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CN112723858A - Formula and production process of low-cost alumina ceramic ball - Google Patents

Formula and production process of low-cost alumina ceramic ball Download PDF

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Publication number
CN112723858A
CN112723858A CN202011585284.7A CN202011585284A CN112723858A CN 112723858 A CN112723858 A CN 112723858A CN 202011585284 A CN202011585284 A CN 202011585284A CN 112723858 A CN112723858 A CN 112723858A
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刘冰
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Jiaxing Nami New Material Co ltd
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Jiaxing Nami New Material Co ltd
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Abstract

The invention discloses a formula of low-cost alumina ceramic balls, which is measured by raw materials by mass, wherein 40% or more of bauxite is more than or equal to 20%, 30% or more of kaolin is more than or equal to 10%, 10% or more of clay, 10% or more of quartz powder, 25% or more of feldspar powder is more than or equal to 15%, 5% or more of talcum powder is more than or equal to 1%, 10% or more of zirconium silicate, and the formula is measured by the following oxides by mass: 50% or more of Al2O3≥30%;55%≥SiO2≥35%;7%≥ZrO2+HfO2(ii) a 10% or more of other components. The bauxite is used as the source of the aluminum oxide, so that the cost of the composite ceramic ball can be obviously reduced, and the density and the hardness of the ceramic ball are ensured.

