Intermediate frequency furnace ramming material

Intermediate frequency furnace ramming material has many kinds of way, sometimes called dry ramming material vibration of intermediate frequency furnace and medium frequency furnace lining materials, also known as intermediate frequency furnace refractorymaterial, intermediate frequency furnace, it in fact many properties are the same. Ramming material according to their chemical properties can be divided into acidic ramming ramming, neutral, alkaline ramming of intermediate frequency furnace. Tianjin intermediate frequency furnace ramming material and chemical properties of different decision it contains raw materials of different. Ramming material is the main raw material with high purity quartz, fused silica based ramming acidic medium frequency furnace, sintering agent during the composite to composite additive as the main material; and for neutral knotting material is selected to alumina, high alumina material as the main rawmaterial, the neutral knotting material sintering agent in composite additive for sintering agent for alkaline; knotting materials and
their different uses high purity fused corundum, high purity fused magnesia, high purity spinel as main raw materials, with the composite additive for sintering agent. Tianjin intermediate frequency furnace ramming material whether choice even in acidic or alkaline, neutral, to varying degrees have been widely applied to intermediate frequency coreless furnace, core induction furnace. Tianjin intermediate frequency furnace ramming material used for melting of cast iron, ductile iron, forging cast iron, vermicular cast iron and cast iron alloy, carbon steel, alloy steel, the melting of high manganese steel, tool steel, heat-resistant steel, stainless steel, aluminum and its alloy melting, melting of copper, brass, copper nickel alloy and bronze copper alloy etc.. Ramming material refers to the use of ramming (human or machine) method of
construction, and hardened in the heating effect of higher than normal temperatures unshapedrefractory.

IF furnace ramming using errors

Xinmi Changxin Refractory help you interpret frequency furnace ramming material errors, IF furnace ramming many people use when there are errors. For instance, some customers think IF furnace ramming such as quartz sand fight the charge should be done with white quartz sandlike material, there are considered to be more detailed the better, some say as long as the powder not others. These are the right frequency furnace ramming caused understand. Followed by some because of the fines that the furnace is good, it has been the use of fine material, but do not want to use a relatively coarse material. This is a misunderstanding.

Currently, the quartz sand in the end in what material is good? Changxin IF furnace ramming learned the most important need to look at several factors, one is the silicon content, which is the silica content, the higher the better refractoriness another, why are a lot of old customers are willing to adopt the red quartz sand it? Because red quartz sand high refractoriness, there is in addition to iron, at the time of entering into the mechanical quartziron easily processed, so the production of intermediate frequency furnace ramming sure when iron, or likely to cause wear oven phenomenon. As the ratio of quartz sand grains, the more detailed the better or the thicker the better. This should be a concrete analysis of specific issues. Also a ton of furnace, the thickness of the particle can be, as long as can be with a reasonable proportion. The main problem is a habit. As the saying goes: one-third of seven material use.

Whether even the best materials, if you hit a bad stove ovens, furnaces used in the same age is not high. Therefore, we use the time, Changxin IF furnace ramming what you suitable manufacturers, welcome to come to counseling. “http://www.yilongrefractory.com”

The selection of castable should focus on products cost-effective

Now with some heating furnace and increase the number of metallurgical equipment, peopleneed to use in the production process to Tianjin castable such products, which mainly showed granular or powder, widely used in these devices, its mobility is very good. With the improvement of the production technology, superior in quality is more and more secure. In this case, the use of materials with refractory properties in this continuously under a wide range of conditions, how to improve the product purchase need to pay attention to the price is a lot of problems in the process of industrial production, to improve our use of demand.

First of all, the better quality products, must be able to fully guarantee the products we need quality, has good fireproof effect, make our product has very good practical value. We choose
this kind of Tianjin casting material production enterprises need to be very careful, because of the particularity of this kind of  refractories in the composition and use, need to use of the technology is still relatively high, a little mistake may cause problems on the use, especially this kind of product in the production, storage, if not able to pay great attention to the process of transportation and use, it may cause some security hidden danger, the development of the entire production process is negative. So the quality should be put in the first.

Second, product price is very reasonable. At present has the ability to produce this kind of Tianjin casting material manufacturers are also a part of, according to the manufacturers and some of its usage, we can measure how well each manufacturer’s product price and we need to pay the prices in this process, also includes transportation costs, by contrast, choose to create a higher performance price ratio.

Refractories for iron and steel furnace

Since the 21 century, the production line of the rapidly expanding, together with changes in coal quality, as well as the influence of environmental protection and a series of conditions, some large and medium-sized pre collapse kiln during the production process, especially the basicrefractories by different degree of damage, affecting the steel furnace operation cycle, has become an important condition control steel kiln operation rate.

Now, heavy pre collapse kiln (Nissan and over 5000 tons of furnace) basicrefractory material used, its important commodities magnesia spinel brick, magnesia chrome brick, dolomite brick and magnesia zirconia brick series, while the domestic mainly magnesia spinel brick and magnesia chrome brick.

