Brief introduction of gunning material

 The EAF gunning material bears the same high temperature and harsh working environment as the repaired furnace lining during the smelting process. Therefore, in addition to high refractoriness, erosion resistance, erosion resistance, spalling resistance, etc., the EAF gunning mix must also be compatible with the repaired furnace lining. The lining has good adhesion.

The gunning materials for electric furnaces include magnesia, magnesia-dolomite, magnesia-chromite, magnesia-carbon, magnesia-dolomite-carbon, etc., and some highly active seawater magnesia are used in the aggregate. To promote sintering and improve the density and strength of the gunning layer. In order to make the gunning material solidify quickly during the gunning operation and attach to the furnace lining at the same time, a small amount of additives are often added to the aggregate.

1.When adding Al, Mg and other low melting point metal powders for gunning, the oxidation heat of metal powder helps to increase the temperature, and harmless oxides are formed in the EAF gunning material to improve the adhesion between the gunning layer and the furnace lining.

2.Add spinel Cr2O3, SiC, B4C, etc. to improve the oxidation resistance and corrosion resistance of the material.

3.Add a small amount of organic fibers with a length of 1~5mm, and melt at low temperature to form air passages, which is conducive to the evaporation and discharge of water in the binder and prevents bursting.

4.Add 0.1~2mm and 10~40mm long metal fibers for tapping and other parts to improve the corrosion resistance of the gunning layer.

5.Add part of the slag of the metallurgical furnace to improve the adhesion and corrosion resistance of the EAF gunning mix.

We Changxing Refractory Material Co.,LTD is professional manufacturer and supplier of refractory materials for more than 30 years. Our high quality EAF gunning material 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:Brief introduction of gunning material
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

 

Global steel demand growth expected to be lower in 2022

 The magnitude of the impact of the Russian-Ukrainian conflict varies by region, depending on the region’s direct trade and financial exposure to Russia and Ukraine. The conflict had a direct and devastating impact on Ukraine, and the European Union was also affected to a certain extent due to its high dependence on Russian energy. Not only that, the impact of the Russian-Ukrainian conflict has also spread globally due to rising energy prices (especially the refractory raw materials needed for steel production), resulting in continued disruption of supply chains in some regions, a problem that has plagued the global steel industry even before the conflict broke out.?

The impact of the Russian-Ukrainian conflict continues to spill over, superimposed on the slowdown of China's economic growth, the World Steel Association predicts that the growth of global steel demand in 2022 is expected to decrease. In addition, the continuous outbreak of the new crown pneumonia epidemic and rising interest rates in some parts of the world have also brought risks of economic downturn. The expected tightening of U.S. monetary policy will increase the risk of financial fragility facing emerging economies.

The forecast for global steel demand in 2023 is highly uncertain. The World Steel Association said the forecast is premised on the end of the Russian-Ukrainian conflict in 2022. In addition, the geopolitical pattern surrounding Ukraine will have an extremely far-reaching impact on the global steel industry, including the adjustment of the global trade pattern, the transformation of energy trade and its impact on the energy transition, and the continuous reconfiguration of the global supply chain.

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:Global steel demand growth expected to be lower in 2022
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