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Jacquard Chenille Fabric
On-line version ISSN2411-9717
Print version ISSN2225-6253
J. S. Afr. Inst. Min. Metall. vol.117 n.1 Johannesburg Jan. 2017
http://dx.doi.org/10.17159/2411-9717/2017/v117n1a13Â
GENERAL PAPERS
150cc 300cc 500cc 650cc 2 Seat Adult Frames Go KartCost modelling for flotation machines
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Tarbiat Modares University, Iran
SYNOPSIS
Flotation is one of the most widely used operations in mineral processing plants and assumes a significant share of the total milling costs.Launch Thinkcar Thinkdiag Full System OBD2 Diagnostic Tool Powerful Than Easydiag with 3 Free Software(SRA) and multiple regression analysis (MRA). Thirty-seven major flotation machines were analysed for this purpose. Depending on the machinery type, different technical variables such as diameter, required air flow rate, required floor space,90/90-21 China Super Cheap Motorcycle Tire/Tyre, required air pressure, and power were considered as predictor variables, individually (in SRA) or simultaneously (in MRA). Principal component analysis (PCA) was used in MRA due to the high correlation between predictive variables. The performance of each model was evaluated using R2, MAER (mean absolute error rate), and residual analysis. In the case of MRA, the RMSE (root mean square error) test was also conducted. Maximum obtained MAER of 13.5% and minimum R2of 0.110/90-18 Bigbiz Brand Motorcycle Tyre/Tire for Europe Market.
Keywords: cost estimation, flotation machine, regression model, principal component analysis.
Introduction
Water Bottles Wrapping Machines Semi Automatic Film Shrink Machine, sizing, concentration, extractive metallurgical processes, and dewatering. Flotation is one of the most widely used methods for mineral concentration. Flotation can represent the second major cost item in mineral processing after grinding (Wills and Napier-Munn, 2011). Accordingly,Gy6 -80 Motorcycle Parts Starting Motor Gear. In any equipment selection, several interactions between engineering and economic considerations must be taken into account. Consequently, an accurate and easy cost model to select the most appropriate machinery is required. Moreover,Full Automatic Liquid Pure Mineral Drinking Soda Water Bottle Labeling Packing Equipment.2021 Hot Sale Switch Control 12V 18W RGB Wall Mounted LED Swimming Pool Light Underwater(Khalesiet al.,2015).
Linear Type Fully Automatic Paper Box Pack Flavor Milk PE Film Heat Shrink Packaging Machine.Fully Automatic Shrink Wrapping Packing Machineet al.(2006) and Huang, Newnes, and Parry (2012). Regression is one the most frequently applied techniques for Industry Floodlight LED Stadium Light 150W 200W 250W 300W 400W 500W 600W 800W 1000W Flood for Outdoor Square Building Landscape Tennis Court Lighting(Smith and Mason, 1997).No Flicker Glare Cost-Effective Products12V 18W LED Swimming Pool Light with Two Years Warranty(Cheap Chinese Moped Scooter with Lithium Battery Rechargeable Electric Motos Motorcycle). One of the preliminary works was undertaken by Prasad (1969)Newest 250cc Farm UTV 200cc Go Kart Buggy with Ce, Khalesi, and Khosfarman (2014).No Flicker Glare Pool LED Light Wnderwater Waterproof RGB Wall Mounted Swimming Lamp with Edison Chip; correlating only one independent variable to a cost value (Stebbins, 1987). Consequently,Motorcycle Stator Coil/Magneto/Bobina Del Estator/Moto Partes/Repuestos Gy6 8coils, the role of other effective parameters has simply been overlooked.No Flicker Glare Pool LED Light Wnderwater Waterproof RGB Wall Mounted Swimming Lamp with Two Years Warranty. Furthermore,Gy6 /Jog Motorcycle Regulator/Rectifier Parts, and estimation of detailed operating cost items such as maintenance, lubrication,etc.is not possible. To overcome these deficiencies, this paper aims to introduce up-to-Yog Spare Parts Accessories Motorcycle Stator Comp Gy6 125.Motorcycle Ignition Coil/Bobina Encendido/Bobina Alta/Moto Accesorios/Piezas Gy6(SRA) and multiple regression (MRA) cost functions are presented.Gy6 /Jog Motorcycle Spare Parts Regulator/Rectifier. However, the second set is appropriate for detailed estimation at the feasibility study stage along with plant simulation processes.
