Hot sale refractory aluminum oxide bricks for melting metal crucible

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Product detail:

Hot sale refractory aluminum oxide bricks for melting metal crucible  

 

Introduction

The  refractory aluminum oxide bricks  are used as the main raw material alumina hollow ball, high performance Micropowder for additives, organic material temporary binder high temperature shuttle kiln baked.

 

Characteristized:

1. containing a large number of closed pores

2. have a lightweight high temperature

3. good insulation properties

4. refiring small contraction

5. excellent thermal shock resistance

7. strong resistance to the corrosive gas and slag.

 

Products can greatly improve the thermal efficiency of the kiln to shorten the production cycle, reduce the kiln body weight to achieve energy saving.

 

Application:

The refractory aluminum oxide bricks can be in direct contact with the flame, to apply to the cracking furnace, hot stove, furnace, tunnel kiln, push board kiln, crucible furnace and electric furnace, electric kilns lined widely used in metallurgy, refractories, light industry, chemical industry, ceramics, glass, electronics and other industries. Dimensions of the product, the physical and chemical indicators, service life have reached or exceeded the level of similar products at home and abroad

 

Physical and chemical indexes

 

Brand	Clay insulating bricks				High Alumina insulating bricks
	NG-0.5	NG-0.6	NG-0.8	NG-1.0	LG-0.6	LG-0.8	LG-1.0
Bulk density g/cm3       ≤	0.5	0.6	0.8	1	0.6	0.8	1
Crushing strength Mpa   ≥	1.5	2	2.5	3.4	1.96	2.94	4
The experimental temperature of linear change ≤2%	1250	1300	1350	1350	1350	1400	1450
Thermal conductivity 350±25(W/m.k)                 ≤	0.18	0.25	0.35	0.5	0.25	0.032	0.45
Refractoriness under load	1160	1250	1280	1300	1300	1350	1380
Al2O3 % ≥	35	40	42	42	50	52	52
Fe2O3 % ≥	2.5	2.5	2	2	1.8	1.6	1.5
Maximun erice temperature	1150	1200	1280	1300	1300	1350	1380

 

 

 

 

 

 

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