预破碎在半自磨工艺流程中的应用
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摘要
较硬的矿石及临界粒子的存在会导致半自磨流程处理能力降低,因而在半自磨流程中引入预破碎是提升其产能的一种经济有效的方法。通过介绍预破碎的工艺特点,分析预破碎对半自磨流程的影响,总结了预破碎不同配置形式的优缺点,并结合国外一些预破碎的应用案例,阐述了增加预破碎在提高整个流程磨矿效率方面的优势,以期为国内半自磨流程的改造提供参考。
Since the existence of high-hardness ores and critical-size particles reduce the throughput of comminution circuit with SAG mill, the addition of pre-crushing into SAG circuit is an economical and effective method to enhance productivity. The paper introduced the technical characteristics of pre-crushing process, and analyzed its influences on SAG circuit. It also summarized the advantages and disadvantages of various-configuration pre-crushing operation, and narrated the advantages of pre-crushing addition in enhancing the grinding efficiency of the whole circuit in combination with some pre-crushing application cases at home and abroad, which offered reference for the reconstruction of domestic SAG circuit.
Since the existence of high-hardness ores and critical-size particles reduce the throughput of comminution circuit with SAG mill, the addition of pre-crushing into SAG circuit is an economical and effective method to enhance productivity. The paper introduced the technical characteristics of pre-crushing process, and analyzed its influences on SAG circuit. It also summarized the advantages and disadvantages of various-configuration pre-crushing operation, and narrated the advantages of pre-crushing addition in enhancing the grinding efficiency of the whole circuit in combination with some pre-crushing application cases at home and abroad, which offered reference for the reconstruction of domestic SAG circuit.
引文
[1]及亚娜,刘威.自磨、半自磨设备工艺发展现状及应用实践[J].现代矿业,2015(1):186-188.
[2]肖庆飞,康怀斌,肖珲,等.碎磨技术的研究进展及其应用[J].铜业工程,2016(1):15-27.
[3]夏菊芳.半自磨工艺在我国矿山的应用现状[J].中国矿山工程,2004,33(5):37-39.
[4]王皓.在半自磨前用圆锥破碎机对临界尺寸产品进行预先破碎提高半自磨机的处理量[J].国外金属矿选矿,2000(10):28-29.
[5]张晓云.采用圆锥破碎机预碎可大幅提高磨矿能力[J].现代矿业,2000(24):18-19.
[6]POWELL M,MAINZA A,HILDEN M,et al.Full pre-crush to SAG mlls-the case for changing this practice[C]//International conference on semi-autogenous and high pressure grinding technology.Vancouver,2015:1-22.
[7]MORRELL S.The influence of feed size on autogenous and semiAutogenous grinding and the role of blasting in its manipulation[C]//Cape Town:International mineral processing congress,2003,1:526-533.
[8]杨琳琳,文书明.自磨机和半自磨机的发展和应用[J].国外金属选矿,2005,42(7):13-16.
[9]LEE K,ROSARIO P,SCHWAB G,et al.An analysis on SAGpre-crush circuits[C]//Vancouver:Proceedings of the 2015International Conference on Autogenous,Semi-Autogenous Grinding Technology,2015:200-217.
[10]SIDDAL B,PUTLAND A B.Process design and implementation techniques for secondary crushing to increase milling capacity[C]//Denver:SME Annual meeting 2007,2007:376-380.
[11]ROSE D,MEADOWS D G,WESTENDORF M.Increasing SAG mill capacity at the copper mountain mine through the addition of a pre-crushing circuit[C]//Denver:SME Annual Conference 2015,2015:132-151.
[12]ALLAIRE A,RUNNELS D,SYLVESTRE Y,et al.Increased SAG grinding capacity at goldex secondary crushing of SAGmill feed[C]//Vancouver:Proceedings of the 2011 international conference on autogenous,semi-autogenous and high pressure grinding technology,2011:1-14.
[13]FESTA A,RUTLAND B,SCINTO P.Shedding light on secondary crushing[C]//Salt Lake City:SME Annual meeting2014,2014:68-74.
[2]肖庆飞,康怀斌,肖珲,等.碎磨技术的研究进展及其应用[J].铜业工程,2016(1):15-27.
[3]夏菊芳.半自磨工艺在我国矿山的应用现状[J].中国矿山工程,2004,33(5):37-39.
[4]王皓.在半自磨前用圆锥破碎机对临界尺寸产品进行预先破碎提高半自磨机的处理量[J].国外金属矿选矿,2000(10):28-29.
[5]张晓云.采用圆锥破碎机预碎可大幅提高磨矿能力[J].现代矿业,2000(24):18-19.
[6]POWELL M,MAINZA A,HILDEN M,et al.Full pre-crush to SAG mlls-the case for changing this practice[C]//International conference on semi-autogenous and high pressure grinding technology.Vancouver,2015:1-22.
[7]MORRELL S.The influence of feed size on autogenous and semiAutogenous grinding and the role of blasting in its manipulation[C]//Cape Town:International mineral processing congress,2003,1:526-533.
[8]杨琳琳,文书明.自磨机和半自磨机的发展和应用[J].国外金属选矿,2005,42(7):13-16.
[9]LEE K,ROSARIO P,SCHWAB G,et al.An analysis on SAGpre-crush circuits[C]//Vancouver:Proceedings of the 2015International Conference on Autogenous,Semi-Autogenous Grinding Technology,2015:200-217.
[10]SIDDAL B,PUTLAND A B.Process design and implementation techniques for secondary crushing to increase milling capacity[C]//Denver:SME Annual meeting 2007,2007:376-380.
[11]ROSE D,MEADOWS D G,WESTENDORF M.Increasing SAG mill capacity at the copper mountain mine through the addition of a pre-crushing circuit[C]//Denver:SME Annual Conference 2015,2015:132-151.
[12]ALLAIRE A,RUNNELS D,SYLVESTRE Y,et al.Increased SAG grinding capacity at goldex secondary crushing of SAGmill feed[C]//Vancouver:Proceedings of the 2011 international conference on autogenous,semi-autogenous and high pressure grinding technology,2011:1-14.
[13]FESTA A,RUTLAND B,SCINTO P.Shedding light on secondary crushing[C]//Salt Lake City:SME Annual meeting2014,2014:68-74.