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Use of Chlorine to Remove Magnesium from Molten Aluminum

Vieira, Estefano Aparecido; de Oliveira, Jose Roberto; Alves, Gianni Ferreira; Espinosa, Denise Crocce Romano; Tenorio, Jorge Alberto Soares
Fonte: JAPAN INST METALS; SENDAI Publicador: JAPAN INST METALS; SENDAI
Tipo: Artigo de Revista Científica
ENG
Relevância na Pesquisa
46.29%
Removal of Mg from aluminum scraps, known as demagging, has been widely applied in the,aluminum industry. This work discusses bubble-formation theories and magnesium kinetic removal from aluminum scraps using chlorine and inert gas fluxing. The interfacial area of the bubbles and residence time were estimated using a mathematical model. To inject gaseous chlorine, three types of nozzles were used with varying internal diameter. In addition, a porous plug, as well as varying input chlorine flow and concentration were used. The use of lower chlorine concentration improves efficiency because the interfacial tension is reduced therefore, more and smaller bubbles are formed. The model proposed herein is consistent with the experimental data. [doi:10.2320/matertrans.M2011256]

Evolução da microestrutura e da textura durante o processamento de chapas da liga Al-Mn-Fe-Si (3003) produzidas por lingotamento contínuo: um estudo comparativo com o processo semi-contínuo. ; Microstructure and texture evolution of the Al-Mn-Fe-Si (3003) aluminum alloy produced from continuous casting process: comparative analysis with semi-continuous casting process.

Martins, Juliana de Paula
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 25/05/2005 PT
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A principal motivação para o desenvolvimento do presente projeto de doutorado foi comparar as microestruturas e texturas resultantes da liga de alumínio 3003 obtida por lingotamento contínuo e semicontínuo. O processo “roll caster” (lingotamento contínuo em cilindros) tem sido crescentemente utilizado na indústria de laminação de alumínio. Produtos que antes sofriam altos graus de deformação durante seu processamento são hoje obtidos nas dimensões próximas da espessura final. Com o intuito de entender este processo relativamente novo, as microestruturas e as texturas (macrotextura e microtextura), ao longo da espessura, das chapas produzidas por lingotamento contínuo e por lingotamento semicontínuo (placas fundidas com 250 mm de espessura, seguido de homogeneização e laminação a quente) foram analisadas. Foi possível constatar que os materiais provenientes dos dois processos diferem bastante e que ao longo da espessura também há grandes diferenças. Foi possível observar que durante o processamento “roll caster” há considerável deformação plástica, com a formação de células de discordâncias e subgrãos. Foi possível observar, também, que a microestrutura, a morfologia e o tamanho de grão, da amostra “caster” bruta de fundição são mais homogêneos que na amostra laminada a quente. As duas chapas...

Remoção de solidos em suspensão de efluente da industria de papel por eletroflotação; Removal of suspension solids of a paper industry effluent by electroflotation

Leticia Henni Ferreira
Fonte: Biblioteca Digital da Unicamp Publicador: Biblioteca Digital da Unicamp
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 18/12/2006 PT
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Este trabalho teve como escopo a aplicação da eletroflotação no tratamento de efluentes de uma indústria de papel e a verificação de sua viabilidade técnica e econômica. Para isto, compararam-se eletrodos de alumínio e ferro, sendo este com densidade de corrente de 211 A/m2 e aquele com 169 A/m2 em um reator de 20 L e monitorou-se o comportamento dos parâmetros pH, condutividade, temperatura, turbidez, DQO, Sólidos Sedimentáveis e DBO. Para o eletrodo de alumínio testado, houve um aumento do valor do pH de 7,32 para 9,19, a condutividade diminuiu conforme esperado pelo diagrama de solubilidade de Al(OH)3 em função do pH, a temperatura aumentou de 23,6 para 31,5ºC em decorrência do efeito Joule, a turbidez reduziu 93%, a DQO 96%, os Sólidos Sedimentáveis 98% e a DBO 99%, além do efluente final não ter apresentado coloração residual. O eletrodo de ferro apresentou resultados satisfatórios mas não tão promissores quanto os do alumínio. Neste caso, também houve aumento do pH de 7,31 para 9,80, a condutividade diminuiu conforme os diagramas de solubilidade dos Fe(OH)2 e Fe(OH)3 em função do pH, a elevação da temperatura foi de 25,9 para 31,8ºC pelo mesmo motivo já citado, a turbidez reduziu 50%, a DQO 83%...

