Corundum Ramming Mass castable refractory for alloy cast iron steel High Alumina

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Refractoriness (Degree):: Common (1580°< Refractoriness<1770°) SiO2(%)≥: 0.7
Bulk Density G/cm 3≥: 2 Cold Crushing Strength MPa 1110℃x3h≥: 15
Fe2O3(%),≤: 0.5 Apparent Porosity(%): 26
Linear Changing After Burnt(%): 0-1.6 Al2o3(%),≤: 95
Max.grain Size Of Aggregate(mm): 5 Amount For Construction: 2300

Corundum Ramming Mass

Features

1. High volume stability.

2. High compactness.

3. Strong resistance to erosion.

 

Description

This product uses high-quality high-alumina, corundum and spinel, fused and high purity magnesite as the main raw materials, add a variety of different binding agents and special properties of the fine powder materials, such as by the fine ratio and mixing made.

Specification

Aluminum-magnesia ramming material, high-alumina (or corundum) – silicon carbide – carbon ramming material, alkali refractory ramming material and zirconium mullite ramming material.

Applications

Applicable to all kinds of carbon steel, low manganese steel, alloy steel, alloy cast iron, high-speed tool steel and stainless steel.

Physical and chemical index

Items HDD-1 HDD-2 HDD-3 HDD-4 HDD-5
Chemical composition(%) AI203≤ 95 96 96 97 90
Si02≥ 0.7 0.6 0.6 0.5 0.4
Fe203≤ 0.5 0.5 0.4 0.4 0.8
Cold Crushing Strength (Mpa) 1300℃x3h After firing at 15 15 10 10 25
Apparent porosity(%) 1300℃x3h After firing at 26 26 25 25 23
Linear changing after burnt(%) 1300℃x3h After firing at 0 –1.6 0-1.2 0 –1.0
Bulk density (g/cm3) 1300℃x3h After firing at 2 2 2.1 2.1 2.2
(℃)Refractoriness 1780 1780 1780 1780
Max. grain size of aggregate(mm) 5 4.5 4.5 4.2 4.2
Amount for construction 2300 2300 2300 2400 2400
Mathod of construction Jolt or ramming

 

Note: General cargo is bulk mixture, all products must do waterproof measures during the transportation and storage, it is prohibited to use if the goods appear agglomeration.

 

 

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