cement industry has entered a critical stage of overall acceleration, and has formally become the core standard of compliance production and green transformation of enterprises in the industry. The national policy continues to increase and the assessment rhythm continues to tighten, which delineates a clear timeline and hard indicators for the green upgrading of the industry.
On June 21, the State Council issued the "Fifteenth Five-Year Plan for the Construction of Beautiful China" (Guofa [2026] 20), which clearly calls for further promotion of ultra-low emission transformation in key industries such as cement and coking, which is the first time that the national five-year plan directly names the upgrading of ultra-low emissions in the cement industry. It demonstrates the firm determination of the state to promote the green and low-carbon transformation of the cement industry. Prior to
this, the special policy of the industry has clearly defined the transformation objectives: by the end of 2028, 80% of the cement clinker production capacity in key areas should be strived to complete the ultra-low emission transformation; At the beginning of 2026, the Ministry of Ecology and Environment further issued an annual hard task, making it clear that 100 million tons of cement clinker production capacity will be transformed into ultra-low emissions throughout the year, and the countdown to industry transformation will be fully opened.
Under the background of policy inversion and accelerated iteration of the industry, green dust removal equipment has become the core key for cement enterprises to achieve ultra-low emissions. Wu Kai, general manager of
Zhejiang Haokai Filter Industry Co., Ltd. (Hereinafter referred to as "Zhejiang Haokai"), said that keeping up with the national green development strategy, cultivating the field of environmental protection filter materials, and enabling cement enterprises to transform compliance, reduce costs and increase efficiency with high-quality products and professional services are not only the core initiative of enterprises based on the industry, but also the core responsibility to help build a beautiful China.
Facing the opportunities and challenges of ultra-low emission transformation in the cement industry, Zhejiang Haokai has precisely laid out a dual-main line development strategy: deeply cultivating the traditional basic plate of glass fiber filter materials, iteratively upgrading core products, and developing a new track of metal filter bags to create the second growth curve. Relying on the synergistic advantages of dual product lines, enterprises can cover the full scene needs of cement industry from conventional dust removal to high temperature limit conditions, customize high cost-effective, integrated ultra-low emission filtration solutions for cement enterprises, and help enterprises efficiently complete the transformation task and operate steadily up to the standard. As the core industry of Haokai, Zhejiang Province, the basic plate
of deep-ploughing glass fiber filter material has been upgraded iteratively to build up the leading advantage
of subdivision. After years of R & D and production accumulation, the glass fiber filter material has formed a mature technology system, product matrix and delivery capability, which is the core basic plate for enterprises to stabilize the market and service industry. It is also the mainstream preferred product for cement enterprises to achieve ultra-low dust emission.
At present, the core product matrix of the enterprise is complete, covering 450g-750g series of graphite glass fiber bulked membrane filter material, PTFE membrane glass fiber filter material, graphite modified glass fiber filter bag and other key products, which can accurately adapt to the mainstream high temperature dust removal conditions such as cement kiln tail, waste incineration co-disposal, etc.
With the support of more than 40 core patented technologies, the enterprise has achieved continuous iteration and upgrading of its products. At the same time, it has established a three-level standardized testing system to control the quality of the whole process from raw material screening, production and processing to finished products leaving the factory, to ensure the stability and consistency of batch delivery, and to protect the long-term operation of cement enterprises.
In the strategic layout of enterprises, glass fiber filter material is still the foundation of the industry. In the future, Zhejiang Haokai will continue to cultivate from the three dimensions of process upgrading, new product research and development, and working condition customization to consolidate its leading position in the market segments in an all-round way. At the level of
process optimization, aiming at the requirement of continuous tightening of dust emission concentration under the new ultra-low emission standard, the existing product temperature resistance, anti-condensation and anti-corrosion coating process are iteratively upgraded to fully adapt to the stringent environmental protection standards; At the level of research and development of new products, we should focus on promoting the research and development of new products of high silica glass fiber composite filter materials and nano-coated glass fibers, actively declare the first batch of qualifications of new materials, build differentiated technical barriers, and widen the gap with ordinary competitors in the industry; At the customization service level, we should break the "one-size-fits-all" limitation of traditional standardized products, improve the full-specification customization system, customize the exclusive filter material formula for different cement kiln working conditions and different incineration disposal scenarios, and accurately match the dust removal needs of different working conditions.
