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Aluminum oxide magnesia carbon brick, magnesia aluminum oxide carbon brick.

Aluminum oxide magnesia carbon brick, magnesia aluminum oxide carbon brick.

Detailed description:

Aluminum oxide-magnesia-carbon bricks of the PN series use premium quality bauxite as aggregate and focus on strengthening the matrix. With phenolic resin as a binder, they are pressed by machine. They have the characteristics of corrosion resistance, peeling resistance, and high strength.

Magnesite-aluminum oxide-carbon bricks of the PN series adjust the process and technology based on magnesium-carbon bricks, which increases the corrosion resistance and peeling resistance of the material. It is suitable for the bottom and wall of the ladle.

ITEM		MgO-AL₂O₃-C Brick			AL₂O₃-MgO-C Brick
		PN-MAC-12A	PN-MAC-10A	PN-MAC-8A	PN-AMC-65	PN-AMC-70
Chemical Composition	MgO (%); ≥	65	60	55	5	5
	AL₂O₃ (%); ≥	10	12	15	65	68
	C (%); ≥	11.5	9.5	7.5	6	6
Apparent Porosity (%); ≤		6.0	6.0	6.0	8.0	8.0
Bulk Density(g/cm³); ≥		2.92	2.92	2.92	2.93	2.95
Cold Crushing Strenth (MPa); ≥		35	35	35	40	40

Gunning Mixes for EAF

Gunning Mixes for EAF

Product Description:

PN-DL series of gunning mixes for EAF are designed according to the engineering characteristics of the spraying materials and combined with the features of the EAF process. Gunning mixes for EAF are made of high-purity magnesia-based materials, unique binding systems, and external reactants. They feature high adhesive strength, low rebound rate, good sintering ability, and good erosion/corrosion resistance. They are well developed to suit both cold and hot repairs.

Packing: 1000kg/bag, 500kg/bag, or 50kg/bag as required.

Storage & Handling: The filling material must be well protected against dampness or moisture. Do not use if agglomeration appears.

Shelf Life: 6 Months.

Main Properties

BRAND		PN-DLH	PN-DLM
Chemical Composition(%); ≥	MgO	80	65
Chemical Composition(%); ≥	CaO	2	7
Bulk Density(g/cm³); ≥	110℃ x 24h	2.3	2.3
Bulk Density(g/cm³); ≥	1500℃ x 3h	2.5	2.5
Cold Crushing Strenth (MPa); ≥	110℃ x 24h	8	8
Cold Crushing Strenth (MPa); ≥	1500℃ x 3h	40	40
Modulus of Rupture (MPa); ≥	110℃ x 24h	3	3
Modulus of Rupture (MPa); ≥	1500℃ x 3h	10	10
Water Addition (%)		9~11	9~11
Max. Service Temperature (℃)		1750	1700

EAF Tap Hole Filling Mass

EAF Tap Hole Filling Mass

Product description:

Tap hole filler compound is used in the EAF tap hole to prevent molten steel from flowing into the tap hole prior to tapping. A sintered layer is formed on the exposed surface of the filler mass thick enough to prevent penetration of the molten steel, at the same time thin enough to allow it to break out under the pressure of the molten steel when the tap hole is open and the filler mass below the sintered layer can freely flow out.

The PN series of tap hole filling compounds have easy installation, safe application, non-floating, high self-opening rate, and non-pollution characteristics.

Storage and handling: The filling material must be well protected from humidity or moisture.

Shelf life: 6 months.

Chemical and Physical Properties

BRAND		PN-EAF1	PN-EAF2	PN-EAF3	PN-EAF5	PN-EAF6	PN-EAF8
Chemical Composition (%); ≥	SiO₂	28	26	90	75	15	28
	MgO	52	56	-	10	65	57
	C	-	5	-	3	5	-
Grain Size (mm); ≥		6	6	6	6	6	6

Hot Repair Mixes for EAF Tap Hole and Bottom

Product Description:

Joints and cracks around the tap hole areas are inevitable while changing the EBT bricks. In order to patch such joints and cracks under high temperatures, PRCO developed PN-DRX series of hot repair mixes to fix this. These mixes are made from magnesia-based materials with ferrous and calcium elements. They show the features of high strength at both low and high temperatures and excellent erosion/corrosion resistance. They are ideal choices for the hot repairs of the EAF tap hole and bottom.

