There are some manual and automatic screw machines for producing biomass briquettes in the market for sale. The steel industry is one of the industries where briquette technology is widely used, which can be used for coal briquetting, coke briquetting and sponge iron briquetting. Sponge iron balls are products used by many steel making units in the world. The sponge iron briquetting process is divided into two groups of hot and cold briquettes according to the temperature of the sponge iron entering the briquetting machine. Below, these two processes will be reviewed. 1- Cold briquetting: During cold briquetting, the input material enters the briquetting machine at ambient temperature. In this process, two products are known, soft sponge iron briquette and cold sponge iron briquette, depending on the type of material fed into the briquetting machine. 1-1- Soft sponge iron ball: In the steel industry, as in any other industry, the optimal use of auxiliary materials has a special place. In direct reduction units, small amounts of sponge iron are typically produced, and due to their small size (less than 5 mm), their direct loading into the steelmaking furnace reduces production efficiency and increases losses. In this way, soft sponge iron briquettes and their product "soft sponge iron briquettes (CBI)" are used as a conventional solution for optimal utilization of the by-products from direct regeneration plants. 
Due to the limited amount of soft iron sponge used in the direct reduction unit (less than 10% of the direct reduction unit, the capacity of the briquetting unit is also limited, and this material is usually used in the adjacent steelmaking unit of the direct reduction unit. With other word, this product was never considered a commercial product in the world market due to its limited production and its poor performance compared to other members of the sponge iron family. 2-1- Cold sponge iron ball: The world's largest direct reduction plant is the manufacturer of chilled sponge iron (CDRI). The inherent properties of sponge iron, such as high specific surface area, low oxidation and wear resistance and poor mechanical properties, lead to the risk of fire always accompanied by the storage and transport of this product, so the International Maritime Organization (IMO) formulated strict regulations. Therefore, storing and transporting sponge iron is considered too expensive and risky. 
biomass briquette machine for sale
you can always find second-hand biomass briquette machines in the market for sale. Cold briquetted iron is one of the most important kinds of briquettes in the market that because of its importance always has its customers in the market. In the cold briquetting method for briquetting, we feed the material at room temperature into the briquetting machine. The output of this machine is divided into two types according to the feed type. The two products are soft iron sponges and cold iron sponges. A kind of briquette produced by low temperature direct reduction method with sponge iron as raw material is called cold briquette (CBI). Sponge iron cold briquetting corrects to some extent the defects of sponge iron, and alloying elements can be added during the production process. As previously mentioned, cold briquettes are obtained by direct regeneration of sponge iron. After the sponge iron is regenerated, the regenerated sponge iron is mixed with water and glue and placed in a briquetting machine under very high pressure. As a result of these pressures on the mixed material, agglomerates of cold sponge iron are obtained. 
Characteristics of cold briquettes
- Very high strength and crush resistance
- Has wear resistance
- Resistance to loss of metal quality
- Has very high chemical stability
- High density of cold briquette
Application of cold-pressed ball in the steel industry
- The use of cold-pressed balls reduces coke consumption and improves the quality of blast furnace metal loads
- Since the carbon and impurity content of cold briquetting is very low, the use of cold briquetting can produce alloy steel with the smallest impurities.
- In the converter, cold briquettes are a good substitute for scrap in the name of cooling
- Induction furnaces and arc furnaces use cold briquettes instead of steel scrap
types of briquetting machines pdf
If you are interested in types of briquetting machines you can easily find them in a pdf in our website. You can search and find all kinds of automatic and manual briquetting machines in the market. The charcoal blowing machine uses the raw materials for charcoal, namely: sawdust (using WCHS series machines to produce sawdust), walnut shells, etc. This equipment is the main equipment of the charcoal production line. The quality of the finished coal depends largely on this phase. Two very important factors that affect coal quality:
- The moisture content of the manufactured powder
- Produced powder particle size (uniformity)
The drying and moistening of wood flour and sawdust are carried out before the briquetting phase and is very important. If this is not done correctly, it will put pressure on the compression and block generation part of the extruder and cause damage to the machine (machine cylinder and piston). 
Another factor is the size of the powder produced (the size of the sawdust used as raw material). If this part is not made well, the powder size produced in the game is not 3 to 5 mm, the texture of the output product will be uneven, and it will also cause wear of the cylinder and mandrel of the subcutaneous device. Failure to comply with the above two issues will result in the charcoal produced being soft and not strong enough, which can cause headaches when smoking. briquettes are not spongy: A quality extruder must produce a consistent Madrone output over the working hours. The absence of sponginess and cracks in the production of briquettes in Madang is one of the characteristics of a high-quality extruder. Molecular texture created in raw coal: Another point that directly affects the aesthetics of the charcoal produced and the high compatibility in the consumption process is the molecular texture created in the raw lumps of charcoal. This part is related to the percentage of the raw material composition, the exact moisture percentage of the combined raw material, and the pressure force applied by the Madrone engine should also be considered. Compression and smoke control: Smoke control and filtration operations are very important. The extruder equipment that can be ordered from our company is CE compliant and of the highest production quality, and optimally performs the filtration of the smoke produced at this stage. 
