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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第26卷    第7期    总第208期    2016年7月

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文章编号:1004-0609(2016)-07-1538-09
高压辊磨对邦铺钼铜矿石选择性碎解作用及机制
侯 英1,印万忠2,于光涛3,杨 春3,盖 壮3,赵通林1,肖丽聪1

(1. 辽宁科技大学 矿业工程学院,鞍山 114051;
2. 福州大学 紫金矿业学院,福州 350108;
3. 鞍钢集团 弓长岭矿业公司,辽阳 111008
)

摘 要: 对邦铺钼铜矿石进行高压辊磨(HPGR)和颚式破碎(JC),然后对两种产品进行磨矿—浮选试验,采用扫描电镜(SEM)研究矿石的高压辊粉碎特性,采用单体解离度分析仪(MLA)研究磨矿产品的解离特性,并从药剂用量等方面研究矿石的最佳磨矿细度和浮选工艺条件。结果表明:高压辊磨—球磨—浮选工艺适宜的磨矿细度为粒度小于0.074 mm的颗粒含量为65%,颚式破碎—球磨—浮选工艺适宜的磨矿细度为粒度小于0.074 mm的颗粒含量为75%;在适宜磨矿细度和药剂制度下,高压辊磨—球磨较颚式破碎—球磨浮选效果好,钼粗精矿钼品位提高0.83%,钼回收率提高1.05%;铜粗精矿铜品位提高0.23%,铜回收率提高2.66%;高压辊磨对邦铺钼铜矿石发生选择性粉碎现象。球磨对高压辊磨产品发生选择性解离现象,提出“矿石高压辊选择性粉碎—球磨选择性解离—浮选”技术方案。

 

关键词: 高压辊磨机;颚式破碎机;选择性磨矿;选择性解离;浮选

Effect and mechanism of selective crushing and liberation of Mo-Cu ore from Bangpu crushed by high pressure grinding rolls
HOU Ying1, YIN Wan-zhong2, YU Guang-tao3, YANG Chun3, GAI Zhuang3, ZHAO Tong-lin1, XIAO Li-cong1

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

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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