Process for producing multielement fertilizer by plant straw ash

A plant straw and multi-element technology, which is applied in the preparation, application and application of organic fertilizers, can solve the problems of low availability of plant nutrients, improve the utilization rate of nutrients, facilitate packaging, transportation and application, and achieve high activity. Effect

Inactive Publication Date: 2006-06-28
JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Aiming at the defects of low effectiveness of plant nutrient elements produced by direct application of straw ash and processing in the prior art, the present invention provides a method for producing multi-element fertilizer by utilizing plant straw

Method used

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  • Process for producing multielement fertilizer by plant straw ash

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Get 700kg of straw ash, 40kg of waste sulfuric acid (concentration is 70-80%) and 300kg of water, first dissolve sulfuric acid in water to make dilute acid solution, then slowly add dilute acid solution in the stirring process, the final water content of the material is controlled at 30%, the pH is about 7.0. After stirring evenly, put it into a concrete pool or other reaction container and seal it for 1 day. After 1 day, take it out and dry it, crush it, add 25kg of modified starch, granulate it in a disk, and then pack it.

Embodiment 2

[0036] Take 600kg of straw ash, add 300kg of citric acid residue, and add water until the water content of the material is about 40%. After fully stirring with a mixer, put it into a concrete pool and seal it for 10 days. After 10 days, take it out and dry it, crush it, and pack it.

Embodiment 3

[0038] Take 650kg of straw ash, add 250kg of fresh cow manure, and add water until the moisture content of the material is about 35%. After fully stirring with a mixer, put it into a concrete pool and seal it for 7 days. After 7 days, take it out and dry it, pulverize it, add 25kg of modified starch, carry out extrusion granulation and pack it.

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Abstract

The invention relates to a plant straw ash multi-element fertilizer manufacturing method that use simple device, low invest, low producing cost. It could supply P, K, Ca, Mg, Fe, Zn, Cu, Mn and Mo to plant. It has high plant efficiency nutrient. It uses ash that is produced by firing, cracking and gasifying the plant straw as main raw material adding inorganic waste pickle liquid, agricultural use organic acid and/or organic solid waste to make the pH value of raw material decrease below 6.0-7.5, fermenting for 1-10 days, adding 3-10% binding agent after drying and smashing to grain finished fertilizer. The invention is especially suited for the ash fertilizing process and commercial process in straw generating process.

Description

technical field [0001] The invention relates to a method for producing multi-element fertilizer by using plant straw ash residue, especially suitable for the disposal of ash residue generated by burning, pyrolysis, gasification, etc. during the power generation process of straw, and belongs to the solid waste agricultural fertilizer in the field of agricultural environmental protection Processing and Utilization Technology. Background technique [0002] Plant straw contains combustible elements such as C, H, and S, which can be burned directly or indirectly after pyrolysis and gasification. The calorific value of 1kg of straw is generally 18-21MJ, which is equivalent to 0.61-0.72kg of standard coal. my country has a vast territory and is rich in straw resources. In 2001, the total output of rice, wheat, corn, beans, potatoes, oilseeds, cotton, sugarcane and other eight major crop straws in China reached 596.481 million tons, equivalent to 300.47 million tons of standard coa...

Claims

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Application Information

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IPC IPC(8): C05F17/00C05F11/02
CPCY02W30/40
Inventor 黄红英常志州马艳叶小梅张建英朱红
Owner JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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