VACUUM PROCESSING OF GOLD-BEARING CLAY MATERIALS

IF 0.7 Q4 THERMODYNAMICS

Interfacial Phenomena and Heat Transfer Pub Date : 2019-01-01 DOI:10.1615/interfacphenomheattransfer.2019030520

A. Fedoseev, G. Sukhinin, I. Yarygin, V. Prikhodko, S. Novopashin

引用次数: 0

Abstract

The influence of vacuum on a spherical clay sample is investigated via numerical simulation and experiment. The temporal and radial dependences of the temperature and mass of these samples were measured in the vacuum drying process. The numerical model in which the measurements were conducted calculates the moisture and heat transfer equations, where the effective coefficients of thermal conductivity and diffusion were set equal to the coefficients of a moist porous medium. Calculations were performed for various initial and boundary conditions. The data obtained on the temperature and moisture content distributions had sufficient deviations from the experimental data; however, both described important qualitative distribution features. The results of the current paper will help in determining the conditions of effective clay disintegration, which will facilitate the extraction of gold from gold-bearing clays.

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含金粘土材料的真空加工

通过数值模拟和实验研究了真空对球形粘土试样的影响。在真空干燥过程中测量了这些样品的温度和质量的时间和径向依赖性。在进行测量的数值模型中，计算了水分和热量传递方程，其中有效导热系数和扩散系数被设置为等于潮湿多孔介质的系数。对各种初始条件和边界条件进行了计算。所得的温度和水分分布数据与实验数据有足够的偏差;然而，两者都描述了重要的定性分布特征。本文的研究结果将有助于确定粘土有效崩解的条件，这将有助于从含金粘土中提取金。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Interfacial Phenomena and Heat Transfer THERMODYNAMICS-

CiteScore

1.70

自引率

40.00%

发文量

期刊介绍： Interfacial Phenomena and Heat Transfer aims to serve as a forum to advance understanding of fundamental and applied areas on interfacial phenomena, fluid flow, and heat transfer through interdisciplinary research. The special feature of the Journal is to highlight multi-scale phenomena involved in physical and/or chemical behaviors in the context of both classical and new unsolved problems of thermal physics, fluid mechanics, and interfacial phenomena. This goal is fulfilled by publishing novel research on experimental, theoretical and computational methods, assigning priority to comprehensive works covering at least two of the above three approaches. The scope of the Journal covers interdisciplinary areas of physics of fluids, heat and mass transfer, physical chemistry and engineering in macro-, meso-, micro-, and nano-scale. As such review papers, full-length articles and short communications are sought on the following areas: intense heat and mass transfer systems; flows in channels and complex fluid systems; physics of contact line, wetting and thermocapillary flows; instabilities and flow patterns; two-phase systems behavior including films, drops, rivulets, spray, jets, and bubbles; phase change phenomena such as boiling, evaporation, condensation and solidification; multi-scaled textured, soft or heterogeneous surfaces; and gravity dependent phenomena, e.g. processes in micro- and hyper-gravity. The Journal may also consider significant contributions related to the development of innovative experimental techniques, and instrumentation demonstrating advancement of science in the focus areas of this journal.