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How Does a Sand Washing Module Work?

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Sand Washing Modules are commonly used in mining and different construction applications. These typically include washing, dewatering, and recovering fine sand. In order to understand both what a sand washing module is and what it is used for, we must first establish what a sand washing plant is and the specific functions it provides. The big question is: What is a Sand Washing Plant and how does it work?

Sand Washing Plants are traditionally used to get sand from a raw state to a finished state and there are a considerable variety of processes to do this. Sizing is the process by which raw feed is screened into appropriate fractions that is suitable for both products produced and the downstream process. Vibratory Screens are usually used in this step. The objective of feed preparation is to bring all materials into suspension and to break down any clay materials along with removing surface contamination. Then, Slurry Pumps are used to transfer slurry from one plant to another. This means that pumps are used to reduce the number of sell-able materials lost. The more materials lost, the more money it costs you. That is why slurry pumps are usually the go-to over gravity fed units. Another important step is the Desliming of suspended clays. The purpose of this step is to have the highest classification efficiency possible. If there is a large amount of suspended clays or other materials, then it can lead to a loss of sell-able materials and a creation of dirty products. Usually, cyclones are used to de-slime because they have a high efficiency in classification. Occasionally, a simple washing is all that is needed to create a final product. Dewatering and Densifying is used when equipment needs diluted slurry to be concentrated cyclones or separators are used to densify the material. Separators are typically made to dial in and underflow local density. Dewatering screens are usually used for dewatering because they typically result in the least amount of moisture content. In sand washing, partials need to be separated from one another based on either specific gravity or certain size. This usually involves using a classification tank. Organic Removal and Deligniting is the process of organizing materials based on their specific gravity. Water Recovery is arguably the most important step. A water recovery circuit is used to recover water for reuse. This is typically the most cost-effective storage method thus, a dedicated water tank is used to reduce the percolation and evaporation to reduce loss associated with ponds. These tanks are invaluable because they also save on the power requirement needed to pump water out and back. Lastly, a filter press is usually used to finish the sand washing process and put waste solids in a position that is both stack-able and conveyable. It is important to monitor this whole process to troubleshoot any problems that could arise. This is known as sampling. Sampling also allows workers to process changes that help eliminate waste and improve the quality of products. Hence, every system requires monitoring and sampling.

As you can see, sand washing is a very complex yet guided system. Thus, it comes in many forms and covers a wide range of industries. There are multiple products that are produced and numerous different industries that utilize this process. There are also multiple different types of sand washing modules that can be used to achieve your goal.


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