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Round granule ore fertilizer pelleting process and device

A technology of mineral fertilizers and round granules, applied in fertilization devices, inorganic fertilizers, calcium fertilizers, etc., can solve the problems of low strength, broken granules, and low yield of round granule mineral fertilizers, so as to improve the pelleting rate and reduce heat. Load, the effect of reducing the amount of water added

Active Publication Date: 2017-03-15
TIANJIN CEMENT IND DESIGN & RES INST +1
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AI Technical Summary

Problems solved by technology

The existing mineral fertilizer granulation process on the market basically adopts the process steps of disc granulation, rotary drying, rotary cooling, and finished product screening, but the particle breakage is serious during the drying process of the rotary dryer. The yield of the process is low and the strength of round particle mineral fertilizers is generally low

Method used

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  • Round granule ore fertilizer pelleting process and device

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Embodiment Construction

[0025] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0026] A kind of round particle mineral fertilizer granulation process, comprises the following steps:

[0027] 1) Raw material batching: the powdery mineral fertilizer and granulation additives are used to measure and batch the raw materials according to a certain proportion;

[0028] 2) Stirring and mixing: each prepared material is mixed and stirred evenly in the mixer to obtain the mixed material;

[0029] 3) Granulation: transport the mixed material to the disc granulator for spray granulation, and the wet granules are discharged from the discharge port of the granulation disc;

[0030] 4) Screening of wet granules: pass the above wet granules through a grading drum sieve, and sieve them into three parts with a particle size of 5mm resp...

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Abstract

The invention discloses a round granule ore fertilizer pelleting process which comprises the following steps: I) preparing raw materials; II) performing stirring mixing; III) performing pelleting; IV) screening wet granules; V) performing first-stage drying; VI) performing second-stage drying; VII) cooling; VIII) screening a finished product; IX) packaging the finished product. The invention further discloses a pelleting device with the process. The pelleting device comprises a mixing machine, a disc pelleting machine, a staged rotary screen, a rotary drying machine, a vibration fluid bed dryer, a rotary cooling machine and a vibration screen. The round granular ore fertilizer pelleting process is high in pelleting disc balling yield, low in granule crushing rate in the drying procedure, high in yield of the whole system, advanced in pelleting process, low in drying cost, small in water amount, high in granule strength of a round granule ore fertilizer product, good in sphericity degree and high in market acceptance degree.

Description

technical field [0001] The invention belongs to the technical field of mineral fertilizers (soil conditioners), in particular to a granulation process and device for round particle mineral fertilizers. Background technique [0002] Mineral fertilizer is a new type of fertilizer made of natural minerals such as zeolite, medical stone, calcite, and potassium feldspar as the main raw materials. Among them, silicon fertilizer, silicon calcium fertilizer, silicon calcium potassium fertilizer, silicon calcium potassium magnesium fertilizer, and potassium calcium fertilizer , Potassium-silicon fertilizer, potassium-silicon-calcium fertilizer, etc. belong to one of the large categories. The main nutrients of this type of mineral fertilizer are available silicon oxide, available calcium oxide, available potassium oxide, and available magnesium oxide that can be absorbed by plant roots. Including derivative products based on such fertilizers. [0003] With the extensive use of nitrog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00
CPCC05D1/00C05D1/04C05D3/00C05D5/00C05D9/00
Inventor 吴锡林万夫伟李小燕张明飞孙怀涛
Owner TIANJIN CEMENT IND DESIGN & RES INST
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