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黄金科学技术 ›› 2023, Vol. 31 ›› Issue (6): 1044-1050.doi: 10.11872/j.issn.1005-2518.2023.06.176

• 采选技术与矿山管理 • 上一篇    

黄金矿山格子型球磨机节能降耗应用研究

孙浩杰1(),杨俊彦1(),李雪林2,徐忠敏2,谷建国1,游世辉1   

  1. 1.枣庄学院机电工程学院,山东 枣庄 277160
    2.招金矿业股份有限公司金翅岭金矿,山东 烟台 265403
  • 收稿日期:2022-12-01 修回日期:2023-09-08 出版日期:2023-12-31 发布日期:2024-01-26
  • 通讯作者: 杨俊彦 E-mail:2838796761@qq.com;yang8865139@163.com
  • 作者简介:孙浩杰(2002-),男,山东烟台人,本科生,从事矿山机械与分选研究工作。2838796761@qq.com
  • 基金资助:
    枣庄学院博士科研启动基金项目“球磨机节能降耗关键技术开发与应用”(BS1020717);枣庄学院高层次人才团队建设经费项目“智能制造中的拓扑数据分析”(5010207);枣庄市科技发展计划项目“球磨机节能降耗关键技术开发与应用”(2020GX11)

Application Research on Energy Saving and Consumption Reduction of Grid Ball Mill in Gold Mine

Haojie SUN1(),Junyan YANG1(),Xuelin LI2,Zhongmin XU2,Jianguo GU1,Shihui YOU1   

  1. 1.College of Mechanical and Electrical Engineering, Zaozhuang University, Zaozhuang 277160, Shandong, China
    2.Jinchiling Gold Mine, Zhaojin Mining Industry Co. , Ltd. , Yantai 265403, Shandong, China
  • Received:2022-12-01 Revised:2023-09-08 Online:2023-12-31 Published:2024-01-26
  • Contact: Junyan YANG E-mail:2838796761@qq.com;yang8865139@163.com

摘要:

格子型球磨机是黄金矿山选矿厂的常用设备,磨矿作业是整个选矿厂耗能最高的工段。为了降低球磨机的能耗,针对球磨机充填率低以及补装球钢球尺寸不合理等因素导致球磨机能耗高的问题,采用精确化补装球技术对金翅岭金矿选矿厂中的球磨机能耗和效率进行了研究。根据矿石力学性能,采用段氏球径半理论公式精确计算了初装球方案,并在此基础上提出了精确化补装球方案。试验结果表明:球磨机的台时产量提高了2.60 t/h,磨矿细度提高了11.90%,电耗和球耗分别下降了2.17 kW·h/t和0.21 kg/t。由此可见,精确化补装球技术能够有效降低大型黄金矿山中格子型球磨机的能耗,具有良好的推广应用价值。

关键词: 精确化补装球, 磨矿细度, 电耗, 球耗, 球磨机, 黄金矿山

Abstract:

The lattice ball mill is a common equipment in concentrator of gold mine,and the grinding operation is the highest energy-consumption section of the whole concentrator.In order to reduce the energy consumption of the ball mill,aiming at the problem of high energy consumption of the ball mill caused by the low filling rate of the ball mill and the unreasonable size of the ball steel ball,the ball mill in the concentrator of Jinchiling gold mine was studied by using the accurate filling technology. According to the mechanical properties of the ore,the initial ball loading scheme was accurately calculated by using the semi-theoretical formula of Duan’s ball size,and on the basis of this,a accurate ball replenishment scheme was proposed.The results of industrial experi-ments show that the output of the ball mill is increased by 2.6 t/h,the grinding fineness is increased by 11.90%,the power consumption and ball consumption are decreased by 2.17 kW·h/t and 0.21 kg/t,respectively. Therefore,it can be seen that the precise filling ball technology can effectively reduce the energy consumption of the lattice ball mill in large gold mine,and it has good promotion value.

