Ruizhi Refractory, refractory material, refractory manufacturer, refractory company, refractories: Effect of additives on the oxidation resistance of...

Ruizhi Refractory, refractory material, refractory manufacturer, refractory company, refractories: Effect of additives on the oxidation resistance of...: Effect of additives on the oxidation resistance of aluminum-carbon submerged nozzles 1. SiC can not play the role of anti-oxidation on alum...

Effect of additives on the oxidation resistance of aluminum-carbon submerged nozzles

Effect of additives on the oxidation resistance of aluminum-carbon submerged nozzles
1. SiC can not play the role of anti-oxidation on aluminum carbon refractory materials, Si, Al, B4C and composite additives can play a certain degree of anti-oxidation effect on aluminum carbon submerged entry nozzle, among which B4C anti-oxidation effect is the best.Tundish Nozzle Well Block
2. The anti-oxidation mechanism of Si, B4C and Al powders is mainly based on their affinity for oxygen being greater than C, which is preferentially oxidized. In addition, they generate new phases during the oxidation process, change the microstructure of the material, reduce the porosity of the material, and improve the oxidation resistance of the material. Tundish Nozzle
3. Both Al and Si powder form a ceramic bond with other components in the refractory material during heat treatment, so they can increase the strength of the material to a certain extent, and Si powder increases the strength of the material to a greater extent.

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http://www.ruizhirefractory.com/en/new/effect-of-additives-on-the-oxidation-resistance-of-aluminum-carbon-submerged-nozzles.html

Ruizhi Refractory, refractory material, refractory manufacturer, refractory company, refractories: Yingkou Ruizhi Refractories Co., Ltd.

 Yingkou Ruizhi Refractories Co., Ltd.
Yingkou Ruizhi Refractories Co., Ltd. is located in the magnesia city of China, Dashiqiao City, which is very rich in magnesia resource. Ruizhi Refractories is a professional manufacturer of refractory material for high temperature melting furnaces.

http://www.ruizhirefractory.com/ 

Yingkou Ruizhi Refractories Co., Ltd.

Yingkou Ruizhi Refractories Co., Ltd. is located in the magnesia city of China, Dashiqiao City, which is very rich in magnesia resource. Ruizhi Refractories is a professional manufacturer of refractory material for high temperature melting furnaces.

Ruizhi Refractories has more than 10 sets of different kinds of brick pressing machines, two of them are 1250 tons friction press and four are 630 tons friction press, and some other types of brick press. Besides, Ruizhi Refractories also has six dry kiln production lines. We are in the leading position for production technology, some of Ruizhi products are advanced internationally. Ruizhi Refractories has a complete set of experimental and testing machines to effectively monitor the whole production process.

Ruizhi Refractories’ main products are: Refractory material for converter, electric arc furnace, ladle, LF furnace, tundish, foundry ladle, torpedo ladle, etc. Shaped refractories like magnesia carbon brick, magnesia-alumina carbon brick, magnesia spinel carbon brick, alumina-magnesia carbon brick, carbon free spinel brick, alumina sic carbon brick, etc.; unshaped refractories like repair material, dry vibration mix, nozzle filling sand, gunning mix, ramming mass for electric arc furnace bottom, etc.

http://www.ruizhirefractory.com/ 

Ruizhi Refractory, refractory material, refractory manufacturer, refractory company, refractories: Detailed explanation of high aluminum anchor brick...

Detailed explanation of high aluminum anchor brick

Anchor brick is also called hanging brick and anchor, anchor brick is a new type involving an anchor brick for industrial kiln. The electric furnace roof is a furnace roof structure supported by metal hanging brick and refractory brick. Therefore, the leakage of reactive gas and hot gas in the furnace will damage the metal hanger, resulting in the accident of furnace roof collapse.

Article sourse:
http://www.ruizhirefractory.com/en/new/detailed-explanation-of-high-aluminum-anchor-brick.html

Detailed explanation of high aluminum anchor brick

Anchor brick is also called hanging brick and anchor, anchor brick is a new type involving an anchor brick for industrial kiln. The electric furnace roof is a furnace roof structure supported by metal hanging brick and refractory brick. Therefore, the leakage of reactive gas and hot gas in the furnace will damage the metal hanger, resulting in the accident of furnace roof collapse. Industrial kilns and flue walls are composed of inner lining, heat insulation layer and outer wall layer. The inner lining is refractory brick and the outer wall is ordinary sintered brick. Anchorage is required to be connected between these layers, the tensile strength and flexural strength of the anchorage is significantly improved, and the stress generated at the groove is blocked at the ribs and cannot be transmitted, so the anchor brick of this structure is not easy to break.
Precautions for masonry of anchor bricks:
1. When laying bricks, apply mud from both sides carefully to prevent gas leakage from the furnace roof
2. There should be no damage to the hanging part of the anchor brick (should play the role of hanging metal parts)
3. Ensure the size of the joints, carry out roofing, and correctly determine the role of the hanging metal parts
4. Expansion joints should be properly placed between the furnace body and the anchor brick
5. Generally use air hardening mud
Product Features:
1. Refractoriness. The refractoriness of high-alumina bricks is higher than that of clay bricks and semi-silicon bricks, up to 1750-17900C, which belongs to advanced refractory materials.
2. Load softening temperature. Because high alumina products have high A1203, less impurities, and less fusible glass body, the load softening temperature is higher than clay bricks. The load softening temperature of high alumina products is generally above 1420-1550 degrees. However, because the mullite crystals do not form a network, the load softening temperature is still not as high as that of silica bricks.
3. Slag resistance. There are many A1203 in high alumina bricks, which are close to neutral refractories and can resist the erosion of acid slag and alkaline slag. Because it contains SiO2, the resistance to alkaline slag is weaker than that of acid slag.
4. Chemical resistance. High-alumina refractory products have good resistance to acid or alkaline slag, corrosion and oxidation of metal liquids, and reduction reactions, and increase with the increase of AL203 content and the decrease of harmful impurities.
Product Usage:
High alumina bricks are mainly used for lining blast furnaces, hot blast stoves, electric furnace tops, blast furnaces, reverberatory furnaces, and rotary kilns. In addition, high-alumina bricks are also widely used as regenerative lattice bricks for open hearth furnaces, plugs for pouring systems, and Shikou Moumou, etc.

Article sourse:
http://www.ruizhirefractory.com/en/new/detailed-explanation-of-high-aluminum-anchor-brick.html