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ANTHRACITE

ANTHRACITE

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In the last 15 years Minermet Group has opened up a new Division for Anthracite, Coal and Coke which is expanding very much, for markets in Europe, Russia, Middle East, Pakistan, India, Vietnam,  Australia and Indonesia.


Coal (from the Old English term col, which has meant "mineral of fossilized carbon" since the 13th century)is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams. The harder forms, such as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure. Coal is composed primarily of carbon along with variable quantities of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen.

Throughout history, coal has been used as an energy resource, primarily burned for the production of electricity and/or heat, and is also used for industrial purposes, such as refining metals. A fossil fuel, coal forms when dead plant matter is converted into peat, which in turn is converted into lignite, then sub-bituminous coal, after that bituminous coal, and lastly anthracite. This involves biological and geological processes that take place over a long period. The Energy Information Administration estimates coal reserves at 948×109 short tons (860 Gt).One estimate for resources is 18 000 Gt.

Coal is the largest source of energy for the generation of electricity worldwide, as well as one of the largest worldwide anthropogenic sources of carbon dioxide releases. In 1999, world gross carbon dioxide emissions from coal usage were 8,666 million tonnes of carbon dioxide.In 2011, world gross emissions from coal usage were 14,416 million tonnes.Coal-fired electric power generation emits around 2,000 pounds of carbon dioxide for every megawatt-hour generated, which is almost double the approximately 1100 pounds of carbon dioxide released by a natural gas-fired electric plant per megawatt-hour generated. Because of this higher carbon efficiency of natural gas generation, as the market in the United States has changed to reduce coal and increase natural gas generation, carbon dioxide emissions have fallen. Those measured in the first quarter of 2012 were the lowest of any recorded for the first quarter of any year since 1992.In 2013, the head of the UN climate agency advised that most of the world's coal reserves should be left in the ground to avoid catastrophic global warming.

Coal is extracted from the ground by coal mining, either underground by shaft mining, or at ground level by open pit mining extraction. Since 1983 the world top coal producer has been China.In 2011 China produced 3,520 million tonnes of coal – 49.5% of 7,695 million tonnes world coal production. In 2011 other large producers were United States (993 million tonnes), India (589), European Union (576) and Australia (416).[9] In 2010 the largest exporters were Australia with 328 million tonnes (27.1% of world coal export) and Indonesia with 316 million tonnes (26.1%),while the largest importers were Japan with 207 million tonnes (17.5% of world coal import), China with 195 million tonnes (16.6%) and South Korea with 126 million tonnes (10.7%).

Q:The difference between raw coal and fuel coal
Fuel coal is a part of the process that has gone through the water vapor and is not easy to burn
Q:Does Medicinal Charcoal Tablets have any effect on gout
The pathological changes of the patients with gout and the damage to the human body are caused by the deposition of uric acid in the body tissues and kidneys. In addition to uric acid concentration, the pH of the human body plays an important role in the deposition of uric acid. When pH was 4.75, the level of uric acid in 91% was non free, and was free at pH6.75. When the normal blood pH was 7.4, 98% uric acid was free
Q:Coal is used to do?
. Some low ash, low sulfur and high HGI anthracite is also used as raw material for blast furnace injection. Coal: coal soot level top coal, it is characterized by a higher ignition temperature (350 - 360 DEG C), high calorific value, weak bond or not. Coal is mainly used for power generation and power plant boiler fuel. The use of coal, and the other with the use of high volatile coal is also a good way. Lean coal: low volatile, low bond strength, can be used alone to coking. As with other suitable for coking coal blending, lean coal incorporation will make block increase the degree of coke products.
Q:I was a major in geological engineering, in the practice of mineral petrology, the teacher asked, "the mineral composition of coal?" Is a mineral petrology, coal chemistry is not in, please master, senior students. Thank you
The composition of coal is mainly composed of organic matter, which is mainly composed of carbon, hydrogen, oxygen, nitrogen and other elements. There are ten kinds of elements in coal, but the elements of coal are usually composed of five elements, namely carbon, hydrogen, oxygen, nitrogen and sulfur. In coal, the content is very small, a large variety of other elements, generally not as the composition of the elements of coal, but only as an element or trace elements in coal.
Q:The basic situation of coal occurrence in coal mining area
1.1 coal seam corner coal occurrenceIn recent years, the large-scale mechanized production mode and formal mining layoutThe utility model causes the existing production area to leave the side angle residual block section and various small coal pillarsAngle coal at
Q:1 tons of standard coal to produce heat energy equal to how much Coke
(7 million calories per kilogram of calories to calculate: 1 thousand card =4180 joules);
Q:What is the difference between carbon and carbon materialsJust out of work, do activated carbon, carbon materials and carbon materials often see, I do not know what the difference, trouble you!
Carbon materials are usually specified, especially carbon and graphite materialsCarbon material is a kind of generalized carbon containing materialAbove.
Q:What is the name of the coal Juban and Hang Hau price?
At present, the price of the pit is the seller and the buyer in the mouth of the transaction price, the price is bare price, including the basic of sustainable development of coal
Q:What is the smell of charcoal burning
Similar to barbecue flavor, but generally refers to smokeless carbon, so the taste is less than barbecue flavor
Q:What is the thermal stability of coal
(2) 6~13 mm 6~13 mm. Determination of coal level of coal 500 cubic centimeters, said its weight in preheating to heating muffle furnace 850 DEG C for 90 minutes, then remove the weighing and screening. The "6" mm, 3 mm,% total weight and number of char < 1 mm as the stability index KP6, KP3 and KP1 index show that the greater the value, the poor thermal stability.Thermal stability classification of coalGrade thermal stability KP6,%Good thermal stability is less than or equal to 30Thermal stability medium 30~45Poor thermal stability 45

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