US 12,228,443 B2
Measurement system for the phase level in a smelting furnace
Claudio Fuentes Weishaupt, Santiago (CL); Leonel Contreras Rojas, Santiago (CL); and Rodolfo Weishaupt Silva, Santiago (CL)
Assigned to CODELCOTEC SPA, Santiago (CL)
Appl. No. 17/756,578
Filed by CODELCOTEC SPA, Santiago (CL)
PCT Filed Nov. 27, 2020, PCT No. PCT/CL2020/050163
§ 371(c)(1), (2) Date May 27, 2022,
PCT Pub. No. WO2021/102597, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 201911199245.0 (CN), filed on Nov. 29, 2019.
Prior Publication US 2023/0003569 A1, Jan. 5, 2023
Int. Cl. G01F 23/24 (2006.01); F27D 27/00 (2010.01)
CPC G01F 23/246 (2013.01) [F27D 27/00 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A wireless system adapted to determine a height of levels of liquid or molten metals within metal, shaft, matte or slag pyrometallurgical smelting reactors, comprising:
a programmable logic controller equipped with a wireless transmitter-receiver device that has analog inputs and discrete outputs connected to a circuit of solid-state and electromechanical relays;
one or more electrodes connected to the circuit, the one or more electrodes being disposed in a melting furnace, the one or more electrodes being submerged in a specific phase of a metallurgical bath within the melting furnace;
wherein the programmable logic controller is connected via the transmitter-receiver device to a control interface;
wherein the circuit comprises at least three connection points;
wherein the circuit further includes:
a first plurality of pairs of first terminals, each pair of first terminals connected to the circuit by at least one corresponding first switch, each pair of first terminals having a permanently open configuration; and
a second plurality of pairs of second terminals, each pair of second terminals connected to the circuit by at least one corresponding second switch, each pair of second terminals having a permanently open configuration;
wherein the first plurality of pairs of first terminals and the second plurality of pairs of second terminals are adapted to enable a flow of current through a selected pair of first terminals and a selected pair of second terminals, in series, when the at least one first switch corresponding to the selected pair of first terminals is closed and the at least one second switch corresponding to the selected pair of second terminals is closed.