On-line moisture determination of ore concentrates: A review of traditional methods and the introduction of a novel solution
| Autor: | P. Cancilla, F. Rosenblum, D. Roy |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Measure (data warehouse)
Automatic control Moisture business.industry Mechanical Engineering Metals and Alloys Ore concentrate Mineralogy General Chemistry Geotechnical Engineering and Engineering Geology Moisture sensor Control and Systems Engineering Metallic materials Line (geometry) Materials Chemistry Process engineering business Water content |
| Zdroj: | Mining, Metallurgy & Exploration. 20:73-80 |
| ISSN: | 2524-3470 2524-3462 |
| DOI: | 10.1007/bf03403136 |
| Popis: | The manual method of determining the moisture content of mineral concentrates used by mineral-processing plants is inadequate and cannot provide the timely information required for automatic control. The costs associatedwith transporting and handling concentrates still represent a major portion of the overall treatment price. A novel on-line determination system for ore concentrate moisture could replace the normally tedious classic manual procedure. The task of moisture determination is still done in the classsic loss-in-weight technique using uncontrolled procedures. Generally, it is acceptable to have ore concentrate moisture content vary within a range of 7% to 9%. However, delays in manually achieving reliable feedback on the moisture content often result in the moisture varying from 5% to 12% before corrective actions can be made. This paper includes a comparison of the traditional and widely available commercial methods for determining moisture content in granular materials by applying physical principles and properties to measure moisture content. Discussed is a unique and promising on-line moisture sensor that uses the physical principle of drag force derived from the interstitial liquid between the particles of the material under measurement (Schiffer et al., 1999). Also included are preliminary observations of two measurement applications describing the sensor installation challenges. The observations give indications of the usefulness of the proposed method of converting the dragforce, relating from the mechanical properties of the material itself, into the determination of the moisture content. |
| Databáze: | OpenAIRE |
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