Coal
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Coal

The discovery of the use of fire helped to distinguish humans from other animals. Early fuels were primarily wood (and charCoal derived from it), straw, and dried dung. References to the early uses of Coal are meagre. Aristotle referred to “bodies which have more of earth than of smoke” and called them “Coal-like substances.” (It should be noted that biblical references to Coal are to charCoal rather than to the rock, Coal.) Coal was used commercially by the Chinese long before it was utilized in Europe. Although no authentic record is available, Coal from the Fushun mine in northeastern China may have been employed to smelt Copper as early as 1000 B.C. Stones used as fuel were said to have been produced in China during the Han dynasty (206 B.C.– 220 A.D.).

Coal producer, Iran Coal producer, Coal, supplier

Coal is an abundant natural resource that can be used as a source of energy, as a chemical feedstock from which numerous synthetic compounds (e.g., dyes, oils, waxes, pharmaceuticals, and pesticides) can be derived, and in the production of coke for metallurgical processes. Coal is a major source of energy in the production of electrical power using steam generation. In addition, gasification and liquefaction produce gaseous and liquid fuels that can be easily transported (e.g., by pipeline) and conveniently stored in tanks.

Iran Coal, Coal

Iran has many active Coal mines such as Tabas, Shemshak, Nayband, etc. So we can count Iran as one of the best Coal Suppliers of Middle East. MGT Mineral Company can make commercial communities to export Coal to all around the world. 

 

 

Different Types of Coal

We use the term "coal" to describe a variety of fossilized plant materials, but no two coals are exactly alike. Heating value, ash melting temperature, sulfur and other impurities, mechanical strength, and many other chemical and physical properties must be considered when matching specific coals to a particular application. Coal is classified into four general categories, or "ranks." They range from lignite through sub-bituminous and bituminous to anthracite, reflecting the progressive response of individual deposits of coal to increasing heat and pressure. The carbon content of coal supplies most of its heating value, but other factors also influence the amount of energy it contains per unit of weight. (The amount of energy in coal is expressed in British thermal units per pound. A BTU is the amount of heat required to raise the temperature of one pound of water one degree Fahrenheit.)

  • Anthracite: Anthracite is coal with the highest carbon content, between 86 and 98 percent, and a heat value of nearly 15,000 BTUs-per-pound. Most frequently associated with home heating, anthracite is a very small segment of the U.S. coal market. There are 7.3 billion tons of anthracite reserves in the United States, found mostly in 11 northeastern counties in Pennsylvania.
  • Bituminous: The most plentiful form of coal in the United States, bituminous coal is used primarily to generate electricity and make coke for the steel industry. The fastest growing market for coal, though still a small one, is supplying heat for industrial processes. Bituminous coal has a carbon content ranging from 45 to 86 percent carbon and a heat value of 10,500 to 15,500 BTUs-per-pound.
  • Subbituminous: Ranking below bituminous is subbituminous coal with 35-45 percent carbon content and a heat value between 8,300 and 13,000 BTUs-per-pound. Reserves are located mainly in a half-dozen Western states and Alaska. Although its heat value is lower, this coal generally has a lower sulfur content than other types, which makes it attractive for use because it is cleaner burning.
  • Lignite: Lignite is a geologically young coal which has the lowest carbon content, 25-35 percent, and a heat value ranging between 4,000 and 8,300 BTUs-per-pound. Sometimes called brown coal, it is mainly used for electric power generation.

 

Coal exporter, Iran Coal exporter

Coal Occurrence:

Coal forms from the accumulation of plant debris, usually in a swamp environment. When plant debris dies and falls into the swamp the standing water of the swamp protects it from decay. Swamp waters are usually deficient in oxygen, which would react with the plant debris and cause it to decay. This lack of oxygen allows the plant debris to persist. In addition, insects and other organisms that might consume the plant debris on land do not survive well under water in an oxygen deficient environment.

Coal Usages:

Coal is used worldwide in many day-to-day goods and services that we might sometimes take for granted in our modern society – such as electricity generation, steel production and cement manufacturing.

There are two main types of coal, which have different uses:

  1. Thermal coal: mainly used for electricity generation.
  2. Coking coal (or metallurgical coal): mainly used in the production of steel.
  • Electricity production is the primary use of Coal in the United States. Most of the Coal mined in the United States is transported to a power plant, crushed to a very small particle size and burned. Heat from the burning Coal is used to produce steam, which turns a generator to produce electricity. Most of the electricity consumed in the United States is made by burning coal. 
  • Coal has many other uses. It is used as a source of heat for manufacturing processes. For example, bricks and Cement are produced in kilns heated by the combustion of a jet of powdered coal. Coal is also used as a power source for factories. There it is used to heat steam and the steam is used to drive mechanical devices. A few decades ago most Coal was used for space heating. Some Coal is still used that way but other fuels and coal-produced electricity are now used instead. 
  • Coke production remains an important use of coal. Coke is produced by heating Coal under controlled conditions in the absence of air. This drives off some of the volatile materials and concentrates the carbon content. Coke is then used as a high carbon fuel for metal processing and other uses where an especially hot-burning flame is needed. 
  • Coal is also used in manufacturing. If Coal is heated the gases, tars and residues produced can be used in a number of manufacturing processes. Plastics, roofing, linoleum, synthetic rubber, insecticides, paint products, medicines, solvents and synthetic fibers all include some coal-derived compounds. Coal can also be converted into liquid and gaseous fuels; however, these uses of Coal are mainly experimental and done on a small scale.

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