SU515016A1 - Device for heating and charging of the charge into a shaft-type smelting furnace - Google Patents

Description

one

The invention relates to foundry, in particular, to devices for preheating and loading the charge in a smelting type smelting furnace, mainly for crucible induction furnaces.

A device for heating the charge is known, which contains chambers separated by a partition, closed by gates and connected to each other through a former chamber by channels located in the lining and with a gas supply system, while the trunnions of the chambers are 4 mesh in the supports and connected to a rotational drive around the horizontal axis.

However, such a device does not utilize the heat of the smelting furnace, and the charge time associated with the transfer of the heated mixture to the furnace is significant.

The purpose of the invention is to utilize the heat of the furnace and reduce its loading time.

For this, in the proposed device, thorium Ki.Mep is articulated with a furnace and additionally equipped with gas-permeable flaps, with one of the supports being made with a lifting mechanism and horizontal

displacement. and the friend, connected to the drive, is scattered on the caret.

The drawing shows schematically the proposed my device and the crucible furnace serviced by it.

The device contains forcoromer 1, which is an integral part of the cylindrical body 2, divided by partition 3 into chambers 4 and 5, which communicate with each other through the prechamber and gas outlet systems using lining channels. Each chamber in front of the gate 6 has a flap 7, which prevents the gate from being hit by the charge and from jamming when opening the gate, but does not prevent the charge from being heated by radiation from the crucible furnace, since the flap is made of a grating. The housing has outside the journal 8 and 9, in which it turns. The trunnion 8 is made hollow and through the knee 10 is connected with the support 11 and the ventilation system 12. The trunnion 9 is located in the support 13 and has a drive 14. The trunnions are pivotally connected to the rods of the 15 hydraulic cylinders, this mechanism

lifting the body, with which the supports 11 and 13 are aligned. The support 11 has a drive 16, turning the device with the support 13, mounted on the carriage 17, which moves along the rail B in the form of an arc.

The device operates as follows: Before loading and heating the charge, the gate 6 and the flap 7 of the upper chamber are opened in succession and it is loaded with a conventional charging mechanism, for example a magnetic washer. Close the valve 7 and the gate 6, turn on the prechamber 1, and for some time calcine the mixture ,. Then the housing 2 is raised, turned and lowered onto the furnace 18, the gate 6 is opened, and the mixture is heated to operating temperature, after which the valve 7 is opened, and the mixture falls into the furnace bath, while the upper chamber is loaded charge followed by the repetition of the operations described. In this order of work on the heating and loading of the 1khhta using this device, the cooling of the charge during loading is eliminated, the heat losses of the furnace are used, there is no need for vehicles

for delivery and loading of the heated mixture and there is no smoke emission in the workshop. After the bath is deposited, the device is removed to the side and the metal is drained into the casting ladle.

Claims (1)

Invention Formula A device for heating and dumping the charge into a shaft-type smelting furnace, containing chambers separated by a partition and closed by gates and interconnected through the prechamber by channels located in the lining and A gas exhaust system, wherein the camera trunnions are placed in supports and connected to a rotational drive around a horizontal axis, characterized in that, in order to recover the heat of the furnace and shorten its charging time, the ends of the chambers are joined to the furnace and are additionally equipped with a gas-permeable damper, one The opyr is made with a lifting and horizontal movement mechanism, and the other, connected to the drive, is placed on the carriage.