(1. 遼寧科技大學 礦業(yè)工程學院，鞍山 114051；
2. 福州大學 紫金礦業(yè)學院，福州 350108；
3. 鞍鋼集團 弓長嶺礦業(yè)公司，遼陽 111008)
摘 要: 對邦鋪鉬銅礦石進行高壓輥磨(HPGR)和顎式破碎(JC)，然后對兩種產(chǎn)品進行磨礦—浮選試驗，采用掃描電鏡(SEM)研究礦石的高壓輥粉碎特性，采用單體解離度分析儀(MLA)研究磨礦產(chǎn)品的解離特性，并從藥劑用量等方面研究礦石的最佳磨礦細度和浮選工藝條件。結果表明:高壓輥磨—球磨—浮選工藝適宜的磨礦細度為粒度小于0.074 mm的顆粒含量為65%，顎式破碎—球磨—浮選工藝適宜的磨礦細度為粒度小于0.074 mm的顆粒含量為75%；在適宜磨礦細度和藥劑制度下，高壓輥磨—球磨較顎式破碎—球磨浮選效果好，鉬粗精礦鉬品位提高0.83%，鉬回收率提高1.05%；銅粗精礦銅品位提高0.23%，銅回收率提高2.66%；高壓輥磨對邦鋪鉬銅礦石發(fā)生選擇性粉碎現(xiàn)象。球磨對高壓輥磨產(chǎn)品發(fā)生選擇性解離現(xiàn)象，提出“礦石高壓輥選擇性粉碎—球磨選擇性解離—浮選”技術方案。
關鍵字: 高壓輥磨機；顎式破碎機；選擇性磨礦；選擇性解離；浮選
（1. School of Mining Engineering, University of Science and Technology Liaoning, Anshan 114051, China;
2. College of Zijin Mining, Fuzhou University, Fuzhou 350108, China;
3. Gongchangling Mining Co.,Ltd, Anshan Steel Group, Liaoyang 111008, China）
Abstract:Mo-Cu ore from Bangpu was crushed by high pressure grinding rolls(HPGR) and jaw crusher(JC), and grinding-flotation test of the product crushed by different crushing processes was carried out. Crushing characteristics of HPGR of ore was studied by scanning electron microscopy(SEM), dissociation character of grinding product was studied by mineral liberation analyzer(MLA), and the best grinding fineness and flotation process conditions were studied from the reagent dosage and other aspects. The results show that the best grinding fineness of the product with size less than 0.074 mm crushed by HPGR and JC are 65% and 75%, respectively. The floatation effect of the grinding product crushed by HPGR are better than that crushed by JC, and the molybdenum grade, molybdenum recovery of molybdenum rougher concentrate, copper grade, copper recovery of copper rougher concentrate of HPGR products when the grinding fineness less than 0.074 mm content is 65% comparing with JC products when the grinding fineness less than 0.074 mm content is 75%, respectively, high 0.83%, high 1.03%, low 0.02%, high 2.66%. The phenomenon of selective combinations occurs when crushed by HPGR, and the phenomenon of selective dissociation occurs when the product crushed by HPGR is grinding. The “HPGR selective crushing-selective dissociation of the product was grinding by ball milling-flotation” technical scheme was put forward.
Key words: high pressure grinding rolls; jaw crusher; selective grinding; selective dissociation; flotation
