{"id":7439,"date":"2025-01-26T06:45:42","date_gmt":"2025-01-26T06:45:42","guid":{"rendered":"https:\/\/jinsuncarbon.com\/?p=7439"},"modified":"2025-01-26T06:46:19","modified_gmt":"2025-01-26T06:46:19","slug":"derretimento-de-ouro-em-um-cadinho","status":"publish","type":"post","link":"https:\/\/jinsuncarbon.com\/pt\/derretimento-de-ouro-em-um-cadinho\/","title":{"rendered":"Derretendo ouro em um cadinho - um guia simples"},"content":{"rendered":"<p>Na metalurgia e na fabrica\u00e7\u00e3o de joias, a fus\u00e3o do ouro \u00e9 uma opera\u00e7\u00e3o fundamental. Devido \u00e0 sua resist\u00eancia a altas temperaturas e boa estabilidade qu\u00edmica, <a href=\"https:\/\/jinsuncarbon.com\/pt\/\/cadinho-de-grafite\/\">Cadinho de grafite<\/a> tornou-se um recipiente comum para derreter ouro. Este artigo explicar\u00e1 em detalhes a prepara\u00e7\u00e3o, o processo e a seguran\u00e7a de us\u00e1-lo para derreter ouro.<\/p><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u00cdndice<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Alternar tabela de conte\u00fado\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Alternar<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/jinsuncarbon.com\/pt\/derretimento-de-ouro-em-um-cadinho\/#Materials_and_equipment_for_melting_gold_with_graphite_crucible\" >Materiais e equipamentos para fus\u00e3o de ouro com cadinho de grafite<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/jinsuncarbon.com\/pt\/derretimento-de-ouro-em-um-cadinho\/#Preparation_before_melting_gold_in_graphite_crucible\" >Prepara\u00e7\u00e3o antes da fus\u00e3o do ouro em um cadinho de grafite<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/jinsuncarbon.com\/pt\/derretimento-de-ouro-em-um-cadinho\/#Site_cleaning\" >Limpeza do local<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/jinsuncarbon.com\/pt\/derretimento-de-ouro-em-um-cadinho\/#Check_the_device\" >Verifique o dispositivo<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/jinsuncarbon.com\/pt\/derretimento-de-ouro-em-um-cadinho\/#Gold_weighing_and_preparation\" >Pesagem e prepara\u00e7\u00e3o do ouro<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/jinsuncarbon.com\/pt\/derretimento-de-ouro-em-um-cadinho\/#Detailed_explanation_of_melting_process_with_graphite_crucible\" >Explica\u00e7\u00e3o detalhada do processo de fus\u00e3o com cadinho de grafite<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/jinsuncarbon.com\/pt\/derretimento-de-ouro-em-um-cadinho\/#Charge_into_graphite_crucible\" >Carregar no cadinho de grafite<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/jinsuncarbon.com\/pt\/derretimento-de-ouro-em-um-cadinho\/#Set_furnace_parameters\" >Definir par\u00e2metros do forno<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/jinsuncarbon.com\/pt\/derretimento-de-ouro-em-um-cadinho\/#Heat_melting_of_gold_in_graphite_crucible\" >Fus\u00e3o t\u00e9rmica de ouro em cadinho de grafite<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/jinsuncarbon.com\/pt\/derretimento-de-ouro-em-um-cadinho\/#Key_points_in_the_melting_process_of_gold_in_graphite_crucible\" >Pontos-chave no processo de fus\u00e3o de ouro em cadinho de grafite<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/jinsuncarbon.com\/pt\/derretimento-de-ouro-em-um-cadinho\/#Temperature_monitoring\" >Monitoramento de temperatura<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/jinsuncarbon.com\/pt\/derretimento-de-ouro-em-um-cadinho\/#Mixing_skills_in_graphite_crucible\" >Habilidades de mistura em cadinho de grafite<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/jinsuncarbon.com\/pt\/derretimento-de-ouro-em-um-cadinho\/#Safety_precautions_for_using_graphite_crucible\" >Precau\u00e7\u00f5es de seguran\u00e7a para o uso do cadinho de grafite<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/jinsuncarbon.com\/pt\/derretimento-de-ouro-em-um-cadinho\/#Conclusion\" >Conclus\u00e3o<\/a><\/li><\/ul><\/nav><\/div>\n\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-7448 alignnone\" src=\"https:\/\/jinsuncarbon.com\/wp-content\/uploads\/2025\/01\/melting-gold-in-a-crucible.jpg\" alt=\"Derretimento de ouro em um cadinho\" width=\"624\" height=\"465\" srcset=\"https:\/\/jinsuncarbon.com\/wp-content\/uploads\/2025\/01\/melting-gold-in-a-crucible.jpg 