{"id":6933,"date":"2019-08-23T09:11:23","date_gmt":"2019-08-23T01:11:23","guid":{"rendered":"https:\/\/www.jxscmachine.com\/?post_type=solutions&p=6933"},"modified":"2019-09-25T15:40:08","modified_gmt":"2019-09-25T07:40:08","slug":"processamento-do-arsenio","status":"publish","type":"solutions","link":"https:\/\/www.jxscmachine.com\/pt\/solutions\/arsenic-processing\/","title":{"rendered":"Ars\u00e9nio"},"content":{"rendered":"
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\"Ars\u00e9nio\"<\/div>\n\t\t<\/figure>\n\t<\/div>\n
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Tipo<\/strong>
\nElemento (Minerais\/res\u00edduos de)<\/p>\n

Classifica\u00e7\u00e3o de minerais<\/strong>
\nSulfureto<\/p>\n

F\u00f3rmula qu\u00edmica<\/strong>
\nFeAsS (aresenopirite)<\/p>\n

Faixa<\/strong>
\nPreto<\/p>\n

Dureza de Mohs<\/strong>
\n5.5 - 6<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div>

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Sistema de cristais<\/strong>
\nmonocl\u00ednico<\/p>\n

Cor<\/strong>
\nCinzento a\u00e7o a branco prata<\/p>\n

Brilho<\/strong>
\nMet\u00e1lico<\/p>\n

Fratura<\/strong>
\nSubconchoidal<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div>

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Descri\u00e7\u00e3o<\/h2><\/div><\/div>\n\t
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O ars\u00e9nio (As) \u00e9 classificado como um semi-metal ou metaloide. Na natureza, \u00e9 normalmente encontrado como metal em n\u00edveis baixos na maioria dos solos e em concentra\u00e7\u00f5es mais elevadas associadas a alguns min\u00e9rios de cobre, chumbo e zinco. O mineral de ars\u00e9nio mais comum \u00e9 a arsenopirite, um composto de ferro, ars\u00e9nio e enxofre.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n

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Rela\u00e7\u00e3o com a explora\u00e7\u00e3o mineira<\/h2><\/div><\/div>\n\t
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O ars\u00e9nio met\u00e1lico ocorre muito raramente na sua forma pura na natureza. O mineral de ars\u00e9nio mais comum \u00e9 a arsenopirite, um composto de ferro, ars\u00e9nio e enxofre. V\u00e1rios outros minerais menos comuns cont\u00eam ars\u00e9nio, incluindo o orpiment, o realgar e a enargite, que s\u00e3o sulfuretos de ars\u00e9nio. A maior parte do ars\u00e9nio n\u00e3o \u00e9 obtida a partir de um min\u00e9rio de ars\u00e9nio, mas como um subproduto no tratamento de ouro, prata, cobre e outros min\u00e9rios met\u00e1licos. A legisla\u00e7\u00e3o ambiental exige que o ars\u00e9nio seja removido dos min\u00e9rios, para que n\u00e3o entre no ambiente atrav\u00e9s de gases, fluidos ou s\u00f3lidos.<\/p>\n

Quantidades significativas de ars\u00e9nio est\u00e3o associadas aos dep\u00f3sitos de cobre e ouro no Chile, nas Filipinas e em muitos outros pa\u00edses. No entanto, muitos pa\u00edses produzem ars\u00e9nio como subproduto da fundi\u00e7\u00e3o de min\u00e9rios met\u00e1licos. A China \u00e9 de longe o maior produtor, com o Chile e Marrocos a fornecerem quantidades importantes, e uma produ\u00e7\u00e3o menor de cerca de uma d\u00fazia de outros pa\u00edses com fundi\u00e7\u00f5es de metais.<\/p>\n

Os Estados Unidos n\u00e3o extraem ars\u00e9nio desde 1985 e importam todo o ars\u00e9nio met\u00e1lico e compostos de ars\u00e9nio que consomem. Muito pouco \u00e9 reciclado, exceto em res\u00edduos de f\u00e1bricas que produzem compostos de ars\u00e9nio e quantidades limitadas de ars\u00e9nio met\u00e1lico foram recuperadas a partir de sucata de semicondutores de arsenieto de g\u00e1lio (GaAs).<\/p>\n\n\t\t<\/div>\n\t<\/div>\n

