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SIC ceramic filter membrane – Pure SIC filter membrane
Water treatment membranes made of silicon carbide possess characteristics such as high hardness, high temperature resistance, acid and alkali corrosion resistance, high flux, and high hydrophilicity. Their flux can reach 100 times that of traditional organic membrane materials and 3-5 times that of ordinary ceramic membranes.
Silicon carbide membranes are manufactured using a 2300℃ sintering process. During sintering, the sintering necks between silicon carbide clusters undergo a solid-gas-solid phase transition, resulting in an opening ratio exceeding 45%. The formed filtration channels have strong connectivity, and combined with the excellent hydrophilicity of silicon carbide itself (contact angle of only 0.3°), this allows for a pure water flux of up to 3000 L/h, while also exhibiting hydrophilic and oleophobic properties.
The isoelectric point of the silicon carbide film is around pH 3, and the surface of the film can maintain negative charge over a wide pH range, improving its pollution resistance.
Excellent chemical stability, capable of working in extreme environments (pH range of 0-14); Rich cleaning plans can be developed based on the characteristics of pollution factors; Oxidants are fully tolerant, including ozone and hydroxyl radicals.
The unique technology of the company's product is the integrated silicon carbide film, which refers to the silicon carbide ceramic film sintered together with the silicon carbide support body and film layer. Its advantages lie in:
The membrane layer is not easily detached, greatly improving the lifespan of the membrane body on top of the foundation;
More suitable for backwashing process, making membrane pores less prone to clogging, with a service life of up to fifteen years.
Silicon carbide ceramic powder has stable chemical properties (acid and alkali resistance, corrosion resistance, oxidation resistance), and it is hardly etched with any solvent at 1500°C.It has high thermal conductivity, low thermal expansion coefficient, strong hydrophilicity and good wear resistance, high hardness, Mohs hardness of 9.5, second only to the world's hardest diamond (10).
The support layer, transition layer, and separation layer of the silicon carbide film are all made from high-purity (>99.5%) green silicon carbide powder available on the market, without adding any sintering aids. Therefore, it possesses almost all the characteristics of silicon carbide materials.
SIC membranes can perform solid-liquid separation and oil-water separation through cross flow filtration in extreme environments (acid, alkali, high temperature, high concentration purification), SIC membrane oil-water separation:
| Index | Value | ||
| Material | Silicon Carbide | ||
| External diameter | 40mm | 30mm | 51.5mm |
| Length | 1200mm | 1200mm | 1200mm |
| Channel diameter | 4mm | 4mm | 3mm |
| Filter area | 0.56m2 | 0.29m2 | 1.44m2 |
| Number of channels | 37 | 19 | 121 |
| weight | 1.9kg | 1.1kg | 3.9kg |
| Product composition | sic＞99% | sic＞99% | sic＞99% |
| Porosity | ＞45% | ＞45% | ＞45% |
| Membrane pore size | 40nm/100nm/2um | 40nm/100nm/2um | 40nm/100nm/2um |
| Pure water flux temperature 20 degrees, 1 bar | 2500-3000LMH | 2500-3000LMH | 2500-3000LMH |
| PH range | 0-14 | 0-14 | 0-14 |
| Adapt to temperature | 1℃-800℃(Gas) | 1℃-800℃(Gas) | 1℃-800℃(Gas) |
| Transmembrane pressure | Up to 1bar | Up to 1bar | Up to 1bar |
| Operating pressure | 1-5bar | 1-5bar | 1-5bar |
End Face
Product Advantage
High water flow rate
High mechanical strength
Wear resistance
Strong hydrophilicity
Oil resistant
Low operating pressure
High temperature resistance
Low coefficient of thermal expansion
Company Introduction
Shandong Huayi Tech New Materials Co., Ltd. is located in China and was established in 2018. The company is committed to the development and application of materials such as silicon carbide and boron carbide in multiple industries.
The company's main products are silicon carbide powder and ceramics, boron carbide powder and ceramics, silicon carbide ceramic films, nuclear power boron carbide materials, etc. These products are widely used in the nuclear power industry, military industry, environmental protection, new energy, chemical industry and other fields.
Product Application
Oil-water separation
Machined waste treatment
Chemical catalyst reactor
Acid&alkali liquid recovery
Seawater desalination pretreatment
Tap water pretreatment
Circulation of mining water
Food & drinks purification