Corrosão e propriedades mecânicas de tração e fadiga da liga de alumínio 7050-T73651; Corrosion and mechanical properties tensile and fatigue of aluminum alloy 7050-T73651 in ethanol fuel

Edison Almeida Rodrigues
Fonte: Biblioteca Digital da Unicamp Publicador: Biblioteca Digital da Unicamp
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 19/04/2012 PT
Relevância na Pesquisa
36.26%
Existe uma tendência promissora para uso de ligas à base de alumínio na indústria automotiva considerando vantagens relacionadas às características deste tipo de material. Entretanto, é necessário estudos para obter dados que permitam verificar a suscetibilidade desse material ao processo de corrosão, ao interagir com os diversos tipos de combustíveis que hoje são utilizados. Este trabalho visou estudar a corrosão da liga de alumínio 7050-T73651 em etanol combustível, enfatizando possíveis influências da corrosão nas propriedades mecânicas tração e fadiga da liga e estabelecer alternativas metodológicas para futuros estudos desta natureza. Foram realizados ensaios de imersão a longo prazo de amostras sob tensão e não tensionadas, para avaliação de perda de massa, que também foram acompanhadas por microscopia eletrônica de varredura e concomitantemente, corpos de prova foram submetidos a ensaios de tração e fadiga após exposição ao meio corrosivo. Os resultados mostraram perda de massa significativa associada à ação corrosiva do meio e densidades de correntes de corrosão que sugerem uma cinética de corrosão diferenciada a partir de 2160 horas de imersão para as duas condições estabelecidas. Imagens obtidas por microscopia eletrônica de varredura (MEV) mostraram formação de pites já nas primeiras 240 horas de imersão...

Investigation of a cluster of pituitary adenomas in workers in the aluminum industry.

Cullen, M R; Checkoway, H; Alexander, B H
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
Publicado em /11/1996 EN
Relevância na Pesquisa
36.5%
OBJECTIVE: Four cases of pituitary adenoma among employees at a primary aluminum production factory were identified over a five year period by a community physician. The objective of this investigation was to determine whether there has been a comparable high incidence in other aluminum factories, and if particular jobs, departments, or activities in the industry are associated with higher rates of the disease. METHOD: Pituitary adenoma in employees at all United States factories of the company for the years 1989-94 was assessed by a search of a health data information bank and an insurance data base covering present and past employees of the corporation. The incidence in the aluminum workers was estimated and compared with the workers in the index plant. A nested case control study was conducted to compare employment histories of identified cases with those of age and sex matched controls selected from the health information data base. RESULTS: 25 cases, including the index cases, were identified which had been diagnosed during the period 1989-94. The resulting rate of 10.4/100,000 person-years was much lower than that at the index plant. Case-control analysis showed no coherent pattern of location, department, or job significantly associated with risk. In particular...

Development of a job-exposure matrix for exposure to total and fine particulate matter in the aluminum industry

Noth, Elizabeth M.; Dixon-Ernst, Christine; Liu, Sa; Cantley, Linda; Tessier-Sherman, Baylah; Eisen, Ellen A.; Cullen, Mark R.; Hammond, S. Katharine
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
EN
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46.2%
Increasing evidence indicates that exposure to particulate matter (PM) at environmental concentrations increases the risk of cardiovascular disease, particularly PM with an aerodynamic diameter of less than 2.5μm (PM2.5). Despite this, the health impacts of higher occupational exposures to PM2.5 have rarely been evaluated. In part, this research gap derives from the absence of information on PM2.5 exposures in the workplace. To address this gap, we have developed a job-exposure matrix (JEM) to estimate exposure to two size fractions of PM in the aluminum industry. Measurements of total PM (TPM) and PM2.5 were used to develop exposure metrics for an epidemiologic study.

