Results 191 to 200 of about 8,412 (216)
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Microwave roasting of a carbonaceous sulphidic gold concentrate
Minerals Engineering, 2009Gold ores containing carbonaceous matter and sulphidic minerals are generally referred to as double refractory. Extraction of the gold from such ores usually requires an oxidation step to both liberate the ultra-fine gold from the matrix of the sulphides and remove the carbon that preg-robs the dissolved gold. In this investigation, a double refractory
R.K. Amankwah, C.A. Pickles
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Microwave Roasting Pyrite for Removal of the Sulfur and Arsenic
Advanced Materials Research, 2014The application of microwave technique in the roasting pyrite which contained little arsenic was described. The characteristics of microwave absorption of pyrite were investigated. The results indicated that pyrite was a good absorbent of microwave and heated rapidly to high temperature by microwave flied in a short time, causing decomposition and ...
Chun Lin He +3 more
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Microwave roasting of peanuts: Effects on oil characteristics and composition
Nahrung/Food, 2001Roasting of peanuts by microwave heating (MWH) for different periods was studied in comparison with conventional heating method (CHM). The oils extracted from microwave roasted peanuts (MWRP) showed gradual darkening by time of heating. Colour indices of the oil samples were calculated to show the effect of heating on the oil colour.
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A Comparison of Beef Blade Roasts Cooked by Microwave, Microwave-convection and Conventional Oven
Journal of Microwave Power and Electromagnetic Energy, 1987Beef blade roasts were cooked by moist heat in a microwave, microwave-convection, and electric oven by dry heat in an electric oven for comparison of cooking losses, Instron tenderness measurement, time requirement, and sensory evaluation of tenderness, juiciness, connective tissue and flavor.
Paula M. Howat +4 more
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Effect of microwave heating on roasted nut flavor
1995Abstract The microwave oven has opened up a new dimension in food preparation and management. Wherever it is used, a special set of conditions must be developed for best results in flavor, texture, and quality of a final product. In this study, microwave heating is being used to maximize the perception of “fresh roasted nuts.” Headspace analysis was ...
D.E. Zook, C. Macku, D. Deming
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Research on Microwave Roasting of ZnO and Application in Photocatalysis
2016This paper adopts a simple and novel preparation. Taking cellulose as a template, a tubular morphology structure of micro/nano ZnO crystals was obtained by microwave roasting at high temperature. The higher the microwave roasting temperature, the larger the degree of crystallization.
Qin Guo +4 more
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Direct Microwave Roasting of Arsenic-Bearing Pyrite Concentrates
Journal of Microwave Power and Electromagnetic Energy, 2014AbstractArsenic-bearing pyrite was used as an indicator to investigate microwave roasting behavior of pyrite concentrates. Appearance of the microwave roasted sample showed that the irradiation-induced transformation started from a small area of the crucible and gradually advanced to the remainder zone.
Xiu Juan Su +4 more
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Study of Reduction Characteristic on Microwave Magnetizing Roast of Hematite
Advanced Materials Research, 2011In this article, the microwave magnetizing roast process of three kinds of Bayan Obo ore of different Fe-grades were studied experimentally, where microwave as the heat source and the activated charcoal as reductant. The reduction characteristics of hematite changed into magnetite by microwave magnetizing roast were studied analytically under different
Jie Li +3 more
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