#r.u.l.

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HAR1 by Eths (featuring Björn "Speed" Strid) from the album Ankaa

[arwayaeyen20]

Whole Hearts

-R.U.L

https://bigthings2tell.wordpress.com/2019/01/27/whole-hearts/

[cxrefractories]

What is the erosion process of magnesia carbon bricks in the process of electric furnace smelting

The basic process of magnesia carbon brick erosion is:

(1) After the EAF magnesia-carbon brick is reacted, it is divided into three layers: the original brick layer (the brick body that has not reacted), the decarburized layer (the internal MgO and carbon undergo a self-consumption reaction), and the dense layer (the part in contact with the steel slag).

(2) The MgO and carbon inside the magnesia-carbon brick undergo a self-consumption reaction at high temperature:

(3) The oxides in the slag react directly:

Magnesium oxide is reduced to become magnesium gas, which migrates along the pores of the refractory material to the surface and is secondary oxidized to MgO, and forms a high-viscosity lithofacies structure with other impurity elements in the middle of the brick body, that is, the so-called dense layer.?

The erosion process is as follows:

(1) Physical wear. During the blowing process of these lithofacies, the movement of the physical steel slag furnace gas causes its physical and mechanical wear and peeling into the slag.

(2) Chemical attack. The chemical action is that various components in the middle of the slag will react with the dense layer of the brick body, and FeO can promote the dissolution and transfer of magnesia to the middle of the slag, increasing the erosion of EAF magnesia carbon bricks.

(3) The effect of temperature on erosion. The higher the temperature, the lower the viscosity of the steel slag, the intensified physical erosion, and the deepening of the decarburized layer, resulting in intensified erosion.

We Changxing Refractory Material Co.,LTD is professional manufacturer and supplier of refractory materials for more than 30 years. Our high quality EAF magnesia-carbon brick are good sold to many countries say South Africa, Bangladesh, Indonesia, Malaysia, etc. Shall any interests, welcome to contact us. Our team would make best to be your reliable partner!

Article Source:Why is the R.U.L of refractory materials a key indicator Company name: Henan Changxing Refractory Materials Co.,Ltd More refractory products:https://www.cxrefractories.com/en-product-solution Email:info@cxrefractories.com Website:https://www.cxrefractories.com

[pro-city-consulting]

Die Pro City Consulting UG stellt heute die Firma R.U.L. Lenart Gebäudereinigung GmbH aus Stuttgart vor.

[cxrefractories]

Why is the R.U.L of refractory materials a key indicator

The actual temperature that the refractory product can withstand is slightly higher than the load softening temperature, mainly for two reasons. First, in actual use, the load on the refractory product is generally lower than the load during the measurement; The second is the masonry in metallurgy. The refractory fire bricks in the furnace are only heated on one side.

Since the temperature experienced in actual use is higher than the load softening temperature, higher requirements are imposed on the refractory product. The softening temperature of the refractory product depends mainly on its chemical mineral composition and microstructure. The crystalline phase forms a network backbone, and the load softening temperature of the material is high. If the structure is dispersed in the liquid phase in an island shape, the load softening temperature is determined by the content of the liquid phase and its viscosity. For example, the more the liquid phase or the smaller the viscosity, the lower the load softening temperature. The interaction of both the crystalline phase and the liquid phase also changes the amount and nature of the liquid phase. The degree of compactness of the product also has a certain influence on the softening temperature of the load. The commonly used magnesium brick phase composition, mainly periclase crystals, is bonded together by the combination, so the load softening temperature of the magnesium bricks depends on the nature of the combination. The combination of magnesia bricks is generally a low-melting silicate phase such as calcium forsterite and magnesium rosewood. Due to the melting point phase of the periclase crystal, the viscosity at low temperature is low, and the magnesia brick exhibits a low load softening temperature. This is where the magnesia bricks need to be tackled.

We Changxing Refractory Material Co.,LTD is professional manufacturer and supplier of refractory materials for more than 30 years. Our high quality refractory products are good sold to many countries say South Africa, Bangladesh, Indonesia, Malaysia, etc. Shall any interests, welcome to contact us. Our team would make best to be your reliable partner!

Article Source:Why is the R.U.L of refractory materials a key indicator Company name: Henan Changxing Refractory Materials Co.,Ltd More refractory products:https://www.cxrefractories.com/en-product-solution Email:info@cxrefractories.com Website:https://www.cxrefractories.com

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