Why Industry Propaganda and Political Interference Cannot Disguise the Inevitable Role Played by Human Exposure to Aluminum in Neurodegenerative Diseases, Including Alzheimer’s Disease

Exley, Christopher
Fonte: Frontiers Media S.A. Publicador: Frontiers Media S.A.
Tipo: Artigo de Revista Científica
Publicado em 27/10/2014 EN
Relevância na Pesquisa
36.47%
In the aluminum age, it is clearly unpalatable for aluminum, the globe’s most successful metal, to be implicated in human disease. It is unpalatable because for approximately 100 years human beings have reaped the rewards of the most abundant metal of the Earth’s crust without seriously considering the potential consequences for human health. The aluminum industry is a pillar of the developed and developing world and irrespective of the tyranny of human exposure to aluminum it cannot be challenged without significant consequences for businesses, economies, and governments. However, no matter how deep the dependency or unthinkable the withdrawal, science continues to document, if not too slowly, a burgeoning body burden of aluminum in human beings. Herein, I will make the case that it is inevitable both today and in the future that an individual’s exposure to aluminum is impacting upon their health and is already contributing to, if not causing, chronic diseases such as Alzheimer’s disease. This is the logical, if uncomfortable, consequence of living in the aluminum age.

Electricity demand in primary aluminum smelting

Mork, Knut Anton
Fonte: MIT Energy Laboratory Publicador: MIT Energy Laboratory
Tipo: Trabalho em Andamento Formato: 1698374 bytes; application/pdf
EN_US
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46.16%
The demand for electricity by primary aluminum smelters is estimated econometrically. Cross section data is used, including plant data for the U.S. and Norway and a national average for Japan. The data are sampled for two periods, one before and one after the 1973-74 energy price increase. The paper estimates the elasticity of substitution between electricity and an aggregate of all other inputs, assumed to exist. The estimated value of 0.1 is low, but significantly different from zero. Large price in- creases, such as the equalization of hydro and other power prices are found to result in substantial energy savings.

Investigação da usinabilidade das ligas de alumínio da série 6xxx; Investigation of the machinability of aluminum alloys of the 6XXX series

Gonçalves, Ricardo Augusto
Fonte: Universidade Federal de Uberlândia Publicador: Universidade Federal de Uberlândia
Tipo: Dissertação
POR
Relevância na Pesquisa
36.4%
Devido à grande utilização das ligas de alumínio e o enorme salto da sua participação no mercado, as empresas produtoras necessitam de mais conhecimento à cerca do comportamento destas ligas durante os processos de fabricação a fim de fornecer mais dados técnicos aos seus clientes. Dentro dos diversos processos de fabricação a usinagem aparece como um dos processos mais utilizados na indústria. Este trabalho tem como principal objetivo investigar a usinabilidade no torneamento cilíndrico externo de cinco ligas de alumínio-magnésio-silício da série 6XXX (6082, 6351, 6005A, 6063 e 6061) em termos das três componentes da força de usinagem, rugosidade, grau de recalque e forma do cavaco utilizando ferramenta de metal duro da classe N. Seguindo um planejamento estatístico foi verificado o efeito dos parâmetros de corte: velocidade de corte, avanço e profundidade de corte. Os resultados mostram que em geral, as forças de corte na usinagem da liga 6082 são maiores. Em termos de rugosidade, os melhores resultados foram obtidos com a liga 6063, que também apresenta maiores graus de recalque. Os cavacos formados na usinagem das ligas têm, geralmente, a forma helicoidal curto e arco solto. Este trabalho mostra diferenças na usinagem das cinco ligas gerando dados importantes aos fabricantes e à indústria que utiliza estas ligas de alumínio. ______________________________________________________________________________ ABSTRACT; Due the wide use of the aluminum alloys and their large participation in the market...

The Aluminum Industry in West and Central Africa : Lessons Learned and Prospects for the Future

Husband, Charles; McMahon, Gary; Veen, Peter van der
Fonte: World Bank, Washington, DC Publicador: World Bank, Washington, DC
EN_US
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66.64%
The purpose of this working paper is to evaluate the future of the aluminum industry in West and Central Africa, with a focus on aluminum smelting and its relationship with power generation and availability in the regions. The organization of this study is as follows. It continues with an overview of the global aluminum industry, including a description of the production process, current and projected supply and demand, and the most important cost considerations for companies investing in the industry. Chapter two provides a brief history and future prospects for the aluminum sector in West and Central Africa. Chapter three contains an analysis of the viability of the two most important existing smelters in the regions, Valco in Ghana and Alucam in Cameroon, as well as a briefer analysis of Alscon in Nigeria and the potential for other smelters in the regions. In chapter four, the recent experience of the three large aluminum smelters in southeast Africa is reviewed and lessons are extracted for West and Central Africa. Conclusions and recommendations are in chapter five.

