve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C05G3/00C05G3/04C09K101/00C05G3/80
CPCC05C9/00C05G3/80C05G5/30C09K17/40C09K2101/00
Inventor 孙钊
Owner 郑州恒达会展服务有限公司
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