Longwall mining is a highly productive underground mining process in which a panel or block of coal, sometimes 700 feet wide and a mile or more long, is completely extracted. The working are is protected by a moveable, powered roof support system. Longwall accounts for about 48% of total underground coal production. Question 8:
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Long Answer Questions: (5 Marks) 22. Explain in detail the products of coal. Ans: Coal is processed in the industry to get some useful products such as coke, coal tar and coal gas. (a) Coke: Coke is almost a pure form of carbon. It is dark in colour.
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UN climate summit begins in Dubai on 30 November and will readdress finance for loss and damage For almost three decades, world governments have met nearly every year to forge a global response to ...
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Minimising use of water for processing by reusing and recycling it. Smoke can be reduced by using oil or gas instead of coal in factories. Almost all machinery can be redesigned to increase energy efficiency and reduce noise. Question 37. Which is the most abundantly available fossil fuel in India? Mention its different forms. (2015 OD, 2014 OD ...
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The LFC process consistently produced 250 short tons/day of PDF and 250 barrels/day of CDL from 500 short tons of runofmine coal per day. The PDF contains percent sulfur with a heat content of 11,100 Btu/lb (compared with percent sulfur and 8,300 Btu/lb for the feed coal) [ 1 ].
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Transporting coal Coal can be transported from mines and processing plants to consumers in several different ways: Conveyors, trams, and trucks move coal around mines, short distances from mines to consumers close to the mines, or to other modes of longdistance transportation. How does coal get out of the ground?
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The coal mining industry has seen a steady rise in the past few years. According to estimates, the global coal market is forecasted to grow at a compound annual growth rate of percent from 2019 to 2023. Starting a coal mining business involves obtaining the necessary permits, licenses, and financial resources.
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Basic Coal Preparation for Plant Operators. The course is presented over a period of 7 weeks, 2 days per week, and consists of theoretical as well as practical training. The course is mainly aimed at training plant operators in all basic principles of mineral processing. It provides plant operators with the necessary skills to master all ...
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The volume of waste from processing coal can be substantial; 35 ... Shortterm Energy Outlook Report Coal [4] Energy Information Administration. February 10, 2016. mining and exploration investment declined 35% in 2015 [5] Energy Information Administration. July 7, 2015.
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Underground mining, we also call deep mining. It is a process that extracts coal from deep below the Earth's surface—may be as far as 300meters. For coal mining, you need use many coal mining machines like the conveyor belt. This is a complicated process and you are better to find a professional team to build the coal mining plant.
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Physical and chemical changes took place as a result of heat and temperature extracting out all oxygen leaving the plant layers with carbonrich content, thus resulting in the formation of coal over a period of time. Also, read Forests. Types Of Coal. Coal is a readily combustible rock containing more than 50% by weight of carbon.
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Engineering Chemistry Questions and Answers Coal 1. This set of Engineering Chemistry Multiple Choice Questions Answers (MCQs) focuses on "Coal 1". 1. What is the time required for the formation of young brown coals? a) 10 7 years. b) 3×10 8 years. c) 3×10 9 years.
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Ans: Followings are the correct matching for the given items (a)(iii) (b)(iv) (c)(i) (d)(ii) Long Answer Questions. 27. Name the products obtained and their uses when coal is processed in industry. Ans: Following products can be obtained by processing coal in the industry (i) Coal tar used in making roads.
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Study with Quizlet and memorize flashcards containing terms like Most of the world's energy and mineral resources derive from a. solar materials and processes. b. geologic materials and processes. c. hydrosphere materials and process. d. biological materials and processes., Most of the world's energy supply comes from ________. a. fossil fuels b. wind c. nuclear power d. water, Which of the ...
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Question. The processing of raw coal involves "washing," in which coal ash (nonorganic, incombustible material) is removed. The article "Quantifying Sampling Precision for Coal Ash Using Gy's Discrete Model of the Fundamental Error" (Journal of Coal Quality, 1989:3339) provides data relating the percentage of ash to the density of a ...
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Ans. Coal is a black or brownishblack sedimentary rock that is primarily composed of carbon. It is formed from the remains of vegetation that lived and died millions of years ago. Over time, the vegetation was buried and subjected to high pressure and heat, which transformed it into coal. 2.