Description

Formula and production process of low-cost alumina ceramic ball
Technical Field
The invention belongs to the field of grinding media, and particularly relates to a formula of a low-cost alumina ceramic ball and a production process thereof.
Background
With the rapid development of the powder superfine technology, the requirements of industries such as electronics, paper making, ceramics, chemical industry, paint, printing ink, plastics and the like on the fineness of the powder are higher and higher, and even some powder needs to reach the nanometer level. After the superfine powder is used, the performance of the material can be improved. The material is superfinely ground at home and abroad by a physical method, the best and most economical method is wet grinding, and ceramic balls with various diameter specifications are necessarily used as grinding media in the process.
The existing formula used by the low specific gravity alumina composite ceramic ball usually needs to use a large amount of high-purity alumina powder to be compounded with kaolin, clay and the like, and the cost is very high, so that the product price is high.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the alumina composite ceramic ball which ensures the density and the hardness of the composite ceramic ball and reduces the cost.
In order to achieve the purpose, the invention provides the following technical scheme: a formula of low-cost alumina ceramic balls comprises bauxite, kaolin, clay, quartz powder, feldspar powder, talc powder and zirconium silicate.
The further formula comprises the following components in parts by weight:
40% or more of bauxite is more than or equal to 20%;
30 percent of kaolin is more than or equal to 10 percent;
10% of clay;
10% or more of quartz powder;
the content of the feldspar powder is more than or equal to 25 percent and more than or equal to 15 percent;
5% or more than 1% of talcum powder;
10 percent of zirconium silicate.
Further measured in terms of oxide mass:
50%≥Al2O3≥30%;
55%≥SiO2≥35%;
7%≥ZrO2+HfO2
10% or more of other components.
Further other components are oxides.
A production process of low-cost alumina ceramic balls comprises the following steps:
1) preparing raw materials: uniformly mixing all raw materials in the formula, ball-milling by adopting a wet method until the median diameter is less than 1um, and spray-drying to obtain superfine powder;
2) molding: placing the superfine powder into a ball forming mill, adding water, mixing and stirring uniformly, sieving to obtain a ball with the particle size of 0.1-0.5mm, adding the ball into the ball forming mill, and continuously adding water and the superfine powder onto the ball until the ball is enlarged to a ceramic ball green compact with the particle size of 0.2-15 mm;
3) and (3) sintering: heating the ceramic ball green body to 300 ℃ in a kiln at the speed of 60 ℃/hr, then preserving heat for 1hr, heating to over 1100 ℃ at the speed of 120 ℃/hr, preserving heat for 2-4 hours, and naturally cooling to room temperature.
Compared with the prior art, the invention has the beneficial effects that: the invention can reduce the production cost on the premise of ensuring the density and the hardness of the final ceramic ball.
Detailed Description
In the description of the present invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features. Thus, a definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and in the description of the invention, "a number" or "a number" means two or more unless explicitly specified otherwise.
Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of the invention, "plurality" or "a plurality" means two or more unless explicitly specifically defined otherwise.
A formula of low-cost alumina ceramic balls comprises bauxite, kaolin, clay, quartz powder, feldspar powder, talcum powder and zirconium silicate.
The formula of this example contains the following components in parts by mass:
40% or more of bauxite is more than or equal to 20%;
30 percent of kaolin is more than or equal to 10 percent;
10% of clay;
10% or more of quartz powder;
the content of the feldspar powder is more than or equal to 25 percent and more than or equal to 15 percent;
5% or more than 1% of talcum powder;
10 percent of zirconium silicate.
The formulations of this example were measured as follows:
50%≥Al2O3≥30%;
55%≥SiO2≥35%;
7%≥ZrO2+HfO2
10% or more of other components.
The other component preferred in this embodiment is an oxide.
A production process of low-cost alumina ceramic balls comprises the following steps:
1) preparing raw materials: uniformly mixing all raw materials in the formula, ball-milling by adopting a wet method until the median diameter is less than 1um, and spray-drying to obtain superfine powder;
2) molding: placing the superfine powder into a ball forming mill, adding water, mixing and stirring uniformly, sieving to obtain a ball with the particle size of 0.1-0.5mm, adding the ball into the ball forming mill, and continuously adding water and the superfine powder onto the ball until the ball is enlarged to a ceramic ball green compact with the particle size of 0.2-15 mm;
3) and (3) sintering: heating the ceramic ball green body to 300 ℃ in a kiln at the speed of 60 ℃/hr, then preserving heat for 1hr, heating to over 1100 ℃ at the speed of 120 ℃/hr, preserving heat for 2-4 hours, and naturally cooling to room temperature.
The first embodiment is as follows:
the formula of the low-cost alumina ceramic ball comprises the following components:
30 percent of bauxite;
22.5 percent of kaolin;
9.7 percent of clay;
13 percent of quartz powder;
23 percent of feldspar powder;
1.8 percent of talcum powder.
The production process comprises the following steps:
1) preparing raw materials: uniformly mixing all raw materials in the formula, ball-milling by adopting a wet method until the median diameter is less than 1um, and spray-drying to obtain superfine powder;
2) molding: placing the superfine powder into a ball forming mill, adding water, mixing and stirring uniformly, sieving to obtain a ball with the particle size of 0.1-0.5mm, adding the ball into the ball forming mill, and continuously adding water and the superfine powder onto the ball until the ball is enlarged to a ceramic ball green compact with the particle size of 0.2-15 mm;
3) and (3) sintering: heating the ceramic ball green body to 300 ℃ in a kiln at the speed of 60 ℃/hr, then preserving heat for 1hr, heating to 1200 ℃ at the speed of 120 ℃/hr, preserving heat for 4 hours, and naturally cooling to room temperature.
The density of the prepared ceramic ball is more than or equal to 2.65g/cm3, the hardness is more than or equal to 650HV, and the abrasion is less than or equal to 0.60g/hr.kg.2000 r/min.
Example two:
the formula of the low-cost alumina ceramic ball comprises the following components:
30 percent of bauxite;
22.5 percent of kaolin;
4.7 percent of clay;
13 percent of quartz powder;
23 percent of feldspar powder;
1.8 percent of talcum powder;
5 percent of zirconium silicate.
The production process comprises the following steps:
1) preparing raw materials: uniformly mixing all raw materials in the formula, ball-milling by adopting a wet method until the median diameter is less than 1um, and spray-drying to obtain superfine powder;
2) molding: placing the superfine powder into a ball forming mill, adding water, mixing and stirring uniformly, sieving to obtain a ball with the particle size of 0.1-0.5mm, adding the ball into the ball forming mill, and continuously adding water and the superfine powder onto the ball until the ball is enlarged to a ceramic ball green compact with the particle size of 0.2-15 mm;
3) and (3) sintering: heating the ceramic ball green body to 300 ℃ in a kiln at the speed of 60 ℃/hr, then preserving heat for 1hr, heating to 1200 ℃ at the speed of 120 ℃/hr, preserving heat for 4 hours, and naturally cooling to room temperature.
The density of the prepared ceramic ball is more than or equal to 2.65g/cm3, the hardness is more than or equal to 700HV, and the abrasion is less than or equal to 0.50g/hr.kg.2000 r/min.
Example three:
the formula of the low-cost alumina ceramic ball comprises the following components:
35 percent of bauxite;
22.5 percent of kaolin;
4.7 percent of clay;
10 percent of quartz powder;
21 percent of feldspar powder;
1.8 percent of talcum powder;
5 percent of zirconium silicate.
The production process comprises the following steps:
1) preparing raw materials: uniformly mixing all raw materials in the formula, ball-milling by adopting a wet method until the median diameter is less than 1um, and spray-drying to obtain superfine powder;
2) molding: placing the superfine powder into a ball forming mill, adding water, mixing and stirring uniformly, sieving to obtain a ball with the particle size of 0.1-0.5mm, adding the ball into the ball forming mill, and continuously adding water and the superfine powder onto the ball until the ball is enlarged to a ceramic ball green compact with the particle size of 0.2-15 mm;
3) and (3) sintering: heating the ceramic ball green body to 300 ℃ in a kiln at the speed of 60 ℃/hr, then preserving heat for 1hr, heating to 1200 ℃ at the speed of 120 ℃/hr, preserving heat for 4 hours, and naturally cooling to room temperature.
The density of the prepared ceramic ball is more than or equal to 2.7g/cm3, the hardness is more than or equal to 700HV, and the abrasion is less than or equal to 0.45g/hr.kg.2000 r/min.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims (5)

