| Customization: | Available |
|---|---|
| Classification: | High-Alumina |
| Feature: | Good Mechanical Strength, Good Thermal Insulation Performance, High-Temperature Resistant, Low Thermal Conductivity |
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1.PRODUCT OVERVIEW:
Purging plug, being an important element in high temperature refining metallurgy, having been widely used in many industries, such as iron and steel, ferro alloy, non-ferrous metals etc. We have more than 20 years production experience in purging plug and housing block, with annual production capacity over 50,000 sets.
For many years, we are in the leading position for researching and producing high quality purging blowing products in China. According to years experience of on site inspection, we have successfully developed many types of purging plug, including slit type, segment type(plate type), porous type. Adopting unique forming workmanship, special maintenance method, high temperature firing technology, our purging products come with feature of long service life, high blowing rate, safe and reliable. Our purging products have been widely recognized by domestic and abroad large and medium-sized steel mills with excellent performance feedback.
| Item | Purging Plug | Housing block | |
| Corundum-Mullite | Corundum-Spinel | Corundum -Spinel | |
| Al2O3/(%) | ≥90 | ≥90 | ≥90 |
| Bulk density/(g/cm3) | ≥2.9 | ≥3.0 | ≥3.0 |
| Porosity/(%) | ≤18 | ≤20 | ≤15 |
| Crushing strength/(MPa) | ≥40 | ≥50 | ≥50 |
| Refractoriness underload/(T0.2,C) | ≥1700 | ≥1700 | - |
| Ventilation volume(0.4MPa), m3/h | 6-50 | - | |
3.Other hot sale type:
With the development of ladle refining technology and ladle lining refractories, higher requirements are imposed on the blowing rate and lifetime of purging refractories. In order to meet the metallurgical needs of different steel types and different refining processes (RH, LF, VD, VOD, VAD, CAS, ANS), we have developed the following series of purging refractories.
Slot Plug(slit plug)
Slot plug is the most common structure in purging plug.
The gas channel could be designed and customized according to actual on-site using conditions, including refining steel grade, refining workmanship, ladle capacity, temperature, hydrostatic pressure of liquid steel etc.
This can achieve the best blowing effect for purging plugs, ensure the longest service life, safety, stability and best air permeability.
| Item | Core | Outer |
| Al2O3/(%) | ≥85 | ≥85 |
| Al2O3+MgO+Cr2O3 /(%) | ≥93 | ≥90 |
| Bulk density/(g/cm3) | ≥3.0 | ≥3.0 |
| Porosity/(%) | ≤18 | ≤15 |
| Crushing strength/(MPa) | ≥90 | ≥60 |
| Refractoriness underload/(T0.2,C) | ≥1650 | ≥1650 |
| Ventilation volume(0.4MPa), m3/h | 6-50 | |
| Item | Purging Plug | Housing block | |
| Corundum-Mullite | Corundum-Spinel | Corundum -Spinel | |
| Al2O3/(%) | ≥90 | ≥90 | ≥90 |
| Bulk density/(g/cm3) | ≥2.9 | ≥3.0 | ≥3.0 |
| Porosity/(%) | ≤18 | ≤20 | ≤15 |
| Crushing strength/(MPa) | ≥40 | ≥50 | ≥50 |
| Refractoriness underload/(T0.2,C) | ≥1700 | ≥1700 | - |
| Ventilation volume(0.4MPa), m3/h | 6-50 | - | |
4.Application characteristics:
1. Resistant to slag
In order to increase resistance ability to slag and liquid steel penetration, Cr2O3 or chromium corundum is always added into corundum spinel. Cr2O3 has the same crystal structure with a-Al2O3, the adding of Cr2O3 can effectively improve the slag resistance ability of materials, also can improve the gas channel blocking condition caused by liquid steel penetration.
The aluminum-chrome solid solution and independent chrome-bearing glass phase which were formed by Cr2O3 fine powder and Al2O3 under high temperature, can form into liquid phase with certain viscosity, when meet with the slag in steel smelting process. This liquid phase can avoid the slag erosion to porous plugs, and also absorb the Iron oxide and magnesium oxide, forming dense spinel on plug's working surface, thus further improve the slag resistance of the plug.
2. Thermal shock resistant
The main damage to porous plug is thermal shock. As the tapping temperature increasing, there existing big temperature gap onto working surface during work and break. After introducing spinel phase into the structure, the thermal resistance of purging plug is increased significantly. The oxide and non-oxide added into porous plug will form into solid solution phase with aggregate under high temperature, which will increase the high temperature strength, air permeability, resistance to slags of the plug. After high temperature burning for the plug, the performance is increased to meet different steelmaking conditions.
We can provide comprehensive transportation solutions, including sea freight, express delivery, and air freight.
1. Professional in Technical Support
We have over 100 experienced technical engineers ranging from slide gates to purge plug and NFC, capable of providing comprehensive advice or solution from pre-sales to after-sales procedures.
2.Efficient in Communication
Professional and effective sales team will lower the communication cost to minimum. Getting what you need in shortest time and Supplying what you will need precisely.
3.Strict in Ouality Control
Advanced testing instruments have been set to further increase standards on pre-factory testing. We are striving to reduce the error rate below 0.01%. Making sure each product arrives at customers'warehouse in perfect condition.
4.Forty years production experience
Focusing on producing high quality slide gate refractories ever since 1983, with over 17 years experience in international trading, Fully familiar with complete procedure of exporting and importing.
5.Experienced in after-sale services
The deal is not end of our cooperation, it's just the beginning.Our services just start from cooperation, we will follow the performance and feedback of each delivery.
6.On-Site Follow up
Our team "sales+engineer" is available for on-site follow up in worldwide steel plants. With a direct visit on site, we can offer best solution to steelmakers for saving budge per ton steel.
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