scholarly journals Impactos socioambientais provocados por atividade mineradora no município de Juruti (PA)

2018 ◽  
Vol 9 (6) ◽  
pp. 241-253
Author(s):  
Verena Cibele Soares Moura ◽  
Paula Cristiane Nogueira Valente ◽  
Ynglea Georgina de Freitas Goch ◽  
José Max Barbosa Oliveira Junior
Keyword(s):  

A implantação de grandes projetos na Amazônia apresenta dinâmicas marcadas por impactos. Este trabalho descreve os impactos socioambientais gerados por um grande empreendimento comandado pela empresa multinacional Aluminum Company of America - ALCOA, no município de Juruti (PA), na visão dos moradores da área urbana. Trata-se de uma pequena cidade no interior do estado do Pará, que se incorpora à economia global devido ao ciclo produtivo do alumínio, através da extração de bauxita. A metodologia aplicada consistiu na utilização de questionários, como instrumento para a coleta de dados em nove bairros, com posterior elaboração de gráficos, tabelas e cujos valores obtidos foram sumarizados pela Análise de Componentes Principais (PCA) para verificar a distinção entre dois grupos de bairros, definidos como antigos e recentes. A pesquisa apontou que, no que concerne à infraestrutura, à saúde, e ao meio ambiente, houve tanto impactos positivos, quanto negativos; já no que diz respeito ao crescimento populacional desordenado e à criminalidade, apenas negativos; enquanto que, no que se relaciona à educação, ao emprego e à economia, somente efeitos positivos. Percebe-se, portanto, que, em Juruti, houve mais impactos positivos do que negativos. O presente estudo contribui para o entendimento de que as transformações ocorridas são desdobramentos das relações existentes entre os circuitos espaciais produtivos e os locais afetados, bem como das interações sociais, econômicas e ambientais estabelecidas no município.

Alloy Digest ◽  
1967 ◽  
Vol 16 (12) ◽  

Abstract Alcan B33S is an aluminum alloy recommended for architectural shapes requiring hard, corrosion resistant, colored finishes. It contains enough magnesium to render it heat treatable. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Al-170. Producer or source: Aluminum Company of Canada Ltd.


Alloy Digest ◽  
1962 ◽  
Vol 11 (3) ◽  

Abstract ALUMINUM 220 is a 10% magnesium-aluminum casting alloy having the highest combination of mechanical properties, corrosion resistance and machinability. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fatigue. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Al-112. Producer or source: Aluminum Company of America.


Alloy Digest ◽  
1955 ◽  
Vol 4 (8) ◽  

Abstract ALUMINUM 5357 is an aluminum-magnesium-manganese alloy of the non-heat-treatable type. Formerly known as Aluminum C57S or Aluminum K157. This datasheet provides information on composition, physical properties, hardness, tensile properties, and shear and bearing strength. It also includes information on as well as forming, machining, and joining. Filing Code: Al-30. Producer or source: Aluminum Company of America.


Alloy Digest ◽  
1966 ◽  
Vol 15 (3) ◽  

Abstract Aluminum 212 is a copper, silicon, aluminum-base sand casting alloy having good machinability and good castability. It is recommended for general machinery and utility castings. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fatigue. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Al-153. Producer or source: Aluminum Company of America.


Alloy Digest ◽  
1957 ◽  
Vol 6 (7) ◽  

Abstract ALCAN 350 is a 10% magnesium-aluminum casting alloy having high mechanical properties, excellent machinability, and good corrosion resistance. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fatigue. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Al-52. Producer or source: Aluminum Company of Canada Ltd.


Alloy Digest ◽  
1990 ◽  
Vol 39 (1) ◽  

Abstract ALCOA ALUMINUM ALLOY 7050 is an aluminum-zinc-copper-magnesium alloy with a superior combination of strength, stress-corrosion cracking resistance and toughness, particularly in thick sections. In thin sections it also possesses an excellent combination of properties that are important for aerospace applications. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep. It also includes information on low and high temperature performance, and corrosion resistance as well as forming, heat treating, and joining. Filing Code: Al-233. Producer or source: Aluminum Company of America. Originally published as Aluminum 7050, January 1979, revised January 1990.


Alloy Digest ◽  
1967 ◽  
Vol 16 (2) ◽  

Abstract Aluminum A357 is a high strength, pressure tight sand and permanent mold aluminum casting alloy. It is age-hardenable. It is recommended for cast gear cases, cylinder heads, transmission cases and strong structural castings. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fatigue. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Al-163. Producer or source: Aluminum Company of America.


Alloy Digest ◽  
1958 ◽  
Vol 7 (7) ◽  

Abstract ALUMINUM 6151, formerly A51S Alloy, is an aluminum forging alloy combining good forgeability, strength, and resistance to corrosion. It responds to an age-hardening heat treatment. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength as well as fatigue. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: Al-67. Producer or source: Aluminum Company of America.


Alloy Digest ◽  
1953 ◽  
Vol 2 (12) ◽  

Abstract ALUMINUM 62S is a magnesium silicide type of wrought aluminum alloy with high resistance to fresh and salt water corrosion. It responds to age hardening heat treatment for high mechanical properties. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Al-11. Producer or source: Aluminum Company of America.


Alloy Digest ◽  
1964 ◽  
Vol 13 (11) ◽  

Abstract Aluminum 214 is a non-heat treatable alloy containing 4% magnesium and characterized by excellent corrosion resistance and excellent weldability. It is recommended for marine applications and food processing equipment. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fatigue. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Al-141. Producer or source: Aluminum Company of America.


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