WO2013007076A1 - Ore grinding medium - Google Patents

Ore grinding medium Download PDF

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Publication number
WO2013007076A1
WO2013007076A1 PCT/CN2011/082849 CN2011082849W WO2013007076A1 WO 2013007076 A1 WO2013007076 A1 WO 2013007076A1 CN 2011082849 W CN2011082849 W CN 2011082849W WO 2013007076 A1 WO2013007076 A1 WO 2013007076A1
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Prior art keywords
grinding
prism
frustum
grinding medium
medium
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Application number
PCT/CN2011/082849
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French (fr)
Chinese (zh)
Inventor
谢兆宗
Original Assignee
Xie Zhaozong
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Publication date
Application filed by Xie Zhaozong filed Critical Xie Zhaozong
Publication of WO2013007076A1 publication Critical patent/WO2013007076A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/20—Disintegrating members

Definitions

  • the present invention relates to a grinding medium, and more particularly to a grinding medium for use in a grinding machine. Background technique
  • the grinding medium (or grinding body) used in the current grinding machine is generally spherical, cylindrical, round-shaped, etc.
  • the ore is in point-to-point contact with the ore in the grinding machine. Grinding is not conducive to fine grinding, but it often leads to excessive coarsening and metal loss, which makes metal materials consume large and reduces grinding efficiency.
  • the grinding size is coarse, suitable for rough grinding and medium grinding, but not suitable for fine grinding. The edges of each cylinder and truncated cone are cut on the mill liner and cause the grinding media to slash each other, thereby accumulating the consumption of grinding media and the wear of the mill liner.
  • the invention patent ZL200620120216.2 discloses a grinding medium comprising a cylindrical portion located at a middle portion, a circular arc portion extending from the cylindrical portion toward both ends, and an end surface portion at both ends, the cylindrical portion being cylindrical
  • the diameter is D
  • the end surface is a plane and is circular
  • the circular diameter is d
  • the circular arc portion forms a circular arc transition from the cylindrical portion to the end surface portion.
  • the above grinding medium solves the problems of spherical, cylindrical and truncated grinding media to a certain extent.
  • the arc transitions are in contact with each other, they are point contacts.
  • the cylindrical surfaces are in contact, they are in line contact, and only when the two end faces are in contact, they are in surface contact. Therefore, the grinding medium of the above invention patent is mainly point contact and line contact during the grinding process, and the grinding efficiency needs to be further improved.
  • the method of using more and less grinding has been adopted.
  • the grinding grain size of more than 50 mm is changed to the current particle size of 20 mm or less, and the grinding medium should also change its grinding principle, which is changed from the ⁇ to the grinding of the ordinary ball to the current grinding to ⁇ . in principle.
  • the present invention provides a grinding medium, comprising: a multi-faceted prism body in the middle section; a frustum extending from the bottom surface of the multi-faceted prism body to the both ends, the multi-faceted The number of sides of the prism is equal to or greater than 5.
  • the prism is a regular prism, and preferably, the ratio of the length h of the prism to the diameter D of the circumscribed circle of the bottom surface is in the range of 0.3 to 5.
  • the prism is a beveled prism.
  • the sides of the prism are 6-12.
  • the side surface of the frustum is a circular arc surface.
  • the side of the frustum is a flat surface.
  • the contact mode is mainly surface contact and line contact during the grinding process of the grinder, wherein the surface contact
  • the proportion is even larger, and it is particularly suitable for the current method of selecting more mining and less grinding. Therefore, the grinding medium of the present invention can reduce the wear of the grinding media and the mill liner, and can significantly improve the grinding efficiency.
  • Fig. 1 is a plan view showing a grinding medium in which a middle portion is a square octagonal prism and a side surface of a frustum is a circular arc surface according to the present invention.
  • Fig. 2 is a front elevational view of the grinding medium in the case where the middle section is a regular octagonal prism and the side of the frustum is a circular arc surface according to the present invention.
  • Fig. 3 is a plan view showing a grinding medium in which the middle portion is a regular seven prism and the side of the frustum is a circular arc surface according to the present invention.
  • Fig. 4 is a plan view showing a grinding medium in which the middle portion is a regular seven prism and the side of the frustum is a circular arc surface according to the present invention.
  • Fig. 5 is a top plan view of a grinding medium in which the middle section is a square octagonal prism and the side of the frustum is flat according to the present invention.
  • Fig. 6 is a front elevational view of the grinding medium in which the middle section is a square octagonal prism and the side of the frustum is flat according to the present invention.
  • Figure 7 is a plan view of a grinding medium in which the middle section is a regular seven prism and the side of the frustum is flat according to the present invention.
  • Figure 8 is a plan view of a grinding medium in which the middle section is a regular seven prism and the side of the frustum is flat according to the present invention.
  • the grinding medium 1 comprises a positive octagonal cylinder 2 in the middle section and a frustum 3 extending from the bottom surface of the multi-faceted prism body, wherein the side surface of the frustum is a circular arc surface, and the end faces of the frustum are flat.
  • the length of the regular octagonal prism is h
  • the diameter of the circumscribed circle on the bottom surface is D.
  • the diameter D is slightly larger than the length of the regular octagonal prism.
  • the length h of the regular octagonal prism and the diameter D of the circumscribed circle of the bottom surface thereof Ratio h: D is in the range of 0. 3-5.
  • the contact mode is basically surface contact and line contact, wherein the surface contact is The ratio is larger. This increases the grinding efficiency and reduces the wear of the grinding media and the mill liner.
  • 3 and 4 are a plan view and a front view of another embodiment of the present invention, wherein the prism of the middle section of the grinding medium 1 is a regular seven prism, and the side of the frustum is an arc Face.
  • the grinding medium 1 comprises a positive seven-prism cylinder 2 in the middle section and a frustum 3 extending from the bottom surface of the multi-faceted prism body, wherein the side surface of the frustum is a circular arc surface, and the end faces of the frustum are flat. .
  • the grinding medium 1 includes a positive octagonal cylinder 2 in the middle section and a frustum 3 extending from the bottom surface of the multi-faceted prism body, wherein the sides of the frustum are flat, and the end faces of the frustum are flat.
  • the grinding medium 1 comprises a regular seven-prism body 2 in the middle section and a frustum 3 extending from the bottom surface of the multi-faceted prism body, wherein the sides of the frustum are flat, and the end faces of the frustum are flat.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

