The method applies to prolong the life of ladle refractory castable in our country

Extended service life, can save money and bring benefits. Since the conditions of use of extremely harsh refining ladle slag line site and cause serious erosion of the containment wall parts ahead of

refractory castable become so damaged the main reason for its life. Quality of life of refractory castable ladle also plays a decisive role.

Ladle castable ladle development to improve life, to overcome the shortcomings of the brick type play a good effect. The current development has a water glass ladle castable

combination of aluminum and magnesium, aluminum - spinel castable, but with the development of the outer casting and refining technology, the former has been unable to meet the current development of many steel smelting technology needs.

In industrialized countries, the popular use of aluminum - spinel castable. Although this material long life, but at the tabular alumina, alumina and industrial grade synthetic magnesia spinel, alumina cement and other raw materials, the price is expensive. Most of our current domestic economic strength of steel without the use of expensive high-end ladle castable, however, China has abundant bauxite resources and using both synthetic alumina spinel raw materials, these materials are developed ladle castable suitable for China.

Tube furnace hearth repair methods

Tube furnace lining around the city were damaged in different places at different damage repair methods, in order to extend the life of the furnace lining and prevent damage caused by accident lining repair parts and methods are as follows:

Refractory furnace wall seams and cracks or damage repair: available Indefinite push play refractory repair,

repair large range of use charcoal drying.

Furnace wall repair methods ：Tube furnace furnace repair methods sidewall damage or a small range of erosion: Clear slag, the residue of iron coated with sodium silicate. Then add 5% -6% sodium silicate refractories beat mixed patches, irregular refractory repair. Tube furnace when the furnace wall eroded slightly larger range, then put the patch.

Furnace bottom repair method：The bottom of the tube furnace, the inclined portion of the side wall of burning or damage repair method: Patch is available at the bottom of the furnace and new brickwork adding the same amount of boric acid and mixed uniformly fixed tube furnace refractories.

How to produce high quality castings

To produce high quality castings, first need to study the factors affecting the performance of cast iron, which is how to improve the purity of molten iron smelting: How to get good graphite morphology;

chemical composition fluctuation range control study to solve the problem of technical control parameters and to study what the purpose of melting method.

Hot metal purity control:

1. Oxide-oxide inclusions generated by burning;
2. Melting of the oxygen produced by melting holes;
3. The sulfur content of the control to prevent the generation of sulfur co-crystal;
4. Phosphorus content control to prevent phosphorus eutectic generation;
5. Limit the amount of trace elements in less interference.

Molten iron smelting process control:

1. Molten iron oxidation control:
2. Eliminate hereditary graphite, graphite good shape;
3. Control of chemical composition fluctuation range, accurate chemical composition;
4. Molten iron smelting temperature control;
5. Select the appropriate device and method for melting the best system.

How to choose the refractories

How to choose the refractories

Refractory varied, variety, when we should try to buy when the refractory choose the most suitable, and often the most appropriate

Is not necessarily the most expensive, but also can save us from a fee.

1.       According to high-temperature kilns required refractoriness to buy: refractoriness of 1580-1770 degrees refractory to ordinary election,

the degree of refractoriness need 1770-2000 election advanced refractory, refractoriness above 2000 degrees you need Select grade refractories.

2.       According to the chemical properties of high-temperature furnace to buy: There are three general, acidic refractories, neutral refractories, basic refractories, be sure to select the corresponding chemical properties of refractories, otherwise chemical changes occur at high temperatures, causing serious losses.

3.       According Uses Optional: Different different industries have need of refractories, refractory different position with different refractories, refractory steel with steel industry; non-ferrous metallurgical industry refractories. Refractory Petrochemical petrochemical industries. Glass kiln, cement kilns, ceramic kiln with silicaterefractories; generating boiler power industry refractories; waste incineration with melting furnace refractories.

4.       According to pre-assemble the results to buy, under normal circumstances, we require manufacturers to provide pre-assemble refractory effect, which can calculate the required specifications and quantity of refractories. At the same time we must choose refractory samples provided by the manufacturer, so that by the time of delivery can be kind of receipt, to avoid shoddy version.

5.       Branding issues, and now thousands of refractories manufacturers, big and small. If you buy the special requirements and special purpose refractories can find a Sino-foreign brand manufacturers, or specifically to do this special refractories manufacturers, of course, the price will be more expensive than domestic brands about 20%. General Refractories can choose to domestic brands, while some of the information depends on the manufacturers,

for example, whether through the ISO certification, business licenses, etc., you can also look up the Internet, or to inquire about nearly brought down the industry in which manufacturers use refractories.

