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焦家金矿全尾砂絮凝浓密试验研究
- 作者：
何潇亮1，肖崇春1，蔚登峰2，寇云鹏3，陈秋松4，邱剑辉5*
- 作者单位：
- （1. 飞翼股份有限公司；2. 山东黄金矿业（莱州）有限公司焦家金矿；3. 山东黄金集团有限公司充填工程实验室； 4. 北京科技大学资源与安全工程学院；5. 中南大学资源与安全工程学院）
基金项目：
- 国家自然科学基金青年项目（52104156）
详细信息：
- 作者简介：
- 何潇亮（1985—），男，工程师，研究方向为矿山充填与矿山机电；E⁃mail：251703699@qq. com
- PDF下载
Experimental study on flocculation and thickening of ungraded tailings from the Jiaojia Gold Mine
- English Author：
He Xiaoliang¹, Xiao Chongchun¹, Wei Dengfeng², Kou Yunpeng³, Chen Qiusong⁴, Qiu Jianhui5
- Unit：
- （1. Feiyi Co., Ltd.; 2. Jiaojia Gold Mine, Shandong Gold Mining（Laizhou）Co., Ltd.; 3. Backfilling Engineering Laboratory of Shandong Gold Group Co., Ltd.; 4. School of Resources and Safety Engineering, University of Science and Technology Beijing； 5. School of Resources and Safety Engineering, Central South University）
- 摘要
- 在线预览
- 参考文献
摘要:
针对焦家金矿全尾砂处理中絮凝剂单耗高、底流浓度不稳定等问题，通过静态絮凝沉降、动态浓密及半工业深锥浓密试验，系统研究了全尾砂絮凝浓密影响规律及优化工艺。结果表明：静态试验中，阴离子型絮凝剂K739在矿浆浓度 12 %、添加量 15 g/t条件下沉降效果最优，底流浓度显著提升，絮凝剂过量会导致絮团蓬松化并增加沉降阻力；动态试验中，处理量为 0.6 t/（m²·h）时，底流浓度达 67.66 %，溢流水含固量低于 200×10-6，延长压缩时间可进一步提高底流浓度；半工业试验验证了处理量与底流浓度的负相关关系，综合考虑溢流水含固量不高于 200×10-6，推荐浓密机处理量为 0.7 t/（m²·h）。通过优化矿浆浓度、絮凝剂用量及处理量，并增加浓密机高度以延长压缩时间，可实现底流浓度 72 %以上的稳定控制，为矿山尾砂膏体充填和资源化利用提供了理论与技术支撑。
关键词:
全尾砂；深锥浓密；絮凝沉降；动态浓密；膏体充填；资源化利用
Abstract:
To address the issues of high unit consumption of flocculant and unstable underflow concentration in thetreatment of ungraded tailings at the Jiaojia Gold Mine, a series of static flocculation-settling tests, dynamic thickeningtests, and semi⁃industrial deep⁃cone thickening tests were conducted to systematically investigate the influencingfactors and optimize the flocculation-thickening process. Results show that in static tests, the anionic flocculant K739produced optimal settling performance at a pulp concentration of 12 % and a dosage of 15 g/t, significantly improvingunderflow concentration. However, overdosing led to loose floc structures and increased settling resistance. In dynamictests, when the treatment rate was 0.6 t/（m²·h）, the underflow concentration reached 67.66 %, with the overflow solidcontent below 200×10⁻⁶. Prolonging the compression time further improved the underflow concentration. Semi⁃industrialtests confirmed a negative correlation between treatment rate and underflow concentration. Considering the requirementthat overflow solid content should not exceed 200×10⁻ ⁶ , a recommended thickener throughput of 0.7 t/（m²·h）wasproposed. By optimizing slurry concentration, flocculant dosage, and treatment rate, and by increasing thickener heightto extend compression time, stable underflow concentrations above 72 % can be achieved. This provides both theoreticaland technical support for paste backfilling and resource⁃based utilization of mine tailings.
Keywords:
ungraded tailings; deep⁃cone thickening; flocculation and settling; dynamic thickening; paste backfilling;resource⁃based utilization
