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山东某金矿石可磨性及浮选优化试验研究
高瑞琢1，李文超1，季玉兴2，孔令安2，赵永强3*，张帅1，周海涛1
- 作者单位：
- （1. 青岛金星矿业股份有限公司；2. 山东黄金冶炼有限公司；3. 山东科技大学能源与矿业工程学院）
基金项目：
- 山东省高等学校青创科技支持计划项目（2023KJ303）
详细信息：
- 作者简介：
- 高瑞琢（1987—），男，工程师，从事选矿工艺和技术管理工作；E⁃mail：gaoruizhuo@163. com
- 通讯作者：
- 赵永强（1992—），男，讲师，博士，从事矿产资源综合利用研究工作；E⁃mail：zhaoyq@sdust. edu. cn
- PDF下载
Experimental study of grindability and flotation optimization on a gold ore from Shandong Province
- English Author：
Gao Ruizhuo¹, Li Wenchao¹, Ji Yuxing², Kong Ling’an², Zhao Yongqiang³, Zhang Shuai¹, Zhou Haitao¹
- Unit：
- （1. Qingdao Jinxing Mining Co., Ltd.; 2. Shandong Gold Smelting Co., Ltd.; 3. College of Energy and Mining Engineering, Shandong University of Science and Technology）
- 摘要
- 在线预览
- 参考文献
摘要:
山东某金矿因易选易处理金矿资源逐渐枯竭，入选品位不断下降，故采用混合不同矿脉金矿资源的方式配矿，但产品指标波动较大。为查明原因，开展工艺矿物学研究，并进行了可磨性及浮选优化试验。试验结果表明：混合矿金品位为 3.45 g/t；金矿物主要与黄铁矿紧密共生，以包裹金为主，少量呈连生状。通过邦德球磨功指数试验发现，混合矿样功指数Wib为 23.36 kW·h/t，显著高于原单一矿脉矿样。在丁基黄药用量 180 g/t、丁铵黑药用量 2 g/t、2号油用量 30 g/t、磨矿细度-0.074 mm占 60.32 %的条件下，经一次粗选，二次精选，三次扫选流程，获得金品位 53.23 g/t的精矿，金回收率从 90.08 %提升至 94.11 %。同时，丁铵黑药用量试验发现，丁铵黑药用量较大时，泡沫较丰富，导致浮选操作难度增加。
关键词:
金矿；邦德球磨；功指数；嵌布特征；浮选；混合矿；药剂制度
Abstract:
With the gradual depletion of easily separated and processed gold ore resources in a gold deposit inShandong Province, and the continuous decline in head grade, a blending strategy involving gold resources from differentore veins was adopted. However, product indices exhibited large fluctuations. To determine the cause, a process mineralogystudy was conducted, along with grindability and flotation tests. The test results showed that the blended ore had a goldgrade of 3.45 g/t. Gold minerals mainly occurred in close association with pyrite, predominantly as inclusions, with asmall proportion as intergrowths. Bond ball mill work index tests indicated that the ore sample had a work index（Wib）of 23.36 kW·h/t, significantly higher than that of the original single⁃vein ore sample. Under the conditions of 180 g/t ofxanthate, 2 g/t of dithiophosphate, 30 g/t of No. 2 oil, and a grinding fineness of −0.074 mm accounting for 60.32 %, aone rougher-two cleaner-three scavenger flowsheet produced a concentrate with a gold grade of 53.23 g/t, and therecovery rate increased from 90.08 % to 94.11 % . In addition, tests on the dithiophosphate dosage showed that theamount should not be excessive; an excessive dosage led to abundant froth, increasing the difficulty of the flotationoperation.
Keywords:
gold ore; Bond ball mill; work index; distribution characteristics; flotation; blended ore; reagent regime
