Effective tailings dewatering can not only reduce the volume of tailings, lower transportation and storage costs, but also minimize environmental impact, achieving efficient resource utilization and sustainable development. This article will summarize the commonly used tailings dewatering equipment in the current market, demonstrating how these devices can easily reduce the moisture content of tailings to below 15%, providing strong support for the development of the mineral processing industry.
As a professional concentration equipment manufacturer, Xinhai has successfully independently developed various models of rake type thickeners, deep cone thickeners, and inclined plate thickeners, achieving free settling within the range of 20-3500 square meters, fully meeting the production needs of various ores and scales.
(1)Efficient transformation of thickener
Applicable occasions: Suitable for situations with large processing capacity and low product concentration, mainly used for concentrate concentration and tailings dewatering in mineral processing plants.
Innovative design: Xinhai has developed an efficient transformation concentrator, which replaces the traditional internal overflow weir with an external overflow weir design. This design increases the settling area, providing more space for the slurry to settle during the concentration process and improving the concentration efficiency. Meanwhile, the overflow weir design is less prone to material blockage, reducing the frequency and cost of equipment maintenance.
Performance advantage: After improvement, the high-efficiency transformation of the concentrator has a large processing capacity, which can meet the production needs of large-scale beneficiation plants. The low turbidity of the overflow indicates that the solid particle content in the discharged supernatant is low, which improves the recovery and utilization rate of water resources. High discharge concentration is beneficial for subsequent dehydration treatment and reduces overall dehydration costs.
(2)Deep cone thickener
Main application: The high-efficiency deep cone multi cone concentrator is mainly used for high concentration concentration concentration of minerals in mineral processing plants, and can also be used for concentration of other slurry with fine particles and low density, as well as wastewater treatment.
Technical features: Xinhai's independently developed deep cone concentrator has a large angle bottom cone, which results in high bottom flow concentration. At the same processing capacity, a high bottom flow concentration means that it can reduce the load on subsequent dehydration equipment and improve dehydration efficiency. Meanwhile, the deep cone concentrator has a small footprint and is suitable for beneficiation plants with limited space. High degree of automation enables unmanned operation and reduces labor costs. In addition, it also has the characteristic of energy saving, which meets the requirements of energy conservation and environmental protection.
(3)Inclined plate thickener
Application scope: The inclined plate concentrator is mainly used for clarifying and concentrating flotation tailings, and can also be used in other industries to process various slurries containing solid particles.
Unique design: A stirring device is installed in the center of the inclined plate concentrator casing to prevent uneven sedimentation of the slurry during the concentration process and improve the concentration effect. A vibrator is installed on the outer wall of the cone bucket area, which accelerates the concentration of flocs while preventing blockage of the slurry. Through the synergistic effect of the mixing device and vibrator, the inclined plate concentrator can operate stably and efficiently, ensuring the concentration effect of tailings.
As the next dehydration process after the concentration operation, Xinhai has also put a lot of effort into the filtration equipment. It has developed and improved multiple filter machines and dehydration screens, and successfully applied for multiple national patents, fully ensuring that the concentration of refined tailings products meets the standard. The moisture content of the concentrate can be reduced from 45-60% to about 10-18%.
(1)Efficient high-frequency dehydration screen
Widely used: Xinhai high-efficiency high-frequency dewatering screen is widely used in the filtration and dewatering equipment industry, including tailings dry discharge, concentrate dewatering, slurry concentration, chip removal, and carbon slurry separation.
Advantages and features: It is particularly suitable for processing fine-grained minerals and can effectively separate water from fine-grained minerals. It can also be combined with Xinhai XC series cyclones for higher and more complete dehydration efficiency. By combining with cyclones, an efficient dewatering system has been formed, which can meet the dewatering needs of minerals with different particle sizes and can be widely used in tailings dry discharge, concentrate dewatering and other operations.
(2)Disc vacuum filter machine
Applicable object: The disc filter is suitable for processing fine-grained concentrates containing mineral mud. It is mainly used for dewatering fine materials such as flotation tailings and non-ferrous metal concentrates, and can also be used for solid-liquid separation in metallurgy, chemical industry, petroleum, wastewater treatment and other fields.
Working principle: Using vacuum suction to remove water from the slurry, leaving solid particles on the filter disc to form a filter cake. Remove the filter cake through a scraper to achieve solid-liquid separation. The disc vacuum filter has the advantages of large filtration area, strong processing capacity, and good dehydration effect.
(3)Ceramic vacuum filter machine
Widely applicable fields: Xinhai ceramic filter can be widely used for dewatering concentrates and tailings of non-ferrous metals, rare metals, ferrous metals, non-metallic minerals, etc. in mines, dewatering of oxides, electrolytic slag, leaching slag, slag in the chemical industry, and environmental protection of sewage, sludge and waste acid treatment.
Unique filtration medium: Using ceramic filter plates as the filtration medium, it has a microporous structure and high filtration accuracy, which can effectively intercept solid particles while allowing moisture to pass through. Ceramic filter plates have the characteristics of corrosion resistance, high temperature resistance, and high mechanical strength, and are suitable for various harsh working environments.
(4)Box type filter press
Working mode: Chamber filter press is a dehydration equipment that uses the pressure of slurry pump to make the liquid pass through the filter cloth.
Performance characteristics: The box filter press can generate high pressure, forcing the water in the slurry to be squeezed out, forming a filter cake with low moisture content. It has the advantages of high filtration pressure, good dehydration effect, and simple operation. Suitable for dehydration of minerals of various particle sizes, especially for fine-grained and viscous minerals, it has a good dehydration effect.
