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Flotation Recovery of Barite in Waste Drilling Fluids Using Novel Inhibitors

Year: 2025

Type: article

Abstract: The primary constituents of discarded drilling fluid are barite, quartz, and calcite. However, during the flotation process, these three minerals exhibit similar physicochemical properties, complicating the separation and recovery of barite. To address this, a novel composite inhibitor (WFF) was developed, consisiting of guar gum (GG), β-cyclodextrin, and ferrous sulfate (FeSO4), using sodium dodecyl sulfate (SDS) as the collector for flotation. Through reverse flotation experiments, barite concentrate with a density of 4.11 g/cm3 and a purity of 91.86% was successfully recovered from the discarded drilling fluid. In addition, the mechanism of action of WFF was elucidated using infrared spectroscopy, X-ray diffraction analysis, X-ray fluorescence spectroscopy, adsorption capacity measurement, wettability, and surface tension tests. The results indicated that WFF selectively adsorbed on quartz and calcite, enhancing the adsorption performance of SDS on these two minerals, while barely affecting the flotation performance of barite. This enabled efficient flotation recovery of barite from discarded drilling fluid.

Source: DOAJ (DOAJ: Directory of Open Access Journals)

DOI: 10.3969/j.issn.1000-6532.2025.02.012

Authors: Duoqi WANG, Shuixiang XIE, Fei CHEN, Xiaoyu LI, Yuanpeng CHENG, Shanfa TANG

Institutions: Yangtze University, Key Laboratory of Drilling and Production Engineering for Oil and Gas, Hubei Province, China National Petroleum Corporation (China), Chongqing Medical University

Language: English

Topic: Minerals Flotation and Separation Techniques

Subfield: Water Science and Technology

Field: Environmental Science

Domain: Physical Sciences

SDG: Responsible consumption and production

Open Access status: green

OpenAlex ID: W6947809836

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