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1,Description of Electric furnace roof prefabricated block: VD furnace cover, VOD furnace cover, LF furnace cover, tundish cover,The large-scale high aluminum prefabricated block for the top cover of electric furnace is produced by large-scale pouring equipment. The high-quality calcining or electrofusion raw materials are selected, the appropriate raw material particle size is selected, after full mixing, the large-scale vibration molding equipment is selected, the full vibration casting molding is adopted, and the high-temperature binder is added to make the product structure more compact, higher than the density of general high aluminum brick. The product is a large block with gradual assembly and few gaps. During the use of the product, the high temperature resistance, heat flow erosion resistance and radiation resistance are enhanced, and the spalling resistance is excellent. Under high temperature, the structural performance of the product is stable, and the use effect is far higher than that of high aluminum brick masonry. It is the preferred electric furnace top cover product of various iron and steel plants
2, Main performance parameters of Electric furnace roof prefabricated block
ITEM | UNIT | DLG-70 | DLG-90 |
Al2O3 | % | >70 | >90 |
Density | g/cm3 | 110℃*24h, 2.80 1500℃*3h, 2.75 | 110℃*24h, 2.95 1500℃*3h, 2.90 |
Linear change rate | 1500℃*3h,% | ±0.7 | 0-+0.5 |
Flexural strength | Mpa | 110℃*24h, 5 1500℃*3h, 15 | 110℃*24h, 10 1500℃*3h, 18 |
Compressive strength | Mpa | 110℃*24h, 25 1500℃*3h, 50 | 110℃*24h, 60 1500℃*3h, 70 |
3, Characteristics of Electric furnace roof prefabricated block:
1) Good integrity, convenient construction,the product is a large prefabricated block, and each product has a heat-resistant steel hook. The user only needs to hoist each product on the top of the electric furnace and assemble it together, and then use high-temperature bonding fireclay to smear the gap, which saves time and is faster than the original masonry of each high aluminum brick
2) Strong resistance to arc radiation,the product is made of pouring block produced by large-scale pouring equipment, phosphoric acid high-strength binder as binder, after long-time natural drying and high-temperature baking drying. The compactness, high-temperature resistance, arc radiation resistance and thermal shock resistance of the product are superior to those of the original high alumina brick, which is commonly used in major iron and steel plants. After assembly, the overall structure of the product is tight, without cracks and falling off, and its service life is longer than that of the original high alumina brick masonry
3) It has good resistance to rapid cooling and heating
4) High strength in cold state and hot state
5) Resistance to steel slag and high temperature airflow erosion
4,Application:Mainly used in electric furnace roof
5,Good feedback of product use effect,the products have been exported to South Korea, Russia,Pakistan
6,We are a professional supplier, who can provide customers with free product technology, use and other issues,our factory has more than ten years of perfect production experience and production technology, with advanced equipment and leading technology. Our products are used well in Shougang Group Company, Baosteel company, Shandong Iron and steel company and other large-scale iron and steel plants in China. At present, our products are exported to many countries, welcome customers and friends to discuss and exchange
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Contact me:
Email:wp@cnjingganrefractory.com/sdwenping@163.com
TEL: 86-0533-4188518 / FAX: 86-0533-4188518
Rose:+86-13275332819(wechat/whatsapp number)
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