1. The formula of the low-cost alumina ceramic ball is characterized in that: comprises bauxite, kaolin, clay, quartz powder, feldspar powder, talcum powder and zirconium silicate.
2. The formula of the low-cost alumina ceramic ball according to claim 1, wherein the formula comprises the following components in parts by weight:
40% or more of bauxite is more than or equal to 20%;
30 percent of kaolin is more than or equal to 10 percent;
10% of clay;
10% or more of quartz powder;
the content of the feldspar powder is more than or equal to 25 percent and more than or equal to 15 percent;
5% or more than 1% of talcum powder;
10 percent of zirconium silicate.
3. The formulation of low cost alumina ceramic balls according to claim 2, wherein the following are measured in oxide mass:
50%≥Al2O3≥30%;
55%≥SiO2≥35%;
7%≥ZrO2+HfO2
10% or more of other components.
4. The formulation of low cost alumina ceramic balls according to claim 3, wherein: the other components are oxides.
5. A process for producing low-cost alumina ceramic balls according to claim 4, comprising the steps of:
1) preparing raw materials: uniformly mixing all raw materials in the formula, ball-milling by adopting a wet method until the intermediate diameter is less than 1um, and spray-drying to obtain superfine powder;
2) molding: placing the superfine powder into a ball forming mill, adding water, mixing and stirring uniformly, sieving to obtain a ball with the particle size of 0.1-0.5mm, adding the ball into the ball forming mill, and continuously adding the water and the superfine powder onto the ball until the ball is enlarged to a ceramic ball green compact with the particle size of 0.2-15 mm;
3) and (3) sintering: heating the ceramic ball green body to 300 ℃ in a kiln at the speed of 60 ℃/hr, then preserving heat for 1hr, heating to over 1100 ℃ at the speed of 120 ℃/hr, preserving heat for 2-4 hours, and naturally cooling to room temperature.
CN202011585284.7A 2020-12-28 2020-12-28 Formula and production process of low-cost alumina ceramic ball Pending CN112723858A (en)

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN114524666A (en) * 2022-03-29 2022-05-24 郑州亚纳粉体有限公司 High-strength dark-spot-free 95 aluminum oxide ceramic and preparation method thereof

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CN102757215A (en) * 2012-08-13 2012-10-31 文斌 Composite type high strength wear resistant ceramic ball and preparation method thereof
CN103242035A (en) * 2013-05-15 2013-08-14 金刚新材料股份有限公司 Method for improving appearance quality of inertial porcelain ball
CN105000868A (en) * 2015-06-03 2015-10-28 贵阳白云云雾铝矾土煅烧加工厂 Porcelain ball with ultralow abrasion and preparation method thereof
CN107226686A (en) * 2017-06-13 2017-10-03 江苏金石研磨有限公司 A kind of Deep processing of minerals high-strength in-situ toughened aluminum oxide mill ball and preparation method thereof

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