{"id":2809,"date":"2026-07-24T00:23:44","date_gmt":"2026-07-24T03:23:44","guid":{"rendered":"https:\/\/solucoesemferroligas.com.br\/?p=2809"},"modified":"2026-07-31T14:07:23","modified_gmt":"2026-07-31T17:07:23","slug":"uso-de-sinter-na-producao-de-ferroligas-de-manganes-em-fornos-eletricos","status":"publish","type":"post","link":"https:\/\/solucoesemferroligas.com.br\/en\/uso-de-sinter-na-producao-de-ferroligas-de-manganes-em-fornos-eletricos\/","title":{"rendered":"Use of Sinter in Manganese Ferroalloy Production in Electric Furnaces"},"content":{"rendered":"<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1248px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-blend:overlay;--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-1 fusion-sep-none fusion-title-text fusion-title-size-two\" style=\"--awb-margin-top-small:10px;--awb-margin-right-small:0px;--awb-margin-bottom-small:10px;--awb-margin-left-small:0px;--awb-font-size:34px;\"><h2 class=\"fusion-title-heading title-heading-left\" style=\"margin:0;text-transform:var(--awb-typography4-text-transform);font-size:1em;\">Sinteriza\u00e7\u00e3o de finos de mangan\u00eas: como reduzir custos e consumo de combust\u00edvel s\u00f3lido<\/h2><\/div><div class=\"fusion-text fusion-text-1\" style=\"--awb-font-size:var(--awb-typography2-font-size);--awb-line-height:var(--awb-typography2-line-height);--awb-letter-spacing:var(--awb-typography2-letter-spacing);--awb-text-transform:var(--awb-typography2-text-transform);--awb-text-font-family:var(--awb-typography2-font-family);--awb-text-font-weight:var(--awb-typography2-font-weight);--awb-text-font-style:var(--awb-typography2-font-style);\"><p>Sintering of ore fines reduces costs, improves energy efficiency, and increases operational safety in submerged arc furnaces.<\/p>\n<\/div><div class=\"fusion-text fusion-text-2\"><p class=\"ds-markdown-paragraph\"><span class=\"\">In ore beneficiation, a large quantity of fines (fraction smaller than 10 mm) is generated. These cannot be used directly in furnaces due to permeability issues, dust entrainment, and low reactivity.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">To economically valorize this material, different agglomeration methods can be employed, among which sintering stands out.<\/span><\/p>\n<\/div><div class=\"fusion-title title fusion-title-2 fusion-sep-none fusion-title-text fusion-title-size-two\" style=\"--awb-margin-top-small:10px;--awb-margin-right-small:0px;--awb-margin-bottom-small:10px;--awb-margin-left-small:0px;--awb-font-size:34px;\"><h2 class=\"fusion-title-heading title-heading-left\" style=\"margin:0;text-transform:var(--awb-typography4-text-transform);font-size:1em;\">What is sintering?<\/h2><\/div><div class=\"fusion-text fusion-text-3\"><p class=\"ds-markdown-paragraph\"><span class=\"\">The sintering process consists of the thermal agglomeration of ore fines \u2014 focusing on manganese fines (sinter-feed) \u2014 mixed with other inputs such as:<\/span><\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Coke fines (fuel);<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Limestone (flux);<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Return material.<\/span><\/p>\n<\/li>\n<\/ul>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">The final product is a porous material with a structure suitable for blast furnaces and electric furnaces. It also exhibits excellent reducibility due to the partial pre-reduction of manganese oxides.<\/span><\/p>\n<\/div><div class=\"fusion-title title fusion-title-3 fusion-sep-none fusion-title-text fusion-title-size-two\" style=\"--awb-margin-top-small:10px;--awb-margin-right-small:0px;--awb-margin-bottom-small:10px;--awb-margin-left-small:0px;--awb-font-size:34px;\"><h2 class=\"fusion-title-heading title-heading-left\" style=\"margin:0;text-transform:var(--awb-typography4-text-transform);font-size:1em;\">The impact of variable costs<\/h2><\/div><div class=\"fusion-text fusion-text-4\"><p class=\"ds-markdown-paragraph\"><span class=\"\">In manganese ferroalloy production, from the variable cost perspective, the approximate distribution is as follows:<\/span><\/p>\n<div class=\"ds-scroll-area ds-scroll-area--show-on-focus-within ds-scroll-area--enabled _1210dd7 c03cafe9\">\n<div class=\"ds-scroll-area__gutters\">\n<div class=\"ds-scroll-area__vertical-gutter\"><\/div>\n<\/div>\n<table>\n<thead>\n<tr>\n<th style=\"text-align: left;\"><span class=\"\">Input<\/span><\/th>\n<th><span class=\"\">  Share<\/span><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><span class=\"\">Ores  <\/span><\/td>\n<td><span class=\"\">  45%<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">Energy  <\/span><\/td>\n<td><span class=\"\">  25%<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">Reductants (coke)  <\/span><\/td>\n<td><span class=\"\">  25%<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">Other inputs  <\/span><\/td>\n<td><span class=\"\">  5%<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p class=\"ds-markdown-paragraph\"><span style=\"letter-spacing: 0.24px; background-color: rgba(0, 0, 0, 0);\"><br \/>Therefore, proper electric furnace performance is extremely important to keep these costs under control and ensure company competitiveness and profitability.