During the continuous casting process, air is easily aspirated through joints between nozzles, leading to the secondary oxidation of molten steel. While argon injection through the long nozzle is employed in production to prevent air aspiration, improper control of the argon flow rate can result in casting defects. Air aspiration occurs because the internal pressure …
This article analyzes the hazards and potential utilization value of discarded MgO-C bricks, reviews the research results on the reuse of MgO-C bricks and the performance of recycled refractory materials in recent years at home and abroad, lists the common problems and solutions in the reuse of MgO-C bricks, and looks forward to the future …
Current Status of Research on Reuse Technology of Magnesia-Carbon Bricks Read More »
Discover a critical component that plays a vital role in industrial production: the furnace bottom gas-permeable brick. In various high-temperature furnaces, the gas-permeable brick at the furnace bottom may seem unassuming, yet it acts like a silently dedicated “heart,” infusing the entire production process with a continuous stream of vitality. Let us unveil the mysteries …
Gain an In-depth Understanding of Furnace Bottom Porous Plugs Read More »
The steel plant currently has two 200-ton vanadium extraction converters and two 200-ton steelmaking converters. All four converters use the same construction method and feature integral tapholes with a lifespan ranging from 80 to 120 taphole cycles. Since commissioning, the steelmaking converters have frequently experienced taphole penetration (or leakage) accidents, occurring 5-7 times per year. …
Analysis of the causes of steel piercing at the tapping spout of a 200t converter Read More »
The stopper rod is a type of shaped refractory material utilized during the continuous casting process; it serves to maintain a stable liquid level within the mold, regulate the linear flow rate of the molten steel, and ensure both the surface and internal quality of the cast billet. In actual production, the stopper rod plays …
Operations at an intermediate-frequency (IF) furnace site involve the use of diverse equipment and entail the simultaneous, overlapping work of multiple trades; consequently, the environment is prone to sudden accidents and presents significant production hazards. It is therefore imperative to continuously increase investment in safety measures for IF furnace operations to ensure equipment integrity. Furthermore, …
On the surface, the smelting and pouring process appears relatively simple and quick; a single batch of molten steel takes only a few dozen minutes, without the cumbersome operations, intricate details, or lengthy timeframes associated with the mold-making process. However, upon closer examination, the smelting process involves much deeper theoretical knowledge—ranging from furnace lining characteristics, …
Introduction to room temperature thermal insulation refractories There are many specifications of thermal insulation refractory materials. We will briefly introduce them: 1.Vacuum insulation panel 1.1 Characteristics of vacuum insulation panels: (1) Convenient construction, light weight and cost saving (2) High temperature resistance, high pressure resistance and long service life (3) Good high temperature insulation performance …
1.Bulk density Bulk density of refractory material is the mass per unit volume, which is usually used to describe the density and weight characteristics of the material. Bulk density is one of the important physical and chemical indexes of refractory bricks, which can directly affect the compactness of refractory bricks, as well as thermal insulation …
Describe several technical requirements for refractory materials Read More »
Short process steelmaking in electric furnaces is a new process for steel production with scrap as the main raw material. The electric furnace consists of furnace body and furnace cover, the shell of the furnace body is made of steel plate, and the inner lining is made of refractory material. The outer ring of the …
Causes of refractory damage in various parts of the electric furnace Read More »
