Multifunctional high-temperature microwave metal smelting equipment

Abstract

The invention discloses multifunctional high-temperature microwave metal smelting equipment. The multifunctional high-temperature microwave metal smelting equipment comprises a power supply system, a control module, microwave sources, a microwave reaction cavity, a microwave heating container, a temperature measuring device and a discharging device. The wave-absorbing reaction cavity is of an odd number metal structure with not less than five faces and is fixedly connected to a frame of the equipment; the microwaves are arranged on the side walls of the microwave reaction cavity; the microwave sources are connected to the power supply system through the control module; a sealing furnace lid is arranged on the top of the microwave reaction cavity; the temperature measuring device in signal connection to the control module is arranged on the furnace lid; a cavity bottom plate fixedly connected to the microwave reaction cavity is arranged in the bottom of the microwave reaction cavity; a through hole is formed in the center position of the cavity bottom plate and a lifting base of the discharging device is arranged on the lower part; and the wave-absorbing reaction cavity is arranged in the through hole penetrating through the cavity bottom plate and is placed in a wave-transmitting insulating sleeve on the lifting base. The multifunctional high-temperature microwave metal smelting equipment disclosed by the invention has the characteristics of being simple in structure, high in heat efficiency and heating rate, good in heating uniformity, wide in applicability and energy-saving and consumption-reducing.

Description

technical field [0001] The invention belongs to the technical field of industrial furnaces, and in particular relates to a multifunctional high-temperature microwave metal smelting equipment with simple structure, high thermal efficiency and heating rate, good heating uniformity, wide application range, energy saving and consumption reduction. Background technique [0002] Metal smelting is a pyrometallurgical process in which metal materials and other auxiliary materials are put into a heating furnace to be melted and tempered, and the charge undergoes certain physical and chemical changes in the high-temperature furnace to produce crude metal or metal enrichment and slag. In the process of metal smelting, it is of great significance to choose efficient and clean smelting equipment. The traditional electric heating furnace has high energy consumption, large scale, low heating efficiency and long heating time, which cannot meet the current clean, efficient, energy-saving and...

AI Technical Summary

Problems solved by technology

However, high-power magnetrons are not conducive to the popularization and application of high-temperature microwave heating and smelting equipment due to high production costs and high prices on the one hand, and high requirements on power supply equipment and cooling systems, and inconvenient maintenance. Limited by the physical generation mechanism of high-power microwaves and the device process structure, the microwave power of a single magnetron is also very limited, which is difficult to meet the power requirements of industrial heating

In addition, due to the low efficiency of the high-power microwave reactor composed of low-power magnetrons, and its main body mainly adopts a rectangular resonant cavity structure closed by a metal wall, due to the unreasonable structure of the cavity and the unreasonable installation position of the magnetron, The electromagnetic waves emitted by each magnetron interfere with each other and cancel each other, the life of the magnetron is greatly shortened, and the power output of the magnetron is affected by the resonance of the reflected wave and becomes unstable. The uneven distribution of the microwave field strength leads to uneven heating

In order to reduce the high requirements of the low-power magnetron combination on the rectangular resonant cavity structure and the installation position of the magnetron, some high-temperature microwave heating and smelting equipment adopts a combination of multiple low-power magnetrons arranged in one direction, and then drives the magnetron by rotating the bracket. The heated material rotates so that all parts of the heated material absorb microwaves evenly to avoid local overheating, but the overall microwave power is small, so that only small-volume materials can be heated; or the use of high-power magnetrons and their combinations will have overall costs. High, high requirements for supporting facilities, and inconvenient maintenance; and the existence of moving mechanical parts in the heating process will reduce the overall reliability

In addition, there is also a method of tunneling multiple magnetrons in series to reduce the requirements for the rectangular resonant cavity structure and the installation position of the magnetrons, but there is also a single heating power that is small, which makes it only suitable for heating small-volume materials and heating The speed is slow, and the over-dispersed magnetron setting will cause the defects of complex reactor structure and large heat dissipation area

The microwave energy distribution in the resonant cavity in high-temperature microwave heating and smelting equipment is not only closely related to factors such as the microwave source, waveguide, and the structure and size of the resonant cavity, but also the electromagnetic characteristics and thermal physical parameters of different heating materials are quite different, and the heating process is also different. The same, so for a given material, it is necessary to design a special high-temperature microwave heating and melting equipment, making it difficult for the high-temperature microwave heating and melting equipment to become a general-purpose equipment

Images