wanhaorefractory

Private steel enterprises' profits in the first three quarters rose by 130%. Steel mills still have the urge to expand production. On November 3, the latest data showed that in the first three quarters of this year, 160 private steel enterprises included in the statistics of the All-China Metallurgical Chamber of Commerce achieved a total sales volume of 1.92 trillion yuan, a year-on-year increase of 12%; net profit reached 168.3 billion yuan, a year-on-year increase of 130%. In addition, the asset-liability ratio was 61.33%, 8% year-on-year down. The release of steel output during the heating season will be reduced this winter, and the supply will not exceed demand, which will help the steel market to run smoothly. For the time being, the positive impact of environmentally-friendly production is greater than the negative impact. Wanhao is a manufacturer who is specialized in designing various kinds of furnace and making refractory product...

During the use of magnesium-calcium bricks , the working end is cracked and peeled off due to changes in furnace temperature and slag penetration. Therefore, improving the spalling resistance of magnesium-calcium bricks is also one of the main ways to increase the service life of magnesium-silica brick linings. The pores in the magnesia calcium bricks can buffer the thermal stress in the magnesia-calcium bricks, prevent cracks from being generated and further expand, and help to improve the heat-stripping performance of the magnesia-calcium bricks . However, the pores in the magnesia-calcium bricks make it easier for the slag to infiltrate into the interior of the brick, forming a thicker deteriorating layer, and accelerating the structural peeling of the magnesia-calcium brick . Therefore, in practical applications, comprehensive consideration should be given to various factors to determine the porosity of magnesium-calcium bricks. In the production of magnesium-ca...

A sudden event can cause molten steel concrete in induction furnace, here are the things that should be kept in mind for remelting. 1.If the induction can not be restart in a short time, 3-5 steel tubes(diameter around 20mm) should be inserted in to the molten steel to ensure gas emmission during remelting. 2.Lean the induction furnace by 15 degree before the top concrete is melted. 3.Power should not be increased until the concrete is softened. If the temperature rises too fast, the expansion of metal exceeds which of lining material, lining material could be broken, induction furnace could be penetrated. After the concrete is softened, power can be rised to that of heat preservation till the surface of concrete is penetrated by the lower level molten steel, then set level of the induction furnace and start melting with normal power. Wanhao is a manufacturer who is specialized in designing various kinds of furnace...

Refractory castable construction requirements: 1. Winter construction refers to the ambient temperature at +5 ℃ ~ -5 ℃ when the construction. The temperature below -5 ℃ when only the adoption of a reliable anti-cold measures after the construction of gas. 2. Winter construction must refer to winter construction skills initiatives. To do a good job on the work environment of the block, the wind, heating and warm work, to keep the masonry after the temperature of +5 ℃. 3. During the winter construction of castable material, the dry material should be stored in the heating room, and with water spices, mixing material temperature maintained at 10 ℃ or more. Loss of additional chemical accelerator or antifreeze. 4. Winter in the furnace construction, the first insulation layer should be good to mobilize the refractory layer of anti-freeze ability. After construction, masonry covered with plastic sheeting, and then covered with dried vegetables. On the new puzzle kiln, the ...

1.High bulk density and high melting point. Proper sintering between granules under high temperature, but the sintering layer should be thin. High bulk density and proper sintering could keep nozzle filling compound from being scattered and floating into molten steel. 2.Good high temperature chemical stability, no chemical reaction with ladle nozzle , good corrosion resistance and non-wettability to molten steel and slag. 3.Proper granularity. If the granules are too big, molten steel could penetrate into the gaps between them, if too small, the granules could be integrated under high temperature. 4.Natural repose angle should be as small as possible, surface of granules should be smooth and evasive to create good fluidity, which could prevent arching inside the nozzle. 5.Moisture content should be less than 0.5%. Article Source:  The properties requirements on nozzle filling compound Company name: Wanhao Refractory Email: sales100@wanhaorefractory.c...

Domestic magnesite prices soaring, foreign markets are also affected. Originally relatively stable European market prices are rising higher and higher nearly six months because of the shortage of supply of Chinese magnesia. As researched, The current European market fused magnesia FOB prices rose to 700-960 US dollars / ton from the beginning of the 500-680 US dollars / ton, rarely over 40%. US market fused magnesia prices have also risen, but the increase is not about 10%. FOB US prices from the beginning of the 900-1400 US dollars / ton float to 1000-1500 US dollars / ton. 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. Wanhao has a staff scale of 410 people including 63 engineers as well as 180 sets of production and test devices, and also Wanhao has an annual output of 160,000 tons of refractory products . Wan...

Application area: Between tundish and crystallizer; Application method: CCM worker use the tools for hooking slags to evenly push the casting powder into crystallizer; Quantity: Normally it is 30-35 kg per ton of molten steel (Square Billet); Attention: The feeding of casting powder should be frequent and with small quantity, casting mold powder should be evenly distributed in crystallizer. Make sure the slag surface(except the middle tapping spot) is black, can’t be red or shiny. Luoyang Wanhao New Material Co., Ltd. is situated 10 kilometers south of Luoyang which is an ancient city of thirteen dynasties. Luoyang is of rich refractory raw materials and convenient transportation which contribute a lot to Wanhao’s production and development. Wanhao has a staff scale of 410 people including 63 engineers as well as 180 sets of production and test devices, and also Wanhao has an annual output of 160,000 tons of refractory products . Wanhao is a manufacturer who is...

First, refractory production continued to decline. The refractory production in 2016 continued the downward trend in 2015, a decrease of 8.56%. The main reason for the decline in refractory production is the rapid and drastic reduction in the market demand for refractory materials for infrastructure projects.  From the output of different refractory products, silicon brick production decreased the most, as high as 37.59%; high alumina products and clay products were down more than 10%. Second, the export trade situation is grim. In 2016, the total export volume of refractory raw materials and products fell to its lowest level in the past five years, only 2.565 billion USD, down 11.62%, and a decrease of 765 million USD from the 3.33 billion USD, the highest point in 2014, down 22.97%. Third, the imports of refractory raw materials have increased. In 2016, the total imports amount of refractory raw materials and products is 324,900 tons, an incre...

Choose the right firebrick is very important, first of all, we need to know what is firebrick and the parameters and dimensions of refractory brick. Usually refractory can be divided into three mail categories. First, ordinary type, also the most widely used type. The main difference of it lies in the shape that it has no concave corners. Second, another type is special shape refractory which is a new type of firebricks widely used in recent years. The weight of such kind brick is about 16kg and it has three concave corners approximately. It is an ideal choice for furnace construction and is also chosen by most people. Besides, special shape firebrick has three more grooves than ordinary type refractory. Third, this is a standard type firebrick. It is usually used for common furnace construction. If there are no other special requirements for brick bond, it’s better to use standard firebrick. For choosing refractories , we can not only select...