How To Mine For Iron Ore

Jaw Crusher

As a classic primary crusher with stable performances, Jaw Crusher is widely used to crush metallic and non-metallic ores as well as building aggregates or to make artificial sand.

Input Size: 0-1020mm
Capacity: 45-800TPH

Materials:
Granite, marble, basalt, limestone, quartz, pebble, copper ore, iron ore

Application:
Jaw crusher is widely used in various materials processing of mining &construction industries, such as it is suit for crushing granite, marble, basalt, limestone, quartz, cobble, iron ore, copper ore, and some other mineral &rocks.

Features:
1. Simple structure, easy maintenance;
2. Stable performance, high capacity;
3. Even final particles and high crushing ratio;
4. Adopt advanced manufacturing technique and high-end materials;

Technical Specs

room and pillar al mining ppt

Room and Pillar Mining Method SlideShare

Oct 22, 2014 Room and Pillar Mining Method 1. Hassan Z. Harraz [email protected] 2014- 2015 This material is intended for use in lectures, presentations and as handouts to students, and is provided in Power point format so as to allow customization for the

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Room & Pillar Mining Method slideshare.net

Oct 31, 2019 Introduction  Room and Pillar mining method is one of the oldest existing mining methods.  A mining system in which the mined material is extracted across a horizontal plane, creating horizontal arrays of rooms and pillars.  Usually those room and pillars are uniform size  Pillars may or may not be removed after extraction.  Used for soft as well as hard rock mining and is

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Mining ppt 2014 SlideShare

Mar 29, 2014 Room and Pillar mining : • It is designed for flat bedded deposits of limited thickness. • It is used to recover resources in open stopes. • Three typical variations are : 1. Classic room and pillar 2. Post room and pillar 3. Step room and pillar 19.

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Lecture 4: Underground Mining SlideShare

Nov 02, 2011 2) Room (Bord)-and-Pillar mining (or continuous mining) method It is the most common supported pillar method, designed and used primarily for mining flat-lying seams, or tabular orebodies, or gently dipping bedded ore deposits of limited thickness (like coal, oil shale, limestone, phosphate, salt, trona, potash, and bedded uranium ores,). Room

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Método de room and pilar SlideShare

Mar 20, 2016 Método de room and pilar 1. ROOM AND PILLAR Es un método que se realiza mediante soporte por pilares para una explotación subterránea. La calidad de la roca de caja y mineral debe ser competente. En este método se diseña los pilares y los caserones para maximizar la recuperación de mineral. Los cuerpos mineralizados se extrae con potencias mayores a 10m y menores a 30 m y se

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(PPT) ROOM AND PILLAR dan LONGWALL batubara Iqbal DACHI

CIRI CIRI METODE ROOM AND PILLAR Produktivitas rendah Investasi alat kecil Rasio penambangan (mining recovery) sekitar 60 70 % Lebih fleksibel terhadap gangguan operasi, geologi dan peralatan Karena meninggalkan batubara dalam jumlah besar maka berpotensi terjadi swabakar Hanya dapat diaplikasikan pada ketebalan lapisan 1-4m Potensi

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room and pillar coal mining ppt mobilistico

Room And Pillar Coal Mining Ppt polrecreatienl 2 Room BordandPillar mining or continuous mining method It is the most common supported pillar method designed and used primarily for mining flatlying seams or tabular orebodies or gently dipping bedded ore deposits of limited thickness like coal oil shale limestone phosphate salt trona potash and bedded uranium ores

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Topic 9: Mining Methods Part V- Underground Mining

When the ore body is more or less horizontal, various forms of room and pillar stoping, cut and fill, [4] or longwall mining can take place. In steeply-dipping ore bodies,such as lodes of tin

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Room and pillar mining Wikipedia

Room and pillar (variant of breast stoping), is a mining system in which the mined material is extracted across a horizontal plane, creating horizontal arrays of rooms and pillars. To do this, "rooms" of ore are dug out while "pillars" of untouched material are left to support the roof overburden. Calculating the size, shape, and position of pillars is a complicated procedure, and is an area of active research. The technique is usually used for relatively flat-lying deposits, such as those that follow a particular stratum.

