CN-122012823-A - Bimodal vibration fluidization cooling device system for high-temperature metallurgical materials

CN122012823ACN 122012823 ACN122012823 ACN 122012823ACN-122012823-A

Abstract

The invention discloses a bimodal vibration fluidization cooling device system for high-temperature metallurgical materials, which is characterized in that the problems of heat energy waste, secondary pollution, poor product stability and the like in the traditional metallurgical slag treatment process (such as a water quenching method and a slow cooling method) are solved, and the core technology pain points of insufficient slag particle cooling and easy bonding among particles are commonly faced by the new technology of dry centrifugal granulation. The device system processes high-temperature viscous metallurgical slag particles at 1000-1300 ℃ through a synergistic process of precooling and mixed feeding, high-frequency vibration and instant cooling, low-frequency vibration and continuous cooling and graded collection and monitoring, wherein slag particles are rapidly scattered and bonded by matching with instant cold air, the adhesion of concentrate powder is enhanced by the low-frequency vibration to optimize the surface property, meanwhile, the whole process of the slag particles is fully cooled by continuous cold air, and finally, the integrated treatment of non-bonded dispersion-high-efficiency cooling-low inertia modification of metallurgical slag is realized, and the recycling efficiency of the metallurgical slag is greatly improved.

Inventors

LIU XIAONAN
ZUO ZONGLIANG
LIN BOXU
YAN FENGSHUN
ZHANG KAIQIAN
ZHANG QINGJIAN
JI YONGMING
LI WEIHUA
LIU FEI

Assignees

青岛理工大学

Dates

Publication Date: 20260512
Application Date: 20260414

Claims (13)

