wanhaorefractory

  Ladle Sliding Gate Mechanism Introduction: Using high grade nodular cast iron, our ladle sliding gate mechanism has good character of high volume stability and not easy to become deformed under high temperature, high uniformly stressed, easy to operation. The ladle sliding gate mechanism is used for fix the upper and collector nozzle, matched slide gate plate, and could be used for all kinds of ladle. The sliding nozzle device is composed of upper and lower slide plates made of refractory materials and a mechanical drive structure, and is installed outside the bottom of the ladle. The upper slide is fixed, and the lower slide is movable.  The sliding plate is a key component that determines the function of the sliding nozzle, and plays a role of controlling and regulating the flow of molten steel.    Ladle Sliding Gate Mechanism effect: According to the action mode of the skateboard, it can be divided into three categories:  1. Linear reciprocati

ladle Magnesia Carbon Brick Magnesia carbon brick uses fused magnesite, high purity magnesite and graphite as raw materials, pressed at high pressure and treated low temperature. The magnesia carbon brick is mainly used for ladle slag line. Customers can choose different brands according to different smelting conditions and grades of smelting steel.   ladle Magnesia Carbon Brick Advantages： High strength, erosion and spalling resistance. Application： Wanhao Refractory's Magnesia carbon brick is widely used in Shanghai Baosteel Group, Shougang Group Corporation, Anyang Iron and Steel Group Co., Ltd and Benxi Iron and Steel Co., Ltd etc. Wanhao is a manufacturer who is specialized in designing various kinds of furnace and making refractory products for electric furnace, ladle, tundish, blast furnace, AOD furnace, IF furnace, etc. article source:  ladle Magnesia Carbon Brick Company name ：Luoyang Wanhao New Material Co., Ltd. More Refractory Products: http://www.w

  1. Optimize refining slag system In the refining process, light burned dolomite is added to increase the MgO concentration in the slag, improve the basicity and viscosity of the slag, control the amount of slag in the converter and reduce the FeO content in the slag. The alkalinity of refining slag is controlled in the range of 4.2 ~ 5.0, the FeO content in slag is controlled at about 0.5%, and the viscosity of slag is adjusted, and the MgO content in slag is controlled at about 12%, which can effectively reduce the corrosion of slag to magnesia carbon brick . 2. Improve the material of slag line brick It is found that the higher the purity of magnesia used in ladle magnesia carbon brick , the less B2O3 in impurities and the higher the proportion of carbon and sulfur, the better the corrosion resistance of lining brick. It shows the effect of carbon content on the melting loss depth of magnesia carbon brick in slag line. The main principle is that the ox

  Casting Mold Powder introduction: Square billet continuous casting is rather complicated, which involved in steel types,section and casting speed. Casting Mold Powder is designed and produced according to parameter of continuous caster and detailed production situation. Casting Mold Powder has good melting property and steady quality,and is suitable for different casting conditions. Casting Mold Powder can ensure clean and smooth surface of casting block, and also can ensure that there is no shell and flux strip in mold, with even vibration mark and without defects on the surface of casting block. Applicable steel type :0.08%-0.35% C straight carbon steel ,high quality steel ,low alloy steel. Applicable section: 120mm×120mm 150mm×150mm 175mm×175mm Applicable casting speed :0.9-3.0m/min article source:  Casting Mold Powder Company name ：Luoyang Wanhao New Material Co., Ltd. More Refractory Products: http://www.wanhaorefractory

  Neutral Ramming Mass Introduction: Wanhao Ramming Mass used in induction furnace for basic lining. We are offering neutral ramming mass, which is featured with rust resistance, wear resistance and thermal stability. Neutral ramming mass contains very less binders, moisture content and fire clay. Neutral Ramming Mass's characteristics are small input, corrosion resistance, high impact resistance, and simple on-line maintenance. Neutral ramming mass is able to resist penetration & protrusion of cracks & pores into the refraction lining, thus providing safety from penetration of molten steel towards the heat sensitive crucible & neutral ramming mass also ensures easy removal while replacing the lining. Neutral Ramming Mass  Advantages:  The advantages of neutral mass includes that it does not produces water vapors while in use and it can be beneficial in tapping iron directly, without any need to bake once the construction is finishe

