{"id":25647,"date":"2026-07-21T15:10:28","date_gmt":"2026-07-21T07:10:28","guid":{"rendered":"https:\/\/www.jxscmachine.com\/?post_type=new&#038;p=25647"},"modified":"2026-07-21T15:10:28","modified_gmt":"2026-07-21T07:10:28","slug":"chemical-phase-analysis-of-manganese-ore-optimizing-processing","status":"publish","type":"new","link":"https:\/\/www.jxscmachine.com\/es\/new\/chemical-phase-analysis-of-manganese-ore-optimizing-processing\/","title":{"rendered":"Chemical Phase Analysis of Manganese Ore: Optimizing Processing"},"content":{"rendered":"<p><strong>Manganese ore,<\/strong> a vital raw material for steel and alloy production, exhibits complex mineralogical diversity that directly impacts its industrial utilization.&nbsp;<em>C<strong>hemical phase analysis of manganese ore<\/strong><\/em>&nbsp;serves as the cornerstone for understanding this complexity, providing precise identification of manganese-bearing minerals and their associated impurities. Unlike traditional elemental analysis, this advanced characterization method reveals the&nbsp;<strong><em>specific chemical forms<\/em><\/strong> of manganese\u2014from carbonates and oxides to silicates\u2014enabling targeted processing strategies. By decoding the ore&#8217;s mineralogical &#8220;fingerprint,&#8221; stakeholders across the mining and metallurgical value chain can make data-driven decisions to optimize beneficiation, reduce energy costs, and maximize resource efficiency.<\/p>\n<p><strong><b>&nbsp;<\/b><\/strong><\/p>\n<h2>Importance of Chemical Phase Analysis of Manganese Ore<\/h2>\n<p>Chemical phase analysis of manganese ore is the process of determining not only the total amount of manganese present but also the specific mineral phases or chemical forms in which it occurs. This analysis is essential because different manganese minerals behave differently during beneficiation, smelting, and chemical processing.<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2026\/07\/Mn-Chemical-Phase-Analysis.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-25648\" src=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2026\/07\/Mn-Chemical-Phase-Analysis.jpg\" alt=\"Mn Chemical Phase Analysis\" width=\"892\" height=\"549\" srcset=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2026\/07\/Mn-Chemical-Phase-Analysis.jpg 892w, https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2026\/07\/Mn-Chemical-Phase-Analysis-768x473.jpg 768w, https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2026\/07\/Mn-Chemical-Phase-Analysis-18x12.jpg 18w\" sizes=\"auto, (max-width: 892px) 100vw, 892px\" \/><\/a><\/p>\n<h3>Importance<\/h3>\n<ol>\n<li><b><\/b><strong><b>Determines Ore Quality<\/b><\/strong><\/li>\n<\/ol>\n<ul>\n<li>Identifies the forms of manganese minerals such as oxides, carbonates, silicates, and hydroxides.<\/li>\n<li>Helps classify the ore as high-grade or low-grade.<\/li>\n<\/ul>\n<ol start=\"2\">\n<li><b><\/b><strong><b>Improves Beneficiation Efficiency<\/b><\/strong><\/li>\n<\/ol>\n<ul>\n<li>Different mineral phases require different beneficiation methods (gravity separation, magnetic separation, flotation, etc.).<\/li>\n<li>Phase analysis helps select the most effective processing technique.<\/li>\n<\/ul>\n<ol start=\"3\">\n<li><b><\/b><strong><b>Optimizes Metallurgical Processing<\/b><\/strong><\/li>\n<\/ol>\n<ul>\n<li>The reducibility of manganese minerals depends on their chemical phase.<\/li>\n<li>Knowing the mineral phases allows engineers to optimize furnace conditions, reduce energy consumption, and improve metal recovery.<\/li>\n<\/ul>\n<ol start=\"4\">\n<li><b><\/b><strong><b>Assesses Impurities<\/b><\/strong><\/li>\n<\/ol>\n<ul>\n<li>Identifies impurity-bearing phases containing <a href=\"https:\/\/www.jxscmachine.com\/es\/nuevo\/tipos-de-mineral-de-hierro\/\">hierro<\/a>, <a href=\"https:\/\/www.jxscmachine.com\/es\/soluciones\/procesamiento-de-silice\/\">s\u00edlice<\/a>, phosphorus, sulfur, and alumina.<\/li>\n<li>Helps predict their impact on ferroalloy and steel production.