The above-mentioned brands are produced according to national standards and can be supplied in bulk or prefabricated form. It is low in price and easy to construct, and is widely used in various industrial kilns.
We make the above products according to the National Standard at P.R.China,GB3712-83 and supply as unshapedmaterials to be cast at the job site or as precast blocks forLaying.They are very cheap and easy to be constructed.Sothey are widely used in various furnaces and heating equipment.
The preformed block is composed of plastic refractory,ceramic fiber and metal anchor.It can be a good thermal insulator,as long as the anchor is welted on the skid pipe of reheating furnace.
|
Kind Brand |
High alumina |
High alumina |
Fireclay |
|
|
HX-BP-60 |
HX-BF-60 |
HX-BNF-42 |
||
|
(℃) Max.service temperature |
1500 |
1400 |
1350 |
|
|
(T/M³) Amount required |
2.4 |
2.4 |
2.3 |
|
|
(%) Additional water |
7% Phosphoric Acid Bé=32 - 35 |
9-11 |
9-11 |
|
|
(℃) Refractoriness |
≥1730 |
≥1690 |
≥1650 |
|
|
(%) Chemical composition |
Al2O3 |
≥60 |
≥60 |
≥42 |
|
(%) Permanent linear change after firing at
|
1350℃×3hr 1400℃×3hr 1450℃×3hr |
-- -- ±1.0 |
-- ±1.0 -- |
±1.0 -- -- |
|
(MPa) Cold crushing strength after drying at
|
110℃×24hr |
≥15 |
≥20 |
≥20 |
|
(Mpa) Cold modulns of rupture after drying at |
110℃×24hr |
≥3.5 |
≥4.0 |
≥4.0 |
|
Characteristics |
Phosporic acid bond |
Alumina cement bond |
Alumina cement bond |
|
|
Applications |
E.A.F.roof Steel runner Burner |
Reheating furnace roof Steel runner Burner |
Reheating furnace roof &wall |
|
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