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Mining methods2 SlideShare

Oct 23, 2011 Room-and-pillar mining Drilling Rig LHD Truck Bolting Rig Scaling Machine Ventilation Drift Pillars Rib Pillar Transport Drift Stope Drift Room Room Room 6. Room-and-pillar mining Mechanized room-and-pillar mining of a thick ore body Non mechanized room-and-pillar mining

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(PPT) ROOM AND PILLAR dan LONGWALL batubara Iqbal

CIRI CIRI METODE ROOM AND PILLAR Produktivitas rendah Investasi alat kecil Rasio penambangan (mining recovery) sekitar 60 70 % Lebih fleksibel terhadap gangguan operasi, geologi dan peralatan Karena meninggalkan batubara dalam jumlah besar maka berpotensi terjadi swabakar Hanya dapat diaplikasikan pada ketebalan lapisan 1-4m Potensi

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Toward Pillar Design to Prevent Collapse of Room-and

United States since 1972 (Zipf, in press). Dismuke et al. (1994) describe a large pillar collapse in a major section of a room-and-pillar base metal mine. Figure 3 shows the collapse area. The failure began in four centrally located pillars and spread rapidly to include almost 100 pillars. Pillar width was 8.5 m, and room width was 9.7 m. Pillar

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(PDF) Underground Mining Methods: Room and Pillar method

Room-and-pillar mining method has a low recovery rate (a large percentage of ore remains in place underground ). In many room and pillar mines, the pillars are taken out sta rting at the farthest

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PPT Coal Mining PowerPoint presentation free to

Coal Mining The goal of coal mining is to economically remove coal from the ground. Coal is valued for its energy content, and since the 1880s is widely used to A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow id: 42d752-ZTVjY

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Topic 9: Mining Methods Part V- Underground Mining

When the ore body is more or less horizontal, various forms of room and pillar stoping, cut and fill, [4] or longwall mining can take place. In steeply-dipping ore bodies,such as lodes of tin

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Underground Mining Methods and Equipment

1.3. Room-and-pillar Mining Room-and-pillar mining is suitable for flat or nearly horizontal tabular deposits. If the ore bodies are moderately inclined (>30°) it is impractical to utilize tired mobile equipment, resulting in reduced productivity. If the competence of the hanging wall and/or the ore is

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Room and Pillar Mining an overview ScienceDirect Topics

The major partial mining method are strip pillar mining, Wongawilli strip pillar mining, room and pillar mining, and thickness-limited extraction. 1. Strip pillar mining. Strip mining technology is an effective measure to reduce the overburden strata and surface movement and deformation, and it is also one of the important measures in the system of “Green Mining.”

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room and pillar coal mining ppt

PPT Coal Mining PowerPoint presentation free to. world coal production In deep mining the room and pillar or bord and pillar method progresses along the seam while pillars and timber are left standing to support the mine roof Once room and pillar mines have been developed to a stopping point limited by geology ventilation or economics a supplementary version of room and

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What Is a Room and Pillar? (with picture)

Room and pillar mining may also be known as bord and pillar mining in some areas. Room and pillar is the oldest type of mining technique. Throughout history, miners have used a random room and pillar mining strategy to extract minerals from the earth. Workers would simply mine in certain areas and leave other areas intact, with little planning

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EVALUATION OF BORD AND PILLAR MINING SYSTEM IN

mining and its development correlate closely with cultural progress. Mining processes involve prospecting for ore bodies, analysis of the profit potential of a proposed mine, extraction of the desired materials. One of such methods is the Bord and Pillar method of mining. Bord and Pillar method of mining is one of the oldest methods of mining.

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CDC Mining Topic Ground Control Overview NIOSH

Feb 04, 2004 Toward Pillar Design To Prevent Collapse of Room-and-Pillar Mines Page last reviewed: 11/20/2019 Page last updated: 11/3/2015 Content source: National Institute for Occupational Safety and Health,Mining Program

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PPT Coal Mining PowerPoint presentation free to

Uses the room and pillar method. 11 Room and Pillar Method. Room and Pillar in the mines. 12 Room and Pillar Method. Mines are cut into rooms. Rooms are usually between 20-30 foot. 13 Short Wall Mining. Trucks receiving coal using short wall mining. 14 Short Wall Mining. Accounts for less that 1 of deep coal production in the world.

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Room and pillar mining Wikipedia

Room and pillar (variant of breast stoping), is a mining system in which the mined material is extracted across a horizontal plane, creating horizontal arrays of rooms and pillars. To do this, "rooms" of ore are dug out while "pillars" of untouched material are left to support the roof overburden.Calculating the size, shape, and position of pillars is a complicated procedure, and is an area of

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(PPT) ROOM AND PILLAR dan LONGWALL batubara Iqbal

CIRI CIRI METODE ROOM AND PILLAR Produktivitas rendah Investasi alat kecil Rasio penambangan (mining recovery) sekitar 60 70 % Lebih fleksibel terhadap gangguan operasi, geologi dan peralatan Karena meninggalkan batubara dalam jumlah besar maka berpotensi terjadi swabakar Hanya dapat diaplikasikan pada ketebalan lapisan 1-4m Potensi

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Mining ppt 2014 SlideShare

Mining ppt 2014 1. Presented by : Ajoy Saikia Department of Earth & Environmental Science KSKV KACHCHH UNIVERSITY.2014 2. Mining is the process of extracting minerals like gold, silver, copper, nickel and uranium (metallic) and salt, potash, coal and oil (nonmetallic) formations that concentrate naturally in the earth. 3.