Key words: accurate filling ball, grinding fineness, power consumption, ball consumption, ball mill, gold mine

中图分类号: 

  • TD453

表1

矿石力学性质测试结果"

样品编号单轴抗压强度/(kg·cm-2泊松比μ50样品编号单轴抗压强度/(kg·cm-2泊松比μ50
11 802.410.16671 426.570.169
21 780.020.30281 432.140.253
31 720.350.16291 463.250.274
平均值1 767.590.210平均值1 440.650.232
41 320.560.21510680.520.235
51 356.210.26411670.260.231
61 358.240.18912642.670.217
平均值1 345.000.223平均值664.480.228

表2

球磨工作部分参数"

参数数值
转速率Ψ/%76
钢球有效密度ρe/(kg·cm-35.94
缩聚层直径D0/m2.38
抗压强度σ/(kg·cm-21 767.59

表3

精确化初装球计算结果"

级别/mmdf/cm修正系数Kc级别产率λ/%

球径

/mm

各组球比/%
合计100.00100100
-16+141.61.2021.216020
-14+101.41.1932.475030
-10+0.91.01.0038.213040
-0.9+0.30.093.448.112010

表4

精确化补装球前返砂筛分结果粒级分布"

粒级/mm个别产率/%筛上累计产率/%筛下累计产率/%
合计100.00
+65.035.03100.00
-6+42.097.1294.97
-4+23.3610.4892.88
-2+0.9008.4718.9589.52
-0.900+0.45030.9749.9281.05
-0.450+0.18028.0777.9950.08
-0.180+0.1258.9086.8922.01
-0.125+0.0745.1091.9913.11
-0.074+0.0382.9694.958.01
-0.0385.05100.005.05

表5

精确化补装球后返砂筛分结果粒级分布"

粒级/mm个别产率/%筛上累计产率/%筛下累计产率/%
合计100.00
+69.289.28100.00
-6+42.3711.6590.72
-4+23.2914.9488.34
-2+0.9008.3123.2585.06
-0.900+0.45026.8050.0576.74
-0.450+0.18030.8180.8649.94
-0.180+0.12510.5591.4119.14
-0.125+0.0744.3295.738.59
-0.074+0.0382.5698.294.26
-0.0381.71100.001.71

表6

精确化补装球前溢流筛分结果粒级分布"

粒级/mm个别产率/%筛上累计产率/%筛下累计产率/%

金品位

/(g·t-1

分布率
合计100.001.96100.00
-0.900+0.4501.061.06100.000.230.12
-0.450+0.18018.3719.4398.940.302.80
-0.180+0.12517.3836.8180.570.736.45
-0.125+0.07418.8455.6563.192.4423.36
-0.074+0.03814.2669.9144.354.8735.31
-0.03830.08100.0030.082.0931.96

表7

精确化补装球后溢流筛分结果粒级分布"

粒级/mm个别产率/%筛上累计产率/%筛下累计产率/%

金品位

/(g·t-1

分布率
合计100.001.31100.00
-0.900+0.4500.170.17100.00--
-0.450+0.1809.8810.0599.830.080.60
-0.180+0.12517.0527.1089.950.7810.10
-0.125+0.07421.3948.4972.901.5224.69
-0.074+0.03815.4263.9151.511.9622.95
-0.03836.10100.0036.101.5241.67

表8

精确化补装球前后生产指标对比"

月份

原矿品位

/(g·t-1

精矿品位

/(g·t-1

回收率

/%

台时产量

/(t·h-1

磨矿细度(-0.074 mm占比)

/%

磨矿电耗

/(kW·h·t-1

球耗

/(kg·t-1

11.4118.4394.4753.2644.3511.121.12
21.5616.7393.4153.2644.3511.151.26
31.2218.1593.9453.2644.3514.231.28
前3月平均1.3917.7793.9453.2644.3512.171.22
41.4319.1696.1960.9353.6512.470.94
51.4019.0096.7455.8658.008.361.03
61.4521.2992.9250.8057.099.161.07
后3月平均1.4319.8295.2855.8656.2510.001.01
变化+0.04+2.05+1.34+2.60+11.90-2.17-0.21
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