某难选金矿选厂浮选时间和放大系数的优化研究

doi:10.11872/j.issn.1005-2518.2022.04.165

Abstract

Abstract:

Flotation time is one of the important parameters in the design of concentrator.The length of flotation time has great influence on the recovery and utilization of mineral resources and the operation effect of the concentrator.The determination of flotation time is related to the flotation time and magnification factor of small laboratory tests.In view of the selection of flotation time for refractory gold ores and the verification of the amplification factor of the flotation time of the concentrator，the concentrator was designed on the basis of the design of a 1 500 t/d concentrator，and the actual flotation time and amplification factor were calculated.The flotation time of the pilot scale test was 31 min.The designed flotation time is 54 min，and the average amplification coefficient is 1.74（roughing K value is 1.5，cleaning K value is 2.50 to 2.67）.The actual flotation time of the concentrator is 68.99 min，and the actual amplification coefficient is 2.23（the actual rough scavenging K value is 1.86 to 2.41，and the actual cleaning K value is 1.88 to 3.45）.With the change of ore properties，the pilot scale test of flotation process optimization was carried out for the gold mine according to the change of ore properties.Compared with the flotation test in the design，the flotation concentration is increased from 25% to 28%，the -74 μm content of grinding classification product is reduced from 75% to 71%，and the collector butyl xanthate was replaced with iso-amyl xanthate.The amount of sodium carbonate in rough scavenging process increases by 500 g/t，the amount of copper sulfate decreases by 200 g/t，no more copper sulfate and sodium carbonate was added in scavenging，and the flotation time is reduced from 31 min to 21 min.On this basis，the mineral processing tests with the same grinding fineness，flotation concentration and system conditions were conducted in the mill.The best ore dressing plant capacity of 1 704 t/d was determined.Combined with the survey of flotation process，according to the laboratory flotation test，the time of flotation，the flotation machine volume of each activity and the concentration of flotation were determined.The flotation time and K value of each flotation operation in the concentrator were calculated.The total flotation time of the concentrator reaches 84.08 min，and the K value of the flotation time is 4.00.The K value of rough sweep selection is 3.96 to 4.21 with an average of 4.10，and the K value of clean selection is 3.66 to 4.00 with an average of 3.81.After optimization，ore processing capacity increase by 204 t/d，gold concentrate concentration ratio decrease by 0.11 and gold recovery rate increase by 3.22% when the gold grade of raw ore decrease by 0.47 g/t.The research provides reference for the design of concentrator of the same type ore.

Key words: refractory gold ore, flotation time, amplification coefficient, process optimization, capacity, flotation performance

CLC Number:

TD953

Pingtian MING,Fei LI,Zhaohua XIONG,Ziqiang CHEN,Shengping MA. Study on Optimization of Flotation Time and Magnification Coefficient of a Refractory Gold Ore Concentrator[J].Gold Science and Technology, 2022, 30(4): 623-631.