1024w, https:\/\/jinsuncarbon.com\/wp-content\/uploads\/2025\/01\/melting-gold-in-a-crucible-300x224.jpg 300w, https:\/\/jinsuncarbon.com\/wp-content\/uploads\/2025\/01\/melting-gold-in-a-crucible-768x572.jpg 768w, https:\/\/jinsuncarbon.com\/wp-content\/uploads\/2025\/01\/melting-gold-in-a-crucible-16x12.jpg 16w, https:\/\/jinsuncarbon.com\/wp-content\/uploads\/2025\/01\/melting-gold-in-a-crucible-600x447.jpg 600w\" sizes=\"(max-width: 624px) 100vw, 624px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Materials_and_equipment_for_melting_gold_with_graphite_crucible\"><\/span>Materiais e equipamentos para fus\u00e3o de ouro com cadinho de grafite<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong><b>Cadinho de grafite:<\/b><\/strong>\u00a0Resist\u00eancia a altas temperaturas, natureza est\u00e1vel, n\u00e3o reage com o ouro. Selecione o tamanho de acordo com a quantidade de ouro para garantir a efici\u00eancia da fus\u00e3o.<\/p>\n<p>&nbsp;<\/p>\n<p><strong><b>Forno:<\/b><\/strong>\u00a0Equipamento de aquecimento principal, controle de temperatura do forno de resist\u00eancia, f\u00e1cil opera\u00e7\u00e3o. Aquecimento r\u00e1pido do forno de indu\u00e7\u00e3o, alta efici\u00eancia, mas alto custo. Selecione par\u00e2metros como a pot\u00eancia e a precis\u00e3o do controle de temperatura conforme necess\u00e1rio.<\/p>\n<p>&nbsp;<\/p>\n<p><strong><b>Mat\u00e9rias-primas de ouro:<\/b><\/strong>\u00a0Para garantir a pureza, voc\u00ea deve limpar e testar a recupera\u00e7\u00e3o primeiro.<\/p>\n<p>&nbsp;<\/p>\n<p><strong><b>Fluxo:<\/b><\/strong>\u00a0Como o b\u00f3rax e o carbonato de s\u00f3dio, podem reduzir o ponto de fus\u00e3o e a oxida\u00e7\u00e3o. De acordo com a quantidade de ouro para determinar a quantidade.<\/p>\n<p>&nbsp;<\/p>\n<p><strong><b>Outras ferramentas:<\/b><\/strong>\u00a0Cadinho de fixa\u00e7\u00e3o, haste de agita\u00e7\u00e3o aquecida uniformemente, suprimentos de prote\u00e7\u00e3o para garantir a seguran\u00e7a, balan\u00e7a eletr\u00f4nica de peso.<\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Preparation_before_melting_gold_in_graphite_crucible\"><\/span>Prepara\u00e7\u00e3o antes da fus\u00e3o do ouro em um cadinho de grafite<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Site_cleaning\"><\/span>Limpeza do local<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Selecione um local bem ventilado, seco e livre de materiais inflam\u00e1veis e explosivos para a opera\u00e7\u00e3o de fus\u00e3o do ouro. Limpe os detritos no local. E certifique-se de que o espa\u00e7o de opera\u00e7\u00e3o seja espa\u00e7oso e limpo, f\u00e1cil de colocar e operar o equipamento. Ao mesmo tempo, certifique-se de que haja boas instala\u00e7\u00f5es de combate a inc\u00eandio ao redor do local para que, em caso de inc\u00eandio, a resposta seja imediata.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Check_the_device\"><\/span>Verifique o dispositivo<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Fa\u00e7a uma inspe\u00e7\u00e3o completa do forno para verificar se o cabo de alimenta\u00e7\u00e3o est\u00e1 danificado. Se a conex\u00e3o est\u00e1 firme e se o corpo do forno est\u00e1 danificado ou deformado. Para verificar se o sistema de controle de temperatura do forno est\u00e1 funcionando normalmente, \u00e9 poss\u00edvel definir uma temperatura mais baixa para a opera\u00e7\u00e3o de teste. Para observar se a exibi\u00e7\u00e3o da temperatura \u00e9 precisa e se o elemento de aquecimento est\u00e1 aquecendo normalmente.<\/p>\n<p>Verifique se o cadinho de grafite apresenta rachaduras, danos e outros defeitos. Se houver algum problema com o cadinho, voc\u00ea deve substitu\u00ed-lo a tempo de evitar vazamentos durante o processo de fus\u00e3o, resultando em perda de ouro e acidentes de seguran\u00e7a. Em seguida, limpe as superf\u00edcies interna e externa do cadinho com um pano limpo para remover a poeira e as impurezas.<\/p>\n<p>Verifique se o alicate do cadinho, a haste de agita\u00e7\u00e3o e outras ferramentas est\u00e3o em boas condi\u00e7\u00f5es. Para garantir que sua opera\u00e7\u00e3o seja flex\u00edvel e possa atender \u00e0s necessidades do processo de fus\u00e3o.