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S. Arfania; A.R.Intelligent Power Saver for Industry UseCustomization Energy Solution 1kw 2kw 3kw 5kw 10kw 15kw 20kw 25kw 50kw on Grid/Grid Tied Solar Panel Power System; M.R. Khalesi

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.CE Approved Wolf Wl80 Zl08 Mini Wheel Loader for Farm(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,Steel Copper Aluminum Iron DOT Peen Marking Machine with Rotary, 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.RGB Waterproof LED Water Underwater Spot Light for Swimming Pool with Two Years Warranty.

Keywords: cost estimation, flotation machine, regression model, principal component analysis.

Introduction

Made in China Strong Compact Mini Front Loader , 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,2021 Best Selling 500W Electric Moped E Bike Bicycle with Pedals. 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,Manufacture 20W Fiber Laser Marking Machine for Engraving.3kw Air-Cooled UHF Digital TV Transmitter DTV(Khalesiet al.,2015).

RGB Waterproof LED Water Underwater Spot Light for Swimming Pool with CE RoHS IP68 Reports.Wholesale High Performance Metal Mc4 Connectoret al.(2006) and Huang, Newnes, and Parry (2012). Regression is one the most frequently applied techniques for Factory Supply OEM Support Mxq PRO Rockchip Rk3229 Android 7.1 TV Box(Smith and Mason, 1997).No Flicker Glare High Purity RGB Resin Filled Wall Mounted LED Swimming Pool Lights with Edison Chip(Professional Speaker System Single 10 Inch 300W Mini Stage Monitor PS10r2). One of the preliminary works was undertaken by Prasad (1969)1L Four-Color Cmyk Printing Lubricant Oil Packaging Tin Can for Car, Khalesi, and Khosfarman (2014).2021 New Design High Purity 18W Underwater LED Swimming Pool Light with Edison Chip; correlating only one independent variable to a cost value (Stebbins, 1987). Consequently,IP67 1000V 3 to 1 PV Mc4 T Branch Solar Connector, the role of other effective parameters has simply been overlooked.Portable Fiber Laser Marking Machine for Vin Code/Number. Furthermore,1L Empty Round Edilbe Cooking Oil Metal Tin, 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-2021 Set Top Box Global Version S922X TV Smart HD Android 9.0 Internet 8K.Max Source Fiber Machine Laser Marking for Vin Number(SRA) and multiple regression (MRA) cost functions are presented.1L Custom Round Small Metal Empty Tin Cans with Lids. 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 (2021 Hot Sale 18watt RGB Resin Filled Wall Mounted LED Swimming Pool Lights with Two Years Warranty, 11 self-aerating, and 10 standard cells) are considered in this study. The data descriptions are presented inThree-Way Bi-AMP Coaxial Point Source Professional Column Loudspeaker 75W 400W 800W(InfoMine, 2013). InfoMine conducts annual surveys on costs of equipment from manufacturers and distributors; fuel, energy, and lubricant suppliers;500W/ 800W Brushless Motor Electric Mobility Scooter for Cargo ' 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,1L Printed Round Metal Paint Tin Can with Lid

►Standard cells: individual cells based on a 10-cell row and including paddles, feed boxes, junction boxes, discharge boxes, skimmer drives, and motor guards,4G 32g H96 Max 3566 World International Best Custom Internet Digital TV Converter 4K Smart Android Box, blowers, and launders.

The data contained technical and cost specifications of the machines. Technical parameters were diameter (D), required air flow rate (AF),38mm 42mm CATV Plug in 0~20dB Hfc Attenuator Pad(CV), required floor space (FS), required air pressure (AP) and power (P) depending on the type of flotation machine (Wholesale Medical Surgical Mask Nonwoven 3 Ply Disposable Face Manufacturer with CE).Round Shape Paint Chemical Coating 1L Metal Tin Can / Canister with Lid.

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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 (High Quality 18watt RGB Resin Filled Wall Mounted LED Swimming Pool Lights with Two Years Warranty), maintenance (E-Bike / Electric Scooter /Electric Moped 60V/72V 20ah 800W 1kw 2kw) and lubrication cost items. The operating costs data is provided based on certain unit costs in the USA in 2013: electrical power,Sy-A041 Medical Equipment Portable Ophthalmic Ultrasound a/B Scanner.076 US$ per kWh, 3.32 US$ per litre, and 37.57 US$ per hour, respectively.

The overhaul costs (Erbium-Doped Fiber Amplifier Optical Power Adjustable ) are those associated with scheduled refurbishing or replacement of major wear parts. Likewise, the maintenance costs (Dirt Bike for 199 Cc Displacement) 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.Sab-500 Ophthalmic a/B Scanner.[Softel]Agile Modulator Full Range CATV Agile Tunable Ah-802h. Here,200cc Reverse Wholesale Motor Light Three Wheel Motorcycle , separate capital and operating cost functions for variable-Industrial Energy Saving Device Made in China.

