Coal & Coke Furnaces

• The Carbolite range of furnaces and ovens for coal and coke testing and iron ore evaluation have become established as the standard equipment used in coal laboratories, power plants and steelworks throughout the world.
• Laboratory furnaces include ashing furnaces, volatile matter furnaces, minimum free space ovens, swelling number index furnace, the coal ash fusibility furnace, sulphur & chlorine content furnace, carbon & hydrogen content test furnaces.
• Pilot plant equipment includes moving wall coking test ovens, coking test ovens, sole heated ovens, vertically split coking ovens, iron ore testing furnace and coke reactivity test equipment.
• The introduction of the Carbolite coal ash fusibility furnace has revolutionised coal sample testing where time and accuracy are critical. Coal ash fusibility testing is required by users of coal to determine the ash fusibility characteristics of the fuel. The CAF is designed to heat coal ash samples up to a maximum temperature of 1600°C in a controlled atmosphere and visually record the fusion of samples for analysis.

Economy Chamber Furnaces to 1100°C

The furnaces offered in this range comprise three models all with a maximum operating temperature of 1100°C.

• The ELF and EAF (economy ashing furnace) models are suitable for light duty general work.
• The EML is a more robust model for heavier duty applications.
• The drop down door can be used as a shelf when loading and unloading samples.
• The door plug acts as a trap for radiated heat, thus improving the chamber uniformity.
• Safety features on all models include a positive break safety switch which isolates power to the elements whenever the door is opened.
• Low outer case temperatures are achieved by using double skinned construction to promote natural air convection.

Asphalt Binder Analyser

• The ABA furnace was introduced to replace the traditional solvent method of determining the asphalt binder content of hot mix asphalt/bituminous mixtures.
• By using the loss on ignition method, the health and environmental concerns relating to the use of solvents are eliminated.
• The ABA combines a sophisticated furnace and weighing system to continuously measure the weight loss of a bituminous mixture during combustion and automatically calculates the binder content at the end of each test.
• Rapid heat up rates and test time times allow the furnace to be switched off between tests and permits several samples per day to be tested.
• Safety features include automatic door locking during test, an independently controlled afterburner which significantly reduces furnace emissions and a door safety switch which isolates power to the elements when the door is opened.

High Temperature Chamber Furnaces (1400°C - 2050°C)

Over 50 models are offered in this range, where temperatures range from 1400°C to 2050°C.

• Both bench mounted and floor standing models are available, offering the ultimate in choice of temperature and chamber capacity.
• The range includes silicon carbide heated furnaces up to 1600°C and molybdenum disilicide elements heat the 1700°C and 1800°C models.
• The 2050°C chamber ultra high temperature chamber furnace is heated initially by Kanthal Super 1900 elements and then ultimately by Zircothal heating elements.
• Bottom loading models are offered at 1700°C and 1800°C and ideally suited for the firing and sintering of advanced ceramics and high temperature glass melting. Excellent temperature uniformity is obtained by the use of molybdenum disilicide heating elements which are positioned around the sides of the chamber.

Rotary Reactor Furnaces

• This furnace (HTR) is designed for laboratory scale calcination and the production of high temperature reactions in a wide range of materials.
• This unit combines all the advantages of the fluidised bed furnace and the rotary kiln by providing both a controlled atmosphere and at the same time agitation of powdered solids.

The HTR is invaluable for applications including:

• calcining arsenical gold ores under neutral and oxidising atmospheres;
• analysis of sulphur in ores and metallurgical slags;
• as a low temperature rotary vacuum drier to remove organic solvent from oxide pigment materials; determination of silica content of rice husks.

Tube Furnaces

Carbolite offers probably the most extensive range of tube furnaces from any single manufacturer.

• Included in the range are split, vertical, horizontal and multi-zone versions.
• The range includes wire heated furnaces to
  1200°C, silicon carbide heated furnaces to 1600°C and molybdenum disilicide heated furnaces to 1700°C. Tube furnaces as 1800°C are heated by lanthanum or molybdenum disilicide.
• Many specialist models are included in the range, including vacuum and rotating, and those specifically designed for the calibration of thermocouples.
• Carbolite tube furnaces offer precise temperature control, excellent temperature uniformity and the best solution for heating small work pieces.