1. A high-temperature metallurgical material bimodal vibration fluidization cooling device system is characterized by comprising a bimodal vibration system, a synchronous cooling system, a mineral powder blowing system and an auxiliary system, wherein the bimodal vibration system comprises a high-frequency vibrator, a low-frequency vibrator and a spring support, the synchronous cooling system comprises a fluidization bin, cold air nozzles arranged at different positions of the fluidization bin, a fan for supplying air to the cold air nozzles and a flow variable-frequency regulator for regulating air quantity, the mineral powder blowing system comprises a concentrate powder nozzle and a pneumatic conveying pipeline connected with the concentrate powder nozzle, the auxiliary system comprises a water cooling pipeline arranged at a key position, a pulse bag dust remover communicated with an outlet of the fluidization bin and a temperature sensor for monitoring the temperature of materials, and the high-frequency vibrator and the low-frequency vibrator work according to preset frequency and amplitude to apply mechanical actions of different modes to high-temperature metallurgical slag particles in the fluidization bin, and cooperate with cooling air of the synchronous cooling system and concentrate powder blown out by the mineral powder blowing system to realize dispersion, cooling and surface modification of slag particles.
2. The bimodal vibratory fluidization cooling device system of claim 1, wherein the pyrometallurgical slag in step (1) is a pyrometallurgical slag produced during metal smelting, including blast furnace slag, steel slag, copper slag, nickel slag, or lead slag.
3. The system of the bimodal vibratory fluidization cooling device for the high-temperature metallurgical materials, according to claim 1, wherein the high-frequency vibrators in the step (2) are arranged symmetrically at two sides of the fluidization bin, the frequency is 30-60Hz, the amplitude is 1-3mm, and the number of the vibrators is 4.
4. The system of the bimodal vibratory fluidization cooling device for the high-temperature metallurgical materials, according to claim 1, wherein the low-frequency vibrators in the step (3) are arranged at the bottom of the fluidization bin symmetrically, the frequencies are 2-10Hz, the amplitudes are 5-10mm, and the number of the vibrators is 2.
5. The system of the bimodal vibration fluidization cooling device for the high-temperature metallurgical materials, according to claim 3, wherein the vibration direction of the high-frequency vibrator forms an included angle of 10-30 degrees with the horizontal plane, and the two high-frequency vibrators on the same side adopt symmetrical reverse vibration modes.
6. The bimodal vibratory fluidization cooling device system of a pyrometallurgical material according to claim 4 wherein the vibration trace of the low frequency vibrator is elliptical or linear with a vibration direction coincident with the flow direction of the slag particles and the amplitude is gradually decreasing along the flow direction.
7. The bimodal vibratory fluidization cooling device system of a pyrometallurgical material according to claim 1 wherein the high frequency vibrator and the low frequency vibrator form a vibration transition between mounting locations on the fluidization bin, the transition having a deflector disposed therein for guiding slag particles.
8. The bimodal vibratory fluidization cooling device system of a pyrometallurgical material according to claim 1 or 7, wherein the concentrate powder nozzle is arranged above the junction of the high frequency vibrator action area and the low frequency vibrator action area, and the blowing direction of the concentrate powder nozzle forms an included angle of 30-60 degrees with the main slag particle flow down direction.
9. The bimodal vibration fluidization cooling device system for the high-temperature metallurgical materials, which is disclosed in claim 1, is characterized in that a cold air nozzle of the synchronous cooling system is divided into a plurality of groups of independent control air areas, the air areas at least comprise instant cooling air areas which are correspondingly arranged above a high-frequency vibrator and continuous cooling air areas which are correspondingly arranged below a low-frequency vibrator, and the air quantity and the air speed of each group of air areas are independently regulated through the flow variable-frequency regulator.
10. The bimodal vibratory fluidization cooling device system of a pyrometallurgical material according to claim 1 further comprising an intelligent control system in signal connection with the temperature sensor, the high frequency and low frequency vibrators, the fan and the flow variable frequency regulator for dynamically adjusting vibration parameters and air volumes of each cooling air zone based on slag particle temperature, vibration parameters and air volume data monitored in real time and according to a preset temperature-vibration-air volume matching model.
11. The bimodal vibration fluidization cooling device system of high temperature metallurgical materials according to claim 1, wherein the concentrate powder used by the powder injection system is one or more of iron ore powder, steel slag micropowder or metallurgical dust with granularity in the range of 100-500 meshes, and the mixture is injected at a speed of 10-30 m/s by pneumatic conveying, and the injection gas-solid mass ratio is (2-5): 1.
12. A method of bimodal vibratory fluidization cooling of pyrometallurgical materials based on the system of devices according to any one of claims 1-11, comprising the steps of: S1, pre-cooling and mixing feeding, namely feeding high-temperature metallurgical slag particles with the temperature of 1200-1300 ℃ into a fluidization bin, simultaneously introducing cooling air into the bin to primarily cool the high-temperature metallurgical slag particles to 1150-1250 ℃, and blowing concentrate powder with the mass ratio of 3-10% into the high-temperature slag particles to primarily adhere the concentrate powder to the surface of the slag particles; s2, high-frequency vibration and instant cooling, namely starting a high-frequency vibrator to apply high-frequency low-amplitude vibration to slag particles, scattering the bonded slag particles, and simultaneously spraying cooling air to the region to rapidly cool the slag particles to 1000-1100 ℃; s3, low-frequency vibration and continuous cooling, namely, enabling the dispersed slag particles to enter an action area of a low-frequency vibrator, applying large-amplitude low-frequency vibration to strengthen the adhesion of concentrate powder on the surface of the slag particles, and simultaneously continuously introducing cooling air to reduce the average temperature of the slag particles to below 1000 ℃; And S4, collecting and monitoring the slag particles after cooling modification in a grading manner, monitoring the slag temperature, the vibration parameters and the pressure difference of the dust remover in real time, and regulating and controlling the feeding, the cooling air quantity or the vibration parameters according to the monitoring result.
13. The bimodal vibration fluidization cooling method of high temperature metallurgical materials according to claim 12, wherein the surface concentrate powder adhesion rate of the metallurgical slag particles treated in step S3 is not less than 90%, the slag particles are not bonded and agglomerated, and the average temperature is reduced to below 900 ℃.

