A red phosphorus raw material pretreatment ball mill device
By designing a ball milling device for pretreatment of red phosphorus raw materials, and utilizing ball displacement grinding and filter heating drying, the problems of high cost and safety hazards in the recrystallization process of red phosphorus were solved, and the grinding efficiency and purity were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI CHANGHUAI NEW MATERIALS CO LTD
- Filing Date
- 2025-07-18
- Publication Date
- 2026-06-26
Smart Images

Figure CN224405259U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of new material processing technology, and in particular to a ball milling device for pretreatment of red phosphorus raw materials. Background Technology
[0002] Red phosphorus, as the only stable form of phosphorus allotrope, will demonstrate three core values in 2025: semiconductor-grade purity: electron mobility exceeding 1500 cm² / (V·s), flame retardancy: thermal decomposition temperature increased to 450℃, smoke density reduced to 12%, and energy carrier: phosphorus-nitrogen chemical hydrogen storage density reaches 7.2wt%.
[0003] Red phosphorus can be recrystallized into high-purity, high-crystallinity black phosphorus crystals by adding catalysts such as mercury, bismuth, and SnI to red phosphorus and heating it at a temperature not exceeding 1000°C, without the need for ultra-high pressure, thus reducing costs and safety hazards. Therefore, this application discloses a ball milling device for pretreatment of red phosphorus raw materials. Utility Model Content
[0004] The purpose of this invention is to address existing problems by providing a ball milling device for pretreatment of red phosphorus raw materials.
[0005] This utility model is achieved through the following technical solution: a ball milling device for pretreatment of red phosphorus raw materials, including a frame, a machine chamber is provided on the upper part of the frame, a ball milling cylinder is provided in the machine chamber, a rotating shaft is rotatably provided in the ball milling cylinder, a plurality of stirring rods are evenly connected on the rotating shaft, a motor is connected to one end of the rotating shaft, the motor is mounted on a side frame, the side frame is connected to the outside of the machine chamber, a handle is provided in the middle of the frame, the handle is provided on the discharge pipe of the ball milling cylinder, the discharge pipe is connected to the upper end of the spiral tube, a heating wire is threaded around the spiral tube, and the spiral tube is provided in the lower box of the frame.
[0006] As a further improvement to the above solution, the ball mill cylinder is filled with several grinding balls, the upper part of the ball mill cylinder is connected to the feed pipe, and the lower part of the ball mill cylinder is connected to the discharge pipe.
[0007] The grinding balls move and displace within the grinding cylinder to grind the material entering from the feed pipe, and finally fall out from the discharge pipe.
[0008] As a further improvement to the above solution, the amount of grinding balls is less than half the volume of the inner cavity of the grinding cylinder, and the top of the grinding balls is lower than the rotating shaft.
[0009] To avoid insufficient movement of the grinding balls and excessive grinding balls affecting the grinding efficiency.
[0010] As a further improvement to the above solution, a filter screen is provided at the upper end of the discharge pipe, a valve plate is provided inside the discharge pipe, the valve plate is connected to the rotating rod, and the rotating rod is connected to the handle.
[0011] Materials are filtered through a filter screen to prevent large particles and grinding balls from falling from the discharge pipe. Additionally, the discharge speed is controlled by adjusting the angle of the valve plate via a handle.
[0012] As a further improvement to the above solution, the feed pipe is connected to a hopper, which is located above the machine compartment;
[0013] The material is fed into the hopper and falls into the ball mill cylinder through the feed pipe.
[0014] As a further improvement to the above solution, a reducing pipe is provided at the lower end of the spiral tube, and the reducing pipe is connected to the discharge pipe port through a flange;
[0015] The reducing pipe effectively connects the discharge pipe and the spiral pipe, allowing the material falling from the discharge pipe to smoothly enter the spiral pipe. The material falls smoothly into the spiral pipe, increasing the time for charging and heating.
[0016] Compared with the prior art, this utility model has the following advantages: it has a simple structure, reasonable design, and novel and unique concept. The motor drives the rotating shaft to rotate inside the ball mill cylinder, and the stirring rod also rotates inside the ball mill cylinder with the rotating shaft. The rotation of the stirring rod inside the ball mill cylinder moves and displaces the grinding balls inside. After the material is ground by the relative displacement of the grinding balls, it is filtered through the filter screen and slowly falls into the spiral tube. During this process, it is heated and dried by the heating wire, and the box body is used for heat preservation to avoid heat loss. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model.
[0018] Figure 2 A schematic diagram of the structure for installing the ball mill cylinder and spiral tube inside the frame.
[0019] Figure 3 This is a cross-sectional view of the ball mill cylinder.
[0020] Figure 4 This is a schematic diagram of the structure of a ball mill cylinder filled with grinding balls.
[0021] Figure 5 This is a schematic diagram of a structure in which heating wires are wound around the cross-section of a spiral tube. Detailed Implementation
[0022] The present invention will be further described below with reference to the accompanying drawings.
