Extremely-fast air cooling treatment device and method for liquid steel slag
阅读说明：本技术 液态钢渣的极速风冷处理装置及方法 (Extremely-fast air cooling treatment device and method for liquid steel slag ) 是由 唐春江 于 2019-12-26 设计创作，主要内容包括：本发明提供了一种液态钢渣的极速风冷处理装置及方法,该装置包括行吊设备、渣罐、倾翻平台、液压控制系统、溜槽、恒压空气系统、筛分平台和自动化控制平台,倾翻平台和恒压空气系统实时接收自动化控制平台命令,实时检测调整倾倒角度控制流速,实时调整恒压空气流压强,从而使得流速和压强高度匹配,成型的钢渣丸为晶体结构,内部不含f-CAO,性能更加稳定。生产出的产品硬度高,性能稳定,耐磨,密度在3.6~4.2T/m3,所含铁元素直接为二价铁形态,市场应用广泛,附加值高,可应用于配重,磨料,以及高性能透水砖等。(The invention provides a rapid air cooling treatment device and a method for liquid steel slag, the device comprises a crane device, a slag tank, a tipping platform, a hydraulic control system, a chute, a constant pressure air system, a screening platform and an automatic control platform, wherein the tipping platform and the constant pressure air system receive commands from the automatic control platform in real time, detect and adjust the tipping angle in real time to control the flow rate, and adjust the pressure of constant pressure air flow in real time, so that the flow rate and the pressure are highly matched, a formed steel slag ball has a crystal structure, the inside of the steel slag ball does not contain f-CAO, and the performance is more stable. The produced product is high in hardness, stable in performance and wear-resistant, the density is 3.6-4.2T/m, the contained iron element is directly in a divalent iron form, the market application is wide, the additional value is high, and the method can be applied to balance weights, grinding materials, high-performance water permeable bricks and the like.)
1. The utility model provides a very fast forced air cooling processing apparatus of liquid slag which characterized in that: the automatic tipping platform comprises a traveling crane device, a slag tank, a tipping platform, a hydraulic control system, a chute, a constant pressure air system, a screening platform and an automatic control platform, wherein the traveling crane device controls the slag tank to move between a raw material area and the tipping platform, and the tipping platform controls the chute to tip through the hydraulic control system; the constant-pressure air system is provided with a constant-pressure air nozzle, and the nozzle blows the liquid steel slag sliding on the chute to the screening platform towards the tail end of the tilting platform; the chute is provided with an oblique angle sensor and a temperature sensor which are connected with the automatic control platform, and the automatic control platform receives information fed back by the sensors in real time; the constant-pressure air system and the hydraulic control system are respectively connected with the automatic control platform, and the automatic control platform controls the constant-pressure air flow spraying speed of the nozzle and the tipping speed of the hydraulic control system.
2. The ultra-fast air-cooling processing device for liquid steel slag according to claim 1, characterized in that: the constant pressure air system is provided with a high pressure air storage tank of the constant pressure air system.
3. The ultra-fast air-cooling processing device for liquid steel slag according to claim 1, characterized in that: the nozzle is a grid type nozzle, and the diameter of each grid is 0.3-4.8 cm.
4. The extremely-fast air cooling treatment method of the liquid steel slag is characterized by comprising the following steps of:
1) the slag pot filled with the liquid steel slag is hoisted to the tipping platform by the hoisting equipment;
2) the hydraulic control system pours the liquid steel slag into a chute, and the liquid steel slag is fed back to the automatic control platform in real time through the oblique angle sensor and the temperature sensor;
3) the constant pressure air system adjusts constant pressure air flow matched with the flow rate of the liquid steel slag according to the instruction of the automatic control platform, the constant pressure air flow is sprayed out through the grid-type nozzles, the impacted liquid steel slag flies along the direction of the high pressure air flow and is granulated into small liquid drops, the liquid steel slag is condensed into a spherical shape due to the surface tension of the liquid steel slag, the liquid steel slag falls onto the ground, the liquid steel slag is collected and transported to a screening platform after being naturally cooled, and the liquid.
