{"id":19128,"date":"2022-03-23T15:18:42","date_gmt":"2022-03-23T07:18:42","guid":{"rendered":"https:\/\/www.jxscmachine.com\/?post_type=new&#038;p=19128"},"modified":"2025-03-05T10:04:20","modified_gmt":"2025-03-05T02:04:20","slug":"progresso-da-investigacao-reagentes-de-flotacao-de-minerio-de-tantalo-e-niobio","status":"publish","type":"new","link":"https:\/\/www.jxscmachine.com\/pt\/new\/research-progress-tantalum-niobium-ore-flotation-reagents\/","title":{"rendered":"Investiga\u00e7\u00e3o e progresso dos reagentes de flota\u00e7\u00e3o do min\u00e9rio de t\u00e2ntalo-ni\u00f3bio"},"content":{"rendered":"<p>Para lidar com o min\u00e9rio com um elevado teor de p\u00f3 ou lama prim\u00e1ria, a opera\u00e7\u00e3o de lavagem \u00e9 essencial. Os colectores normalmente utilizados para <strong>flota\u00e7\u00e3o de t\u00e2ntalo-ni\u00f3bio<\/strong> incluir <em><strong>\u00e1cidos gordos, \u00e1cidos ars\u00ednicos, \u00e1cidos fosf\u00f3nicos, \u00e1cidos hidrox\u00e2micos, colectores cati\u00f3nicos,<\/strong><\/em> etc. A polui\u00e7\u00e3o ambiental dos colectores e o custo dos produtos qu\u00edmicos s\u00e3o muito importantes.<\/p>\n<h2><a href=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/08\/tantalum-niobium-ore.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-6059\" src=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/08\/tantalum-niobium-ore.jpg\" alt=\"\" width=\"532\" height=\"457\" srcset=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/08\/tantalum-niobium-ore.jpg 532w, https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/08\/tantalum-niobium-ore-300x258.jpg 300w\" sizes=\"auto, (max-width: 532px) 100vw, 532px\" \/><\/a><\/h2>\n<h2>Coletor de minerais de t\u00e2ntalo e ni\u00f3bio<\/h2>\n<p>Os colectores mais eficazes para o min\u00e9rio de t\u00e2ntalo e ni\u00f3bio s\u00e3o os \u00e1cidos gordos, os \u00e1cidos ars\u00ednicos, os \u00e1cidos fosf\u00f3nicos, os \u00e1cidos hidrox\u00e2micos e os colectores cati\u00f3nicos.<\/p>\n<h3>1. Colectores de \u00e1cidos gordos<\/h3>\n<p>Polykin e Gladkikh, na antiga Uni\u00e3o Sovi\u00e9tica, utilizaram colectores de min\u00e9rio de \u00f3xido: \u00e1cido oleico, oleato de s\u00f3dio, tridecanoato de s\u00f3dio, sulfato de alcano de s\u00f3dio e fosfato de isooctilo de s\u00f3dio para estudar em pormenor a capacidade de flutua\u00e7\u00e3o do niobato-tantalite. As experi\u00eancias mostram que quando o \u00e1cido gordo \u00e9 utilizado como coletor, a capacidade de recolha do grupo de hidrocarbonetos saturados \u00e9 pior do que a do grupo insaturado. Quando o valor de pH \u00e9 6-8, a flota\u00e7\u00e3o de niobato-tantalite com oleato de s\u00f3dio \u00e9 muito eficaz, e \u00e9 inibida em meio \u00e1cido forte e meio alcalino forte. A modifica\u00e7\u00e3o dos \u00e1cidos gordos pode melhorar a sua captura selectiva. Por exemplo, s\u00e3o introduzidos na mol\u00e9cula novos grupos activos eficazes, como o grupo \u00e1cido sulf\u00f3nico, o grupo policarbox\u00edlico, o grupo \u00e1cido sulf\u00farico, o grupo halog\u00e9neo, o grupo amina (amino), o grupo aminoacilo e o grupo amida.