What is metallurgical coke?

Metallurgical coke is produced by destructive distillation of coal in coke ovens. Prepared coal is "coked", or heated in an oxygen-free atmosphere until all volatile components in the coal evaporate. The material remaining is called coke.

What are the characteristics of good metallurgical coke?

Metallurgical coke is a porous, fissured, silver-black solid and is an important part of the ironmaking process since it provides the carbon (C) and heat required to chemically reduce iron burden in the blast furnace (BF) to produce hot metal (HM).

Why coke is used in metallurgical process?

Coke is used as a fuel and as a reducing agent in smelting iron ore in a blast furnace. The carbon monoxide produced by its combustion reduces iron oxide (hematite) in the production of the iron product. Coke is commonly used as fuel for blacksmithing.

Which type coke is used in metallurgical industries?

Metcoke, limestone and iron ore are mixed together in high temperature furnaces where extreme heat causes the chemical properties to bond, forming iron and steel. More than 95 percent of the metcoke produced is used in the iron and steel industries. Metallurgical coke is used in products such as: Iron.

What is the difference between metallurgical coal and coking coal?

Metallurgical coal (or “coking coal”) is mined to produce the carbon used in steelmaking, while thermal coal is used to make steam that generates electricity.

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Can steel be made without coke?

The world is powering past coking coal

It is a myth that steel production requires coking coal. A third of global steel today is made without coking coal, either through scrap recycling or gas-based steel production; and counting.

Can metallurgical coal be replaced?

Well, yes, we can. It's called HydroMOR and it replaces expensive metallurgical coal with abundant, affordable lignite (brown coal), delivering lower emissions and, most importantly lower cost.

How is metallurgical coke manufactured?

Metallurgical coke is produced by destructive distillation of coal in coke ovens. Prepared coal is "coked", or heated in an oxygen-free atmosphere until all volatile components in the coal evaporate. The material remaining is called coke.

Who produces metallurgical coal?

Metallurgical coal comes mainly from Canada, the United States, and Australia, with Australia exporting 58% of seaborne trade, mostly going to China.

What is metallurgical coal used for?

Metallurgical coal is an essential ingredient in the production of steel, one of the most widely used building materials on earth. It takes around 770 kilograms of coal to make one ton of steel with approximately 70 per cent of global steel produced in basic oxygen blast furnaces.

Why is coke used in metallurgical process than coal?

SInce coke is a purer form of carbon then coal and is porous, it is a better reducing agent then coal.

What is difference between coke and coal?

Coal and Coke are both a type of fossil fuels. The difference between these two fuels is that coal is mostly carbon but coke contains mostly water and less than half the carbon content of coal.

What is metallurgy process?

Metallurgy is defined as a process that is used for the extraction of metals in their pure form. The compounds of metals mixed with soil, limestone, sand, and rocks are known as minerals. Metals are commercially extracted from minerals at low cost and minimum effort.

What is CSR and CRI of coke?

Coke reactivity to carbon dioxide (CRI) determines percent weight loss of coke, as a result of carbon dioxide action on the coke sample in temperature 1100°C. The coke strength after reaction (CSR) determines >10 mm grain amount yield obtained after mechanical tumbling of coke after reaction with carbon dioxide.

What is M40 and M10 in coke?

The coke mechanical strength are indicated as micum 10 (M10) and micum 40 (M40) which are indices of resistance to abrasion and fragmentation, respectively. Dilatometers and plastometers are commonly used to study coals plastic properties. On.

Is metallurgical coal a fossil fuel?

Coal is the largest and most widespread fossil fuel resource providing 23 per cent of the world's energy. However widespread concern about environmental emissions from coal has started to limit the growth in use of this important energy source.

Which country is the largest producer of coking coal?

China is by far the leading hard coal producer worldwide. In 2020, the economic powerhouse was responsible for over 3.5 billion metric tons of hard coal produced. In 2020, China was also the leading global coal consumer, at 82.27 exajoules.

What's the difference between thermal and coking coal?

Thermal coal, also called steaming coal, has a lower energy content and higher moisture and is used to generate electricity. Metallurgical or coking coal has a higher energy content and lower moisture and is used to make iron, steel and other metals.

Which type of coal is used for manufacturing coke?

Metallurgical coal, also known as coking coal, is used to produce coke, the primary source of carbon used in steelmaking.

What is the difference between petcoke and met coke?

Petcoke has a significantly high heating value compared to metallurgical coke (metcoke) and bituminous coals (see Table 2). The higher heating value comes at the cost of higher sulfur and nitrogen content, however. Ash content is relatively low, compared to coal, but much of it is in the form of heavy metals.

Which is a better fuel coal or coke?

Coke is a better fuel than coal. Coke is more efficient and has a higher calorific value than coal.

What is low ash metallurgical coke?

Low Ash Metallurgical Coke (LAM Coke/MET Coke) is solid carbonaceous material obtained from destructive distillation of low ash, low sulphur Bituminous coal. Coke is formed when the coal is heated in the absence of air. The residue obtained from the carbonization of a non-coking coal such as sub Bituminous coal.

Can you make steel without metallurgical coal?

Coking coal is usually bituminous-rank coal with special qualities that are needed in the blast furnace. While an increasing amount of steel is being recycled, there is currently no technology to make steel at scale without using coal.

Does steel need coking coal?

Steel is an essential material for modern life and global steel production is dependent on coal - 70% of steel produced uses coal. Metallurgical coal – or coking coal – is a vital ingredient in the steel making process. Coking coal is converted to coke by driving off impurities to leave almost pure carbon.

Why is coking coal needed for steel?

Coal therefore plays three roles in the production of steel: a reducing agent, to turn the pig iron to coke; a source of energy to drive the process by breaking apart molecular bonds; and a source of carbon for the final product (steel is an alloy of carbon and iron).