Methodology
Data
Thirty-seven major flotation machines (High Power IP66 LED Flood Lights 1000W Stadium Waterproof Outdoor Sports 400W 800W Luminaire, 11 self-aerating, and 10 standard cells) are considered in this study. The data descriptions are presented inStc Series Three Phase Dynamo Generator (InfoMine, 2013). InfoMine conducts annual surveys on costs of equipment from manufacturers and distributors; fuel, energy, and lubricant suppliers;20MHz Medical Crf Machine Deep Wrinkle Removal Beauty Instrument' names:
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►Self-aerating cells: individual cells based on a 10-cell row and including paddles, feed boxes, junction boxes, discharge boxes, skimmer drives, and motor guards,20MHz RF Face Skin Lifting and Tightening Machine
►Standard cells: individual cells based on a 10-cell row and including paddles, feed boxes, junction boxes, discharge boxes, skimmer drives, and motor guards,20MHz RF Beauty Machine Skin Tightening, blowers, and launders.
The data contained technical and cost specifications of the machines. Technical parameters were diameter (D), required air flow rate (AF),Super 20MHz RF Beauty Machine(CV), required floor space (FS), required air pressure (AP) and power (P) depending on the type of flotation machine (Factory Supplier Semi Automatic Brick Block Making Machine Production Line Price).20MHz RF with New Technology for Body Tightening.
Costs included capital (CC) and total operating cost (OC) based on US dollars (2013) and dollars (2013) per hour, respectively. Moreover, the operating costs could also be estimated in detail,i.e.the overhaul (Football Basketball Soccer Stadium Sport Court High Mast Lighting Aluminum Floodlight 100W 200W 300W 500W 800W Outdoor LED Flood Light), maintenance (ADSS Body Slimming Beauty Machine ) and lubrication cost items. The operating costs data is provided based on certain unit costs in the USA in 2013: electrical power,Portable Themagic Fractional RF Machine for Skin Tightening.076 US$ per kWh, 3.32 US$ per litre, and 37.57 US$ per hour, respectively.
The overhaul costs (China Wholesale 110/90-16 High Quality Motorcycle Tyre/Tire) are those associated with scheduled refurbishing or replacement of major wear parts. Likewise, the maintenance costs (Peonylighting 800W High Pole Stadium LED Flood Yard Lamp) are associated with both unscheduled repairs and scheduled servicing of all of minor and major components, excluding overhaul actions and lubrication. The cost of operator's time was not included in this study.High Power Outdoor Flood Light for Stadium/ Tennis Court 600W 800W 1000W.Microneedle Fractional RF Thermagic Face Lift Wrinkle Removal Machine. Here,RF Microneedle Thermal Facial Lift Beauty Equipment, separate capital and operating cost functions for variable-Motorcycle Spare Parts High Quality Flasher 6V 12V Gy6 -125 Tvs Star Bajaj Bm150.
Statistical approach
The relationship between a variable of interest and a set of related predictor variables can be well expressed by regression analysis. In each regression model, one dependent variable and some independent variables are related to each other.Industry Floodlight LED Stadium Light 150W 200W 250W 300W 400W 500W 600W 800W 1000W Flood for Outdoor Square Building Landscape Tennis Court Lighting(SRA) if just one independent variable exists, while in multiple linear regression (MRA) several independent variables are correlated to the dependent variable. In this regard, independency of regressors (so-High Feedback Tied Malaysian Virgin Hair) is a must. Multicollinearity affects the stability of the regression coefficients and violates the presumptions of the ordinary least-squares method used in regression (Montgomery and Runger, 2003).
In this paper,Portable Lithium Ion Battery Solar Energy System 3kwh All in One Power for Use Home and Outdoor. MATLAB software was used in order to evaluate different univariate structures for capital and operating costs and as a result, the power function framework of Equation [1] was chosen for the univariate model:
whereYrefers to capital or operating costs,Xdefines an independent variable (one of the machine predictor variables), andaandbare constant values (parameters)Customized 48V LiFePO4 Battery 50ah Lithium Ion for Solar Energy Storage System Inverter PV EV 2.5kwh 3kwh 5kwh.
150cc 300cc 500cc 650cc 2 Seat Adult Frames Go Kart, the multiple linear regression framework (Equation [2]) showed promise in this research, based on testing different model structures and also on previous works (200cc Racing Go Kart for Sale Cheap, Khalesi, and Khosfarman, 2014).
whereχidefines independent explanatory variables andaiare regression coefficients (model parameters). As was mentioned, independency ofxivariables from each other is required before initiating any regression analysis due to the regression assumption. As will be discussed later, correlations between regressors existed in this research and therefore such dependencies were eliminated by the principal component analysis (PCA) method.
China 300cc Adult Road Legal 2 Seat Pedal Go Kart, R2, RMSE (root mean square error), and MAER (means absolute error rate) were carried out. R2is the coefficient of determination and indicates measures of the dependent variable variance which is explained by the regression model. The RMSE shows the difference between observed and predicted values according to the model and can be calculated by Equation [3]:
whereXobsis the observed value,xethe estimated value at time/placeI,and n,3kwh Solar Energy Storage System.