Description

Bimodal vibration fluidization cooling device system for high-temperature metallurgical materials Technical Field The invention relates to the technical field of metallurgical solid waste dry treatment and recycling, in particular to a high-temperature metallurgical material bimodal vibration fluidization cooling device system and method. The method is particularly suitable for solving the technical bottleneck that slag particles are not sufficiently cooled and the particles are easy to adhere in the dry centrifugal granulating process, and realizing the efficient recycling utilization of Wen Ye gold slag such as blast furnace slag, steel slag, copper slag, nickel slag, lead slag and the like. Background The metallurgical slag is a main byproduct generated in the metal smelting process, and the temperature is extremely high (usually 1200-1500 ℃) during the production, and the viscosity is high and the yield is high. The alloy contains a plurality of valuable metal elements and has high recycling value. However, the high temperature and high viscosity of the material also cause a series of problems such as easy adhesion, slow cooling, difficult recovery of waste heat and the like in the treatment process. At present, the main metallurgical slag treatment processes have the remarkable defects: The traditional wet process (such as water quenching method) adopts high-pressure water quenching, but can realize granulation, but causes waste of heat energy of more than 80 percent, generates a large amount of wastewater, acid steam and dust containing heavy metals, has environmental pollution and steam explosion risks, and the treated slag particles need to be aged for a long time to ensure stability. The slow cooling method is to cool by natural or forced ventilation, the cooling period is as long as tens of hours, and the efficiency is extremely low. In the slow cooling process, slag particles are extremely easy to agglomerate and bond due to uneven temperature field and surface softening, so that large blocks are formed, the subsequent crushing difficulty and energy consumption are obviously increased, and the metal recovery rate is low. The dry centrifugal granulating method is used as a green granulating technology, avoids the problem of water pollution and can recover part of waste heat. But the core bottleneck is that the high temperature slag particles (still typically above 800-1200 ℃) after granulation are not immediately, uniformly and sufficiently cooled. The surface of the high-temperature particles is softened due to waste heat in the collecting, conveying and storing processes, so that serious inter-particle bonding occurs, the bonding rate can reach 15% -30%, and the subsequent sorting and high-value utilization are seriously hindered. The single vibration fluidization technology is that although partial slag particles can be scattered by utilizing vibration, a single frequency mode is generally adopted, and the secondary adhesion problem caused by insufficient cooling cannot be fundamentally solved due to the fact that the single frequency mode is not designed in cooperation with a deep cooling process. Meanwhile, the technology lacks an active modification function on the surface property of the slag particles, and is difficult to meet the requirement of the resource utilization way as a building material admixture and the like on the activity of the slag particles. In summary, the prior art has serious environmental pollution and energy waste problems, or cannot effectively solve the contradiction between the core of cooling and anti-adhesion in the dry treatment route. Therefore, an innovative technology and equipment capable of realizing integration of efficient cooling, forced dispersion and synchronous modification are urgently needed. Disclosure of Invention Aiming at the defects of the prior art, the invention aims to provide a bimodal vibration fluidization cooling device system and a bimodal vibration fluidization cooling method for high-temperature metallurgical materials. The system integrates three core functions of bimodal vibration dispersion, gradient synchronous cooling and mineral powder in-situ modification creatively, so that three problems of insufficient cooling, particle bonding and high chemical inertia of high Wen Ye gold slag in the dry treatment process are accurately solved, and non-bonding dispersion, efficient cooling and activity improvement of slag particles are realized. In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a pyrometallurgical material bimodal vibratory fluidization cooling device system, comprising: the dual-mode vibration system consists of a high-frequency vibrator, a low-frequency vibrator and a spring support piece and is used for applying two kinds of vibration with different mechanical effects to slag particles so as to realize the purposes of dispersing, crushing and then mixing modification. The