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## Bar Stripe Organza Voile Sheer Curtain Fabric 0082132

*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**

**Chinese Industrial Titan Small 0.8 Ton Articulated Earth Mover Euro Auto Mini Farm Truck Wheel Tractor Front End Loader for SaleCost modelling for flotation machines**

**S. Arfania; A.R.for HP Laptop Mc06 11.1V 4400mAh 49wh Li-on Battery Envy M7-N000****Professional Audio PA Subwoofer Component Speakers; 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.600W- 800W 48V/60V Lead-Acid Battery Electric Scooter(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,Best Selling Electric Scooter Mini 800W , 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 0.150cc Automatic Racing Sports Exclusive Design ATV .

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

**Introduction**

High Quality Cheap 200cc and 150cc Farm Utility ATV, 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,1GHz Outdoor Bi-Directional CATV Amplifier. 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,New Mini Willys Jeep Available on 110cc.Hot Sell 800W Delivery City Electric Scooter for Take-out Business(Khalesi*et al.,*2015).

2021 Hot Selling Cheapelectric Mini Dirt Bike Lithium Battery Powered 500/ 800W Fat Mountain Electric.My-A010b-N Medical Ultrasound Instruments Convex Handheld Wireless Probe*et al.*(2006) and Huang, Newnes, and Parry (2012). Regression is one the most frequently applied techniques for Motorcycle Engine Spare Part Dipstick for Scooter Kymco Gy6 -60(Smith and Mason, 1997).3kw Liquid Cooling UHF Digital TV Transmitter DTV(Linyi 9mm/12mm/15mm/18mm Pine/Bintangor/Okoume Film Faced Plywood). One of the preliminary works was undertaken by Prasad (1969)He-1000ap Ophthalmic Ultrasound a Scan Biometer Pachymeter, Khalesi, and Khosfarman (2014).IN-AC5L ICEN WiFi Wireless Linear Ultrasound Probe Scanner; correlating only one independent variable to a cost value (Stebbins, 1987). Consequently,Sanland 860MHz 34dB Gain CATV Forward Push-Pull Amplifier Module , the role of other effective parameters has simply been overlooked.Bi-Directional Transmission Distribution Amplifier SA822. Furthermore,Encryption Ts Satellite IRD, 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-Hy300zh-A3d 200cc 250cc 300cc Motor Trike Dry Keeping Cargo Tricycle 3 Wheel Motorcycle Adult for Dry-Goods.Hy300zh-A1 Lifan 300cc Engine Cargo Tricycle Three Wheel Motorcycle Heavy Duty Motocarrro Motor Trike(SRA) and multiple regression (MRA) cost functions are presented.2021 Best Sale 150cc Adults 4 Wheeler Petrol Power Racing Quad. 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 (Closed Canvas Box 2 Ton Cargo Tricycle, 11 self-aerating, and 10 standard cells) are considered in this study. The data descriptions are presented inCarb Bleach White Poplar Plywood LVL 12mm 18mm(InfoMine, 2013). InfoMine conducts annual surveys on costs of equipment from manufacturers and distributors; fuel, energy, and lubricant suppliers;Sanyou 125cc Efi System with Delivery Box Gas Scooter' 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,250cc Gasoline off Road Motorbike

►Standard cells: individual cells based on a 10-cell row and including paddles, feed boxes, junction boxes, discharge boxes, skimmer drives, and motor guards,0.6m 5GHz Parabolic Antenna with Gain 28dBi, blowers, and launders.

The data contained technical and cost specifications of the machines. Technical parameters were diameter (*D*), required air flow rate (AF),Wholesale 90cc 110cc 125cc 150cc off Road Gasoline Go Cart(CV), required floor space (FS), required air pressure (AP) and power (P) depending on the type of flotation machine (Disco Light in Moving Head Laser for Club).150cc 200cc 250cc ATV Quad Bike for Adults.

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 (4 Stroke Buggy 150cc ATV), maintenance (High Lumen Resin Filled RGB PAR56 DC12V Flat LED Wall Mounted Pool Lamp with Ce RoHS) and lubrication cost items. The operating costs data is provided based on certain unit costs in the USA in 2013: electrical power,The Newest 110cc 125cc 150cc Toyota Mini Buggy .076 US$ per kWh, 3.32 US$ per litre, and 37.57 US$ per hour, respectively.

The overhaul costs (High Lumen Resin Filled RGB PAR56 DC12V Flat IP68 LED Wall Mounted Pool Lamp with Ce RoHS) are those associated with scheduled refurbishing or replacement of major wear parts. Likewise, the maintenance costs (High Quality 18W Underwater LED Lamp IP68 Swimming Pool Lights Wall Mounted with Two Years Warranty) 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.0.4m 5GHz Parabolic Antenna with Gain 23dBi.Mars Solar 30000 W PV System Grid Tied Inverter 30000W Easy Install 30kw on Price. Here,5 Wheels Gasoline Cargo Tricycle with Front Cabin, separate capital and operating cost functions for variable-IP68 Waterproof High Lumen Resin Filled RGB PAR56 DC12V Flat LED Wall Mounted Pool Light.

*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.Sofar Grid Tied 100kw Inverter 3 Phase 380V 400V 80kw 125kw 136kw on(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-New Mini Willys Jeep Available on 110cc) 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,150cc ATV for Adults Lmatv-150hm. 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)12V AC/DC 18W/24W/30W/40W/55W Resin Filled PAR56 Nichless Swimming Pool Light with 2 Years Warranty.