An ore grinding medium (1) comprising a polyhedral prism (2) located in a central section, and frustra (3) extending from the base of the polyhedral prism (2) towards the two ends, the number of sides of the polyhedral prism (2) being equal to or greater than 5. The orc grinding medium (1) can both reduce wear of the orc grinding medium (1) and the lining plate of a grinding machine and distinctly improve orc grinding efficiency.

Description

磨矿介质  Grinding medium
技术领域 本发明涉及一种磨矿介质， 尤其涉及一种在磨矿机中使用的 磨矿介质。 背景技术 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grinding medium, and more particularly to a grinding medium for use in a grinding machine. Background technique
在选矿业中， 磨矿介质的形状、 尺寸、 材质及添加质量直接会影 响磨矿效率、 金属回收率及金属材料的消耗。 因此， 关于磨矿介质的 形状、 尺寸、 材质的研究一直是本领域的研究重点。  In the mining industry, the shape, size, material and quality of the grinding media directly affect the grinding efficiency, metal recovery and metal material consumption. Therefore, research on the shape, size and material of grinding media has been the focus of research in this field.
目前的磨矿机中使用的磨矿介质 （或称研磨体） 一般为圆球 形、 圆柱形、 圆台形等， 对于圆球形介质而言， 在磨矿机中与矿 石是以点与点接触方式进行研磨， 不利于进行细磨， 但往往造成 过粗而导致金属流失， 使得金属材料消耗量大， 降低磨矿效率。 对于圆柱形及圆台形磨矿介质， 虽然它们包含了点、 线、 面的接 触方式， 但磨矿粒度粗， 适于粗磨、 中磨， 但不适于细磨。 且每 个圆柱、 圆台的边缘会砍在磨机衬板上以及导致磨矿介质之间相 互砍杀， 从而加剧磨矿介质的消耗及磨机衬板的磨损。  The grinding medium (or grinding body) used in the current grinding machine is generally spherical, cylindrical, round-shaped, etc. For the spherical medium, the ore is in point-to-point contact with the ore in the grinding machine. Grinding is not conducive to fine grinding, but it often leads to excessive coarsening and metal loss, which makes metal materials consume large and reduces grinding efficiency. For cylindrical and truncated grinding media, although they contain point, line, and surface contact, the grinding size is coarse, suitable for rough grinding and medium grinding, but not suitable for fine grinding. The edges of each cylinder and truncated cone are cut on the mill liner and cause the grinding media to slash each other, thereby accumulating the consumption of grinding media and the wear of the mill liner.
为解决上述问题， 发明专利 ZL200620120216.2公开了一种磨 矿介质， 其包括位于中段的圆柱部、 自圆柱部向两端延伸的圆弧 部及位于两端的端面部， 该圆柱部呈圆柱体形， 直径为 D , 端面 部为一平面并呈圆形， 圆形直径为 d， 且 D>d， 圆弧部是从圆柱部 向端面部形成圆弧形过渡。  In order to solve the above problem, the invention patent ZL200620120216.2 discloses a grinding medium comprising a cylindrical portion located at a middle portion, a circular arc portion extending from the cylindrical portion toward both ends, and an end surface portion at both ends, the cylindrical portion being cylindrical The diameter is D, the end surface is a plane and is circular, the circular diameter is d, and D>d, and the circular arc portion forms a circular arc transition from the cylindrical portion to the end surface portion.