<\/span><\/p>\n<\/div><div class=\"fusion-title title fusion-title-4 fusion-sep-none fusion-title-text fusion-title-size-two\" style=\"--awb-margin-top-small:10px;--awb-margin-right-small:0px;--awb-margin-bottom-small:10px;--awb-margin-left-small:0px;--awb-font-size:34px;\"><h2 class=\"fusion-title-heading title-heading-left\" style=\"margin:0;text-transform:var(--awb-typography4-text-transform);font-size:1em;\">Benefits of using sinter in electric furnaces<br \/><\/h2><\/div><div class=\"fusion-text fusion-text-5\"><p class=\"ds-markdown-paragraph\"><span class=\"\">Considering these aspects, the use of sinter in manganese ferroalloy production in submerged arc furnaces can bring significant operational benefits:<\/span><\/p>\n<h3><span class=\"\">1. Improved burden resistivity<\/span><\/h3>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">In submerged arc furnaces, electrode positioning is critical for proper operation. The presence of sinter in the burden increases the electrical resistivity of the bed, favoring proper electrode immersion and promoting greater heat transfer through ohmic resistance, leading to better energy utilization.<\/span><\/p>\n<h3><span class=\"\">2. Reduction of \"blows\" and increased operational safety<\/span><\/h3>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">The improved burden permeability, provided by the sinter's particle size and porosity, allows process gases to percolate through the mass easily, preventing the formation of gas \"pockets\" that, when suddenly released, cause undesirable \"blows.\" This results in furnace stability and, most importantly, operational safety.<\/span><\/p>\n<h3><span class=\"\">3. Reduced coke consumption<\/span><\/h3>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Sinter, being a pre-reduced material (with lower chemically bound oxygen content), reduces the coke demand for the manganese oxide reduction reaction, decreasing the amount of reductant required per ton of alloy produced.<\/span><\/p>\n<h3><span class=\"\">4. Reduced specific energy consumption (MWh\/t)<\/span><\/h3>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">The combination of the above factors \u2014 better resistivity, greater permeability, and fewer endothermic reduction reactions \u2014 results in a thermally stable operation with less heat loss through gases and reduced exposure time of the burden to electrical power, thus lowering specific energy consumption per ton of ferroalloy produced.<\/span><\/p>\n<\/div><div class=\"fusion-title title fusion-title-5 fusion-sep-none fusion-title-text fusion-title-size-two\" style=\"--awb-margin-top-small:10px;--awb-margin-right-small:0px;--awb-margin-bottom-small:10px;--awb-margin-left-small:0px;--awb-font-size:34px;\"><h2 class=\"fusion-title-heading title-heading-left\" style=\"margin:0;text-transform:var(--awb-typography4-text-transform);font-size:1em;\">Conclusion<\/h2><\/div><div class=\"fusion-text fusion-text-6\"><p class=\"ds-markdown-paragraph\"><span class=\"\">Manganese ore fines sintering proves to be not only a viable solution for utilizing tailings and previously discarded materials but also a technically advantageous strategy for ferroalloy production in submerged arc furnaces.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">The benefits range from improving furnace electrical and thermal parameters to reducing critical input consumption, such as coke and electricity, directly impacting variable costs, which represent the largest share of operational expenses.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Additionally, gains in operational stability and safety reinforce the positive nature of using sinter in the operation.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Therefore, investing in sinter quality control and its proper burden dosing is a promising path to:<\/span><\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Increase production efficiency;<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Reduce emissions (through lower use of fossil reductants);<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Improve the economic and environmental sustainability of the manganese alloy production process.<\/span><\/p>\n<\/li>\n<\/ul>\n<\/div><div class=\"fusion-text fusion-text-7\"><p>Enjoyed this content? <a href=\"https:\/\/api.whatsapp.com\/send\/?phone=5531984756585&amp;text=Ol%C3%A1%21+Vim+do+site+Solu%C3%A7%C3%B5es+em+Ferroligas+e+gostaria+de+tirar+d%C3%BAvidas.&amp;type=phone_number&amp;app_absent=0\" target=\"_blank\" rel=\"noopener noreferrer\">Contact us by clicking here<\/a>See you next time!<\/p>\n<\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":2810,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[28],"tags":[],"class_list":["post-2809","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tendencias-de-mercado"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Uso de s\u00ednter na produ\u00e7\u00e3o de ferroligas em fornos el\u00e9tricos<\/title>\n<meta name=\"description\" content=\"A sinteriza\u00e7\u00e3o de finos de min\u00e9rio reduz custos, melhora a efici\u00eancia energ\u00e9tica e aumenta a seguran\u00e7a operacional em fornos el\u00e9tricos a arco\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" 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