scholarly journals Modelling Methods of Magnetohydrodynamic Phenomena Occurring in a Channel of the Device Used to Wash Out the Spent Automotive Catalyst by a Liquid Metal

2016 ◽  
Vol 61 (2) ◽  
pp. 713-718
Author(s):  
A. Fornalczyk ◽  
R. Przylucki ◽  
S. Golak ◽  
J. Willner
Keyword(s):  
Liquid Metal ◽  
Automotive Industry ◽  
Precious Metals ◽  
Coupled Analysis ◽  
Computational Techniques ◽  
Advantages And Disadvantages ◽  
Spent Catalysts ◽  
Physical Fields ◽  
Modelling Methods ◽  
Temperature And Flow Fields

AbstractThe recovery of precious metals is necessary for environmental and economic reasons. Spent catalysts from automotive industry containing precious metals are very attractive recyclable material as the devices have to be periodically renovated and eventually replaced. This paper presents the method of removing platinum from the spent catalytic converters applying lead as a collector metal in a device used to wash out by using mangetohydrodynamic stirrer. The article includes the description of the methods used for modeling of magnetohydrodynamic phenomena (coupled analysis of the electromagnetic, temperature and flow fields) occurring in this particular device. The paper describes the general phenomena and ways of coupling the various physical fields for this type of calculation. The basic computational techniques with a discussion of their advantages and disadvantages are presented.

Modelling Methods of Magnetohydrodynamic Phenomena Occurring in a Channel of the Device Used to Wash out Spent Automotive Catalyst on Metallic Substrate by a Liquid Metal

2016 ◽  
Vol 879 ◽  
pp. 566-571
Author(s):  
Agnieszka Fornalczyk ◽  
Roman Przylucki ◽  
Sławomir Golak ◽  
Mariola Saternus
Keyword(s):  
World Literature ◽  
Precious Metals ◽  
Coupled Analysis ◽  
Computational Techniques ◽  
Catalytic Converters ◽  
Advantages And Disadvantages ◽  
Spent Catalysts ◽  
Physical Fields ◽  
Modelling Methods ◽  
Temperature And Flow Fields

The recovery of precious metals is necessary for environmental and economic reasons. Spent catalysts from automotive industry containing precious metals are very attractive recyclable material because as the devices. they have to be periodically renovated and eventually replaced. Among automotive catalysts withdrawn from use, these with metallic carrier constitute quite a big group. Metallic carriers are usually obtained from steel FeCrAl , which is covered by a layer of PGM acting as a catalyst. World literature describes a number of pyro-or hydrometallurgical methods used for recovery of platinum from used automobile catalytic converters. However, all methods, available in the literature, are used to recover platinum from ceramic carrier. This paper presents the new method of removing platinum from the spent catalytic converters applying lead as a collector metal in a device used to wash out platinum by using mangetohydrodynamic pump. The article includes the description of the methods used in modelling magnetohydrodynamic phenomena (coupled analysis of the electromagnetic, temperature and flow fields) occurring in this particular device for this kind of waste. The general phenomena and ways of coupling the various physical fields for this type of calculation have also been described. The basic computational techniques with a discussion of their advantages and disadvantages have been presented.

scholarly journals A Study of the Impact of Power Supply Parameters on Metal Flow Velocity in the Channel of a Device for Washing out Precious Metals from of the Automotive Catalytic Converters

2014 ◽  
Vol 59 (2) ◽  
pp. 779-783
Author(s):  
A. Fornalczyk ◽  
S. Golak ◽  
R. Przyłucki ◽  
J. Willner
Keyword(s):  
Electromagnetic Field ◽  
Liquid Metal ◽  
Power Supply ◽  
Metal Flow ◽  
Precious Metals ◽  
Coupled Analysis ◽  
Steel Scrap ◽  
Catalytic Converters ◽  
Effective Velocity ◽  
The Impact

Abstract The lifetime of a catalytic converters is limited. Today’s environmental regulations require that used converters should be properly recycled as a valuable source of precious metals, Al2O3 and steel scrap. The precious metals used in the devices perform catalytic functions. They are suspended in a ceramic or metal carrier. This paper deals with the recovery of precious metals from automotive converters using a metal-collector method. In order to speed up the washout of the precious metals from the capillary structure of the converter, the movement of the liquid metal-collector was forced by the electromagnetic field. The research was aimed at improving the effective velocity of the liquid metal flow through the carrier by means of a device with a double windings. Various ways of power supply were considered. The calculation experiment was performed as a weakly coupled analysis of the electromagnetic field and flow field.

