High separation efficiency
1. Powerful centrifugal force to achieve rapid separation
Decanter centrifuge uses high-speed rotating drum and screw propeller to generate strong centrifugal force, the separation factor can be up to thousands or even tens of thousands, far more than the traditional way of gravity settling and so on. For example, when dealing with construction mud, it can quickly separate the sediment from the slurry water, and the hourly processing capacity can reach several cubic metres to tens of cubic metres, which greatly reduces the processing time. Take the mud treatment of a construction site as an example, after the use of decanter centrifuge, it originally takes several days to finish the mud treatment, now a few hours to complete the initial separation, significantly improving the construction efficiency.
2. Continuous working mode to ensure efficient operation
It adopts continuous feeding and discharging mode, the slurry can continuously enter the centrifuge, and the separated solids and liquids are discharged in time, which avoids the operation of intermittent equipment with frequent stopping and unloading and ensures the coherence of the treatment process. In contrast, some traditional filtration equipment, each unloading and reloading need to spend a lot of time, while the decanter centrifuge has obvious advantages in this regard, can significantly improve the overall processing efficiency.
Strong adaptability
1. Wide adaptation to the type and nature of slurry
Decanter centrifuge can deal with a variety of types of slurry, whether it is mining tailings slurry (large particles), or ceramic production slurry (fine particles) and so on can be effectively dealt with. It can also handle a wide range of slurry consistency, from thin slurry to thick slurry. For example, in the field of mining, the nature of the mud produced by the mining of different ores varies greatly, but the decanter centrifuge can be adjusted according to the actual situation to ensure the separation effect.
2. Compatibility with solid particle shape and density differences
For different shapes (such as spherical, flaky, irregular shape) and density of solid particles, under the action of centrifugal force can be based on their own physical characteristics and liquid separation. This makes it suitable for slurry treatment in many industries such as chemical industry and environmental protection. For example, in the chemical industry, a variety of chemical reactions produced after the slurry composition is complex, solid particles of various traits, decanter centrifuge can still achieve effective solid-liquid separation.
High degree of automation
1. Advanced control system for real-time monitoring of operating parameters
Modern decanter centrifuge is equipped with advanced automation control system, through the sensor real-time monitoring drum speed, screw propeller differential speed, feed flow and pressure and other parameters, and clearly displayed on the operating panel. The operator can intuitively understand the running status of the equipment and find problems in time. For example, in a large-scale slurry treatment plant, the operator can view the operating parameters of multiple decanter centrifuges at any time through the display screen in the central control room to achieve remote monitoring.
2. Automatic adjustment function to ensure stable operation
The control system can automatically adjust the running status of the equipment according to the preset parameters. When the feed flow changes, automatically adjust the drum speed and spiral differential speed to ensure stable separation effect. At the same time, with fault alarm function, such as motor overload, vibration is too large will immediately issue an alarm and take protective measures, such as automatic shutdown, to reduce the risk of equipment damage. This greatly reduces the need for manual intervention in actual production, and improves the safety and stability of production.
Small footprint
1. Compact structure saves space
Compared with traditional slurry treatment equipment such as large sedimentation tanks and plate and frame filter presses, the decanter centrifuge has a compact structure. It is a vertical or horizontal cylindrical equipment, which does not need to take up a large area of land for mud settling like a sedimentation tank. Take the slurry treatment workshop of a city sewage treatment plant as an example, if a sedimentation tank is used for treatment, it is necessary to plan a larger site to build multiple sedimentation tanks, while using the decanter centrifuge, it is only necessary to place the equipment and ancillary devices in a smaller space, which can effectively save land resources, and make the layout of the workshop more reasonable.
2. Applicable to scenes with limited space
For enterprises or construction sites with limited space, this advantage of decanter centrifuge is particularly prominent. For example, in some urban centres, construction sites, site space is tight, can not accommodate large-scale slurry treatment equipment, decanter centrifuge can well meet the needs of slurry treatment, while not taking up too much space, to protect the normal progress of construction.
