Acid-resistant bricks have always been a special building material. Due to the particular use environment, they cannot be replaced by other products. Especially oxidation tanks and reaction tanks in the chemical industry have extremely high requirements for acid and alkali resistance, and acid-resistant bricks are generally used. If it is replaced by ordinary ceramic tiles, it will be out of repair for a long time, causing the tank body to be corroded. During the oxidation or reaction process, the strong corrosiveness may cause the liquid leakage of the reaction tank, the milder may cause corrosion damage to the workshop floor wall, and the severer may cause personnel In the event of casualties, chemical companies must pay attention to the selection of materials for decoration, and should not cause serious consequences due to temporary gains.
In the smelting industry, acid-resistant bricks are mainly used to make crucibles for metallurgical metals and precious metals and rare metals; in the steel-making industry, acid-resistant bricks are used as steel ingot protective agents, and acid-resistant bricks are used to make magnesia carbon bricks for steelmaking furnace linings and Carbon filler, etc. The age of the acid-resistant brick crucible is related to the crystallinity of the acid-resistant brick. The larger the scale crystals, the higher the intensity, the better the high temperature resistance, and the longer the crucible age. The reason for making crucibles is the common use of 80 mesh and 50 mesh (0.3~0.18 mm) acid-resistant bricks.
As Conductive Material
Acid-resistant bricks are deeply used in the electrical industry to make electrodes, electric brushes, carbon rods, acid-resistant brick pads, acid-resistant brick rings, electrical active parts, and film kinescope coatings. Among them, acid-resistant brick electrodes are the most widely used. The acid-resistant bricks used in the electrical industry have very very high particle size requirements. The particle size is controlled in the range of 150-325 mesh (0.1-0.42mm), while the particle size of acid-resistant bricks for film imaging and practical use is less than 0.5 microns. The fixed carbon content is required to be in the range of 60 to 999%, the content of harmful impurities is required to be less than 1%, and the content of harmful impurities in the coating of color TV picture tubes is required to be less than 5 ppm.
As a Wear-Resistant and Lubricating Material
Acid-resistant bricks are used as wear-resistant materials and lubricants in the machinery industry. Acid-resistant bricks can be used as wear-resistant materials to slide at a speed of 100 meters per second in the temperature range of -200 to 2000 ℃ without lubricating oil. Acid-resistant brick emulsion is also a good lubricant for many metal polishing (drawing, pipe drawing).
As Sealing Material
The use of flexible acid-resistant bricks as piston rings, sealing rings, etc. should be used in centrifugal pumps, marine turbines, hydraulic turbines, and facilities that transport corrosive media.
Used as a material for sand-finding, forging, pressing and high temperature smelting
Acid-resistant bricks can be used as casting molds for glassware, gray smelting castings, powder smelting pressure molds, high-temperature internal resistance furnace tubes, and so on.
As Corrosion Resistant Material
Many acid-resistant bricks are used to supervise the production of boiling water converters, lining tanks, condensers, combustion towers, suction towers, coolers, refiners, purifiers and other facilities, and are deeply used in petroleum, chemical, wet smelting, and acid-base production. Industrial sectors such as, synthetic fiber, papermaking, etc. can Save a lot of Metal.
Application of Orchard Energy, Haiphong Industry
Acid-resistant bricks are one of the key structural materials for the construction of nuclear backing reactors, used as shielding materials and reflective materials. Acid-resistant bricks are also used as neutron moderators in the orchard to reflect the pile. In the coastal defense industry, acid-resistant bricks are used as solid oils, which are used as rocket nozzles, missile nose cones, aerospace facilities components, heat insulation materials, radiation protection materials, and so on.
As Oil
Cryptocrystalline low-carbon acid-resistant bricks can be used as combustion in micro ovens, industrial pots, bricks, and civil briquettes.
Used as anti-scaling, anti-rust material, cast steel cold welding material
Acid-resistant bricks can prevent scaling on pots, metal rust, and carbon filling for cold welding of cast steel.
Other Functions
Acid-resistant bricks can be used as pencil leads, dyes, polishing agents, fertilizer catalysts, chip carbon rods, glass coolants, etc.