阅读说明：本技术 一种球磨机 (Ball mill ) 是由 姚夏妍 王军辉 王源瑞 牛永胜 鲁兴武 程亮 李俞良 李银丽 于 2020-05-22 设计创作，主要内容包括：本发明提供了一种球磨机,其特征在于：所述球磨机包括底座、搅拌桶、搅拌装置,待研磨物料位于所述搅拌桶中,所述搅拌装置包括回转电机、设置在该回转电机传动轴上的螺纹状搅拌桨,所述回转电机工作时传动轴的回转方向与所述螺纹状搅拌桨的螺纹方向一致,所述搅拌桶上设置有位于搅拌桶外壁上的条状磁铁,所述搅拌桶内静置有受所述条状磁铁磁力感应自转的若干磁性钢球。本发明可提高物料的分散性能,降低出浆难度,降低能耗和研磨时间；有利于研磨体、物料与内筒体内壁碰撞研磨,其研磨均匀度及研磨效率均较高,可实现物料的超细化处理；可抑制原料发生二次水化作用,不会造成物料发生二次污染。(The invention provides a ball mill, which is characterized in that: the ball mill includes base, agitator, agitating unit, treats that the grinding material is located in the agitator, agitating unit includes rotating electrical machines, sets up at this rotating electrical machines epaxial screw thread form stirring rake, the direction of rotation of rotating electrical machines during operation transmission shaft with the screw thread direction of screw thread form stirring rake is unanimous, be provided with the strip magnet that is located on the agitator outer wall on the agitator, it has received to stew in the agitator a plurality of magnetism steel balls of strip magnet magnetic force response rotation. The invention can improve the dispersion performance of materials, reduce the slurry outlet difficulty, and reduce the energy consumption and the grinding time; the grinding body and the material are favorably collided and ground with the inner wall of the inner cylinder body, the grinding uniformity and the grinding efficiency are higher, and the superfine treatment of the material can be realized; can inhibit the raw materials from secondary hydration, and can not cause the materials to generate secondary pollution.)

1. A ball mill characterized in that: the ball mill includes the base, sets up agitator on the base, sets up the agitating unit at this agitator upper shed department, waits to grind the material and is located in the agitator, agitating unit includes rotating electrical machines, sets up at this rotating electrical machines epaxial screw thread form stirring rake, the direction of rotation of rotating electrical machines during operation transmission shaft with the screw thread direction of screw thread form stirring rake is unanimous, be provided with the strip magnet that is located on the agitator outer wall on the agitator, it receives to stew in the agitator a plurality of magnetism steel balls of strip magnet magnetic force response rotation.

2. A ball mill according to claim 1, wherein: the stirring barrel is provided with 3 strip magnets on the outer wall, and the number of the strip magnets is 3, and the strip magnets are 120 by taking the central axis of a transmission shaft of the rotary motor as the central axis^oArranged at equal angles.

3. A ball mill according to claim 1, wherein: the material to be ground rolls in a magnetic induction line environment formed by the magnetic steel ball and an external magnetic field, the magnetic field intensity is 0.8T-1.2T, the length of the strip-shaped magnet is the same as the height of the stirring barrel, and the length, width and height ratio of the strip-shaped magnet is 10: 1: 2.

4. a ball mill according to claim 1, wherein: the volume ratio of the materials to be ground in the stirring barrel to the magnetic steel ball and the water is 2: 2: 1.

5. a ball mill according to claim 1, wherein: the magnetic steel ball is a ball coated with wear-resistant, corrosion-resistant and high-temperature-resistant materials on the surface of a magnet, the diameter of the magnetic steel ball is 3-5 mm, the magnet is made of neodymium iron boron, the surface of the magnet is coated with the steel ball, and the surface of the steel ball is coated with a ceramic material.

6. A ball mill according to claim 1, wherein: height of the mixing tank: the diameter of the stirring barrel: the major diameter of the thread-shaped stirring paddle is as follows: small diameter of the thread-shaped stirring paddle: pitch of the screw-like stirring paddle: the screw-thread paddle lead was 20: 10: 6: 1: 6.

7. a ball mill according to claim 1, wherein: the stirring speed of the rotary motor is 150 r/min-200 r/min, and the grinding time is 0.5-1.5 h.

8. A ball mill according to claim 1, wherein: the magnetic steel balls, the materials to be ground and water are sequentially arranged in the mixing tank in sequence, and the materials to be ground entering the mixing tank are sieved by a sieve with the fineness of 1000 meshes.

Technical Field

The invention relates to a ball mill, in particular to a ball mill for high-efficiency refining treatment of materials.

