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Manganese is a strategically important metal in industry and human life. It is widely used for production of steel, non-ferrous alloys, dietary additives, fertilizers, dry cell batteries, paints and Hydrometallurgy Equipment. With the rapid growing demand for manganese, rich manganese ores are being overexploited, leading to a sharp depletion of them. However, low-grade manganese ores have not been utilized effectively due to unimproved ore-dressing technology and backward equipment. In recent years, with a better understanding of the complex beneficiation process and the introduction of new technology, utilization of low grade ores has received increasing attention.
In order to utilize low-grade manganese ore resources effectively, a hydrometallurgical process was developed for manganese extraction in dilute sulfuric acid medium, and the kinetics of leaching manganese was also investigated. At room temperature, manganese from low-grade manganese carbonate ores was extracted by sulfuric acid leaching without reductants.
During the extracting process, single-factor analysis method was used to evaluate the effects of grinding fineness, sulfuric acid concentration, liquid-to-solid ratio, agitation rate and leaching time on the leaching efficiencies of Mn and Fe.

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The Hydrometallurgy Equipment is a dewatering machine designed to concentrate sludge by means of progressive compression between two permeable belts. The "low pressure" zone of the hydrometallurgy equipment features the upper and lower belt converging to exert pressure on the sludge. A "high pressure" zone consists of 5 or 7 rolls around which the two belts are pressed. As the sludge is processed, the pressure exerted gradually increases to produce a high dry value in the final cake. The processed cake is removed from the hydrometallurgy equipment by doctor blades.
Pure water might not be the first issue that comes to mind when you think of the mining and hydrometallurgy industries, but it’s crucial for their operational success. Both mining and hydrometallurgy extract minerals from water in huge quantities, albeit with different mechanisms. Mining companies have historically created huge amounts of wastewater that contaminates the environment, and reverse osmosis filters allow that water to be reclaimed and purified before releasing it back to the environment. Similarly, hydrometallurgy involves removing gold and other precious metals from seawater through a process called dewatering; and industrial reverse osmosis simplifies that process while reducing the wastewater production.

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