Different boiler need different refractories

we have known using of refractory material boiler knowledge, but the boiler in different request of refractory materials are not the same, today let technicalpersonnel Yilong to tell you different boiler need what refractories.

Boiler generally the most commonly usedrefractories are power generation boiler and boiler. Power boiler refractory material, according to its component is different, different temperature, so the choice of refractory materials to match. So power refractory boiler used mainly for unshaped refractory lining. Refractory material general should be placed in the burner and burner and other parts, but due to the existence of the temperature is too high, recommended to choose high alumina or refractory clay; on the other hand is the ordinary boiler refractory material, the common boiler is composed of furnace tube system and combustion chamber and other parts, the existing working pressure is not high, but also need to withstand high temperature, so we choose the clay brick level inside, the rest three level brick. So boiler using different refractory brick is also different, we must choose the refractory brick for the boiler according to the nature of the boiler.

The content of the boiler, for the different selection of refractory material requirements of knowledge you have some understanding of it, if you want to know more about the refractory material knowledge can consult us freely.

Selection and using of refractory brick

We all know that in the refractory brick selection time not only to understand the specifications, but also to understand its use in those aspects, at the same time should understand how to buy after inspection, this knowledge is much novice distress, today let technical personnel Yilong to tell you.

Refractory brick of species, which is mainly used to refractory clay and other made of refractory materials, color is light yellow and the pale brown, is mainly used for masonry smelting furnace, high temperature resistant, so called firebrick. When we want to know the specification is very much on the choice, we want to compare and make a decision, there is the specification must be consistent with the provisions of the state and the relevant departments, but also to carry out inspection, must not be careless when we want to have a look Is it right? Acceptance and our initial order the same, but also randomly selected several blocks out have a look, to avoid damage.

And we all know that there are many kinds of refractory brick,according to the different nature of each species, can be used in many related industries. The most commonly used industry is steel series, series, rotary kiln stove series, in the steel industry using refractory brick is to prevent the furnace or eruption out to cause some damage, so to use in the fire mouth, block the fire out; refractory brick in rotary kiln is used in lining of use inside, the protection of the kiln body safety; hot blast stove series is in refining device, pre buried iron etc. mainly using refractory brick.

The content of the refractory brick, for the knowledge you have some understanding of it, if you want to learn more about refractory brick can always consult us.  http://www.chinafirebrick.com

Refractory castable antacid effect

Acid castable antacid effect has this condition is necessary, but a people that new into castable industry will tangle what is acid castable antacid effect, today let Luoyang Yilong technician tell your knowledge about acid castable acid resistance on this issue.

Castable acid erosion resistant to acidic waste, is castable greatest protection, but what is called acid castable antacid effect is because of the existence of castable surface pores more, but will be lower porosity and high temperature mechanical properties other castable it will be much higher compared; acid castable and construction in the use of time, as long as they meet a large range of acidic waste can be a good resistance, and when the casting material which adds a certain amount of bulking agent when it will not affect the acid resistance castable acid, while ensuring overall castable is not compromised, but the overall acidic waste will not be reduced, so the acid castable antacid effect in the construction time can be more well reflected.

Comprehensive above, knowledge of what is acid resistant castable antacid effect you have understand, if you want to know more about castable knowledge can contact us.

Refractory castable pan plasma phenomena and preventive measures

Floating pulp is soft layer material in refractory castable surface float bleeding caused by cement. Pan-refractory castable refractory slurry refers to the construction process, due to vibration or ramming, and in refractory castable surface layer of light float dilute slurry phenomenon.

Refractory castable watering to condensation period, due to urinary has caused the phenomenon of floating pulp. Bleeding refers to solid particle sinking, the water rose, refractory castable settlement shrinkage, and the surface of the phenomenon of water. The main reason of castable refractory bleeding is due to aggregate sinking phenomenon caused by. A small amount of bleeding can also prevent the refractory castable surface drying too fast, convenient for surface finishing. A lot of Pan pulp is bad, a lot of Pan pulp will produce a large number of readily peeling “powder”, some rising water will be gathered in aggregate below, after hardening become void, appear weak adhesive tape, reduces the bending strength of castable refractory. In the template and interface, bleeding when the cement slurry away, leaving only the aggregate, appear “grit” phenomenon, the strength decrease.

The primary ways to prevent excessive bleeding is to prevent excessive bleeding, the water reducing agent, air entraining agent to reduce the castable amount per unit volume of water, is the effective measures to improve the properties of castable refractory bleeding. The performance of cement, the material also has effect on the bleeding. Improve the fineness of cement, mixed with some fine admixture or ultrafine powder, can reduce bleeding refractory castable.

Gravity castable refractory and its advantages

For refractory castable, lightweight refractory castable may we all already know, we know that is a castable refractory material joined by a certain amount of granular and powdered materials made ​​binders.So gravity refractory castable, we know how much of it, below by Yilong Refractories Co. professionals to introduce what is gravity casting material, and what are the advantages and other issues

Gravity casting material is a no vibration to flow and degassing castable  refractories. Its characteristics are not reduced or are not significantly reduce the performance of castable under conditions appropriate to add water; no vibration can be cast into a variety of shapes of construction thereof. Gravity casting material for thin-walled or complex shapes can not use vibration molding casting parts.

Gravity castable and vibration castable compared with the following advantages:

1. Lightweight refractory castable can flow under its own weight without vibration.
2. Lightweight refractory castable can automatically spread out and reach vibration castable unable to reach the site.
3. Pumpable lightweight castable refractory construction, reduce labor intensity, speed up the construction cycle.
4. Lightweight refractory castable reduce construction noise pollution.

High aluminum bricks’ making temperature and heat preservation time

Friends who select alumina bricks clearly know how much temperature you need to control when producing alumina bricks? How long the insulation ​​in the future you know? Today let Luoyang Yilong Refractory technician to tell you knowledge of alumina bricks that making temperature and holding time.

1. Alumina bricks are divided into one, two, three grade, and ​​the normal temperature is about 1440 degrees Celsius, holding time can reach 40 hours
2. Making time for high aluminum brick three, temperature should be controlled at 1400 degrees Celsius; the holding time in this case can reach a maximum of 32 hours.
3. And when the tunnel kiln firing high alumina brick, the temperature must be at 1550 degrees, so that the holding time can be in 24 hours or 48 hours.

And according to the temperature and different raw material with high aluminum bricks, baking temperature 600 degrees Celsius is the lowest temperature as the boundary, then in the firing process a little with increasing temperature, and fired refractory brick the required temperature so far.

The content of the temperature and heat preservation time, high alumina brick is how much knowledge you have some understanding of it, if you want more information about high aluminum brick knowledge can consult us.