The acid-resistant castable is a kind of amorphous material. Like other amorphous refractories, the acid-resistant castable can be directly used in engineering without being fired. Acid-resistant castables not only have strong plasticity. Among many amorphous materials, the production process of acid-resistant castables is relatively simple. It can be produced by assembly line without special equipment, and the degree of mechanization is high. It is easy to ensure that the quality is in uniform standards, so quality reliability Strong. Because it can be used directly in the project without special treatment, the construction is simple and does not require too much preparation process. However, it should be noted that the acid-proof castable has a slightly poor anti-penetration performance, so it should be laid a layer of waterproof before use. A good base material is then applied to the acid-resistant castable. Acid-resistant castables are widely used in industrial furnaces such as metallurgical industry, petroleum, chemical, building materials, electric power and machinery industries. Compared with other amorphous castables, acid-proof castables have better fluidity, so it is easier to construct and easier. To achieve the desired construction results, and because of the high bonding agent and moisture, it is very prominent in fire prevention, so acid-resistant castables also have excellent high temperature resistance.
The acid-resistant castable has good resistance to attack by all inorganic acids and organic acids other than hydrofluoric acid and hot phosphoric acid, and is mainly used as an anti-corrosion lining, and the high use temperature is about 1200 °C. The acid-proof castable is flexible and can be used as an unshaped refractory material. It can also be used to make various irregular preforms for use. The reasonable use can make the acid-resistant castables have a relatively large performance.
The advantages of acid-resistant castables are as follows: energy savings. Due to the elimination of the high-energy calcination process, only molding, drying and baking are required, and the energy consumption is 5 to 6% of the fired refractory bricks. high productivity. The refractory castable is simple to make and its production efficiency is 4 to 9 times that of the refractory brick. The construction efficiency is high. The construction efficiency of unshaped refractories is 6 to 15 times that of bricklaying. Can be any shape. It can be used to make integral linings and can be used to quickly repair kiln and improve its life and operation rate. Suitable for all types of high temperature engineering. The use of special high-quality materials can be used to prepare masonry materials with good resistance to heat and earthquake resistance to harmful gases and slag erosion, flaking and heat insulation.
The acid-proof castable should be used in the environment with short time and large temperature difference, and it should not be used in a humid environment, and the acid-resistant castable can not be used under high temperature, which will destroy it. Use performance to reduce the strength of acid-resistant castables, so be sure to pay attention to these during use, and strive to play a larger characteristic of acid-resistant castables.