Background

The wet grinding treatment technology is widely applied to the fields of smelting buildings and the like, the traditional wet grinding treatment process mainly faces the problems of low efficiency, high energy consumption, low material dispersion performance and difficult slurry discharge caused by the increase of material viscosity in the grinding process, and the final result is that the material refining degree is limited. At present, researchers take specific measures through specific boredom, wherein the measures comprise methods of adding chemical reagents, increasing grinding time, improving grinding strength and the like, and the methods are poor in adaptability of the added chemical reagents and high in dependence on raw material components, and can influence the next process to cause secondary pollution to the raw materials. Other measures can cause unexpected results, such as increasing the grinding time sometimes increases the viscosity of the raw material to cause a physicochemical reaction, such as promoting secondary hydration, changing the pH, promoting oxidation, and the like.

Disclosure of Invention

The invention aims to solve the technical problem of the prior art and provides a ball mill, which has the following specific scheme:

the invention relates to a ball mill, which is characterized in that: the ball mill includes the base, sets up agitator on the base, sets up the agitating unit at this agitator upper shed department, waits to grind the material and is located in the agitator, agitating unit includes rotating electrical machines, sets up at this rotating electrical machines epaxial screw thread form stirring rake, the direction of rotation of rotating electrical machines during operation transmission shaft with the screw thread direction of screw thread form stirring rake is unanimous, be provided with the strip magnet that is located on the agitator outer wall on the agitator, it receives to stew in the agitator a plurality of magnetism steel balls of strip magnet magnetic force response rotation.

The technical problem to be solved by the invention can be further solved by adopting the following technical scheme that 3 strip magnets are arranged on the outer wall of the stirring barrel, and the 3 strip magnets form a 120-degree angle with each other by taking the central axis of a transmission shaft of a rotary motor as a central axis^oArranged at equal angles.

The technical problem to be solved by the invention can be further realized by the following technical scheme that the material to be ground rolls in a magnetic induction line environment formed by the magnetic steel ball and an external magnetic field, the magnetic field intensity is 0.8T-1.2T, the length of the strip-shaped magnet is the same as the height of the stirring barrel, and the length-width-height ratio of the strip-shaped magnet is 10: 1: 2.

the technical problem to be solved by the invention can be further realized by the following technical scheme that the volume ratio of the material to be ground in the stirring barrel to the magnetic steel ball and the water is 2: 2: 1.

the technical problem to be solved by the invention can be further realized by the following technical scheme that the magnetic steel ball is a small ball with a magnet surface coated with a wear-resistant, corrosion-resistant and high-temperature-resistant material, the diameter of the magnetic steel ball is 3-5 mm, the magnet material is neodymium iron boron, the magnet surface is wrapped by the steel ball, and the steel ball surface is coated with a ceramic material.

The technical problem to be solved by the invention can be further realized by the following technical scheme that the stirring barrel is high: the diameter of the stirring barrel: the major diameter of the thread-shaped stirring paddle is as follows: small diameter of the thread-shaped stirring paddle: pitch of the screw-like stirring paddle: the screw-thread paddle lead was 20: 10: 6: 1: 6.

the technical problem to be solved by the invention can be further realized by the following technical scheme that the stirring speed of the rotary motor is 150 r/min-200 r/min, and the grinding time is 0.5-1.5 h.

The technical problem to be solved by the invention can be further realized by the following technical scheme that the magnetic steel balls, the material to be ground and water are sequentially arranged in the stirring barrel in sequence, and the material to be ground in the stirring barrel is sieved by a sieve with the fineness of 1000 meshes.

Compared with the prior art, the invention has the beneficial effects that: (1) the invention can improve the dispersion performance of materials, reduce the slurry outlet difficulty, and reduce the energy consumption and the grinding time; (2) the invention is beneficial to the collision grinding of the grinding body and the material with the inner wall of the inner cylinder body, has higher grinding uniformity and grinding efficiency, and can realize the superfine treatment of the material; (3) the invention can inhibit the raw material from secondary hydration and can not cause secondary pollution to the material.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of a ball mill according to the present invention.

In the figure: 1-base, 2-stirring barrel, 3-rotary motor, 4-screw stirring paddle, 5-bar magnet and 6-magnetic steel ball.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The ball mill comprises a base 1, a stirring barrel 2 arranged on the base and a stirring device arranged at an upper opening of the stirring barrel, wherein materials to be ground are positioned in the stirring barrel, the stirring device comprises a rotary motor 3 and a threaded stirring paddle 4 arranged on a transmission shaft of the rotary motor, the rotation direction of the transmission shaft is consistent with the thread direction of the threaded stirring paddle when the rotary motor works, a strip magnet 5 positioned on the outer wall of the stirring barrel is arranged on the stirring barrel, and a plurality of magnetic steel balls 6 which rotate under the magnetic force induction of the strip magnet are statically arranged in the stirring barrel. When the rotary motor works, the thread direction of the thread-shaped stirring paddle is consistent with the rotation direction of the stirring paddle, so that the material to be ground and the magnetic steel ball in the middle are driven to downwards roll, and the material to be ground and the magnetic steel ball at the bottom are extruded to upwards roll along the cylinder wall, so that the material to be ground is uniformly mixed.

