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Agglomeration-wrapping dry-proof pelleting method for organic inorganic mixed fertilizer

A compound fertilizer, no drying technology, applied in inorganic fertilizers, urea compound fertilizers, potash fertilizers, etc., can solve the problems of low extrusion granulation efficiency, high energy consumption, large mold wear, etc., and achieves reasonable formula and process. The effect of reducing environmental pollution and reducing the cost of fertilizer production

Inactive Publication Date: 2007-04-25
ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Organic-inorganic compound fertilizers are light in weight and highly dispersible. Generally, the following two methods are used for granulation processing: one method is extrusion granulation, which does not require water spraying, and does not require drying and cooling after granulation. Simple process, low investment, no need for drying, low energy consumption, etc., but its product appearance is rough, easy to break, and users are not very welcome. At the same time, according to the requirements of my country's organic-inorganic compound fertilizer standard GB18877, the moisture content of the product should be controlled at 10%. Below, but under this condition, the extrusion granulation efficiency is very low, and the wear of the mold is also large.
The other is agglomeration method (disc or drum) granulation. From the perspective of appearance and storage performance, its products have certain market advantages. However, the moisture content of materials in the early stage of processing is relatively high, and should generally be controlled at about 20%. , after being granulated and then dried to reduce the water content to below 10%, the energy consumption will be greater and the cost will be higher

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: (the organic-inorganic compound fertilizer granulation method that nitrogen, phosphorus and potassium compound formula is 9-3-6)

[0036] Follow these steps:

[0037] (1) Preparation of organic-inorganic compound granular fertilizer: The components of the granular fertilizer and the weight of each component contained in each ton of product are:

[0038] ①Harmless organic fertilizer: In this case, pig manure is used as raw material, with an average organic matter ≥ 50%, N+P 2 O5+K 2 O ≥ 4%, water content ≤ 20%; 400kg per ton of feed, which provides organic matter ≥ 200kg, N+P 2 o 5 Ten K 2 O≥16kg, water 80kg;

[0039] ② Urea: N ≥ 46%, moisture ≤ 1%, 196kg per ton; N90kg is provided;

[0040] ③ Superphosphate: P 2 o 5 ≥16%, moisture ≤12%, feeding 150kg per ton, providing P 2 o 5 24kg;

[0041] ④ Potassium chloride: K 2 O ≥ 60%, moisture ≤ 2%, feeding 100kg per ton, providing K 2 O 60kg;

[0042] ⑤ Calcium magnesium phosphate fertilizer: P 2 o...

Embodiment 2

[0054] Embodiment 2: (the organic-inorganic compound fertilizer granulation method that nitrogen phosphorus potassium compound formula is 10-4-6)

[0055] The components of the present embodiment granular fertilizer and the feeding weight of each component contained in every ton of product are:

[0056] ①Organic fertilizer: In this example, pig manure is used as raw material, containing organic matter ≥ 50%, N+P 2 o 5 +K 2 O ≥ 4%, water content ≤ 20%; 410kg per ton of feed;

[0057] ② Urea: N ≥ 46%, moisture ≤ 1%, 215kg per ton; provide N98.9kg;

[0058] ③ Superphosphate: P 2 o 5 ≥16%, moisture ≤12%, feeding 70kg per ton; provide P 2 o 5 11.2kg;

[0059] ④ Monoammonium phosphate: P 2 o 5 ≥48%, N≥8%, moisture ≤5%, feeding 50kg per ton; provide P 2 o 5 24kg, provide N4kg;

[0060] ⑤ Potassium chloride: K 2 O ≥ 60%, moisture ≤ 2%, feeding 100kg per ton, providing K 2 O 60kg;

[0061] ⑥ Calcium magnesium phosphate fertilizer: P 2 o 5 ≥15%, feed 40kg per ton, pr...

Embodiment 3

[0067] Embodiment 3: (Nitrogen Phosphorus Potassium coordination formula is 7-4-7)

[0068] The components of the present embodiment granular fertilizer and the feeding weight of each component contained in every ton of product are:

[0069] ① Organic fertilizer: In this example, chicken manure is used as raw material, containing organic matter ≥ 50%, N+P 2 o 5 +K 2 O ≥ 4%, water content ≤ 20%; feed 450kg per ton;

[0070] ② Urea: N ≥ 46%, moisture ≤ 1%, feeding 160kg per ton, providing N73.6kg;

[0071] ③ Superphosphate: P 2 o 5 ≥16%, moisture ≤12%, feeding 125kg per ton, providing P 2 o 5 20kg;

[0072] ④ Monoammonium phosphate: P 2 o 5 ≥48%, N≥8%, moisture ≤5%, feeding 35kg per ton; provide P 2 o 5 16.8, provide N2.8kg;

[0073] ⑤ Potassium chloride: K 2 O ≥ 60%, moisture ≤ 2%, feeding 117kg per ton, providing K 2 O 70kg;

[0074] ⑥ Calcium magnesium phosphate fertilizer: P 2 o 5 ≥15%, feed 50kg per ton, provide P 2 o 5 7.5kg;

[0075] ⑦ Binder 1 Por...

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Abstract

The invention discloses an agglomeration-parcel non-drying graining method of organic inorganic composite fertilizer in the fertilizer preparing domain, which comprises the following steps: allocating raw material; grinding; blending; graining through disc machine; parceling; shaping; sieving; detecting; packing. The invention transmits partial free water in the particle fertilizer into crystallized water without drying, which satisfies the request of GB18877-2002.

Description

technical field [0001] The invention relates to the technical field of fertilizer production, in particular to a granulation method without drying by an organic-inorganic compound fertilizer agglomeration method. technical background [0002] Organic-inorganic compound fertilizers are light in weight and highly dispersible. Generally, the following two methods are used for granulation processing: one method is extrusion granulation, which does not require water spraying, and does not require drying and cooling after granulation. Simple process, low investment, no need for drying, low energy consumption, etc., but its product appearance is rough, easy to break, and users are not very welcome. At the same time, according to the requirements of my country's organic-inorganic compound fertilizer standard GB18877, the moisture content of the product should be controlled at 10%. Below, but under this condition, the extrusion granulation efficiency is very low, and the wear of the mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00C05G5/00C05C9/00C05B1/02C05B7/00C05D1/02C05B9/00
Inventor 马军伟叶雪珠汪建妹何念祖
Owner ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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