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Utiliza\u00e7\u00f5es<\/h2><\/div><\/div>\n\t
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Apenas cerca de 5% do consumo de ars\u00e9nio \u00e9 do elemento met\u00e1lico. A maior parte \u00e9 utilizada para ligar (misturar) o ars\u00e9nio com chumbo, cobre ou outros metais para utiliza\u00e7\u00f5es espec\u00edficas. Como metaloide, o ars\u00e9nio \u00e9 um semicondutor, tal como o sil\u00edcio. Isto significa que conduz alguma eletricidade como um metal, mas n\u00e3o toda a eletricidade que um verdadeiro condutor como o cobre conduziria. Consequentemente, cerca de 1\/10 % de ars\u00e9nio \u00e9 consumido no fabrico de semicondutores de arsenieto de g\u00e1lio para utiliza\u00e7\u00e3o em eletr\u00f3nica. Algum ars\u00e9nio \u00e9 tamb\u00e9m utilizado no fabrico de vidro.<\/p>\n

A maior parte do consumo nos EUA \u00e9 sob a forma de arseniato de cobre cromatado (CCA), um produto qu\u00edmico utilizado como conservante de madeira para postes telef\u00f3nicos, postes de veda\u00e7\u00e3o, estacas e madeiras de funda\u00e7\u00e3o. O CCA reduz significativamente a podrid\u00e3o e elimina a destrui\u00e7\u00e3o da madeira por t\u00e9rmitas, formigas e outros insectos. No entanto, a utiliza\u00e7\u00e3o do CCA est\u00e1 a ser gradualmente eliminada nos EUA, pelo que se espera uma grande diminui\u00e7\u00e3o do mercado do ars\u00e9nio.<\/p>\n

Antigamente, a utiliza\u00e7\u00e3o mais importante dos compostos de ars\u00e9nio era como inseticida pulverizado nos campos e pomares. Esta utiliza\u00e7\u00e3o desapareceu completamente na maioria dos pa\u00edses, devido \u00e0 natureza venenosa dos compostos de ars\u00e9nio. A contamina\u00e7\u00e3o por ars\u00e9nio \u00e9 um problema em algumas \u00e1guas de po\u00e7os e pode estar associada \u00e0 drenagem de minas.<\/p>\n

O ars\u00e9nio n\u00e3o \u00e9 recuperado a partir de quaisquer res\u00edduos ou em qualquer programa de reciclagem. Algum \u00e9 recuperado do escoamento em instala\u00e7\u00f5es de tratamento de madeira.<\/p>\n

Curiosamente, uma quantidade vestigial de ars\u00e9nio \u00e9 necess\u00e1ria para a boa sa\u00fade e o crescimento dos animais, incluindo os seres humanos. 0,00001% \u00e9 necess\u00e1rio para o crescimento e para um sistema nervoso saud\u00e1vel.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n

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Casos relacionados<\/h2><\/div><\/div><\/div><\/div><\/div><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"Tipo Elemento (Minerais\/res\u00edduos de) Classifica\u00e7\u00e3o do mineral Sulfureto F\u00f3rmula qu\u00edmica FeAsS (aresenopirite) Riscas Pretas Dureza de Mohs 5,5 - 6 Sistema cristalino monocl\u00ednico Cor Cinzento a\u00e7o a branco prata Brilho met\u00e1lico Fratura subconchoidal Descri\u00e7\u00e3o O ars\u00e9nio (As) \u00e9 classificado como um semi-metal ou metaloide. Na natureza, \u00e9 comum encontrar-se como metal em n\u00edveis baixos na maioria dos ... Continuar a ler Ars\u00e9nio<\/span><\/a>","protected":false},"author":1,"featured_media":6899,"parent":0,"menu_order":68,"comment_status":"open","ping_status":"open","template":"","format":"standard","meta":{"_acf_changed":false,"ngg_post_thumbnail":0,"footnotes":""},"class_list":["post-6933","solutions","type-solutions","status-publish","format-standard","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"\nArsenic Processing | Equipment, Flow, Cases - JXSC Machine<\/title>\n<meta name=\"description\" content=\"Arsenic processing description from its geology mineral property to how to extract mineral from rock and placer deposit, related processing plant flow chart and layout design.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.jxscmachine.com\/pt\/solucoes\/processamento-do-arsenio\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Arsenic Processing | Equipment, Flow, Cases - 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