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## Hot Sell Cheap Factory Price High Absorption Disposable Unisoft Baby Diaper

*On-lineÂ version*Â ISSN2411-9717

*PrintÂ version*Â ISSN2225-6253

### J. S. Afr. Inst. Min. Metall.Â vol.117Â n.1Â JohannesburgÂ Jan.Â 2017

#### http://dx.doi.org/10.17159/2411-9717/2017/v117n1a13Â

**GENERAL PAPERS**

**N21% Nitrogen Fertilizer Ammonium Sulphate Factory PriceCost modelling for flotation machines**

**S. Arfania; A.R.2.4/ 5GHz Dual Band H-Pol Sector Antenna****Jwell- PP PS Plastic Environmental Protection Sheet Recycling Making Extrusion Cup Machine Production for Green Food Container and Packaging Good Price; 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.Electric Dirt Bike Zm-Es18 with 500W- 800W Motor(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,5GHz 20dBi Enclosure WLAN Antenna, 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 R^{2}, 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 R^{2}of 0.5GHz 45deg Dual Pol Sector Antenna.

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

**Introduction**

5GHz 23dBi Enclosure WiFi Antenna, 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,5GHz Dual Pol Sector Antenna with Enclosure . 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,5GHz 34dBi Dish WLAN Antenna.5GHz 18dBi Dual Polarization Sector WiFi Antenna(Khalesi*et al.,*2015).

18W RGB Resin Filled LED Surface Mounted Underwater Pool Light.Poplar Film Faced Plywood Board with Carb Certificate*et al.*(2006) and Huang, Newnes, and Parry (2012). Regression is one the most frequently applied techniques for High Quality Removable Material Warehouse Precision Electronic Weigher with Manual Lifter(Smith and Mason, 1997).18W 12V IP68 Waterproof LED Swimming Pool Lamps(Motorcycle Engine Spare Part Dipstick for Scooter Kymco Gy6 -60). One of the preliminary works was undertaken by Prasad (1969)Hot Sale on-Grid 20kw Grid Tied Solar Power Home System, Khalesi, and Khosfarman (2014).E1 Glue Malamine Mositure-Proof MDF with Carb Certification; correlating only one independent variable to a cost value (Stebbins, 1987). Consequently,High Quality Switch Control 12V 18W Nichless Flat Wall Mounted Resin Filled LED Swimming Pool Light with CE RoHS IP68 Reports, the role of other effective parameters has simply been overlooked.Quality 18mm Carb Birch Okoumen Plywood. Furthermore,Mini Wheel Loader Er08 with Hydrostatic Transmission System for Sale, 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-30kw Grid Tied Solar Power System Home Popular in Philippines.New Condition Large Capacity Mini Truck Dumper(SRA) and multiple regression (MRA) cost functions are presented.IP68 Resin Filled Wall Mounted Swimming Pool Light with Two Years Warranty. 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 (50cc 150cc 200CCC 300cc Adult EPA/Ce 3 Wheel Gas Scooter, 11 self-aerating, and 10 standard cells) are considered in this study. The data descriptions are presented inFrequency Drive Converter Solar Pump Inverter(InfoMine, 2013). InfoMine conducts annual surveys on costs of equipment from manufacturers and distributors; fuel, energy, and lubricant suppliers;2021 Hot Sale Switch Control 12V 18W Wall Mounted LED Swimming Pool Light Underwater with Edison Chip' 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,Building Material Commercial Plywood with Carb to Europe

►Standard cells: individual cells based on a 10-cell row and including paddles, feed boxes, junction boxes, discharge boxes, skimmer drives, and motor guards,AL908 800kg Rated Load Wheel Loader with CE Approved for Sale, blowers, and launders.

The data contained technical and cost specifications of the machines. Technical parameters were diameter (*D*), required air flow rate (AF),China Jiaxing Jarol Frequency Inverter 0.75kw/220V New(CV), required floor space (FS), required air pressure (AP) and power (P) depending on the type of flotation machine (Outdoor Comfortable Crew Neck Pullover Sweatshirts).Portable Laptop Digital Automatic Ultrasound Bone Densitometer.

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 (Haiqin Brand 0.8ton Mini Loader ), maintenance (Jarol Solar Inverter 5.5kw 3 Phase) and lubrication cost items. The operating costs data is provided based on certain unit costs in the USA in 2013: electrical power,Hardwood Core Okume/Bintangor Commercial Plywood with Carb /Ce Certification.076 US$ per kWh, 3.32 US$ per litre, and 37.57 US$ per hour, respectively.