上述磨矿介质在一定程度上解决了圆球形、 圆柱形和圆台形 磨矿介质所存在的问题。 但是当其圆弧过渡处相接触时为点接触， 当圆柱面相接触时为线接触， 只有当两端面相接触时为面接触。 因此， 上述发明专利的磨矿介质在磨矿过程中以点接触和线接触 为主， 其磨矿效率有待进一步提高。 而且， 随着选矿业的技术改革， 采用多破少磨的方法， 由过 去的 50毫米以上的入磨粒度改变为现在的 20毫米以下的粒度， 磨矿介质也应该随之改变其磨矿原理， 由普通圆球的由砸到磨改 变为现在的由磨到砸的原则。 发明内容 The above grinding medium solves the problems of spherical, cylindrical and truncated grinding media to a certain extent. However, when the arc transitions are in contact with each other, they are point contacts. When the cylindrical surfaces are in contact, they are in line contact, and only when the two end faces are in contact, they are in surface contact. Therefore, the grinding medium of the above invention patent is mainly point contact and line contact during the grinding process, and the grinding efficiency needs to be further improved. Moreover, with the technical reform of mining industry, the method of using more and less grinding has been adopted. The grinding grain size of more than 50 mm is changed to the current particle size of 20 mm or less, and the grinding medium should also change its grinding principle, which is changed from the 砸 to the grinding of the ordinary ball to the current grinding to 砸. in principle. Summary of the invention
为了进一步提高磨矿介质的磨矿效率， 本发明提供了一种磨 矿介质， 其特征在于： 包括位于中段的多面棱柱体、 自多面棱柱 体的底面向两端延伸的锥台， 所述多面棱柱体的侧面的个数等于 或大于 5。  In order to further improve the grinding efficiency of the grinding medium, the present invention provides a grinding medium, comprising: a multi-faceted prism body in the middle section; a frustum extending from the bottom surface of the multi-faceted prism body to the both ends, the multi-faceted The number of sides of the prism is equal to or greater than 5.
优选地， 所述棱柱体是正棱柱体， 并且优选地， 所述棱柱体 的长度 h与其底面外接圆的直径 D之比在 0.3~5的范围内。  Preferably, the prism is a regular prism, and preferably, the ratio of the length h of the prism to the diameter D of the circumscribed circle of the bottom surface is in the range of 0.3 to 5.
可选地， 所述棱柱体是斜棱柱体。  Optionally, the prism is a beveled prism.
优选地， 所述棱柱体的侧面是 6— 12个。  Preferably, the sides of the prism are 6-12.
优选地， 所述锥台的侧面是圆弧面。  Preferably, the side surface of the frustum is a circular arc surface.
可选地， 所述锥台的侧面是平面。  Optionally, the side of the frustum is a flat surface.
可选地， 所述棱柱体的各个侧面之间圆滑过渡。 由于本发明是由位于中段的棱柱体和自多面棱柱体的底面向 两端延伸的锥台构成， 因此， 在磨矿机磨矿过程中， 接触方式主 要是面接触和线接触， 其中面接触的比例更大， 其特别适合目前 选矿业多破少磨的方法。 因此本发明的磨矿介质既能减小磨矿介 质和磨机衬板的磨损， 又能明显地提高磨矿效率。 附图说明  Optionally, a smooth transition between the sides of the prism is achieved. Since the present invention is composed of a prism body located in the middle section and a frustum extending from the bottom surface of the multi-faceted prism body, the contact mode is mainly surface contact and line contact during the grinding process of the grinder, wherein the surface contact The proportion is even larger, and it is particularly suitable for the current method of selecting more mining and less grinding. Therefore, the grinding medium of the present invention can reduce the wear of the grinding media and the mill liner, and can significantly improve the grinding efficiency. DRAWINGS
图 1 是根据本发明的中段为正八棱柱、 锥台侧面为圆弧面时 的磨矿介质的俯视图。  BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a plan view showing a grinding medium in which a middle portion is a square octagonal prism and a side surface of a frustum is a circular arc surface according to the present invention.
