• Korean Journal of Materials Research
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• v.17 no.10
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• pp.532-537
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• 2007

A series of wet grinding experiments have been carried out using a stirred ball mill to systematically investigate consideration of grinding characteristics. The particle size distribution and median diameter of the grinding consumption power for a given grinding time were considered. Also, the effect of grinding aids on particle size and grinding consumption energy defined as the summation of grinding power was investigated. The grinding aids had influence on the smaller products size and decrease grinding consumption energy because the function of grinding aids were to be attribute to the prevention of agglomeration and ball and grinding chamber wall coating of sample powder. The grinding process seemed to be controlled by the force of agglomeration of the ground products. It was demonstrated that the particle size and grinding consumption energy could be more decreased by the addition of grinding aids.

• Journal of the Korean Ceramic Society
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• v.27 no.5
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• pp.619-624
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• 1990

This study deals with the effectiveness and its reaction of stearic acid, ethyl silicate and ethylene glycol as grinding aids in grinding of Hwasun flint clay by dry ball milling process. Results are follows ; 1) It was effective that stearic acid and ethyl silicate act as the grinding aids in grinding of Hwasun flint clay. Also, it was proven that addition of stearic acid and ethyl silicate was the most effective in 1.0 and 0.75wt%, respectively. 2) The addition of ethylene glycol below 0.5wt% showed better result than none, but when added more than 0.5wt% it behaved as the inhibitor of grinding process. 3) It was investigated that grinding aids increased the ability of the particle dispression by reducing the strong chhesive forces which is caused by extensive surface tension of water.

• Cement
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• s.130
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• pp.26-34
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• 1993

For the purpose of increasing the quality of products and reducing the grinding cost of cement clinker, some aids were studied. Some of common grinding aids, such as Ethylene Glycol, Diethylene Glycol, Triethanolamine and so on, lead to the environmental

• Proceedings of the PSK Conference
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• 2003.10b
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• pp.234.2-234.2
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• 2003

Recently, the need for ultra-fine particles, especially nano-sized particles has increased in the fields preparing raw powders such as pharmaceutical additive and high value added products in the Nano-Technology processes. Therefore, the research in ultra-fine grinding is very important, especially, in nanometer grinding. In the previous paper, a series of wet grinding experiments using grinding aids using a stirred ball mill have been performed on grinding rate constant based on grinding kinetics. (omitted)

• Journal of the Korean Ceramic Society
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• v.33 no.3
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• pp.269-276
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• 1996

The effect of sintering aids on the sinterability for silcion nitride has been studied by hundreds workers. However the effect of sintering aids on the machinability as the own trobles which is the major barrier for the field applications of the ceramic components has not been fully studied. in this study the contents of Al2O3 and Y2O3 in silicon nitride were varied from 0 to 8 wt% respectively. The physical and mechanical properties of the silcion nitride were measured. The optimal microstructure of silicon nitride balls with the excellent machinability by adding with various contents of sintering aids was studied by MGF(magnetic-fluid grinding)technique. An attempt to figure out how the mechanical properties influence the machinability of silicon-nitride ball was made.

• Proceedings of the Materials Research Society of Korea Conference
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• 2009.11a
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• pp.27.2-27.2
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• 2009

Grinding characteristics for aluminium and carbon nanotubes (CNTs) powder during traditional and planetary ball milling investigated from the viewpoint of particle behaviour with the aimat developing CNT-dispersed samples ground based on powder metallurgy routes.In this work, a comparison between the pure aluminium and CNT input aluminium grinding was carried out to determine grinding time effect on size reduction.We observed that the use of the curly small-diameter multi-walled carbon nanotubes (MWCNTs) attributed to the beneficial role of the MWCNTs as grinding aids. It is suggested that careful choices of the sizes of CNTs and Al powders would allow fine-grinding of composite particles with uniformly distributed CNT reinforcements thereby ensuring improved properties of the final composites produced by low-temperature compacting.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.6
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• pp.126-133
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• 2019

This study intended to manufacture high quality cement, such as solving the quality problem of cement which has been emerging recently, along with improving grinding efficiency. To this end, the synthesis of melamine-functional pulverizing agents and the physical properties of cement applying them were reviewed and the reaction was carried out by dividing the melamine airborne compound into three stages of polymerization using methylation, sulfonation, and acid catalyst to improve the crushing efficiency of cement clinker and the physical properties of manufactured cement. The obtained melamine type copolymer was applied to the grinding process of cement clinker. And it's grinding efficiency and compressive strength were compared with DEG(diethylene glycol) and TIPA(triisopropanol amine). When it comes to the grinding efficiency, by lowering surface energy with stable adsorption from organic polymer to cement particles, the fineness showed 4-6% up. In the meantime, the compression strength hiked 30% from its initial strength compared to the conventional DEG. At the age of 28days, the strength showed approximately 13% improvement. Therefore, it is confirmed that the overall quality has been elevated in comparison with the conventional one.