Asynchronous flotation of scheelite, wolframite, and cassiterite: A new flotation collector and process

IF 9 1区工程技术 Q1 ENGINEERING, CHEMICAL

Separation and Purification Technology Pub Date : 2025-10-04 DOI:10.1016/j.seppur.2025.135545

Junhao Fu, Haisheng Han, Wei Sun, Zhifeng Zhang

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引用次数: 0

Abstract

The collective enrichment of scheelite, wolframite, and cassiterite remains a significant challenge. This study investigates the distinct flotation behaviors of these minerals under Pb-BHA (lead complex of benzohydroxamic acid) through single-mineral flotation experiments. Quantum chemical analysis provides initial insights into the difference in their flotation rates based on their crystal structures. An asynchronous flotation process was designed to replace the synchronous process. And a new collector, Pb-MBHA (lead complex of P-methylbenzohydroxamic acid), was developed to enhance mineral recovery. The new process leverages the differential flotation kinetics of the three W Abstract Image

Sn minerals through the transition from a single- to dual-process, and employs stage-tailored pH conditions and flotation reagents to produce distinct concentrates. The new process and collector, implemented in a 1500 t/d concentrator, significantly increased the recovery rates of tungsten and tin. The recovery rate of WO₃ increased from 70 % to 78 %, while the recovery rate of Sn increased from 9 % to 22 %, generating an additional profit of $18,661.67/d. this research provides a very meaningful new approach to the comprehensive recovery of W Abstract Image

Sn minerals in complex W Abstract Image

Sn deposits

Abstract Image

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白钨矿、黑钨矿和锡石的异步浮选：一种新的浮选捕收剂和工艺

白钨矿、黑钨矿和锡钨矿的集体富集仍然是一个重大挑战。本研究通过单矿物浮选实验，考察了这些矿物在Pb-BHA（苯甲羟肟酸铅配合物）作用下的不同浮选行为。量子化学分析提供了基于晶体结构的浮选率差异的初步见解。设计了一种异步浮选工艺来代替同步浮选工艺。并开发了一种新型捕收剂Pb-MBHA（对甲基苯甲氧肟酸铅配合物），以提高矿物回收率。新工艺利用了三种WSn矿物的不同浮选动力学，从单一工艺过渡到双工艺，并采用阶段定制的pH条件和浮选试剂来生产不同的精矿。新工艺和捕收剂在1500 t/d的选矿厂中实施，显著提高了钨和锡的回收率。WO3的回收率从70 %提高到78 %，Sn的回收率从9 %提高到22 %，产生额外的利润18661.67美元/天。该研究为复杂WSn矿床中WSn矿物的综合回收提供了一条非常有意义的新途径

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来源期刊

Separation and Purification Technology 工程技术-工程：化工

CiteScore

14.00

自引率

12.80%

发文量

2347

审稿时长

43 days

期刊介绍： Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.