Storage & Handling: The filling material must be well protected against dampness or moisture. It is normal if a few agglomerations appear.

Shelf Life: 6 Months.

Main Properties

BRAND		PN-DRX-F	PN-DRX-D
Chemical Composition(%); ≥	MgO	80	65
	C	2	8
	CaO	3	-
Bulk Density(g/cm3); ≥	200℃ x 16h	2.4	2.2
Bulk Density(g/cm3); ≥	1500℃ x 3h	2.5	2.2
Modulus of Rupture(MPa); ≥	200℃ x 16h	2	2
Modulus of Rupture(MPa); ≥	1500℃ x 3h	5	5
Cold Crushing Strenth(MPa); ≥	200℃ x 16h	5	10
Cold Crushing Strenth(MPa); ≥	1500℃ x 3h	25	10
Repairing Way		Ramming/Throwing	Throwing
Installation Temperature (℃)		-	> 800 (℃)
Max. Service Temperature (℃)		1750	1750

Ramming Mixes for EAF Bottom

Ramming Mixes for EAF Bottom

Product Description:

PN-DV series of dry ramming mixes for EAF bottom are made from high-quality synthetic materials, additives, and binding agents. Grain sizes and material chemistry are carefully controlled to allow for proper density and sintering. The mixes are available in dust-free versions. These dry ramming mixes feature easy installation, high bulk density, easy sintering, and excellent resistance against molten-steel penetration and superior erosion/corrosion resistance. The products are ideal choices for HP/UHP EAF.

Storage & Handling: The filling material must be well protected against dampness or moisture.Do not use if agglomeration appears.

Shelf Life: 6 Months.

Main Properties

BRAND		PN-DV80-C	PN-DV80-T	PN-DV90-A
Chemical Composition(%); ≥	MgO	80	80	80
	CaO	3	5	1
	Fe₂O₃	3	2	0.5
Cold Crushing Strength(MPa); ≥	1600℃ x 3h	30	30	30
Grain size (mm)		0~8	0~5	0~5
Max. Service Temperature(℃)		1750	1750	1750

MgC Brick for EAF

Product Description:

PN series of MgC bricks for EAF are designed according to different operating conditions and application areas of the EAF lining.

The bricks are made of pure flake graphite and large fused crystal magnesia which has high purity and density. Added with a special antioxidant and takes resins as binders and is finally shaped under high pressure.
PN series of MgC bricks are mainly used in the working lining of the EAF. It contacts with the molten steel and the slag directly. It features high strength, superior thermal shock resistance, and slag corrosion resistance, etc. Based on different smelting conditions and application areas, PRCO provides various brands to choose from.

Transport and storage: Keep in a dry place and handle with care.

BRAND		PN-MT12B	PN-MT14A	PN-MT14B	PN-MT16A	PN-MT18A
Chemical Composition (%); ≥	MgO	78	74	72	74	72
Chemical Composition (%); ≥	C	12	14	14	16	18
Apparent Porosity (%); ≤		5.0	3.0	4.0	3.0	3.0
Bulk Density (g/cm³); ≥		2.97	2.95	2.94	2.92	2.90
Cold Crushing Strenth (MPa); ≥		35	35	32	30	30
Hot Modulus of Rupture (1400℃ x 0.5h); ≥		6	8	8	8	8

Twin Purging Plug System

Product Description:

PN-TW series of purging plug systems have been innovatively developed by PRCO based on its mature casting technology. This system has a unique structure in which two purging plugs are cast into a single seating block. This design features a high gas-flow rate, long service life, and high stirring efficiency. They are especially suited for large refining ladles. PN series of twin purging plugs can guarantee the stable running of the ladle and reduce the maintenance frequencies.

Transportation & Storage: Keep in dry condition and handle with care. Do not use if the plug shell gets rusty or the seating block gets loose or damped.

Shelf Life: 3 Months.