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References 0

	Chen Mingjie， You Tengsheng， Sun Mingjun，et al，2018.Review of common flotation machines at home and abroad and problems needing attention in design and selection［J］.China Mine Engineering，47（2）：31-35.
	Chen Xiaodong，2021.Principle and practice of enhanced flotation performance of fine particles by JRF micro-bubble flotaion machine［J］.Nonferrous Metals（Mineral Processing Section），（1）：112-116.
	Deng Shengwei， Qi Zhongxu，2019.Discussion problems in industrialization process from small-scale mineral processing test results［J］.Mining Research and Development，39（3）：72-74.
	Editorial Board of Mineral Processing Design Manual，1988.Mineral Processing Design Manual［M］.Beijing：Metallurgical Industry Press.
	Li Hong，2011.Selection calculation of beneficiation equipment（flotation machine）［J］.Xinjiang Non-Ferrous Metals，（5）：42-45.
	Li Lei， Liu Zhihong，2014.Effect of ultrasonic treatment time on ash reduction by flotation of slime［J］.Shandong Industrial Technology，（4）：15，42.
	Ichi Lijima， Liu Zongyan，1990.Study on the proportional coefficient of flotation time amplification［J］.Foreign Metal Ore Dressing，（5）：19-22.
	Liu Jianzhong，2009.Experimental study on copper-nickel mixed flotation time of copper-nickel ore［J］.Xinjiang Non-ferrous Metals，（5）：42-45.
	Liu Shouxin， Huang Jianfen， Shi Weihong，2010.Experimental study on beneficiation of a gold mine in Yunnan ［J］.Mining and Metallurgy，（1）：33-35.
	Qin Wu， Li Tongqi， Wang Nianfeng，et al，2018.Study on flotation process for improving grade and recovery of lithium mica concentrate［J］.Foshan Ceramics，（8）：27-31.
	Shi Shuaixing， Zhang Yuejun， Han Dengfeng，et al，2013.Analysis of several problems in industrial selection of large flotation machine in China［J］.Nonferrous Metals（Mineral Processing Section），（Supp.）：199-201.
	Tang Yisheng，2020.Mineral processing technique for a certain complex Pb-Zn-Sn polymetallic ore［J］.Mining and Metallurgical Engineering，40（3）：68-71.
	Tian Yilan，2015.Experimental study on beneficiation of a gold mine in Yunnan ［J］.Mining and Metallurgy，24（2）：15-18.
	Yang Bo， Tong Xiong， Xie Xian，et al，2020.Study on the gold recovery from flotation tailings of a refractory gold ores in Gansu Province by a process combining mineral processing and metallurgy［J］.Gold Science and Technology，28（2）：285-292.
	Yang Junlong， Guo Yanhua， Guo Haining，et al，2020.Experimental study on beneficiation process of carbonate refractory gold ore［J］.Non-ferrous Metals（Mineral Processing Section），（1）：42-47.
	Yin Lu， Jin Zhenan， Yang Hongying，et al，2018.Present situation forecast of gold resources in China［J］.Gold Science and Technology，28（2）：17-24.
	Yu Houfu， Shen Tao， Liu Qian，2020.Beneficiation practice of improving recovery rate of flotation column［J］.Mining Engineering Research，35（1）：69-73.
	Yuan Linyang， Lu Shijie， Zhu Shenglin，et al，2020.Study on residence time distribition of pulp in flotation cell［J］.Nonferrous Metals（Mineral Processing Section），（4）：100-104.
	Zhang Lixia，2002.Improvement of gold recovery of refractory gold flotation concentrate by continuous bioleleaching and thiourea leaching［J］.Hydrometallurgy，21（3）：142.
	Zhao Tielin，2018.Transformation of ore dressing process of nanfen concentrator in beishan mining area［J］.Metal Mine，（2）：103-106.
	Zhou Jianyue，2018.Research on flotation process and production practice of Ludouzhan gold-antimony ore ［J］.Hunan Non-ferrous Metals，34（1）：20-25.
	陈名洁，尤腾胜，孙明俊，等，2018.国内外常用浮选机综述及其设计选型中应注意的问题［J］.中国矿山工程，47（2）：31-35.
	陈晓东，2021.精锐微泡浮选机强化微细粒浮选的机理与实践［J］.有色金属（选矿部分），（1）：112-116.
	邓圣为，祁忠旭，2019.选矿小型试验成果工业化过程遇到的问题探讨［J］.矿业研究与开发，39（3）：72-74.
	饭岛一，刘宗炎，1990.关于浮选时间放大比例系数的研究［J］.国外金属矿选矿，（5）：19-22.
	李红，2011.选矿设备（浮选机）选择计算［J］.新疆有色金属，（5）：42-45.
	李垒，刘志红，2014.超声处理时间对煤泥浮选降灰的影响［J］.山东工业技术，（4）：15，42.
	刘建忠，2009.有关铜镍矿铜镍混合浮选时间的试验研究［J］.新疆有色金属，（1）：60-64.
	刘守信，黄健芬，师伟红，2010.云南某金矿选矿试验研究［J］.矿冶，（1）：33-35.
	秦伍，李同其，王念峰，等，2018.提高锂云母精矿品位及回收率的浮选工艺研究［J］.佛山陶瓷，（8）：27-31.
	史帅星，张跃军，韩登峰，等，2013.浅析我国大型浮选机工业选型中几个问题［J］.有色金属（选矿部分），（增）：199-201.
	唐义胜，2020.某复杂铅锌锡多金属选矿工艺试验研究［J］.矿冶工程，40（3）：68-71.
	田祎兰，2015.云南某金矿选矿试验研究［J］.矿冶，24（2）：15-18.
	《选矿设计手册》编委会，1988.选矿设计手册［M］.北京：冶金工业出版社.
	杨波，童雄，谢贤，等，2020.选冶联合提高甘肃某难浸金矿浮选尾矿金回收率的试验研究［J］.黄金科学技术，28（2）：285-292.
	杨俊龙，郭艳华，郭海宁，等，2020.碳酸盐型难选金矿石选矿工艺流程试验研究［J］.有色金属（选矿部分），（1）：42-47.
	殷璐，金哲男，杨红英，等，2018.我国黄金资源综合利用现状与展望［J］.黄金科学技术，26（1）：17-24.
	余厚福，申滔，刘倩，2020.提高浮选柱作业回收率选矿实践［J］.矿业工程研究，35（1）：69-73.
	袁琳阳，卢世杰，朱圣林，等，2020.浮选机内矿浆停留时间分布研究［J］.有色金属（选矿部分），（4）：100-104.
	张丽霞，2002.利用连续生物浸出和硫脲浸出提高难处理浮选金精矿的金回收率［J］.湿法冶金，21（3）：142.
	赵铁林，2018.南芬选矿厂处理北山采区矿石选矿工艺流程改造［J］.金属矿山，（2）：103-106.
	周建月，2018.录斗艘金锑矿浮选工艺研究与生产实践［J］.湖南有色金属，34（1）：20-25.

