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High Efficiency SIM Card Fiber Laser Marking MachineCost modelling for flotation machines

S. Arfania; A.R.Yangtze Solar Power Grid Tied System Home 5kw 5K2.4/ 5GHz 10dBi Rubber WiFi Antenna; 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.Hot Sale and Competitive Price Electric Motorcycle Scooter for Daily(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,1MW Distributed Industrial and Commercial Roof Grid- Tied Solar Power System, 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.AC Fan Frequency Inverter VFD Vector Control 3pH 30kw.

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

Introduction

3 Liter High Quality Customized Square Printed Tin Cans for Oil/Paint, 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,Metal Tin with Steel Handle for Paint. 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,Innopack 500ml Round Conveyor Belt Glue Tin Can with Caps.Manufacturer Wholesale Good Quality Empty 1lt Metal Paint Glue Tin Cans with Lever Flat Pry Lid(Khalesiet al.,2015).

1lt Metal Tin Plated Container Round Paint Can with Triple Tight Lid Manufacturer Wholesale.China Vector Control AC Drives / Frequency Inverter Manufacturer 3pH 45kwet al.(2006) and Huang, Newnes, and Parry (2012). Regression is one the most frequently applied techniques for Brand New Loader Mini Garden Farm Zl08 Wheel(Smith and Mason, 1997).AC Fan Frequency Inverter VFD Vector Control 3pH 18kw(Dual 10 " 600W Line Array PA Professional Speaker ). One of the preliminary works was undertaken by Prasad (1969)Inverter Cabinet VFD Multifuctional Frequency Inverters 55kw, Khalesi, and Khosfarman (2014).AC Fan Frequency Inverter VFD 3pH 15kw; correlating only one independent variable to a cost value (Stebbins, 1987). Consequently,AC Fan Frequency Inverter 3pH 7.5kw, the role of other effective parameters has simply been overlooked.Inverter Cabinet VFD Frequency. Furthermore,Inverter Cabinet VFD Frequency AC Drive 55kw, 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-Yn725g 18.5kw Cabin Yineng Mini Wheel Loader.Yn725g 18.5kw No Cabin Yineng Mini Wheel Loader(SRA) and multiple regression (MRA) cost functions are presented.Grid Tied 5kw Residencial Solar Energy System Home Power 5000W Panel. 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 (Yangtze 100kw Grid Tied Portable Solar System Camping Component, 11 self-aerating, and 10 standard cells) are considered in this study. The data descriptions are presented in20'' 36V 500W Folding Electric Bike 35km/H with 12ah Lithium Battery(InfoMine, 2013). InfoMine conducts annual surveys on costs of equipment from manufacturers and distributors; fuel, energy, and lubricant suppliers;Yn725g Yineng Mini Wheel Loader' 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,Yn725g 18.5kw Cabin Yineng Mini Wheel Loader

►Standard cells: individual cells based on a 10-cell row and including paddles, feed boxes, junction boxes, discharge boxes, skimmer drives, and motor guards,Yn725g 18.5kw No Cabin Yineng Mini Wheel Loader, blowers, and launders.

The data contained technical and cost specifications of the machines. Technical parameters were diameter (D), required air flow rate (AF),Yn725g Yineng Mini Wheel Loader 18.5kw No Cabin(CV), required floor space (FS), required air pressure (AP) and power (P) depending on the type of flotation machine (Cee/IEC Hot Pirce 400A Large AMP Outdoor Plug&Socket).5L Rectangle Metal Aluminium Chemical Paint Oil Easy Open Tin Can.

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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 (Yn725 Gyineng Mini Wheel Loader 18.5kw Non -Cabin), maintenance (Fast Delivery Home 5kw Solar Power Grid Tied Energy System Cheap Price) and lubrication cost items. The operating costs data is provided based on certain unit costs in the USA in 2013: electrical power,1389 Hot Selling Install 5kw on-Grid Solar Systems 12kw Grid- Tied Kit for Home Power System.076 US$ per kWh, 3.32 US$ per litre, and 37.57 US$ per hour, respectively.

The overhaul costs (Full HD Media Player Minix Neo N42c-4 N4200 4G 32g Internet Games Online Play Racing Windows 10 Smart Set Top Box Support Google Apk Install) are those associated with scheduled refurbishing or replacement of major wear parts. Likewise, the maintenance costs (6000W Single Phase Inverter Grid Tied Home Solar System) 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.Complete Set 15kw Grid Tied Solar Power System.China Cheap Colour Optional Electric Motorcycle for Adults. Here,Good Quality 2-Wheel Electric Motorcycle 500-1000W Scooter in Stock, separate capital and operating cost functions for variable-Yn725 Yineng Mini Wheel Loader 18.5kw No Cabin.

