Steel industry

Scheme configurations refractory

Refractories for steel smelting furnace:

Castables and Pre-casting Blocks for EAF Roof
Castables and Preformed Blocks for LF Roof

Refractories for ladle and tundish:

Dry tamping mixture for EAF bottom
Dry Tamping Mix for Intermediate Frequency Furnace

Functional refractories for Con-casting :

A series of refractory concretes for lining steel ladles
Shaped refractories for ladle
Dry vibrating mix for tundish
Series of coatings for tundishes
Castable for Permanent Tundish Lining

Functional refractories for Con-casting :

Slag tile(Dam) and Impact Pad Shroud, Monolithic Stopper and Immersed Entry Nozzle for Workpiece, Plate, Thin slab
Continuous casting)
Zirconium dosing nozzles for Billet continuous casting

Refractories for heating furnace

Refractory concrete for working lining of heating furnaces
Plastic Refractories for Heating Furnace
Lightweight insulating concrete products for heating furnaces
Shotcrete mixture for converter and steel ladle
Prefabricated Chrome Corundum Abrasion Resistant Block for Heating Furnace
Refractory fiber products for heating furnaces (felt, blanket, board and module)

Refractories for converter :

Magnesium Carbon Brick
Tapping Hole Block
General steel output
Gunning Mix For Tapping Hole
Magnesium Shotcrete Mix
Refractory repair for the converter
Filling material for converter steel outlet
Cold joint material for converter
Hot repair material for converter

Magnesia-carbon brick :

Magnesia carbon bricks are made from alkali magnesium oxide with a high melting point (melting point 2800℃) and carbon materials with high melting points, which are difficult to impregnate with slag as raw material, with the addition of various non-oxide additives and in combination with carbon binders, which do not burn carbon composite refractories. Magnesia carbon brick has good heat resistance, high moisture resistance, good resistance to thermal shock and low creep at high temperatures.

Subject	MT-8	MT-12	MT-14
MgO，% ≥	82	78	76
C，% ≥	8	12	14
Apparent porosity，% ≤	6	5	4
Bulk density，g/cm³ ≥	2.98	2.95	2.93
Cold crush strength，MPa ≥	30	35	40
Modules from Razriv(1400*0.5h)，MPa ≥	5	8	12

Magnesia brick :

Magnesia brick contains periclase as the main crystalline phase, which is the main product in alkali refractories. It has high fire resistance and good resistance to iron oxides, alkaline slag and fluxes with high calcium content.

Subject	MZ-92	MZ-95	DMZ-97	DMZ-98
MgO，% ≥	92	95	96.8	97.5
SiO₂，% ≤	3	2.5	1.5	1.0
CaO，% ≥	2.5	2.0	1.2	1.2
Apparent porosity，% ≤	18	18	16	15
Bulk density，g/cm³ ≥	2.92	2.95	3.10	3.15
Cold crush strength，MPa ≥	55	60	70	80
0.2MPa R-U-L ，℃ ≥	1550	1600	1700	1700
thermal shock resistance，1100℃ ≥	10	10	8	8

Sand-lime bricks :

Sand-lime brick is made from quartz stone, SiO2 content exceeds 93%, It has good acid slag resistance and good thermal conductivity. And the fire resistance is 1690~1710°C, RU L exceeds 1620°C.

Subject		RG-95
		Bricks for furnace walls	Checker brick
Chemical composition	SiO₂	≥95
	Al₂O₃	≤1.0
	Fe₂O₃	≤1.2
Apparent porosity %		≤22	≤24
Real density g/cm³		≤2.33	≤2.34
Cold crush strength MPa		≥40	≥30
0.2MPa R-U-L ℃		≥1650
Residual quartz %		≤1.5
Creep rate% 0.2MPa 1500℃ 0h~50h		≤0.8
Thermal Expansion Rate% 1000℃		≤1.28

Unshaped refractory material for the steel industry:

Subject	Index
Subject	Aluminum-magnesium spinel Castable	Corundum spinel Castable	Low cement high alumina Castable	Artesian mullite Castable
MgO，% ≥	13	3.5	–	–
Al₂O₃, % ≥	70	92	70	75
Fe₂O₃, % ≤	–	–	1.2	1.0
Real Density，g/cm³ ≥	2.8	3.1	2.8	2.75
Modules Gap，MPa ≥	6	9.2 1400℃*0.5h	9	10
Cold crush strength, MPa ≥	42	64	65	100
Ramp speed，% 1500℃*3h	±1.0	0~0.5	±0.6	0~-0.5