Negotiating change : Pat Rousseau and the Bauxite Negotiations, 1974-7

Rousseau, Patrick H. O., 1934-
Fonte: Heinemann Educational Books (Caribbean); Heinemann Educational Books (Caribbean) Publicador: Heinemann Educational Books (Caribbean); Heinemann Educational Books (Caribbean)
Tipo: mixed material
Publicado em //1987
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36.27%
(Issuing Body) H.D. Carberry Collection of Caribbean Studies (University of Illinois at Chicago); Includes index.; (Internal Comments) Carberry Curator Notes: An account of the negotiations between the government of Jamaica and the bauxite industry.; (Internal Comments) Selected images from this book have been digitized as part of the University of Illinois Chicago’s Carberry Collection of Caribbean Studies, with the images and annotated notes on the editions serving as a resource for those studying bibliographic history and Caribbean Literature. In most cases, these works are restricted by copyright and so the full volumes are not digitized. Carberry Collection of Caribbean Literature (University of Illinois at Chicago)

Projeção de preços de alumínio: modelo ótimo por meio de combinação de previsões; Aluminum price forecasting: optimal forecast combination

Castro, João Bosco Barroso de
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 15/06/2015 PT
Relevância na Pesquisa
36.45%
Commodities primárias, tais como metais, petróleo e agricultura, constituem matérias-primas fundamentais para a economia mundial. Dentre os metais, destaca-se o alumínio, usado em uma ampla gama de indústrias, e que detém o maior volume de contratos na London Metal Exchange (LME). Como o preço não está diretamente relacionado aos custos de produção, em momentos de volatilidade ou choques econômicos, o impacto financeiro na indústria global de alumínio é significativo. Previsão de preços do alumínio é fundamental, portanto, para definição de política industrial, bem como para produtores e consumidores. Este trabalho propõe um modelo ótimo de previsões para preços de alumínio, por meio de combinações de previsões e de seleção de modelos através do Model Confidence Set (MCS), capaz de aumentar o poder preditivo em relação a métodos tradicionais. A abordagem adotada preenche uma lacuna na literatura para previsão de preços de alumínio. Foram ajustados 5 modelos individuais: AR(1), como benchmarking, ARIMA, dois modelos ARIMAX e um modelo estrutural, utilizando a base de dados mensais de janeiro de 1999 a setembro de 2014. Para cada modelo individual, foram geradas 142 previsões fora da amostra, 12 meses à frente...

Valuing flexibility in electro-intensive industries: the case of an aluminum smelter

Bastian-Pinto,Carlos de Lamare; Brandão,Luiz Eduardo Teixeira; Ozório,Luiz de Magalhães
Fonte: Associação Brasileira de Engenharia de Produção Publicador: Associação Brasileira de Engenharia de Produção
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2015 EN
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46.16%
AbstractElectro-intensive industries account for a significant proportion of the total industrial electricity consumption, and these industries usually possess co-generation assets, which can supply at least part of their energy needs. However, due to price uncertainty, it may be optimal for the firm to temporarily suspend production and sell the available energy. If this strategy creates value, governments can create incentives through price signals for these firms to take their plants offline and increase the supply of electricity during times of shortage. This study analyzes the case of an aluminum plant that has the choice of temporarily suspending operations and models its managerial flexibility as a bundle of European switch options. The suspension and modeling would occur under two simultaneous situations, uncertainty and asymmetric state switching costs under the real options approach, to determine whether the changes add value to the firm. The results indicate that this flexibility can add significant value to the firm.