The outer wall of the stirring barrel is provided with 3 strip magnets, and the 3 strip magnets form 120 parts with the central axis of the transmission shaft of the rotary motor as the central axis^oArranged at equal angles. The strip-shaped magnet is used for adjusting the motion track of the magnetic steel ball, so that the magnetic steel ball is enabled to rotate, the grinding degree is enhanced, meanwhile, a closed magnetic induction line is formed by an external magnetic field and the magnetic steel ball, water molecules are promoted to enter the dispersing performance of the materials under the action of the gradient force of the magnetic field, and in the process of stirring and rolling the materials to be ground, the magnetic force further improves the dispersing performance of the materials to be ground, and the slurry outlet difficulty is reduced.

The material to be ground rolls in a magnetic induction line environment formed by the magnetic steel ball and an external magnetic field, wherein the magnetic field intensity is 0.8T-1.2T, the length of the strip-shaped magnet is the same as the height of the stirring barrel, and the ratio of the length, the width and the height of the strip-shaped magnet is 10: 1: 2. the volume ratio of the materials to be ground in the stirring barrel to the magnetic steel ball and the water is 2: 2: 1. the magnetic steel ball is a small ball with the surface coated with a wear-resistant, corrosion-resistant and high-temperature-resistant material, the diameter of the magnetic steel ball is 3-5 mm, the magnet is made of neodymium iron boron, the surface of the magnet is coated with the steel ball, and the surface of the steel ball is coated with a ceramic material. Height of the mixing tank: the diameter of the stirring barrel: the major diameter of the thread-shaped stirring paddle is as follows: small diameter of the thread-shaped stirring paddle: pitch of the screw-like stirring paddle: the screw-thread paddle lead was 20: 10: 6: 1: 6. the stirring speed of the rotary motor is 150 r/min-200 r/min, and the grinding time is 0.5-1.5 h. The magnetic steel balls, the materials to be ground and water are sequentially arranged in the mixing tank in sequence, and the materials to be ground entering the mixing tank are sieved by a sieve with the fineness of 1000 meshes.

The specific operation process of the invention is as follows: firstly, adjusting the magnetic field intensity to 0.8T-1.2T by adjusting the distance between magnetic fields; then sieving the material to be ground entering the stirring barrel with a fineness of 1000 meshes; then according to the material to be ground: magnetic steel ball: the water content is 2: 2: 1, sequentially adding a magnetic steel ball, materials and water into a stirring barrel, and starting a rotary motor to operate; then after grinding for 0.5-1.5h, taking out the materials and the magnetic steel balls, separating the magnetic steel balls and the materials by utilizing a sieve with the aperture of 2mm, and watering and flushing the magnetic steel balls in the separation process; and finally, carrying out solid-liquid separation by using a vacuum filtration device, then drying and weighing the wet material, and finally measuring the viscosity and granularity of the material.

The invention carries out 3 groups of sample tests, and the test results are as follows:

test 1: based on the height of a stirring barrel, the diameter of a grinding barrel body, the thread major diameter, the thread minor diameter, the thread pitch and the lead of a stirring paddle are sequentially 20 cm, 10 cm, 6cm, 1cm and 6cm, a steel ball is a common steel ball, a magnetic field is not applied, the stirring speed is 150r/min, the material to be ground is zinc dipping slag, the weight is 2 kg, the material in the stirring barrel is poured into a tray after being ground for 30min, a small amount of material is taken, the viscosity is measured to be 60 mpa.S, and the measured particle size is 0.5 mu m.

Test 2: based on the height of a stirring barrel, the diameter of a grinding barrel body, the thread large diameter, the thread small diameter, the thread pitch and the lead of a stirring paddle are sequentially 20 cm, 10 cm, 6cm, 1cm and 6cm, a steel ball is a magnetic steel ball, the magnetic field intensity formed by an external magnetic field and the magnetic steel ball is 0.2T, the stirring speed is 150r/min, a grinding material is zinc dipping slag with the weight of 2 kg, the material in the stirring barrel is poured into a disc after being ground for 30min, a small amount of material is taken, the viscosity is measured to be 53.5 mpa.S, and the measured particle size is 0.42 mu m.

Test 3: based on the height of the stirring barrel, the diameter of the grinding barrel body, the large diameter of the screw thread of the stirring paddle, the small diameter of the screw thread, the screw pitch and the lead of the stirring paddle are respectively 20 cm, 10 cm, 6cm, 1cm and 6 cm. The steel ball is a magnetic steel ball, the magnetic field intensity formed by an external magnetic field and the magnetic steel ball is 1T, the stirring speed is 150r/min, the grinding material is zinc dipping slag, the weight is 2 kg, the material in the stirring barrel is poured into a disc after grinding for 30min, a small amount of material is taken, the viscosity is 34.7mpa & S, and the measured particle size is 0.25 mu m.

The above are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the concept of the present invention within the scope of the present invention disclosed by the present invention, and all the persons skilled in the art belong to the scope of the present invention.