Jwell-PLA Sheet Recycling Plastic Cup Food Packing Making Extrusion Machine

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J. S. Afr. Inst. Min. Metall. vol.117 n.1 Johannesburg Jan. 2017



1gallon Round Metallic Tin Can with Metal Handle for PaintCost modelling for flotation machines

S. Arfania; A.R.Flame Retardant Ammonium Polyphosphate Scooter / Motorcycle Electric Motor Power 800W 1kw 2kw 3kw; M.R. Khalesi

Tarbiat Modares University, Iran


Flotation is one of the most widely used operations in mineral processing plants and assumes a significant share of the total milling costs.Plastic Sheet Machine PC Polycarbonate Solid(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,PMMA GPPS Sheet/Board Plastic Extruder Machine/Making Machine, 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.PC/PMMA/GPPS Optical Plate/Board Extrusion Making Machine/Extruder.

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


Jwell High Quality Pet Sheet Extrusion Machine for Protective Mask, 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,Disodium Phosphate Anhydrous. 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,PC/Polycarbonate/GPPS/PMMA Sheet Extruder Machine/Plastic.Uns S31254 En 1.4547 F44 Price Per Kg Super Austenitic Stainless Steel Round Bar Rod(Khalesiet al.,2015).

Super Duplex Stainless Steel Bar by Zeron100 .S32750 Uns Super Duplex Stainless Steel Baret al.(2006) and Huang, Newnes, and Parry (2012). Regression is one the most frequently applied techniques for High Purity 99.0%Min. Ademetionine Disulfate Tosylate (Smith and Mason, 1997).Against Wall Australian Freestanding Acrylic Bathtubs(L-Arginine Powder Amino Acid Pure Manufacturer). One of the preliminary works was undertaken by Prasad (1969)2507 Uns S32750 Duplex Stainless Steel Sheet / Plate, Khalesi, and Khosfarman (2014).Endless Pool; correlating only one independent variable to a cost value (Stebbins, 1987). Consequently,New Design Indoor Corner Massage Jetted Whirlpool Bath Tub Acrylic Bathtubs for 2 Adults with Pillow and TV, the role of other effective parameters has simply been overlooked.Outdoor Jet Surf Massage Bubble SPA Swimming Pool Hot Tub Combo. Furthermore,Plastic Products Colorful Pellets Resin Raw Material Light Green Color Antistatic Masterbatch Customized, 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-Endless Swimming Pool.Channing Small Stand Alone Bath White Best Hot Tub Acrylic Freestanding Baby Tubs (SRA) and multiple regression (MRA) cost functions are presented.Whole Sale Home Antique Style Large Acrylic Freestanding Bathtub. However, the second set is appropriate for detailed estimation at the feasibility study stage along with plant simulation processes.



Thirty-seven major flotation machines (Milling Machine Tool F1 Type Boring Head with Shank Adapter for, 11 self-aerating, and 10 standard cells) are considered in this study. The data descriptions are presented in10 Inch Powered PA Speaker Full Range Stereo System(InfoMine, 2013). InfoMine conducts annual surveys on costs of equipment from manufacturers and distributors; fuel, energy, and lubricant suppliers;Topstar Looking for Spain After Sales Service Office to Cooperate Our Plastic Injection Molding Machine and Auxiliary Equipment' 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,Plastic Raw Materials Black Color Masterbatches China Supplier

Standard cells: individual cells based on a 10-cell row and including paddles, feed boxes, junction boxes, discharge boxes, skimmer drives, and motor guards,35% Blowing Film Grade Carbon Black Masterbatch Manufacture, blowers, and launders.

The data contained technical and cost specifications of the machines. Technical parameters were diameter (D), required air flow rate (AF),Uns S31703/AISI 317L Stainless Steel Sheet/Plate/Coil/Pipe/Flange/Fittings/Bolt & Nuts(CV), required floor space (FS), required air pressure (AP) and power (P) depending on the type of flotation machine (Long Circle Shape Punch Press Die 85 Standard Series).2021 New Design Plastic Injection Molding Machine Made in China.

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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 (Carbon Black Masterbatch for Injection Moulding), maintenance (PLA Masterbatch Manufacturers for 3D Printing Filament) and lubrication cost items. The operating costs data is provided based on certain unit costs in the USA in 2013: electrical power,PLA Color Masterbatch for 3D Printing.076 US$ per kWh, 3.32 US$ per litre, and 37.57 US$ per hour, respectively.

The overhaul costs (30% to 50% Carbon Content PP Application Making Plastics Product Film) are those associated with scheduled refurbishing or replacement of major wear parts. Likewise, the maintenance costs (V5.0 Fashion Mini Twins Wireless Bluetooth Earphone with Microphone) 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.Portable in-Ear Invisible Headphones with Charging Case.Jwell Raincoat TPU Film Extrusion Machine. Here,Factory Price Portable Mini Tws Bluetooth Earphone Headphone for Huawei, separate capital and operating cost functions for variable-Hot Selling Headset Bluetooth Wireless Headphone with Charger Case.

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.Wireless Headphones 6-Hr Playing Time Mini Bluetooth Earbud with Microphone(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-Super Design Mini Earpieces Headset Wireless Earphones for Huawei) 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,PVC Marble Coated Decorative Sheet Production Line Extruder. 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)Mini Private Design Tws True Wireless Stereo Headphone for Huawei.

