XLei 339B Ankle Boots Leather Antacite Leather Elastic Studs Embroidery - Shoe Size 37 Color Leather

£9.9
FREE Shipping

XLei 339B Ankle Boots Leather Antacite Leather Elastic Studs Embroidery - Shoe Size 37 Color Leather

XLei 339B Ankle Boots Leather Antacite Leather Elastic Studs Embroidery - Shoe Size 37 Color Leather

RRP: £99
Price: £9.9
£9.9 FREE Shipping

In stock

We accept the following payment methods

Description

Structurally, anthracite shows some alteration by the development of secondary divisional planes and fissures so that the original stratification lines are not always easily seen. The thermal conductivity is also higher; a lump of anthracite feels perceptibly colder when held in the warm hand than a similar lump of bituminous coal at the same temperature. [5] Statistics report: Coal information - overview" (PDF). International Energy Agency. 2020. pp.7–8 . Retrieved 13 November 2021. Bituminous coal is the name for traditional house coal. It is the most popular and abundant coal, and has been used as a domestic fireplace fuel for generations. It’s a cheap solid fuel which is easy to ignite, both of which are key reasons it is so heavily used. Due to its relatively high energy output and availability in many regions worldwide, bituminous coal has been widely used for electricity generation and industrial processes such as steel production. Anthracite coal Vs. bituminous coal – Key differences Characteristic

John Nelson, W. (October 1987). "Coal deposits of the United States". International Journal of Coal Geology. 8 (4): 357–361. Bibcode: 1987IJCG....8..355J. doi: 10.1016/0166-5162(87)90072-3. a b Mobley, R. Keith (2001). "Coal and ash". Plant engineer's handbook. Boston: Butterworth-Heinemann. p.21/339. ISBN 9780080539041 . Retrieved 10 November 2021. Jeddi, Samir; Schönfisch, Max; Alvarez, Carlos Fernández (2019). Coal 2019: Analysis and forecast to 2024 (PDF). International Energy Agency. pp.62–63 . Retrieved 7 November 2021.Not to be confused with the German Steinkohle [5] or Dutch steenkool which are broader terms meaning all varieties of coal of a stonelike hardness and appearance, like bituminous coal and often anthracite as well, as opposed to lignite, which is softer. a b Boggs, Sam (2006). Principles of sedimentology and stratigraphy (4thed.). Upper Saddle River, N.J.: Pearson Prentice Hall. p.231. ISBN 0131547283. Thus bituminous coal is divided into high-, medium-, and low-volatile categories based on fixed carbon content, and high-volatile bituminous coal is further subdivided by energy content. Anthracite coal is the highest-quality coal, with high carbon content and low moisture. It burns efficiently, producing intense heat and minimal smoke, making it ideal for open fires. Bituminous coal is a mid-grade coal with higher carbon content than others but produces more emissions. Choose anthracite for cleaner and longer-lasting open fires. What is anthracite coal? Peat is mostly a mixture of cellulose, hemicellulose, and lignin that originally made up the woody tissue of the plants. [24] Lignin has a weight composition of about 54% carbon, 6% hydrogen, and 30% oxygen, while cellulose has a weight composition of about 44% carbon, 6% hydrogen, and 49% oxygen. Bituminous coal has a composition of about 84.4% carbon, 5.4% hydrogen, 6.7% oxygen, 1.7% nitrogen, and 1.8% sulfur, on a weight basis. [10] This implies that chemical processes during coalification remove most of the oxygen and much of the hydrogen, leaving carbon, a process called carbonization. [25]

They also differ in usage from standard grade anthracite (used mainly for power generation), being employed mainly in metallurgy as a cost-efficient substitute for coke in processes such as sintering and pelletising, as well as pulverised coal injection (PCI) and direct injection into blast furnaces. They can also be used in water purification and domestically as a smokeless fuel. Bituminous coal was once extensively used for home heating in the US. However, bituminous coal is a relatively dirty fuel. The reduction in the use of bituminous coal between 1945 and 1960 is estimated to have saved at least 1,923 lives of all ages and 310 infant lives per winter month. [61] Bituminous coal quality is improved with floatation methods, which increase the fraction of vitrinite to yield a cleaner-burning product. [62] Ashley, George H. (December 1945). "Anthracite Reserves". PAGS Progress Reports and Bulletins. No. 130. Archived from the original on 2020-08-09 . Retrieved 2019-05-16. As carbonization proceeds, aliphatic compounds (carbon compounds characterized by chains of carbon atoms) are replaced by aromatic compounds (carbon compounds characterized by rings of carbon atoms) and aromatic rings begin to fuse into polyaromatic compounds (linked rings of carbon atoms). [29] The structure increasingly resembles graphene, the structural element of graphite. This is accompanied by an increase in vitrinite reflectance, used to assess coal rank. [5]Report of the United states coal commission.... (5 vol in 3; 1925) Official US government investigation. online vol 1-2 Bituminous coal is used primarily for electrical power generation and in the steel industry. Bituminous coal suitable for smelting iron ( coking coal or metallurgical coal) must be low in sulfur and phosphorus. It commands a higher price than other grades of bituminous coal (thermal coal) used for heating and power generation. Brownfield, M. E.; Steinshouer, D.W.; Povarennykh, M.Y.; Eriomin, I.; Shpirt, M.; Meitov, Y.; Sharova, I.; Goriunova, N.; Zyrianov, M.V. (2001). "Coal Quality and Resources of the Former Soviet Union ¯ An ArcView Project". U.S. Geological Survey Open-File Report. Open-File Report. 01–104. doi: 10.3133/ofr01104 . Retrieved 13 November 2021.

Safety – It is the safest fuel to use, maintain & burn, using low maintenance and self-serviceable burners. There are no concerns of chimney fires, leaking fuels or gases and is safely stored for extended periods. Andriesse, J. P. (1988). "The Main Characteristics of Tropical Peats". Nature and Management of Tropical Peat Soils. Rome: Food and Agriculture Organization of the United Nations. ISBN 92-5-102657-2. The consistent warmth produced by anthracite coal and its minimal ash waste means Welsh Anthracite is the cleanest and one of the most dependable of the smokeless solid fuels.

Virtually all classification systems use the percentage of volatile matter present to distinguish coal ranks. In the ASTM classification, high-volatile A bituminous (and higher ranks) are classified on the basis of their volatile matter content. Coals of lower rank are classified primarily on the basis of their heat values, because of their wide ranges in volatile matter content (including moisture). The agglomerating character of a coal refers to its ability to soften and swell when heated and to form cokelike masses that are used in the manufacture of steel. The most suitable coals for agglomerating purposes are in the bituminous rank. The Groundhog Anthracite Deposit, located in British Columbia, Canada, is the largest previously undeveloped anthracite deposit in the world. It is owned by Australian publicly listed company Atrum Coal and has 1.57 billion tonnes of high grade anthracite. [30]



  • Fruugo ID: 258392218-563234582
  • EAN: 764486781913
  • Sold by: Fruugo

Delivery & Returns

Fruugo

Address: UK
All products: Visit Fruugo Shop