{"id":16053,"date":"2025-10-11T07:39:43","date_gmt":"2025-10-11T07:39:43","guid":{"rendered":"https:\/\/jda.jhy.mybluehost.me\/?p=16053"},"modified":"2026-02-05T06:13:08","modified_gmt":"2026-02-05T06:13:08","slug":"how-to-evaluate-the-quality-of-ore-pellets-analysis-of-key-indicators","status":"publish","type":"post","link":"https:\/\/www.jianjiebinder.com\/ru\/how-to-evaluate-the-quality-of-ore-pellets-analysis-of-key-indicators\/","title":{"rendered":"\u041a\u0430\u043a \u043e\u0446\u0435\u043d\u0438\u0442\u044c \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u043e \u0440\u0443\u0434\u043d\u044b\u0445 \u043e\u043a\u0430\u0442\u044b\u0448\u0435\u0439? \u0410\u043d\u0430\u043b\u0438\u0437 \u043a\u043b\u044e\u0447\u0435\u0432\u044b\u0445 \u043f\u043e\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u0435\u0439"},"content":{"rendered":"<nav class=\"wp-block-stackable-table-of-contents stk-block-table-of-contents stk-block stk-e1db7fc stk-block-background\" data-block-id=\"e1db7fc\"><style>.stk-e1db7fc .stk-table-of-contents__title{font-size:var(--stk--preset--font-size--bbe-title-3, 36px) !important;}.stk-e1db7fc {background-color:#f1f5f9 !important;}.stk-e1db7fc:before{background-color:#f1f5f9 !important;}@media screen and (max-width: 1023px){.stk-e1db7fc .stk-table-of-contents__title{font-size:var(--stk--preset--font-size--bbe-title-3, 36px) !important;}}<\/style><p class=\"stk-table-of-contents__title\">\u041e\u0433\u043b\u0430\u0432\u043b\u0435\u043d\u0438\u0435<\/p><ul class=\"stk-table-of-contents__table\"><li><a href=\"#why-is-pellet-quality-evaluation-important\">Why is Pellet Quality Evaluation Important?<\/a><\/li><li><a href=\"#key-quality-indicators\">Key Quality Indicators<\/a><\/li><li><a href=\"#common-international-standards-for-iron-ore-pellets\">Common International Standards for Iron Ore Pellets<\/a><\/li><li><a href=\"#conclusion\">\u0417\u0430\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435<\/a><\/li><\/ul><\/nav>\n\n\n\n<p data-block-type=\"core\"><a href=\"file:\/\/\/C:\/Users\/Administrator\/Documents\/WeChat%20Files\/wxid_lv195fwwzt4a22\/FileStorage\/File\/2025-03\/If%20you%20are%20interested%20in%20our%20products%20and%20service,%20please%20feel%20free%20to%20contact%20us!\">\u0416\u0435\u043b\u0435\u0437\u043e\u0440\u0443\u0434\u043d\u044b\u0435 \u043e\u043a\u0430\u0442\u044b\u0448\u0438<\/a>&nbsp;are a crucial component in steel production. As the primary input for blast furnaces, the quality of these pellets plays a significant role in the efficiency and performance of the overall production process. Assessing pellet quality is essential for ensuring optimal productivity and minimizing costs. This article will explore key quality indicators for pelletized iron ore, including cold compression strength, reducibility and other important factors.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\" data-block-type=\"core\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"557\" src=\"https:\/\/www.jianjiebinder.com\/wp-content\/uploads\/2025\/09\/\u7403\u56e2\u6e7f\u7403-1024x557.png\" alt=\"Dosis pengikat yang berlebihan, meningkatkan biaya produksi.\" class=\"wp-image-18586\" style=\"width:500px\" srcset=\"https:\/\/www.jianjiebinder.com\/wp-content\/uploads\/2025\/09\/\u7403\u56e2\u6e7f\u7403-1024x557.png 1024w, https:\/\/www.jianjiebinder.com\/wp-content\/uploads\/2025\/09\/\u7403\u56e2\u6e7f\u7403-300x163.png 300w, https:\/\/www.jianjiebinder.com\/wp-content\/uploads\/2025\/09\/\u7403\u56e2\u6e7f\u7403-768x417.png 768w, https:\/\/www.jianjiebinder.com\/wp-content\/uploads\/2025\/09\/\u7403\u56e2\u6e7f\u7403-1536x835.png 1536w, https:\/\/www.jianjiebinder.com\/wp-content\/uploads\/2025\/09\/\u7403\u56e2\u6e7f\u7403-18x10.png 18w, https:\/\/www.jianjiebinder.com\/wp-content\/uploads\/2025\/09\/\u7403\u56e2\u6e7f\u7403.png 1779w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p data-block-type=\"core\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"why-is-pellet-quality-evaluation-important\" data-block-type=\"core\"><strong>Why is Pellet Quality Evaluation Important?