Coal-charging Hole & Bell Pre-cast Refractory

Coal-charging Hole & Bell Pre-cast Refractory

Coal-charging Hole & Bell Pre-cast Refractory


New type coal-charging hole precast has high strength, low thermal conductivity, and good abrasion and erosion resistance. Reduce physical damage and tar and other chemical erosion for the refractory during operation. The working life is up to three years.

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WhatsApp/Phone Number: +8613592411271

Product detail

Coal-charging Hole & Bell Pre-cast Refractory

Main Composition: Al2O3

Application: Coke oven, etc

Capacity: 500 tons per month

Color: White

Size: As your requirements

Package: Export wooden pallets

Product Introduction

New type coal-charging hole precast has high strength, low thermal conductivity, and good abrasion and erosion resistance. Reduce physical damage and tar and other chemical erosion for the refractory during operation. The working life is up to three years.

Features

1. Long working life.

2. Self-cleaning function.

3. Keep the working area clean.

4. More match with the lid, reduce gas leakage, yellow smoke and pollution.

5.Can improve the oven roof working condition.

Application

It’s mainly used for coke oven.

Product Parameters

ITEM GLAZED
ω(Al2O3) /%   ≥ 45
ω(MgO) / %   ≥ 2.5
Apparent Porosity / %   ≤ 28
Bulk Density /g/cm3    2.1
Cold Crushing Strength / MPa   ≥ 40
Rupture Strength  / MPa   ≥ 4
Thermal Conductivity/W/(m·K)1000℃ (Heating side)   ≤ 1.2
Thermal Shock Resistance (1100℃, water cooling) /cycle   ≥ 50

 

ITEM NORMAL
ω(Al2O3) /%   ≥ 45
ω(MgO) / %   ≥ 2.5
Apparent Porosity /%   ≤ 28
Bulk Density / g/cm3    2.1
Cold Crushing Strength /MPa   ≥ 110℃*24h After drying 35
1350℃*3h After firing 40
Rupture Strength /MPa   ≥ 110℃*24h After drying 3
1350℃*3h After firing 4
Thermal Conductivity/W/(m·K)1000℃ (Heating side)   ≤ 1.2
Thermal Shock Resistance (1100℃, water cooling) / cycle   ≥ 50

 

Comparison between new type and traditional type

NEW TYPE TRADITIONALTYPE
High performance crystalline ceramic refractory materials cover the working surface. Iron casting
Good thermal insulation Poor thermal insulation
No coal and coke deposition, self-clean function Easy to be magnetized, leading to accumulate dust.
The maintenance frequency can be significantly reduced. Keep the working area clean. Frequent repair and high maintenance cost.
Match with the lid; reduce gas leakage, yellow smoke and pollution, improving the oven roof working condition. Gas leakage

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