<\/p>\n<h3>2. Colectores de \u00e1cido ars\u00ednico<\/h3>\n<p>O \u00e1cido ars\u00ednico pode formar fortes compostos de superf\u00edcie com minerais de metais raros, como o t\u00e2ntalo e o ni\u00f3bio, e os grupos de hidrocarbonetos s\u00e3o exteriores, tornando os minerais hidrof\u00f3bicos. No entanto, n\u00e3o existe tal adsor\u00e7\u00e3o qu\u00edmica com minerais de ganga, pelo que a capacidade de recolha \u00e9 forte e a seletividade \u00e9 boa. A desvantagem \u00e9 que existem problemas de polui\u00e7\u00e3o na produ\u00e7\u00e3o e utiliza\u00e7\u00e3o de subst\u00e2ncias que cont\u00eam arsina. O \u00e1cido benzil ars\u00ednico e o \u00e1cido toluars\u00ednico s\u00e3o colectores eficazes para os minerais de t\u00e2ntalo-ni\u00f3bio, e a utiliza\u00e7\u00e3o mista de \u00e1cido ars\u00ednico e xantato pode melhorar significativamente a taxa de recupera\u00e7\u00e3o dos minerais de t\u00e2ntalo-ni\u00f3bio.&nbsp;<\/p>\n<h3>3. Colectores de \u00e1cido fosf\u00f3nico<\/h3>\n<p>A investiga\u00e7\u00e3o sobre a recolha de rutilo de ferroni\u00f3bio com \u00e1cido bifosf\u00f3nico mostra que quando o valor de pH da pasta \u00e9 de 2 a 4, o \u00e1cido bifosf\u00f3nico \u00e9 um bom coletor de rutilo de ferroni\u00f3bio e a sua taxa de recupera\u00e7\u00e3o atinge 90,87% a 91,70%. O \u00e1cido \u00e9 adsorvido na superf\u00edcie do rutilo de ferroni\u00f3bio, e a forma de adsor\u00e7\u00e3o \u00e9 principalmente a adsor\u00e7\u00e3o qu\u00edmica.<\/p>\n<h3>4. Colectores de \u00e1cidos hidrox\u00e2micos<\/h3>\n<p>A <strong>min\u00e9rio de lama fina de t\u00e2ntalo-ni\u00f3bio<\/strong> num determinado local do meu pa\u00eds utiliza \u00e1cido hidrox\u00e2mico industrial e \u00f3leo de transformador para desbaste. Quando o min\u00e9rio de alimenta\u00e7\u00e3o cont\u00e9m 0,094% Nb2O5, o grau de concentrado bruto de Nb2O5 \u00e9 de 0,9-1,0% e a taxa de recupera\u00e7\u00e3o \u00e9 de cerca de 90%.&nbsp;<\/p>\n<h3>5. Coletor cati\u00f3nico<\/h3>\n<p>Estudos demonstraram que o acetato de laurilo e am\u00f3nio pode flotar eficazmente os minerais de niobato num meio neutro.&nbsp;<\/p>\n<h3>6. Outros coleccionadores<\/h3>\n<p>A investiga\u00e7\u00e3o sobre o desempenho da recolha de minerais de t\u00e2ntalo e ni\u00f3bio com o novo agente N2 mostra que o N2 com uma cadeia de carbono elevada \u00e9 um coletor eficaz de minerais de t\u00e2ntalo e ni\u00f3bio. A flota\u00e7\u00e3o do min\u00e9rio de ni\u00f3bio de Bayan Obo com N-nitrosofenil hidroxilamina obteve bons resultados. Experi\u00eancias explorat\u00f3rias na antiga Uni\u00e3o Sovi\u00e9tica mostraram que os sulfatos de hidrocarbonetos s\u00e3o tamb\u00e9m adequados para a flota\u00e7\u00e3o de niobite-tantalite em dep\u00f3sitos de pegmatite. Muitos agentes de flota\u00e7\u00e3o, especialmente os colectores, n\u00e3o s\u00e3o muito eficazes quando utilizados isoladamente, mas quando alguns agentes s\u00e3o utilizados em combina\u00e7\u00e3o numa determinada propor\u00e7\u00e3o, o efeito n\u00e3o \u00e9 um simples efeito aditivo, mas um efeito