{"id":2097,"date":"2026-03-30T08:30:28","date_gmt":"2026-03-30T08:30:28","guid":{"rendered":"https:\/\/hanmetallurgy.com\/?p=2097"},"modified":"2026-03-30T08:30:28","modified_gmt":"2026-03-30T08:30:28","slug":"sintered-ore-tumbler-strength-test-method-essential-quality-control-for-efficient-steelmaking","status":"publish","type":"post","link":"https:\/\/luzixinzuonew.han-light.com\/index.php\/sintered-ore-tumbler-strength-test-method-essential-quality-control-for-efficient-steelmaking\/","title":{"rendered":"Sintered Ore Tumbler Strength Test Method \u2013 Essential Quality Control for Efficient Steelmaking"},"content":{"rendered":"\n

In the steel production process, especially in short-process steelmaking<\/strong> and electric arc furnace (EAF) operations<\/strong>, the quality of raw materials directly impacts energy efficiency, yield, and final product performance. Among these, sintered ore tumbler strength<\/strong> is a critical physical indicator that reflects the mechanical durability of sinter during handling and blast furnace charging. Accurate testing ensures optimal furnace operation and reduced fines generation.<\/p>\n\n\n\n

As a leading manufacturer of rolling mill equipment<\/strong> and short-process steelmaking systems<\/strong>, we emphasize standardized material testing protocols\u2014such as the sintered ore tumbler strength test method<\/strong>\u2014to support high-efficiency, low-emission steel production.<\/p>\n\n\n\n

\n\n\n\n

Standard Sintered Ore Tumbler Strength Test Procedure<\/h3>\n\n\n\n

1. Sampling<\/strong><\/p>\n\n\n\n

    \n
  • Belt sampling<\/strong>: Collect 8 kg every 15 minutes. Over 4 hours, gather 16 samples (~120 kg) to form one composite test batch.<\/li>\n\n\n\n
  • Minimum of\u00a0two independent samplings per day<\/strong>\u00a0are recommended.<\/li>\n\n\n\n
  • Samples must be taken across the\u00a0entire cross-section<\/strong>\u00a0of the conveyor belt to ensure representativeness.<\/li>\n\n\n\n
  • For stockpile sampling, follow standard bulk material sampling guidelines.<\/li>\n<\/ul>\n\n\n\n

    2. Drying<\/strong>
    If the sinter has been watered or stored outdoors, dry it at 105 \u00b1 5\u00b0C<\/strong> before testing to remove surface moisture.<\/p>\n\n\n\n

    3. Sample Size Requirement<\/strong>
    The total sample must contain at least 60 kg<\/strong> of the 10.0\u201340.0 mm<\/strong> size fraction.<\/p>\n\n\n\n

    4. Sieve Analysis<\/strong>
    Perform four-stage sieving: 40.0 mm, 25.0 mm, 16.0 mm, and 10.0 mm<\/strong>. Record weights and calculate percentage distribution.<\/p>\n\n\n\n

    5. Test Sample Preparation<\/strong>
    The tumbler test uses a blend of three size fractions:<\/p>\n\n\n\n

      \n
    • 40.0\u201325.0 mm<\/strong><\/li>\n\n\n\n
    • 25.0\u201316.0 mm<\/strong><\/li>\n\n\n\n
    • 16.0\u201310.0 mm<\/strong><\/li>\n<\/ul>\n\n\n\n

      These are mixed in proportion to their sieve percentages to form a 15.0 \u00b1 0.15 kg<\/strong> test sample (denoted as M<\/strong>).<\/p>\n\n\n\n

      Example<\/em>:
      If sieve analysis yields 22.2% (40\u201325 mm), 28.5% (25\u201316 mm), and 15.7% (16\u201310 mm), the 15 kg test mix includes:<\/p>\n\n\n\n

        \n
      • 5.02 kg of 40\u201325 mm<\/li>\n\n\n\n
      • 6.44 kg of 25\u201316 mm<\/li>\n\n\n\n
      • 3.56 kg of 16\u201310 mm<\/li>\n<\/ul>\n\n\n\n

        6. Tumbler Test Execution<\/strong>
        Place the prepared sample into a standard tumbler drum rotating at 25 \u00b1 1 rpm<\/strong> for 200 revolutions<\/strong>.<\/p>\n\n\n\n

        7. Post-Test Sieving & Calculation<\/strong>
        After tumbling, sieve the sample through a 6.3 mm square-hole screen<\/strong> using 30 reciprocating motions<\/strong> at 20 cycles per minute<\/strong> (stroke: 100\u2013150 mm).
        Weigh the +6.3 mm fraction (m)<\/strong>.<\/p>\n\n\n\n

        Tumbler Index (T) = (m \/ M) \u00d7 100%<\/strong><\/p>\n\n\n\n

        8. Quality Standards<\/strong><\/p>\n\n\n\n

          \n
        • Qualified product<\/strong>: T \u2265\u00a062.5%<\/strong><\/li>\n\n\n\n
        • First-grade product<\/strong>: T \u2265\u00a065.5%<\/strong><\/li>\n<\/ul>\n\n\n\n
          \n\n\n\n

          Why This Matters for Modern Steel Plants<\/h3>\n\n\n\n

          For operators of EAF-based short-process steel mills<\/strong> and continuous rolling lines<\/strong>, consistent sinter quality minimizes dust formation, improves reducibility, and stabilizes furnace burden permeability. Integrating reliable tumbler strength data into raw material acceptance protocols enhances process control\u2014especially when feeding high-efficiency direct reduced iron (DRI)<\/strong> or hot briquetted iron (HBI)<\/strong> blends alongside sinter.<\/p>\n\n\n\n

          At our company, we design green, intelligent short-process steelmaking solutions<\/strong> and high-precision rolling mill systems<\/strong> that rely on stringent input material standards. Understanding and applying the sinter tumbler strength test method<\/strong> aligns with global best practices in sustainable steel production<\/strong>, energy-saving smelting<\/strong>, and smart manufacturing<\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":"

          In the steel production process, especially in short-process steelmaking and electric arc furnace (EAF) operations, the quality of raw materials directly impacts energy efficiency, yield, and final product performance. Among these, sintered ore tumbler strength is a critical physical indicator that reflects the mechanical durability of sinter during handling and blast furnace charging. Accurate testing ensures optimal furnace operation and […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2097","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/luzixinzuonew.han-light.com\/index.php\/wp-json\/wp\/v2\/posts\/2097","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/luzixinzuonew.han-light.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/luzixinzuonew.han-light.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/luzixinzuonew.han-light.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/luzixinzuonew.han-light.com\/index.php\/wp-json\/wp\/v2\/comments?post=2097"}],"version-history":[{"count":0,"href":"https:\/\/luzixinzuonew.han-light.com\/index.php\/wp-json\/wp\/v2\/posts\/2097\/revisions"}],"wp:attachment":[{"href":"https:\/\/luzixinzuonew.han-light.com\/index.php\/wp-json\/wp\/v2\/media?parent=2097"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/luzixinzuonew.han-light.com\/index.php\/wp-json\/wp\/v2\/categories?post=2097"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/luzixinzuonew.han-light.com\/index.php\/wp-json\/wp\/v2\/tags?post=2097"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}