{"id":31,"date":"2026-08-24T08:12:52","date_gmt":"2026-08-24T08:12:52","guid":{"rendered":"https:\/\/www.goldprosteelballs.com\/case\/copper-sag\/"},"modified":"2026-11-04T02:14:38","modified_gmt":"2026-11-04T02:14:38","slug":"copper-sag","status":"publish","type":"goldpro_case","link":"https:\/\/www.goldprosteelballs.com\/pt\/case\/copper-sag\/","title":{"rendered":"Customer Case Study of 140 mm Forged Grinding Balls at a Large Copper Mine"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Operating Challenge<\/h2>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">High-impact duty increased the risk of ball breakage, deformation, grate blockage, and unplanned downtime.<\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Large-diameter SAG balls must combine impact toughness with controlled wear. Inconsistent hardness or heat treatment can increase scats, restrict discharge, disrupt the ball charge, and raise total grinding cost.<\/p>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\">Engineered Solution<\/h2>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Select alloy, diameter, and hardness gradient from ore hardness, feed size, mill diameter, speed, filling level, liner profile, and current breakage data. Verify each production batch before the plant trial.<\/p>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\">Trial Validation<\/h2>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>Breakage-related cleanup, grate blockage, and downtime<\/li>\r\n<li>Out-of-round balls and scats throughout the wear cycle<\/li>\r\n<li>Media consumption, throughput, energy use, and total grinding cost<\/li>\r\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Goldpro supplied customized 140 mm high-toughness forged grinding balls for a large 10.97 \u00d7 6.3 m SAG mill operating in an SABC grinding circuit. Goldpro provided 30 days of on-site support to facilitate the gradual replacement of the existing grinding balls. Consequently,Mill throughput increased from 1,000 t\/h to 1,140 t\/h (+14%), while specific grinding ball consumption decreased from 0.72 to 0.65 kg\/t.<\/p>","protected":false},"featured_media":6779,"menu_order":0,"template":"","case_mineral":[57],"class_list":["post-31","goldpro_case","type-goldpro_case","status-publish","has-post-thumbnail","hentry","case_mineral-57"],"_links":{"self":[{"href":"https:\/\/www.goldprosteelballs.com\/pt\/wp-json\/wp\/v2\/goldpro_case\/31","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.goldprosteelballs.com\/pt\/wp-json\/wp\/v2\/goldpro_case"}],"about":[{"href":"https:\/\/www.goldprosteelballs.com\/pt\/wp-json\/wp\/v2\/types\/goldpro_case"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.goldprosteelballs.com\/pt\/wp-json\/wp\/v2\/media\/6779"}],"wp:attachment":[{"href":"https:\/\/www.goldprosteelballs.com\/pt\/wp-json\/wp\/v2\/media?parent=31"}],"wp:term":[{"taxonomy":"case_mineral","embeddable":true,"href":"https:\/\/www.goldprosteelballs.com\/pt\/wp-json\/wp\/v2\/case_mineral?post=31"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}