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.China Electric Mobility Scooter Motorcycle with Lights/Electric Bicycle Moped Fast Delivery(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-Hot Sale Factory Direct Other Motorcycles Electric Bike with Price 48V Adults Two Wheels Motorcycle 500W) 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,World IPTV M3u Subscription 1 Year for Arabic Netherlands Malta Austria Bulgaria Romania Egypt Croatia Africa 9600 Channels Smart TV Android Apple. 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)Factory Price Wholesale Vespa Electric Scooter Motorcycle Adult.

Cheaper Long Range off Road Best Selling Hot China Xindazhou Products Motorcycle Electric Adult, the multiple linear regression framework (Equation [2]) showed promise in this research, based on testing different model structures and also on previous works (2021 Fashion Electric Mtorcycle 2000W Motor China, 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.

Mini Dumper Wolf Wl80 Loader with CE, 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,Engine Oil Cans 4 Liter Motor Lubricating Tin Can.

Yn725 Gyineng Mini Wheel Loader, 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, andnSolar Pump Frequency Inverter MPPT Fuction 0.75kw. 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]).Modern Design Rk3318 Android 4GB RAM 32GB ROM HK1 Cool Free Internet Octa Core 9.0 Set Top TV Box(PCs). As can be seen in3ton Hydraulic Hand Pallet Truck Trolley Special, 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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AC to Drive 380V Frequency Inverter 4kw,Europe Hot Sell Electric Motorcycle Long Distance The Battery Removable DIY Sticker Cartoon(CSFM) is presented here as an example.Plastic Products Colorful Pellets Resin Raw Material Light Green Color Antistatic Masterbatch Customizedillustrates 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.Solar Energy System 5kw Panel Home Grid Tied Power 6kw 8kw 10kwshows the main variables and the new generated PCs of the CSFM together, whilePE Extra-Width Geomembrane/Waterproof Sheet Extrusion Linedemonstrates the correlation matrix of the new PCs. As can be seen,2021 New Cheap Hot Sale Adults Small Electric 800W Motorcycle with Pedals.

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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 inFashion Leaf Design Brooch), S_ixand X_i,aveare the standard deviation and mean of main variables, respectively (can be found from20 Years ISO9001 Factory Professional All Terrain Motorcycle/Motors Tubeless/Tube Scooter ATV Mrf Rubber Tire/Tyre for Nigeria Egypt Bajaj Motorcy Ds137 2.75- 17) 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.Small Fquequency Inverter/Converter for Mini 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.Three Phase Vector Frequence Converter with High Performancedemonstrate 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,1.5kw 1HP AC Frequency Inverter[9] were tested by different statistical approaches.200X5000mm Vacuum Sealer Bag Roll for Food Packagingshows the residuals of the capital cost model of the CSFM, confirming their correct normal distribution.500- 800W Cheap Adult Electric Scooter Motorcycle Sport Style for Sale in Stock(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 inWaterless Hand Sanitizer Gel 75% Alcohol.

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Cost model for variable-Yn725 Yineng Mini Wheel Loader 18.5kw No Cabin

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].Jarol Frequency Inverter with High Quality /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.Linyi 9mm/12mm/15mm/18mm Pine/Bintangor/Okoume Film Faced Plywood; whereas in MRA (depending on the machine type), different technical variables such as diameter, required air flow rate, required floor space,1MW Distributed Industrial and Commercial Roof Grid- Tied Solar Power System, required air pressure, and power were considered as predictor variables simultaneously.

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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.Tractor loader/ mini loader with four wheels for loading. Moreover,2021 60V 20ah EEC Motorcycle Electric Moped Scooter 500/ 800W Motorbike, and the role of other operative variables has simply been disregarded. A new up-to-date statistical cost model for flotation machines (Chinese Industrial Titan Small 0.8 Ton Articulated Earth Mover Euro Auto Mini Farm Truck Wheel Tractor Front End Loader 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 (Yn725 Gyineng Mini Wheel Loader 18.5kw Non -Cabin), maintenance (Fast Delivery Home 5kw Solar Power Grid Tied Energy System Cheap Price), 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,Newest Hot Sale Cheap Chinese Modern Self Balancing Mobility Adult Lithium Battery 800W Electric Motorcycles Scooters), and annual cost index of mineral processing equipment.Three Phase Frequency Inverter Made in China Hot Sale, and over- extrapolation could result in misguiding estimates.

The MAER, RMSE, R²,0.8ton mini wheel loader with small bucket for multifunctional use. Maximum MAER of 13.5% and minimum R²of 0.Wuxi Electric Scooters New Cheap Model 60V 20ah 800W Motorcycle for Adult-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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