Keramicalia

Tel: +27 (0)11 412 3261 or +27 074 587 2728 Fax: +27 (0)11 692 1232
We manufacture specialised refractories and ceramics.

Textiles

There is a bewildering array of textiles out there. Keramicalia has tested a vast range of them, and reduced the range to those that work really well in mouldings. We do not manufacture any of them, but stock all the best ones.

Fibreglass Scrim: Ours is alkali resistant, those which are not can yield terrible disasters with cementitious binders. Plain weaves unravel too easily, our twill is more stable. The hole size of 10mm is optimal for most ceramic and cementitious applications.

Fibreglass Mat: Normal mats have limited flexibility. Our stitched mat can do complex curves. (Curved along 2 axes).

Polypropylene scrim: for alkaline binders.

Alumina fibre: Amazing stuff, see Keraline
Woven Ceramic Fibre: keratex is a composite with stainless steel wire incorporated.

Aerogel fibre:Super insulation in flexible sheets.

Non-woven Text

Ceramic Fibre Blanket needs no introduction.

Skin Safeis an amazing new mineral wool, in blanket attached to diamond mesh, or boards.

IT DOES NOT ITCH!

Ceramic Fibre Paper: we stock 1mm and 3mm.

We also stock carriers for Keraforce, from 17g/m2 to 150g/m2

Miscellaneous:

SFK: “one side corrugated” cardboard used in pipe and cylindrical furnace manufacture.

Stiff plastic sheet: used over casting formers for very smooth surfaces.

Carbon fibre: sometimes in stock.

Carbon felt

Graphite paper

Expanded Metal: for anchoring abrasion resistant material to steel sheet.

Hexmetal: for anchoring abrasion resistant materials to steel sheet.

 

Prices 2017

Fiberglass Scrim R56/m2
Fiberglass Stitched Matt R34/m2
Polypropylene Fibres

R45/m2

Keraline R20 160/m2
Keratex R449/m2
Aerogel fibre S.Q
Ceramic fibre blanket 96/25 R207/m2
Ceramic Fibre paper 3mm R604/m2
Ceramic fibre paper 1mm R592/m2
Skin safe boards 25mm R244/m2
Skin safe wired mattress rolls R2 298
Keraforce carrier 150g/m2 R20/m2
17g/m2 R4/m2
SKF R25/m2
Stiff plastic sheet R19/m2
   

Skin Safe

We are now importing a French rockwool product that DOES NOT ITCH!! It is made by a new process in which no shot is produced.
You can rub it on your face!
We will be stocking soft boards 1,2m x 600mm x 25mm @ R244 ea
and rolls of wired mattress 5m x 1,2m x 50mm, ready to wrap around tanks etc. @ R2 298/roll

 

 

 

 

 

Keratex

Keratex is a woven aluminosilicate cloth, reinforced with fine nickel-chrome wires. Conventional refractory fibre blankets are either asbestos based or have organic material woven in. Keratex is completely asbestos free. Keratex contains less than 2% organic matter. It is very strong, flexible and light. Keratex can withstand 980°C. It is normally used as a screen for radiant heat from temperature sources much higher than 980°C, but the textile itself seldom reaches its temperature limit.

Keratex remains flexible at high temperature. It only breaks down slowly by abrasion. It does not shrink. It has very good chemical resistance. It is only attacked by hydrofluoric acid, phosphoric acid and strong alkalies. It is not affected by water and steam. Screens are not impervious, but stop most of the air flow through them.

Applications: Curtains to limit convection air flow at furnace doors. Curtains to separate different heat zones of furnaces or ovens. Screens to shield operators from radiant heat. Temporary screens for operators during gunning and hot repair. Protection of hot floors during gunning or other repair. Entrance and exit barriers in continuous heat treatment processes.

 Width: 980mm.   Roll length: 42m.

Strips can be stitched with thin element wire.

Ceramic Fibre Blanket

ALUMINO SILICATE SPUN FIBRE NEEDLED BLANKET

DESCRIPTION AND APPLICATION:
Flexible needled ceramic fibre blanket made of long and large-diameter spun fibre. Good thermal stability and thermal shock resistance, good chemical stability and tensile strength, low heat storage and thermal conductivity.

CHEMICAL ANALYSIS (%)
AI2O3                                   46.10
AI2O3 + SiO2                97.10
Fe2O3                           1.0
Na2O3 + K2O                 0.5
CaO+MnO2 + TiO2
+ Trace elements          1.5

PHYSICAL PROPERTIES:
Classification temperature             1260°C 
Colour                                         White

Fibre diameter                              3-4.5um

Fibre length                                 150-250mm

Bulk density                                96kg/m3

Permanent linear shrinkage (1000°C X24hr)         -3%

Thermal conductivity (mean value)   at 200°C              0.06W/m.k

                                                             at 400°C               0.11W/m.k

                                                             at 600°C                0.20W/m.k

                                                             at 800°C               0.18W/m.k

                                                             at 1000°C             0.24W/m.k

Tensile strength                                0.048Mpa

Shot content      (0>0.25)                  11.0%

PACKAGING                       in cartons with plastic liner

STORAGE                             in dry and weather proof stores

HEALTH & SAFETY           refer to MSDS.

Keraline

A woven alumina fibre fabric which remains FLEXIBLE at and after high temperature FIRING! We have no idea how this is possible, we import it and it works!
The main application is to cover ceramic fibre blanket and board to prevent CONTAMINATION of wares from loose fibre particles. It is widely tested and proven in the ceramic industry, mainly to protect glazes.
It requires specialized anchoring systems, which we also supply.
The material is pink when fresh and turns white after firing. The pink is the sizing which allows the threads to be woven.
The price is in the region of R20 160/m2