ISSN:
1573-9139
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Conclusions A study has been made of the possible use of fibrous thermal-insulation materials for the lining of furnaces operating with a reducing gas. The results of the study make it possible to recommend the use of ShVP-350 tiles at the maximum working temperature of 1200°C and products made from mullite-silica fiber and mineral wadding over the same interval of temperatures as in air, i.e., up to 1150 and 600°C, respectively. The use of fibers made from rocks with a high concentration of iron oxides is ruled out because of their low stability in a reducing atmosphere. The thermal conductivity of the fibrous materials in a reducing atmosphere is 25–40% higher than its value in an air atmosphere. The lowering of the thermal conductivity of fibrous linings in a reducing atmosphere makes it preferable to use them rather than normal linings of equal thickness because of their thermal-insulation properties. The use of the fibrous linings, moreover, helps to keep stable the specified composition of the furnace atmosphere. The time taken to restore this after the door has been opened is 1.5–2.0 times faster than that required for furnaces with the normal lining materials.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01387392
Permalink