sin\u00e9rgico, ou seja, 1 +1&gt;2 sinergia. Por exemplo, o xantato e o \u00e1cido hidrox\u00e2mico s\u00e3o combinados para flutuar o \u00f3xido de cobre; o oleato de s\u00f3dio e o \u00e1cido hidrox\u00e2mico s\u00e3o combinados para flutuar a andaluzite; a utiliza\u00e7\u00e3o mista de sab\u00e3o Tal, a flota\u00e7\u00e3o de lamas finas de volframite; o F2O3 e o \u00e1cido hidrox\u00e2mico salic\u00edlico misturados com a flota\u00e7\u00e3o de lamas finas de cassiterite obtiveram bons resultados.&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h2>Regulador de flota\u00e7\u00e3o de min\u00e9rio de t\u00e2ntalo-ni\u00f3bio<\/h2>\n<p>Os principais minerais de ganga do t\u00e2ntalo e ni\u00f3bio s\u00e3o os minerais de silicato, a fluorite e os minerais de carbonato. Os inibidores t\u00edpicos destes minerais s\u00e3o o vidro de \u00e1gua, o hexametafosfato de s\u00f3dio, o amido, o \u00e1cido pirofosf\u00f3rico, o hidrogenofosfato de s\u00f3dio, o lignossulfonato de s\u00f3dio, os taninos, o \u00e1cido l\u00e1tico, o \u00e1cido c\u00edtrico, o \u00e1cido tart\u00e1rico e semelhantes. O valor do pH tem uma grande influ\u00eancia na <a href=\"https:\/\/www.jxscmachine.com\/pt\/processo-de-flotacao-de-minerais-de-sulfureto\/\">processo de flota\u00e7\u00e3o<\/a> de t\u00e2ntalo e ni\u00f3bio, e os reguladores habitualmente utilizados para ajustar o valor do pH incluem o \u00e1cido sulf\u00farico, o \u00e1cido clor\u00eddrico, o hidr\u00f3xido de s\u00f3dio, a soda, etc.<\/p>\n<h2><a href=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/09\/Inflatable-flotation-machine.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-8123\" src=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/09\/Inflatable-flotation-machine.jpg\" alt=\"M\u00e1quina de flota\u00e7\u00e3o insufl\u00e1vel\" width=\"700\" height=\"567\" srcset=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/09\/Inflatable-flotation-machine.jpg 700w, https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/09\/Inflatable-flotation-machine-300x243.jpg 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/a><\/h2>\n<h2>Flota\u00e7\u00e3o de t\u00e2ntalo-ni\u00f3bio Problemas existentes<\/h2>\n<h3>O problema da capacidade de cole\u00e7\u00e3o do colecionador.<\/h3>\n<p>As mol\u00e9culas que cont\u00eam grupos funcionais -COOH, -SO4H, -SO3H t\u00eam forte capacidade de recolha e fraca seletividade, sendo apenas adequadas para a flota\u00e7\u00e3o de lamas finas de t\u00e2ntalo-ni\u00f3bio com composi\u00e7\u00e3o mineral simples e quartzo como ganga principal. A capacidade do \u00e1cido hidrox\u00e2mico para recolher lama fina de t\u00e2ntalo-ni\u00f3bio \u00e9 mais fraca do que a do \u00e1cido gordo, mas \u00e9 melhor escolher. O \u00e1cido fosf\u00f3nico tem uma capacidade relativamente forte para recolher min\u00e9rio de t\u00e2ntalo-ni\u00f3bio.&nbsp;<\/p>\n<h3>A polui\u00e7\u00e3o ambiental dos colectores e o custo dos produtos qu\u00edmicos.