<\/li>\n<\/ul>\n<ol start=\"5\">\n<li><b><\/b><strong><b>Supports Process Control<\/b><\/strong><\/li>\n<\/ol>\n<ul>\n<li>Provides information for blending ores to maintain consistent feed quality.<\/li>\n<li>Ensures stable production and product quality.<\/li>\n<\/ul>\n<ol start=\"6\">\n<li><b><\/b><strong><b>Improves Economic Value<\/b><\/strong><\/li>\n<\/ol>\n<ul>\n<li>Accurate phase analysis helps determine the commercial value of the ore.<\/li>\n<li>Reduces processing costs by avoiding unsuitable treatment methods.<\/li>\n<\/ul>\n<ol start=\"7\">\n<li><b><\/b><strong><b>Environmental Benefits<\/b><\/strong><\/li>\n<\/ol>\n<ul>\n<li>Helps minimize waste generation by selecting efficient extraction methods.<\/li>\n<li>Supports sustainable utilization of mineral resources.<\/li>\n<\/ul>\n<h3>Common Manganese Mineral Phases<\/h3>\n<ul>\n<li><b><\/b><strong><b>Pyrolusite (MnO\u2082)<\/b><\/strong>\u2013 High-grade oxide ore.<\/li>\n<li><b><\/b><strong><b>Psilomelane<\/b><\/strong>\u2013 Hydrated manganese oxide.<\/li>\n<li><b><\/b><strong><b>Cryptomelane<\/b><\/strong>\u2013 Potassium-bearing manganese oxide.<\/li>\n<li><b><\/b><strong><b>Hausmannite (Mn\u2083O\u2084)<\/b><\/strong>\u2013 Mixed oxide.<\/li>\n<li><b><\/b><strong><b>Rhodochrosite (MnCO\u2083)<\/b><\/strong>\u2013 Carbonate ore.<\/li>\n<li><b><\/b><strong><b>Braunite (Mn\u2082O\u2083\u00b7MnSiO\u2083)<\/b><\/strong>\u2013 Silicate-bearing oxide.<\/li>\n<\/ul>\n<p>Chemical phase analysis is a critical step in the evaluation and utilization of manganese ores. It provides detailed information on manganese and associated impurities, enabling efficient beneficiation, improved metallurgical performance, reduced processing costs, and better resource management. It is therefore indispensable in mining, mineral processing, and metallurgical industries.<\/p>\n<p>&nbsp;<\/p>\n<h2>Chemical Phase Analysis of Manganese Ore<\/h2>\n<p>&nbsp;<\/p>\n<h3>Primary Manganese Ore (Carbonate Type)<\/h3>\n<p><a href=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2026\/07\/Primary-Manganese.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-25649\" src=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2026\/07\/Primary-Manganese.jpg\" alt=\"Primary Manganese\" width=\"733\" height=\"191\" srcset=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2026\/07\/Primary-Manganese.jpg 733w, https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2026\/07\/Primary-Manganese-18x5.jpg 18w\" sizes=\"auto, (max-width: 733px) 100vw, 733px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<h4>Method Overview<\/h4>\n<p>The chemical phase analysis of primary manganese ores (carbonate type) typically focuses on determining three key phases: manganese carbonate minerals, high-valent manganese oxide minerals, and manganese silicate minerals.<\/p>\n<h5><strong>1.&nbsp;Manganese Carbonate Phase Separation<\/strong><\/h5>\n<p>Various selective solvents have been reported for MnCO\u2083 separation, including:<\/p>\n<ul>\n<li><b><\/b><strong><b>Organic acids<\/b><\/strong>: Acetic acid (inadequate extraction efficiency)<\/li>\n<li><b><\/b><strong><b>Inorganic salts<\/b><\/strong>: (NH\u2084)\u2082SO\u2084 and acidified (NH\u2084)\u2082SO\u2084 (low dissolution rates)<\/li>\n<li><b><\/b><strong><b>Mineral acids<\/b><\/strong>: Dilute H\u2082SO\u2084, HClO\u2084 (cause co-dissolution of oxides\/silicates)<\/li>\n<li><b><\/b><strong><b>Complexing agents<\/b><\/strong>: EDTA-NaOH solutions<\/li>\n<\/ul>\n<p><strong><b>Optimal solvent<\/b><\/strong>: 50 g\/L Al(NO\u2083)\u2083 solution (90-100\u00b0C, 30 min) demonstrates:<\/p>\n<ul>\n<li>Quantitative dissolution of MnCO\u2083<\/li>\n<li>&lt;1% dissolution of coexisting MnO\u2082 and manganese silicates<\/li>\n<li>Particularly effective for low-concentration MnCO\u2083 detection<\/li>\n<\/ul>\n<h5><b>2.&nbsp;<\/b><strong><b>Manganese Oxide Phase Separation<\/b><\/strong><\/h5>\n<p>For primary ores, total high-valent oxides (mainly Mn\u00b3\u207a\/Mn\u2074\u207a) are typically determined collectively rather than by sub-phases.