摘要:
The combustion system includes a hearth lined with refractory, a combustion chamber formed in the refractory, an air manifold mounted on the hearth, a plurality of gas manifolds extending through the air manifold and into the combustion chamber, and a diffuser mounted on the manifolds to cause turbulence in the air/gas mixture. The gas manifolds include aspirating means for combining the air and gas. The combustion chamber is elongated and has an elongated neck with a flue gas exit slot over which the work piece passes. The flue gas from the combustion of the air/gas mixture in the combustion chamber increases in velocity as the flue gas passes through the elongated neck and exits the flue gas exit slot. The slot has a length sufficient to permit the work piece to rotate 360.degree. as the work piece rotates and travels through the hearth. This causes the work piece to be uniformly heated over every square inch of its surface.
摘要:
It is provided as shown in the drawing with a waste gas guiding duct, a rotating duct, an inserting duct, a connecting duct, a stationary duct, and a branch tube including a feed chute and a gas exhaust duct, and is adapted to preheat a main raw material consisting of direct reduced iron or small lumps of pig iron, or of auxiliary raw materials consisting of ferro-alloy and quick lime by utilizing the waste heat of a waste gas generated in a steel making furnace, weighing the total raw materials, and charging these raw materials into the electric furnace. This enables the energy to be utilized efficiently, and the quality and productivity to be improved.
摘要:
A device is described for feeding bars and tubes into a treatment furnace. The device comprises a rotary drum positioned in front of a long horizontal opening provided in the sidewall of the furnace for receiving a bar and introducing it into the furnace through the opening. The device is characterized by a pair of arms which are articulated around an axis outside the furnace and parallel with the drum and which are designed to receive the bars supplied by the drum and to lay them gently down in the furnace, e.g. on the walking beams of a walking beam furnace.
摘要:
The invention concerns a process and furnace by means of which a wide variety of high temperature reactions can be carried out. The furnace is mounted for rotation about a vertical axis and has an exit orifice in its base. Arc or plasma heating means are provided in the roof of the furnace for melting the contents of the furnace so that the molten layer so formed will approximate to a paraboloid of revolution when the furnace is rotated. By controlling the input of material to the furnace, the rate of withdrawal of molten material from an exit orifice in the base of the furnace, and the energy input to the furnace a stable continuous process can be achieved.
摘要:
A rotary conveyor comprising an annular array of a plurality of circumferentially spaced work piece support members for receiving a corresponding plurality of work pieces. They conveyor further include a first drive ring coaxially associated with the array for rotating the work pieces in the work piece support members. The drive ring is rotatable with respect to the array such that relative movement between the drive ring and the array causes the work pieces to rotate. The invention further includes a rotary oven for depositing and curing resin on work pieces having a shaft thereon. The oven comprises an annular array having a plurality of circumferentially spaced work piece support members. Each work piece support member has a sprocket mounted on its radially inward end and is shaped so as to receive a work piece in its radially outward end. The oven further comprises a drive ring coaxial with the array, the drive ring having a chain mounted about its outer periphery such that the work piece support member sprockets mesh with the chain. The oven also includes a plurality of heating elements to heat the work pieces retained in the work piece support members, and a motor coupled to the ring for rotating the ring about the ring axis. The oven further comprises indexing means coupled to the array for step-wise rotating the annular array, whereby as the array is indexed the work pieces are passed under the heating elements to thereby heat and cure the work pieces.