Refractory Bricks raw materialsThe process of making firebrick is divided into the selection of raw materials, calcination, shaping, crushing, batching, mixing, placing materials, molding, drying, burning, evaluation and packaging.
Refractory Bricks raw materials introduction
In addition, the price of firebrick and the price of raw materials, physical and chemical index and production method are determined quickly in the stages of brick baking.
Selection of raw materials, optimization and purification, raw materials with high purity is a prelude to the production of high quality refractories.
Here we will explain the method of brick production in simple language.
Minerals with high aluminum oxide content, such as bauxite, diaspore and kyanite, sources of silica, including sand and quartzite, magnesium minerals, magnesite, dolomite, forsterite and olivine, chromite, chromium oxide solid solution with aluminum, iron and magnesium oxides, Carbon in the form of graphite or coke and vermiculite mica are partial raw materials of zirconia, zircon, thoria, beryllia, titania, and ceria and other minerals containing rare earth elements that are used in the stages of making refractory bricks.
Refractory Bricks raw materials features
Refractory bricks will consist of dry pressing, hard mud, soft mud casting and hot pressing processes used in making building bricks.
Some materials, including magnesite and dolomite, require firing in rotary kilns to allow sintering and densification before the crushed and sized material is formed into refractory shapes and refired.
The raw materials are melted in an electric furnace and then the melt is poured into special molds during the brick baking process.
Firebrick production Natural minerals in the production of firebricks usually include lean ore and rich ore with uneven composition and high quality changes, sometimes the direct use of refractories will cause problems and poor quality, and it can't even be used, so Processing, beneficiation and classification of minerals is essential.
Except for some raw materials, most of them used as refractory aggregates must be calcined at high temperatures.
Refractory Bricks raw materials advantages
A series of physical and chemical reactions occur when the raw material is calcined, which plays a vital role in strengthening the composition, increasing the mineral composition and structure of refractories, and ensuring the stability of the refractory volume and the accuracy of the apparent size in the stages of making refractory brick Material curing indicators include apparent porosity, apparent density, and water absorption, etc.
In the stages of brick baking, sorting, crushing and proportioning, the raw materials must be sieved after crushing and grinding, because the semi-finished materials are graded with different powder sizes, and it is ensured to receive a dense body with very compact materials.
Each type of equipment can produce different fineness of final powder by grinding, 80 mesh - 425 mesh, 500 mesh - 2000 mesh, while the best can achieve about 2500 mesh.
In this part of the steps of making refractory bricks, mixing, placing materials, in order to homogenize the components and particles of raw flour and clinker, mixing and adding binder at the same time is necessary to improve the bond strength of semi-finished materials.
In making firebricks, they are designed to withstand high heat and cold at different temperatures.
They are made from fire clay, which primarily contains alumina and silica, in the process of making firebricks.
These are two elements that can withstand high temperatures and are suitable for fire pits.
how to make your own refractory bricks
For many, the approach of winter means spending time with family, snuggling around a warm outdoor fire.
Fire pits are becoming a popular outdoor fixture for new homes.
The best part is that you can make bricks and fire pits with a little skill and tools.
To make refractory bricks, you mix refractory cement and pack as much as possible into the brick mold.
Shake the mold to release air bubbles, cover with a plastic sheet and glue to secure.
After two days, remove the plastic and allow the cement to dry for another two days before releasing the bricks.
Refractory bricks are bricks that are designed to withstand high heat and cold at different temperatures.
Fire bricks are made from fire clay, which primarily contains alumina and silica.
These are two elements that can withstand high temperatures and are suitable for fire pits.
