P.B. Rajendran Nair

TL;DR: In this paper, the authors explore the probable mechanism for enhancement of breakage rate of particles brought about by additives during fine grinding in media mills, the flow characteristics of the ground product were estimated using the Jenike flow factor tester for blank, additive and additive delayed samples, ground to various grinding intervals up to 30 min duration.

TL;DR: In this article, the effect of the three major operating variables of a circular fluid energy mill, namely the grinding nozzle pressure, grinding nozzle size and the material feed rate on the breakage distribution parameter of the mill, were analysed using G-H solution for the size-discretised batch grinding equation.

TL;DR: In this article, the effect of material hardness on the breakage process of a circular fluid energy mill was analyzed by estimating breakage parameters using the G-H solution for the size discretized batch grinding equation, with corrections to account for the deviation from first-order kinetics during the initial stages of grinding and a back-calculation scheme.

TL;DR: In this paper, the effectiveness of calcium stearate, boric acid, and silica as additives for the fine grinding of calcite in media milling was explored, by following the size distribution of the ground product collected at various time intervals from 15 s of grinding up to 30 min, using a single size feed.

TL;DR: In this paper, a two-parameter model for the classification process expressing Ci as a function of particle size, and the polynomial functions relating the characteristic coefficients, λ and d50, with feed rates were developed.

TL;DR: In this paper, the authors proposed a volume-based population balance model, where the particle properties that are modeled are the volumes of solid, liquid, and air, respectively, and they showed that the intrinsic particle parameter that determines changes in the process and should thus be included in the population balance is the particle volume.

TL;DR: In this paper, a methodology for characterising grinding kinetics is developed based on a new criterion, ''the residual fraction'' to represent the performance of a grinding process, applied to pseudo-batch grinding of hydrargillite in a fluidised bed opposed jet mill Alpine 100 AFG.

TL;DR: In this article, the influence of several grinding parameters on the product fineness in jet mill grinding was studied experimentally with a laboratory scale spiral type jet mill, and the most significant variables in the jet mill were feed rate, volumetric flow rate of grinding air and the height of an inside classification tube for grinding at constant pressure.

TL;DR: In this paper, the effects of several grinding aids on dry fine grinding of limestone in a laboratory vibration mill were investigated, and the impacts of these aids were analyzed on different levels simultaneously: Grinding success and agglomerate size distributions were evaluated by wet and dry particle size measurements, respectively.

TL;DR: In this paper, a study of talc grinding in an Alpine 100 AFG opposed air jet mill with an inline laser granulometer is presented, where the conditions for steady state operation have been determined from continuous grinding experiments and show that overloading occurs above a critical value of feed rate classifier resulting in unstable product size distribution.