At the same time, on the basis of stabilizing the domestic market, enterprises actively expand overseas projects of "the Belt and Road", continuously expand the export share of glass fiber filter materials, and consolidate the basic advantages of glass fiber coated filter materials in an all-round way.
With the popularization of ultra-low emissions in the cement industry, SCR denitrification has become a necessary process for the treatment of nitrogen oxides in enterprises. The high temperature and low dust SCR denitration path puts forward extreme requirements for the front-end dust removal link: it is necessary to ensure stable operation at 280 ℃, efficiently intercept fine dust, provide a clean flue gas environment for the denitration reactor, and avoid catalyst blockage and loss, which also highlights the application shortcomings of traditional filter materials. Due to the high temperature, complex composition and strong acid and alkali corrosion of the flue gas at the
cement kiln tail, the traditional glass fiber filter material can meet the dust removal requirements under conventional working conditions, but under the complex working conditions of ultra-high temperature, strong corrosion and co-disposal, the upper limit of temperature resistance and corrosion resistance are difficult to meet the stringent requirements. In view of this industry pain point, Zhejiang Haokai focuses on the layout of the new track of metal filter bags, accurately filling the short board of dust removal under extreme conditions, and opening up a new growth space.
The enterprise mainly promotes stainless steel sintered metal filter bags and high temperature resistant alloy metal filter materials, selects 316 L, Fe-Cr-Al and other high-quality alloy raw materials, which can operate stably for a long time in the ultra-high temperature environment of 250 ℃ -600 ℃, has excellent chlorine and fluorine ion corrosion resistance, and can cope with the complex corrosion conditions caused by the co-disposal of cement solid waste.
The product adopts gradient fiber layer structure with high porosity and low filtration resistance, which can stably realize the ultra-low emission standard of dust emission concentration ≤ 5mg/Nm ³, effectively reduce the energy consumption of fan operation, improve the operation efficiency of the whole denitrification system, and provide a clean operation environment without dust interference for denitrification catalyst. It perfectly meets the core dust removal requirements of high temperature and low dust SCR system.
More than cement industry, Zhejiang Haokai metal filter bag business focuses on metallurgy, hydrogen energy, fine chemicals, carbon capture and other high value-added emerging areas, with higher standards of filtration products to meet the needs of high-end harsh working conditions, continue to broaden the track boundaries, and create the second growth curve of enterprises.
Dual main line collaborative empowerment, one-stop solution to help enterprises efficiently meet the standards
of glass fiber filter material and metal filter bag is not independent operation, but the formation of "dual-track homologous, collaborative empowerment" core development model. The two product lines share R & D laboratories, production supply chains and sales service systems to achieve technology complementarity, customer resource reuse and closed-loop service, thus completely saying goodbye to the limitations of a single product service.
For cement enterprises in the countdown of ultra-low emission transformation, this model has a strong landing value. Zhejiang Haokai can rely on the same service system to provide enterprises with full scene coverage from conventional dust removal to high temperature extreme working conditions, covering filter material selection, on-site working condition survey, customized scheme output, product delivery, after-sales replacement and maintenance of the whole chain of closed-loop services. Compared with a single category supplier, the one-stop solution can greatly reduce the cost of enterprise selection, docking, operation and maintenance, and speed up the process of transformation and landing.
From the national top-level planning, to the specific objectives of the industry's special policies, to the annual hard task compaction rhythm, the ultra-low emission transformation of the cement industry has entered a critical stage of full-speed attack and time-limited landing.
Zhejiang Haokai's dual main line strategy of "glass fiber stable basic plate, metal expansion growth plate" precisely meets the industry policy trend and the needs of upgrading working conditions, and provides solid equipment and technical support for the green transformation and stable ultra-low standard operation of cement enterprises with the core advantages of dual technology, full scene and one-stop.
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