SU545849A1 - Chute for processing and discharging metal from a smelter - Google Patents

Description

FIG. 3, and withdraw tangentially from the chute, as shown in FIG. 2, and do not get into the bucket. In the resulting volume of metal (Fig. 3), the jet loses speed, the chute is filled with metal to the level of the toe of the drain part and is poured into the ladle. A minor part of the metal flows out of the hole 5 and flows down the ladder chute 8 into the ladle. The metal jet, the exit of the shaft from the aggregate, is immersed in the volume of the metal in the receiving part / chute and creates a movement of its lower layers towards the drain (Fig. 3). Having met the resistance of the drain part 2 of the gutter (the rise of the lephad and the contraction of the cross section), the metal flow rises and divides into two streams: the lower one merges into the ladle, and the upper one turns back to the aggregate to meet the exit sh, from it the metal stream (Fig. 3). Neoxidic yush, ies (e.g., synthetic slag) or malooxidic yush; ees (FeCr, FeMn), liquid or solid materials used for processing are set to reverse the metal flow, and readily oxidizable (A, SiCa) - to the metal jet coming out of the unit . At the same time, the materials specified on the reverse flow are transferred by them under the outgoing metal stream, which, together with the materials set on it, carries them to the lower metal layers, crushes them into droplets (synthetic slag) or leaves solid pieces (ferroalloys) and runs them into side drain. In the discharge part of the trough, a portion of the material floats to the surface of the return flow, and the process is repeated. A minor part of the materials (synthetic slag), together with the lower metal flow, enters the ladder, where metal processing continues under the action of a falling jet. Thus, the energy of the metal jet emanating from the aggregate creates a circular motion of the metal in the channel in the longitudinal plane, as a result of which multiple mixing of the desired materials with the metal is achieved. The proposed trough allows, during the transfer of the metal from the smelting unit to the ladle, to produce more efficient pre-furnace treatment, thereby improve the quality of the metal and reduce the consumption of the materials being squeezed. The Formula of the Invention 1. A chute for treating metal production from a smelting unit, consisting of a metal lined casing, differing from the fact that, in order to increase the degree of kinetic energy utilization of the metal jet coming out of the unit to mix it with the sitting materials, adjacent to the unit The receiving part of the gutter with a length of 50-75% is made with a slope of I -10 °, the rest of the drainage part of the gutter is with a rise of 5-50 °, the ratio of the cross sectional areas of the receiving and discharge parts of the gutter is 2-5, and on the bottom The second part is the threshold. 2. The chute according to claim 1, which includes the fact that, in order to drain residual melts from the chute, a hole is made at the junction of the receiving and drain chute chambers, which is In addition to the receiving part of the gutter. The source of information taken into account in the examination: 1. US Patent No. 2677609, 75-53, 04.05.54.

6-6

Fig t

one

A - L

B- B

iiZ.S

6