5. The method for extremely-fast air-cooling treatment of liquid steel slag according to claim 4, wherein the method comprises the following steps: the load of the traveling crane equipment in the step 1) is 10-100T, and the temperature of the liquid steel slag in the slag tank is 1350-1600 ℃.
6. The method for extremely rapid air-cooling treatment of liquid steel slag according to claim 4, wherein: the dumping step of the hydraulic control system in the step 2) is 0.1-10 degrees in the dumping process.
7. The method for extremely rapid air-cooling treatment of liquid steel slag according to claim 4, wherein: the flow rate of the liquid steel slag in the step 3) is 1-1.3T/min, the air pressure of constant-pressure air is 5-60 KPa, the diameter of steel slag particles screened by the grid-type nozzles is 0.1-4.8 mm, and the falling temperature of the steel slag is 50-65 ℃.
Technical Field
The invention relates to the technical field of environmental protection recovery, in particular to a top-speed air cooling device and a method for treating liquid steel slag.
Background
The steel slag is used as a concomitant product in steel production, is a tragus stone which restricts the development of industries due to more years, large occupied storage area, low application value, serious pollution and the like, and cannot meet the current environmental protection requirement. At present, the treatment methods in the industry mainly comprise several types, namely a hot splashing method which has serious pollution and large occupied area; the second water quenching method has water pollution and is easy to explode when meeting water; the third roller method has higher cost, high failure rate and low processing efficiency; the fourth hot stuffy method is easy to generate secondary environmental pollution; the fifth air quenching method, wherein firstly, the produced ferric oxide is ferric iron; in the second method, inert gas such as nitrogen is used to control the generation of ferric oxide form, so as to achieve the purpose of generating ferrous iron, and certain potential safety hazard exists.
Disclosure of Invention
The invention provides a device and a method for extremely-fast air-cooling treatment of liquid steel slag to solve the problems of the prior art, and the product produced by the invention has high hardness, stable performance and wear resistance, contains iron elements in a ferrous form directly, has wide market application and high added value, and can be applied to balance weights, grinding materials, high-performance water permeable bricks and the like.
The invention provides a rapid air-cooling treatment device for liquid steel slag, which comprises a traveling crane device, a slag tank, a tipping platform, a hydraulic control system, a chute, a constant pressure air system, a screening platform and an automatic control platform, wherein the traveling crane device controls the slag tank to move between a raw material area and the tipping platform, and the tipping platform controls the tipping movement to the chute through the hydraulic control system; the constant-pressure air system is provided with a constant-pressure air nozzle, and the nozzle blows the products sliding on the chute to the screening platform towards the tail end of the tilting platform; the chute is provided with an oblique angle sensor and a temperature sensor which are connected with the automatic control platform, and the automatic control platform controls the oblique angle of the chute and monitors the temperature of the steel slag on the chute; the constant-pressure air system is connected with the automatic control platform, and the automatic control platform controls the constant-pressure air flow spraying speed of the nozzle.
In a further improvement, the constant pressure air system is provided with a high pressure air storage tank of the constant pressure air system.
The improved nozzle is a grid-type nozzle, and the passing diameter of the grid is 0.3-4.8 cm.
The invention also provides a rapid air cooling treatment method of the liquid steel slag, which comprises the following steps:
1) the slag pot filled with the liquid steel slag is hoisted to the tipping platform by the hoisting equipment, the load of the hoisting equipment is 10-100T, and the temperature of the liquid steel slag in the slag pot is 1350-1600 ℃.
2) The liquid steel slag is poured into the chute by the hydraulic control system, and is fed back to the automatic control platform in real time through the oblique angle sensor and the temperature sensor, and the pouring step of the hydraulic control system is 0.1-10 degrees in the pouring process.
