Ultra-wear-resistant alumina ceramic ball and preparation method thereof

Abstract

The invention provides an ultra-wear-resistant alumina ceramic ball. The ultra-wear-resistant alumina ceramic ball comprises the following chemical components: 90-95% by weight of Al2O3, 5-8% by weight of SiO2, 0.3-0.5% by weight of CaO, 0.5-0.9% by weight of MgO, 1-2% by weight of ZrO and 0.1-0.5% by weight of La2O3 / Y2O3, wherein the equivalent wear loss is less than 72 per mil. A provided preparation method comprises the following process steps of: adopting alumina powder and other mineral raw materials for burdening, refining mud, drying, calcining, synthesizing, ball-milling, granulating, forming and firing to obtain a product. According to the invention, the wear resistance of the product can achieve the standard of the alumina ceramic ball; and furthermore, the ultra-wear-resistant alumina ceramic ball has the advantages of lower cost of the raw materials, better grinding performance and high performance-price ratio of the product, is more suitable for being applied in production, and can reduce the production cost of an enterprise and improve the production efficiency of the enterprise.

Description

technical field

[0001] The invention belongs to the field of inorganic non-metallic materials (ceramics), and in particular relates to super wear-resistant alumina ceramic balls prepared from alumina and a preparation method thereof. Background technique

[0002] Ball mill is widely used in metallurgy, mining, electric power, building materials, chemical industry and other fields, and it is a kind of crushing equipment that is widely used. The grinding medium is the key to crushing materials in the ball mill. Its shape is generally a sphere or cylinder, and the materials are crushed by various complex movements such as rolling, impact, extrusion, and friction of the grinding medium in the ball mill. The quality of grinding media not only directly affects the level of production efficiency, but also affects the quality of products. Grinding media are generally classified according to density, which can be divided into: low-density grinding media (such as ordinary ceramic bal...

Examples

Embodiment 1

[0020] Embodiment 1: alumina powder 90%, kaolin 7%, talc 0.7%, TZP 2%, rare earth (La 2 o 3 / Y 2 o 3 ) 0.3%

[0021] 1. Practicing mud

[0022] ①Put the raw material mixture and water into the ball mill according to the proportion, and run for 20 hours to release the pulp;

[0023] ② After the mud enters the tank, start the mixer and the pumping machine, filter it through the vibrating screen, and flow into the iron removal tank at the same time;

[0024] ③ After passing through the iron removal tank, the slurry is pumped to the mud press by the pump to dehydrate the slurry to make mud cake;

[0025] 2. Drying: Send the prepared mud cake into the drying room and dry at 45°C until the moisture content is 3%;

[0026] 3. Calcination synthesis: Send the dried mud cake into the kiln for calcination synthesis at 1450°C;

[0027] 4. Ball milling: put the calcined semi-finished product into a ball mill for grinding;

[0028] 5. Granulation: Send the ground slu...

Embodiment 2

[0031] Embodiment 2: alumina powder 92%, kaolin 6%, talc 0.5%, TZP 1.2%, rare earth (La 2 o 3 / Y 2 o 3 ) 0.3%

[0032] 1. Practicing mud

[0033] ①Put the raw material mixture and water into the ball mill according to the proportion, and run for 22 hours to release the pulp;

[0034] ② After the mud enters the tank, start the mixer and the pumping machine, filter it through the vibrating screen, and flow into the iron removal tank at the same time;

[0035] ③ After passing through the iron removal tank, the slurry is pumped to the mud press by the pump to dehydrate the slurry to make mud cake;

[0036] 2. Drying: Send the prepared mud cake into the drying room and dry it at 50°C until the water content is 3%;

[0037] 3. Calcination synthesis: Send the dried mud cake into the kiln for calcination synthesis at 1500 °C;

[0038] 4. Ball milling: put the calcined semi-finished product into a ball mill for grinding;

[0039] 5. Granulation: Send the ground ...