<\/strong><\/h2>\n\n\n\n<p data-block-type=\"core\"><strong>Impact on Production Process<\/strong><\/p>\n\n\n\n<p data-block-type=\"core\">High-quality pellets improve the efficiency of steel production. Well-formed and durable pellets maintain structural integrity during handling and transport, leading to fewer disruptions in the furnace. Efficient pelletization ensures optimal iron ore reduction, leading to enhanced productivity.<\/p>\n\n\n\n<p data-block-type=\"core\"><strong>Impact on Final Product<\/strong><\/p>\n\n\n\n<p data-block-type=\"core\">The quality of pellets directly influences the steel product&#8217;s performance. Pellets with superior physical and metallurgical properties result in higher-quality steel with better strength, durability and consistency.<\/p>\n\n\n\n<p data-block-type=\"core\"><strong>Economic Impact<\/strong><\/p>\n\n\n\n<p data-block-type=\"core\">High-quality pellets reduce the overall production cost. By improving the efficiency of the reduction process, fewer pellets are needed to achieve the desired output, lowering material and energy costs.<\/p>\n\n\n\n<p data-block-type=\"core\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"key-quality-indicators\" data-block-type=\"core\"><strong>Key Quality Indicators<\/strong><\/h2>\n\n\n\n<p data-block-type=\"core\">Pellet quality is determined by several factors, including physical, metallurgical and chemical properties. Below are some of the critical quality indicators:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" data-block-type=\"core\"><strong>Physical Performance Indicators<\/strong><\/h3>\n\n\n\n<p data-block-type=\"core\"><strong>Cold Compression Strength<\/strong><\/p>\n\n\n\n<p data-block-type=\"core\">This refers to the ability of pellets to resist crushing under external force at room temperature. High cold compression strength ensures that pellets can withstand the harsh mechanical effects encountered during transport and handling. A typical target for high-quality pellets is a cold compression strength of&nbsp;<strong>at least 2500 N per pellet.<\/strong><\/p>\n\n\n\n<p data-block-type=\"core\"><strong>Wet Strength<\/strong><\/p>\n\n\n\n<p data-block-type=\"core\">Wet strength indicates the durability of green pellets (raw, unbaked pellets) under moist conditions. Testing typically involves dropping pellets from&nbsp;<strong>\u0432\u044b\u0441\u043e\u0442\u0430 0,5 \u043c\u0435\u0442\u0440\u0430<\/strong>&nbsp;multiple times without breaking. High wet strength is crucial for ensuring pellet integrity before the baking process.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\" data-block-type=\"core\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"571\" src=\"https:\/\/www.jianjiebinder.com\/wp-content\/uploads\/2025\/10\/fall-test-1024x571.png\" alt=\"Fall test\" class=\"wp-image-18806\" style=\"width:500px\" srcset=\"https:\/\/www.jianjiebinder.com\/wp-content\/uploads\/2025\/10\/fall-test-1024x571.png 1024w, https:\/\/www.jianjiebinder.com\/wp-content\/uploads\/2025\/10\/fall-test-300x167.png 300w, https:\/\/www.jianjiebinder.com\/wp-content\/uploads\/2025\/10\/fall-test-768x428.png 768w, https:\/\/www.jianjiebinder.com\/wp-content\/uploads\/2025\/10\/fall-test-18x10.png 18w, https:\/\/www.jianjiebinder.com\/wp-content\/uploads\/2025\/10\/fall-test.png 1098w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center\" data-block-type=\"core\">fall test<\/p>\n\n\n\n<p data-block-type=\"core\"><strong>Dry Strength<\/strong><\/p>\n\n\n\n<p data-block-type=\"core\">This indicator measures the pellet&#8217;s ability to withstand heat without cracking during the baking process. Dry strength is vital for maintaining pellet structure at high temperatures.