electrical drives used in coal mining

Motor Technology for Mining Applications Advances Coal

12/08/2009  Electric motors are an integral part of mining and mineral processing and, more recently, several trends have been taking place above and below ground. Historically, the mining business used a lot of DC motors. Steadily those motors are being replaced with AC motors, especially in underground coal mining applications. Likewise drive systems are evolving from fixed to variable speed. Similar to ...

Get PriceEmail contact

Electrical earthing in mines - HSE

Electricity is the main source of energy used in coal mines, due mainly to the high efficiency and convenience by which it is passed along cables. It is a medium that must be used properly and with caution to enable safety to be maintained properly as open sparking, shock and fire are the main hazards which may be encountered when faults occur. Correct connection of the enclosures of ...

Get PriceEmail contact

Electrical Safety in Mines

distribution and control panels used in underground coal mining applications. This was the beginning of a successful cooperation between the two com- panies which continued for decades thereafter. The IMD was offered as a compact stand-alone device to several large mining and industrial companies. CALOR EMAG, a company specializing in switchgear and control equipment The future needs a ...

Get PriceEmail contact

Colliery Equipment's Used in Mines (With Diagram)

The types are: 1. Coal Cutter 2. Power Loader 3. Controls 4. Conveyors 5. Telemetry 6. Gate-End Box 7. Overload Protection System 8. Multi-Control (Static Switch) Gate-End Box 9. Gate-End or In-Bye Substation. Colliery Equipment: Type # 1. Coal Cutter: A coal cutter is a low machine, being designed for stability and use in low slams where necessary. The motor unit of a coal cutter is usually ...

Get PriceEmail contact

Rockwell Automation drives Underground Mining operations

30/10/2014  Lastly, two more drives power centrifugal water pumps that run liquid through water jackets on the motors to keep them cool. This is critical because the constant churning of long-wall system motors creates tremendous heat. The pumps also help suppress the dust that is an unavoidable by product of coal mining.

Get PriceEmail contact

Battery electric vehicles are changing the face of mining ...

In addition to these advantages, there is an increasing move towards automation of mine machinery, and the use of remotely controlled mining robots, which favour the use of electric drives and battery-driven vehicles. Most underground mining operations currently use diesel-powered trackless mobile machines. BEVs are far more energy efficient ...

Get PriceEmail contact

Cables used in Mines: Distribution, Installation and Cable ...

Mining cables must therefore be robustly made to withstand the rough use they receive. Further, constant maintenance is required to ensure their safety and reliability. In fact, reliable and robust cables are most essential for efficient coal production. Moreover, these mining cables should conform to the earthing regulations, namely, that the conductance of the earthing conductor should be at ...

Get PriceEmail contact

37 Tips for Electrical Safety in Mines

Using electrical equipment on the job is always hazardous. According to a report prepared by the Fire Protection Research Foundation, there were 1,962 electrical-related workplace deaths during the ten-year period ending in 2013.Almost 200 of those occurred in mines. Compared with other industries, mining is among the most dangerous when it comes to working with electrical power.

Get PriceEmail contact

List of Equipment Used in Opencast Coal Mining Mining

List of equipment used in opencast coal mining are: 1. Bulldozer 2. Craper 3. Ripper 4. Tractor Shovel 5. Dipper Shovel 6. Stripper Shovel 7. Pull Shovel or Hoe 8. Dumpers or Tippers 9. Drag Line 10. Road Grader 11. Rock Drills. Opencast mining is the oldest method of excavating minerals but the mining operations have been mechanised by the use of heavy earth moving machinery during the last ...

Get PriceEmail contact

Coal mining - Wikipedia

Coal mining is the process of extracting coal from the ground. Coal is valued for its energy content and since the 1880s, has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production. In the United Kingdom and South Africa, a coal mine and its structures are a colliery, a coal mine is a 'pit', and ...

Get PriceEmail contact

CATU Electrical Safety Equipment For The Underground

As most coal seams are too deep for surface mining, underground mining techniques are required. Of the many different methods of deep coal mining, the most productive is coal face retreat mining, also known as longwall mining. This involves driving two parallel roadways into the coal seam, typically 280 to 350 metres apart and up to 3,000 metres in length, before connecting both roadways to ...

Get PriceEmail contact

Electrical Machines Used In Coal Mining

Electrical Drives Used In Coal Mining. Coal Mining Process Diagram Duty Cycle Of Mine Hoist. The motors used in Coal Mining Process Diagram can be classified into two groups. The motors in the first group are drives for mine auxiliaries such as compressors, pumps, etc. Read More. what machines are used in coal mining - JVC Gelderland . Machines Used in Coal Mining Coal mining has been ...

Get PriceEmail contact

Some Aspects of Electrical Power System Protection in ...

1. The Electrical Engineer is a “Service provider” to the Mining Engineer so that ever bigger toys can be run. 2. Robust electrical equipment/electrically powered equipment that is “used” by non electrical people. (Identified as fit for purpose.) 3. Continuous installation

Get PriceEmail contact

U.S. Bureau of Mines/NIOSH Mining Electrical Safety ...

cal review of the use of electrical power in mining and an examination of the associated shock, ire, and explosion hazards. These hazards were the impetus for government intervention to improve the safety of U.S mineworkers. The evolution of electrical power systems and equipment in mining then serves as a backdrop for a review of continued electrical safety research. The paper concludes with ...

Get PriceEmail contact

CDC - Mining - Electrical Equipment Explosion Protection ...

“Explosion protection” refers to techniques used to minimize the potential for electrical and electronic equipment to create an ignition while operating in a hazardous location (HAZLOC). A HAZLOC refers to atmospheres containing flammable gases or vapors and/or combustible dusts. In particular, U.S. coal mines and other gassy mines are required to use equipment in certain areas of the mine ...