  Silica Ramming Mass Introduction: Wanhao Refractory's induction furnace lining material is called “mixed sand” for short. It is also called acidic ramming mass. This product is the main refractories of the medium frequency induction furnace used by the small steel enterprises. Its effect is in leading position. Wanhao Refractory offers kinds of ramming mass, silica ramming mass, acidic ramming mass and basic ramming mass. Silica Ramming Mass, also known as Acidic Ramming Mass, plays a crucial role in induction furnaces during melting of steel. This substance is used to line induction furnaces. Ramming mass has a very important quality of withstanding and easily absorbing thermal shocks. Silica Ramming Mass that we provide is manufactured under strict quality control. Silica ramming mass is made of high purity microcrystalline quartz sand, powder, adding high temperature sintering flux and mineralizer. Silica ramming mass is a product to be used i

  Ladle Nozzle Introduction: Ladle upper/lower nozzle series are developed with the newest matrix optimization technology and the theory of the most compact. They are characterized by good thermal shock resistance, strong washout resistance, steady quality and long life. One set nozzle include ladle nozzle and collector nozzle, and ladle nozzle service life can be make sure more than 8 heats. Ladle nozzle is composed of upper and lower sliding plates and 4 refractory bricks for the upper and lower nozzles. The pouring of each ladle of molten steel must pass through the upper and lower sliding plates and the upper and lower nozzles, so they are very strict. Firstly, they must have sufficient strength at high temperatures to withstand the static pressure of molten steel. Secondly, the upper and lower sliding plates are required. The sliding surface should be very smooth, flatness should be high, to ensure tight contact, to ensure that no molten steel leaks d

  When pouring calcium treated molten steel, Ca and Cao in molten steel will react with Al2O3 and SiO2 in aluminum carbon or aluminum zirconium carbon sliding plate brick to form cao.sio2 and cao.sio2.al2o3 with low melting point. These low melts are washed away by molten steel, resulting in the rapid reduction of Al2O3 and SiO2 content on the surface of sliding plate brick, resulting in excessive corrosion of working surface of sliding plate brick , resulting in steel inclusion or breakout between sliding plate bricks. When the oxygen content in the molten steel is high, the carbon and graphite in the sliding plate will be oxidized to form a decarburization layer, which will increase the porosity and reduce the strength of the working face of the sliding plate brick , and aggravate the mechanical erosion and chemical erosion of the molten steel to the sliding plate brick. After tapping, the temperature of molten steel in the ladle is too high, and some heats are abov

  At present, there are two main measures to improve the bursting resistance of refractory castables , reasonable drying and heating system and application of explosion-proof additives. Due to the different production conditions in different kilns, it is difficult to formulate a unified and reasonable drying and heating system. Therefore, anti-explosion substances are often added to improve the anti-explosion performance of refractory castables . The new high-strength corrosion-resistant castable has excellent corrosion resistance and good thermal shock resistance, which makes it widely used in the lining of key parts of large kilns. In the production process, the structure, particle size distribution, material and additives were adjusted to improve its anti-cracking performance, but at the same time, some problems were brought, such as too fast setting speed, delayed hardening and instant loss of fluidity, which caused the refractory castable to burst from time to time

The continuous casting tundish was originally used for the heat preservation of molten steel, and its main purpose was to distribute and rectify molten steel. With the successful development of technologies such as slow cooling of molten steel, molten steel reheating technology, argon gas sealing technology, gas stirring technology and removal of non-metallic inclusions in molten steel, continuous casting tundish have become the most important part of the final stage of the steel smelting process. The main refining vessel is developing to a large scale. 1 Purification function To produce high-purity clean steel, install porous air-permeable bricks at the bottom of the tundish or embed porous tubular gas distributors between the working layer and permanent layer, or install porous bricks on the slag retaining wall to blow argon to make argon bubbles. Float evenly from the bottom to promote the removal of inclusions. These devices can eliminate the hydrogenation o

  Several typical refractory materials used in hazardous waste disposal rotary kilns are chromium zirconium corundum 50 bricks, chromium zirconium corundum 30 bricks, chromium corundum bricks, high alumina bricks , corundum mullite bricks and aluminum chromium silicon carbide bricks at 1100 and 1300 ℃ respectively. Anti-corrosion performance of slag. The results showed that: 1. After the corrosion test at 1100℃, the 6 groups of samples all showed good corrosion resistance and anti-permeability performance, and a large amount of slag remained in the crucible after the test. 2. After the corrosion test at 1300 ℃, the slag erosion and penetration behavior of the 6 groups of samples were significantly increased. The chromium zirconium corundum 50 brick still maintains excellent corrosion resistance, but the slag penetration phenomenon occurs; the chromium zirconium corundum 30 brick and the chromium corundum brick are slightly corroded, and the degree of