We offer isostatic pressing products for steel casting units and gas blowing systems. These products include tubes to protect the metal streams from the secondary oxidation, stoppers to control steel flow, submerged nozzles to control the steel leakage from the tundish, tap-holes for converters. We use alumina-graphite raw materials for the majority of items, oxide-zircon-graphite as well as magnesia-graphite materials for heavy-loaded areas. Raw materials for functional products are flaked graphite, fused corundum, burned alumina, magnesia clinker, antioxidants. Synthetic resins are used as binders.

Selected materials for stoppers

Name	Chemical analysis, %					Physical properties
	MgO	Al2O3	SiO2	Fe2O3	LOI	Density g/cm³	Porosity %	Compression strength Mpa
Body		49-54	10-15	0-2	29-34	2.32-2.50	10-16	7-13
Body		55-59			28-32	2,40-2,55	11-17	7-13
Body		60-64			20-24	2,58-2,72	9-14	9-16
Slag belt	16-20	58-62			12-16	2,64-2,80	10-16	6-12
Slag belt		78-84	1		10-15	2,72-2,90	13-18	5,5-11
Slag belt	65-70				12-17	2,5-2,7	13-19	5-11

 

Selected materials for tundish nozzles

Designation	Chemical analysis %		Physical properties
	Al2O3	LOI	Density g/cm3	Porosity %	Compression strengh MPa
Body	60-64	20-24	2,58-2,72	9-14	9-16
Body	49-53	23-27	2,45-2,60	12-18	5-10
Slag belt	68-72	16-20	2,60-2,75	12-18	7-14
Slag belt	70-75		2,60-2,75	12-18	7-15

 

Selected materials for protective tubes

Designation	Chemical analysis, %							Physical properties
	Al2O3	SiO2	ZrO2	Fe2O3	TiO2	LOI	Density g/cm³	Porosity %	Flexural strength Mpa
Body	59-63	10-15		0-3	0,5-2	21-25	2,52-2,70	11-18	5-10
Body	49-53	18-25		0-2		23-27	2,45-2,60	12-18	5-10
Body	35-39	18-23		1-3		33-39	2,19-2,25	14-17	4-8
Slag belt	61-65					19-23	2,60-2,76	10-18	5-10
Slag belt			68-72			17-21	3,40-3,52	11-17	5-10

 

Selected materials for submerged nozzles

Designation	Chemical analysis %							Physical properties
	Al2O3	SiO2	ZrO2	Fe2O3	TiO2	LOI	Density g/cm³	Porosity %	Flexural strength Mpa
Body	49-54	10-15			0-2	29-34	2,32-2,50	10-16	7-13
Body	49-53	12-18		0-2		26-30	2,32-2,48	11-17	7-14
Body	60-64	6,83	2			20-26	2,58-2,72	9-14	9-16
Body	70-74	3				19-23	2,56-2,70	10-17	6-12
Slag belt		0-2	73-79		0-1	10-14	3,72-3,92	12-18	7-13
Slag belt			80-84			8-12	3,80-3,96	12-18	7-13