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Phosphogypsum granulation system

A phosphogypsum and granulation technology, which is applied to the granulation method of raw materials, granulation in static tanks/troughs, chemical instruments and methods, etc., can solve the problems of low ball strength and easy pulverization, and achieve granule The effect of uniformity, moderate strength and excellent performance

Active Publication Date: 2020-11-10
SINOCHEM YUNLONG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a phosphogypsum granulation system to solve the ubiquitous problems of low ball strength and easy pulverization of phosphogypsum if no binder is added in the granulation process

Method used

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  • Phosphogypsum granulation system
  • Phosphogypsum granulation system
  • Phosphogypsum granulation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The pre-homogenized gypsum with a water content of 8% and the modified neutralizer are transferred from the phosphogypsum conveying leather conveyor 1 to the phosphogypsum mechanical unloading bin 2. At this time, the unloading bin door is closed, and the phosphogypsum mechanical unloading bin 2, the included angle between one wall surface and the horizontal plane is 90°, and the angles between the other three wall surfaces and the horizontal plane are 70°, 70° and 80° respectively. When the amount of phosphogypsum in the discharge bin reaches the predetermined value Finally, the discharge bin door is opened, the opening angle between the discharge plate and the discharge wall with hinged end is 120°, and the phosphogypsum enters the phosphogypsum high differential speed mixing granulator 3.

[0046] The high-speed rotor drive motor in the phosphogypsum high differential speed mixing granulator 3 drives the granulation rotor group (including granulation stirring blades, ...

Embodiment 2

[0050] The pre-homogenized gypsum with a water content of 11% and the modified neutralizer are transferred from the phosphogypsum conveyor belt conveyor 1 to the phosphogypsum mechanical discharge bin 2. At this time, the discharge bin door is closed, and the phosphogypsum mechanical discharge bin 2, the included angle between one wall surface and the horizontal plane is 90°, and the angles between the other three wall surfaces and the horizontal plane are 75°, 75° and 84° respectively. When the amount of phosphogypsum in the discharge bin reaches the predetermined value Finally, the door of the discharge bin is opened, and the opening angle between the discharge plate and the discharge wall with a hinged end is 135°, and the phosphogypsum enters the phosphogypsum high differential speed mixing granulator 3.

[0051] The high-speed rotor drive motor in the phosphogypsum high differential speed mixing granulator 3 drives the granulation rotor group (including granulation stirrin...

Embodiment 3

[0055] The pre-homogenized gypsum with a water content of 18% and the modified neutralizer are transferred from the phosphogypsum conveyor belt conveyor 1 to the phosphogypsum mechanical discharge bin 2. At this time, the discharge bin door is closed, and the phosphogypsum mechanical discharge bin 2, the angle between one wall surface and the horizontal plane is 90°, and the angles between the other three wall surfaces and the horizontal plane are 80°, 80° and 90° respectively. When the amount of phosphogypsum in the discharge bin reaches the predetermined value Finally, the door of the discharge bin is opened, and the opening angle between the discharge plate and the discharge wall with a hinged end is 155°, and the phosphogypsum enters the phosphogypsum high differential speed mixing granulator 3.

[0056] The high-speed rotor drive motor in the phosphogypsum high differential speed mixing granulator 3 drives the granulation rotor group (including granulation stirring blades,...

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Abstract

The invention discloses an ardealite granulation system which comprises an ardealite conveying belt conveyor, an ardealite mechanical discharging bin, an ardealite high-differential granulator, a granulator discharging conveying belt conveyor, a granulation screening machine and an ardealite ball semi-finished product conveying belt conveyor which are sequentially arranged. The returned material outlet of the granulation screening machine is connected with a phosphogypsum mechanical unloading bin through a screening returned material conveying belt conveyor and a screening returned material elevator. The system is provided on the basis of fully researching the characteristics and granulation characteristics of the phosphogypsum material, wherein by using the phosphogypsum high-differentialgranulator without addition of other binders, the problems that when an existing granulation technology is applied to phosphogypsum, the granulation strength is low, and pulverization is likely to happen can be solved.

Description

technical field [0001] The invention relates to the field of comprehensive utilization of phosphogypsum, in particular to a phosphogypsum granulation system. Background technique [0002] Phosphogypsum is a by-product of sulfuric acid extraction of phosphoric acid production, every 1tP produced 2 o 5 4.5-5.5 tons of phosphogypsum will be produced. Compared with natural gypsum, phosphogypsum contains a small amount of impurities such as insoluble phosphorus, soluble phosphorus, fluoride and organic matter, and cannot be directly utilized. [0003] Most foreign countries mainly deal with phosphogypsum by stockpiling. At present, there are huge phosphogypsum stockpiles in more than 50 countries including the United States, France, Brazil and Australia. The main method of processing phosphogypsum in my country is also the storage method, with an annual discharge of about 70 million tons, which brings huge pressure to the environment, society and phosphorus chemical companies....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J2/10B01J2/00
CPCB01J2/10B01J2/00Y02W30/91
Inventor 盛勇董建鹏陈少华马先林熊柏年张长明
Owner SINOCHEM YUNLONG