Main Properties of Twin Purging Plug Set (1)

ITEM		PN -W89 -X	PN -W2B -X	PN-W2S-A-X	PN-W6S-A-X
Chemical Composition	AL₂O₃+Cr₂O₃(%); ≥	89	92	94	93
Bulk Density(g/cm³); ≥	1500℃ x 3h	3.0	3.0	3.0	2.95
Modulus of Rupture (MPa); ≥	1500℃ x 3h	15	15	12	12
Cold Crushing Strength (MPa); ≥	1500℃ x 3h	70	60	60	80

MAIN PROPERTIES OF TWIN PURGING PLUG SET (2)

Naziv		PN - SK4- X	PN-T33-X	PN - T39-X
Chemical Composition	AL₂O₃+MgO(%); ≥	82	80	80
Bulk Density (g/cm³); ≥	110℃ x 16h	2.9	2.9	2.9
Modulus of Rupture (MPa); ≥	110℃ x 16h	10	8	8
Cold Crushing Strenth (MPa); ≥	110℃ x 16h	70	60	60

MgC Bricks for Ladle

Product Description:

PN series of magnesia-carbon bricks are made of high-purity and high-density fused magnesia and large crystal fused magnesia, together with high-purity graphite. Added with anti-oxidants and combined with resins and finally shaped through machine pressing.

The products are mainly applied in the slag line, melting zone, and the bottom of the ladle. The service life of the ladle can be improved using these products. They feature high strength, good thermal shock resistance, and excellent resistance to slag erosion. According to different smelting conditions and steel grades, PRCO developed a wide range of brands to satisfy different customers’ needs.

Transportation & Storage: Keep in dry condition and handle with care.

Main Properties

ITEM		PN-MT-10A	PN-MT-10B	PN-MT-12A	PN-MT-14A	PN-MT-16A
Chemical Composition	MgO(%);≥	80	78	78	76	72
Chemical Composition	C (%); ≥	9.5	9.5	11.5	13.5	15.5
Apparent Porosity (%); ≤		4.0	5.0	4.0	3.0	3.0
Bulk Density (g/cm³); ≥		2.97	2.95	2.96	2.94	2.92
Cold Crushing Strength (MPa); ≥		30	30	30	30	30
Modulus of Rupture (1400℃ x 0.5h) (MPa); ≥		6	6	6	8	8

MgO-based Ramming Mixes

Product Description:

Based on the working features of the spraying materials and combined with the weak point of the brick, PRCO developed PN series of gunning mixes made from quality raw materials such as magnesia, spinel, and unique binding agent and additives. The products feature strong adhesion, low rebounding rate, easy sintering, and excellent erosion and corrosion resistance. They are ideal for cold/hot repairs to slag lines and other parts of the ladles.

Transportation & Storage: Keep in dry condition. Do not use it if there is a lump formation.

Shelf Life: 6 Months.

Main Properties for MgO-based Ramming Mix

ITEM		PN-RM1	PN-RM2	PN-RM3
Chemical Composition	MgO (%); ≥	90	86	-
Chemical Composition	MgO + Cr₂O₃(%); ≥	-	-	88
Bulk Density(g/cm³); ≥	110℃ x 16h	2.70	2.70	2.60
Bulk Density(g/cm³); ≥	1500℃ x 3h	2.64	2.64	2.54
Cold Crushing Strength (MPa); ≥	110℃ x 16h	35	28	28
Cold Crushing Strength (MPa); ≥	1500℃ x 3h	18	10	10

Gunning Mixes for Ladle

Product Description:

Transportation & Storage: Keep in dry condition. Do not use it if there is a lump formation.

Shelf Life: 6 Months.

Main Properties for Ladle Gunning Mixes

ITEM		PN-GB8OM	PN-GB7OM
Chemical Composition	MgO (%); ≥	80	6
Chemical Composition	Al₂O₃(%); ≥	-	6.5
Bulk Density(g/cm³); ≥	110℃ x 24h	2.4	2.4
Bulk Density(g/cm³); ≥	1500℃ x 3h	2.5	2.5
Modulus of Rupture (MPa); ≥	110℃ x 24h	3	3
Modulus of Rupture (MPa); ≥	1500℃ x 3h	7	7
Cold Crushing Strength (MPa); ≥	110℃ x 24h	5	5
Cold Crushing Strength (MPa); ≥	1500℃ x 3h	30	50
Water Addition (%)		10±1	10±1
The Max Service Temperature (℃)		1750	1700

Gunning Mixes for Converter

Product Description:

PN-ZL series of gunning mixes are developed with the installation features of gunning materials and the steel-making techniques in converters. Supreme magnesite and MgO-CaO-based compounds are the main raw materials, treated with unique binders and other additives.

