CN112536110A - A ball-milling jar for preparing zirconia powder - Google Patents
A ball-milling jar for preparing zirconia powder Download PDFInfo
- Publication number
- CN112536110A CN112536110A CN201910892641.5A CN201910892641A CN112536110A CN 112536110 A CN112536110 A CN 112536110A CN 201910892641 A CN201910892641 A CN 201910892641A CN 112536110 A CN112536110 A CN 112536110A
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- China
- Prior art keywords
- wall
- tank body
- transition layer
- zirconia
- metal tank
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- 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
- B02C17/22—Lining for containers
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- 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
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a ball milling tank for preparing zirconium oxide powder, which comprises: the inner wall of the metal tank body comprises an inner bottom wall and an inner side wall, and an accommodating space for grinding zirconium oxide is defined by the inner bottom wall and the inner side wall; the zirconium oxide coating is laid on the inner wall of the metal tank body and covers the whole inner bottom wall and at least three quarters of the inner side wall; and the bonding transition layer is laid between the inner wall of the metal tank body and the zirconia coating, one side of the bonding transition layer is bonded to the inner wall of the metal tank body, and the other side of the bonding transition layer is bonded to the outer wall of the zirconia coating. According to the ball milling tank, the zirconium oxide coating is laid on the inner wall of the metal tank body, so that the hardness of the metal tank body can be maintained, the ball milling efficiency can be improved, and the pollution to ball milling materials caused by the abrasion of the metal tank body can be prevented; and a bonding transition layer is sprayed between the metal tank body and the zirconia coating, so that the bonding force of the zirconia coating is improved, and the falling off in the process is avoided.
Description
Technical Field
The invention relates to the technical field of zirconia preparation, in particular to a ball milling tank for preparing zirconia powder.
Background
This section provides background information related to the present disclosure only and is not necessarily prior art.
In order to prevent the pollution to materials caused by the abrasion of a metal tank body in the ball milling process, the conventional ball milling tank for preparing zirconia powder mainly comprises a tank body and a ceramic tank body which are made of organic materials, but the organic tank body is soft, can absorb the impact energy of grinding balls and convert the energy into heat, so that the ball milling efficiency is greatly reduced; the ceramic tank body is expensive and fragile, and the ceramic tank still has abrasion, so that material scraps can still be accumulated after frequent use, thereby causing product pollution.
Disclosure of Invention
It is an object of the present invention to at least partially solve at least one of the technical problems described above. The purpose is realized by the following technical scheme:
the first aspect of the present invention provides a ball mill pot for preparing zirconia powder, comprising:
the inner wall of the metal tank body comprises an inner bottom wall and an inner side wall, and an accommodating space for grinding zirconium oxide is defined by the inner bottom wall and the inner side wall;
the zirconium oxide coating is laid on the inner wall of the metal tank body, and the zirconium oxide coating covers the whole inner bottom wall and at least three-quarters of the inner side wall;
the bonding transition layer is laid between the inner wall of the metal tank body and the zirconia coating, one side of the bonding transition layer is bonded to the inner wall of the metal tank body, and the other side of the bonding transition layer is bonded to the outer wall of the zirconia coating.
Further, the zirconia coating covers all of the inner bottom wall and all of the inner side wall.
Further, the thickness of the zirconia coating is larger than that of the bonding transition layer.
Further, the bonding transition layer is a nickel-chromium-aluminum-yttrium transition layer.
Further, the metal can is a stainless steel can.
Further, the zirconia coating is a yttria-stabilized zirconia coating of 3% mol to 8% mol.
The ball milling tank for preparing the zirconia powder, provided by the invention, is characterized in that a zirconia coating is laid on the inner wall of a metal tank body, the thermal expansion coefficient of the zirconia coating is basically consistent with that of the metal tank body, and as the hardness of a metal material is higher, the energy loss in the ball milling process is smaller, the ball milling efficiency can be obviously improved; meanwhile, the zirconia coating is arranged, so that the wear resistance of the ball milling tank can be improved, and the components of the zirconia coating are consistent with the components of the zirconia to be ball milled in the ball milling tank, so that the components of the zirconia coating worn down in the ball milling process can not pollute the components of the materials when a small amount of wear cannot be avoided; and moreover, a bonding transition layer is sprayed between the metal tank body and the zirconia coating, so that the difference of the thermal expansion coefficients of the metal tank body and the zirconia coating can be further reduced, the binding force of the zirconia coating is improved, the impact resistance is improved, and the falling off in the process is avoided.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:
fig. 1 is a longitudinal sectional view of one embodiment of a ball milling jar according to the present invention.
Description of reference numerals:
1-metal can body 2-adhesive transition layer 3-zirconia coating
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Referring to fig. 1, fig. 1 is a longitudinal sectional view of a ball milling jar according to an embodiment of the present invention.