图 2 是根据本发明的中段为正八棱柱、 锥台侧面为圆弧面时 的磨矿介质的主视图。  Fig. 2 is a front elevational view of the grinding medium in the case where the middle section is a regular octagonal prism and the side of the frustum is a circular arc surface according to the present invention.
图 3 是根据本发明的中段为正七棱柱、 锥台侧面为圆弧面时 的磨矿介质的俯视图。 图 4 是根据本发明的中段为正七棱柱、 锥台侧面为圆弧面时 的磨矿介质的俯视图。 Fig. 3 is a plan view showing a grinding medium in which the middle portion is a regular seven prism and the side of the frustum is a circular arc surface according to the present invention. Fig. 4 is a plan view showing a grinding medium in which the middle portion is a regular seven prism and the side of the frustum is a circular arc surface according to the present invention.
图 5 是根据本发明的中段为正八棱柱、 锥台侧面为平面时的 磨矿介质的俯视图。  Fig. 5 is a top plan view of a grinding medium in which the middle section is a square octagonal prism and the side of the frustum is flat according to the present invention.
图 6 是根据本发明的中段为正八棱柱、 锥台侧面为平面时的 磨矿介质的主视图。  Fig. 6 is a front elevational view of the grinding medium in which the middle section is a square octagonal prism and the side of the frustum is flat according to the present invention.
图 7 是根据本发明的中段为正七棱柱、 锥台侧面为平面时的 磨矿介质的俯视图。 图 8 是根据本发明的中段为正七棱柱、 锥台侧面为平面时的 磨矿介质的俯视图。 具体实施方式  Figure 7 is a plan view of a grinding medium in which the middle section is a regular seven prism and the side of the frustum is flat according to the present invention. Figure 8 is a plan view of a grinding medium in which the middle section is a regular seven prism and the side of the frustum is flat according to the present invention. detailed description
下面将参考附图描述本发明的实施例。 附图分别以正八棱柱 和正七棱柱为例进行描述， 说明本发明的中段棱柱体的侧面的个 数既可以是奇数， 也可以是偶数。  Embodiments of the present invention will be described below with reference to the drawings. The drawings are respectively described by taking an octagonal prism and a regular seven prism as an example, and the number of the sides of the middle prism of the present invention may be either an odd number or an even number.
图 1和 2示出的是根据本发明的棱柱体为正八棱柱、 锥台侧 面为圆弧面时的磨矿介质 1 的俯视图和主视图。 如图所示， 磨矿 介质 1包括位于中段的正八棱柱体 2和自多面棱柱体的底面向两 端延伸的锥台 3， 其中锥台的侧面为圆弧面， 锥台两端的端面为平 面。  1 and 2 are a plan view and a front view of a grinding medium 1 in which a prism body is a regular octagonal prism and a frustum side surface is a circular arc surface according to the present invention. As shown in the figure, the grinding medium 1 comprises a positive octagonal cylinder 2 in the middle section and a frustum 3 extending from the bottom surface of the multi-faceted prism body, wherein the side surface of the frustum is a circular arc surface, and the end faces of the frustum are flat. .
其中， 正八棱柱的长度为 h， 其底面外接圆的直径为 D， 本实 施例中直径 D略大于正八棱柱的长度^ 根据实践， 优选地， 正八 棱柱的长度 h与其底面外接圆的直径 D之比 h : D在 0. 3-5的范围 内。  Wherein, the length of the regular octagonal prism is h, and the diameter of the circumscribed circle on the bottom surface is D. In this embodiment, the diameter D is slightly larger than the length of the regular octagonal prism. According to practice, preferably, the length h of the regular octagonal prism and the diameter D of the circumscribed circle of the bottom surface thereof Ratio h: D is in the range of 0. 3-5.
