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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: Activated carbon is an air embargo?
Yeah!! Prohibited items include: flammable solids: spontaneous combustion of substances, the release of flammable substances in water
Q: How much coal is needed in a heating period in the North
The calorific value of coal is different, the thermal efficiency of the boiler is also different, it is difficult to calculate, can only be estimated according to the size of the boiler, the error is very large
Q: How to make charcoal war of survival
The trees cut into sections, lit in a kiln, burning to a certain extent, closed air into the kiln, waste heat to heat water and carbonization of wood, wood tar is leavened, carbonization of wood charcoal as.
Q: What are the types of coal
Anthracite: there are two kinds of powder and small, black and shiny metal. Fewer impurities, compact, high fixed carbon content, can reach more than 80%; the content of volatile low, below 10%, burning high, fire is not easy; but high heat, slow fire burning up just when the fire is relatively large, strong firepower, short flame and smoke less, long burning time, weak bond when burning, not easy to slag. Should be mixed with appropriate amount of coal to burn, in order to reduce the fire intensity.
Q: What is the effect of the dosage of activated carbon on the determination of adsorption equilibrium concentration?
Increase the amount of activated carbon, equivalent to reducing the equilibrium concentration. Therefore, it is possible to reduce the measured equilibrium adsorption capacity.
Q: What is the meaning of coal m40.m10
Index of coke:The breaking strength of coke refers to the ability of coke to resist the impact of external shocks and not crack or defect along the structure, with M40 value;The abrasion resistance of coke is the ability of coke to resist the external friction force and not to produce the surface glass to form the debris or powder.
Q: We want to barbecue, but will not give birth to charcoal, tossing more than an hour did not point, please help my brother and sister, thank you ~!
The first round of charcoal into a circle, the center of space, in the center of the fuel, such as paper, pay attention to the carbon holes are facing the center.
Q: What is charcoal? How is it made?
(1) the kiln, with mud kiln, filled with wood burning from the kiln door or door, the carbonization of wood in the kiln, volatiles escape and residual charcoal;(2) dry distillation, the distillation of wood. According to a quenching method of kiln, there are two kinds of black and white.
Q: What are the types of low rank coals? What is commonly used at present? Where can I buy
Lean: volatile and moderate adhesion, mainly used for coking. In the coking process may produce some of the glial, glial layer thickness of 6 - 10mm. Produced by coal coking coke, high mechanical strength and abrasion resistance is relatively poor. In addition to the part of high ash and high sulfur coal, coal and other coal blending coking often.
Q: What is the calorific value per kilogram of standard coal?
In addition, China has often energy converted into standard coal tonnage to 1 tons of straw, such as the energy equivalent to 0.5 tons of standard coal, 1 cubic meters of methane energy equivalent to 0.7 kilograms of standard coal.

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