ppt 20171116 ensp· ensp2 Mainstream mechanical product introduction 2 Mainstream mechanical product introduction In longwall coal mining thcoal cut down by the shearer or the plow is transported by the amored face chain conveyor AFC which is laid across the full face tidth to the

plows are now the system of choice for longwall mining. The GH1600 plow, due to its higher installed power, can cut up to 2.3 m (91 in) when fitted with a portal stabilizing arm. In seams from 1.8 to 2.3 m (71 to 91 in), the choice between a plow or shearer depends largely on the geological conditions. But for any given height within

Plow systems from make the plow the mining system of choice for low and medium seams under 1.8 m (5.9 ft). With features offered only by , our plow systems exceed the production performance of shearers and offer future-oriented solutions for hard-coal mining.

When evaluating shearers and plows that are both considered high-performance, they drew the following conclusions: Below a face height of 1.8 meters (70.9 inches), the plow system is the better choice; Between 1.8 meters and 2.3 meters (70.9 and 90.6 inches), the choice depends on the longwall's specific geological and mining conditions

Dec 05, 2014· See the new GH800B plow system operating at the German Ibbenbüren mine – suiting the specific geological conditions of a coal seam with an average height of only 85 cm (33 in). The new ...

@article{osti_6515070, title = {Cowl-like scrubber for a long-wall shearer}, author = {Gillingham, G R}, abstractNote = {A cowl-like scrubber (20) for removing dust generated by a longwall shearer has a housing (21) adapted to be mounted on the shearer near a cutter drum. An air inlet (23) is provided in the housing to allow the dust-laden air to enter the scrubber (20).

May 11, 2017· to Present Latest Longwall Developments at Longwall USA . May 11, 2017 - Global Mining is returning to Longwall USA with digital displays of its complete line of longwall products—roof supports, shearers, plows, face conveyors, stage loaders, drive systems and automation technology to optimize operations.. will present advanced automation …

Longwall mining is a form of underground coal mining where a long wall of coal is mined in a single slice (typically 0.6–1.0 m (2 ft 0 in–3 ft 3 in) thick). The longwall panel (the block of coal that is being mined) is typically 3–4 km (1.9–2.5 mi) long and 250–400 m (820–1,310 ft) wide.

Longwall mining allows the most effective underground coal extraction method today. A large part of global coal reserves is located in seams between 1.5 m and 2.3 m thick; these are often high-quality reserves. The question is whether the use of a shearer or of a plow longwall system is economically better. Only a com-prehensive comparison of ...

Longwall shearers cut away the face of a coal seam in longwall mining operations by mounting over an armored face conveyor (AFC). They are equipped with cutting drums positioned against the coal seam by ranging arms powered by hydraulic rams. They can weigh more than 100 tons, travel at speeds up to 30 m/min, and cut away slices of coal seams up to 100 cm thick.

Two types of coal-cutting machines are used for longwall mining: shearers and pl ows. Shearers predominate . The p low is a much simpler machine, used mostly for relatively thin (42 inches or less ...

Longwall Systems - İdeal Makina. Joy complete longwall systems represent the ultimate solution for high-production longwall mining. Joy incorporates best-in-breed shearers, roof supports, face conveyors, stageloaders, crushers, and mobile belt tail pieces to deliver a complete longwall system that is in a class of its own.

Aug 16, 2019· The underground or open-pit methods are used for the extraction of mineral resources, each of which is divided into different categories. Coal is one of the mineral resources, which is exploited either by the surface or the underground methods. The long-wall mining is one of the methods for the underground coal mining. In this method, which is a mechanized one, some machines such as the ...

On February 16, 2012, the Polish coal mining company Lubelski Węgiel Bogdanka S.A. smashed the world record for daily production from a plow-equipped longwall, with an output of 24,400 tonnes of ...

Longwall Shearer EL3000. Your shearer is the most critical part of your longwall production process. That's why high-performance longwall operations demand shearers that deliver the highest productivity, availability and reliability. shearers were always designed to meet these demands. But has taken them to the next level.

Nov 06, 2014· has developed the ® GH800B Longwall Plow System, designed for mining very low coal seams at high rates. Building on the attributes of the proven GH1600 Plow System, the ...

Longwall shearers have been designed to combat coal dust and battle black lung. ... launch new longwall plows. has released a new longwall plow system for very low coal seams ...

Ever-higher requirements from mine operators have led to numerous significant developments in longwall mining technology over the past decades. Mining companies are looking for higher productivity, longer life, a higher degree of automation, full system solutions, increased safety and equipment suitable for extremely high or low seam applications.

