A new approach to analyzing the type of moisture inside the filter cake of hematite concentrate

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Izadi Yazdan Abadi Mohsen; Abdollahi Mahmoud; Khalesi Mohammad Reza; Panahi Ebrahim

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Journal Paper

Paper Information

Journal: International Journal of Mining and Geo-Engineering Year:2023 | Volume:57 | Issue:1 Page(s): 35-40

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Information Journal Paper

Title

A new approach to analyzing the type of moisture inside the filter cake of hematite concentrate

Author(s)

Izadi Yazdan Abadi Mohsen | Abdollahi Mahmoud | Khalesi Mohammad Reza | Panahi Ebrahim | Issue Writer Certificate

Keywords

Vacuum filter

Magnetite concentrate filtration

Void fraction

Iron Concentrate

Abstract

Filters are widely used for dewatering in the mining industry. In general, different parameters affect vacuum filtration, such as solid percentage, vacuum level, particle size distribution, filter cloth, and chemical additives. These parameters can influence filtration properties such as cake moisture, throughput, and filter cloth lifetime. Moisture and throughput usually are used to determine the quality of filtration. In this study, new variables were used to express the filtration and characteristics of filter cake at a microscopic scale. The quality of the filter cake can be precociously analyzed using the Void fraction and density of the filter cake. The present study aimed to propose some new variables to properly analyze the filtration process, improve the filtration rate, and decrease the cake moisture of Gol-E Gohar iron ore concentrate. In this regard, a series of filtration experiments were implemented using laboratory-scale bottom top-feed Vacuum filters. The results showed that an increase in the solid percentage decreased the Void fraction from 0.45 to 0.40 and increased cake density from 0.30 to 0.33 gr.cm-3, respectively. Increasing the particle size increased the Void fraction from 0.415 to 0.43. Furthermore, the type of structural or capillary moisture of the filter cake could be determined using a Void fraction.

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