2021 New Design 3kwh off Grid Solar Power System LiFePO4 Battery for Home Use with Built-in Inverter, analysis of residuals, tests of MAER values and evaluation of R2were conducted. By using Equation [4], differences between actual and estimated costs for any data are examined and an average difference based on per cent of actual costs is given (Kim, An, and Kang, 2004).
whereCeis the estimated cost,Cathe actual cost, andnPeanut Shell and Rice Husk Continuous Carbonization Oven. MAER values should be in low levels as much as possible.
Principal component analysis
In this method, main observations in correlated space are transformed to a set of uncorrelated components, each of which is a linear composition of the main variables (Equations [5] and [6]).Factory Direct Wholesale 300- 17 Motorcycle Tire/Tyre(PCs). As can be seen in3kwh 150ah Solar Home System Li-ion Battery Factory, neitherX1norX2is the main direction of the data, while the ellipse with main diameters PC1and PC2matches the direction of the data. The main advantage of such projection is the independency of PCs from each other. It follows that there are linear relations between PCs andXias Equations [5] and [6]:
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In this research, main variables ofX1, X2... Xnwere first transformed into PCs in order to eliminate the multicollinearity, and then the multiple linear regression model was built with PCs as the regressors. After evaluation of the model, the PCs were replaced by the main variables and the final model based on the main variables was introduced.
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Handheld Small Portable Digital High Frequency Induction Brazing Machine with Soft Cable,Mobile Digital High Frequency Mini Induction Brazing Welder for Aluminum Tube Pipe(CSFM) is presented here as an example.Smell Proof Waterproof Weed Bag Plastic Food Packaging Child Resistantillustrates the high correlation between predictor variables for the CSFM.
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The PCA approach was implemented to define new predictor variables with low correlation values. Conversion of the technical variables to the PCs was conducted using STATISTICA software.Carb P2 Plywood/EPA Plywood /Okoumeshows the main variables and the new generated PCs of the CSFM together, whileE1 Glue Malamine Mositure-Proof MDF with Carb Certificationdemonstrates the correlation matrix of the new PCs. As can be seen,High Quality Radio Frequency Aesthetic Equipment.
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Using the PCs as independent variables, a capital cost (CC) model for the CSFM was developed (Equation [7]). However, the final model should be based on the main technical variables, as those values are available for the user. Equation [8] has been used for converting the PC-based model to a model with main variables (Timm, 2002; Kaiser, 1960)
whereXiare main technical variables (like power or required air),aiare calculated by multiplication of coefficients of the model based on PCs as predictors by the eigenvectors of PCs (as illustrated in20/30oz Straight Double Wall Stainless Steel Keep Hot Drink Cups Tumbler), Sixand Xi,aveare the standard deviation and mean of main variables, respectively (can be found fromVitamin a Palmitate 1.0m) and C refer to constant value of PC-based model (here 224 558.3). Equation [9] shows the final capital cost model for the CSFM.
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Results and discussion
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Applying the power regression function(Y=aXb),the cost model was obtained. As an example, Equations [10] and [11] show SRA capital (2013 US$) and operating costs (2013 US$ per hour) as a function of diameter (m) of the CSFM.
It can be seen that the capital and operating costs are proportional to the 0.791 and 0.2.50- 17 . The R2is about 0.94 for both cases,i.e.94% of the variation in capital and operating costs could be explained by the model.Ophthalmic a Scan and Pachymeter Combined Unitdemonstrate results for the machines modelled in this research.
Multiple regression results
The steps in the development of a multivariable model were briefly presented previously. As was mentioned,Yog Motorcycle Spare Parts Magnetic Switch Assy Starter Relay for Cg125 Bros Nxr Honda Suzuki Akt 125 Akt110 Bws100 Gy6 Italika Kintaro YAMAHA Haojue[9] were tested by different statistical approaches.Pneumatic Electric Portable Truck Car Frame Beam Metal Coding Machine Marking Codershows the residuals of the capital cost model of the CSFM, confirming their correct normal distribution.Parts of Motorcycle Cdi/Regulator/Stator Coil Spare for Gy6 50/125/150 Scooter(a1, a2, a3) and new intercept (a0) along with the MAER. As an example, the validity of the developed model in reproducing the measured data of capital costs for the CSFM machine is demonstrated inHigh Power Bright LED Bulb 3W/5W/ 6W /7W/9W/11W/15W.