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Gold_weighing_and_preparation\"><\/span>Pesagem e prepara\u00e7\u00e3o do ouro<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Use uma balan\u00e7a eletr\u00f4nica para pesar com precis\u00e3o o peso necess\u00e1rio de ouro fundido. Controle com precis\u00e3o a quantidade de ouro usada de acordo com as necessidades de processamento subsequentes. Ao pesar, voc\u00ea deve colocar a balan\u00e7a eletr\u00f4nica em uma mesa horizontal, est\u00e1vel e calibrada. Para garantir a precis\u00e3o dos resultados da pesagem.<\/p>\n<p>Se a mat\u00e9ria-prima de ouro tiver grumos ou formato irregular, voc\u00ea poder\u00e1 cort\u00e1-la ou quebr\u00e1-la adequadamente, conforme necess\u00e1rio. Assim, ser\u00e1 mais f\u00e1cil coloc\u00e1-lo no cadinho de grafite e ele poder\u00e1 ser aquecido de forma mais r\u00e1pida e uniforme durante a fus\u00e3o. Ao mesmo tempo, coloque o fluxo preparado com o ouro em uma determinada propor\u00e7\u00e3o. Assim, voc\u00ea poder\u00e1 adicion\u00e1-lo ao cadinho de grafite ao mesmo tempo durante o carregamento.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Detailed_explanation_of_melting_process_with_graphite_crucible\"><\/span>Explica\u00e7\u00e3o detalhada do processo de fus\u00e3o com cadinho de grafite<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Charge_into_graphite_crucible\"><\/span>Carregar no cadinho de grafite<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Coloque cuidadosamente o ouro e o fluxo preparados no cadinho de grafite. Tenha cuidado para n\u00e3o deixar que o ouro e o fluxo saiam do cadinho para evitar perdas e polui\u00e7\u00e3o. Ao carregar, voc\u00ea pode colocar parte do ouro primeiro e depois adicionar o fluxo. Em seguida, voc\u00ea pode cobrir o ouro restante por cima, o que ajuda o fluxo a desempenhar um papel melhor.<\/p>\n<p>Ap\u00f3s o carregamento, coloque o cadinho de grafite no forno sem problemas. Quando colocado, certifique-se de que o cadinho esteja centralizado no forno para que seja aquecido uniformemente.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Set_furnace_parameters\"><\/span>Definir par\u00e2metros do forno<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>De acordo com o ponto de fus\u00e3o do ouro e a demanda real de fus\u00e3o, defina o procedimento de aquecimento do forno. De modo geral, o ponto de fus\u00e3o do ouro \u00e9 de aproximadamente 1064 \u2103. Por\u00e9m, no processo de fus\u00e3o real, para melhorar a efici\u00eancia da fus\u00e3o, a temperatura geralmente \u00e9 definida um pouco mais alta do que o ponto de fus\u00e3o. Por exemplo, voc\u00ea pode definir a temperatura em cerca de 1.200 \u2103 primeiro e depois ajust\u00e1-la adequadamente de acordo com a situa\u00e7\u00e3o de fus\u00e3o.<\/p>\n<p>Ao mesmo tempo, defina a velocidade de aquecimento. A taxa de aquecimento n\u00e3o deve ser muito r\u00e1pida, caso contr\u00e1rio, poder\u00e1 causar a quebra do cadinho de grafite devido ao calor desigual. E tamb\u00e9m pode agravar a oxida\u00e7\u00e3o da superf\u00edcie do ouro. Em geral, \u00e9 poss\u00edvel controlar a taxa de aquecimento em cerca de 10-20 \u2103 por minuto.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Heat_melting_of_gold_in_graphite_crucible\"><\/span>Fus\u00e3o t\u00e9rmica de ouro em cadinho de grafite<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Ligue o forno e inicie o aquecimento de acordo com os par\u00e2metros definidos. Durante o processo de aquecimento, voc\u00ea deve observar atentamente a opera\u00e7\u00e3o do forno e as mudan\u00e7as de temperatura. Com o aumento da temperatura, o ouro come\u00e7a a amolecer e derreter gradualmente.<\/p>\n<p>Quando a temperatura chegar perto do ponto de fus\u00e3o do ouro, ele come\u00e7ar\u00e1 a parecer l\u00edquido. Nesse momento, a taxa de aquecimento pode ser reduzida adequadamente para permitir que o ouro derreta totalmente. Assegurando que o interior tamb\u00e9m esteja completamente l\u00edquido. Durante o processo de fus\u00e3o, a cor do ouro mudar\u00e1 gradualmente de amarelo dourado para um brilho met\u00e1lico l\u00edquido brilhante.