High-quality clay refractory brick is a refractory material widely used in the industrial field, with good high temperature resistance, anti-wear, anti-erosion and other properties. In industrial production, high-quality clay refractory bricks are mainly used for masonry high-temperature furnaces, heat treatment furnaces, steel smelting furnaces and other equipment. So, what color is a high-quality clay refractory brick?This article will introduce in detail the raw materials, production process, and color of clay refractory bricks.
First of all, let's learn about the raw materials of clay refractory bricks. The main raw material of clay refractory bricks is clay, which usually uses natural minerals such as kaolin, bentonite, and diatomaceous earth as raw materials. These raw materials are processed by selecting, crushing, grinding and other processes to form powdery substances with a certain particle size distribution. In addition, in order to improve the performance of clay refractory bricks, a certain amount of binders and additives needs to be added. The binder is usually water or cement, and the additives include mineralizers, stabilizers, antifungal agents, etc.
Next, let's take a look at the production process of clay refractory bricks. The production process of clay refractory bricks mainly includes forming, drying, firing and other steps. Molding is to mix clay raw materials with binders and additives evenly, and press them into bricks with a certain shape and size through molds. Drying is to place the molded bricks in a well-ventilated environment, so that their moisture gradually evaporates to achieve a certain strength and stability. Firing is to put the dried bricks into a high-temperature furnace, and after a certain period of high-temperature heating, the clay minerals in the bricks are sintered to form a hard ceramic body.
Finally, let's take a look at the color of clay refractory bricks. The color of clay refractory bricks mainly depends on its raw materials and production process. In terms of raw materials, clay minerals of different origins and types have different colors, such as white or light gray for kaolin, gray-green or yellow-brown for bentonite, and light yellow or dark brown for diatomaceous earth. In terms of production process, the firing temperature and holding time also have a certain influence on the color of clay refractory bricks. Generally speaking, the higher the firing temperature and the longer the holding time, the closer the color of the clay refractory bricks is to the natural color of the ceramic body, that is, white or light gray. However, in actual production, in order to improve the erosion resistance and wear resistance of clay refractory bricks, a certain amount of mineralizing agents and stabilizers are usually added during the firing process, and these additives will change the color of clay refractory bricks to a certain extent.
In conclusion, the color of high-quality clay refractory bricks mainly depends on their raw materials and production process. In terms of raw materials, different origins and types of clay minerals have different colors;In terms of production process, the firing temperature and holding time also have a certain influence on the color of clay refractory bricks. However, in actual production, in order to improve the performance of clay refractory bricks, a certain amount of mineralizers and stabilizers are usually added, and these additives will change the color of clay refractory bricks to a certain extent. Therefore, the color of high-quality clay refractory bricks is not single, but has a certain range of variations. When choosing high-quality clay refractory bricks, in addition to paying attention to their color, they should also comprehensively consider their performance, ** and other factors to ensure that they can choose the most suitable high-quality products for their needs.
Clay refractory brick is currently the customer's favorite refractory material, because of its low cost, wide application, and more durable, in the part that does not contact the flame or erosion, erosion, most of the clay refractory bricks can be used to save costs, quality products are preferred by customers, then, what is the color of clay refractory bricks?Today, collating about the color of clay bricks and related information, interested friends can learn about it together.
What are the types of clay bricks?
The alumina content of clay bricks is 30-48%, and the grades are: n-1, n-2a, n-2b, n-3a, n-3b, n-4, n-5, n-6, according to special uses: low creep clay, low porosity clay, high density clay, clay insulation bricks, etc., and there are also classified according to the industry kiln, which will not be introduced too much;According to the size and shape, it is divided into: standard bricks, ordinary bricks, special-shaped bricks and so on.
What color is the clay refractory brick?
The color of clay refractory bricks is generally light yellow and brownish yellow, sometimes even dark brown, and sometimes there are brown and black spots, dark brown indicates that the iron oxide content is very high, light yellow and yellow are relatively normal colors. The color alone cannot completely judge the quality of clay bricks.
Brown and dark brown clay bricks, although it indicates that the refractory is low, but the light color does not mean that the refractory of clay bricks must be high, and there are many white impurities in Tianwei clay bricks, such as calcium oxide, potassium oxide, sodium oxide, etc. If they are high in clay bricks, they can make the clay bricks lighter in color, but the refractory should be reduced. It is recommended that customers should purchase clay bricks with yellow and pale yellow appearance when purchasing clay bricks. However, the melting point of the refractory brick needs to be precipitated, so as to ensure that the sintering temperature of the clay brick has been reached.
Clay bricks belong to one of the main varieties of silicon-aluminum series products, which are refractory products with an Al2O3 content of 30-48% made of clay clinker as aggregate and refractory clay as a binder. It is mainly used in thermal boilers, glass furnaces, cement kilns, fertilizer gas furnaces, blast furnaces, hot blast stoves, coking ovens, electric furnaces, casting and pouring steel bricks, etc. General clay refractory products,