GKN Sinter Metals - Sintered Metal Filters

GKN Sinter Metals is the leading supplier of metal powder components world-wide. Our global production and sales network employs more than 6,000 staff in 35 companies on five continents. We are involved in structural parts for automotive application a well as in the chemical industry. Here we are focused on catalyst recovery, slurry oil filtration, gas and liquid filtration, powder handling and sparging application.

METAL POWDER COMPONENTS

We offer our customers a wide range of metallurgical powder products, technologies and services - extending from engineering and design consultation, to product testing and the manufacture of even the most complex of components. GKN manufactures and sells:

• Filter technology and components of specified porosity according customers request
• Self-lubricating bearings
• Sintered mouldings
• Powder metal injection mouldings
• Soft magnetic material
• Powder forged components
• High-performance plastics

LIQUID, GAS AND HOTGAS FILTRATION

Ideal for deployment in a wide range of filtration / separation applications, sintered metal filters often prove superior to other filter media, and help reduce production costs. Using porous sintered metal material offers the following advantages:

• Structural stability, with components which remain self-supporting, even when subjected to high pressure differentials and fluctuating stress loading
• Excellent properties under permanent, impact, or oscillatory stress loading, or with rapid pressure increase (impulse or explosive)
• High thermal stability and resistance to thermal shock
• High perfusablity with a small pressure drop
• Designated separation behaviour defined by precisely specified pore size (filter grades 0.5µm-200µm for metallic powders and 3µm-150µm for sintered metal fibre felt)
• Chemical resistance to acids and alkalis for a wide range of pH
• Excellent reverse flushing properties, and options for cleaning with super-saturated steam, chemical solvents, thermal and ultra-sound techniques

METAL FILTERS AND COMPONENTS

GKN Sinter Metals manufacture filters and filter components for a diverse range of applications. The use of porous metal structures reveals a totally new dimension for improving efficiency and rationalization in a wide range of applications. Metal filters offer the following advantages:

• High temperature resistance
• Structural flexibility
• Long working life
• Corrosion resistance
• Mechanically loadable
• Reverse flushable
• Use potential as deep filters
• Use potential as surface filters (metallic membranes)

METALLIC MEMBRANE FOR CATALYST RECOVERY

SIKA AS denotes asymmetrically constructed metallic membranes, whereby, using a patented process, a thin filter-active layer is added to a robust support structure (usually a conventional produced IS or AX product).

As a result of years of development, the product offers users a sintered membrane that combines high permeability and very low pressure drop, yet retaining all the advantages of sintered metal filters. Main application for this product is catalyst recovery.

CORRISION RESISTANT SPARGERS

A uniform flow through whole construction with uniform small bubbles for effective gas transfer guarantees a long residence time of bubbles in liquid.

Due to the small size of the bubbles a high contact area gas / liquid is given which reduces the dissolving time for gas in liquid. GKN offers a 100% seamless construction for standard spargers that eliminate the risk of corrosion along welding seams. Also circular bended constructions are possible.

GAS AND BULK POWDER DISCHARGE

SIKA special materials can also solve problems of handling bulk powders or chemicals. They ease the discharge of bulk powders from storage containers. Needing only the minimum of gas or air, pumped into what is usually the conical part of the container, stored bulk chemicals and powders and so on, can be easily discharged, significantly reducing the common problems of wall friction and particle agglomeration. Furthermore, the gas itself is carried out along with the discharged bulk material. SIKA materials are used in industries handling bulk goods for:

• The aeration and conditioning of bulk chemicals, powders and so forth
• The manufacture of fluidization funnels and plates for pressure conveyers
• Homogenising bulk materials
• Powder layering (fluidized beds)
• Flow bed conveyance
• The de-gassing of bulk materials
• Gassing liquids