In a specific embodiment, the ball milling tank provided by the invention is used for preparing zirconia powder, and comprises a metal tank body 1, a zirconia coating 3 and a bonding transition layer 2, wherein the metal tank body 1 is a container with an open top end, the inner wall of the metal tank body 1 comprises an inner bottom wall and an inner side wall, an accommodating space for grinding zirconia is defined by the inner bottom wall and the inner side wall, and in a processing process, a zirconia material to be processed is placed in the accommodating space of the metal tank body 1; the zirconia coating 3 is laid on the inner wall of the metal tank body 1, and a zirconia layer can be sprayed on the inner wall of the metal ball-milling tank by adopting a thermal spraying or plasma spraying method in the actual processing process. The zirconia coating 3 covers all of the inner bottom wall and at least three quarters of the inner side wall, and obviously the zirconia coating 3 on the inner side wall is located near three quarters of the inner bottom wall portion, since the zirconia material normally contacts the inner bottom wall of the metal can body 1 and the lower half of the inner side wall during grinding, and therefore, in order to save material, the coating can be sprayed only on the lower three quarters of the inner side wall. One side of the bonding transition layer 2 is bonded to the inner wall of the metal tank body 1, and the other side of the bonding transition layer is bonded to the outer wall of the zirconia coating 3. In the actual processing process, a thermal spraying or plasma spraying method can be adopted to firstly spray a bonding transition layer on the inner wall of the metal ball milling tank and then spray a zirconia layer. The bonding transition layer is sprayed between the metal tank body 1 and the zirconia coating 3, so that the difference of the thermal expansion coefficients of the metal tank body 1 and the zirconia coating 3 can be further reduced, the binding force of the zirconia coating 3 is improved, the impact resistance is improved, and the shedding in the process is avoided.
Further, in order to increase the protection area and prevent the upper metal can body 1 from being abraded and falling off, the zirconia coating 3 covers all of the inner bottom wall and all of the inner side wall.
In the working process, as the zirconia coating 3 is a main wear layer, in order to prolong the service life of the ball milling tank, the thickness of the zirconia coating 3 can be larger than that of the bonding transition layer 2.
Specifically, the bonding transition layer 2 is a nickel-chromium-aluminum-yttrium transition layer (a NiAlY alloy bonding transition layer), and the use of a nickel-chromium-aluminum-yttrium alloy as the bonding transition layer 2 can not only improve the bonding reliability of the zirconia coating 3, but also further reduce the difference in thermal expansion coefficient between the zirconia coating 3 and the metal tank body 1, and improve the bonding force of the zirconia coating.
Since the zirconia coating 3 is mainly intended to improve wear resistance so that the ball mill jar can operate at normal temperature, the composition of the zirconia coating 3 may be 3% mol to 8% mol of yttria-stabilized zirconia, specifically, 3% mol of yttria-stabilized zirconia coating, 5% mol of yttria-stabilized zirconia coating, or 8% mol of yttria-stabilized zirconia coating.
Specifically, the metal can body 1 may be a stainless steel can body.
In the above specific embodiment, the ball milling pot for preparing zirconia powder provided by the present invention sprays a zirconia coating 3 on the inner wall of the metal pot body 1, the thermal expansion coefficient of the zirconia coating 3 is substantially consistent with that of the metal pot body 1, the hardness of the metal material is high, the energy loss in the ball milling process is small, and the ball milling efficiency can be significantly improved; meanwhile, the zirconia coating 3 is arranged, so that the wear resistance of the ball milling tank can be improved, and the components of the zirconia coating 3 are consistent with the components of the zirconia to be ball milled in the ball milling tank, so that the components of the zirconia coating 3 worn down in the ball milling process can not pollute the components of the materials when a small amount of wear cannot be avoided; and, the spraying has the transition layer 2 of cohering between metal can 1 and zirconia coating 3, further reduce the difference of coefficient of thermal expansion of the two, thus improve the cohesion of the zirconia coating 3, avoid taking place to drop off in the course of the process, improve the impact resistance.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A ball-milling jar for preparing zirconia powder, comprising:
the inner wall of the metal tank body comprises an inner bottom wall and an inner side wall, and an accommodating space for grinding zirconium oxide is defined by the inner bottom wall and the inner side wall;
the zirconium oxide coating is laid on the inner wall of the metal tank body, and the zirconium oxide coating covers the whole inner bottom wall and at least three-quarters of the inner side wall;
the bonding transition layer is laid between the inner wall of the metal tank body and the zirconia coating, one side of the bonding transition layer is bonded to the inner wall of the metal tank body, and the other side of the bonding transition layer is bonded to the outer wall of the zirconia coating.
2. The ball mill pot of claim 1, wherein the zirconia coating covers all of the inner bottom wall and all of the inner side wall.
3. The ball mill pot of claim 1, wherein the zirconia coating has a thickness greater than a thickness of the bonding transition layer.
4. The ball mill pot of claim 1, wherein the bonding transition layer is a nickel chromium aluminum yttrium transition layer.
5. The ball milling pot of claim 1, wherein the metal pot is a stainless steel pot.
6. The mill pot of any of claims 1 to 5, characterized in that the zirconia coating is a yttria-stabilized zirconia coating of 3% mol to 8% mol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910892641.5A CN112536110A (en) | 2019-09-20 | 2019-09-20 | A ball-milling jar for preparing zirconia powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910892641.5A CN112536110A (en) | 2019-09-20 | 2019-09-20 | A ball-milling jar for preparing zirconia powder |
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| CN112536110A true CN112536110A (en) | 2021-03-23 |
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| CN201910892641.5A Pending CN112536110A (en) | 2019-09-20 | 2019-09-20 | A ball-milling jar for preparing zirconia powder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073319A (en) * | 2021-04-07 | 2021-07-06 | 重庆科技学院 | Ball milling tank inner wall hardening method and ball milling tank |
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2019
- 2019-09-20 CN CN201910892641.5A patent/CN112536110A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073319A (en) * | 2021-04-07 | 2021-07-06 | 重庆科技学院 | Ball milling tank inner wall hardening method and ball milling tank |
| CN113073319B (en) * | 2021-04-07 | 2022-09-23 | 重庆科技学院 | Ball milling tank inner wall hardening method and ball milling tank |
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Application publication date: 20210323 |