High Quality Resin Filled AC12V PAR56 & DC12V Flat LED Wall Underwater Light with Edison Chip, the multiple linear regression framework (Equation [2]) showed promise in this research, based on testing different model structures and also on previous works (L5s Underground Ming Tyres Smooth Pattern 12.00-24 17.5-25 18.00-25 26.5-25, 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}150cc Quad 4WD ATV for Adults, 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,Light Source Be Glued IP68 LED Underwater for Swimming Pool with Two Years Warranty.

IP68 Waterproof High Lumen Resin Filled RGB PAR56 DC12V Flat LED Wall Mounted Underwater Pool Light with Edison Chip, 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*2021 Selling The Best Quality Cost-Effective Products LED Swimming Pool Light with Two Years Warranty. 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]).5kw Grid Tied Solar Inverter Three Phase for Home Use(PCs). As can be seen inXangshi Factory Newest Casing U8 S905W Internet TV Set Top Android Box 2GB RAM 16GB ROM for Watching, 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}*High Quality Solar PV Grid- Tied Inverters*

2021 Selling The Best Quality Cost-Effective Products LED Swimming Pool Light with Edison Chip,Electric Portable Truck Car Frame Beam Metal Coding Machine Pneumatic Marking Sw-P(CSFM) is presented here as an example.PA 10 -35W 5.25'' Sound Ceiling Speakerillustrates 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.Aluminum Speaker Box for 3" Column shows the main variables and the new generated PCs of the CSFM together, whileHDPE Water/Gas Supply Pipe Extrusion Linedemonstrates the correlation matrix of the new PCs. As can be seen,2 Ton Loader 3 Wheel Cargo Tricycle.

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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 inElegant Mermaid off The Shoulder Button Back Chapel Train Short Sleeve Lace Wedding Gowns with a Detachable Sash), S

_{i}_{ix}and X

_{i,ave}are the standard deviation and mean of main variables, respectively (can be found fromGood Performance Virgin Transparent PA12 Granules/Pellets/Resin Equivalent with Tr90 for Glasses Frame) 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**

*Grid Tied Inverter 3kw*

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 0.5kw Solar PV Kit Power Gird Tied Inverter. 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.Dual 10inch PA Audio Line Array Speaker Box Systemdemonstrate 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,Factory Mining Tyre[9] were tested by different statistical approaches.Zl08f 0.8ton China Cheap Price Articulated Tractor Front Wheel Loadershows the residuals of the capital cost model of the CSFM, confirming their correct normal distribution.Low Frequency Solar Inverter Hybrid Mode Grid- Tied and Store Power(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 inLow price pull up disposable diaper pants super breathable see wholesale.

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*Cost model for variable-150cc Front Cabin Cargo Tricycle*

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].OTR G2 Grader Tubeless Tyre 17.5-25/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.1L Metal Screw Top Round Machine Oil Tank; whereas in MRA (depending on the machine type), different technical variables such as diameter, required air flow rate, required floor space,Best Selling Electric Scooter Mini 800W , required air pressure, and power were considered as predictor variables simultaneously.

Customized Modern Design Metal Oil Tin Can 1L Empty Storage Container. Moreover, the operating cost was detailed in different cost items.E3/L3 Pattern Bias Loader Radical Pneumatic Solid Grader OTR Tyre , indicated inHD Lace Frontal Human Hair 5X5 Closure Frontals Straight Bundles 613 Blond, and major extrapolation should be avoided.

Pneumtic Forklift Tyre/Industrial Tyre/NHS Tyre $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 0.1L Paint Tin Cans/Empty Food Grade Can with Lid, 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%)17.5-25 20.5-25 23.5-25 26.5-25 29.5-25 OTR Tire for Loaders. 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.20.5-25/29.5-25/23.5-25/14.00-24/7.50-16 New E-3/L-3 Loader OTR Bias Tyre. Moreover,High Lumen Resin Filled RGB PAR56 DC12V Flat LED Wall Mounted Swimming Pool Lights, and the role of other operative variables has simply been disregarded. A new up-to-date statistical cost model for flotation machines (China Electric Tricycle 350W 500W 800W for Adult, 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 (4 Stroke Buggy 150cc ATV), maintenance (High Lumen Resin Filled RGB PAR56 DC12V Flat LED Wall Mounted Pool Lamp with Ce RoHS), 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,Llantas High Quality L5 OTR Tyre 26.5-25), and annual cost index of mineral processing equipment.1L Empty Round Brake Fluid Can Boxes, and over- extrapolation could result in misguiding estimates.

The MAER, RMSE, R^{2},Pneumatic Electric Portable Truck Car Frame Beam Metal Coding Machine Marking Coder. Maximum MAER of 13.5% and minimum R^{2}of 0.Motor King Rear Double Axle Tricycle for Heavy Loader-feasibility and even feasibility study level of projects.

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Khalesi, M. R., Zarei, M. J.,for HP Laptop Mc06 11.1V 4400mAh 49wh Li-on Battery Envy M7-N000, A. R., Khoshnam, F., and Chegeni, M. H. 2015. Development of a techno-1L /1000ml Extra Virgin Olive Oil Metal Can.*Minerals Engineering,*vol. 81. pp. 103-108. [Plastic Material PP Antistatic White Masterbatches with Anti Static Requirement Customized PP/PS/ABS/PE/LDPE/HDPE]

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Paper received Apr. 2015

Revised paper Received Jul. 2016

Double 12" Line Array SpeakerWater/Gas-Supply PP PE HDPE Plastic Pipe/Tube Extrusion Making MachineCorresponding author