由于磨矿介质的中段是由八个平面构成的八棱柱， 而两端是 由圆弧面形成的锥台， 因此在磨矿过程中， 接触方式基本为面接 触和线接触， 其中面接触的比例更大。 由此提高了磨矿效率， 同 时减小了磨矿介质和磨机衬板的磨损。  Since the middle section of the grinding medium is an octagonal prism composed of eight planes, and both ends are frustums formed by arcuate faces, in the grinding process, the contact mode is basically surface contact and line contact, wherein the surface contact is The ratio is larger. This increases the grinding efficiency and reduces the wear of the grinding media and the mill liner.
图 3和 4示出的是本发明的另一实施例的俯视图和主视图， 其中， 磨矿介质 1 的中段的棱柱体为正七棱柱， 锥台侧面为圆弧 面。 如图所示， 磨矿介质 1包括位于中段的正七棱柱体 2和自多 面棱柱体的底面向两端延伸的锥台 3， 其中锥台的侧面为圆弧面， 锥台两端的端面为平面。 3 and 4 are a plan view and a front view of another embodiment of the present invention, wherein the prism of the middle section of the grinding medium 1 is a regular seven prism, and the side of the frustum is an arc Face. As shown in the figure, the grinding medium 1 comprises a positive seven-prism cylinder 2 in the middle section and a frustum 3 extending from the bottom surface of the multi-faceted prism body, wherein the side surface of the frustum is a circular arc surface, and the end faces of the frustum are flat. .
图 5和 6示出的是本发明的另一实施例的俯视图和主视图， 其中， 磨矿介质 1的中段的棱柱体为正八棱柱， 锥台侧面为平面。 如图所示， 磨矿介质 1包括位于中段的正八棱柱体 2和自多面棱 柱体的底面向两端延伸的锥台 3， 其中锥台的侧面为平面， 锥台两 端的端面为平面。  5 and 6 show a plan view and a front view of another embodiment of the present invention, in which the prism of the middle section of the grinding medium 1 is a regular octagonal prism, and the sides of the frustum are flat. As shown, the grinding medium 1 includes a positive octagonal cylinder 2 in the middle section and a frustum 3 extending from the bottom surface of the multi-faceted prism body, wherein the sides of the frustum are flat, and the end faces of the frustum are flat.
图 7和 8示出的是本发明的另一实施例的俯视图和主视图， 其中， 磨矿介质 1 的中段的棱柱体为正七棱柱， 锥台侧面为平。 如图所示， 磨矿介质 1包括位于中段的正七棱柱体 2和自多面棱 柱体的底面向两端延伸的锥台 3， 其中锥台的侧面为平面， 锥台两 端的端面为平面。  7 and 8 show a plan view and a front view of another embodiment of the present invention, in which the prism of the middle section of the grinding medium 1 is a regular seven prism and the side of the frustum is flat. As shown in the figure, the grinding medium 1 comprises a regular seven-prism body 2 in the middle section and a frustum 3 extending from the bottom surface of the multi-faceted prism body, wherein the sides of the frustum are flat, and the end faces of the frustum are flat.
根据上述实施例， 本领域技术人员可以理解不论棱柱体的侧 面数是奇数还是偶数， 均落在本发明的保护范围内。 尽管这里详细描述了本发明的特定实施例， 但它们仅仅是为 了解释的目的而给出的， 而不应认为它们对本发明的范围构成限 制。 在不脱离本发明的精神和范围的情况下， 可以对本发明做出 各种替换、 变更和改造。  According to the above embodiment, those skilled in the art can understand that regardless of whether the number of sides of the prism is odd or even, it falls within the protection scope of the present invention. Although the specific embodiments of the invention have been described herein in detail, they are not intended to Various alternatives, modifications, and adaptations of the invention can be made without departing from the spirit and scope of the invention.