<\/p>\n\n\n\n<p data-block-type=\"core\"><strong>Thermal Strength<\/strong><\/p>\n\n\n\n<p data-block-type=\"core\">At temperatures between 1000-1100\u00b0C, thermal strength is tested to ensure that pellets do not crack or break under heat. High thermal strength guarantees that pellets will maintain their structure throughout the reduction process.<\/p>\n\n\n\n<p data-block-type=\"core\"><strong>\u0420\u0430\u0437\u043c\u0435\u0440 \u0447\u0430\u0441\u0442\u0438\u0446<\/strong><\/p>\n\n\n\n<p data-block-type=\"core\">A uniform particle size distribution improves pellet permeability and bonding agent performance. Consistent particle size results in better pellet formation and stability.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\" data-block-type=\"core\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"586\" src=\"https:\/\/www.jianjiebinder.com\/wp-content\/uploads\/2025\/10\/Select-qualified-pellets-1024x586.png\" alt=\"Select qualified pellets\" class=\"wp-image-18807\" style=\"width:500px\" srcset=\"https:\/\/www.jianjiebinder.com\/wp-content\/uploads\/2025\/10\/Select-qualified-pellets-1024x586.png 1024w, https:\/\/www.jianjiebinder.com\/wp-content\/uploads\/2025\/10\/Select-qualified-pellets-300x172.png 300w, https:\/\/www.jianjiebinder.com\/wp-content\/uploads\/2025\/10\/Select-qualified-pellets-768x439.png 768w, https:\/\/www.jianjiebinder.com\/wp-content\/uploads\/2025\/10\/Select-qualified-pellets-18x10.png 18w, https:\/\/www.jianjiebinder.com\/wp-content\/uploads\/2025\/10\/Select-qualified-pellets.png 1049w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center\" data-block-type=\"core\">Select qualified pellets<\/p>\n\n\n\n<p data-block-type=\"core\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" data-block-type=\"core\"><strong>Metallurgical Performance Indicators<\/strong><\/h3>\n\n\n\n<p data-block-type=\"core\"><strong>Reducibility Index (RI)<\/strong><\/p>\n\n\n\n<p data-block-type=\"core\">The reducibility index measures how well iron ore pellets reduce during the smelting process. High reducibility is crucial for ensuring effective gas flow and heat transfer in the furnace, leading to higher reduction efficiency.<\/p>\n\n\n\n<p data-block-type=\"core\"><strong>Low-Temperature Reducibility Index (RDI)<\/strong><\/p>\n\n\n\n<p data-block-type=\"core\">This index assesses pellet behavior under lower temperatures. It is essential for determining how pellets perform in the furnace&#8217;s upper zone, where temperature and chemical reactions may vary.<\/p>\n\n\n\n<p data-block-type=\"core\"><strong>Reduction Expansion Index (RSI)<\/strong><\/p>\n\n\n\n<p data-block-type=\"core\">RSI measures the volume change of pellets after reduction in a CO and N2 atmosphere. High RSI ensures good pellet performance in the blast furnace, contributing to effective gas permeability.<\/p>\n\n\n\n<p data-block-type=\"core\"><strong>Porosity<\/strong><\/p>\n\n\n\n<p data-block-type=\"core\">Porosity refers to the volume of voids within pellets, influencing the efficiency of gas flow during reduction. Pellets with optimal porosity enhance furnace productivity by improving gas contact with the iron ore.<\/p>\n\n\n\n<p data-block-type=\"core\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" data-block-type=\"core\"><strong>Chemical Composition Indicators<\/strong><\/h3>\n\n\n\n<p data-block-type=\"core\"><strong>Iron Content<\/strong><\/p>\n\n\n\n<p data-block-type=\"core\">Higher iron content directly improves pellet quality. Iron-rich pellets are more effective in the reduction process, yielding a better steel product.<\/p>\n\n\n\n<p data-block-type=\"core\"><strong>Silicon Dioxide (SiO\u2082) Content<\/strong><\/p>\n\n\n\n<p data-block-type=\"core\">SiO\u2082 plays a critical role in the pelletization process. When SiO\u2082 content is below 9.23%, it helps to form a liquid phase during sintering, improving pellet bonding strength. However, high SiO\u2082 levels may reduce pellet strength and cause unwanted slag formation.