biomass briquette press
The press machines of biomass briquette are capable of pressing 2 to 4 tons of products in an hour. These briquetting machines are used in the following situations: coal, coke, wood soil, and clay, this briquetting machine is usually used for materials that can be added water and glue during the production process. The world's largest producers of sponge iron are Iran and India, and Isfahan Mobarak Steel is the world's largest producer. Briquetting is the most effective way to reduce the oxidation of ferrous iron during storage and transport. The main reason for the expansion of the sponge iron briquette industry is to produce good quality products that are easy to store and transport. Briquetting reduces porosity (separation) and surface and increases density, making it resistant to snuff wear.
- Hot Sponge Iron Balls (HBI) are used in the world's steelmaking industry (since the 70s).
- In recent years, Iranian experts have created Iron Carbon Cold Compacted Ingots (CBIC).
There is a problem with equipping a hot briquette system with a direct regeneration unit with a cold snuff product. This is where the importance of cold sponge iron briquetting comes into play, as it offers several advantages compared to hot sponge iron, with higher carbon content and lower production costs. Therefore, with the help of this technology, the storage and transportation process of sponge iron to steel-making units can be better completed and the export volume of sponge iron in the country has increased significantly. Today, briquetting is considered a well-known industry in the field of handling by-products generated by various industries. Using this technology, materials with fine and non-uniform particles are transformed into briquettes of specific size and shape, thereby improving their performance in the desired application. Briquetting technology has been around for about 200 years, so various industries use it to improve their process performance. The survival philosophy of the briquetting industry can be called "optimized utilization and inefficient production of by-products in all walks of life". However, the past decade has seen the emergence of new applications for the briquetting industry, showing the importance of the industry more than ever. 
types of briquettes
There are Three kinds of briquettes in the market, HBI, CBI and soft briquettes. Heated briquettes (HBI): Hot sponge iron briquettes (HBI), also known as heating briquettes, are the most widely used type of sponge iron briquettes. The production of hot briquettes continues the iron reduction process in a direct reduction furnace. After the reduction reaction, a briquetting device was placed in the lower part of the furnace, where the temperature of the sponge iron was close to 650 degrees Celsius. The sponge iron is pressed by the sponge iron briquetting machine which produces a compact hot briquetting ball considering the high temperature and faster infiltration kinetics. Hot iron briquettes have a larger size than other types of sponge iron briquettes. The mechanical and chemical properties of this briquette are suitable for charging electric arc furnaces. 
Cold briquette (CBI): Sponge iron's cold briquettes are produced after the sponge iron has been produced using a special silicate binder. In general, there are two methods for solid production of sponge iron, direct reduction method and tunnel furnace method. The sponge iron produced by the tunnel kiln method is usually made into cold briquettes. The direct regeneration method is based on natural gas and the tunnel method is based on coal. The tunnel furnace method works by converting coal into carbon monoxide regeneration gas. After regeneration, the sponge iron is mixed with water and glue, in a briquetting machine, under high pressure, into cold sponge iron balls. Cold briquettes or CBI come in different sizes than hot briquettes. soft briquettes: In the steel mill's direct reduction unit, a large amount of sponge iron or slag is also produced in the process. This very small dust is collected. To prevent iron loss and improve efficiency, these dusts, which contain reduced iron and a certain proportion of impurities, are converted into briquettes. For the production of soft briquettes methods similar to those for the production of cold briquettes are generally used. Due to differences in chemical composition and the presence of impurities, soft briquettes are of lower quality. However, it is still used in steelmaking and is useful. 
best briquette machine
The briquette machines are very different and based on the functionality you may need, you can easily choose the best machine. There are many advantages of sponge iron briquettes:
- Since this product is more compact than sponge iron, it takes up less space.
- It is easier to store and transport.
- Sponge iron balls can be stored for a long time to prevent fire and oxidation.
- During the briquetting process of sponge iron, other materials such as carbon and alloying elements may be added.
- sponge iron balls can be exported in bulk by sea.
The price of the sponge iron ball is higher than its raw material sponge iron. But it is widely used because of its good properties for transport and storage. One of the factors that affect the price of sponge iron balls is their type. 
The prices of cold, hot, and soft briquettes are different. In addition to this, market volatility also affects the price of iron sponge balls. The importance of briquettes can be traced back to their use in the production of intermediate profiles and finished steel products. Because the agglomerates are melted in a reducing atmosphere and intermediate profiles or ingots are obtained from this melt. Therefore, the quality and price of briquettes affect the quality and price of rebar, plates, profiles, and generally any product made from briquettes.
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