Claims

权 利 要 求 Rights request
1 . 一种磨矿介质， 其特征在于：  What is claimed is: 1. A grinding medium characterized by:
包括位于中段的多面棱柱体、 自多面棱柱体的底面向两端延 伸的锥台， 所述多面棱柱体的侧面的个数等于或大于 5。  The multi-faceted prism body in the middle section, the frustum extending from the bottom surface of the multi-faceted prism body, the number of sides of the multi-faceted prism body is equal to or greater than 5.
2. 根据权利要求 1所述的磨矿介质， 其特征在于： 所述棱柱 体是正棱柱体。  2. The grinding media of claim 1 wherein: the prisms are regular prisms.
3. 根据权利要求 1或 2所述的磨矿介质， 其特征在于： 所述 锥台的侧面为圆弧面。 The grinding medium according to claim 1 or 2, wherein the side surface of the frustum is a circular arc surface.
4. 根据权利要求 1或 2所述的磨矿介质， 其特征在于： 所述 锥台的侧面是平面。 The grinding medium according to claim 1 or 2, characterized in that the side surface of the frustum is a flat surface.
5. 根据权利要求 1或 2所述的磨矿介质， 其特征在于： 所述 锥台两端的端面为平面。 The grinding medium according to claim 1 or 2, wherein the end faces of the both ends of the frustum are flat.
6. 根据权利要求 1或 2所述的磨矿介质， 其特征在于： 棱柱 体的各个侧面之间圆滑过渡。 6. A grinding medium according to claim 1 or 2, characterized in that the sides of the prism have a smooth transition between the sides.
PCT/CN2011/082849 2011-07-12 2011-11-24 Ore grinding medium WO2013007076A1 (en)

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CN102872948A (en) * 2011-07-12 2013-01-16 谢兆宗 Ore grinding medium
CN103240151A (en) * 2013-05-20 2013-08-14 潞城市卓越水泥有限公司 Grinding body
CN104549663B (en) * 2013-10-10 2018-07-31 谢兆宗 Milling medium and device and method for producing milling medium
CN105268518B (en) * 2014-05-29 2020-04-14 河北首鼎金属材料股份有限公司 Multifunctional multi-edge grinding ball
CN104084270B (en) * 2014-07-09 2016-04-06 宁国东方碾磨材料股份有限公司 A kind of abrasion-proof steel ball
CN104772196B (en) * 2015-03-12 2018-11-09 河北首鼎金属制品有限公司 It is a kind of to forge more rib abrading-balls and its manufacturing method
CN104888904A (en) * 2015-06-18 2015-09-09 江西理工大学 Grinding medium adopting shape of dual-spherical hexagonal prism
CN107744863A (en) * 2017-12-13 2018-03-02 贵州瓮安经济开发区管理委员会 New comminution medium
CN108970731A (en) * 2018-05-16 2018-12-11 铜陵有色金属集团股份有限公司 Polyhedron milling medium and its forging mold and forging method for semi-autogenous mill

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