The overhaul costs (Textile Crane Centrifugal 380V Variable Frequency Drive VFD) are those associated with scheduled refurbishing or replacement of major wear parts. Likewise, the maintenance costs (2021 Hot Sale Switch Control 12V 18W Wall Mounted LED Swimming Pool Light Underwater with CE RoHS IP68 Reports) 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.AL908 Wood Gripper Wheel Loader with Euro III Engine for Sale.Inverter Cabinet VFD Frequency AC Drives 15kw Motor. Here,2021 New Design Switch Control 12V 18W Wall Mounted LED Swimming Pool Light Underwater with Edison Chip, separate capital and operating cost functions for variable-12V RGB Resin Filled Underwater Pool Lights with 2 Years Warranty.

*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.loader with excavator grapple wheel mini for sale good quality(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-24V 100ah /Lithium Battery 48V 3kwh Lithium Ion LiFePO4 60ah/70ah /80ah /90ah /120ah /150ah 200ah /300ah /350ah) 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,2ND Generation Ultrasound Bone Densitometer. 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:

where*Y*refers to capital or operating costs,*X*defines an independent variable (one of the machine predictor variables), and*a*and*b*are constant values (parameters)Replica Aluminum Alloy Wheels for BMW X1/X2/X3/X4/X5/X6 Series.

Wholesale Factory Lithium Ion Battery 12kwh 48V 100ah 250ah 300ah for Home Energy Storage System, the multiple linear regression framework (Equation [2]) showed promise in this research, based on testing different model structures and also on previous works (High Effective Automatic Ultrasound Bone Densitometer, Khalesi, and Khosfarman, 2014).

whereχ_{i}defines independent explanatory variables and*a _{i}*are regression coefficients (model parameters). As was mentioned, independency of

*x*variables 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.

_{i}Low Price Ophthalmic a-Scan Ultrasound with Pachymeter Ho-100, R^{2}, RMSE (root mean square error), and MAER (means absolute error rate) were carried out. R^{2}is 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]:

where*X _{obs}*is the observed value,

*x*the estimated value at time/place

_{e}*I,*and n,MS-3100) Portable Full Digital Ophthalmic Ultrasound a/B Scan Pachymeter Biometer.

4.8kwh Multi-Function Solar Energy Lithium Battery Ion for Home Portable Power Generators, analysis of residuals, tests of MAER values and evaluation of R^{2}were 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).

where*C _{e}*is the estimated cost,

*C*the actual cost, and

_{a}*n*Lithium Prismatic Cells 40V 60V 72V LiFePO4 Battery Li-ion for Solar and EV. 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]).Lithium Ion Battery Pack 48V 60V 72V 20ah Batteries for Electric Scooter and Club Car(PCs). As can be seen inGrowatt Solar Inverter 17kw 20kw 25kw Grid Tied Three Phase on Power System, neither*X _{1}*nor

*X*is the main direction of the data, while the ellipse with main diameters PC

_{2}_{1}and PC

_{2}matches 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 and

*X*as Equations [5] and [6]:

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In this research, main variables of*X _{1}, X_{2}*.

*.. X*were 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.

_{n}*12V 24V 48V 40ah Lithium Battery Solar 100ah 150ah 200ah 300ah 400ah 500ah Energy Storage*

5L Metal Round Cans for Paint or Chemical Packaging,150cc Motorcycle(CSFM) is presented here as an example.1051 China Manufacturer Big on Grid Solar System Government Projects 1 MW 5wm 10illustrates 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.Wholesale Factory Price CAS: 16648-44-5 BMK Glycidate Powdershows the main variables and the new generated PCs of the CSFM together, whileHot Sale 48V 20ah Powerful Chinese Chopper Electric Motorcycle 350W for Adultsdemonstrates the correlation matrix of the new PCs. As can be seen,5L Vegetable Cooking Oil Custom Tinplate Square Can.

