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Application of High-Speed Filters in the Steel Industry

DATE:2025-05-17Number of views: Source:LEFILTER

  I. Introduction

During the processing in the steel industry, a large amount of heat is released, and the cooling system plays a crucial role in this process. To ensure the smooth progress of production, a large quantity of cooling water needs to be circulated to carry away this heat and maintain the normal operating temperature of the equipment. However, various problems are prone to occur when the cooling water is recycled. For example, impurities in the water will gradually accumulate in the pipelines and form dirt, and the warm and humid environment also easily breeds microorganisms such as algae. Once these dirt and algae accumulate in large quantities, it is as if the "blood vessels" of the cooling system - the pipelines - are blocked, which will significantly reduce the cooling efficiency and then affect the stable operation of the entire production line. Equipment will also face a higher risk of wear and tear due to poor cooling, and frequent maintenance will become inevitable, which will undoubtedly bring about high costs and the loss of precious production time.

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In this critical link, the high-speed filter is like a "shot in the arm" for the steel cooling process. It can continuously purify the cooling water, accurately intercept all kinds of impurities in the water, and inhibit the growth and reproduction of algae. With its protection, the cooling efficiency of the cooling system can be firmly guaranteed, the production line can always operate smoothly, and the service life of the equipment can be effectively extended. The troubles of costs and time caused by frequent maintenance are also greatly reduced, enabling steel enterprises to focus more on production and improve economic benefits.

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 II. Equipment Parameters

When high-speed filters are applied in the steel industry, they have various parameters that are clearly defined and adapted to the industry's needs.

PURPOSE

They are mainly used for primary water filtration. Through the effective purification of raw water, the water can meet the standards for recycling and satisfy the strict requirements of the steel production cooling process for water quality.

QUANTITY

Usually, two units are equipped. Such a quantity setting can not only meet the large-scale cooling water purification needs of steel mills but also ensure that when one device is under maintenance or other circumstances, the other one can continue to work, guaranteeing the continuous operation of the entire cooling system and preventing production stoppages due to equipment failures.

EQUIPMENT DIAMETER

It reaches 3,600 mm. The relatively large diameter means that there is sufficient space inside to accommodate the filtering components and carry the corresponding amount of water, thus ensuring the high efficiency and stability of the filtering process.

INSTALLATION FORM

The outdoor vertical installation method is adopted. This way is convenient for layout in the open outdoor areas of steel mills. Moreover, the vertical structure is beneficial for the natural flow of water relying on gravity, which, combined with the internal filtering mechanism, can achieve a better filtering effect.

APPLIED INDUSTRY

They are specifically designed for steel mills, fully taking into account the water quality characteristics, flow requirements, and usage environment of the cooling water in the steel production process, and are customized for the steel industry.

SINGLE UNIT PROCESSING CAPACITY

Each device can process 100 - 150 m³ of water per hour, which is sufficient to handle the recycling treatment needs of the cooling water in the steel mill's cooling system, ensuring that the continuous supply of cooling water can be purified in a timely manner and put back into use.

 SUPPLY SCOPE

It not only provides the product equipment itself but also includes services for guiding installation and commissioning. At the same time, relevant drawings and materials will be provided to steel enterprises to facilitate them to have a deeper understanding of the equipment for subsequent maintenance and management. Additionally, corresponding training services will be carried out to help operators master the operation points and maintenance skills of the equipment proficiently.

EQUIPMENT COMPONENTS

Its components include the cylinder, which is the outer shell of the entire filter, playing a role in protecting the internal structure and carrying the water flow; the water distributor can evenly distribute the incoming water flow to ensure the comprehensiveness of filtration; the filter plate is a key supporting structure in the filtering process; the air-water backwashing device can regularly clean the filter media to restore its filtering performance; the base provides a stable support for the entire equipment; the stainless steel filter cap can cooperate with other components to effectively manage the filter media; and the matching flanges facilitate the connection of the equipment with other pipelines, jointly forming a complete and efficient filtering system.

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 III. Equipment Introduction

The various components inside the high-speed filter are ingeniously designed and work together to perform a powerful filtering function. The water distribution device inside the container adopts the multi-channel weir flow type, specifically manifested as four overflow troughs arranged in a radial pattern from the center. This unique arrangement has important significance. During the backwashing process, due to factors such as the steel production environment, there may be filter media with relatively small particles or those that become finer due to long-term wear. The arrangement position of the multi-channel weir flow type is deliberately designed to be higher than the maximum backwashing expansion height of the filter layer, aiming to prevent these filter media from being washed away with the water flow during backwashing, ensuring that the filter media can stably play their roles in the filtering system and maintain the filtering precision and effect.

 

The water collection device located at the lower part of the filter media is composed of a perforated plate matched with stainless steel filter caps. It undertakes multiple important missions. On the one hand, it can firmly support the filter media and prevent the filter media from being lost under the impact of the water flow or during the operation of the equipment. On the other hand, during the backwashing operation, it can ensure the even distribution of water and air, enabling the backwashing process to thoroughly and fully clean the filter media, remove the impurities adsorbed on the filter media, and allow the filter media to restore good filtering performance and be ready for the next round of filtering work.

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 IV. Summary

The application of high-speed filters in the steel industry has brought many positive impacts. The water filtered by it can be recycled, which perfectly conforms to the current trend of energy conservation, emission reduction, and green development in the steel industry. In today's era when environmental protection requirements are becoming increasingly stringent, steel enterprises are facing the dual challenges of ensuring production benefits while reducing the impact on the environment. The high-speed filter has just become a powerful "assistant" for steel enterprises to achieve a win-win situation in environmental protection and economic benefits.

 

With its unique design and excellent performance, the high-speed filter has not only successfully solved the problem of purifying the cooling water quality in the steel production process but also stood out with the advantages of high efficiency, energy conservation, and environmental protection. It provides solid technical support for steel enterprises on the road of sustainable development, helping them maintain efficient production and operation while meeting environmental protection requirements. With the continuous progress of science and technology, it is believed that high-speed filters in the steel industry will be further optimized and upgraded, continuously improving their own performance, better adapting to the diverse needs of the industry's future development, and continuously contributing to the green prosperity of the steel industry, becoming an important guarantee for the steel industry to move towards high quality and sustainability.