Good environmental performance
1. Effectively reduce environmental pollution
In the process of mud treatment, decanter centrifuge through efficient solid-liquid separation, so that the separated solids can be reasonably disposed of, such as reuse as construction materials, filling materials, etc.; the liquid can be recycled or discharged to meet the standards, reducing the mud pollution of the environment. In the printing and dyeing industry, the pollutant content of the water treated by decanter centrifuge is greatly reduced, and it can be reused in some parts of the printing and dyeing process, which not only reduces the use of fresh water, but also reduces the discharge of printing and dyeing wastewater, which is in line with the environmental protection requirements and helps the enterprise to achieve sustainable development.
2. Compliance with environmental regulations and standards
With the increasingly stringent environmental requirements, the environmental performance of the slurry treatment equipment is increasingly important. Decanter centrifuge in the operation process produces less waste, and less impact on the environment, can meet the requirements of relevant environmental regulations and standards. For example, in some areas of mining projects, must use environmentally friendly slurry treatment equipment, decanter centrifuge because of its good environmental performance has become the first choice, to ensure environmental compliance in the mining process.
Relatively low running costs
1. Although the decanter centrifuge achieves separation by rotating at high speed, due to its efficient separation capacity, it may run for a shorter time than some separation equipment with higher energy consumption, such as vacuum filters, when processing the same amount of slurry, thus saving electricity costs. For example, in a mining company with a large daily slurry output, by comparing the energy costs of using decanter centrifuges and vacuum filters, it was found that the use of decanter centrifuges could save tens of thousands of yuan in electricity expenses per month.
2. Lower maintenance costs
The structure of the equipment is relatively simple, and the main components, such as drums and screw propellers, have a long service life under normal use. Daily maintenance work mainly includes equipment cleaning, lubrication and regular replacement of wear parts, which is relatively easy to carry out and does not require a lot of manpower and material input. This greatly reduces the maintenance cost compared with some complex slurry treatment equipment. For example, the filter cloth of plate and frame filter press needs to be replaced frequently, and the replacement process is cumbersome, while the maintenance of decanter centrifuge is relatively simple, reducing equipment downtime for maintenance and improving the utilisation of equipment.
High solids recovery rate
1. Efficient collection of solid particles
Decanter centrifuge can effectively collect the solid particles in the slurry through the precise screw propeller and drum co-ordination. Under the action of centrifugal force, the solid particles are pushed to one end of the drum and discharged, with high solid recovery rate. In mining mud treatment, high solids recovery means that the useful components in the ore can be maximised and resource wastage can be reduced. For example, in the mud treatment of a gold mine, after using the decanter centrifuge, the recovery rate of gold and other precious metals has been significantly improved, which has brought considerable economic benefits to the enterprise.
2. Meet the requirements of resource management
For the need for strict management of solid waste industry, high solid recovery rate to help meet the environmental protection and resource management requirements. Such as in some areas of high environmental requirements, enterprises must ensure that the mud treatment process in the solids recovery rate reaches a certain standard, in order to reduce the impact on the environment and waste of resources, decanter centrifuge can play an important role in this regard.
High solids content of treated sludge cake
1.Formation principle of high solids content sludge cake
Under the action of strong centrifugal force, the liquid in the slurry is fully separated out, and the solid particles are tightly aggregated to form the mud cake with relatively high solid content. This is an important feature of the decanter centrifuge, which makes the treated sludge cake have better subsequent processing performance. For example, in the field of sludge treatment, after decanter centrifuge treatment of mud cake solid rate can reach a certain standard, compared with some other treatment methods, such as natural sedimentation, etc., the solid rate of the mud cake has been significantly improved.
2. Favourable for subsequent treatment and disposal
Higher solids content of mud cake is favourable for subsequent solid treatment, such as transportation, stacking and reuse of mud cake. The volume of high solid content cake is relatively small, which can reduce the transport cost. It is also more convenient in the disposal process such as sludge landfill or incineration, which reduces the difficulty and cost of disposal. For example, in a municipal wastewater treatment plant, when treated high solids sludge cake is disposed of in a landfill, the efficiency of the landfill site is improved due to the reduced volume, and the number of transport trips is reduced, which reduces the transport costs and the impact on the environment.
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