6.       Service. To select more recent service outlets factory, so if an exception occurs in the brickwork, the manufacturer's technical staff can quickly arrived at the scene to avoid further loss. There are warranty issues. Under normal circumstances, the first year you have any questions, manufacturers must free one-year warranty.

7.       When determining the purchase generally need to pay a deposit, if it is convenient to go to the manufacturers should look at the way manufacturers look at the size, strength, and to avoid being defrauded false deposit.

Refractories——Corundum

Corundum is one of the most important refractory raw materials, the use of corundum refractory products manufactured in aluminum MgO-C ladle, ladle prefabricated blocks, torpedo and other industries are widely used. Now, with the continuous development of high-temperature industrial technology, constantly upgrading equipment,

innovative theories, especially the application of new technologies in recent years, the metallurgical industry, more to promote the adjustment of product structure refractories, corundum in refractories use the proportion is growing.

In recent years, large and small manufacturers continue to rise corundum, production quality is uneven, use, corundum refractories produced in various industrial applications, there are various problems chalking bursting. The main problem is exposed high levels of impurities corundum, alumina content but related issues.

High impurity content of corundum,products will cave in there, it will affect the quality of subsequent products. The low alumina content intolerance can lead to corrosion of the products. Meanwhile corundum powder particles cause problems exposed cracks in the production of products, the bursting of the situation.

Corundum products because of non-compliance on the one hand a small production companies for lower prices deliberately low-quality goods, on the other hand there are the production and use of business-to-business product parameters sufficient reason Communication Department. Luoyang Yilong Refractory Co.Ltd help customers understand their requirements through the use of sales, specifications, parameters and other conditions, the concept of vague answer your technical staff is also actively through the exchange and technical visits with customers to fully understand customer intent determining product specific parameters. At the same strict quality control in the production process. Produced corundum product quality, stable performance. welcome to consult and order.

Refractories industry must keep pace with the times

This year my Refractory Factory (LuoyangYilong) circumstances, can determine the continuation of the current domestic refractories shipping price trend appeared, although the release of last year's major banks invariably loose interest, but also very difficult budget period a substantial profit. Restructuring of production and sales model, to enhance the industry credit, reduce transaction costs,

have become big businesses refractories, refractory materials prices continue to drop further at present, and slightly expanded, in the absence of sufficient growth in demand, the refractory plant continue to cut prices to sell .

The current situation is, wages rise refractory factory, is the rapid growth of the financial costs, the price index of refractory products continue downward. Also facing a more serious problem is the decline in profits, negative factors such as high-end equipment imported condescending is the most important factor in the refractory industry is facing difficulties. Imbalance between supply and demand, the industry must adjust the strategy, innovation, has become a trend, at this time, online marketing strategy has been quietly probe.

According to the actual circumstances of refractories, network marketing has become a trend, with the maturity of e-commerce models, online trading has become commonplace. E-commerce model system reform is not a cure-all prescription, guide enterprises in the public and individual agency reform, they should based on the principle of "seeking stability, and integrity," according to objective laws, integrity management, establish brand awareness, promote the transformation of the traditional model. Let refractories industry has to keep up with the development of the times. This is the trend, which is profitable. Internet marketing go this route, every industry needs and must be the way to go, just a matter of refractories industry is no exception.

Refractory for electric arc furnace lid

EAF uses A1203 65% -85% alumina brick masonry lid, the special needs of the site is also used tabular alumina brick (with a plate Al20390% -100%), but the price is expensive, silica brick is about 10 times higher 31V or thermal stress relief lid damaging effects of aluminum bricks, high alumina brick firing using phosphate bonded alumina bricks do not burn with white masonry made good use of effects. Some (HP) in high power electric furnace cover, the main use of high alumina bricks (about 80% Al2 03) and chemically bonded magnesia-chrome brick (Mg0> 65%, Cr2 037% _15%) Consolidated masonry furnace cover. High power (UHP) electric cover using mullite corundum brick, the brick main feature is a good thermal stability, resistance to high temperature load-deformation ability, it just to meet the requirements of the lid refractories, MK-80, No. MO corundum bricks,

is fused corundum and fused mullite particles strengthen the structure of products. 50t UHP EAF for cover, stainless steel and bearing steel smelting life increased by 25% -35% higher than magnesia-chrome brick roof.

High alumina brick lid. Alumina brick masonry furnace lid began in the late 1950s. At that time the use of high alumina brick lid (Ak 0365% -80%) increased by 4 times higher than silica brick lid life. Firing alumina bricks (A \ 2 03 80 16) and phosphate binding does not burn alumina brick (Al2 03 80% -85%) and mullite brick firing or not firing phosphate binding mullite brick, they have in common is an excellent thermal shock resistance. The life of the early 1960s, the lid has reached about 200 furnaces.