The influence of ball-milling on improving the performance of mesocarbon microbeads based carbon blocks

Xia, Hongyan; Wang, Jiping; Huang, Bin; Shi, Zhongqi; Liu, Guiwu; Qiao, Guanjun

doi:10.1016/j.msea.2011.09.030

Cited by 8 publications

(9 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The agglomeration that appears on the results of milling will result in decreased mechanical properties of graphite and graphite composites [5]. Milling process with a longer time, will make particle reduction more optimum and homogeneity of graphite higher [1] [6], this is supported by the results of SEM in Figure 4 c, where the size of graphite particles is more homogeneous and agglomeration has been reduced.…”

Section: Resultsmentioning

confidence: 77%

Graphite Particle Reduction Process using High Energy Milling

Kusumawati¹,

Nurhuda²,

Santjojo³

et al. 2018

Proceedings of the International Conference on Science and Technology (ICST 2018)

View full text Add to dashboard Cite

Graphite is a material that has excellent mechanical and thermal properties, as well as a wide application level, especially in the form of nanoparticles. High Energy Milling (HEM) is one of the methods used in the formation of nanoparticles by reducing particle size mechanically. In this research, variation of ball mill ratio to number of graphite in milling (2 : 1, 3 : 1 and 4 : 1) and milling time (1, 2, 3 and 4 hours), with rotation speed 750 rpm, to obtain graphite nanoparticles the optimum. Ball mill comparison to the amount of graphite in the process of milling, done by controlling the amount of graphite as much as 5.28 grams. The graphite nanoparticles formed through the HEM process have particle sizes ranging from 403 to 58 nm. Graphite particle size with increasing time and ratio ball mill: graphite, smaller, except on variation of ratio ball mill : graphite, 2 : 1, with 4 hour milling time, this is supported by SEM data showing the change of graphite particles shape into flakes, so the particle diameter measurable increase.

show abstract

Section: Resultsmentioning

confidence: 77%

Graphite Particle Reduction Process using High Energy Milling

Kusumawati¹,

Nurhuda²,

Santjojo³

et al. 2018

Proceedings of the International Conference on Science and Technology (ICST 2018)

View full text Add to dashboard Cite

show abstract

“…Generally, high-quality carbon and graphite blocks with high mechanical properties are often produced using small carbon fillers, which can inhibit crack formation. ,, However, the existence of pores or voids, normally generated from the imperfect packing and volatility of the pitch binder, directly impacts the decrease of mechanical properties. These pores can be filled by using impregnation, which upgrades the product to higher quality.…”

Section: Resultsmentioning

confidence: 99%

“…The preparation of a block with a smaller grain size yields a product with higher density, hardness, and flexural strength, especially for ultrafine products with grain sizes less than 10 μm. As a result, the production of ultrafine graphite scrap with a controlled particle size plays a crucial role in the fabrication of carbon blocks. ,, …”

Section: Introductionmentioning

confidence: 99%

“…As a result, the production of ultrafine graphite scrap with a controlled particle size plays a crucial role in the fabrication of carbon blocks. 6,8,9 T h i s c o n t e n t i s Raw graphite scrap from cutting and tooling processes normally has a high degree of purity and crystallinity due to the high graphitization temperature of graphite blocks and has larger particle sizes, ranging from 1 to more than 100 μm, which is unsuitable for the production of ultrafine grain products. The ball milling process is a particle size reduction method, utilizing impaction and shearing of ceramic balls inside the milling chamber to break particles to a smaller size with a high output capacity, which is often applied to manufacture ultrafine graphite particles.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Improvement of Ball Mill Performance in Recycled Ultrafine Graphite Waste Production for Carbon Block Applications

Kanlayakan,

Lhosupasirirat,

Amnatsin

et al. 2023

ACS Omega

View full text Add to dashboard Cite

A carbon block is a carbonaceous material used in various applications such as bearings, mechanical seals, and electrical brushes. This work aims to fabricate carbon blocks from industrial graphite waste, a residue from the cutting and tooling process of graphite block production. The ball milling process was used to fabricate ultrafine graphite waste to enhance the packing of carbon blocks. The milling performance was profoundly affected by dispersing agents in which sodium dodecyl sulfate (SDS), lignosulfonate (LS), and mixed dispersant (LS−SDS) were applied. The results showed that LS−SDS had the best milling performance, the greatest grinding index, and a flowable slurry, indicating the potentiality of this formulation for the environmentally friendly manufacture of ultrafine graphite waste. Carbon blocks were prepared from oven-dried ultrafine graphite waste, which was mixed with amorphous carbon and pitch. This carbon mixture was formed a block by compaction before carbonization and impregnation. The density of the fabricated carbon blocks increased from 1.76 to 1.83 g/cm 3 after impregnation along with the increase in hardness, flexural strength, and reduction in electrical resistivity from 83, 62 MPa, and 40 μΩ m to 88, 81 MPa, and 39 μΩ m, respectively. The physical properties of carbon blocks prepared from ultrafine graphite waste were comparable to the properties of typical pristine carbon products.

show abstract

“…Much effort has been devoted to studying MCMB sintering reactions and improving the mechanical properties of the resulting products. Various additives, such as: ZrB 4 C [5], Ti/Ni [8], carbonblack (CB) [9,10], carbon-nanotube [11], SiC [12], and Ti [13] have been shown to promote the sintering reaction and improve the products' mechanical strength. In addition to the kinetic aspects of the reaction, the physical properties of the viscous raw materials, e.g.…”

Section: Introductionmentioning

confidence: 99%