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Key_points_in_the_melting_process_of_gold_in_graphite_crucible\"><\/span>Pontos-chave no processo de fus\u00e3o de ouro em cadinho de grafite<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Temperature_monitoring\"><\/span>Monitoramento de temperatura<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>O monitoramento preciso da temperatura \u00e9 fundamental no processo de fus\u00e3o do ouro. Use o monitoramento em tempo real para realizar o uso do sistema de controle de temperatura do <a href=\"https:\/\/en.wikipedia.org\/wiki\/Furnace_(central_heating)\" target=\"_blank\" rel=\"noopener\">forno<\/a>. E voc\u00ea pode equipar um term\u00f4metro independente como um meio de monitoramento de backup para garantir a precis\u00e3o dos dados de temperatura.<\/p>\n<p>&nbsp;<\/p>\n<p>Preste aten\u00e7\u00e3o \u00e0s mudan\u00e7as no estado do ouro em diferentes temperaturas. Se a temperatura for muito alta, o ouro pode ficar excessivamente oxidado, afetando sua pureza e qualidade. Se a temperatura for muito baixa, pode levar \u00e0 fus\u00e3o incompleta. Quando a anomalia de temperatura for encontrada, voc\u00ea dever\u00e1 ajustar os par\u00e2metros do forno a tempo.<\/p>\n<p>&nbsp;<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Mixing_skills_in_graphite_crucible\"><\/span>Habilidades de mistura em cadinho de grafite<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>No processo de fus\u00e3o do ouro, a agita\u00e7\u00e3o oportuna pode fazer com que o ouro se aque\u00e7a de maneira mais uniforme. Ela pode acelerar o processo de fus\u00e3o e tamb\u00e9m ajudar a reduzir a oxida\u00e7\u00e3o. Quando o ouro come\u00e7ar a derreter, insira gentilmente um bast\u00e3o de agita\u00e7\u00e3o no ouro l\u00edquido e mexa lentamente em uma determinada dire\u00e7\u00e3o.<\/p>\n<p>&nbsp;<\/p>\n<p>Preste aten\u00e7\u00e3o \u00e0 for\u00e7a e \u00e0 profundidade ao mexer. Para evitar a colis\u00e3o violenta entre a haste de agita\u00e7\u00e3o e a parede interna do cadinho de grafite e danificar o cadinho. A frequ\u00eancia da mistura n\u00e3o deve ser muito alta, geralmente a cada poucos minutos para mexer uma vez, cada tempo de agita\u00e7\u00e3o \u00e9 de cerca de 1 a 2 minutos.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Safety_precautions_for_using_graphite_crucible\"><\/span>Precau\u00e7\u00f5es de seguran\u00e7a para o uso do cadinho de grafite<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong><b>Prote\u00e7\u00e3o contra altas temperaturas<\/b><\/strong><\/p>\n<p>Use luvas e \u00f3culos profissionais de prote\u00e7\u00e3o contra altas temperaturas durante a opera\u00e7\u00e3o. Voc\u00ea deve usar luvas para evitar queimaduras e \u00f3culos para se proteger contra radia\u00e7\u00e3o de alta temperatura e respingos de got\u00edculas. Voc\u00ea deve usar o alicate de cadinho para pegar e colocar o cadinho de grafite. E a a\u00e7\u00e3o \u00e9 r\u00e1pida e precisa para reduzir a exposi\u00e7\u00e3o a altas temperaturas.<\/p>\n<p>&nbsp;<\/p>\n<p><strong><b>Uso seguro do fluxo<\/b><\/strong><\/p>\n<p>Ao usar o fluxo, certifique-se de que o local seja bem ventilado, e ventiladores de exaust\u00e3o podem ser instalados para exaurir gases nocivos. Evite o contato com a pele e os olhos. Enx\u00e1gue imediatamente e procure orienta\u00e7\u00e3o m\u00e9dica. Use uma m\u00e1scara e luvas ao pesar.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclus\u00e3o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>O uso de cadinho de grafite para derreter ouro, desde a prepara\u00e7\u00e3o do equipamento de material, prepara\u00e7\u00e3o da fus\u00e3o, controle do processo e aten\u00e7\u00e3o \u00e0 seguran\u00e7a, n\u00e3o deve perder cada elo. A opera\u00e7\u00e3o cuidadosa e a aten\u00e7\u00e3o aos detalhes podem maximizar o valor do ouro.<\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>In metalworking and jewelry manufacturing, melting gold is a key operation. Because of its high temperature resistance and good chemical stability, graphite crucible has become a common container for melting gold. This article will explain in detail the preparation, process and safety of using it to melt gold. 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