Metodología para el desarrollo de trayectorias en la aplicación por el proceso de soldadura GMAW en un robot industrial

2019 ◽  
pp. 1-4
Author(s):  
Josué Rafael Sánchez-Lerma ◽  
Luis Armando Torres-Rico ◽  
Héctor Huerta-Gámez ◽  
Ismael Ruiz-López
Keyword(s):  
Mechanical Properties ◽  
Automotive Industry ◽  
Industrial Robot ◽  
Welding Process ◽  
High Strength ◽  
Test Material ◽  
Advantages And Disadvantages ◽  
Application Characteristics ◽  
Joining Process ◽  
Gmaw Welding

This paper proposes the development of the methodology to be carried out for the metal joining process through the GMAW welding process in the Fanuc LR Mate 200iD industrial robot. The parameters or properties were considered for the application to be as efficient as possible, such parameters as speed of application, characteristics of the filler material, gas to be used as welding protection. The GMAW welding process can be applied semiautomatically using a hand gun, in which the electrode is fed by a coil, or an automatic form that includes automated equipment or robots. The advantages and disadvantages of the GMAW welding process applied in a manual and automated way were commented. The mechanical properties of the materials to which said welding can be applied were investigated; The materials with which this type of welding can be worked are the high strength materials, which are used in the automotive industry, for the forming of sheet metal. To know the properties of the material, destructive tests were carried out on the test material to be used, as well as the mechanical properties of the welding.

Zerspanprozesse effizienter machen*/Making machining process more efficent - Recording and analysis of non-productive times in the automotive industry

2015 ◽  
Vol 105 (05) ◽  
pp. 301-306
Author(s):  
T. Bosch ◽  
W. Polley ◽  
S. Schöll ◽  
P. Klemm
Keyword(s):  
Automotive Industry ◽  
Mass Production ◽  
Machining Process ◽  
Sich Eine ◽  
Analysis Method ◽  
Negative Effects ◽  
Advantages And Disadvantages ◽  
Production Processes

Dieser Fachartikel geht auf die negativen Auswirkungen technischer Nebenzeiten für die Effizienz von Produktionsprozessen in der automobilen Großserienproduktion ein. Er zeigt in der Übersicht, welche Methoden sich zur Erfassung technischer Nebenzeiten eignen und welche Vor- und Nachteile sie besitzen. Nur mit diesen Erfassungsmethoden lässt sich eine effektive Minimierung von technischen Nebenzeiten erreichen. Anschließend wird ein dreistufiges Analyseverfahren präsentiert.   This article discusses the negative effects of non-productive times on the efficiency of production processes in automotive mass production. An overview shows which methods are suitable for the recording of non-productive times and their advantages and disadvantages. These recording methods are essential for the effective minimization of non-productive times. Subsequently, an analysis method, which is composed of three steps, is presented.

Overview on the Liquid Metal Battery for Grid-Level Large-Scale Energy Storage

2016 ◽  
Vol 723 ◽  
pp. 572-578
Author(s):  
Li Fu ◽  
Qi Chi Le ◽  
Xi Bo Wang ◽  
Xuan Liu ◽  
Wei Tao Jia
Keyword(s):  
Energy Storage ◽  
Liquid Metal ◽  
Large Scale ◽  
Low Cost ◽  
Advantages And Disadvantages ◽  
Comprehensive Comparison ◽  
Development And Utilization ◽  
Working Principle ◽  
Liquid Metal Battery ◽  
Grid Level

In recent years, the development and utilization of renewable generation have attracted more and more attention, and the grid puts forward higher requirements to the energy storage technology, especially for security, stability and reliability. The liquid metal battery (LMB) consists of two liquid metal electrodes and a molten salt electrolyte, which will be segregated into three liquid layers naturally. Being low-cost and long-life, it is regarded as the best choice for grid-level large-scale energy storage. This paper describes the main structure and working principle of the LMB, analyzes the advantages and disadvantages of the LMB when compared with the traditional batteries, and explores the feasibility and economy when it is used as a kind of large-scale energy storage applied in the power grid. The paper also makes a comprehensive comparison on the performance of several LMBs, and points out the LMB’s research and development in the future.