Get PriceEmail contact

Automation in U.S. longwall coal mining: A state-of-the ...

01/03/2019  Since the head drive frame is used to transfer the produced raw coal to the stage loader, the tail drive frame must control the chain tension. A tensionable tail drive using a double-acting hydraulic cylinder was introduced in early 1990s for manually and later automatically adjusting the tension as needed. A tail drive with smart chain tension self-adjusting system was installed in the 2010s ...

Get PriceEmail contact

How do we get coal? New ... - Mining-Technology

Coal is one of the cheapest and most reliable sources of energy, and as demand soars new technology will be crucial. With global demand for coal widely expected to rise over the next 20 years, Dr Gareth Evans finds out how a range of new technologies will help the coal mining industry meet that need - from both existing and less conventional sources.

Get PriceEmail contact

Commonly used mining techniques to extract coal IEA ...

25/01/2018  Coal has been a prominent source of power generation for more than hundred years now. It is also widely used in many other industries. Coal also serves as fuel in the extraction of iron from iron ore and for the production of cement. Due to a rise in demand for coal, many mining techniques have evolved to extract the fossil fuel. A large-scale mining of coal requires the use of draglines ...

Get PriceEmail contact

Coal mining - Coal transportation Britannica

Coal mining - Coal mining - Coal transportation: There are several methods for moving prepared coal from the mine to the markets. The cost of transport can be substantial and can account for a large fraction of the total cost to the consumer. Rail transportation is by far the most common mode of hauling coal over long distances. Roadbed and track requirements and large fixed investment in ...

Get PriceEmail contact

The Coal Truth: Will the Coming Generation of Electric ...

04/05/2010  The Coal Truth: Will the Coming Generation of Electric Cars Just Be Coal-Burners, Once Removed? Some analysts expect that existing grid capacity may be enough to power U.S. electric

Get PriceEmail contact

Computer System for Electric Drives Fault Diagnosis of ...

The analysis of the technical state of the electric drive by a set of attributes is performed in a special analyzer, built on the basis of pre-trained artificial neural network. The results of these studies support the possibility of creating a diagnostic system for the main electric drives of mining shovels using the estimation methods and apparatus of artificial neural networks.

Get PriceEmail contact

Automation in U.S. longwall coal mining: A state-of-the ...

01/03/2019  Since the head drive frame is used to transfer the produced raw coal to the stage loader, the tail drive frame must control the chain tension. A tensionable tail drive using a double-acting hydraulic cylinder was introduced in early 1990s for manually and later automatically adjusting the tension as needed. A tail drive with smart chain tension self-adjusting system was installed in the 2010s ...

Get PriceEmail contact

Coal Gas Coal Mine Methane Coal Seam Methane

Coal Bed Methane (CBM) or Coal Seam Methane (CSM) is primary coal seam gas collected from unmined coal beds. These coal seams are drilled down into, releasing the associated gas which is extracted and can be used to generate electricity. CBM consists of over 90% methane and can be harvested independently of coal mining in some locations. The gas composition is normally stable,

Get PriceEmail contact

Conveyors in Mining - International Mining

“Electrical equipment, such as power distribution, drives and switchgear as well as the control system and auxiliary components need to be properly protected from the harsh conditions [of ] mining. Dust, shock and vibration, extreme temperatures and/or high altitudes require a containerised E-house which is fully air conditioned and vibration proof. It is difficult to create a ‘standard ...

Get PriceEmail contact

The external costs of coal mining: the case of collieries ...

stages in the life cycle of coal-based electricity sup-ply, including coal mining, processing and trans-portation (Bjureby et al., 2008; Mishra, 2009; Epstein et al., 2011). The consideration of all stages, instead of focusing only on coal combustion, is paramount to revealing the true cost of coal-based electricity generation and is necessary to inform public policy and private investment ...

Get PriceEmail contact

Machines Used in Coal Mining Career Trend

28/11/2018  Coal mining has been performed since the arrival of the Industrial Revolution in the mid-18th century. Coal is used as a fuel primarily for steam-generated electrical power plants, as well as being a component of certain industrial applications, such as steel manufacturing. Coal is widely distributed over the planet, either as underground seams which must be mined, or as deposits located ...

Get PriceEmail contact

What Makes Coal Valuable? 5 Things That Drives Its Price ...

18/03/2021  The steam powers a turbine that, along with an alternator, generates electricity. Steel Industry: A form of coal known as coke or metallurgical coal is used to smelt iron ore and produce steel. Specialty high-temperature ovens bake coal to produce coke. Coal used for this process must be low in sulfur and cleaned very well. The final product is ...

Get PriceEmail contact

Modern experience of low-coal seams underground

01/11/2018  In complex mining and geological conditions of coal seams occurrence, increase of energy effectiveness of coal mining is a major priority. At the mines of the Western Donbas today, both Ukrainian and foreign equipment are operated. The use of foreign mechanised complexes made it possible to increase the load on the productive workings from 1000–1500 tons per day to 3000–3500

Get PriceEmail contact

Kentucky Coal Heritage - Mining Equipment from 1940's

Equipment For Coal And Metal Mines: Universal Cutters. Series 29 for cutting any place in the seam, including shearing. Furnished for track operation, or mounted on crawlers or pneumatic tires for use in trackless mines. Shortwall Cutters. Series 35 various types either 35 H.P. or 50 H.P. for conveyor mining or equipped with trucks.

Get PriceEmail contact

Copyright © 2020.Company name All rights reserved.SiteMap