A two-time molding method for a ceramic ball for cement grinding

A technology of overmolding and ceramic balls, which is applied in grain processing, etc., can solve problems such as poor performance and surface defects, achieve good lubrication performance, prevent formation and expansion of adhesion, and reduce life expectancy

Inactive Publication Date: 2017-03-15
洛阳鹏飞耐磨材料股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the invention is to solve the deficiencies of the above technical problems, to provide a secondary molding method for cement grinding ceramic balls, which improves the smoothness, wear resistance, impact resistance and other properties of ceramic balls, and screens out poor performance. , Ceramic balls with large surface defects, prolonging their service life and improving production efficiency

Method used

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  • A two-time molding method for a ceramic ball for cement grinding

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] First, put 97-99 parts of alumina micropowder, 0.1-0.5 parts of alumina whiskers, 0.4-2.5 parts of zirconia, and 0.05-0.1 parts of binder into the ball mill, add water for wet grinding, run for 30-45 hours, pass 0.063 mm sieved and put into the mud pool to stir and stale for 36-50 hours, and then remove iron to obtain a slurry with a water content of 60%, and the fineness of the slurry is D50≤1.2μm; wherein, the particle size of the alumina micropowder is 0.1- 2 μm; the zirconia is nano-particles with a particle size of 4-60 nm; the average diameter of the aluminum oxide whiskers is 0.5-2 μm, and the average length is 8-100 μm. The binding agent is La 2 o 3 , Y 2 o 3 , SiO 2 、TiO 2 , CaO, MgO, talc in any one or more of the mixture. Then, the obtained slurry is input into the spray drying tower for spray powder making, and the dried powder is transported to a large silo for 2-4 days to obtain a powder with a water content of 1.5-3%. Extrusion molding or The metho...

Embodiment 2

[0030] First, put 97-99 parts of alumina micropowder, 0.1-0.5 parts of alumina whiskers, 0.4-2.5 parts of zirconia, and 0.05-0.1 parts of binder into the ball mill, add water for wet grinding, run for 30-45 hours, pass 0.063 mm sieved and put into the mud pool to stir and stale for 36-50 hours, and then remove iron to obtain a slurry with a water content of 60%, and the fineness of the slurry is D50≤1.2μm; wherein, the particle size of the alumina micropowder is 0.1- 2 μm; the zirconia is nanoparticles with a particle size of 4-60 nm; the average diameter of aluminum oxide whiskers is 0.5-2 μm, and the average length is 8-100 μm; the binder is La 2 o 3 , Y 2 o 3 , SiO 2 、TiO 2 , CaO, MgO, talc, any one or more mixtures; the particle size of boron nitride is 20-200nm. Then the obtained slurry is input into the spray drying tower for spray powder making, and the dried powder is transported to the large silo to stale for 2-4 days to obtain a powder with a water content of 1....

Embodiment 3

[0036] First, put 97-99 parts of alumina micropowder, 0.1-0.5 parts of alumina whiskers, 0.4-2.5 parts of zirconia, and 0.05-0.1 parts of binder into the ball mill, add water for wet grinding, run for 30-45 hours, pass 0.063 mm sieved and put into the mud pool to stir and stale for 36-50 hours, and then remove iron to obtain a slurry with a water content of 60%, and the fineness of the slurry is D50≤1.2μm; wherein, the particle size of the alumina micropowder is 0.1- 2 μm; the zirconia is nanoparticles with a particle size of 4-60 nm; the average diameter of aluminum oxide whiskers is 0.5-2 μm, and the average length is 8-100 μm; the binder is La 2 o 3 , Y 2 o 3 , SiO 2 、TiO 2 , CaO, MgO, talc, any one or more mixtures; the particle size of boron nitride is 20-200nm. Then the obtained slurry is input into the spray drying tower for spray powder making, and the dried powder is transported to the large silo to stale for 2-4 days to obtain a powder with a water content of 1....

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Abstract

A two-time molding method for a ceramic ball for cement grinding is disclosed. The method includes a step of mixing raw materials and pressing the raw material mixture into a ball blank, a step of sintering the ball blank, putting a sintered product after sintering into a ball mill, adding water and boron nitride, grinding, discharging a product, and drying the product to obtain the ceramic ball. Smoothness, wear resistance, impact resistance and other properties of the ceramic ball are improved, ceramic balls having surface defects, low hardness and low stress tolerance are screened, and the production efficiency is increased. In addition, produced cement is uniform in fineness, stable in performance and low in scatter difference, and therefore abnormal deformation is not generated in a later period, and cement quality is ensured.

Description

technical field [0001] The invention relates to the field of inorganic non-metallic materials (ceramics), in particular to a secondary molding method for cement mill ceramic balls. Background technique [0002] With the development of industrial technology and economy, ceramic balls have attracted much attention in a wide range of fields due to their excellent properties such as high wear resistance, high hardness, and strong impact resistance. Ceramic balls are considered as ideal rolling elements for high speed and high precision due to their high hardness, high modulus of elasticity, low density, low friction coefficient, wear resistance, stable chemical and thermal properties. Surface defects such as unevenness and cracks on the surface of the ball have a great influence on the motion accuracy and life of the ceramic ball. Therefore, in order to achieve high surface quality requirements, prolong the service life of ceramic balls, and improve the productivity of ceramic ...

Claims

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Application Information

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IPC IPC(8): C04B35/80C04B35/10C04B35/622C04B35/626C04B35/64C04B35/63B02C17/10
CPCC04B35/803B02C17/10C04B35/10C04B35/622C04B35/62695C04B35/6303C04B35/6316C04B35/64C04B2235/3244C04B2235/386C04B2235/5276C04B2235/661C04B2235/77C04B2235/96
Inventor 贾剑光贾玉川王进伟
Owner 洛阳鹏飞耐磨材料股份有限公司
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