摘要:
A process for continuously preheating and melting prereduced iron ores, in which a charge is continuously introduced into an electric furnace after having been heated by the flue gases coming from the furnace and by the heat and the flue gases from at least one auxiliary heating device, the heating treatment being effected while the charge is subjected to a combined rotary and translatory motion. The charge may comprise, besides the ore, also scorifying agents and/or solid fuels and/or scrap metal.
摘要:
A device for displacing elongated bodies transversely to their axes comprises at least two parallel and horizontal supporting bars of circular cross section, lying in the same plane and having each a longitudinal, outwardly open groove which houses a slide of which the cross section corresponds to that of the groove and has a part inscribed in the circumference of the bar section. Means are provided for slightly rotating the bars about their axes for longitudinally displacing the slides within the grooves. The elongated body to be displaced is placed on the bars so as to rest on the slides which are then moved to displace the body; afterwards, the bars are rotated so that the body is no longer in contact with the slides, which can be moved back to the initial position.
摘要:
A refractory block particularly for lining furnaces intended for heating scrap or ore to be employed in steelmaking, comprises an envelope made of soft steel and a plate of stainless steel welded to the envelope and forming the block face directed towards the interior of the furnace. The envelope is filled with a refractory material, and the plate comprises means by which it is anchored in the refractory material.
摘要:
An apparatus for forming bundles of elongated objects comprises a first member which individually drags the objects, and, after having appropriately oriented said objects, if necessary, about the respective axis, delivers them onto a receiving surface provided in a second member. The distance of said surface from the ground may be varied so as to allow to pile the objects, and the second member itself may be displaced transversally to the dragging direction of the objects, to allow to form adjacent piles of objects. The objects are oriented in such a way that adjacent elements in a pile fit one in the other.
摘要:
The invention concerns an apparatus for heat exchange between a hot and a cold body in particular in form of fluids, divided by a partition wall, in which apparatus a portion of the wall, contacting the hot fluid, is moved and is brought in place of a corresponding wall portion contacting the cold fluid. The invention concerns also the application of the apparatus in a chamber for ore reduction.