The efficiency of electrocoagulation using aluminum electrodesin treating wastewater from a dairy industry

Valente,Gerson de Freitas Silva; Mendonça,Regina Célia Santos; Pereira,José Antônio Marques
Fonte: Universidade Federal de Santa Maria Publicador: Universidade Federal de Santa Maria
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/09/2015 EN
Relevância na Pesquisa
36.37%
This research deals with the investigation of electrocoagulation (EC) treatment of wastewater from a dairy plant using aluminum electrodes. Electrolysis time, pH, current density and distance between electrodes were considered to assess the removal efficiency of chemical oxygen demand (COD), total solids (TS) and their fractions and turbidity. Samples were collected from the effluent of a dairy plant using a sampling methodology proportional to the flow. The treatments were applied according to design factorial of half fraction with two levels of treatments and 3 repetitions at the central point. The optimization of parameters for treating dairy industry effluent by electrocoagulation using aluminum electrodes showed that electric current application for 21 minutes, an initial sample pH near 5.0 and a current density of 61.6A m-2 resulted in a significant reduction in COD by 57%; removal of turbidity by 99%, removal of total suspended solids by 92% and volatile suspended solids by 97%; and a final treated effluent pH of approximately 10. Optimum operating condition was used for cost calculations show that operating cost is approximately 3.48R$ m-3.

Technological Learning, Energy Efficiency, and CO2 Emissions in China's Energy Intensive Industries

Rock, Michael T.; Toman, Michael; Cui, Yuanshang; Jiang, Kejun; Song, Yun; Wang, Yanjia
Fonte: World Bank, Washington, DC Publicador: World Bank, Washington, DC
Tipo: Publications & Research :: Policy Research Working Paper; Publications & Research
ENGLISH; EN_US
Relevância na Pesquisa
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Since the onset of economic reforms in 1978, China has been remarkably successful in reducing the carbon dioxide intensities of gross domestic product and industrial production. Most analysts correctly attribute the rapid decline in the carbon dioxide intensity of industrial production to rising energy prices, increased openness to trade and investment, increased competition, and technological change. China's industrial and technology policies also have contributed to lower carbon dioxide intensities, by transforming industrial structure and improving enterprise level technological capabilities. Case studies of four energy intensive industries -- aluminum, cement, iron and steel, and paper -- show how the changes have put these industries on substantially lower carbon dioxide emissions trajectories. Although the changes have not led to absolute declines in carbon dioxide emissions, they have substantially weakened the link between industry growth and carbon dioxide emissions.

Factors Influencing Energy Intensity in Four Chinese Industries

Fisher-Vanden, Karen; Hu, Yong; Jefferson, Gary; Rock, Michael; Toman, Michael
Fonte: World Bank, Washington, D.C. Publicador: World Bank, Washington, D.C.
Tipo: Publications & Research :: Policy Research Working Paper; Publications & Research
ENGLISH
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36.37%
Energy intensity has declined significantly in four Chinese industries -- pulp and paper; cement; iron and steel; and aluminum. While previous studies have identified technological change within an industry to be an important influence on energy intensity, few have examined how industry-specific policies and market factors also affect industry-level intensity. This paper employs unique firm-level data from China's most energy-intensive large and medium-size industrial enterprises in each of these four industries over a six-year period from 1999 to 2004. It empirically examines how China's energy-saving programs, liberalization of domestic markets, openness to the world economy, and other policies, contribute to the decline in energy intensity in these industries. The results suggest that rising energy costs are a significant contributor to the decline in energy intensity in all four industries. China's industrial policies targeting scale economies -- for example, "grasping the large, letting go off the small" -- also seem to have contributed to reductions in energy intensity in these four industries. However...

Análisis de pre inversión para la importación y distribución de aluminio primario y secundario; Pre investment analysis to import and distribute aluminum

