How Many Varieties are there in Alumina Silica Fire Bricks?

High alumina refractory brick, an aluminum silicate refractory material having an alumina content of 48% or more. It is formed by bauxite or other raw materials with higher alumina content. High thermal stability, refractoriness above 1770 . Good slag resistance.

Alumina Silica Fire Brick For Sale
Alumina Silica Fire Brick For Sale


Usually divided into three categories:
I, etc.: Al2O3 content ≥ 75%;
II, etc.: Al2O3 content 60%~75%;
III, etc.: Al2O3 content is 48%~60%; can also be classified according to its mineral composition, generally divided into: low mullite (silica), mullite, mullite – corundum, corundum – mullite and corundum.

Corundum Brick
Corundum Brick

One of the important working properties of high alumina refractory bricks is the structural strength at high temperatures, which is usually assessed by the load softening temperature. The high temperature creep is also measured to reflect its high temperature structural strength. The test results show that the load softening temperature increases with the increase of Al2O3 content.

For high alumina refractory bricks with an Al2O3 content of less than 70%, the load softening temperature depends on the proportion of the mullite crystal phase and the liquid phase, which increases with the increase in the amount of mullite. The amount and nature of the liquid phase have a significant effect on the load softening temperature. Therefore, reducing the content of impurities in the raw material is advantageous for improving the load softening temperature and high temperature creep.

High Alumina Brick
High Alumina Brick

Production Process

The production methods of high alumina refractory bricks and clay bricks are basically the same. Only some process parameters are different. There are also processes such as pulverization, kneading, molding, drying, firing, inspection, and packaging. The compressive stress is better at low temperatures but slightly lower at high temperatures, so the stacking in the kiln is less than 1 meter.

The production process of high alumina refractory bricks and multi-crop clay bricks is similar in that the proportion of clinker in the batching is as high as 90% to 9%. The clinker needs to be sorted and sieved before crushing. For example, high-alumina refractory bricks such as I and II are fired in tunnel kiln at 1500 to 1600 .

Fireclay Brick
Fireclay Brick

The production practice proves that the high-aluminum clinker is strictly sorted and graded before being crushed, and the grading storage adopts the bauxite clinker and the combined fine grinding method of the clay to improve the quality of the high-alumina refractory brick.

Species separation, based on chemical properties
A sign of this classification is the composition of the refractory stone, the substances involved. There are 3 categories:

•acidic group. This includes dinas and quartz-clay stones, which are able to interact with an acidic medium without any damage.
•The main group consists of dolomite, magnesite, chromomagnesite. For them, contact with alkaline medium will be problem-free. Most often they are used for the erection of structures, in which there are constant sharp changes in temperature.
•Neutral group is represented by chamotte fireproof, carbon and graphite stone materials. They are characterized by resistance to alkaline and acidic environments.

Semi silica Brick
Semi silica Brick

Among a number of positive properties, we distinguish the main:

•comparatively low weight.
•Ability to withstand temperatures up to 1690 C inclusive.
•Good heat capacity and inertia, manifested in rapid heating and slow cooling.
•Variations in shape and size.
•Excellent cope with temperature changes.
•It withstands the influence of aggressive external factors.
•Attractiveness of appearance and satisfaction of any requests due to different shades and textures.


The Benefits Of Purchasing An Egg Tray Machine

Eggs are a dietary staple throughout much of the world. Along with being eaten on their own, they are also used to create a variety of other foods. For instance, they are an essential ingredient in many types of bread, cake, and other baked goods. Eggs can be stored by paper egg trays which are manufactured by rotary egg tray machine.

egg tray machine
egg tray machine

If you visit any grocery store, you most likely will find a well-stocked section filled with a variety of different eggs. These eggs are usually stored inside of recycled paper cartons. There are also usually larger quantities of eggs available in bulk. These eggs are typically sold in square or rectangular paper trays that have indentations that are perfectly sized for holding individual eggs. We are the professional one of pulp moulding machine suppliers.

The trays help protect the eggs from breaking while they are being transported and stored. Without the trays, the eggs could easily bump into one another, getting cracked or broken in the process. Thanks to the design of the trays, however, the eggs never touch one another, minimizing this risk.

The paper pulp that is used to make the trays also helps absorb shock during the transportation process. Again, this reduces the likelihood that the eggs will become broken before they arrive at the store. The automatic egg tray machine in Philippines can make 3000-5000pcs egg trays per hour.

Egg trays are made using a special type of machine. These machines transform wet paper pulp into beautifully shaped paper egg trays. There are a lot of benefits associated with investing in an egg tray machine.

For one thing, these machines are relatively affordable to purchase when compared to other types of manufacturing equipment. Even if you are just getting started and don’t have a significant amount of money to invest, you can most likely still afford a small egg tray making machine(

Making egg trays is extremely affordable. The trays are made from recycled materials that can be gathered for free. That means that you don’t have to spend money on raw materials, making this an extremely cost-effective product to manufacture. All that you need is a steady supply of recyclable paper, which can be found in abundance for free.

Because egg trays are made from recycled materials, they are also good for the environment. Best of all, after people are done using them, they can recycle them again, meaning that they don’t generate any extra waste. Again, that makes them some of the best products out there from an environmental standpoint.

Finally, egg tray making machines are easy to operate. You don’t need to provide extensive training before someone can use the machine. Instead, because the process is relatively intuitive, people can quickly learn how to make the trays, minimizing the amount of time, money, and effort that you have to put into training. Go to this page:

Purchasing an egg tray machine provides many benefits. If you are looking for an affordable, cost-effective business idea, investing a little bit of money in one of these machines is an excellent option. After purchasing the machine, you can quickly get up and running with your new business. Best of all, because eggs are so popular, you shouldn’t have any trouble finding customers to buy your paper trays after they are finished.

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