{"id":6951,"date":"2019-08-23T09:27:29","date_gmt":"2019-08-23T01:27:29","guid":{"rendered":"https:\/\/www.jxscmachine.com\/?post_type=solutions&p=6951"},"modified":"2019-09-25T15:39:20","modified_gmt":"2019-09-25T07:39:20","slug":"processamento-de-bismuto","status":"publish","type":"solutions","link":"https:\/\/www.jxscmachine.com\/pt\/solutions\/bismuth-processing\/","title":{"rendered":"Bismuto"},"content":{"rendered":"
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\"Bismuto\"<\/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 (bismutinite), \u00d3xido (bismite)<\/p>\n

F\u00f3rmula qu\u00edmica<\/strong>
\nBi2S3 (bismutinite), Bi2O3 (bismite)<\/p>\n

Faixa<\/strong>
\nCinzento-chumbo (bismutinite), cinzento a amarelo (bismite)<\/p>\n

Dureza de Mohs<\/strong>
\n2 (bismutinite), 4.5 (bismite)<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div>

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Sistema de cristais<\/strong>
\nOrtorr\u00f4mbico (bismutinite), monocl\u00ednico (bismite)<\/p>\n

Cor<\/strong>
\nCinzento-chumbo a branco-estanho, com um tom amarelado ou iridescente (bismutinite); verde-acinzentado, amarelo-esverdeado a amarelo vivo (bismite)<\/p>\n

Brilho<\/strong>
\nMet\u00e1lico (bismutinite), ba\u00e7o, terroso (bismite)<\/p>\n

Fratura<\/strong>
\nN\u00e3o uniforme (bismutinite)<\/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 bismuto (Bi) \u00e9 um elemento met\u00e1lico branco-prateado com uma tonalidade rosada em superf\u00edcies recentemente quebradas. Os minerais de bismuto mais comuns s\u00e3o a bismutinite e a bismite, mas a maior parte do bismuto \u00e9 recuperado como subproduto do processamento do chumbo.<\/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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A maior parte do bismuto \u00e9 produzida em minas na China, no M\u00e9xico e na Bol\u00edvia. Apenas uma mina na Bol\u00edvia \u00e9 uma mina prim\u00e1ria de bismuto; noutros pa\u00edses, o bismuto \u00e9 um subproduto da extra\u00e7\u00e3o de outros metais. O bismuto \u00e9 um metal de pre\u00e7o moderado, custando mais do que o cobre, o chumbo e o zinco, mas muito menos do que o ouro ou a prata. Al\u00e9m disso, uma parte importante da produ\u00e7\u00e3o mundial de bismuto prov\u00e9m das pequenas quantidades de bismuto presentes em min\u00e9rios de outros metais, que \u00e9 recuperado na B\u00e9lgica e no Jap\u00e3o a partir de min\u00e9rios estrangeiros que s\u00e3o enviados para esses pa\u00edses para fundi\u00e7\u00e3o. Os Estados Unidos produzem pequenas quantidades de bismuto atrav\u00e9s da reciclagem. O bismuto reciclado representa menos de 5% do consumo dos EUA.<\/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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O bismuto \u00e9 utilizado numa s\u00e9rie de aplica\u00e7\u00f5es muito diferentes. Quase nenhuma das utiliza\u00e7\u00f5es \u00e9 para o bismuto met\u00e1lico puro. A maior parte \u00e9 consumida em ligas de bismuto e em produtos farmac\u00eauticos e qu\u00edmicos. O restante \u00e9 utilizado em cer\u00e2mica, tintas, catalisadores e numa variedade de aplica\u00e7\u00f5es menores.<\/p>\n

As ligas de bismuto s\u00e3o \u00fateis por muitas raz\u00f5es:<\/p>\n

O bismuto e muitas das suas ligas expandem-se ligeiramente quando solidificam (congelam). Isto permite que o bismuto preencha todos os cantos de um molde para formar uma r\u00e9plica perfeitamente afiada do molde ou do item que est\u00e1 a ser replicado. Esta \u00e9 tamb\u00e9m uma propriedade valiosa quando utilizada em soldadura ou canaliza\u00e7\u00e3o (uni\u00e3o de tubos).<\/p>\n

