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Horizontal Mechanochemical Ball Mill and Its Forming Process Parameter Analysis Method

A mechanochemical and analytical method technology, applied in the field of horizontal mechanochemical ball milling device and its forming process parameter analysis, can solve the problems of only considering the collision, ignoring the collision between the ball and other contact surfaces, etc., so as to improve the structural strength and improve the collision energy. , the effect of increasing the contact area

Active Publication Date: 2021-08-24
INST OF SOIL SCI CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In both models, the impact of ball milling parameters on the collision energy is well predicted, however both models only consider ball-to-ball collisions and ignore ball-to-other contact surfaces

Method used

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  • Horizontal Mechanochemical Ball Mill and Its Forming Process Parameter Analysis Method
  • Horizontal Mechanochemical Ball Mill and Its Forming Process Parameter Analysis Method
  • Horizontal Mechanochemical Ball Mill and Its Forming Process Parameter Analysis Method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Use mechanical design software (Solidworks) to build a physical model, set the inner length of the cylinder to 1600mm, the inner diameter to 1000mm, the outer length to 1700mm, and the outer diameter to 1100mm; the length of the main shaft to 1700mm, and the diameter to 150mm; 150mm, all blades are installed on the main shaft.

[0035] Among them, the number of blade groups is 48 groups, the total filling rate is 5%, and the blade width is 10mm. Gradient change blade fan ring angle 10°-50°, respectively import the built model into the discrete element software (DEM) to generate 3000 stainless steel grinding balls, the diameter of the grinding ball is 30mm, the spindle speed is 250mm, set the running time 0-6s, and complete the simulation After the process, output the relative velocity v of the normal phase between the ball and the ball, the ball and the blade, and the ball and the inner wall of the cylinder N and the collision frequency N, so as to calculate the total ...

Embodiment 2

[0038] Use mechanical design software (Solidworks) to build a physical model, set the inner length of the cylinder to 1600mm, the inner diameter to 1000mm, the outer length to 1700mm, and the outer diameter to 1100mm; the length of the main shaft to 1700mm, and the diameter to 150mm; 150mm, all blades are installed on the main shaft.

[0039] Among them, the blade fan ring angle is 30°, the blade filling rate is set to 2.5%, 5%, 10%, and 15%, respectively, and the number of blade groups is set to 16, 24, 32, and 48 under each group of filling rate. The built model is imported into the discrete element software (DEM) to generate 3000 stainless steel balls, the diameter of the grinding ball is 30mm, the spindle speed is 250rpm, and the running time is set to 0-6s. After the simulation process is completed, the output of balls and balls, balls and blades, balls and cylinders The normal phase relative velocity v of the wall N and the collision frequency N, so as to calculate the ...

Embodiment 3

[0050] The traditional horizontal ball mill installs all the blades on the main shaft, and relies on the rotation of the main shaft to drive the blades to drive the balls. In this example, the operation mode of the traditional horizontal ball mill is used as the control group, and some blades are installed on the cylinder wall to realize the independent movement of the cylinder wall and the main shaft. The simulation simulates the following three operation modes: ① all blades are installed on the main shaft, and only the main shaft rotates; ② half of the blades are installed on the cylinder, the cylinder remains stationary, and only the main shaft rotates; ③ half of the blades are installed on the cylinder, and both the cylinder and the main shaft rotate , and the speed is the same and the direction is opposite. The shape of the blade, the number of groups and the filling rate are all the same as in Example 2, and 16 groups of physical models are imported into the discrete ele...

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Abstract

The horizontal mechanochemical ball milling device and its forming process parameter analysis method include a cylinder body, a main shaft, a blade group, a ball mill cover and a discharge cover. The cylinder body and the main shaft are coaxially arranged and rotate independently of each other. Inlet and outlet, the blade group is composed of blades, the blades are curved, and equidistantly distributed on the inner side of the cylinder and on the main shaft, the cylinder is provided with a discharge port, and the discharge cover is set on the discharge On the mouth, the ball mill cover is located above the discharge cover. The invention overcomes the shortcomings of the original equipment at home and abroad, such as oversimplification of the collision theory model in the ball milling process, low system collision energy, high temperature generated by continuous operation, and excessive equipment operation noise, etc. The hollow structure can increase the effective collision energy of the system to improve the efficiency of mechanochemical reaction under different ball milling process parameters.

Description

technical field [0001] The invention belongs to the field of non-incineration treatment of POPs pollutants, and in particular relates to a horizontal mechanochemical ball mill and an analysis method for forming process parameters thereof. Background technique [0002] The mechanochemical ball milling method for treating POPs has gradually attracted people's attention because of its simplicity and high efficiency, and its laboratory research has also developed rapidly in recent years. Some scholars have screened different ball milling agents for different organic pollutants. For example, Cagnetta et al. used CaO ball milling to degrade PFOS, HCB and HBCDD, Song Jing et al. used Fe-Zn ball milling to degrade DDT, and Chen Zhiliang et al. used CaO-Al ball milling to treat PCDD, they have also carried out research on the degradation mechanism and pathway of POPs treated with common ball milling agents (CaO, Fe, Fe-SiO2, etc.), and some scholars have even made resource utilizatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B02C17/10B02C17/16B02C17/18B02C17/22B02C17/24
CPCB02C17/10B02C17/163B02C17/1805B02C17/1815B02C17/183B02C17/22B02C17/24
Inventor 高新宋静
Owner INST OF SOIL SCI CHINESE ACAD OF SCI
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