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High tower graining method for producing composite (mixed) fertilizer

A high-tower granulation and granulation technology, which is applied in the direction of fertilizer forms, fertilization devices, fertilizer mixtures, etc., can solve the problems of unadjustable viscosity, poor product quality, and product variety restrictions, and achieve reduced steam loss and high pelleting rate , the effect of many product varieties

Active Publication Date: 2010-05-12
广东福利龙复合肥有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

Therefore, the viscosity of the dissolution and buffer tank in the traditional method cannot be adjusted, resulting in poor product quality, and the variety of products produced by a set of equipment is greatly limited.

Method used

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  • High tower graining method for producing composite (mixed) fertilizer
  • High tower graining method for producing composite (mixed) fertilizer
  • High tower graining method for producing composite (mixed) fertilizer

Examples

Experimental program
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Embodiment Construction

[0011] Reference figure 1 ; Transport the liquid material (liquid urea or liquid ammonium nitrate) to the controllable mixing buffer device 1, add normal temperature solid material potassium sulfate or potassium chloride to mix, according to the ratio of the normal temperature solid material to the liquid material, through the controllable mixing buffer Device 1, to keep the temperature of the suspension material within a certain range, pump 2 to the controllable mixing buffer device 1 at the top of the prilling tower 4, and add normal temperature solid material phosphate fertilizer (monoammonium phosphate or diammonium phosphate), The temperature of the material is controlled by the controllable mixing buffer device 1 to ensure its proper granulation temperature, and finally the suspension material enters the granulator for granulation.

[0012] Reference figure 1 As shown, when the pump 1 for transporting ground suspension materials cannot be transported to the top of the prilli...

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Abstract

This invention discloses a method for producing compound (mixed) fertilizer pellets in pelletization column. The method comprises: sending liquid raw materials into a dissolution and buffer tank, adding normal temperature solid raw materials (K2SO4 or KCl), pumping into a mixing, dissolution and buffer tank at the top of the pelletization column, adding normal temperature solid raw materials phosphorus fertilizer, controlling the temperature, adding the raw materials into a pelletizer, and palletizing. The raw material temperature is controlled by adjusting the steam heating pipe in the dissolution and buffer tank, thus can achieve optimal pelletization effect. The open stages of the dissolution and buffer tank can be adjusted according to the liquid surface height, thus can control raw material melt viscosity as well as the pelletization effect. The product has high pelletization rate, good pellet quality, low steam loss, and low energy consumption.

Description

Technical field [0001] The patent of the invention relates to a composite (mixed) fertilizer manufacturing technology, in particular to a material dissolution, heat preservation, mixing and multi-stage conveying technology in the production of composite (mixed) fertilizer high tower granulation. Background technique [0002] At present, in the high-tower granulation production of compound (mixed) fertilizer, the number of steam pipes is fixed in the material dissolution and buffer tanks, and the temperature in the tank is not adjustable. At different temperatures, materials have different viscosities; each type of compound fertilizer has its most suitable granulation viscosity. Therefore, the viscosity of the dissolution and buffer tanks in the traditional method cannot be adjusted, resulting in poor product quality, and the variety of products produced by a set of equipment is greatly restricted. Summary of the invention [0003] The purpose of the present invention is to provid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G5/00
CPCY02P20/10
Inventor 危敬权张松鸿
Owner 广东福利龙复合肥有限公司
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