อุตสาหกรรมเหล็ก

Configuration Diagram of Refractories

Refractories for Steel-making Furnace:

Castables and precast blocks for EAF Poof
Castables and precast blocks for LF roof

Refractories for Ladle & Tundish :

Dry ramming mix for EAF bottom
Dry ramming mix for intermediate Frequency furnace

Functional refractories for con-casting:

Castables series for ladle lining
Shaped refractories for ladle
Dry vibrating mix for tundish
Coatings series for tundish
Castable for the permanent lining of tuna dish

Functional Refractories for Con-Casting :

Slag Tile(Weir) and impact pad
Shroud, Monolithic Stopper, and Submerged entry nozzle for billet, slab, thin slab
Continuous casting)
Zirconia metering nozzles for billet Continuous casting

Refractories for Heating Furnace :

Refractory castables for working lining of the Heating furnace
Plastic refractories for heating furnace
Light-weight insulating castables for Heating furnace
Gunning mix for converter and ladle
Precast chrome corundum abrasion-resistant bock for heating furnace
Refractory fiber products for heating Furnace (felt, blanket, board and module)

Refractories for converter :

Magnesium carbon brick
Tapping hole block
Overall steel outlet
Gunning mix for tapping hole
Magnesium gunning material
Repair refractory for 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 of high melting point alkaline oxide magnesium oxide (melting point 2800℃) and high melting point carbon materials that are difficult to be infiltrated by slag as raw materials, adding various non-oxide additives and combining them with carbon binders Do not burn carbon composite refractories. Magnesia carbon brick has good high temperature resistance, strong slag resistance, good thermal shock resistance and low high-temperature creep.

รายการ	MT-8	MT-12	MT-14
มก，% ≥	82	78	76
C，% ≥	8	12	14
Apparent Porosity，% ≤	6	5	4
Bulk Density，กรัม/ซม³ ≥	2.98	2.95	2.93
Cold Crushing Strength，MPa ≥	30	35	40
Modules of Rupture(1400*0.5h)，MPa ≥	5	8	12

อิฐแมกนีเซีย :

Magnesia bricks have periclase as the main crystal phase, which is the main product in alkaline refractories. It has high refractoriness and good resistance to iron oxides, alkaline slag and high-calcium fluxes.

รายการ	MZ-92	เอ็มแซด-95	DMZ-97	DMZ-98
มก，% ≥	92	95	96.8	97.5
ซีโอ₂，% ≤	3	2.5	1.5	1.0
แคลเซียมโอ，% ≥	2.5	2.0	1.2	1.2
Apparent Porosity，% ≤	18	18	16	15
Bulk Density，กรัม/ซม³ ≥	2.92	2.95	3.10	3.15
Cold Crushing Strength，MPa ≥	55	60	70	80
0.2MPa R-U-L ，℃ ≥	1550	1600	1700	1700
thermal shock resistance ，1100℃ ≥	10	10	8	8

Silica Bricks :

อิฐซิลิกาทำจากวัสดุหินควอตซ์, the content of SiO2 is above 93%,it has good resistance to acid slag and good heat conductivity. And the refractoriness is 1690~1710°C,RUL เกิน 1620°C.

รายการ		RG-95
		Furnace Wall Bricks	Checker Brick
องค์ประกอบทางเคมี	ซีโอ₂	≥95
	อัล₂อ₃	≤1.0
	เฟ₂อ₃	≤1.2
Apparent Porosity %		≤22	≤24
Real Density g/cm³		≤2.33	≤2.34
Cold Crushing Strength MPa		≥40	≥30
0.2MPa R-U-L ℃		≥1650
ควอตซ์ที่เหลือ %		≤1.5
Creep Rate % 0.2MPa 1500℃ 0h~50h		≤0.8
อัตราการขยายตัวเนื่องจากความร้อน % 1000℃		≤1.28

Unshaped Refractory For Steel Industry :

รายการ	ดัชนี
รายการ	Aluminum Magnesium Spinel Castable	Corundum spinel Castable	Low Cement High Alumina Castable	Mullite Artesian Castable
มก，% ≥	13	3.5	–	–
อัล₂อ₃, % ≥	70	92	70	75
เฟ₂อ₃, % ≤	–	–	1.2	1.0
Real Density，กรัม/ซม³ ≥	2.8	3.1	2.8	2.75
Modules of Rupture,MPa ≥	6	9.2 1400℃*0.5h	9	10
Cold Crushing Strength,MPa ≥	42	64	65	100
Linear Change Rate，% 1500℃*3h	±1.0	0~0.5	±0.6	0--0.5