Permeable dry stamp mass for furnace bottom of intermediate frequency furnace

Abstract

The invention discloses a permeable dry stamp mass for the furnace bottom of an intermediate frequency furnace. The permeable dry stamp mass is a uniform mixture of 89 percent by weight of refractory aggregate and 11 percent by weight of additive. The permeable dry stamp mass disclosed by the invention is stamped in an area with a diameter being 300-400mm and with an air brick as the center at a top of the air brick, wherein a stamping thickness is 100-250mm; and the whole furnace bottom can be stamped according to the size of the furnace body and a stamping thickness is 100-250mm. Compared with the prior art, a permeable stamp mass is stamped at the top of the air brick, so that the air brick is prevented from directly bearing the corrosion of liquid steel and the service life of the air brick is prolonged. The permeable dry stamp mass disclosed by the invention has the advantages of stable permeable performance, no blockage of an electric furnace subjected to stamping, easy operation, safe smelting and freeness of breakout accidents.

Description

technical field [0001] The invention relates to a refractory material, in particular to a breathable dry knotting material for the bottom of an intermediate frequency furnace. Background technique [0002] In order to improve the quality of steel, in recent years, most steel mills have adopted the refining technology outside the furnace and argon blowing at the bottom of the electric furnace, which has achieved good results, especially for smelting special steel such as high-grade alloy steel, stainless steel, and ultra-low carbon steel. Refining by argon blowing can achieve deoxidation, degassing, decarburization, removal of non-metallic inclusions, and even distribution of alloying. Argon blowing at the bottom of the furnace can significantly improve the mechanical properties of the product, especially the plasticity and toughness. The argon blowing technology in the bottom of the furnace is listed as an important process. As we all know, the smelting time of electric f...

AI Technical Summary

Problems solved by technology

As we all know, the smelting time of electric furnace steelmaking is long, and each furnace is smelted for 40-120 minutes. Especially with the innovation and development of electric furnace lining materials, the life of electric furnace lining materials has been increased to hundreds of furnace times; however, the key to the current furnace bottom argon blowing technology The service life of the component-permeable brick is difficult to meet the service life of the entire furnace. The two do not match, and steel breakout is prone to occur. The existing technology of permeable brick has become the bottleneck of the low service life of the electric furnace, which restricts the smelting of the electric furnace The development of special steel has become the focus of industry insiders and experts