<\/h3>\n<p>O \u00e1cido ars\u00f3nico pode formar fortes compostos de superf\u00edcie com minerais met\u00e1licos, tais como <strong><a href=\"https:\/\/www.jxscmachine.com\/pt\/solucoes\/processamento-de-tantalo\/\">t\u00e2ntalo<\/a> e ni\u00f3bio<\/strong>e os grupos de hidrocarbonetos s\u00e3o exteriores, tornando os minerais hidrof\u00f3bicos, mas n\u00e3o existe tal adsor\u00e7\u00e3o qu\u00edmica com minerais de ganga, pelo que tem uma forte capacidade de recolha e boa seletividade. Os i\u00f5es Ca2+ e Mg2+ s\u00e3o insens\u00edveis e t\u00eam grande adaptabilidade a min\u00e9rios com elevado teor de calcite. No entanto, o \u00e1cido ars\u00e9nico \u00e9 altamente t\u00f3xico e pode causar polui\u00e7\u00e3o ambiental. Na flota\u00e7\u00e3o de lama fina de t\u00e2ntalo e ni\u00f3bio, a dosagem de produtos qu\u00edmicos utilizados \u00e9 grande e o pre\u00e7o \u00e9 elevado; ao mesmo tempo, alguns produtos qu\u00edmicos s\u00e3o mais t\u00f3xicos, o que exige maiores custos de prote\u00e7\u00e3o ambiental, aumentando assim o custo da beneficia\u00e7\u00e3o. Quando se utiliza <strong>flota\u00e7\u00e3o de \u00e1cido hidrox\u00e2mico<\/strong>O efeito \u00e9 melhor, mas a dosagem \u00e9 maior. Nos \u00faltimos anos, foram feitos alguns progressos na investiga\u00e7\u00e3o de reagentes de flota\u00e7\u00e3o de t\u00e2ntalo e ni\u00f3bio na China. No entanto, devido ao elevado pre\u00e7o dos reagentes, apenas algumas minas de ni\u00f3bio estrangeiras utilizam <strong>m\u00e9todos de flota\u00e7\u00e3o<\/strong>como o Concentrador Oka no Canad\u00e1 e a Mina Araksa no Brasil.<\/p>","protected":false},"excerpt":{"rendered":"<p>Para tratar o min\u00e9rio com um elevado teor de p\u00f3 ou lama prim\u00e1ria, a opera\u00e7\u00e3o de lavagem \u00e9 essencial. Os colectores normalmente utilizados na flota\u00e7\u00e3o de t\u00e2ntalo-ni\u00f3bio incluem \u00e1cidos gordos, \u00e1cidos ars\u00ednicos, \u00e1cidos fosf\u00f3nicos, \u00e1cidos hidrox\u00e2micos, colectores cati\u00f3nicos, etc. A polui\u00e7\u00e3o ambiental causada pelos colectores e o custo dos produtos qu\u00edmicos s\u00e3o muito importantes. Minerais de t\u00e2ntalo e ni\u00f3bio ... <a href=\"https:\/\/www.jxscmachine.com\/pt\/new\/research-progress-tantalum-niobium-ore-flotation-reagents\/\" class=\"more-link\">Continuar a ler <span class=\"screen-reader-text\">Investiga\u00e7\u00e3o e progresso dos reagentes de flota\u00e7\u00e3o do min\u00e9rio de t\u00e2ntalo-ni\u00f3bio<\/span><\/a><\/p>","protected":false},"author":1,"featured_media":8119,"parent":0,"menu_order":190,"comment_status":"closed","ping_status":"open","template":"","format":"standard","meta":{"_acf_changed":false,"ngg_post_thumbnail":0,"footnotes":""},"categories":[],"tags":[646],"class_list":["post-19128","new","type-new","status-publish","format-standard","has-post-thumbnail","hentry","tag-tantalum-niobium-ore"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Research and Progress of Tantalum-niobium Ore Flotation Reagents - JXSC Machine<\/title>\n<meta name=\"description\" content=\"The tantalum-niobium ore flotation reagents include collectors and regulators. 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