Steel And Iron Industry Refractory Material Description
Steel and iron making industry consume 60%~70% of produced refractory material, so the development of steel and iron industry is curial to the development of refractory material industry. Refractory material are mainly used as furnace lining for iron and steel smelting. Refractory material plays an important role for steel quality and purity. For example, when producing low carbon steel, ultra low carbon steel and stainless steel, carbon containing refractory material should not be used as furnace lining, or carbon will dissolve into steel liquid and cause the increase of carbon in steel. Refractory materials containing SiO2, Cr2O3 and silicate binders have certain degree of high temperature oxidability, they will supply oxygen to steel liquid under high temperature or vacuum conditions, which can lead to the exceed of oxygen content.
Refractory materials also play a key role for cutting the cost of steel making. It’s not only the benefits brought from unit refractory materials consumption decrease, but also the more important indirect benefits such as longer furnace service life, smooth production and operation . As known for us, the service life of blast furnace, converter, electric arc furnace, refinery furnace, steel ladle and tundish will have fundamental influence for production efficiency, invest and benefits. Meanwhile, the insulating materials used for heat storage of metallurgical vessels also have significant influence on energy consumption.
The development of steel and iron smelting technique can prompt the development of refractory materials. For instance:
BOF top and bottom blowing technique. Top and bottom blowing converter requires long service life air supply system, so magnesia carbon air supply modules are developed.
Near-net-shape continuous casting technique. It requires the thin wall to have extraordinary corrosion resistant sub-entry nozzle and side seal. If these new products can’t be developed or can’t meet using standards, near-net-shape continuous casting technique won’t be developed.
Direct current electric furnace. In a fairly long time, because the bottom electrode material can meet the requirement, direct current electric furnace steel smelting technique is constrained. Until ABB and RHI company cooperatively developed bottom electrode electricity conducting refractory material, direct current electric furnace steel making technique is substantially developed.
Likewise, if sub-entry nozzle is not developed, continuous casting technique will not be invented. In a word, refractory material should follow the step of metallurgical technique and meet the requirement of new smelting crafts and contribute to the development of metal smelting technology.
Rongsheng Kiln Refractory Main Advantages
Quality Assurance
We strictly abide by the quality standards for every order, all the refractory products we offered can meet or even surpass customers’ requirement. We attach importance to every detail during communication to make sure we fully understand the technical performance and application condition, and provide the best solution.
Cost Effectiveness
We firmly believe that things can not only be done, they can be better done. From raw material selection to production and transportation, our professional technical members and business members do the best to minimize the cost and produce the best cost effective products.
Timely Delivery & Reliability
We understand on time delivery is critical for our customers, so we work hard and make reasonable plan and contingency plan to promise the timely delivery and reliability. We have also established a comprehensive Quality Management System for continuous improvement.
AC Electric Furnace Bottom Refractory Material Description
AC electric arc furnace bottom was primarily constructed by pitch & tar bind magnesia ramming mass or brine magnesia sand. Brine magnesia ramming mass has poor erosion resistance, can’t m...
Continuous casting steel ladle’s working condition is severer than mold casting steel ladle, so continuous casting steel ladle should choose high-quality refractories. EAF ladles and converter ladles have different working conditions, such as turnover s...
Al-Mg-C refractory material used in Steel ladle description
Since 1980s, steel industry is going through a quick development period, especially with the application of continuous casting and out furnace refining techniques and the increase of pure...
Electric Arc Furnace Cover Refractories Description
The function of electric furnace cover is heat insulating and environment protection, avoiding the diffusion of dust in the furnace. In the central zone of furnace cover, there is holes for inserting...
An electric arc furnace is an equipment for making steel by using an electric arc occurring between an electrode end and a charge as thermal energy. The development of electric arc furnace technology is to develop DC electric arc furnace, furnace bottom...
Electric Arc Furnace Wall Refractory Material Description
For small size electric arc furnaces, low price and low grade refractory materials such as pitch bound magnesia bricks, low grade magnesia carbon bricks and magnesia sand patching material...
Cement Kiln Bricks Description
Rotary cement kiln refractory bricks’ quality and construction technique and working environment can directly influence efficiency and clinker output of cement kiln. So factors which will affect the service life of r...
Factors Affecting Rotary Converter Refractory Material Damage
Refractory material quality plays a fundamental role for the service life of rotary converter. Magnesia carbon bricks are universally used in rotary converters now. So the refractoriness,...
Electric Arc Furnace Refractory Material Description
Electric arc furnace make use of waste steel to smelt steel. During steel smelting, furnace bottom will expose to steel liquid chemical corrosion, mechanical abrasion and impaction, thermal shock...
