Home > Ovens & FurnacesIndustrial Ovens > Carbolite High Temperature Very Heavy Duty Electric 600°C Oven Stock Code: OZ2108J Manufacturer: Carbolite Model: Calcination Electric Oven Year of Manufacture: 2005 New or Used: Used (Second Hand) Internal Size (WxDxH mm): 1200 x 1200 x 2500 mm Max Temp: 600°C Other Info: 4 Air Circ' Fans superb Temp Uniformity. Weight: 4500 External Dimensions (WxDxH): 3,190 x 2,057 x 4,242 mm high Carbolite High Temperature Very Heavy Duty Electric 600°C OvenThis specification covers the design and construction of a sealed chamber high temperature oven suitable for use in a batch production environment. ** Please watch the videos that shows a Carbolite High Temperature Very Heavy Duty Electric 600°C Oven machine on site and working in a production environment. This oven was sold to Pumped Heat by Riley Surface World primarily for R&D of their energy storage products. Included in the video is a time lapse of ramp up and dwell. Also included is a sequence showing drawings that support the electrical and mechanical recommissioning and re-purposing of controls systems undertaken by Pumped Heat. We would like to thank Pumped Heat for permission to film and their offer to share their experience recommissioning this ovens. ** INTERNAL DIMENSIONS The clear internal working dimensions of the chamber are 1200 mm wide x 2500 mm high x 1200 mm deep. The Marketplace for Surface Technology. New and Used Process Equipment & Machinery. Riley Industries Ltd A subsidiary of Barry Riley & Sons Ltd. Director: M P A Riley, Secretary: D Hemming Registered in England no. 1965748 Page 1/5
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Carbolite High Temperature Very Heavy Duty Electric 600°C Oven
Stock Code: OZ2108JManufacturer: CarboliteModel: Calcination Electric OvenYear of Manufacture: 2005New or Used: Used (Second Hand)Internal Size (WxDxH mm): 1200 x 1200 x 2500 mmMax Temp: 600°COther Info: 4 Air Circ' Fans superb Temp Uniformity.Weight: 4500External Dimensions (WxDxH): 3,190 x 2,057 x 4,242 mm high
Carbolite High Temperature Very Heavy Duty Electric 600°C OvenThis specification covers the design andconstruction of a sealed chamber high temperature oven suitable for use in a batch production environment.
** Please watch the videos that shows a Carbolite High Temperature Very Heavy Duty Electric 600°C Oven machineon site and working in a production environment. This oven was sold to Pumped Heat by Riley Surface Worldprimarily for R&D of their energy storage products. Included in the video is a time lapse of ramp up and dwell. Alsoincluded is a sequence showing drawings that support the electrical and mechanical recommissioning andre-purposing of controls systems undertaken by Pumped Heat. We would like to thank Pumped Heat for permissionto film and their offer to share their experience recommissioning this ovens. **
INTERNAL DIMENSIONS
The clear internal working dimensions of the chamber are 1200 mm wide x 2500 mm high x 1200 mm deep.
The Marketplace for Surface Technology.New and Used Process Equipment & Machinery.
Riley Industries LtdA subsidiary of Barry Riley & Sons Ltd. Director: M P A Riley, Secretary: D Hemming
Carbolite High Temperature Very Heavy Duty Electric 600°C OvenTHERMAL PERFORMANCE
Ovens are designed to run at a maximum continuous working temperature is 600°C. The reproducible accuracy ofthe controller is better ±1°C and the temperature uniformity of the unloaded chamber is better than ±5°C at themaximum temperature. Total heater load 72kW.
AIR FLOW CHARACTERISTICS
The air is circulated around the chamber by two centrifugal fans located one above the other on each side of thechamber giving a total of four fans. An air guide system ensures that the airflow is generally horizontal across thechamber. Each fan is indirectly driven by a 1.5 kW motor. The fan shaft itself is fitted with a seal to prevent airleakage down the fan shaft tube. At ambient temperature each fan delivers approximately 24 cubic metres perminute. With four fans this equates to 27 chamber volume changes per minute with an empty chamber.
CHAMBER ACCESS
The oven is fitted with a one piece centrally pivoting door. After manual closing the door is clamped by fourpneumatic cylinders. The door clamps are interlocked with the control system to prevent the oven door beingopened during the process cycle and when the chamber temperature is above a preset level. A temperaturecontroller allows the door to be opened only below at preset temperatures. The door is fitted with heat seals and ahigh temperature silicone rubber gas seal to prevent leakage of fumes into the workshop. A door switch is fitted toturn off the fans and heaters when the door is open. Voltage free contacts are provided to send signals to indicatewhen the door is closed and locked. The oven is fitted with a Castell key interlock system to allow the door lockmechanism to be isolated when personnel are carrying out maintenance inside the chamber.
SHELVES AND RUNNERS
The oven is supplied without any shelves or runners. It is designed to accepted stillages loaded into the chamber bya fork lift truck.
INTERNAL CHAMBER CONSTRUCTION
The internal chamber is fabricated from grade 430 ferritic stainless steel. All metal works used inside the mainchamber to form air guides and shelf runners are also fabricated from 430 grade stainless steel.
EXTERNAL CONSTRUCTION
The main outer case is fabricated from mild steel rectangular hollow section and panelled with zinc coated mild steelsheet folded and sealed to form a gas tight enclosure.
THERMAL INSULATION
The oven is insulated with high quality ceramic fibre and mineral wool blanket to ensure a safe outer casetemperature.
The Marketplace for Surface Technology.New and Used Process Equipment & Machinery.