----- EPA-670/2-7^-002 February 1974 FEASIBILITY STUDY OF A MEW SURFACE MINING METHOD "LONGWALL STRIPPING" By Henry F. Moomau Frank R. Zachar and Joseph W. Leonard Contract No. 68-01-0763 Program Element No. IBBQij-O Project Officer John J. Mulhern Mining and Land Modification Branch Office of Research and Development Washington, D.C. 2C460 Prepared For Office of …

Longwall Equipment Click Insert > Header and Footer to edit this text 11 • Relatively old longwall – 260m (853') • Extraction height 2.2m (86") • Roof supports - (DBT) with PM4 control system • Shearer - Eickhoff SL300 with latest controls including LASC SPMS • Rockwell PLC in power center • Fiber based Ethernet from surface to Main Gate power center

Longwall Top Coal Caving,Top Coal … Armored-face conveyors (AFC), Crusher, Bridge Stage Loader (BSL), Turbo Transmission Technology. Longwall Top Coal Caving (LTCC) is a special designed longwall mining method for very thick seams (thickness is more than 4.5m) where good quality coal is being left because "conventional" longwall equipment has not yet been designed to operate …

Fig. 3: Levels of comparison for the shearer and plow technologies The following text presents the results of a wide study comparing plows and shearers on multiple levels. Technical Economic Capital costs Technical capacity Operational costs Appropriateness of technology Service life Procedural Utilization degree Methane hazards conditioning

Pinnacle mine breaks world record for plow production. Cliffs Natural Resources' Pinnacle underground coal operation in West ia, USA, has experienced a number of firsts. It was the first longwall operation in the United States to use a plow rather than themore common shearer for its primary production machine.

plows like the GH800B and GH1600 Gliding Plow Systems offer world-leading features that other manufacturers cannot offer – and a cost per ton that far outstrips shearer performance in thin and medium seams, making them reliable, high-productivity longwall mining systems.

Other articles where Shearer is discussed: coal mining: Origins of longwall mining: …simple continuous machine called the shearer was introduced. Pulled along the face astride the conveyor, the shearer bore a series of disks fitted with picks on their perimeters and mounted on a shaft perpendicular to the face. The revolving disks cut a slice from the coal face as the machine…

plows are now the system of choice for longwall mining. The GH1600 plow, due to its higher installed power, can cut up to 2.3 m (91 in). It is then fitted with a portal stabilizing arm in hard coal only. In seams from 1.8 to 2.3 m (71 to 91 in), the choice between a plow or shearer …

Abstract. Longwall mining theory and practice in the USA is covered. Chapters discuss: US panel layout, strata mechanics, design considerations for panel layout, powered supports, design and application of powered supports, methods of coal extraction with the shearer and plow, coal transportation, methane and dust control, longwall face move, surface subsidence and instrumentation.

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Apr 30, 2010· Shearer working at Longwall Face 41. SHEARER WORKING AT LONGWALL FACE Capacity -2x375 Kw Thickness of 2.0 m to 4.5 m Web -0.63/0.85 Drum Dia -1.6 to 1.83m Length -10m

Underground - Longwall. Adapted to the mining challenges faced by our customers today, customized systems for longwall mining include hydraulic roof supports, high-horsepower shearers, automated plow systems and armored face conveyors with intelligent drive technology — controlled and supported by advanced longwall automation.

Your shearer is the most critical part of your longwall production process. That's why high-performance longwall operations demand shearers that deliver the highest productivity, availability and reliability. shearers were always designed to meet these demands. But has taken them to the next level.

Plows. Plow systems from make the plow the mining system of choice for low and medium seams under 1.8 m (5.9 ft). With features offered only by , our plow systems exceed the production performance of shearers and offer future-oriented solutions for hard-coal mining.

prox. 1.8 m an automated plow system can achieve definitely a higher productivity than a shearer. The plow longwall technology was implemented at the Prosper Haniel Mine in 1950s. The first high performance plow GH1600 plow system was applied at the Prosper Haniel Mine in last decade. This first panel with this plow sys-

Other articles where Longwall shield is discussed: coal mining: Longwall mining: …by mechanized, self-advancing supports called longwall shields, which form a protective steel canopy under which the face conveyor, workers, and shearer operate. In combination with shields and conveyors, longwall shearers or plows create a truly continuous mining system with a huge production capacity.

Plow systems extract segments of coal across the face of a coal seam during longwall mining procedures. They are used in lieu of a shearer on coal seam thickness less than 1.8 meters in height, and excavate coal in low and medium height coal seams. The plow consists of a static cutting head equipped with cutting picks or blades and is pulled by a heavy chain at speeds up to 300 feet per …