<\/p>\n\n\n\n<p data-block-type=\"core\"><strong>Sulfur Content<\/strong><\/p>\n\n\n\n<p data-block-type=\"core\">Excess sulfur can create pores in pellets, weakening their structure. Moreover, sulfur releases harmful gases, which negatively impact the environment and furnace efficiency.<\/p>\n\n\n\n<p data-block-type=\"core\"><strong>Phosphorus Content<\/strong><\/p>\n\n\n\n<p data-block-type=\"core\">High phosphorus levels in pellets lead to brittle steel, compromising the strength and quality of the final steel product.<\/p>\n\n\n\n<p data-block-type=\"core\"><strong>Particle Size Distribution<\/strong><\/p>\n\n\n\n<p data-block-type=\"core\">Pellet size should meet specified requirements. Too large or too small particles affect pellet performance, leading to inefficiencies in the furnace.<\/p>\n\n\n\n<p data-block-type=\"core\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"common-international-standards-for-iron-ore-pellets\" data-block-type=\"core\"><strong>Common International Standards for Iron Ore Pellets<\/strong><\/h2>\n\n\n\n<p data-block-type=\"core\">Moreovber, to evaluate and improve pelletizing quality, it&#8217;s important to understand the internationally recognized standards that define technical requirements for iron ore pellets. These standards vary by country and application (e.g., blast furnace vs. direct reduction), but they generally assess key physical and chemical properties.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" data-block-type=\"core\"><strong>1. ISO International Standards<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\" data-block-type=\"core\">\n<li data-block-type=\"core\"><strong>ISO 4700:2015<\/strong>&nbsp;\u2014 Iron ore pellets for blast furnace and direct reduction feedstocks \u2014 Determination of the crushing strength.<br>Measures the compressive strength of iron ore pellets.<\/li>\n\n\n\n<li data-block-type=\"core\"><strong>ISO 3271:2021&nbsp;<\/strong>\u2014 Iron ores for blast furnace and direct reduction feedstocks \u2014 Determination of tumble and abrasion indices.<br>Evaluates resistance to degradation due to handling, transportation, and charging.<\/li>\n\n\n\n<li data-block-type=\"core\"><strong>ISO 4695:2021&nbsp;<\/strong>\u2014 Reduction under load (RUL) test<br>Assesses the mechanical performance of pellets during reduction under load conditions.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" data-block-type=\"core\"><strong>2. Chinese National Standard (GB\/T)<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\" data-block-type=\"core\">\n<li data-block-type=\"core\"><strong>GB\/T 14201-2021&nbsp;<\/strong>\u2014 Iron ore pellets for blast furnace use<br>Specifies requirements for pellet size, strength, and chemical composition.<br>Applicable to both acidic and basic pellets used in blast furnace ironmaking.Key technical indicators include:\n<ul class=\"wp-block-list\" data-block-type=\"core\">\n<li data-block-type=\"core\"><strong>Particle size:<\/strong>&nbsp;90% within 9\u201316 mm<\/li>\n\n\n\n<li data-block-type=\"core\"><strong>Cold compressive strength:<\/strong>&nbsp;\u2265 2500 N per pellet<\/li>\n\n\n\n<li data-block-type=\"core\"><strong>Menerapkan strategi pengurangan limbah, pemulihan sumber daya, dan optimalisasi siklus hidup produk.&nbsp;<\/strong>Resistance to low-temperature cracking and high-temperature degradation<\/li>\n\n\n\n<li data-block-type=\"core\"><strong>Chemical composition:&nbsp;<\/strong>Includes TFe, SiO\u2082, Al\u2082O\u2083, CaO, MgO, S, P, etc.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" data-block-type=\"core\"><strong>3. Japanese JIS Standard<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\" data-block-type=\"core\">\n<li data-block-type=\"core\"><strong>JIS M 8713<\/strong>&nbsp;\u2014 Applies to physical property testing of sintered and pelletized iron ore.<br>Covers compressive strength, abrasion index, and degradation rate.