dability of limestone in their mixtures. This behavior may be attributed to the Representative samples limestone, ilmenite, and quartz, were dry batch ground separately binary mixtures – ilmenite limestone-quartz different compositions ball mill. The study aimed investigate effect mixture composition on mill product characteristics as reflected each two components. results indicated that quartz...

The aim of the present research is to simulate the heat treatment process of the autogenous grinding (AG) shell liner of Cr-Mo steel in different quenching media (still air, air blowing, oil and water) using ABAQUS software, in order to calculate the cooling curves. In this regard, the microstructure and hardness for each arbitrary point within the mill liner's bulk could be predicted based on ...

Stirred tanks are widely used in process industries for blending of singleand/or multiple-phase fluids, which often involves mass and/or heat transfer, chemical reactions, etc. Deep knowledge of flow field in the stirred tank is necessary to carry out these unit operations efficiently. As a result, extensive investigations of the flow in stirred tanks have been conducted over the past several d...

Enhancing the accuracy of an approximate cost estimate is a critical issue since the estimate ordinarily predicts the total cost of a project with insufficient project information. In order to facilitate the approximate cost estimate process, this paper proposes a computer-based integrated system that enables the flexibility to varying amount and accuracy of available information, higher accura...

Experimental data on the average mass transfer liquid film coefficient (kL) in an aerated stirred tank are presented. Liquid media used were tap water, electrolyte solutions and water with controlled addition of tensioactive material. Values of kL range from those expected for bubbles with a mobile surface to those expected for rigid bubbles. These data are quantitatively interpreted in terms o...

The purpose of current investigation was to explore the scope integrating an anaerobic digester in a decentralized municipal wastewater treatment plant for in-situ household waste. present work intends identify potential sewage sludge and food waste biogas generation. study conducted lab scale continuous stirred tank reactor having working volume 6.5 L at mesophilic temperature. paper mill used...

Lipase-displaying whole cells appear to be efficient biocatalysts because of their low preparation costs and simple recycling procedure. The combined utilization of Candida antarctica lipase B (CALB) and Rhizomucor miehei lipase (RML), separately displayed on Pichia pastoris whole cells, to produce biodiesel in co-solvent media was investigated. A response surface methodology incorporating a D-...

This study reports an improved spectrophotometric method for studying bacterial (Pseudomonas fluorescens UPER-1) transport and attachment in saturated porous media (silica sand). While studying the effect of ionic strength by the traditional packed-column spectrophotometric method, we encountered an artifact. The absorbance of a well-stirred bacterial suspension was found to decrease with time ...