Among the largest manufacturers in India, such as Jindal Steel and Power Company and Tata Steel, among others, the Chhattisgarh Sponge Iron Manufacturers Association is one of the major manufacturers in the country.
There are a lot of manufacturers all around the world who develop products that are of high quality and are sold at reasonable prices.
Steel products such as hbi and dri, which are available from our company, have higher quality, as well as a higher purity, and produce less waste than other available options.
What is HBI?
The term “Hot Briquetted Iron” (abbreviated as “HBI”) refers to a compacted form of direct reduced iron (DRI) that is produced with well-defined and consistent chemical and physical properties.
HBI is produced such that it can be transported over long distances and melted in a number of operations involving iron and steel.
In contrast to scrap, which often has a collecting season, it is available without interruption throughout the year. The manufacturer of HBI certifies the chemical composition of the product, and ISO quality standards are adhered to in a stringent manner.
The development of HBI is typically attributed to the presence of certain physical characteristics. Because of its greater mass, it can quickly penetrate the slag layer that covers the furnace.
HBI is 75 percent less likely to pick up water and is one hundred times more resistant to reoxidation than conventional DRI.
HBI also results in a lower number of fines, which gives users more value and reduces the number of safety concerns during the handling and shipping processes.
HBI can be batch charged or continuously fed to a melting furnace due to its size and shape being compatible with standard material handling equipment. Additionally, its size and shape allow it to be used in a variety of applications.
BENIFITS Associated with Briquetted Hot Iron (HBI)
HBI is a contemporary charge material that can be utilized in steelmaking furnaces either in conjunction with scrap or as an alternative to scrap. It can also be utilized in ironmaking applications as an addition to blast furnaces.
Because it is made directly from iron oxides without melting, HBI does not contain any of the impurities that can be found in molten iron. These impurities can be caused by inclusions of coke, limestone, or scrap metal.
The chemistry of the iron oxide that is used in the production of HBI determines the amount of residual metal elements (copper, nickel, chrome, molybdenum, and tin) as well as sulfur and phosphorus that are present in the finished product. HBI is low in these elements.
THE STEELMAKER MAY REAP BENEFITS FROM THE APPLICATION OF HBI IN EITHER OF TWO MANNER:
It makes it possible to produce steel goods of a high quality, which previously could not be manufactured consistently due to the high levels of residual elements that are inherent in the majority of obsolete scrap.
It makes it possible to employ waste metal of lesser quality and lower cost when manufacturing basic grades of steel products.
Because of the diluent effect that HBI has, it is primarily utilized in the electric arc furnace (EAF). This helps to reduce the total amount of metallic residuals and sulfur in the product.
In addition, the operational advantages listed below are also shared by other types of DRI, including HBI:
Combined with other metallics to achieve the highest total charge efficiency.
Can be supplied constantly, which maximizes the amount of time the power is on and increases the weight of the bath.
Fosters the formation of frothy slag while simultaneously lowering the level of nitrogen in EAF Shields refractory to minimize damage
Both alternating current (AC) and direct current (DC) furnaces, as well as long or short arc operations, are supported.
able to function with injected fuels as well as oxygen
Balances of mass and heat that are predicable
These one-of-a-kind qualities of HBI also confer the following advantages:
Because of its high density (5.0 g/cm3), it can quickly penetrate the slag layer that covers the furnace.
Additionally, it has increased thermal and electrical conductivity, which enables it to melt more quickly.
Less creation of fines throughout the handling, shipping, and storage processes
Simple to manipulate, store, and move under any conditions, and works well with the basic equipment for moving and handling goods.
Transportation by sea is now safer and less expensive.
The production of HBI occurs when iron ore is reduced using natural gas as the reductant. It is referred to as the direct reduction process, and it is a production method that is kind to the environment.
Natural gas, rather than coke, is used in a DRI plant, because natural gas is more environmentally friendly. The reduction procedure is carried out in the tower designated for that purpose.
The tower, which stands 137 meters (450 feet) tall, serves as the plant’s central nervous system. The process of direct reduction is a complex process that, when broken down into its component parts and presented in simple words, consists of the following steps:
Iron ore pellets, a primary raw material:
The reactor is supplied with iron ore pellets, which serve as the raw material.
Converting natural gas into reducing gas entails the following steps:
After being altered into reducing gas, natural gas is subsequently injected.
A closed system uses reducing gas, which is recycled and flows throughout the system.
The procedure known as direct reduction:
In accordance with the counterflow concept, hot reducing gas is circulated through the iron ore in the direction from the bottom to the top.
The amount of oxygen that is present is decreased, which results in the production of “sponge iron.”
Briquettes are formed from “sponge iron” by pressing it into pellets (Hot Briquetted Iron)
Procedure that is kind to the environment
In addition to meeting or exceeding all of the most recent environmental and technological criteria in the United States and Europe, the direct reduction facility in Texas offers voestalpine a number of additional environmental and technological benefits, including the following:
Instead of coke, natural gas is used in production.
Within an enclosed reactor is where the reduction process takes place.
The heat from the process is recovered, and the gases from the process are recycled.
Reduced levels of diffuse dust emissions are maintained by the use of enclosed conveyor belts and ore storage warehouses.
The recycling of collected dust results in the highest possible raw materials efficiency while simultaneously reducing emissions to a negligible level.
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