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" data-block-type=\"core\"><strong>4. Indian BIS Standard<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\" data-block-type=\"core\">\n<li data-block-type=\"core\"><strong>IS 11323:1985 (Reaffirmed 2004)<\/strong>&nbsp;\u2014 Iron Ore Pellets \u2013 Specification<br>Specifies pellet composition, cold crushing strength, bulk density, and reducibility<\/li>\n<\/ul>\n\n\n\n<p data-block-type=\"core\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"conclusion\" data-block-type=\"core\"><strong>\u0417\u0430\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435<\/strong><\/h2>\n\n\n\n<p data-block-type=\"core\">Evaluating the quality of iron ore pellets is essential for optimizing the steel production process. The key quality indicators, including cold compression strength, reducibility, chemical composition, directly influence production efficiency, product quality and overall cost. Continuous monitoring and improvement of pellet quality are crucial for maintaining high standards in steel manufacturing.<\/p>\n\n\n\n<p data-block-type=\"core\">By using high-quality binders like those provided by Jianjie, manufacturers can improve these critical indicators. The right binder ensures better pellet formation, reduced impurity levels, enhanced performance during reduction, ultimately contributing to more efficient and cost-effective steel production.<\/p>\n\n\n\n<p data-block-type=\"core\">\u0415\u0441\u043b\u0438 \u0432\u0430\u0441 \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u0443\u0435\u0442 \u043d\u0430\u0448<a href=\"https:\/\/www.jianjiebinder.com\/ru\/product\/\">&nbsp;products<\/a>&nbsp;\u0438<a href=\"https:\/\/www.jianjiebinder.com\/ru\/our-services\/\">&nbsp;\u0441\u0435\u0440\u0432\u0438\u0441<\/a>\u041f\u043e\u0436\u0430\u043b\u0443\u0439\u0441\u0442\u0430, \u043d\u0435 \u0441\u0442\u0435\u0441\u043d\u044f\u0439\u0442\u0435\u0441\u044c&nbsp;<a href=\"https:\/\/www.jianjiebinder.com\/ru\/contact\/\">\u0441\u0432\u044f\u0437\u0430\u0442\u044c\u0441\u044f \u0441 \u043d\u0430\u043c\u0438<\/a>!<\/p>","protected":false},"excerpt":{"rendered":"<p>Understand how to evaluate iron ore pellet quality through key indicators such as cold compression strength, reducibility and more for steel production.<\/p>","protected":false},"author":1,"featured_media":16453,"comment_status":"open","ping_status":"open","sticky":false,"template":"wp-custom-template-single-posts-with-sidebar","format":"standard","meta":{"footnotes":""},"categories":[39,34],"tags":[],"class_list":["post-16053","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-briquetting"],"jetpack_featured_media_url":"https:\/\/www.jianjiebinder.com\/wp-content\/uploads\/2025\/10\/Jianjie-Binder-for-Iron-Ore-Pelletizing.jpg","_links":{"self":[{"href":"https:\/\/www.jianjiebinder.com\/ru\/wp-json\/wp\/v2\/posts\/16053","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jianjiebinder.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jianjiebinder.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jianjiebinder.com\/ru\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jianjiebinder.com\/ru\/wp-json\/wp\/v2\/comments?post=16053"}],"version-history":[{"count":2,"href":"https:\/\/www.jianjiebinder.com\/ru\/wp-json\/wp\/v2\/posts\/16053\/revisions"}],"predecessor-version":[{"id":18808,"href":"https:\/\/www.jianjiebinder.com\/ru\/wp-json\/wp\/v2\/posts\/16053\/revisions\/18808"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jianjiebinder.com\/ru\/wp-json\/wp\/v2\/media\/16453"}],"wp:attachment":[{"href":"https:\/\/www.jianjiebinder.com\/ru\/wp-json\/wp\/v2\/media?parent=16053"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jianjiebinder.com\/ru\/wp-json\/wp\/v2\/categories?post=16053"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jianjiebinder.com\/ru\/wp-json\/wp\/v2\/tags?post=16053"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}