1. magnesia spinel brick

Magnesium spinel refractory brick common is the use of pre spinel and combined magnesium material synthesized by mixing, forming and firing is made, another way is to add compound aluminum in magnesium compound, during sintering synthesis of spinel. The greater use of the market is made first modes of spinel brick; the brick has good thermal shock stability, thermal chemical corrosion of high ability, important for transition zone.

2. magnesia chrome brick

Direct the conclusion of magnesia chrome brick has high temperature resistant performance good, SiO2 corrosion resistance and anti chemical reduction effectiveness. High intensity and have high and anti stress ability of the machine, coating with good performance, many used in the sintering zone.

3. magnesium dolomite brick

Magnesium dolomite brick is the raw material through organic concluded agent forming and firing. Magnesium dolomite brick has the following advantages: with the chemical stability and the gas of iron and steel clinker; high refractoriness; easy to hang and kiln crust; the price is cheaper. So, in foreign magnesium dolomite brick with more, but it is more easily liquefied.

4. magnesia zirconia brick

Magnesia zirconia brick has good using prospect, but because of the high cost, the spread was limited.

Acid proof brick gun refining narrowing and sintering

Volume reduction is a key characteristic of acid resistant brick gun mixing change, reducing the volume of the size of the value, not the same in different temperature range. The majority ofacid resistant refractory brick gun tried to narrow temperature at 600~650 deg. C.

Along with physical – and acid resistant brick gun refining process of chemical change, true proportional acid proof brick have changed. 400~650 reduced the temperature range from 950 DEG C, liquid phase, followed by the occurrence of the generation and growth of mullite crystals, Mo, true proportional value unceasingly to rise, at the temperature of 1350~1400 DEG C during, true proportional tends to be stable, then the acid resistant brick has presented considerable dense static. The true proportion of acid resistant brick clinker general should not be less than 2.70.

Quality and acid resistant brick acid resistant  refractory brick clinker sintering closely. Animportant symbol of acid resistant brick sintering is composed of dense block, porosity outstanding outstanding decline, color changes, and has shown a glass colored luster. The sintering mechanism of acid resistant brick is important to liquid phase sintering process, the sintering function is so important to occur at high temperature liquid phase with the number of attributes, namely in the number flux magazine containing acid proof brick in the variety, and Al2O3/SiO2 ratio, sintering temperature and sintering. The range is a critical property of acid proof brick, acid content in general journal brick is less, the sintering temperature is higher, and the narrower the sintering range. Degree of sintering brick acid through conventional water absorption or bulk density said, ordinary water absorption rate is less than <5 font="">

Application of epoxy mortar used in blast furnace.

Blast furnace used in treatment of iron mud gun port, through the usual is a water gun mud, but in the steel yield is high, the epoxy mortar are more susceptible to iron slag machineerosion and chemical corrosion, resulting in a blast furnace slag not net, not only affect the blast furnace high yield smooth, also easy to send the world iron process of iron mouth off, resulting in iron mouth running large flow caused by accident. At the same time, because of the iron export surge, prone to iron mouth call “bazooka” accidents such as scald people.

Ingredients important producing anhydrous stemming ratio (%): brown alumina brick 15-24, SiC 6-15, black 20, white mud 12-16, tar, 18-20. The gun mud pressure intensity 20Mpa, easy to speak in the blast furnace mouth machine openings and anti erosion function better.

An important component of white mud amount is too large, will reduce the excessive mud gun, which occurred after hours, crack, impact stemming humanity, in stemming the adding amount of 12% basically, gradually increase the volume, current after firing line changes to +0.3%, the best performance, the plasticity is high, a steel at high temperature have a good micro expansion, no crack, no effective away by expansion, with iron, iron flow channeling cracks donot bring into stocks and with spray, burning out the serious crisis of cooling wall.

An important component of low, medium temperature sintering agent amount, will have the influence to the stability of iron, sintering agent was added to make the gun mud formation of low melting material under high temperature, thereby stemming corrosion resistance variation, when tapping a splash phenomenon. Find the ratio of 2.5%, treatment of iron mouth, than water stemming save 25min time, and does not affect the iron groove processing, iron, iron flow stability.

The above anhydrous stemming in domestic steel reference 1, No. 2 blast furnace, a water gun mud compared with the same period, the following skills: blast furnace iron mouth indicators pass rate rose 2%, iron punctuality rate rose 6.6%, iron content difference pass rate rose 8%, iron mouth iron wind reduction rate decreased 96%, every day can increase your iron blast furnace operation, safety parameters have also been mobilized. The development and application of anhydrous stemming is very successful, dedication to strengthen property high made of blast furnace.

High strength low cement castable

[purpose] heating furnace; furnace flame environment such as rolling heating soaking pit wall, top, bottom, pipe, burner cast or prefabricated, industrial boiler body; chemical equipment such as ammonia, a two conversion furnace lining casting;

[Characteristics]

high refractoriness — low cement castable content more than 1650-1800 DEG C, refractoriness, high temperature performance;

Intensity high — temperature, high temperature strength, anti erosion, anti stripping;

Anti erosion — at high temperature for various kinds of steel slag has strong resistance to erosion ability;

[Usage]

According to the proportion of water, stir into a mortar machine, vibration molding.

[Storage]

25kg/ bag sealed package at room temperature for 3 months.