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Fig. : A coal mine Coal Gas Coal gas is obtained during the processing of coal to get coke. It is used Coal gas was used for street lighting for the first time in London in 1810 and in New York around 1820. Now a days, it is used as a source of heat rather than light. These days, bitumen, a petroleum product, is used in place of coaltar
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The course is aimed at more senior mineral processing personnel, and provides the student with a wider and more advanced scope regarding Coal Preparation and utilisation in general. It also prepares the student to play a more meaningful role in the management of the ore beneficiation environment. It is presented during four 3week study schools ...
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Answer: 1. This picture shows shore drilling of oil. 2. Deep wells bored to take petroleum and natural gas out is called drilling. Map Skills Class 8 Geography Chapter 3 Mineral and Power Resources. Question 1. On an outline Map of the World mark the following: (i) Countries of Asia with large iron deposits.
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Free download in PDF Mining Engineering General Knowledge Multiple Choice Questions(MCQs) Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
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Answer: Coal when processed in industry gives coke, coal tar and coal gas. Coke is used in the manufacture of steel and in extraction of many metals. Coal tar is used as starting material for manufacturing various substances such as synthetic dyes, drugs, explosives, perfumes, paints, etc. Coal gas is used as a fuel. chevron right.
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The coal delivered from the mine that reports to the coal preparation plant is called runofmine, or ROM, coal. This is the raw material for the CPP, and consists of coal, rocks, middlings, minerals and contamination. Contamination is usually introduced by the mining process and may include machine parts, used consumables and parts of ground ...
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Coal and Petroleum Class 8 Extra Questions Very Short Answer Type. Question 1. Name some renewable sources of energy. Water, wind, solar. Question 2. Give some examples of fossil fuels. Coal, petroleum, natural gas. Question 3. Name the elements present in coal.
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These NCERT Solutions for Class 8 Science Chapter 5 have answers to questions on coal, petroleum and natural gas and other fossil fuels, the formation of fossil fuels, types of fossil fuels, uses of fossil fuels and limitations of using fossil fuels. These NCERT Class 8 Solutions are prepared systematically by experienced teachers, which will ...
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Answer: Flame is a region where the burning or combustion of gaseous substances take place. Question 13. Define fuel. Answer: Those substances which provide energy on burning are called 'fuels';, coal, petroleum, LPG, etc. Question 14. Give two examples each of solid fuels, liquid fuels and gaseous fuels. Answer:
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(c) The black, thick liquid with an unpleasant smell is known as coal tar. (d) During the processing of coal to get coke, coal tar and coal gas are also obtained. (e) The process of separating the various constituents of petroleum is known as Fractional Distillation. (f) Excessive burning of fossil fuels is a major cause of Global Warming.
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Transporting coal. Coal can be transported from mines and processing plants to consumers in several different ways: Conveyors, trams, and trucks move coal around mines, for short distances from mines to that are consumers close to the mines, or to other modes of longdistance transportation. Trains transport nearly 70% of coal deliveries in the ...
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Chemistry Fuels and Combustion Important Questions and Answers: Fuels and Combustion. 1. How fuels are classified. Give one example for each. Based on Occurrence 2 Types. Primary Fuels It occurs in nature such as. Ex: Coal, Crude oil, Natural Gas. Secondary Fuels It is derived from primary fuels.
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Coal is a black or brownishblack sedimentary rock that can be burned for fuel and used to generate is composed mostly of carbon and hydrocarbons, which contain energy that can be released through combustion (burning). Coal is the largest source of energy for generating electricity in the world, and the most abundant fossil fuel in the United States.
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Coal and Petroleum Class 8 Extra Questions Short Answer Type 2. Question 1. Write any two uses of coke. Answer: Two uses of coke are : ... The coal gas is used as a fuel ip the coal processing plant and in many industries situated near the coal processing plants. (ii) Earlier it was used for lighting but nowadays it is used as a source of heat. ...
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First, put vinegar and water in equal amounts and then run the boiler. This will swell the rusting from inside due to the steam formation and thus clean with hand by switching off the boiler. Q. How to bleed a boiler. Ans. Boiler flushing or boiler bleeding is a process of cleaning out the boiler inside and breaking out the jam inside the pipes.
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Mine mouth coal for power plants undergoes very little to no processing, while metallurgical or thermal coal for export usually undergoes washing to remove rock particles. Most coal mines that mine coal for power plants simply dig it up and send it to the power plant for burning. Very little processing. Some times a mine might blend low grade coal with higher grade coal to ensure a constant ...
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A material supplier from Belgium would like to produce limestone powder for his custome...
India is rich in various mineral resources and it is an important mineral processing market
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