MERCHENTUS BLOG ARTICLES

  ECONOMICS OF DSI SANDWICH HIGH ANGLE CONVEYOR AND ITS COMPARISON WITH IPCC & DUMPER TRANSPORT IN OPENCAST By Shyamal Kumar Bag  DSI Sandwich High Angle Conveyor (HAC)  is a special type of conveyor system, where the material is hugged between the top and bottom conveyor belts and carried at any steep angle up to 90 degrees. The system is able to elevate material high in a limited horizontal space. This system can be imagined as an elevator in a high-rise, where one can easily reach the top floor in minimum time and without effort avoiding the staircase. Since DSI Snake HAC angle covers the material from both top and bottom, hence, there is no chance of dust generation during operation.  In deep opencast mine, the DSI HAC can be an ideal & most economic system for transport of material from pit-bottom to surface through the sidewall of mine (35 to 50 degree)as an alternative to dumper transport or in-pit conveyor system runs through haul road, where the grad...

Transport crawler for semi-mobile in-pit crushing system: Transport crawler is required to shift in-pit crusher at pit bottom in an opencast mine from time to time to maintain travel distance of dumper from coal face to in-pit crusher within 700 m to 1000 m. This is necessary to reduce the overall transport cost in a mine. Transport crawler is used to shift heavy weight in-pit crusher unit from one bench to another bench and also for relocating in opencast mine. Without such type of equipment, it becomes very difficult to shift the total crusher unit. This saves money and time. However, investment is high, hence, using such transport crawler infrequently may be uneconomic. However, incase of multiple no of crushers in a big opencast mine with long strike length, this equipment may be very useful, specially, incase if advance of coal face is fast. In India the transport crawler had been used at Ramagundum OC-II mine under SCCL, AP. This video includes the clipping of transport...

LIGNITE COAL MINING IN INDIA The four types of coal are peat,  lignite ,  bituminous , and  anthracite . Peat is often not listed as a type of coal since the use of it as an energy source is limited today. However, it's still a type of coal and can be used as an energy source Lignite , often referred to as  brown coal , is a soft, brown,  combustible ,  sedimentary rock  formed from naturally compressed  peat . It is considered the  lowest rank   of  coal  due to its relatively low  heat content . It has a carbon content around 60–70 percent. It is mined all around the world, is used almost exclusively as a fuel for  steam-electric power generation , and is the coal which is most harmful to health Lignite is brownish-black in colour and has a carbon content around 60–70 percent, a high  inherent moisture content   sometimes as high as 75 percent and an  ash  content r...