Abstract: An apparatus for the removal of gasses from a number of electrolysis cells, including a suction duct for each cell, each suction duct being connected to a central manifold with a gas treatment center and a central suction fan. A flow restriction device is provided in each suction duct. One or more additional ductworks are provided. Each additional ductwork is for one or more suction ducts. Each additional ductwork has a branch for each suction duct, the branch being connected to the suction duct between the electrolysis cell and the flow restriction device, which one or more branches are connected to a booster duct in which an on/off valve is present. One or more booster ducts are connected to a booster manifold connected to the central manifold. A booster fan is provided in the booster manifold. A method for performing an electrolysis process is also disclosed.

Abstract: An apparatus for the removal of gasses from a number of electrolysis cells, including a suction duct for each cell, each suction duct being connected to a central manifold with a gas treatment centre and a central suction fan. A flow restriction device is provided in each suction duct. One or more additional ductworks are provided. Each additional ductwork is for one or more suction ducts. Each additional ductwork has a branch for each suction duct, the branch being connected to the suction duct between the electrolysis cell and the flow restriction device, which one or more branches are connected to a booster duct in which an on/off valve is present. One or more booster ducts are connected to a booster manifold connected to the central manifold. A booster fan is provided in the booster manifold. A method for performing an electrolysis process is also disclosed.

Abstract: The invention relates to a cyclone separator for blast furnace gas including: a cyclone vessel having a central axis and including a side wall, a top wall and bottom wall; a first inlet duct connected with an end to the side wall of the cyclone vessel at a predetermined position intermediate the top and bottom wall; and a central outlet duct which traverses through the top wall of the cyclone vessel and extends into the cyclone vessel, and a further inlet duct connected with an end to the side wall of the cyclone vessel in circumferentially spaced relationship to the first inlet duct.

Abstract: The invention relates to a method of stabilising a refractory inner wall of a hot blast generative device having a wall configuration comprising an outer wall and a refractory inner wall, in particular the refractory inner wall of the combustion chamber of a hot blast generative device According to the invention the method comprises the steps of providing one or more holes through said wall configuration from the outside of the hot blast generative device; introducing a support for supporting the refractory inner wall in a hole thus provided, fixing said support to the outer wall.