Scoring Modeling in Estimating the Financial Condition of Russian Agro-Industrial Companies

2019 ◽  
pp. 151-175
Author(s):  
Oleg Y. Patlasov ◽  
Olga K. Mzhelskaya
Keyword(s):  
Dynamic Modelling ◽  
Financial Indicators ◽  
Advantages And Disadvantages ◽  
Financial Condition ◽  
Industrial Companies ◽  
Express Analysis ◽  
Regional Specificity ◽  
Methodological Problems ◽  
Discriminant Models ◽  
Modelling Methods

The chapter presents the authors' estimations according to the scoring modeling techniques; also, internationally spread models of bankruptcy forecasting are systematized. Advantages and disadvantages of dynamic modelling methods as applied to financial condition assessment are presented here. Methodological problems of financial modelling are explained here in detail. Regression, logit-regression, and discriminant models are built on the basis of data on the Rosselkhozbank and Sberbank of Russia regulations, taking into account the agrarian specifics of organizations and regional specificity of the Omsk region. An attempt has been made to balance the simplicity of calculations and the accuracy of predictions. Graphs, to be used for express analysis, are constructed on the basis of two core financial indicators.

scholarly journals Measurement System Analyses – Gauge Repeatability and Reproducibility Methods

2018 ◽  
Vol 18 (1) ◽  
pp. 20-27 ◽  
Author(s):  
Lenka Cepova ◽  
Andrea Kovacikova ◽  
Robert Cep ◽  
Pavel Klaput ◽  
Ondrej Mizera
Keyword(s):  
Measurement System ◽  
Automotive Industry ◽  
Manufacturing Industry ◽  
System Analysis ◽  
Advantages And Disadvantages ◽  
Measurement System Analysis ◽  
System Analysis Approach ◽  
Repeatability And Reproducibility ◽  
Plastic Parts ◽  
Part Variation

Abstract The submitted article focuses on a detailed explanation of the average and range method (Automotive Industry Action Group, Measurement System Analysis approach) and of the honest Gauge Repeatability and Reproducibility method (Evaluating the Measurement Process approach). The measured data (thickness of plastic parts) were evaluated by both methods and their results were compared on the basis of numerical evaluation. Both methods were additionally compared and their advantages and disadvantages were discussed. One difference between both methods is the calculation of variation components. The AIAG method calculates the variation components based on standard deviation (then a sum of variation components does not give 100 %) and the honest GRR study calculates the variation components based on variance, where the sum of all variation components (part to part variation, EV & AV) gives the total variation of 100 %. Acceptance of both methods among the professional society, future use, and acceptance by manufacturing industry were also discussed. Nowadays, the AIAG is the leading method in the industry.

scholarly journals Model of Infiltration of Spent Automotive Catalysts by Molten Metal in Process of Platinum Metals Recovery

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Agnieszka Fornalczyk ◽  
Slawomir Golak ◽  
Mariola Saternus
Keyword(s):  
Electromagnetic Field ◽  
Molten Metal ◽  
Metal Flow ◽  
Precious Metals ◽  
Automotive Catalysts ◽  
Catalyst Carrier ◽  
Metals Recovery ◽  
Spent Catalysts ◽  
Hydrodynamic Field ◽  
The Impact

This paper presents the model for the washing-out process of precious metals from spent catalysts by the use of molten lead in which the metal flow is caused by the rotating electromagnetic field and the Lorentz force. The model includes the coupling of the electromagnetic field with the hydrodynamic field, the flow of metal through anisotropic and porous structure of the catalyst, and the movement of the phase boundary (air-metal) during infiltration of the catalyst carrier by the molten metal. The developed model enabled analysis of the impact of spacing between the catalysts and the supply current on the degree of catalyst infiltration by the molten metal. The results of calculations carried out on the basis of the model were verified experimentally.

The Comparison of Three Recycling Processes of Copper Chromite Spent Catalysts

2012 ◽  
Vol 599 ◽  
pp. 566-569
Author(s):  
Zeng Xin Li ◽  
Guo Ming Wang ◽  
Qiang Liang
Keyword(s):  
Solid Waste ◽  
Cupric Oxide ◽  
Copper Chromite ◽  
Ammonia Solution ◽  
Sodium Chromate ◽  
Organic Species ◽  
Advantages And Disadvantages ◽  
Cupric Nitrate ◽  
Spent Catalysts ◽  
Soda Ash

Three technologies of recycling copper chromite spent catalysts from furfuryl production by furfural hydrogenization were developed. After the organic species was removed from the solid waste by vacuum pressure distillation at 130°C, the resultant solid waste catalyst was mixed with soda ash, followed by roasting, leaching and removing silicon in a reverberating furnace to obtain sodium chromate. Dissolving the cupric oxide in soda ash solution to remove chrome and then dissolving it in nitric acid, cupric nitrate can be obtained. A certain proportion of such sodium chromate and cupric nitrate were mixed and treated by ammonia solution to give precipitate, which was roasted and granulated to get new catalyst used in furfuryl production. Three processes features and their respective advantages and disadvantages were discussed.

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