scholarly journals Determination of granulometrical composition of the clinker by grinding in a ball mill to determine the specific consumption of additional energy

2020 ◽  
Vol 180 ◽  
pp. 04007
Author(s):  
Cristian Ciobanu ◽  
Paula Tudor ◽  
Gabriel-Alexandru Constantin ◽  
Gabriel Musuroi
Keyword(s):  
Energy Consumption ◽  
Specific Surface ◽  
Specific Energy ◽  
Ball Mill ◽  
Specific Energy Consumption ◽  
Grinding Process ◽  
Additional Energy ◽  
Second Stage ◽  
Cylindrical Metal

This paper presents results regarding the grinding behaviour of two batches of material (clinker) in a ball mill with its own two-step grinding process: the first one with a ball load, the second with a load of cylindrical metal bodies. The first step was performed until the residue R009 has reached aprox.35%, and the second stage until Blaine's specific surface was over 3800 cm2/g. Periodically, at 10-minute intervals, the fineness of the clinker and the specific energy consumption were determined. These consumptions are quantified from the first determination and relates to the weight of the material subjected to grinding (20 kg clinker / from a source), determining the grinding ability of the material.

scholarly journals Model Based on an Effective Material-Removal Rate to Evaluate Specific Energy Consumption in Grinding

Materials ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 939 ◽  
Author(s):  
Amelia Nápoles Alberro ◽  
Hernán González Rojas ◽  
Antonio Sánchez Egea ◽  
Saqib Hameed ◽  
Reyna Peña Aguilar
Keyword(s):  
Energy Consumption ◽  
Material Removal Rate ◽  
Specific Energy ◽  
Chip Formation ◽  
Material Removal ◽  
Removal Rate ◽  
Specific Energy Consumption ◽  
Industrial Scale ◽  
Depth Of Cut ◽  
Grinding Process

Grinding energy efficiency depends on the appropriate selection of cutting conditions, grinding wheel, and workpiece material. Additionally, the estimation of specific energy consumption is a good indicator to control the consumed energy during the grinding process. Consequently, this study develops a model of material-removal rate to estimate specific energy consumption based on the measurement of active power consumed in a plane surface grinding of C45K with different thermal treatments and AISI 304. This model identifies and evaluates the dissipated power by sliding, ploughing, and chip formation in an industrial-scale grinding process. Furthermore, the instantaneous positions of abrasive grains during cutting are described to study the material-removal rate. The estimation of specific chip-formation energy is similar to that described by other authors on a laboratory scale, which allows to validate the model and experiments. Finally, the results show that the energy consumed by sliding is the main mechanism of energy dissipation in an industrial-scale grinding process, where it is denoted that sliding energy by volume unity decreases as the depth of cut and the speed of the workpiece increase.

Modeling of the Energy Consumption for Warming up of Furniture Elements during their Unilateral Convective Heating before Lacquering

2016 ◽  
Vol 14 (4) ◽  
pp. 11-18
Author(s):  
N. Deliiski ◽  
N. Trichkov ◽  
Z. Gochev ◽  
D. Angelski
Keyword(s):  
Mathematical Model ◽  
Energy Consumption ◽  
Temperature Distribution ◽  
Specific Energy ◽  
Initial Temperature ◽  
Specific Energy Consumption ◽  
Numerical Approach ◽  
Convective Heating ◽  
Hot Air

Abstract A mathematical model and a numerical approach for the computation of the specific energy consumption, which is needed for warming up of flat furniture elements before their lacquering, have been suggested. The approach is based on the integration of the solutions of a non-linear model for the calculation of the nonstationary 1D temperature distribution along the thickness of subjected to unilateral convective heating furniture elements. With the help of a self-prepared software program, computations have been carried out for the determination of the change in the specific energy, which is consumed by oak furniture elements with an initial temperature of 20 °C, moisture content of 8 %, thickness of 16 mm, and length of 0.6 m, 1.2 m, and 1.8 m, during their 10 min unilateral convective heating by hot air with temperature of 100 °C and velocity of 5 m·s−1.

scholarly journals A grafo-numeric method of determination of the operation power of the rotor of EsRc-1400 bucket wheel excavator using computer simulation in SolidWorks

2019 ◽  
Vol 290 ◽  
pp. 04007
Author(s):  
Florin Dumitru Popescu ◽  
Sorin Mihai Radu ◽  
Andrei Andraş ◽  
Ildiko Kertész Brînaş
Keyword(s):  
Computer Simulation ◽  
Energy Consumption ◽  
Specific Energy ◽  
Horizontal Plane ◽  
Specific Energy Consumption ◽  
Vertical Plane ◽  
Conveyor System ◽  
Method Of Determination ◽  
Loading System

The bucket wheel excavator (BWE) is a complex continuous digging machine, used to excavate material using a layout of buckets installed on a rotor (bucket wheel), and at the same time, using the conveyor system installed on its boom, transferring this material to the main conveyor. The bucket wheel is the operating equipment, and it rotates in the vertical plane and performs (with the boom) a pivoting movement in the horizontal plane and an ascendant – descendent movement in the vertical plane. The paper presents a new grafo-numeric method of determination of the operation power of the BWE rotor, using computer simulation in SolidWorks. The aim of using virtual models for the analysis of the operation of some components of the BWE is to reduce the specific energy consumption during cutting while maintaining the installed operation power of the rotor, to increase the excavation capacity and to improve the cutting – loading system.

