Deccan Mechanical & Chemical Industries Pvt. Ltd. Bhosari, Pune, Maharashtra

  • Weigh Feeder

    Weigh Feeder

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    Demech has entered into technical collaboration with Hitachi Power Europe GmbH (HPE), Duisburg, Germany; to manufacture Gravimetric Coal Feeders. This gives Demech the unique advantage to supply Gravimetric Coal Feeders using the proven and reliable designs of Hitachi Power Europe GmbH.

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  • wear resistant casting

    wear resistant casting

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    This unique characteristic of CHROMCAST enables it to withstand heavy impact along with high abrasion in trying conditions in the industry.Hardness of 60-65 HRC (650- 700 BHN).Bond strength of 250 MPA,Carbide volume 30- 50%,Material is confirming to ASTM A 532.

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  • wear plates

    wear plates

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    CHROMAX wear plate by DEMECH is a composite plate, manufactured by a unique process in which a uniform layer of highly wear resistant carbides is deposited on a carbon steel base. Very hard carbides are suspended in a tough wear resistant matrix. It is the concentration & uniform distribution of carbide structure that gives CHROMAX Wear Plate its unique wear resistant & life prolonging characteristics.

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  • volumetric feeder

    volumetric feeder

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    Volumetric coal feeder is basically a drag-chain en-masse conveyer with an externally adjustable bed height controller. The cross-section area at the bed height controller and the speed of the bed of material gives the volumetric measurement of the coal. The variation in coal flow is achieved by either adjusting the coal bed or varying the chain speed using variable frequency drive.These feeders always have a horizontal profile with capacities upto 120 TH and lengths of even 25 meters.The other construction is similar to Chain Feeders with additional safety features as per the requirements of customer. The chains used by DEMECH are Drop forged chains, with single strand or double strand construction as per the capacity requirements.

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  • Tight Shut off Valve

    Tight Shut off Valve

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  • slide gate valve

    slide gate valve

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    DEMECH Slide Gate Valves are designed to provide a quick acting isolation valve unit that can be installed into a bulk handling flow path to stop material flow. DEMECH Slide gate valves are simple and compact in design, robust in structure, excellent in technology and are easy to install. Slide gate valves are designed to shut off product flow from outlets of storage bins, silos, conveyors, and other discharge points handling dry bulk materials.

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  • Screw Elevator

    Screw Elevator

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    Standard screw conveyors are made out of carbon steel or stainless steel depending on the operating conditions.Sizing of screw conveyor and pitch of flight is determined with the reference to CEMA standards. Intermediate hanger bearings are provided for long conveyors for the screw to maintain allowable sag in the rotating member.Proper selection of angular speed for the Screw conveyor is critical in order to avoid wobbling effect during operation.The tough filling factor is selected according to nature of material and also with reference to CEMA standard with typically value of around 30%, however, the drive power rating is calculated based on 100% filling factor. For high temperature application a jacketed trough and box type flights are provided with circulating cooling water through, shaft & box flights. The quantity of cooling water depends on the properties & temperature of conveying material.

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  • Screw Conveyor System

    Screw Conveyor System

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    Screw conveyors are used to convey the material continuously with the help of a rotating helical screw blade (known as flights) by shear and tumbling effect inside a U shaped trough or a round tube. They are generally used for handling fines of coal, crushed material, powders, cement, chemicals etc. The periphery of leading side of the helix is provided with hard face welding for handling abrasive material.

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  • Rotary Air Lock Valve

    Rotary Air Lock Valve

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    DEMECH provides a complete range of Rotary Airlocks suitable for air lock applications ranging from gravity discharge of filters, rotary valves, cyclone dust collectors, and rotary airlock storage devices to precision feeders for dilute phase and continuous dense phase pneumatic conveying systems.

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  • Rotary Air Lock

    Rotary Air Lock

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    DEMECH provides a complete range of Rotary Airlocks suitable for air lock applications ranging from gravity discharge of filters, rotary valves, cyclone dust collectors, and rotary airlock storage devices to precision feeders for dilute phase and continuous dense phase pneumatic conveying systems. Rotary Air lock valve is used in Bulk Handling System for free flowing dry powder, granular, crystal or pellets form of material. It is usually fitted below Chain conveyor Screw Conveyor Hopper Silos Bag filter ESP Bins etc.

