About Product

The DFGS insulation castable refractory is our newly developed standard quality product based on corundum, alumina cement and additive. This product combines excellent micro structural flexibility with good coat ability and can therefore successfully be used in the various incinerators, which are used to burn a large amount of living garbage, industry scrap and exhaust gas. Compared to the castable refractory sample from Norway, our product has the characteristics of higher compactness, lower porosity, stronger compressive strength and flexural strength. The excellent performance of this product is on the following:

long usage time

No maintenance

Intermittent operation of rubbish incinerator

High temperature corrosion resistance

The detailed physical-chemical index is on the following:

Item         Brand, index		GD-170	GZ-3	GZ-4	HDG-4
Bulk Density Kg/m3	110oCx24h	2350-2300	3050-3000	2900-2850	1000-950
	1200oCx3h	2300-2250	3000-2950	2850-2800	950-900
Cooling Normal-temp  compression /bending  strength   MPa	110oCx24h	≥30/5	≥50/7	≥90/8	≥5/1.5
	1200oCx3h	≥25/4	≥70/9	≥95/8.5	≥4.5/1.1
Linear change    Ratio  After    Firing   %     1300oCx3h		1-2	≤-0.2	≤-0.2	8153h  -0.2
Alumina contents          %		45-50	≥93	≥92
Silicon oxide contents      %		35-40
Thermal  conductivity      350℃   W/M.K					<0.25