PN-ZL series of gunning mixes feature high adhesive strength, low rebounding rate, good sintering ability, and superior resistance to erosion/corrosion. These are ideal products for both cold and hot maintenance of converter lining.

Transportation & Storage: Keep dry and handle with care.

Special Notes: Shelf Life is within 6 months. Do not use if conglomerates appear.

Chemical Composition and Physical Properties

ITEM		PN-ZLA	PN-ZLB
Chemical Composition(%); ≥	MgO	80	65
Chemical Composition(%); ≥	CaO	3	7
Bulk Density(g/cm³); ≥	110℃ x 24h	2.3	2.3
Bulk Density(g/cm³); ≥	1500℃ x 3h	2.5	2.5
Modulus of Rupture (MPa); ≥	110℃ x 24h	3	3
Modulus of Rupture (MPa); ≥	1500℃ x 3h	10	10
Cold Crushing Strength (MPa); ≥	110℃ x 24h	8	8
Cold Crushing Strength (MPa); ≥	1500℃ x 3h	40	40
Water Addition (%)		11±1	10±1
Max Service Temperature (℃)		1750

MgC Bricks for Converter

Product Description:

PN series of MgC bricks for converters are designed according to different operating conditions and application areas of the converter lining. The bricks are made of pure flake graphite and large fused crystal magnesia which has high purity and density. Added with special antioxidants and use resins as binders and finally shaped under high pressure.

PN series of MgC bricks are mainly used in the working lining of the converter. It features high strength, superior thermal shock resistance, and slag corrosion resistance, etc. Based on different smelting conditions and application areas, PRCO provides various brands to choose from.

Transportation and Storage: Keep dry and handle with care.

Chemical Compositions and Physical Properties

ITEM		PN-MT10A	PN-MT14A	PN-MT14B	PN-MT14C	PN-MT16A
Chemical Composition (%); ≥	MgO	76	72	72	72	70
Chemical Composition (%); ≥	C	10	14	14	14	16
Apparent Porosity (%); ≤		5.0	3.0	4.0	4.0	3.0
Bulk Density (g/cm³); ≥		2.98	2.95	2.94	2.94	2.92
Cold Crushing Strength (MPa); ≥		40	35	35	35	30
Modulus of Rupture (1400℃ x 0.5h) (MPa); ≥		6	8	8	6	8

Spraying Mixes for Tundish

Product Description:

PN-ZQT-M85 series of lightweight spraying mixes are made of high-quality magnesia and mixed with binders, plasticizers, and anti-detonators. The products feature easy installation, excellent insulation ability, liquid steel purifying ability, etc. They are developed to produce quality steel as well as clean steel.

PN-ZQT-M70 series of lightweight spraying mixes are made of high-quality magnesia and olivine. The products contain no sulfur or phosphorus and conduct no pollution to liquid steel. They feature excellent insulation effects and long service life. They are widely applied and accepted by customers both domestically and abroad.

Notes: Keep in dry condition and do not use if agglomeration occurs.

Shelf Life: 6 Months.

Main Properties

ITEM		PN-ZQT-M85	PN-ZQT-M70
Chemical Composition (%)	MgO; ≥	85	60
Chemical Composition (%)	SiO₂; ≤	10	30
Water Addition (%)		22.5 ± 2.5	22.5 ± 2.5
Bulk Density (g/cm3); ≥	110℃ x 16h	1.5 ± 0.3	1.5 ± 0.3
Cold Crushing Strength (MPa); ≥	110℃ x 16h	3.0	2.0
Cold Crushing Strength (MPa); ≥	1500℃ x 3h	6.0	5.0
Thermal conductivity (W/m • K); ≤	500℃	0.60	0.55
Linear Change (%)	1100℃ x 3h	± 0.5	± 0.5
Linear Change (%)	1500℃ x 3h	-1.5 ± 1.0	-1.5 ± 1.0

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