Abstract: A gyratory crusher includes an inner and an outer crushing shell. The outer crushing shell has three regions along its axial length including: an inlet region that tapers radially inward from an uppermost first end; a crushing region that extends radially inward from a second lowermost end; and a radially innermost shoulder region that is positioned axially between the inlet and crushing regions. An angle of inclination of a radially inward facing surface at the inlet and shoulder regions and the axial length of the crushing surface are designed to optimize crushing capacity in addition maximizing reduction.

Abstract: A gyratory crusher includes an inner and an outer crushing shell. The outer crushing shell has three regions along its axial length including: an inlet region that tapers radially inward from an uppermost first end; a crushing region that extends radially inward from a second lowermost end; and a radially innermost shoulder region that is positioned axially between the inlet and crushing regions. An angle of inclination of a radially inward facing surface at the inlet and shoulder regions and the axial length of the crushing surface are designed to optimise crushing capacity in addition maximising reduction.

Abstract: A gyratory crusher outer crushing shell has three regions along its axial length including: an inlet region that tapers radially inward from an uppermost first end; a crushing region that extends radially inward from a second lowermost end; and a radially innermost shoulder region that is positioned axially between the inlet and crushing regions. An angle of inclination of a radially inward facing surface at the inlet and shoulder regions and the axial length of the crushing surface are designed to optimise crushing capacity in addition maximising reduction.

Abstract: Fuel for an engine is supplied from a first fuel tank. Return fuel from the engine is gathered in a second fuel tank for resupply to the engine. The second fuel tank is connected to and replenishable from the first fuel tank. The engine receives all its fuel from the second tank. On the second fuel tank there is a level device for regulating the fuel level. The level device is supplied with fuel from the first fuel tank via a first line. The first line has an inlet which is intended for fuel and which is connected to the second fuel tank in order to be able to remove fuel from the latter. The inlet is arranged at a level corresponding to the intended fuel level in the second fuel tank.

Abstract: Fuel for an engine is supplied from a first fuel tank. Return fuel from the engine is gathered in a second fuel tank for resupply to the engine. The second fuel tank is connected to and replenishable from the first fuel tank. The engine receives all its fuel from the second tank. On the second fuel tank there is a level device for regulating the fuel level. The level device is supplied with fuel from the first fuel tank via a first line. The first line has an inlet which is intended for fuel and which is connected to the second fuel tank in order to be able to remove fuel from the latter. The inlet is arranged at a level corresponding to the intended fuel level in the second fuel tank.

Abstract: A method treats process water containing metal ions, in connection with bleaching of lignocellulosic pulp. The method is characterized by the steps of a) adjusting the Mg2+ content of the process water to form a flocculating base for metals and an organic substance; b) supplying a carbonate source to the process water to precipiate calcium as calcium carbonate; c) increasing the pH of the process water by adding white liquor to precipipate metals such as metal hydroxides; d) adding a flocculating agent to the process water; and e) separating the precipitated, flocculated metal compounds from the process water by flotation.