<\/p>\n<p><strong><b>Recommended procedure<\/b><\/strong>:<\/p>\n<ul>\n<li>After MnCO\u2083 extraction, treat residue with 50 mL H\u2082SO\u2083 (1+3)<\/li>\n<li>React for 30 min at room temperature<\/li>\n<li>Filter and determine Mn in filtrate as total oxide content<\/li>\n<\/ul>\n<h5><b>3.&nbsp;<\/b><strong><b>Manganese Silicate Phase Separation<\/b><\/strong><\/h5>\n<p>Major silicate minerals include:<\/p>\n<ul>\n<li>Rhodonite (MnSiO\u2083)<\/li>\n<li>Spessartine (Mn\u2083Al\u2082(SiO\u2084)\u2083)<\/li>\n<\/ul>\n<p><strong><b>Extraction methods<\/b><\/strong>:<\/p>\n<ul>\n<li>Standard: Nitric-sulfuric acid digestion followed by H\u2083PO\u2084 dissolution<\/li>\n<li>Alternative: Na\u2082O\u2082 fusion for refractory silicates<\/li>\n<li>Rapid method: HCl-SnCl\u2082 solution pretreatment (selective dissolution of non-silicate phases)<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h4>Analytical Procedure<\/h4>\n<p><b>1. <\/b><strong><b>Carbonate Phase<\/b><\/strong><\/p>\n<p>Weigh 0.1000\u20130.5000 g of the sample and place it in a tapered-mouth beaker; Add 50 mL of a 50 g\/L Al(NO\u2083)\u2083 solution; Boil for 30 minutes with reflux; Filter through medium-speed quantitative paper; Wash with hot water(5 \u00d7 10 mL); and determine the manganese content in the filtrate by AAS\/ICP.<\/p>\n<p><b>2. <\/b><strong><b>Oxide Phase<\/b><\/strong><\/p>\n<p>Add 50 mL of H\u2082SO\u2083 (1+3) to the residue described above, extract for 30 minutes, filter, and wash(5 \u00d7 10 mL 1% H\u2082SO\u2084). The manganese content measured in the filtrate represents the total content of high-valent manganese oxides, such as pyrolusite.<\/p>\n<p><strong><b>3<\/b><\/strong><strong><b>. <\/b><\/strong><strong><b>Silicate Phase<\/b><\/strong><\/p>\n<p>After treating the residue described above with a mixture of nitric and sulfuric acids and evaporating it to near dryness, add 20 mL of H\u2083PO\u2084 to dissolve the manganese silicate, then determine the content using standard methods. The result represents the manganese content of the manganese silicate. (If H\u2083PO\u2084 fails to completely dissolve the manganese silicate mineral, the residue may be transferred to an aluminum crucible, fused with Na\u2082O\u2082, and analyzed using standard methods.)<\/p>\n<p>&nbsp;<\/p>\n<h3>Oxidized Manganese Ore Analysis<\/h3>\n<p><a href=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2026\/07\/Oxidized-Manganese.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-25650\" src=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2026\/07\/Oxidized-Manganese.jpg\" alt=\"Oxidized Manganese\" width=\"735\" height=\"187\" srcset=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2026\/07\/Oxidized-Manganese.jpg 735w, https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2026\/07\/Oxidized-Manganese-18x5.jpg 18w\" sizes=\"auto, (max-width: 735px) 100vw, 735px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<h4>Method Overview<\/h4>\n<p>In addition to determining manganese carbonate (MnCO\u2083) and manganese silicate, it is generally necessary to determine the content of&nbsp;pyrolusite (MnO\u2082) &nbsp;and other manganese oxide minerals (Manganite MnO(OH)&nbsp;and Braunite&nbsp;Mn7SiO12) in manganese oxide ores.<\/p>\n<p>&nbsp;<\/p>\n<h4>Phase Separation Techniques<\/h4>\n<h5><strong><b>Mn\u00b3\u207a\/Mn\u2074\u207a Differentiation<\/b><\/strong><\/h5>\n<p>Two established approaches:<\/p>\n<p><strong><b>A. Fluoride Method (H\u2082SO\u2084-HF-KF system)<\/b><\/strong>:<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li>Composition: 50 mL 5% H\u2082SO\u2084 + 2 mL HF + 2 g KF<\/li>\n<li>Conditions: 95\u00b0C water bath for 30 min (plasticware required)<\/li>\n<li>Selectively extracts:<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<ul>\n<li>Manganite (\u03b3-MnOOH)<\/li>\n<li>Bixbyite (Mn\u2082O\u2083)<\/li>\n<li>Hausmannite (Mn\u2083O\u2084)<\/li>\n<\/ul>\n<p><strong><b>B. Nitric Acid Method<\/b><\/strong>:<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li>1% HNO\u2083 at 95\u00b0C for 90 min<\/li>\n<li>Dissolves exactly 50% of Mn\u2082O\u2083 content<\/li>\n<li>Remaining Mn\u2082O\u2083 converts to