Heating Furnace Application
Refractory insulation coating to prevent cracking of refractory materials for heating furnace. Heating furnace is used in petroleum, chemical, metallurgy, machinery, building materials and other industrial fields, heating furnace is a necessary equipment in the process of oil field development.
Types of refractory materials
Refractory adiabatic coating to prevent cracking of refractory materials for heating furnace. Refractory materials commonly used in heating furnace are: bauxite cement, low cement, phosphate, mullite, refractory bricks, other refractory materials such as refractory fibers, plastic, and so on.
Reasons for refractory cracking
Bauxite cement is characterized by high heat of hydration, fast setting speed, high early strength, heat resistance, corrosion resistance, impermeability, resistance to freezing and thawing are relatively good kind of cement.
Mullite refractory raw materials, it has the characteristics of uniform expansion, excellent thermal shock stability, high softening point of load, small creep value at high temperature, high hardness, good chemical corrosion resistance, etc. At present, there are mainly high-purity electrofused mullite, ordinary electrofused mullite, all-natural bauxite concentrate sintered mullite and light burnt mullite.
Refractory bricks are a kind of building material bricks, its property is the same as its name “refractory”. Refractory bricks have good shock resistance; refractory bricks have good abrasion and impact resistance; refractory bricks can resist the erosion of slag at high temperature, but also can withstand the pressure of shear and so on.
Boiler operation, the above refractory materials in the heating up too quickly, in the case of rapid cold and heat, there will be cracking and damage to the problem occurs, resulting in the boiler can not be used normally, brush LHY-1201 fire-resistant adiabatic coatings, the product consists of high-temperature adhesive, nano-high-temperature ceramic beads, a variety of high-temperature filler, special additives, can work for a long time in the high-temperature environment of less than 2,000 degrees Celsius for the thermal insulation of the equipment Heat preservation, instant working temperature can reach 2000 degrees. It is made of waterproof, fireproof, anticorrosion, wear-resistant, insulation and other advantages, coating application of nano-ceramic technology, heat insulation and heat preservation efficiency of up to 80% or more.
The coating can be painted on all inorganic materials, such as metal, bricks, concrete, wood, fiberglass, castables, refractory materials, etc., and the coating is non-combustible and the fireproof grade is A class. Applying the coating prevents condensation. No harmful substances, VOC and other components, construction and use of the process will not cause harm to the human body. Heat insulation for high temperature equipment, reducing fuel and energy consumption, and at the same time, as the surface temperature of the equipment is reduced.
The coating has been successfully used in aviation, metallurgy, textile, steelmaking, cement manufacturing, thermal power generation, new energy generation and other parts of the high-temperature equipment heat insulation and heat preservation, such as furnace, high-temperature steam piping, high-temperature chimneys, high-temperature flue, high-temperature hot gas piping, a variety of molds, heat exchangers, dyeing cylinders heat insulation and heat preservation, etc.. Coating applied to the inner wall of various heating furnaces, such as ceramic fiber lining, can extend the service life of ceramic fiber about 50%, to prevent the fiber lining slagging. Coating applied to the inner wall of the heating furnace casting lining and refractory brick lining, can extend the life of the lining by 50%, to prevent cracking of refractory bricks and other furnace lining after a long period of high-temperature sintering.
More details about reheating furnace
What is the process of reheating a furnace?
Reheating Furnaces serve the purpose of heating steel blooms, billets or slabs in steel rolling mills. Reheating furnaces takes this steel stock up to approximately 1200 degree Celsius. The steel begins to deform at this temperature, and the steel rolling process can begin.
What is the purpose of the reheating furnace?
The function of a reheating furnace is to heat steel stock or billets to rolling temperature to prepare the semi-finished product, i.e., the billet cast for the next stage of rolling by the continuous casting machine.
What is the temperature of a reheating furnace?
Reheat furnaces are used to bring a metal billet to the correct temperature for rolling or extrusion processes, typically in the range 1000 °C to 1250 °C (1830 °F to 2280 °F).
What are the zones of reheating furnace?
Reheating Furnace Machine is a machine used to heat steel to a certain temperature. Reheating Furnaces can be divided into five zones: Non-firing, charging zone, preheating, heating and damping.