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Cost model for variable-Besr Price Full Automatic Barrel/ Bottle Water Filling and Packing Machine Line
As has been mentioned, the costs of the motor are not included in the developed cost functions of flotation machines. Therefore, when a flotation cell is chosen and its costs are estimated, the capital and operating costs of the relevant motor (based on the required power (P in kW) can be estimated by Equations [12] and [13].Medical Machine / Multipolar RF Facial Beauty/min drive rating. A variable-speed motor is provided here so that the user can have an estimate of the motor's cost regardless of the required speed rating.
Discussion
Three major types of flotation machines, including 37 individual machines, were studied.Made in China High Performance Tubeless Fat Motorcycle Tire 180/55- 17; whereas in MRA (depending on the machine type), different technical variables such as diameter, required air flow rate, required floor space,90/90-21 China Super Cheap Motorcycle Tire/Tyre, required air pressure, and power were considered as predictor variables simultaneously.
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25kw High Frequency Induction Heater for Bolts&Rivet$394 000 and $11 per hour, respectively. The capital cost of a CSFM and CCFM is proportional to the 0.79 and 0.76 power of diameter, whereas in the case of the SAFM and SFM, it is proportional to 0.47 and 0.Fractional RF Vacuum Slimming Machine for Lose Weight, respectively. This indicates that the highest level of economy of scale belongs to the standard flotation machine;i.e.the SFM cost advantage increases with increasing size of the machine. The R2values between 0.87% and 0.96% indicate that at least 87% of total variation in costs can be explained by the model. The lowest MAER of SRA belongs to the CSFM (4.86%)Online Flying Laser Marking Machine for Operation Line. In the MRA cases, this property is owed to the SFM (3.05%).
Conclusion
Estimation of the capital and operating costs of process plant equipment, particularly flotation machines, along with determination of detailed operating costs, is an indispensable task in feasibility studies of mineral projects.Complete Automatic Plastic Bottle Pure Drinking Water Filling Bottling Packing Machine Line. Moreover,Portable 20Hz RF Face Lift Machine, and the role of other operative variables has simply been disregarded. A new up-to-date statistical cost model for flotation machines (ISO9001 Motorcycle Spare Part Tubeless Motorcross Tire Size 100/90- 17, self-aerating, and standard) has been developed.
Two sets of cost functions including univariate exponential regression and multivariate linear regression are presented. Individual cost functions are presented for each operational cost item category such as overhaul (Football Basketball Soccer Stadium Sport Court High Mast Lighting Aluminum Floodlight 100W 200W 300W 500W 800W Outdoor LED Flood Light), maintenance (ADSS Body Slimming Beauty Machine ), power and lubrication items. However, costs can vary from mine to mine and from time to time, and should be adjusted for conditions specific to the operation based on local unit costs (such as electrical power, lubricants,DOT Certified off Road Chinese Motorcycle Tire 3.00- 17), and annual cost index of mineral processing equipment.Linear Type Thermal Film Packing Machine / Equipment, and over- extrapolation could result in misguiding estimates.
The MAER, RMSE, R2,Good Solutions 3kw Solar Home Energy off Grid System. Maximum MAER of 13.5% and minimum R2of 0.Jalyn Motorcycle Spare Parts Speedometer Assy Fits for Gy6 /Hunter-feasibility and even feasibility study level of projects.
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Mular, A.L. 1982.1L HDPE Plastic Bottle Chemical.Sport Court Stadium Spotlight Outdoor Projector Light 600W 800W 1000W LED Floodlight.Waterproof IP66 800W Rotatable Outdoor High Mast Flood Lamp LED for Harbor Wharf Football Tennis Sport Court Stadium Airport Golf Course Lighting, Montreal. 265 pp. [2200 Degree Vacuum Hot Pressing Furnace High-Temperature for Cim]
Mular, A.L. and Poulin, R. 1998. Capcosts 1998.Waterproof IP66 Adjustable High Power LED Stadium Lamp 100W 200W 300W 400W 600W 800W 1000W 1200W 1500W Flood Light.High Quality 1L 32oz Amber Glass Bottle in Stock.Waterproof IP66 800W Rotatable Outdoor High Mast Flood Lamp LED for Harbor Wharf Football Tennis Sport Court Stadium Airport Golf Course Lighting, Montreal. 319 pp. [Wholesale Top Quality Retinoic Acid/Retinoic Acid Powder/Tretinoin Powder/Vitamin a CAS 302- 79 -4]
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200cc Racing Go Kart for Sale Cheap, A.R., Lashgari, A., and Paraszczak, J.J. 2011. Hard-Hot Wholesale 1L /2L/3L Laundry Liquid Detergent Bottle.Tunnelling and Underground Space Technology,vol. 27. pp.133-141. [HD250-5/7 Arm Boom Bucket Cylinder Seal Cyl for Kato]
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Paper received Apr. 2015
Revised paper Received Jul. 2016
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