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CHAPTER 11 Mining Technology Princeton University

mining. Longwall mining is also scheduled to be installed at other large underground oper-ations in the West. For these reasons, much of this chapter compares longwall mining with the dominant underground mining tech-nology in the West—room-and-pillar mining with continuous miners. Federal coal reserves in the Rocky Moun-

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(PDF) Underground mining Methods ResearchGate

Room-and-pillar mining method has a low recovery rate (a large percentage of ore remains in place underground ). In many room and pillar mines, the pillars are tak en out starting at the farthest

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Miner Bolter General Specifi cations P&H Mining

2 Joy 12CM30 miner bolter Komatsu Mining Corp. Group 3 12CM30 Features The Joy 12CM30 miner bolter is a single-pass machine designed for fixed roadway cutting widths with differing model options having drum extended widths of 4.8 or 5.0 or 5.2 or 5.4 meters. Two gathering head choices are available: plough or centrifugal loading arm (CLA).

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EVALUATION OF UNDERGROUND COAL PILLAR DESIGN

2.1. Bord and Pillar working method 6 2.2. Pillar Failure 7 2.3. Effect of mining method on pillar strength 8 2.4. Basic principles of pillar design 8 2.5. Pillar Strength Formulas 15 2.6. Factor of Safety 20 2.7. Size of pillars 21 2.8. Laboratory Techniques 22 3.

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Pillar design QueensMineDesignWiki

Stresses in pillar boundary must be sufficiently low that mining conditions are acceptable with reasonable levels of support. The following graph shows case histories from Canadian hard rock mines. If it is considered stable, the factor of safety is greater than 1.4 and if it is considered failure, factor of safety is less than 1 [7] .

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Room and pillar mines, Mining Techniques, Underground

The room and pillar system is used in mining coal, iron and copper ores mainly when found as manto or blanket sediments, stone and aggregates, talc, soda ash and potash. The key to the winning room and pillar mining is opting the optimum pillar size. If the pillars are so small the mine will fall down. If the pillars are so big then significant

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What Is a Room and Pillar? (with picture)

Room and pillar mining may also be known as bord and pillar mining in some areas. Room and pillar is the oldest type of mining technique. Throughout history, miners have used a random room and pillar mining strategy to extract minerals from the earth. Workers would simply mine in certain areas and leave other areas intact, with little planning

get price

Bord-and-pillar mining explained Illawarra Mercury

May 31, 2017 Bord-and-pillar mining is used in first workings of a deposit, and when irregularly shaped deposits, or sensitive environmental conditions, call for a lighter touch.

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Bord & Pillar Method Mining Coal

Aug 29, 2013 Applicability of bord and pillar mining method Following points should be considered for b/p mining Gradient of the seam: Flat seams are more suitable. Thickness of the seam: Seam thicker than 1.5 m and preferably 1.8-3 m thick are suitable for b/p mining method. Presence of stone and dirt bands: Seam should be free from stone and dirt bands.

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Mine Ventilation Systems

b) Room and pillar systems Figure 9-4 shows the two methods of ventilating a room and pillar development panel in a coal mine where multiple entries are driven. Figure 9-4a is the directional, or W-system, in which in take air courses are airways in the central

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03- Diseno de Room and Pillar Minería Minerales Free

Se desarrolla un room and pillar en la base y se comienza a excavar el techo de los caserones, luego se inyecta relleno hidrulico para poder acceder al siguiente corte Los pilares son cuadrados de 6.1 m Los caserones tienen una dimensin de 13.4x 9.1 m lo cual produce una recuperacin de 87% Muros son dejados para separar las unidades de

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Types of Mining Methods Sell Side Handbook

Mar 09, 2018 Some variations of the room-and-pillar mining method include post room-and-pillar mining and step room-and-pillar mining. Post room-and-pillar mining is a combination of room-and-pillar mining and cut-and-fill stoping mining, whereas step room-and-pillar mining is a variation of room-and-pillar mining in which the footwall of an inclined ore body is adapted for use of trackless

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