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  • Paddle Mixer

    Paddle Mixer

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    Mixer conveyor is known in the industry by various names such as Paddle mixer, Ash Mixer, Pug Mill, Unloader etc. DEMECH Mixer Conveyors find applications in many industries. This equipment is the perfect solution for pollution control as it effectively blends dust - recovered from ESP, Mechanical collectors, bag houses, Silos etc.- with various liquids, thus allowing transport but effectively controlling the particulate matter escaping into the air.

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  • Paddle Conveyor

    Paddle Conveyor

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    DEMECH Mixer conveyors are manufactured in sturdy Carbon Steel or Stainless Steel construction with suitable liners to suit the properties of material to be handled. The mixer conveyors have twin counter-rotating shafts, with adjustable paddle rows on each shaft.The top covers are removable giving complete access to the internals. The transmission gears train can be easily lubricated.DEMECH can design and supply mixer conveyors of capacities from 1 TPH to 100 TPH.

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  • Material Handling Elevators

    Material Handling Elevators

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    DEMECH supplies Bucket Elevators for vertically transporting various free-flowing bulk materials from dust to material having particles up to 30 mm.DEMECH supplies centrifuge or continuous types of Bucket Elevators with single and double strands of chains.Conveying buckets are mounted on chain. Conveyor speed is selected based on the type of discharge. Drive platform is provided at the top near drive end casing. For maintenance purpose an inspection window is provided at the boot section of bucket elevator.

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  • Liner Plates

    Liner Plates

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    "CHROMAX" PLATE has hardness range of 55 to 65 HRC (Rockwell C Scale) depending on grade. Hardness is uniform throughout the overlay thickness."CHROMAX" PLATE consists of up to 60% by volume of Chromium rich carbides in an Iron matrix."CHROMAX" PLATE offers unparalleled resistance to high stress abrasion and prolonged impact loading at a high temperature up to 700°C. Cold abrasion tests have shown an improvement in wear resistance at 30 times that of mild steel. 3 to 1 improvement over traditional wear resistant materials such as Ni-Hard. Normal conditions show 12 to 1 improvement over heat treated Manganese Steel Hot abrasion tests have shown 20 to 1 improvement over mild steel.

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  • lignite

    lignite

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    Demech has entered into technical collaboration with Hitachi Power Europe GmbH (HPE), Duisburg, Germany; to manufacture Gravimetric Coal Feeders. This gives Demech the unique advantage to supply Gravimetric Coal Feeders using the proven and reliable designs of Hitachi Power Europe GmbH.

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  • Industrial Dampers

    Industrial Dampers

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    Demech has started manufacturing of Industrial Flue gas dampers and having state-of-art manufacturing facility. Demech has manufactured industrial dampers for power plant, gas based and diesel generation based power plants, waste heat recovery system in cement plant etc. applications. Technical Details

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  • Flap Valves

    Flap Valves

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    Double Cone Flap valves are used for controlled feeding as well as achieving air lock sealing. These valves consist of two independent Cone Flap valves mounted one upon other with their opening and closing alternated and synchronized to ensure that only one valve opens at a time. DEMECH manufacture these valves to suit the opening sizes and required through-put rate. The through-put of these valves depend on the holding volume of the upper valve chamber and the rate of operations.

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  • Drag Chain Conveyor

    Drag Chain Conveyor

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    DEMECH have been one of the pioneers in India to manufacture and supply En-Masse & Drag Chain Conveyors. Slow moving chains in these conveyors influence the material to move gently through a closed duct in a horizontal or even in steeply inclined profiles. These can handle virtually any type of bulk material in an environmentally safe way due to its dust-tight and spill proof, totally enclosed construction. These conveyors are heavy duty and of rugged construction

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  • Double Cone Valve

    Double Cone Valve

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    DEMECH has supplied Flap valves having inlet size from 200 to 500 mm square. Whereas Cone valves upto of 400 mm diameter have been supplied.The valves need power to open but are closed naturally by counter-weights. The valves are fabricated from mild steel plates with access cover to inspect and attend to the Cone or Flap. Due to low and controlled speed, wear due to abrasive material is minimal. The entry and exit of chamber can be provided with liners for longer life. Cone and seat are casted in suitable wear resistant material to take care of abrasion. The flaps are fabricated either with replaceable liners of hard material or they are manufactured from hard plates like Sailhard or Hardox.The valves are either driven by electric motors or pneumatic hydraulic cylinders. To achieve the alternate and sequential operation, the motor driven valves have specially custom designed cam arrangement and the cylinder operated valves have a sequential timer based controller.