MnO\u2082<\/li>\n<li>Calculate original Mn\u00b3\u207a content as 2\u00d7measured value<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h5><strong>Calculating Method<\/strong><\/h5>\n<p>Based on oxidation potential difference:<\/p>\n<ul>\n<li>Mn\u2074\u207a + 2e\u207b \u2192 Mn\u00b2\u207a (E\u00b0=1.28V)<\/li>\n<li>Mn\u00b3\u207a + e\u207b \u2192 Mn\u00b2\u207a (E\u00b0=1.51V) By measuring both:<\/li>\n<\/ul>\n<ol>\n<li>Total oxidizable Mn (via KMnO\u2084 titration)<\/li>\n<li>Total high-valent Mn (by complete dissolution). Solve simultaneous equations for Mn\u00b3\u207a\/Mn\u2074\u207a ratios<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<h4>Analytical Procedure<\/h4>\n<h5><strong><b>1. <\/b><\/strong><strong><b>Carbonate Phase<\/b><\/strong><\/h5>\n<p>Same as primary manganese&nbsp;ore procedure.<\/p>\n<h5><strong><b>2. Determination of Manganite and <\/b><\/strong><strong><b>Braunite<\/b><\/strong><\/h5>\n<p>There are two methods for this determination:<br \/>\nFirst, in the residue after separation of carbonate manganese, add 50 mL of 5% H2SO4, 2 mL HF, and 2 g KF (pre-mixed solution), and leach in a boiling water bath for 30 minutes. Filter through a plastic funnel, wash, and determine the combined content of manganite and braunite in the filtrate.<\/p>\n<p>Second, in the residue after separation of carbonate manganese, add 60 mL of 1% HNO3 and leach in a boiling water bath for 1.5 hours. Filter while hot, wash thoroughly, and determine the manganese content of manganite and braunite in the filtrate. Multiply the result by 2 to obtain the total content.<\/p>\n<h5><strong><b>3. <\/b><\/strong><strong><b>Determination of Pyrolusite<\/b><\/strong><\/h5>\n<p>In the first residue after separation of manganite and braunite, add 50 mL of H2SO3 (1+2), leach for 1 hour, filter, wash, and determine the pyrolusite content in the filtrate. Alternatively, for the second residue after separation of manganite and braunite (containing pyrolusite and half of the manganese content from manganite and braunite), leach with H2SO3 (1+2), filter, and separate. Subtract half of the manganese content of manganite and braunite from the total manganese content measured in the filtrate to obtain the manganese content of pyrolusite.<\/p>\n<h5><strong><b>4. <\/b><\/strong><strong><b>Determination of <\/b><\/strong><strong><b>manganese silicate<\/b><\/strong><\/h5>\n<p>The method for determining manganosilicate minerals in general manganese oxide ores is the same as for primary manganese ores, i.e., in the residue after H2SO3 leaching. However, if the sample contains Mn3+ isomorphic substitution for Fe3+ (i.e., manganese-bearing hematite or manganese-bearing limonite), H2SO3 cannot leach it. In such cases, after leaching pyrolusite, manganite, and braunite with H2SO3, an additional step of leaching manganese-bearing hematite or limonite with HCl is required (add 40 mL of HCl (1+1) to the residue from H2SO3 leaching, simmer for 30 minutes, filter, and wash). Determine the manganosilicate content in the residual residue.<\/p>\n<p>When the sample contains manganese-bearing hematite, limonite, ferro-manganese ores, or manganese spinel (iron-manganese oxides), a separate portion of the sample can be taken and leached with HCl-SnCl2 solution to remove all other manganese-bearing minerals except manganosilicate:&nbsp;<\/p>\n<p>Weigh 0.1000 g of the sample (if the carbonate manganese content is high and manganosilicate content is low, the sample should be pre-calcined at 500\u00b0C for 2 hours), add 25 mL of HCl, and dropwise add 100 g\/L SnCl2 solution while gently shaking the beaker to dissolve black minerals until the solution becomes colorless and remains so for 10 minutes. During this period, if the solution turns dark green, add more SnCl2 solution dropwise with shaking until it becomes colorless again. Add 100 mL of water, filter immediately, wash, and determine the manganosilicate content in the residue.