Metallurgical Coke
Your Professional Metallurgical Coke Supplier
Hebei Hangba International Trade Co., Ltd. has thrived in the coke industry for over 11 years. Our extensive export experience makes us a reliable global partner, with a strong reputation built on expertise and long - term commitment.We offer a wide range of high - quality products, including metallurgical coke, foundry coke, semi - coke, graphite petroleum coke, calcined petroleum coke, and calcined anthracite coal. These products are essential for industries where energy matters and cost - effectiveness is key.
Why choose us
Quality Assurance
Quality is our top priority. Every production step is strictly controlled to meet international standards. To further assure our clients of the superior quality of our products, we support third - party inspection.
Quality Service
We support port inspections. Our team is available 24/7, 7 days a week for any inquiries or assistance.
Our Market
Our Market include Indonesia, Malaysia, India, Pakistan, Japan, Vietnam, also North America, etc.
Customized Services
Arrange production according to the customer's product specifications. Customizable granularity and packaging
Metallurgical Coke
Metallurgical coke (or “met coke”) is a type of solid fuel that is carbonized coal, mainly used for blast furnace ironmaking and non-ferrous metal casting and smelting. It is manufactured by heating coal in a furnace (or coke oven) in the absence of oxygen (a process referred to as coking) at a high temperature. This process drives off volatile compounds, like water and sulfur and gas, and creates a solid, porous material that is very high in carbon.
|
Model No. |
Fixed Carbon(Min) |
Ash(Max) |
Volatile matter(Max) |
Sulfur(Max) |
Moisture (Max) |
Size |
|
HB-MT-01 |
86.5% |
12% |
1.5% |
0.6% |
8% |
30-80mm 60-80mm 80-120mm |
|
HB-MT-02 |
86% |
12.5% |
1.5% |
0.6% |
8% |
|
|
HB-MT-03 |
85.5% |
13% |
1.5% |
0.6% |
8% |
|
|
HB-MT-04 |
85% |
13.5% |
1.5% |
0.8% |
8% |
Features of Metallurgical Coke
High Strength
Coke should withstand the intense pressures of the furnace. Strong coke does not shatter under the pressure of tons of metallic ore stacked on top of it in the smelting process.
Porosity
Well, any type of coke that a smooth structure (which provides high Porosity) will allow gas to pass freely though coke and promote fast reactions with iron ore. It also facilitates the gas exchanges needed in the production of molten iron.
Low impurity
Impurities contained in the coke, such as sulfur, phosphorus, and ash. It often contaminate the final product and ultimately affect the quality of the steel. Good-quality coke must be almost pure carbon, with little of the impurities.
Thermal Stability
The ability of coke to remain stable under high heat application without breaking down or reacting chemically. So, it burns slowly and gives up constant heat in the furnace.
Type of Metallurgical Coke
Nut Coke
Typically ranges from 25 to 40 mm in size, nut coke is commonly used in blast furnaces.
Blast Furnace Coke
Larger in size, this coke is applied directly in blast furnaces for iron production.
Foundry Coke
Used in producing cast iron, foundry coke has specific properties that enhance its performance in foundries.
Smokeless Fuel Coke
Developed for environmental advantages, this type is more efficient and burns cleaner.
Applications of Metallurgical Coke
Iron Production
The primary use of metallurgical coke is in blast furnaces, where it acts as both a fuel and a reducing agent.
Steel Manufacturing
Integral to producing high-quality steel, coke provides the necessary energy in electric arc furnaces.
Non-ferrous Metal Production
Utilized in smelting operations to manufacture various non-ferrous metals.
Chemical Industries
Low price metallurgical coke is also used as a feedstock for numerous chemical processes, adding to its industrial significance.
Metallurgical Coke Composition
Metallurgical coke is the most important material utilized in the production of iron in a blast furnace. It consists mainly of carbon (85-90%), with sulfur, ash, and moisture in smaller amounts. The exact proportions of these elements are dependent on the type of coal used and the coking process.
Carbon
The reason coke is capable of acting as a fuel and reducing agent is due to the high carbon content. It reacts with iron ore forming carbon monoxide which is needed for iron ore reduction.
01
Sulfur
The enemy of steelmaking, sulfur makes steel production low quality. This means that the sulfur content in metallurgical coke is reduced to the maximum extent possible to obtain a quality product.
02
Ash
The ash also need to be low and excess of this can lead to furnace slag formation which can lead to defects in steel.
03
Moisture
Moisture content should also be controlled because too much moisture will stop effective burning and can cause undesired chemical reactions.
04
Physical and chemical properties of metallurgical cokeDescription
The physical and chemical properties of metallurgical coke play a key role in its performance in industrial processes. Chemically, metallurgical coke consists mainly of pure carbon with a high proportion of aromatic compounds. This unique combination gives metallurgical coke high thermal resistance and chemical stability against reducing gases such as carbon monoxide and hydrogen.
Physically, metallurgical coke has a porous and hard structure. Its porosity allows reducing gases and gaseous products to flow easily during metallurgical processes. Coke’s hardness and high mechanical strength allow it to withstand the heavy load of upstream materials in blast furnaces without crushing or collapsing.
Another important property of metallurgical coke is the absence of ash production during combustion. This unique feature is due to the high purity of carbon in the coke structure. In metallurgical processes such as blast furnaces, it is very important not to produce ash from coke, because ash can clog gas channels and disrupt the process. This feature makes metallurgical coke a very valuable material in the metal industry.
Met coke manufacturing process
Principle of Coke Production
In the blast furnace, coke provides a carbon source for the reduction reaction of iron ore and supports the stove's structure to keep it stable. Coke reacts with oxygen in the air to produce carbon monoxide, which reacts with iron oxide in the iron ore to reduce it to metallic iron and release carbon dioxide.
Coke not only acts as a reducing agent, but its strong structure also supports iron ore and limestone, ensuring that everything in the furnace usually operates. The porous structure of the coke helps the gas flow penetrate and increases the efficiency of the reaction. The fine-grained structure of the coke (about 1.5 microns) optimizes the reaction environment inside the blast furnace, making the reduction reaction more efficient.
Metallurgical coke production steps
Specialized coke ovens generally carry out coke production. Construction teams typically build the coke ovens to a height of 6 meters, a depth of 15 meters, and a width of 0.5 meters, stacking multiple units to form a large-scale production system. The coal coke charge is heated to about 1000°C inside the coke oven by heating the walls.
During this process, volatile substances in the coal, such as gases and tars, are released and recycled to be converted into coke. Each coke oven can handle 15 to 30 tons of coal, gradually forming during a charring process of about 18 hours.
Volatiles are recovered as by-products and often used in producing fertilizers or chemicals, allowing coke production to go beyond meeting ironmaking needs and promoting efficient use of resources.
Key process parameters
Several process parameters have an impact on the quality and productivity of coke. First, the strength of the coke is critical; it must be strong enough to support the iron ore load in the blast furnace. Secondly, they have to control the reactivity of the coke to ensure that it can efficiently reduce the iron oxidesFurther, the pore structure of the coke is equally critical; it must have good airflow permeability to ensure that the reduction reaction proceeds smoothly.
The fine-grained mosaic structure of the coke is an important quality indicator, which improves the reactivity of the coke and promotes the rate of the reduction reaction. Therefore, operators must strictly control parameters such as coal coke ratio, coke oven heating temperature, and carbonization time during production. These factors directly affect the final quality and production efficiency of coke. These factors directly affect the final quality and production efficiency of coke.