Ductile Iron Recessed Manhole Cover

Ductile Iron Recessed Manhole Cover

The electric furnace cover is a large-scale prefabricated product, which is including high aluminum quality and corundum quality, It is made of special grade Calcined Bauxite and corundum as main material and aluminate cement as binder through pouring, vibration molding, drying, demoulding and baking. The baking temperature of the product is 400 ℃ - 600 ℃, the use times of high aluminum products are 80-110 times, and the use times of corundum products are 160-220 times.
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Description

Our mission is to become an innovative supplier of high-tech digital and communication devices by providing value added design, world-class manufacturing, and service capabilities for Castable For Iron Trough, Chrome Brick For Glass Fiber Furnace, Cement Blanket. Our company has won more and more customers' favor due to advanced technical support, international production process, world-class product quality, ultra-high standard self-demand and efficient production team. Our core competitiveness is 'internet thinking, artistic innovation, intelligent services, and popular products'. We set up sales shop, show room, and product warehouse.

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)


Our company integrates product design, manufacturing, marketing and technical support, professionally providing Ductile Iron Recessed Manhole Cover and related integrated supporting services. After years of hard work, we have accumulated rich experience in after-sales service. Besides, we also have a group of sales and technical personnel with excellent technology, good service and pioneering spirit. In the face of fierce market competition, we are relying on our own advantages to integrate external resources, optimize internal management, continue to innovate, and make strides towards professionalization and diversification of business.

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  • Tel: +86-533-4188518
  • Mob: +8613275332819
  • E-mail: sdwenping@163.com
  • Add: Room 711, NO.3, Yanhe Road, Boshan, Zibo, Shandong, China