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选矿指标	设计指标值
原矿金品位/（×10^-6）	3.64
精矿金品位/（×10^-6）	37.00
尾矿金品位/（×10^-6）	0.72
精矿产率/%	11.11
金回收率/%	82.42
金富集比	10.16

作业名称	产率/%	选厂浮选浓度/%	浮选机有效容积/m3	浮选时间/min			K值
作业名称	产率/%	选厂浮选浓度/%	浮选机有效容积/m3	设计	试验	选厂实际	设计	选厂实际
粗选	153.47	25.00	40	12	8	14.85	1.50	1.86
扫一	108.11	23.20	40	12	8	19.30	1.50	2.41
扫二	94.92	22.50	32	12	8	16.97	1.50	2.12
粗扫选小计			112	36	24	51.12	1.50	2.13
精一	33.92	21.00	12	10	4	7.51	2.50	1.88
精二	11.11	20.00	8	8	3	10.36	2.67	3.45
精选小计			20	18	7	17.87	2.57	2.55
累计			132	54	31	68.99	1.74	2.23

选矿指标	达产指标值
原矿金品位/（×10^-6）	2.77
精矿金品位/（×10^-6）	27.34
尾矿金品位/（×10^-6）	0.58
精矿产率/%	8.20
金回收率/%	80.94
金富集比	9.87

浮选浓度/%	金品位/（×10^-6）			选矿指标
浮选浓度/%	原矿	精矿	尾矿	产率/%	回收率/%	金富集比
23.87	2.67	28.12	0.61	7.49	78.86	10.53
25.11	2.81	27.74	0.63	8.04	79.38	9.87
28.08	2.78	26.87	0.59	8.33	80.55	9.67
29.24	2.72	26.40	0.63	8.11	78.72	9.71

浮选流程	刮泡时间	原矿金品位/（×10^-6）	产品金品位/（×10^-6）	作业产率/%	累积产率/%	作业回收率/%	累积回收率/%
粗选	第1 min	2.78	43.21	2.46	2.46	38.24	38.25
	第2 min		34.55	1.49	3.95	18.52	56.75
	第3 min		17.78	2.49	6.44	15.93	72.68
	第4~5 min		11.32	1.89	8.33	7.70	80.38
	第6~7 min		5.21	0.24	8.57	0.45	80.83
	第8~9 min		1.20	0.54	9.11	0.23	81.06
扫一	第1 min	0.59	3.21	1.87	1.87	10.17	10.17
	第2~3 min		1.83	1.50	3.37	4.65	14.82
	第4~5 min		1.72	1.59	4.95	4.64	19.46
	第6~7 min		1.51	0.94	5.89	2.41	21.87
扫二	第1~2 min	0.50	1.48	2.00	2.00	5.92	5.92
	第3~4 min		1.37	1.15	3.15	3.15	9.07
	第5~7 min		0.71	0.66	3.81	0.94	10.01

Study on Optimization of Flotation Time and Magnification Coefficient of a Refractory Gold Ore Concentrator

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