Bernal Borda, Oscar Eduardo; Ortiz, Fernando
Fonte: Universidad Militar Nueva Granada; Facultad de Ingeniería; Especialización en Gerencia Integral de Proyectos Publicador: Universidad Militar Nueva Granada; Facultad de Ingeniería; Especialización en Gerencia Integral de Proyectos
Tipo: bachelorThesis; Trabajo de grado Formato: pdf; pdf
SPA
Relevância na Pesquisa
36.29%
El presente ensayo expone cómo opera el esquema de negociación en la importación y comercialización de aluminio en Colombia, a su vez que brinda una idea del movimiento del mercado actual frente al aluminio primario y reciclado. Este metal de aplicación industrial y variada, tiene mercado con alta y constante demanda, pese a su poca oferta, lo que hace complicado su consecución. De allí que este ensayo esté encaminado en relacionar el tipo de aplicación del aluminio con su respectivo modelo de venta y compra, dependiendo si el material es primario o secundario (reciclado). Asimismo, se hace un breve análisis acerca de los tipos de aluminio existentes en el mercado y se definen cuáles son los que tienen mayor demanda en Colombia según el tipo de industrial.; This essay discusses how the scheme operates import trading and marketing of aluminum in Colombia, in turn providing an idea of the current market move against primary and recycled aluminum. This metal and varied industrial applications, has constant high market demand, despite its short supply, making it difficult to achieve them. Hence, this paper is aimed to relate the type of application of aluminum with the respective sale and purchase model, depending on whether the material is primary or secondary (recycled). It also provides a brief analysis of the types of aluminum on the market and identifies which ones are most in demand in Colombia by type of industry.

Particle Size Distribution in Aluminum Manufacturing Facilities

Liu, Sa; Noth, Elizabeth M.; Dixon-Ernst, Christine; Eisen, Ellen A.; Cullen, Mark R.; Hammond, S. Katharine
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
EN
Relevância na Pesquisa
36.3%
As part of exposure assessment for an ongoing epidemiologic study of heart disease and fine particle exposures in aluminum industry, area particle samples were collected in production facilities to assess instrument reliability and particle size distribution at different process areas. Personal modular impactors (PMI) and Minimicro-orifice uniform deposition impactors (MiniMOUDI) were used. The coefficient of variation (CV) of co-located samples was used to evaluate the reproducibility of the samplers. PM2.5 measured by PMI was compared to PM2.5 calculated from MiniMOUDI data. Mass median aerodynamic diameter (MMAD) and concentrations of sub-micrometer (PM1.0) and quasi-ultrafine (PM0.56) particles were evaluated to characterize particle size distribution. Most of CVs were less than 30%. The slope of the linear regression of PMI_PM2.5 versus MiniMOUDI_PM2.5 was 1.03 mg/m3 per mg/m3 (± 0.05), with correlation coefficient of 0.97 (± 0.01). Particle size distribution varied substantively in smelters, whereas it was less variable in fabrication units with significantly smaller MMADs (arithmetic mean of MMADs: 2.59 μm in smelters vs. 1.31 μm in fabrication units, p = 0.001). Although the total particle concentration was more than two times higher in the smelters than in the fabrication units...

The Aluminum Smelting Process

Kvande, Halvor
Fonte: American College of Occupational and Environmental Medicine Publicador: American College of Occupational and Environmental Medicine
Tipo: Artigo de Revista Científica
EN
Relevância na Pesquisa
36.26%
This introduction to the industrial primary aluminum production process presents a short description of the electrolytic reduction technology, the history of aluminum, and the importance of this metal and its production process to modern society. Aluminum's special qualities have enabled advances in technologies coupled with energy and cost savings. Aircraft capabilities have been greatly enhanced, and increases in size and capacity are made possible by advances in aluminum technology. The metal's flexibility for shaping and extruding has led to architectural advances in energy-saving building construction. The high strength-to-weight ratio has meant a substantial reduction in energy consumption for trucks and other vehicles. The aluminum industry is therefore a pivotal one for ecological sustainability and strategic for technological development.

Analysis of the aluminum production chain in Brazil

Machline,Claude; Garcia,Fernando; Amaral Jr.,José Bento; Nobre,Wilson
Fonte: Fundação Getulio Vargas/Escola de Administração de Empresas de São Paulo Publicador: Fundação Getulio Vargas/Escola de Administração de Empresas de São Paulo
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/06/2002 EN
Relevância na Pesquisa
46.26%
This paper's objective is to analyze the Brazilian aluminum production chain. We define production chain as the structured set of operations necessary to transform raw materials into a related group of finished products. The study of such a chain aims at increasing the competitiveness of its elements, focusing on their problems and devising solutions. The methodology adopted consisted in defining the basic production steps; visit plants and factories; interview executives; and analyze the wealth of data gathered. Some principles of production chain dynamics are proposed. The aluminum industry offers today, in Brazil, acute problems, due to currency devaluation, cost and scarcity of electrical energy, invoicing taxes and lack of economies of scale, which threaten its survival.