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SIC ceramic filter membrane – Pure SIC filter membrane

Water treatment membranes produced from silicon carbide materials have the characteristics of ultra-high hardness, high temperature resistance, acid and alkali corrosion resistance, high throughput, and high hydrophilicity. Its flux can reach 100 times that of traditional organic membrane materials and 3-5 times that of ordinary ceramic membranes.

The silicon carbide membrane is fired using a process with a sintering temperature of 2300 ℃. During the sintering process, the sintering neck between the silicon carbide aggregates undergoes a phase transition from solid to gas to solid, with an opening rate of over 45%. The formed filter channel has strong connectivity, coupled with the inherent hydrophilicity of the silicon carbide material (contact angle only 0.3 °), resulting in a pure water flux of up to 3000LMH, which is hydrophilic and oleophobic.

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.

    Product Details

    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 raw materials of the support layer, transition layer and separation layer of the silicon carbide film are all made of high-purity green silicon carbide (>99.5%) with the highest purity and best quality on the market, without adding any sintering aids. Therefore, it has 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:


    Product Technical Parameters

    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