Carbolite

Coal ash fusibility furnaces


Coal Ash Fusibility Furnaces


CAF Video

Image Recording

A choice of video tape recording or digital capture of the images onto a high specification PC is offered.

Video

A high resolution video system is used to observe the shapes of the samples as they are heated. A digital temperature reading, date and a batch identifier are recorded with the video picture.

On completion of the test, the recording can be replayed at high speed to find the deformation temperatures for each sample. The precise stages of fusion are then determined, moving the recording between deformation points and simply noting the temperatures shown on the screen. The recording can be maintained as a permanent record of the test.

Digital

An image from the video camera is captured at specified time and temperature intervals and stored on computer in sequence order, including date, time, a batch identifier and the temperature at the point of capture. A real time image of the samples is displayed on the computer monitor throughout the test.

The precise stages of fusion are then determined by quickly and accurately scrolling through the stored images to the required point and recording the deformation temperature using the automatic results feature in the software. To ensure accurate comparison of sample height and width, a grid overlay feature is provided in the software. The scale of the grid is adjustable and can easily be moved on the screen to analyse each sample in turn.

A results print out can be generated using the test software. Also, the results and their associated images can easily be imported into a Windows based word processor and spreadsheet software package. Tests can be stored on computer disc for future analysis and a high density storage media and drive are provided to allow compact and secure archiving of test data.




Furnace Specification

 

Furse cabinet dimensions (mm)*

(h x w x case depth x overalldepth/including depth of door)

700 x 505 x 650 x 970

Work tube (internal diameter mm)
79
Tube material
Mullite
Maximum no of samples
12
Maximum temperature degC (degF)
1600 (2912)
Maximum recommended heat up rate degC/minute (degF/minute)
8 (15)
Heating elements
Silicon carbide
Temperature control
Digital PID with multi offset-parameters
Temperature sensor
Pt & Pt/13% Rh thermocouple
Overtemperature protection
Digital with high alarm relay
Power switching
Solid state relays
Power supply
380/415V, 50/60hz, two phase, 25A/phase or 220 x 240V, 50/60Hz, single phase, 50A Other voltages available on request
Maximum power consumtion (kW)
7
Gases:
Two options are available for use with the following gases. Gas option has to be specified with order.
  
Reducing gas Oxidising gas Purge gas
60% (V/V) CO + 40% (V/V) CO² Air N²
or

reducing gas Oxidising gas Purge gas
50% (V/V) H² + 50% (V/V) CO² CO²
CO² (For use with H²)


*For the video version, a monitor/video cabinet of the same dimensions is also supplied. In the case of the digital version, space will be required for the location of a PC