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efficient calcium carbonate high efficiency concentrator in singapore

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Crushing Plant

Crushing Plant

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sala vf series vertical froth pumps - metso outotec

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sala vf series vertical froth pumps - metso outotec

The vertical froth pumps utilize the same principle as hydrocyclone separation where air is separated from the slurry in a vortex created by the impeller rotation and the tangential inlet to the pump’s conical sump

Sala VF froth pumps are often used in applications that involve handling of air entrained slurries, such as flotation froth in base metal concentrators, phosphate and apatite washing plants and calcium carbonate upgrading plants

best management practice #10:cooling towermanagement

Cooling towers dissipate heat from recirculating water used to cool chillers, air conditioners, or other process equipment to the ambient air. Heat is rejected to the environment from cooling towers through the process of evaporation. Therefore, by design, cooling towers use significant amounts of water

Blowdown: When water evaporates from the tower, dissolved solids (such as calcium, magnesium, chloride, and silica) remain in the recirculating water. As more water evaporates, the concentration of dissolved solids increases. If the concentration gets too high, the solids can cause scale to form within the system. The dissolved solids can also lead to corrosion problems. The concentration of dissolved solids is controlled by removing a portion of the highly concentrated water and replacing it with fresh make-up water. Carefully monitoring and controlling the quantity of blowdown provides the most significant opportunity to conserve water in cooling tower operations

Basin leaks or overflows: Properly operated towers should not have leaks or overflows. Check float control equipment to ensure the basin level is being maintained properly, and check system valves to make sure there are no unaccounted for losses

A key parameter used to evaluate cooling tower operation is "cycle of concentration" (sometimes referred to as cycle or concentration ratio). This is determined by calculating the ratio of the concentration of dissolved solids in the blowdown water compared to the make-up water. Because dissolved solids enter the system in the make-up water and exit the system in the blowdown water, the cycles of concentration are also approximately equal to the ratio of volume of make-up to blowdown water

best management practice #10:cooling towermanagement

From a water efficiency standpoint, you want to maximize cycles of concentration. This will minimize blowdown water quantity and reduce make-up water demand. However, this can only be done within the constraints of your make-up water and cooling tower water chemistry. Dissolved solids increase as cycles of concentration increase, which can cause scale and corrosion problems unless carefully controlled

In addition to carefully controlling blowdown, other water efficiency opportunities arise from using alternate sources of make-up water. Water from other facility equipment can sometimes be recycled and reused for cooling tower make-up with little or no pre-treatment, including: