SU618191A2 - Method of automatically metering-out metal into ingot moulds - Google Patents

Description

The invention relates to automatic devices for dispensing liquid metal, in particular for automatically dispensing copper in the process of pouring it into molds in the production of copper anodes.

According to the main author. St. No. 50O892 is known a device for automatic dosing of metal into a mold, comprising a capacitive sensor, a measuring unit and an automation unit for controlling the inclination of the casting ladle and the transfer furnace, as well as a second sensor located above the surface of the mold, which is to be filled, switch, comparison circuit , storage device and mechanism for vertical movement of sensors.

In the production of copper anodes, one of the qualitative indicators, besides the weight, is the specified uniformity of metal distribution over the anode web, which is ensured by the correct installation of the mold before the start of the metal spill.

If a given installation of molds is violated, i.e., its horizontalness is disturbed, the thickness of the cast anode web is uneven in its cross sections, which leads to a violation of the subsequent electrolytic refining process.

In particular, this may lead to no. uniform production of the anode during the electrolysis process and, consequently, to an increase in the number of anodic residues, the probability of occurrence of short circuits increases.

Claims (1)

Violation of the position of the molds can occur both during their initial installation and during the process of bottling due to technological failures in the operation of the casting complex. The control of the installation of the molds at the present time at the non-ferrous metallurgy plants is carried out manually, visually, which cannot provide the required accuracy and speed of control, especially in the process of pouring the metal. The aim of the invention is to improve the accuracy of the geometric shape of excellent myodosis. For this, a device for automatic metering of metal is additionally provided with a key and a control unit, which with its outputs is connected to a switch, a filling machine and a key, and the comparison circuit is connected to a vertical movement mechanism and a control unit through a key. The drawing shows a block diagram of the proposed device. The device contains sensors 1 and 2 levels installed above the molds 3, 4, respectively, poured and going under the fill, the switch 5, the measuring circuit 6, the automation unit 7, which processes the control signals for tilting and lifting the bucket and the transfer furnace, the storage device 8, the circuit 9 comparisons, the mechanism of vertical displacements, the key 11 and the control unit 12 controlling the operation of the device in the mode of measuring the metal dose and in the mode of controlling the position of the presentation. The device works as follows. Before starting the spill, a device is included to control the position of the molds. At the same time, according to the signal from control unit 12, switch 5 connects level sensor 1 to measurement circuit 6, at the output of which a signal is formed that is proportional to the distance between sensor plates 1 and the bottom of mold ingress mold 3. This signal is fed to memory 8. Then control unit 12 outputs the signal to the drive of the casting machine, which starts moving and moves the mold 3 relative to the plates of the sensor 1 so that the ® plates of the sensor 1 are located at the opposite edge of the bottom of the PULLEYS. When this occurs, a new measurement of the distance between the plates of the sensor 1 and the bottom of the mold 3 occurs. This signal from the measuring circuit 6 is fed to the input of the comparison circuit 9, at another input of which the signal from the storage device 8 is watched. The wall starts the comparison circuit 9, this at the output of the signal arises, the value of which with the selected accuracy characterizes the deviation of the bottom of the mold 3 from the horizontal plane. This is the signal through the key 11 enters unit 12, from which, at a given difference value, a command is issued about the presence of an initially installed mold with a large bottom development. In this case, the control unit 12 starts the drive of the casting machine so that under the plates of the sensor 1 is the bottom of the mold 4. In the future, the device is similar to that described above. When bottling 11, the signal from block 12 connects the output of comparison circuit 9 to the mechanism of vertical displacements of sensors to stabilize the distance between the measuring sensor 1 and the bottom of the mold, which is under the pouring. Control of the position of the molds in the horizontal plane can also be carried out in the filling process itself, with the program control unit 12 issuing commands to control the mold before starting to pour metal into it and to drive the carousel to skip the incorrectly installed mold. Thus, the use of the device improves the accuracy of the geometric shape of the cast anodes, eliminating the casting of knowingly defective anodes, which makes it possible to significantly reduce their uneven production during the electrolysis process and, consequently, the likelihood of short circuits. The invention of the device on the author. St. N ° 500892, characterized in that, in order to increase the accuracy of the geometric shape of the cast anodes, it is also assembled by a control unit, the outputs of which are connected to the switch, the driver and the key, and the comparison circuit is connected to the vertical movement mechanism and the control unit through a key. Sources of information taken into account in the examination: 1. Copyright certificate №500892, cl. B 22 1) 39/00, 06.11.74, 1976,