利用聚合物粘合剂聚结氧化铜矿石

IF 1.3 4区工程技术 Q4 CHEMISTRY, PHYSICAL

Physicochemical Problems of Mineral Processing Pub Date : 2023-12-09 DOI:10.37190/ppmp/176682

Mohammad Hasan Golpayegani, Kimia Kiaei

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引用次数: 0

摘要

渗透率降低是堆浸的一个主要挑战，主要是由于随着浸出剂移动的细颗粒的积累，导致堆内死区和沟道的形成。在Aria铜选矿厂，铜品位为1.4%的0 ~ 2mm分选段在堆载前进行预分离，不作进一步处理。本研究考察了在使用0 - 2mm矿石分数的情况下，使用团聚方法提高渗透率的潜力。在团聚过程中使用了矿物化合物，如硅酸钠和硫酸钙，以及非离子、阳离子和阴离子聚合物化合物。通过测定浸渍试验中颗粒间的细迁移率(FMP)来评价颗粒间的结合强度。结果表明，使用非离子型化合物形成的团聚体具有最高的键合强度，FMP为3.89%，是所有化合物中最低的。这种增强的键强度归因于氢键力和范德华力的共同影响。

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Utilization of polymeric binders to agglomerate oxidized copper ore

Permeability reduction is a major challenge in heap leaching, primarily caused by the accumulation of fines that move with the leaching agent, leading to the formation of dead zones and channeling within the heap. In the Aria copper beneficiation plant, the 0–2 mm fraction with a copper grade of 1.4% undergoes pre-separation prior to heap loading without further processing. This study investigated the potential of using the agglomeration method to improve permeability in the case of using the 0–2 mm fraction of ore. Mineral compounds, such as sodium silicate and calcium sulfate, and non-ionic, cationic, and anionic polymer compounds, were used in the agglomeration process. The strength of interparticle bonding was evaluated by measuring the fine migration percentage (FMP) in the soak test. The results revealed that agglomerates produced using non-ionic compounds had the highest bonding strength, with an FMP of 3.89%, the lowest of all the compounds tested. This enhanced bonding strength was attributed to the combined influence of hydrogen bonding forces and van der Waals forces.

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来源期刊

Physicochemical Problems of Mineral Processing CHEMISTRY, PHYSICAL-MINING & MINERAL PROCESSING

自引率

6.70%

发文量

期刊介绍： Physicochemical Problems of Mineral Processing is an international, open access journal which covers theoretical approaches and their practical applications in all aspects of mineral processing and extractive metallurgy. Criteria for publication in the Physicochemical Problems of Mineral Processing journal are novelty, quality and current interest. Manuscripts which only make routine use of minor extensions to well established methodologies are not appropriate for the journal. Topics of interest Analytical techniques and applied mineralogy Computer applications Comminution, classification and sorting Froth flotation Solid-liquid separation Gravity concentration Magnetic and electric separation Hydro and biohydrometallurgy Extractive metallurgy Recycling and mineral wastes Environmental aspects of mineral processing and other mineral processing related subjects.