Embodiment 3

[0042] Embodiment 3: alumina powder 94%, kaolin 4%, talc 0.5%, TZP 1.4%, rare earth (La 2 o 3 / Y 2 o 3 ) 0.1 %

[0043] 1. Practicing mud

[0044] ①Put the raw material mixture and water into the ball mill according to the proportion, and run for 25 hours to release the pulp;

[0045] ② After the mud enters the tank, start the mixer and the pumping machine, filter it through the vibrating screen, and flow into the iron removal tank at the same time;

[0046] ③ After passing through the iron removal tank, the slurry is pumped to the mud press by the pump to dehydrate the slurry to make mud cake;

[0047] 2. Drying: Send the prepared mud cake into the drying room and dry it at 48°C until the moisture content is 3%;

[0048] 3. Calcination synthesis: Send the dried mud cake into the kiln for calcination synthesis at 1550 °C;

[0049] 4. Ball milling: put the calcined semi-finished product into a ball mill for grinding;

[0050] 5. Granulation: Send the gro...

technical field

[0001] The invention belongs to the field of inorganic non-metallic materials (ceramics), and in particular relates to super wear-resistant alumina ceramic balls prepared from alumina and a preparation method thereof. Background technique

[0002] Ball mill is widely used in metallurgy, mining, electric power, building materials, chemical industry and other fields, and it is a kind of crushing equipment that is widely used. The grinding medium is the key to crushing materials in the ball mill. Its shape is generally a sphere or cylinder, and the materials are crushed by various complex movements such as rolling, impact, extrusion, and friction of the grinding medium in the ball mill. The quality of grinding media not only directly affects the level of production efficiency, but also affects the quality of products. Grinding media are generally classified according to density, which can be divided into: low-density grinding media (such as ordinary ceramic bal...

Examples

Embodiment 1

[0020] Embodiment 1: alumina powder 90%, kaolin 7%, talc 0.7%, TZP 2%, rare earth (La 2 o 3 / Y 2 o 3 ) 0.3%

[0021] 1. Practicing mud

[0022] ①Put the raw material mixture and water into the ball mill according to the proportion, and run for 20 hours to release the pulp;

[0023] ② After the mud enters the tank, start the mixer and the pumping machine, filter it through the vibrating screen, and flow into the iron removal tank at the same time;

[0024] ③ After passing through the iron removal tank, the slurry is pumped to the mud press by the pump to dehydrate the slurry to make mud cake;

[0025] 2. Drying: Send the prepared mud cake into the drying room and dry at 45°C until the moisture content is 3%;

[0026] 3. Calcination synthesis: Send the dried mud cake into the kiln for calcination synthesis at 1450°C;

[0027] 4. Ball milling: put the calcined semi-finished product into a ball mill for grinding;

[0028] 5. Granulation: Send the ground slu...

Embodiment 2

[0031] Embodiment 2: alumina powder 92%, kaolin 6%, talc 0.5%, TZP 1.2%, rare earth (La 2 o 3 / Y 2 o 3 ) 0.3%

[0032] 1. Practicing mud

[0033] ①Put the raw material mixture and water into the ball mill according to the proportion, and run for 22 hours to release the pulp;

[0034] ② After the mud enters the tank, start the mixer and the pumping machine, filter it through the vibrating screen, and flow into the iron removal tank at the same time;

[0035] ③ After passing through the iron removal tank, the slurry is pumped to the mud press by the pump to dehydrate the slurry to make mud cake;

[0036] 2. Drying: Send the prepared mud cake into the drying room and dry it at 50°C until the water content is 3%;

[0037] 3. Calcination synthesis: Send the dried mud cake into the kiln for calcination synthesis at 1500 °C;

[0038] 4. Ball milling: put the calcined semi-finished product into a ball mill for grinding;

[0039] 5. Granulation: Send the ground ...

Embodiment 3

[0042] Embodiment 3: alumina powder 94%, kaolin 4%, talc 0.5%, TZP 1.4%, rare earth (La 2 o 3 / Y 2 o 3 ) 0.1 %

[0043] 1. Practicing mud

[0044] ①Put the raw material mixture and water into the ball mill according to the proportion, and run for 25 hours to release the pulp;

[0045] ② After the mud enters the tank, start the mixer and the pumping machine, filter it through the vibrating screen, and flow into the iron removal tank at the same time;

[0046] ③ After passing through the iron removal tank, the slurry is pumped to the mud press by the pump to dehydrate the slurry to make mud cake;

[0047] 2. Drying: Send the prepared mud cake into the drying room and dry it at 48°C until the moisture content is 3%;

[0048] 3. Calcination synthesis: Send the dried mud cake into the kiln for calcination synthesis at 1550 °C;

[0049] 4. Ball milling: put the calcined semi-finished product into a ball mill for grinding;

[0050] 5. Granulation: Send the gro...

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