Muitas ligas de bismuto t\u00eam um ponto de fus\u00e3o baixo, por vezes mesmo abaixo da temperatura da \u00e1gua a ferver. Assim, uma pe\u00e7a fundida de liga de bismuto pode ser coberta por pl\u00e1stico ou outro material para formar uma pe\u00e7a de m\u00e1quina complexa. O n\u00facleo de liga de bismuto \u00e9 ent\u00e3o removido, bastando derret\u00ea-lo em \u00e1gua quente e despej\u00e1-lo. A utiliza\u00e7\u00e3o de ligas de bismuto de baixo ponto de fus\u00e3o est\u00e1 generalizada nos sistemas de aspers\u00e3o dos edif\u00edcios. Quando a liga derrete no ar aquecido pelo fogo, o sprinkler \u00e9 desligado e a \u00e1gua pulveriza o fogo. Esta aplica\u00e7\u00e3o \u00e9 respons\u00e1vel por mais de um ter\u00e7o do bismuto utilizado anualmente nos Estados Unidos.<\/p>\n

O bismuto met\u00e1lico \u00e9 relativamente inerte e n\u00e3o t\u00f3xico. Substituiu o chumbo t\u00f3xico em muitas aplica\u00e7\u00f5es, tais como canaliza\u00e7\u00f5es, balas, proj\u00e9cteis para aves, ligas met\u00e1licas, soldadura e outras aplica\u00e7\u00f5es.<\/p>\n

Em quarto lugar, muitas ligas de bismuto s\u00e3o relativamente macias e male\u00e1veis. Male\u00e1vel significa que um metal pode ser martelado em folhas finas. O bismuto \u00e9 ligado ao ferro para criar o que \u00e9 conhecido como \"ferros male\u00e1veis\".<\/p>\n

Os compostos de bismuto s\u00e3o utilizados em medicamentos para o desconforto g\u00e1strico (da\u00ed o nome comercial Pepto-Bismol), no tratamento de \u00falceras g\u00e1stricas, em cremes calmantes e em cosm\u00e9ticos.<\/p>\n

A ind\u00fastria utiliza o bismuto numa variedade de outras aplica\u00e7\u00f5es. O bismuto \u00e9 um catalisador na produ\u00e7\u00e3o de fibras acr\u00edlicas. O bismuto substitui o chumbo nalguns esmaltes e tintas cer\u00e2micos porque o bismuto n\u00e3o \u00e9 t\u00f3xico.<\/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 (bismutinite), \u00f3xido (bismite) F\u00f3rmula qu\u00edmica Bi2S3 (bismutinite), Bi2O3 (bismite) Raias Cinzento-chumbo (bismutinite), cinzento a amarelo (bismite) Dureza de Mohs 2 (bismutinite), 4.5 (bismite) Sistema cristalino Ortorr\u00f4mbico (bismutinite), monocl\u00ednico (bismite) Cor Cinzento-chumbo a branco-estanho, com um tom amarelado ou iridescente (bismutinite); verde acinzentado, amarelo esverdeado a amarelo brilhante (bismite) Brilho ... Continuar a ler Bismuto<\/span><\/a>","protected":false},"author":1,"featured_media":6952,"parent":0,"menu_order":66,"comment_status":"open","ping_status":"open","template":"","format":"standard","meta":{"_acf_changed":false,"ngg_post_thumbnail":0,"footnotes":""},"class_list":["post-6951","solutions","type-solutions","status-publish","format-standard","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"\nBismuth Processing | Equipment, Flow, Cases - JXSC Machine<\/title>\n<meta name=\"description\" content=\"Bismuth 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-de-bismuto\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bismuth Processing | Equipment, Flow, Cases - 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