Apparatus for the dry distillation and a method for the preliminary drying of bituminous materials
ES111641A1
Installation for the slow combustion or calcination of bituminous materials and method for the previous drying of the same ones.
GB304238A
Closing shutters for tunnel ovens
US1828669A
Closing shutter for tunnel ovens
US1770107A
Apparatus for dry distillation
GB327717A
Improvements in the construction of wagons and rails, applied in ovens for dry distillation, driers, kilns and similar ovens working by means of gas and vapour injections or circulations
