Author
R. Vedaraman
Bio: R. Vedaraman is an academic researcher from Indian Institute of Technology Madras. The author has contributed to research in topics: Grinding & Aluminium powder. The author has an hindex of 2, co-authored 3 publications receiving 10 citations.
Topics: Grinding, Aluminium powder
Papers
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TL;DR: In this paper, the effects of solid and liquid additive on a dry grinding process were studied at four additive concentrations and two grinding times, using a laboratory vibration ball mill with calcite as the feed material, under selected milling conditions.
7 citations
TL;DR: In this article, the effect of grinding aids on the grinding characteristics of aluminum in a vibration mill under an inert atmosphere of nitrogen has been investigated and it was found that the use of grinding aid is essential in grinding of atomized aluminum.
Abstract: Fine aluminum powder is widely used in making paints, printing inks, slurry explosives, pyrotechnic chemicals etc. Hence the production of aluminum powder is highly important. In this paper the effect of grinding aids on the grinding characteristics of aluminum in a vibration mill under an inert atmosphere of nitrogen has been investigated. It is found that the use of grinding aids is essential in grinding of atomized aluminum. Among four different grinding aids, stearic acid appears to be the best grinding aid.
5 citations
TL;DR: In this article, the effect of feed size, additive concentration, weight ratio of the feed to grinding media and ball filling on the grinding characteristics was studied. But the results were limited to the case where the feed size was an insignificant variable in the range studied.
1 citations
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TL;DR: A review has been presented in this paper, where many of these techniques are still at developmental stages and many of them have been explored for decades, however, they are still in the early stages of their development.
Abstract: Pretreatment of ores to improve energy efficacy of grinding has been explored for decades. However, many of these techniques are still at developmental stages and a review has been presented in thi...
46 citations
TL;DR: In this paper, a comprehensive review of the application of grinding aids in the mining process is presented, with a focus on the effect of these materials on the particle size reduction process.
Abstract: Grinding aids (GAs) have been an important advent in the comminution circuits. Over the last few decades, in order to address the high energy consumption and scarcity of potable water for mineral processing, chemical additives have become a promising alternative. Using GAs can have some advantages such as enhancing grinding efficiency, reducing water usage, improving material flowability, and narrowing the particle size distribution of the grinding products. A study on the effect of GAs on size reduction units is crucial for the beneficiation value chain of minerals and the impact on downstream processes. However, our understanding of the effects of these materials on the particle size reduction is quite limited. This article analyses the literature, which used GAs and provides a comprehensive review of their applications in the ore beneficiation processes. The outcomes of this investigation indicated that the current understanding on the mechanism of GA effects focuses only on their impacts on the product fineness and size distribution, and neglecting the aspect of energy expended and physicochemical environment. The application of GAs is mainly for rationalisation of energy where the type of reagent, pH, and ionic strength of the grinding environment is important. Gaps in knowledge of GAs are discussed in the context of addressing their use in the mineral industry, considering the mechanism of their effect, effect on grinding efficiency, and effect on the downstream processes. Addressing these gaps will pave the way for the application of GAs in improving size reduction efficiencies, which ultimately reduces environmental impacts.
35 citations
TL;DR: It is shown that the variety of applied substances, ground materials, target finenesses and analysis methods complicate the development of a comprehensive understanding of grinding aids, and how the mill type and grinding conditions influence the additive effects.
24 citations
Patent•
22 Dec 2010
TL;DR: In this article, the use of glycerol and polyglycerols as an agent to improve the self-dispersing properties of a mineral material in an aqueous composition was proposed.
Abstract: The invention relates to the use, during a step of dry grinding a mineral material, of formulations containing glycerol and/or polyglycerols, as an agent to improve the self-dispersing properties of said mineral material in an aqueous composition. The immediate viscosity of the final composition is thus reduced and kept stable over time. Furthermore, the amount of foam formed during the step of dispersal in the water is reduced.
15 citations
01 Jan 2015
TL;DR: In this paper, two preparation methods to precisely control the materials structure and elemental composition are discussed: top-down and bottom-up fabrication, which are classified into a "top-down" and "bottom-up" fabrication process.
Abstract: In this chapter, authors discuss two preparation methods to precisely control the materials structure and elemental composition. These methods are classified into a “top-down” and “bottom-up” fabrication process. In “bottom-up” synthesis, the material is constructed from atom or molecules to the cluster until the designed shape is achieved, akin to building a house from bricks (simply saying from small to big). In the “top-down” synthesis, the corresponding material is reconstructed or deformed, ablated to form different structures, akin to a sculptor chiseling a block of marble to create a statute of definite shape and size.
5 citations