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  • Dome Valve

    Dome Valve

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    This valve is used for dense phase pneumatic handling system, primarily above the Pressure vessel. In open Position, Spherical Dome is completely out of the conveying path, hence there is no obstruction for material flow. Spherical dome is protected from direct contact with the conveying material.

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  • Coal Feeders

    Coal Feeders

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    Gravimetric Coal Feeder manufactured by Demech is essentially a belt conveyor which measures the amount of coal, in terms of weight, being conveyed fed to the pulveriser. The feed rate is computed from load cell signal and belt speed signal collected from the load cells strategically mounted below the belt and the Hollow shaft sensor mounted on the tail pulley of the belt conveyor in the weigh controller.The control and instrumentation features are achieved by combination of weigh controller, VFD and PLC-HMI housed in local & remote control panel.

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  • chain elevators

    chain elevators

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    DEMECH Chain conveyors are custom designed to suit the bulk material to be handled. For given operating parameters like speed, type of flights etc. For a chain conveyor, it is the material properties which decide whether the conveying will be with 'En-masse' effect or 'Drag' effect. DEMECH's vast experience in this field ensures that the conveyor is designed to operate at optimum efficiency by proper selection of speed, type of chain & flight etc.The conveyor profiles are generally as per the following diagrams but some additional variants can be manufactured & supplied to suit site conditions.The conveyors are designed with single or multiple numbers of inlet and discharge openings provided at the required locations along the conveyor path. The conveyors are manufactured according to application using Carbon Steel, Stainless Steel or other such material with various types of lining.DEMECH chains are made of alloy steel drop forgings. They are machined and heat treated to achieve desired strength and hard outer surface to withstand wear due to abrasion.Sprockets suitable for the forged chains are also manufactured by DEMECH in Carbon Steel and Alloy Carbon Steel which are case hardened for longer life.

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  • Ash Slurry Disposal System

    Ash Slurry Disposal System

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    Flow quantity of Slurry and pressure required are the basic parameters required for designing the system. However, these two parameters in turn depend on many other conditions like rate of ash to be disposed, pipeline distance, pipeline profile, density of slurry, viscosity of slurry etc. Moreover ash is highly abrasive and pipeline wear also needs to be considered. A critical aspect of system is selection of slurry velocity in the pipeline which should be low to minimize abrasion but high enough to avoid settling of Ash in the pipeline.Slurry with low or medium concentration (usually 45% to 50% by weight) can be pumped using centrifugal slurry pumps. The viscosity of slurry does not have much effect for such conditions while calculating pressure requirement, but as the slurry concentration increases the viscosity effect has a dominant effect for calculating pressure requirement. Generally ash slurry pumping beyond 65% in not feasible, as high concentration slurry requires extremely high pressure which increases exponentially as per the concentration. Such high pressures can be developed using piston diaphragm pumps. These pumps can develop very high pressures but are very costly and have a very high maintenance cost. The high pressures result in higher power consumption though the water requirement is lower in this system.

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  • ash handling systems

    ash handling systems

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    Fly Ash is the major constituent of the ash generated from Pulverized and Fluidized bed Coalfired boilers. The Fly ash gets collected at various points, with most of it in ESP hoppers. One of the methods for handling Fly Ash is Wet system in which the ash is mixed with water to form slurry which is pumped to slurry pit.

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Contact Information

Deccan Mechanical & Chemical Industries Pvt. Ltd.

  • Shrinivas Sapre
  • No. 78, MIDC, Bhosari, Industrial Estate, Pune, Maharashtra

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