Energy Mapping and Optimization in Rough Machining of Impellers

2016 ◽  
Author(s):  
Zhenhua Wu ◽  
Marthony Hobgood ◽  
Mathias Wolf
Keyword(s):  
Energy Consumption ◽  
Specific Energy ◽  
Ball Mill ◽  
Removal Rate ◽  
Specific Energy Consumption ◽  
Critical Factor ◽  
Machining Parameters ◽  
Rough Machining ◽  
Cutting Depth ◽  
Energy Mapping

In this paper, energy mapping and optimization in rough machining of impellers was investigated. Experiments were first designed based on the response surface methodology (RSM) to minimize operation specific energy consumption in machining through selection of machining parameters (spindle speed, cutting depth, and feed rate) in the Siemens NX computer aided manufacturing (CAM) simulation. With the simulated machining solution and G-code, experiments were conducted on the CNC lathe and mill to cut Al 6061 impellers. The machine energy consumption was measured using a power meter. The operation specific energy was analyzed in analysis of variance (ANOVA), regression models, and desirability functions. The minimum specific energy in the rough and semi-finish turning process is 0.16 J/mm3 and 0.23 J/mm3 respectively. The minimum specific energy in the blades milling process with 6mm ball mill or 3mm ball mill is 0.08 J/mm3 and 0.42 J/mm3 respectively. In the experiment settings, it identified that cutting depth is the most critical factor to affect the specific energy consumption in impeller machining. The empirical equations between the specific energy and material removal rate (MRR) concluded that specific energy is proportional to the inverse of MRR. From the study, it would suggest that in order to minimize the specific energy in machining of impellers, it should selected the MRR as large as possible.

scholarly journals Model Based on an Effective Material Removal Rate to Evaluate the Specific Energy Consumption in Grinding

2019 ◽  
Author(s):  
A. Nápoles Alberro ◽  
H.A González Rojas ◽  
A.J. Sánchez Egea ◽  
S. Hameed ◽  
R.M. Peña Aguilar
Keyword(s):  
Energy Consumption ◽  
Material Removal Rate ◽  
Specific Energy ◽  
Chip Formation ◽  
Material Removal ◽  
Removal Rate ◽  
Specific Energy Consumption ◽  
Industrial Scale ◽  
Depth Of Cut ◽  
Grinding Process

The energy efficiency of grinding depends on the appropriate selection of cutting conditions, grinding wheel and workpiece material. Additionally, the estimation of specific energy consumption is a good indicator to control the energy consumed during the grinding process. Consequently, this study develops a model of material removal rate to estimate the specific energy consumption based on the measurement of active power consumed in a plane surface grinding of C45K with different thermal treatments and AISI 304. This model identifies and evaluates the power dissipated by sliding, ploughing and chip formation in a industrial-scale grinding process. Furthermore, the instantaneous positions of the abrasive grains during cutting are described to study the material removal rate. The estimation of specific chip formation energy is similar to that described by other authors in laboratory scale, which allows to validate the model and experiments. Finally, the results show that the energy consumed by sliding is the main phenomenon of energy dissipation in industrial-scale grinding process, where it is denoted that sliding energy by volume unity decreases as the depth of cut and speed of workpiece increase.

scholarly journals Some Peculiarities of the Process of Preparing the Zeolites Containing Breeds in a Ball Mill

2019 ◽  
Vol 8 (4) ◽  
pp. 7695-7698
Keyword(s):  
Energy Consumption ◽  
Ball Mill ◽  
Point Of View ◽  
Specific Productivity ◽  
Grinding Process ◽  
Ball Mills ◽  
Practical Point ◽  
Grinding Conditions

The article presents the results of studies of grindability of zeolite-containing rocks in ball mills with different grinding conditions. The results of studies of grindability of zeolite-containing rocks, optimization of the grinding process and determination of the specific productivity of industrial mills are presented. From a practical point of view, the data obtained can reduce the energy consumption of the grinding process of zeolite-containing rocks and increase the values of equipment efficiency and improve the quality of the finished product.

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