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Elastic folding stirring paddle for strengthening phosphorite acidolysis

A stirring paddle, acid hydrolysis technology, applied in mixers with rotating stirring devices, dissolution, chemical instruments and methods, etc., can solve the problems of large centrifugal force, radial solid concentration difference, high solid content, and achieve strong cutting effect, The effect of increasing the degree of turbulence and increasing the degree of chaotic mixing

Pending Publication Date: 2022-07-29
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional rigid stirring reactor tends to form an axisymmetric flow field during the stirring process, which hinders the mixing effect of the solid-liquid two phases. The traditional rigid and flexible stirring paddle tends to generate a large centrifugal force during the rotation, making the near wall of the stirring tank The solid content is higher, and there is a large difference in the radial solid concentration

Method used

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  • Elastic folding stirring paddle for strengthening phosphorite acidolysis
  • Elastic folding stirring paddle for strengthening phosphorite acidolysis
  • Elastic folding stirring paddle for strengthening phosphorite acidolysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] An elastic folding stirring paddle for strengthening the acid hydrolysis of phosphate rock, is characterized in that: comprising a holder 1, a stirring shaft 2, two groups of rigid stirring paddles 6 and a group of coil springs 7;

[0045] The fixing base 1 is connected with the stirring shaft 2 as a whole; the fixing base 1 is connected with an external motor to drive the stirring shaft 2 to rotate; in the embodiment, the fixing base 1 is a cylindrical structure with four circular holes inside ; The fixing base 1 is connected with the stirring shaft 2 as a whole; the fixing base 1 can be connected with an external motor through screws;

[0046]Two groups of rigid stirring paddles 6 are connected around the stirring shaft 2; a group of rigid stirring paddles 6 includes several rigid blades 8 that are radially connected around the stirring shaft 2; each rigid blade 8 includes three parts, denoted as connecting parts 801 , a first bending part 802 and a second bending par...

Embodiment 2

[0052] The main structure of this embodiment is the same as that of Embodiment 1, and further, the length ratio of the connecting portion 801 , the first bending portion 802 and the second bending portion 803 is 18:7:7. The height to length ratio of the connecting portion 801 is 1.2:14. The height to length ratio of the connecting portion 802 is 1.2:7. The height and length ratio of the connecting portion 803 is 1.1:7. The above "length" is measured from the end close to the stirring shaft 2 and ends at the end far from the stirring shaft 2 . The above "height" is measured from the end close to the fixing base 1 and ends at the end far from the fixing base 1 .

Embodiment 3

[0054] The main structure of this embodiment is the same as that of Embodiment 1 or 2, and further, a set of rigid stirring paddles 6 includes a shaft sleeve 9; the rigid blade 8 is connected to the stirring shaft 2 through the shaft sleeve 9;

[0055] The shaft sleeve 9 is sleeved on the stirring shaft 2, and each rigid blade 8 is connected to the shaft sleeve 9 obliquely; during stirring, the water-facing surface of the connecting portion 801 of the rigid The downstream surface is inclined downward; the angle between the lower end of the upstream surface of the connection portion 801 of the rigid blade 8 and the horizontal plane is 45°.

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Abstract

The invention discloses an elastic folding stirring paddle for strengthening phosphorite acidolysis, which is characterized in that a motor drives the stirring paddle to rotate in a stirring tank, so that a solid-liquid mixture in the tank obtains mechanical energy, and the mixing process of materials in the stirring tank is strengthened. Compared with the prior art, the folding blades in the elastic folding stirring paddle can effectively improve the energy transfer rate of the exteriors of the blades and the tail ends of the blades, mechanical energy can be better converted into fluid kinetic energy, then the kinetic energy obtained by fluid is larger, and chaos mixing of substances can be enhanced more easily; in the phosphorite acidolysis process, the viscosity of a solid-liquid mixture in the tank is large, and flexible parts are additionally arranged between the rigid stirring paddles, so that a chaos isolation area of fluid can be effectively damaged, the turbulence degree of the fluid between the two rigid paddles can be improved, the paddle energy transfer process can be enhanced, the mixing efficiency can be improved, and the phosphorite acidolysis time can be shortened.

Description

technical field [0001] The invention relates to the field of wet-process phosphoric acid leaching and the field of stirring paddles, in particular to an elastically folded stirring paddle for strengthening acid hydrolysis of phosphate rock. Background technique [0002] Stirred reactors are widely used in petroleum, chemical, metallurgy, pharmaceutical and other industries. Its working principle is to input mechanical energy into the mixing system in the stirring tank through the rotation of the stirring paddle, strengthen the heat and mass transfer in the reaction process, and accelerate the production of products. Phosphoric acid stirring reactor is one of the key equipments in the production process of wet phosphoric acid. Its main purpose is to strengthen the mixing of sulfuric acid and phosphate rock, speed up the reaction rate and reduce the reaction time. [0003] The traditional rigid stirring reactor is easy to form an axisymmetric flow field during the stirring pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F27/054B01F27/90B01F27/112B01F27/17
CPCB01F27/0541B01F27/90B01F27/112B01F27/17
Inventor 刘仁龙刘欣刘作华陶长元杜军郑国灿周雨荷岑少斗龙有钦霍学坚
Owner CHONGQING UNIV
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