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Composite type soil improvement agent and preparation method thereof

A soil conditioner and composite technology, applied in soil conditioning materials, chemical instruments and methods, fertilizer mixtures, etc., can solve the problems of high cost, easy decomposition and dosage of soil conditioners, etc., and achieve low cost, is conducive to waste utilization, Simple preparation method

Inactive Publication Date: 2016-08-17
FOSHAN JUCHENG BIOCHEM TECH RES & DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Existing soil improvers have disadvantages such as easy decomposition and large dosage, and the cost is relatively high

Method used

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  • Composite type soil improvement agent and preparation method thereof

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preparation example Construction

[0023] The invention provides a method for preparing a composite soil conditioner, which is characterized in that the method comprises: a. crushing straw and passing it through a 20-150 mesh sieve to obtain straw powder; b. mixing straw powder obtained in step a with Bentonite, lignin, fly ash, water-soluble polymer compound and water are mixed to obtain a mixed slurry; wherein, the solid content of the slurry is 5-45%, straw powder and bentonite, lignin, fly ash, water-soluble polymer The mass ratio of the compound is 1: (0.03-1): (0.03-1): (0.03-1): (0.03-1); c, the mixed slurry obtained in step b is mixed with a mass ratio of 1: (0.03-0.1) It is mixed with activated carbon with an average particle size of 1-10 microns and then spray-dried to obtain a composite soil conditioner.

[0024] According to the present invention, the straw powder is well known to those skilled in the art, and may be at least one selected from corn straw, sorghum straw, soybean straw and wheat straw...

Embodiment 1

[0035] a, crush corn stalks and pass through a 20-mesh sieve to obtain straw powder; b, mix the straw powder obtained in step a with bentonite, lignin, fly ash, guar gum and water to obtain a mixed slurry; wherein, the slurry The solid content is 5%, and the mass ratio of straw powder to bentonite, lignin, fly ash, and water-soluble macromolecular compound is 1: (0.03-1): 0.5: 0.5: 0.5; c, the mixture obtained in step b The slurry has a mass ratio of 1:0.03 and an average particle size of 5 microns, a pore volume of 1.5ml / g, and a specific surface area of ​​700m 2 After the gac / g is mixed, carry out spray-drying, the inlet temperature of spray-drying is 400 ℃, and outlet temperature is 250 ℃, then dries at 100 ℃ for 3 hours, obtains composite soil conditioner 1.

Embodiment 2

[0037] a. After pulverizing the wheat straw, pass it through a 70-mesh sieve to obtain straw powder; b. Mix the straw powder obtained in step a with bentonite, lignin, fly ash, starch and water to obtain a mixed slurry; wherein, the solid content of the slurry is The content is 45%, and the mass ratio of straw powder to bentonite, lignin, fly ash, and water-soluble polymer compound is 1:1:1:1:1; c. Mix the slurry obtained in step b with a mass ratio of 1: 0.1 and the average particle size is 1 micron, the pore volume is 1.1ml / g, and the specific surface is 500m 2 After the active carbon of / g is mixed, carry out spray-drying, the inlet temperature of spray-drying is 450 ℃, and outlet temperature is 300 ℃, then dries at 150 ℃ for 6 hours, obtains composite soil conditioner 2.

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Abstract

The invention relates to a composite type soil improvement agent and a preparation method thereof. The method comprises the steps that a, straw is smashed and screened by a 20-150-mesh screen, and straw powder is obtained; b, the straw powder obtained in the step a is mixed with bentonite, xylogen, coal ash, a water-soluble polymer compound and water to obtain mixed serosity, wherein the solid content of the serosity is 5-45%, and the mass ratio of the straw powder to the bentonite to the xylogen to the coal ash to the water-soluble polymer compound is 1:(0.03-1):(0.03-1):(0.03-1):(0.03-1); c, the mixed serosity obtained in the step b is mixed with active carbon with the average grain diameter of 1-10 micrometers according to the mass ratio being 1:(0.03-0.1) for spray drying, and the composite type soil improvement agent is obtained. The soil improvement agent prepared through the method is low in cost, low in decomposition speed and capable of promoting plant growth.

Description

technical field [0001] The invention relates to the field of soil improvers, in particular to a method for preparing a composite soil improver and the prepared composite soil improver. Background technique [0002] Soil improvement is the process of taking corresponding physical, biological or chemical measures to improve soil properties, soil fertility, crop production, and the soil environment for human survival against the poor texture and structure of the soil. All materials that are mainly used to improve the physical, chemical and biological properties of the soil to make them more suitable for plant growth, rather than mainly providing plant nutrients, are called soil amendments. [0003] Chinese patent CN103820124A discloses a soil conditioner, which includes the following components in weight percentage, calculated by dry weight, 80%-85% of sludge and 15%-20% of fly ash. This environmentally friendly soil improver is suitable for soil restoration in barren hills an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C09K101/00
CPCC09K17/40C09K2101/00
Inventor 不公告发明人
Owner FOSHAN JUCHENG BIOCHEM TECH RES & DEV CO LTD
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