Riley Industries LtdA subsidiary of Barry Riley & Sons Ltd. Director: M P A Riley, Secretary: D Hemming
Carbolite High Temperature Very Heavy Duty Electric 600°C OvenHEATING SYSTEM
The chamber is heated by mineral insulated metal-sheathed elements. The low surface watt loading of the elementsensures a long and reliable service life.
CHAMBER VENTILATION
The oven is fitted with an exhaust fan to remove air from the chamber on a continuous basis during the heat up anddwell part of the process cycle. Fresh air is drawn in through a fixed aperture in the inlet damper assembly. Theexhaust fan is rated at 3 cubic meters per minute discharging directly to atmosphere.
Based on the chamber volume being 50% occupied this gives approximately two air changes per minute. Thepurpose of the exhaust fan is to enable a slight negative pressure to be maintained even if the main extract duct fanfails.
COOLING SYSTEM
An air inlet vent is provided to enable the cool down rate of the oven to be significantly increased. The air is suppliedto the inlet vent via a speed controlled inlet blower fan. The inlet blower and damper assembly are mounted on thetop of the oven.
The cold air enters the oven behind a baffle plate where it mixes with the recirculating air before entering theworkspace. Air is discharged through a port on the top of the oven. Pneumatically operated fail closed butterflydampers are included to close off the inlet and exhaust vents when the cooling facility is not in operation. The inletblower fan is capable of delivering 27 cubic metres per minute against a static pressure of 250 Pascals. The inletblower fan is fitted with a variable speed drive so that its performance may be automatically adjusted to achievecontrolled rates of cooling. The fan performance quoted is based on the exhaust vent discharging directly toatmosphere. If the exhaust vent is connected to extract ductwork that itself includes an extract fan then the amountof exhaust air passing through the chamber may well increase.
TEMPERATURE SENSORS
The chamber temperature is sensed by a type "K" mineral insulated metal- sheathed thermocouple. The chamber isdivided into four individually controlled zones. In each zone there are two thermocouples, one for the main controllerand one for the over temperature controller. A further four thermocouples are provided to give temperature indicationin other parts of the chamber. These terminate in standard thermocouple sockets on the control panel.
TEMPERATURE CONTROL
Each of the four zones is controlled by a Eurotherm 3508 single setpoint PID temperature controller. The instrumentshave the facility to accept a 4-20mA remote setpoint from a master time/temperature programmer supplied by others.Each of the controllers is able to transmit its measured value via a 4 – 20mA current output. The purpose of the 4zones is to ensure temperature uniformity throughout the chamber. It is not possible to run the oven with significanttemperature differences between the zones.
The Marketplace for Surface Technology.New and Used Process Equipment & Machinery.
Riley Industries LtdA subsidiary of Barry Riley & Sons Ltd. Director: M P A Riley, Secretary: D Hemming
Carbolite High Temperature Very Heavy Duty Electric 600°C OvenOVER TEMPERATURE CONTROL
Each zone has its own independent over temperature circuit. A Eurotherm 3116 solid-state on/off controller willswitch off the heating elements if a fault causes the set temperature to be exceeded. If any of the over temperaturecircuits trip then the whole oven heating circuit is shut down. In an over temperature condition an audible alarmsounds and an indicator illuminates. A pair of voltage free contacts is provided to send a signal to an externalannunciator.
POWER CONTROL
The power to the heating elements is controlled by three phase thyristor based solid-state relays. The control systemworks silently with no mechanical parts to wear out. The fast cycle zero voltage switching mode of the solid-staterelay gives good control and reduces the generation of radio frequency interference.
CHAMBER SEALING
The air tightness of the oven is achieved by sealing the outer case. This arrangement has been chosen in preferenceto sealing the inner chamber because there is a requirement to provide expansion joints in the inner panels due tothe large size and high working temperature. Where the elements and thermocouples pass through the case theyare sealed by compression fittings. The fan shafts are fitted with twin lip seals to prevent fumes leaking out.
LOCATION OF CONTROLS
All the temperature controllers, and power control equipment is housed within the oven casing, opposite the doorhinge.
POWER SUPPLY REQUIREMENTS
The installed heating power rating of the oven is 72 kW. The installed fan power is 6.55 kW giving a total powerrating of 78.55 kW. It requires a 415 volt three phase and neutral supply rated at 125 amps per phase.
STAND
The oven has an integral stand to raise the oven approximately 300 mm above floor level.
FINISH AND GUARDING
The oven interior has a natural finish. The external case panels and control panel are finished in light greyepoxy/polyester powder paint with the main external frame wet sprayed with dark grey two pack epoxy paint.
OVERALL DIMENSIONS
The approximate external overall dimensions are 3190 mm wide x 4242 mm high x 2057 mm deep. Estimated weightis 4500 kgs. For shipping purposes the height can be reduced to approximately 3400 mm by removal of the exhaustfan, dampers and air inlet blower.
The Marketplace for Surface Technology.New and Used Process Equipment & Machinery.
Riley Industries LtdA subsidiary of Barry Riley & Sons Ltd. Director: M P A Riley, Secretary: D Hemming
Carbolite High Temperature Very Heavy Duty Electric 600°C OvenCalcination (also referred to as calcining) is a thermal treatment process, in presence of air or oxygen, applied toores and other solid materials to bring about a thermal decomposition, phase transition, or removal of a volatilefraction. The calcination process normally takes place at temperatures below the melting point of the productmaterials.View Carbolite High Temperature Very Heavy Duty Electric 600°C Oven on our web site athttps://www.rileysurfaceworld.co.uk/machines/29940.htm
PHOTOGRAPHS TAKEN PRIOR TO REFURBISHMENT.
The Marketplace for Surface Technology.New and Used Process Equipment & Machinery.
Riley Industries LtdA subsidiary of Barry Riley & Sons Ltd. Director: M P A Riley, Secretary: D Hemming
