Fertilizer composition containing fibre composite controlled-release dosage and preparation method

A technology of fiber composites and fiber composites, applied in fertilizer mixtures, fertilization devices, applications, etc., can solve the serious environmental pollution caused by papermaking waste pulp sediments, the complex production process of slow-release chemical fertilizers, and the environmental pollution of papermaking waste pulp. The effect of low cost, low toxicity and high utilization rate

Inactive Publication Date: 2009-03-11
WEIHAI DONGMENZI COMPRESSOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiencies in the prior art that the utilization rate of traditional chemical fertilizers is low, the production process of slow-release chemical fertilizers is complex and costly, and the sediments of papermaking waste pulp seriously pollute the environment, the present invention provides an improved fiber composite material prepared by using papermaking waste pulp sediments. Combination with fertilizer substances as controlled release preparation after sexual treatment to form chemical fertilizer composition contain

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1

[0021] The papermaking waste pulp sediment is selected as the raw material, and 0.5% sodium hypochlorite is added to the weight of the papermaking waste pulp sediment for disinfection, deodorization and sterilization; the processed waste pulp sediment is sent to the dryer for drying, the dryer The inlet air temperature is 200°C, the outlet air temperature is 100°C, and the moisture content of the dried papermaking waste slurry sediment is controlled at 5%; the dried papermaking waste slurry sediment is refined through crushing and screening, and the particle size is fine. Controlled at 325 mesh to form a fine granular fiber composite; spray the penetrant sodium dibutyl naphthalene sulfonate and dispersant sodium benzyl naphthalene sulfonate on the surface of the fine particulate fiber composite, and then modify it to obtain Fiber composite controlled release agent; mix the fiber composite controlled release agent with nitrogen fertilizer ammonium bicarbonate uni...

Example Embodiment

[0022] Example 2

[0023] Use papermaking waste slurry sediment as raw material, weigh and add sodium hypochlorite for disinfection, deodorization, and sterilization treatment. The amount of sodium hypochlorite is 1% of the weight of the waste slurry sediment; send the treated waste slurry sediment to a dryer for drying , The inlet air temperature of the dryer is 180°C, the outlet air temperature is 105°C, and the moisture content of the dried papermaking waste slurry sediment is controlled at 7%; the dried papermaking waste slurry sediment is refined through crushing and screening, The particle size is controlled at 250 meshes to form a fine particle fiber composite; spray the penetrant sodium dibutyl naphthalene sulfonate and dispersant sodium benzyl naphthalene sulfonate on the surface of the fine particle fiber composite for modification treatment , The fiber composite controlled release agent is prepared; the fiber composite controlled release agent and the phosphate fertiliz...

Example Embodiment

[0024] Example 3

[0025]The papermaking waste pulp sediment is selected as the raw material, and sodium hypochlorite is weighed and added for disinfection, deodorization and sterilization. The amount of sodium hypochlorite is 0.4% of the weight of the waste pulp sediment; the waste pulp sediment after the above treatment is sent to the dryer for processing Drying, the air inlet temperature of the dryer is 150°C, the outlet air temperature is 100°C, and the moisture content of the dried papermaking waste slurry sediment is controlled at 10%; the dried papermaking waste slurry sediment is refined through crushing and screening , The particle size is controlled at 200 meshes to form a fine particulate fiber composite; spray the penetrant sodium dibutyl naphthalene sulfonate and dispersant sodium benzyl naphthalene sulfonate on the surface of the fine particulate fiber composite for modification After treatment, the fiber composite controlled-release agent is prepared; the fiber comp...

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PUM

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Abstract

The invention relates to a fertilizer composition containing a fibre composite controlled-release agent and a preparation method thereof. The method comprises the following steps: firstly, papermaking waste pulp deposit is used as raw material; sodium hypochlorite accounting for 0.3 to 1 percent of the weight of the deposit is weighed up and added and is subjected to the treatment of disinfection, deodorization and sterilization; secondly, the treated waste pulp is transported to a drier for drying; the water content of the waste pump is controlled to between 5 and 15 percent; thirdly, a granular fibre compound is fined through crushing and sieving; and finally, the surface of the granular fibre compound is painted with an osmotic agent and a dispersant for modification treatment to obtain the fibre composite controlled-release agent; and the fibre composite controlled-release agent and a fertilizer substance are evenly mixed and are pelletized by a pelletizer to form the fertilizer composition containing the fibre composite controlled-release agent. The fertilizer composition comprises the following compositions in weight percentage: 40 to 70 percent of the fertilizer substance, 20 to 50 percent of the fibre compound, 1 to 5 percent of the osmotic agent and 1 to 5 percent of the dispersant. The fertilizer composition is easy to obtain the raw materials and has low cost, long fertilizer effect time and high utilization rate and reduces pollution of the fertilizer to the environment. The preparation method is reasonable in process design, simple, feasible, strong in operability and is easy to realize scale production.

Description

technical field [0001] The invention relates to a mixture of one or more fertilizers and components without special fertilizer effects, especially a fiber composite material prepared by using papermaking waste pulp sediments to be used as a controlled release preparation and combined with fertilizer substances to form a Chemical fertilizer composition containing fiber composite controlled release agent and its preparation method. Background technique [0002] Chemical fertilizers are fertilizers made by chemical and / or physical methods that contain one or several nutrients needed for crop growth. They are widely used in agricultural production to improve soil fertility and crop yield per unit area. Chemical fertilizers are easily soluble in water, and will work immediately after fertilization, and will be absorbed by crops in a short period of time. Therefore, in each stage of crop growth, it is necessary to apply various fertilizers, such as nitrogen fertilizer, potassium ...

Claims

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Application Information

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IPC IPC(8): C05G3/00
Inventor 姜子军王龙
Owner WEIHAI DONGMENZI COMPRESSOR
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