[0023] like Figures 1 to 5As shown, a ball milling device for pretreatment of red phosphorus raw materials includes a frame 1, a chamber 2 is provided on the upper part of the frame 1, a ball milling cylinder 5 is provided in the chamber 2, a rotating shaft 12 is rotatably provided in the ball milling cylinder 5, a plurality of stirring rods 13 are evenly connected on the rotating shaft 12, one end of the rotating shaft 12 is connected to a motor 10, the motor 10 is mounted on a side frame 11, the side frame 11 is connected to the outside of the chamber 2, a handle 3 is provided in the middle of the frame 1, the handle 3 is provided on the discharge pipe 52 of the ball milling cylinder 5, the discharge pipe 52 is connected to the upper end of the spiral tube 8, a heating wire 14 is threaded on the spiral tube 8, and the spiral tube 8 is provided in the lower box 4 of the frame 1.
[0024] As a further improvement to the above scheme, the ball mill cylinder 5 is filled with a number of grinding balls 15, the upper part of the ball mill cylinder 5 is connected to the feed pipe 51, and the lower part of the ball mill cylinder 5 is connected to the discharge pipe 52.
[0025] The grinding balls 15 move and displace within the grinding cylinder 5 to grind the material that enters from the feed pipe 51 into the grinding cylinder 5, and finally fall out from the discharge pipe 52.
[0026] As a further improvement to the above scheme, the filling amount of the grinding ball 15 is less than half of the inner cavity volume of the ball mill cylinder 5, and the top of the grinding ball 15 is lower than the rotating shaft 12.
[0027] To avoid insufficient movement of the grinding balls 15 and excessive quantity of grinding balls 15 affecting the grinding efficiency of the material.
[0028] As a further improvement to the above solution, a filter screen 53 is provided at the upper end of the discharge pipe 52, a valve plate 54 is provided inside the discharge pipe 52, the valve plate 54 is connected to the rotating rod 55, and the rotating rod 55 is connected to the handle 3.
[0029] The material is filtered by the filter screen 53 to prevent large particles and grinding balls 15 from falling from the discharge pipe 52. In addition, the valve plate 54 is rotated by the handle 3 to control the discharge speed.
[0030] As a further improvement to the above solution, the feed pipe 51 is connected to the hopper 6, and the hopper 6 is located above the machine compartment 2.
[0031] The material is fed into the hopper 6 and falls into the ball mill cylinder 5 through the feed pipe 51.
[0032] As a further improvement to the above scheme, a reducing pipe 9 is provided at the lower end of the spiral pipe 8, and the reducing pipe 9 is connected to the port of the discharge pipe 52 through the flange 7.
[0033] The reducing pipe 9 effectively connects the discharge pipe 52 and the spiral pipe 8, allowing the material falling from the discharge pipe 52 to smoothly enter the spiral pipe 8. The material falls smoothly into the spiral pipe 8, increasing the time for charging and providing sufficient heating time.
[0034] The working principle of a ball mill device for pretreatment of red phosphorus raw materials: The motor 10 drives the rotating shaft 12 to rotate inside the ball mill cylinder 5. The stirring rod 13 also rotates inside the ball mill cylinder 5 along with the rotating shaft 12. The rotation of the stirring rod 13 inside the ball mill cylinder 5 causes the grinding balls 15 inside to move and displace. After the material is ground by the relative displacement of the grinding balls 15, it is filtered by the filter screen 53 and slowly falls into the spiral tube 8. During this process, it is heated and dried by the heating wire 14, and the box body 4 is used for heat preservation to avoid heat loss.
[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A ball milling apparatus for pretreatment of red phosphorus raw materials, comprising a frame, characterized in that, The upper part of the frame is equipped with a machine compartment, and a ball mill cylinder is installed inside the machine compartment. A rotating shaft is installed inside the ball mill cylinder, and several stirring rods are evenly connected to the rotating shaft. One end of the rotating shaft is connected to a motor, which is mounted on a side frame. The side frame is connected to the outside of the machine compartment. A handle is installed in the middle of the frame and is located on the discharge pipe of the ball mill cylinder. The discharge pipe is connected to the upper end of the spiral tube. A heating wire is threaded around the spiral tube, which is located in the lower box of the frame.
2. The ball milling apparatus for pretreatment of red phosphorus raw materials according to claim 1, characterized in that, The ball mill cylinder is filled with several grinding balls. The upper part of the ball mill cylinder is connected to a feed pipe, and the lower part of the ball mill cylinder is connected to a discharge pipe.
3. The ball milling apparatus for pretreatment of red phosphorus raw materials according to claim 2, characterized in that, The amount of grinding balls is less than half the volume of the inner cavity of the grinding cylinder, and the top of the grinding balls is lower than the rotating shaft.
4. The ball milling apparatus for pretreatment of red phosphorus raw materials according to claim 2, characterized in that, A filter screen is installed at the upper end of the discharge pipe, and a valve plate is installed inside the discharge pipe. The valve plate is connected to a rotating rod, and the rotating rod is connected to a handle.
5. The ball milling apparatus for pretreatment of red phosphorus raw materials according to claim 2, characterized in that, The feed pipe is connected to the hopper, which is located above the machine compartment.