<\/p>\n<p>&nbsp;<\/p>\n<h2>JXSC Analytical Service Highlights<\/h2>\n<p><strong><b>Dual-Phase Identification Package:<\/b><\/strong><\/p>\n<ul>\n<li>Combines chemical sequential extraction with automated mineralogy (MLA\/QEMSCAN)<\/li>\n<li>Provides phase-specific liberation data for process optimization<\/li>\n<li>Delivers comprehensive report with:<\/li>\n<\/ul>\n<ul>\n<li>Phase abundance distribution<\/li>\n<li>Elemental deportment analysis<\/li>\n<li>Processability index calculation<\/li>\n<\/ul>\n<p><strong><b>Technical Parameters:<\/b><\/strong><\/p>\n<table border=\"1\" width=\"100%\">\n<tbody>\n<tr>\n<td style=\"text-align: center;\" width=\"43.9200%\"><strong><b>Parameter<\/b><\/strong><\/td>\n<td style=\"text-align: center;\" width=\"27.3000%\"><strong><b>Primary Ore<\/b><\/strong><\/td>\n<td style=\"text-align: center;\" width=\"28.7600%\"><strong><b>Oxidized Ore<\/b><\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"43.9200%\">Analysis Depth<\/td>\n<td style=\"text-align: center;\" width=\"27.3000%\">50-100\u03bcm<\/td>\n<td style=\"text-align: center;\" width=\"28.7600%\">Surface-nano<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"43.9200%\">Phase Resolution<\/td>\n<td style=\"text-align: center;\" width=\"27.3000%\">\u22650.5wt%<\/td>\n<td style=\"text-align: center;\" width=\"28.7600%\">\u22650.2wt%<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"43.9200%\">Mn Recovery Accuracy<\/td>\n<td style=\"text-align: center;\" width=\"27.3000%\">\u00b10.8%<\/td>\n<td style=\"text-align: center;\" width=\"28.7600%\">\u00b10.5%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<h2>Summary and Outlook<\/h2>\n<p>The imperative for&nbsp;chemical phase analysis of <a href=\"https:\/\/www.jxscmachine.com\/es\/soluciones\/tratamiento-del-manganeso\/\">mineral de manganeso<\/a>&nbsp;grows increasingly evident as industries face stricter quality requirements and sustainability mandates. This analytical approach transforms raw ore data into actionable insights, bridging the gap between geological deposits and metallurgical performance. Future advancements in automated mineralogy (e.g., MLA\/QEMSCAN integration) promise even higher resolution in phase identification, further enhancing process economics. For mining operators and metallurgists alike, investing in robust phase analysis protocols isn\u2019t merely an option\u2014it\u2019s a strategic necessity to ensure competitive advantage, minimize environmental footprint, and unlock the full potential of manganese resources in an evolving global market.<\/p>","protected":false},"excerpt":{"rendered":"<p>Manganese ore, a vital raw material for steel and alloy production, exhibits complex mineralogical diversity that directly impacts its industrial utilization.&nbsp;Chemical phase analysis of manganese ore&nbsp;serves as the cornerstone for understanding this complexity, providing precise identification of manganese-bearing minerals and their associated impurities. Unlike traditional elemental analysis, this advanced characterization method reveals the&nbsp;specific chemical forms &hellip; <a href=\"https:\/\/www.jxscmachine.com\/es\/new\/chemical-phase-analysis-of-manganese-ore-optimizing-processing\/\" class=\"more-link\">Sigue leyendo <span class=\"screen-reader-text\">Chemical Phase Analysis of Manganese Ore: Optimizing Processing<\/span><\/a><\/p>","protected":false},"author":1,"featured_media":25648,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"open","template":"","format":"standard","meta":{"_acf_changed":false,"ngg_post_thumbnail":0,"footnotes":""},"categories":[],"tags":[],"class_list":["post-25647","new","type-new","status-publish","format-standard","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Chemical Phase Analysis of Manganese Ore - JXSC Machine<\/title>\n<meta name=\"description\" content=\"Manganese ore phase analysis deciphers ore composition, pinpointing key minerals and impurities for optimized processing.\" \/>\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\/es\/nuevo\/chemical-phase-analysis-of-manganese-ore-optimizing-processing\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Chemical Phase Analysis of Manganese Ore - 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