Cement Kiln Bricks Description
Cement kiln refractory bricks’ service life can directly affect operating rate and clinker output of cement kiln. The working period of new type dry cement kiln refractory bricks should be no less than 10 months, refractory b...
HP&UHP EAF Cover Refractory Description
For high power and ultra high power electric arc furnace, which’s smelting condition is more severe, high grade refractories such as corundum castable, corundum precast block, chrome corundum castable, c...
Induction Furnace Refractories Description
Induction furnace is steel smelting equipment, which can generate strong electromagnetic field when the induction coil is powdered on. So raw material such as scrap steel in induction furnace will generate...
Iron Liquid Pre-Treatment Refractory Material Description
With the development of metallurgy industry, steel species and quality is continuously enhancing. So there are stricter requirement on steel liquid quality, i.e., steel liquid has lower sulfur,...
Steel ladles can be divided into mould casting ladles and continuous casting ladles. Mould casting ladles’ working condition is better than continuous casting ladles because steel loading time is shorter, steel liquid temperature is lower and turnover i...
LF and Asea-SKF furnace Refractories
LF and Asea-SKF furnace are out furnace refinery equipment, which can further treat converter and EAF smelted steel liquid. Through processing procedures such as adding synthesized slag and alloy, wire feeding,...
Problems And Solutions Of Refractory Materials Used In Tundish
Refractory materials used in tundish including alumina zirconia precast block or corundum mullite castable for permanent layer, dry vibration material, nozzle brick and well block for...
Reasons For Refractory Material Damage Of Converter Working Lining
The mechanism of refractory material damage in converter working lining is very complicated, generally speaking, under the combined action of physical, chemical and thermal stress...
The ceramic cup technique is invented by France SAVOIE company. The ceramic cup technique synthesized furnace bottom and furnace hearth by different kinds of composite refractory materials and constructed into a closed ring type furnace lining, i.e. ceramic...
Converter Steel Smelting Description
The main methods of steel smelting in the world are converters, electric arc furnaces and open hearth furnaces. Open hearth furnaces are almost abandoned, converters steel smelting accounts for 70% of steel output....
Hot blast furnace is a kind of thermal equipment which heats the air blasted into blast furnace from room temperature to high temperature. Hot blast furnaces can be divided into internal combustion type and external combustion type, the furnace body consists...
Iron Mixing Furnace Description
Iron mixing furnace is iron liquid loading equipment, which can keep iron liquid temperature and composition homogeneous, as well as get good connection and balance between small iron liquid ladle and large scale steel...
Refractory Materials Applied In Iron And Steel Industry
The main raw materials used in blast furnace are iron ore(natural or synthesized), fuel(coke and fuel injection), flux( lime or dolomite). Modern steel making production flow is: iron ore smelt...
Blast furnace is a kind of vertical type thermal equipment for continuous iron smelting in high temperature and reduction atmosphere , which uses blasted hot air to make coke burn and reduct molten iron ore to metal iron. From top to bottom, blast furnace ...
The steel liquid smelted in blast furnace will be poured out from tap hole, runs through the main channel, tapping channel and swing iron spout and finally flows into foundry ladle. There is are slag skimmer between the main channel and tapping channel,...
Blast furnace iron smelting possesses the dominant position for a long term, but with the strained supply of coke and severe environmental pollution, new iron smelting technique is researched and now there are two matured non coke iron smelting methods:...
Rotary Converter Refractory Material Description
To enhance converter’s service life, the quality of refractory material is an important factor, while operation condition is another more important factor, because good working condition is the ba...
Slide Nozzle and Slide Plate Description
Slide gate nozzle is the equipment installed at the bottom of steel ladle( or tundish) to control the flowing of liquid steel. Slide nozzle composes top and bottom nozzle bricks and top and bottom slide plates. ...
The function of steel ladle is to continue the molten steel of upstream steel furnace, which delivered the molten steel to external refining equipment or the scene of casting steel. Steel ladle not only has the division between die cast steel ladle and...
Steel Ladle Al2O3-MgO-C Refractory Description
With the rapid development of steel smelting technique, especially with the application of continuous casting and out furnace refining techniques, the requirement on ladle refractory material is much...
During steel casting, well blocks are used to hold the bottom end of the stopper. when casting is finished, well blocks will ensure the stopper slide to the nozzle along the cambered surface to stop steel liquid mainstream. By material composition, Steel...
Steel Tapping Hole Refractory Material Description
Ordinary electric arc furnace’s steel tapping method is groove type, which needs great inclination angle, has high erosion speed to refractory material. So electric furnace’s service life is short, ste...