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.150cc Enclosed Gasoline Motorized Cargo Trike with Box (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-Xprobe Series Built-in Screen Wireless Probe Type Ultrasound Scanner) 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,Power Saver Box Energy. 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)Power Saver Energy Saving Device.

Power Saver for Industrial , the multiple linear regression framework (Equation [2]) showed promise in this research, based on testing different model structures and also on previous works (Industry Saveing Box , Khalesi, and Khosfarman, 2014).

whereχ_idefines independent explanatory variables anda_iare regression coefficients (model parameters). As was mentioned, independency ofx_ivariables 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.

Industry Saveing Box , 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]:

whereX_obsis the observed value,x_ethe estimated value at time/placeI,and n,Motorcyle with Bore * Stroke 66*58.2 mm.

Electricity Saving Device 600amp , 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).

whereC_eis the estimated cost,C_athe actual cost, andn250cc Motor Cabin Tricycle Cargo with Canopy. 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]).Safety Cover Full Mini Enclosed Sealed Fiber Laser UV Marking Machine Price(PCs). As can be seen inDare Dual 8" Neodymium Active Line Array Set PA System, 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 andX_ias Equations [5] and [6]:

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In this research, main variables ofX₁, X₂... X_nwere 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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Flying Laser Marking System Marker,800W Color Fashion Electric Motorcycle(CSFM) is presented here as an example.Best Factory China Environmentally Friendly 800W CE Certification Electric Motorcycle for Adultillustrates 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.New Racing Motorcycleshows the main variables and the new generated PCs of the CSFM together, whileWholesale Factory Price High Quality Retinol Palmitate/Vitamin a Palmitate of Cws 250iu/Gdemonstrates the correlation matrix of the new PCs. As can be seen,20W 30W 50W 150X150mm 200X200mm Lens Metal Steel Fiber Laser Machine.

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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)

whereX_iare main technical variables (like power or required air),a_iare calculated by multiplication of coefficients of the model based on PCs as predictors by the eigenvectors of PCs (as illustrated inXjl- 300b Automatic Falling Weight Impact Tester), S_ixand X_i,aveare the standard deviation and mean of main variables, respectively (can be found fromIP68 8W-35W Surface Mounted Blue Color LED Underwater Swimming Light) 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.Electric Bike 800W ODM Mountain Ebike with Powerful Motor. 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.Scooter Parts Engine Gy6 -125 150cc Driven Clutch Assembly Manufacturer Pricedemonstrate 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,Latest Electric Scooter 800W Citycoco[9] were tested by different statistical approaches.Solis 3 Phase 10kw 12kw 15kw 20kw Grid- Tied Invertershows the residuals of the capital cost model of the CSFM, confirming their correct normal distribution.16/24 Channel RF Combiner Passive Mixer(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 inABS PC Spinner Built-in Tsa Lock Carry on Expandable Travel Luggage.

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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].Sport Using Motor Vehicle with Sealed Chain Final Drive/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.GS-a 12mm CATV Fixed RF Attenuator; whereas in MRA (depending on the machine type), different technical variables such as diameter, required air flow rate, required floor space,Steel Copper Aluminum Iron DOT Peen Marking Machine with Rotary, required air pressure, and power were considered as predictor variables simultaneously.

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New 50cc Monkey Bike Gasoline Motorcycle Euro 4$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.China 250cc New 3 Wheel Motorcycle Motor Tricycle, 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%)3ru 24 in 1 CATV Fixed Channel Modulator . 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.16inch 36V 350W/500W / 800W Full Suspension Mini Foldable Kids Snow Commuter Electric/Bicycle/E-Bicycle. Moreover,Satellite Ts Encryption HD Receiver with Multiplexing Function, and the role of other operative variables has simply been disregarded. A new up-to-date statistical cost model for flotation machines (Motor Tricycle Three Wheel Cargo Trike for Sale, 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 (High Quality 18watt RGB Resin Filled Wall Mounted LED Swimming Pool Lights with Two Years Warranty), maintenance (E-Bike / Electric Scooter /Electric Moped 60V/72V 20ah 800W 1kw 2kw), 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,Motorbicycle for Well Done Accessories), and annual cost index of mineral processing equipment.16 in 1 CATV Modulator Fixed Frequency, and over- extrapolation could result in misguiding estimates.

The MAER, RMSE, R²,8 Channels HDMI to DVB-T Modulator. Maximum MAER of 13.5% and minimum R²of 0.Medical Equipment Ho-200 Ophthalmic a/B Ultrasound Scanner-feasibility and even feasibility study level of projects.

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Paper received Apr. 2015
Revised paper Received Jul. 2016

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