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Fecha: 11/13/2020 7:15:11 PM Vistas: 337 |
The topics of dust suppression and dust prevention often dominate the space of dust control in mining and industrial environments. However, there is another alternative when neither suppression or prevention measures are practical or ideal to implement. Dust collection involves the use of a dust extraction system (AKA a dust vacuum) to collect dust from drilling operations using a large liquid ring vacuum pump. The incoming air and dust mixture is separated by means of a large collection hopper acting as a cyclonic separator and later a series of bag filters. Such extraction systems are ideal for use in a variety of situations. For example: When moisture of any kind can’t be used for dust suppression or dust prevention purposes: This is particularly prevalent in the case of diamond mining because kimberlite swells when moisture is added to it. Therefore a high or low pressure watering system can’t be used to control dust from drilling activities, otherwise the swollen kimberlite will “bite” the drill components and break them. When dust emitted from extraction activities contains particles of valuable raw metals e.g. platinum: Dust vacuums allow for such particles to be collected in a batch or continuous system. The collected dust, along with the particles, can then be further refined and recovered. In some cases, a binding agent (such as Dust-A-Side’s HydroPlus) can be added to the collected dust to enable storage, ready for further refining. The addition of HydroPlus facilitates the formation of pellets in the collection hopper. The pellets are hard enough to survive discharge and further handling without becoming dust sources later in the process. |