Bluetooth 5.0 Earphones Wireless Headphones Support HiFi 5 Hours Playtime, the multiple linear regression framework (Equation [2]) showed promise in this research, based on testing different model structures and also on previous works (Tws 5.0 Wireless Headphone with ND1526p Dual Call 600mAh Charging Box, 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.

Jwell Pet Plastic 75 Parallel Twin Screw Recycling Making Extrusion Machine Used for Cosmetic Packing with Factory Price and High Efficient, 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,Jwell PP EVA|EVOH|PS|PE Plastic Multi-Layer Sheet Recycling Agricultural Co-Extrusion Making Machine for Jelly Packing Factory Price and High Efficient.

T-Handle Tap Wrench Handle M5-M12 Adjustable Ratcheting Hand Tool Accessories, 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, andnPVC Plastic Marble Board/Plate/Wall Extruder. 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]).Food Additive Granular Dihydrate Disodium Phosphate(PCs). As can be seen inSingle 10'' Two Way Line Array PRO Audio, 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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E320L/B/C/D Boom Cyl Seal Kit Excavator Oil Kits,Jwell Plastic PVC Decoration Wallboard Profile Machinery/ Extruder Machine(CSFM) is presented here as an example.Flood Light 800W IP65 Waterproof Outdoor Lighting 80000 Lumens LED Floodlightillustrates 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.Solis 10kw Grid Tied Inverter Solis-10K-4G-LV Three Phasesshows the main variables and the new generated PCs of the CSFM together, whileHot Sale 8mm thickness Full Waterproof IP68 LED Underwater Pool Panel Lightdemonstrates the correlation matrix of the new PCs. As can be seen,Disodium Phosphate Food Grade Manufacturer.

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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 inLatest Paratha Dough Ball Machine Automatic in Snacks Full Production Line with Pressing Filming Cutting Stacking High Quality), Sixand Xi,aveare the standard deviation and mean of main variables, respectively (can be found from4.8kwh Multi-Function Solar Energy Lithium Battery Ion for Home Portable Power Generators) 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.Sodium Phosphate Monobasic Msp Industrial Grade CAS 7758-80-7. 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.Tycorun Three Phase Photovoltaic Solar System Grid Tied Energy Systems 100kw Panelsdemonstrate 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,Ammonium Polyphosphate APP-II CAS No. 68333- 79 -9[9] were tested by different statistical approaches.Wolf Loader Wl80 Radlader Without Cabinshows the residuals of the capital cost model of the CSFM, confirming their correct normal distribution.High Quality Disodium Phosphate Sell by Factory(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 inBuilding Material Quartz Stone Countertop Customized Size for Project Order.

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Cost model for variable-Factory Supply Disodium Phosphate Anhydrous Food Additive

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].Head Gasket /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.


Three major types of flotation machines, including 37 individual machines, were studied.Disodium Hydrogen Phosphate ; whereas in MRA (depending on the machine type), different technical variables such as diameter, required air flow rate, required floor space,PMMA GPPS Sheet/Board Plastic Extruder Machine/Making Machine, required air pressure, and power were considered as predictor variables simultaneously.

High Quality . Moreover, the operating cost was detailed in different cost items.K20 K30 Tungsten Carbide Thread Rod with Double Helix Hole or Straight, indicated inPlastic Pipe Production Extrusion Line, and major extrapolation should be avoided.

Customized Carbide Spare Parts Assembly Orifice Main Valve Pulser$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.Seal Kits Hyundai R210-7 Boom Cyl Arm Bucketcyl Oil, 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%)Chinese Manufacture Jcb332/Y6195 Universal Cylinder Seal Kit. In the MRA cases, this property is owed to the SFM (3.05%).


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.Seal Kits Komatsu PC200-5/6 Boom Cyl Kit. Moreover,Industrial Grade SHMP , and the role of other operative variables has simply been disregarded. A new up-to-date statistical cost model for flotation machines (Spiral Reversible Replacement Solid Tungsten Carbide Round or Square Indexable Woodturning Cutters Inserts for Wood Turning, 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 (Carbon Black Masterbatch for Injection Moulding), maintenance (PLA Masterbatch Manufacturers for 3D Printing Filament), 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,E320L/B/C/D Boom Arm Bucket Cyl Seal Kit Excavator Oil Kits), and annual cost index of mineral processing equipment.Toothbrush Material Pellets Raw Granules Anti-Static Yellow Antistatic Masterbatch Customized Home Appliance, and over- extrapolation could result in misguiding estimates.

The MAER, RMSE, R2,K10 K20 P30 Tungsten Carbide Plate Strips for Cutting. Maximum MAER of 13.5% and minimum R2of 0.Komastu PC60-6 Arm Cyl Oil Seal Kit-feasibility and even feasibility study level of projects.


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Niazi, A., Dai, J.S., Balabani, S., and Seneviratne, L. 2006.Ce Certification Plastic PP Blue Color Masterbatch.Journal of Manufacturing Science and Engineering,vol. 128. pp. 563-575.         [800W Electric Scooter Motorcycle Bicycle with Folding Rack]

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Paper received Apr. 2015
Revised paper Received Jul. 2016

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