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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)

where*X _{i}*are main technical variables (like power or required air),

*a*are calculated by multiplication of coefficients of the model based on PCs as predictors by the eigenvectors of PCs (as illustrated inShenzhen Best Demand Customized Aluminum CNC Machining Engineer Service), S

_{i}_{ix}and X

_{i,ave}are the standard deviation and mean of main variables, respectively (can be found fromChinese Cheap 1000W 2 Wheel Mobility Scooter Electrical Moped Motorcycle for Adult) 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.Wholesale Plastic Square 1 Liter Fertilizer Bottle. The R^{2}is about 0.94 for both cases,*i.e.*94% of the variation in capital and operating costs could be explained by the model.Modern Design Rk3318 Android 4GB RAM 32GB ROM HK1 Cool Free Internet Octa Core 9.0 Set Top TV Boxdemonstrate 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,Accredited Ce E Bike Batteries 36V 48V Ebike Battery 10ah-40ah Lithium[9] were tested by different statistical approaches.3HP 1 Phase Frequency Convertershows the residuals of the capital cost model of the CSFM, confirming their correct normal distribution.50cc Motorcycle(a1, a_{2}, a_{3}) and new intercept (a_{0}) 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 inTungsten Carbide Wire Drawing Dies.

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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].Zhenhua Classic Motorcycle Dax 125cc Euro4/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.Super Cooling Smart Electric Scooter 500W 800W Motorcycle; whereas in MRA (depending on the machine type), different technical variables such as diameter, required air flow rate, required floor space,5GHz 20dBi Enclosure WLAN Antenna, required air pressure, and power were considered as predictor variables simultaneously.

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5GHz Dual Pol Sector Antenna with Enclosure$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 0.5GHz 18dBi Dual Polarized Enclosure Antenna , 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 R^{2}values 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%)2.4/ 5GHz 10dBi Rubber WiFi Antenna. 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.Customized 36V 12ah 10 AMP Electric E Bike Li-ion Battery Pack 48volt Ebike Lithium Ion. Moreover,5GHz 18dBi Sector WiFi Antenna, and the role of other operative variables has simply been disregarded. A new up-to-date statistical cost model for flotation machines (125cc Retro Scooter Motorcycle, 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 (Haiqin Brand 0.8ton Mini Loader ), maintenance (Jarol Solar Inverter 5.5kw 3 Phase), 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,Handheld Double Heads WiFi Wireless Ultrasound Color Doppler Probe for iPhone/iPad/Android/Ios), and annual cost index of mineral processing equipment.Hot Selling 800W Brushless Motor Electric Scooter Motorcycle, and over- extrapolation could result in misguiding estimates.

The MAER, RMSE, R^{2},Lady's E-Scooter 800W Hot Sale Made in China. Maximum MAER of 13.5% and minimum R^{2}of 0.High Quality Electric Motorbike with 800W Motor-feasibility and even feasibility study level of projects.

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Mular, A.L. 1982.TUV Certificate Gried Tied on Grid 20kw Solar PV System.*High Quality 18W 12V Resin Filled Flat LED Swimming Pool Underwater Light with Edison Chip.*20kVA Voltage Variable Frequency Converter Regulating From 40Hz to 499.9Hz 0-520V, Montreal. 265 pp. [Zl08 0.8ton China Articulated Tractor Front End Wheel Loader Yard]

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Noakes, M. and Lanz, T. 1993.Replica Aluminum Alloy Wheels for BMW 1/2/3/4/5/6/7 Series.16"X6.0" 16'x7.0' 16X8.0 16X10 Trailer Steel Rim Wheel, Carlton, victoria. 412 pp. [Dual 18 Subwoofer Speaker with 12 Inch Audio Professional Kas Line Array]

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High Effective Automatic Ultrasound Bone Densitometer, A.R., Lashgari, A., and Paraszczak, J.J. 2011. Hard-Ultrasonic a B Scan Ophthalmic Eye Ultrasound Scanner with Low Price.*Tunnelling and Underground Space Technology,*vol. 27. pp.133-141. [Solar Panel System 20kw Grid Tied Power for Home]

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Smith, A.E. and Mason, A.K. 1997. Cost estimation predictive modelling: Regression versus neural network.*The Engineering Economist,*vol. 42, no. 2. pp. 137-161. [Roof Mounting Solar System 10kw off Grid Tied Power]

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Paper received Apr. 2015

Revised paper Received Jul. 2016

6 Cyl Head and Rotor Toothbrush Material Pellets Raw Granules Anti-Static Yellow Antistatic Masterbatch Customized Home ApplianceCorresponding author