3) The constant pressure air system adjusts constant pressure air flow matched with the flow rate of the liquid steel slag according to the instruction of the automatic control platform, the constant pressure air flow is sprayed out through the grid-type nozzles, the impacted liquid steel slag flies along the direction of the high pressure air flow and is granulated into small liquid drops, the liquid steel slag is condensed into a spherical shape due to the surface tension of the liquid steel slag, the liquid steel slag falls onto the ground, the liquid steel slag is collected and transported to a screening platform after being naturally cooled, and the liquid.
The flow rate of the liquid steel slag is 1-1.3T/min, the air pressure of constant-pressure air flow is 5-60 KPa, the diameter of steel slag particles screened by the grid-type nozzles is 0.1-4.8 mm, and the falling temperature of the steel slag is 50-65 ℃.
The invention has the beneficial effects that:
1. the tipping platform and the constant-pressure air system receive the command of the automatic control platform in real time, detect and adjust the tipping angle in real time to control the flow rate and adjust the pressure of the constant-pressure air flow in real time, so that the flow rate and the pressure are highly matched, and the formed steel slag pill is a synthetic product of ferric oxide, dicalcium silicate, tricalcium silicate, aluminum oxide, magnesium oxide and the like, has a crystal structure, does not contain f-CAO inside and has more stable performance. The produced product is high in hardness, stable in performance and wear-resistant, the density is 3.6-4.2T/m, the contained iron element is directly in a divalent iron form, the market application is wide, the additional value is high, and the method can be applied to balance weights, grinding materials, high-performance water permeable bricks and the like.
2. Because the automatic control platform automatically matches and controls the hydraulic control system and the constant-pressure air system in real time, the temperature of liquid steel slag droplets is 300 +/-30 ℃ when flying out, and the temperature is already in a low-temperature state below 80 ℃ when falling to the ground through cooling in the flying process, so steel slag balls directly fall on the ground without special cooling of a water tank. No water contamination is produced because water intervention is no longer required.
3. And inert gas impact is avoided, the logic structure of the system is optimized, laying of inert gas pipelines is avoided, and explosion is avoided.
Drawings
Fig. 1 is a schematic structural diagram of the device provided by the present invention.
In the figure, 1 is a hoisting device; 2 is a slag pot; 3 is a tipping platform; 4 is a hydraulic control system; 5 is a chute; 6 is a high-pressure air storage tank of a constant-pressure air system; 7 is a constant pressure air system; 8, product line throwing; 9, obtaining finished steel slag balls; 10 is a screening platform; 11 is a transport vehicle; and 12, an automation control platform.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
The invention provides a top-speed air-cooling treatment device for liquid steel slag, which has a structure shown in figure 1 and comprises a traveling crane device 1, a slag tank 2, a tipping platform 3, a hydraulic control system 4, a chute 5, a constant-pressure air system 7, a screening platform 10 and an
In a further improvement, the constant pressure air system 7 is provided with a constant pressure air system high pressure air storage tank 6.
The improved nozzle is a grid type nozzle, and the diameter of each grid is 0.3-4.8 cm.
The invention also provides a rapid air cooling treatment method of the liquid steel slag, which comprises the following steps:
1) the slag pot filled with the liquid steel slag is hoisted to the tipping platform by the hoisting equipment, the load of the hoisting equipment is 10-100T, and the temperature of the liquid steel slag in the slag pot is 1350-1600 ℃.
2) The liquid steel slag is poured into the chute by the hydraulic control system, and is fed back to the automatic control platform in real time through the oblique angle sensor and the temperature sensor, and the pouring step of the hydraulic control system is 0.1-10 degrees in the pouring process.
3) The constant pressure air system adjusts constant pressure air flow matched with the flow rate of the liquid steel slag according to the instruction of the automatic control platform, the constant pressure air flow is sprayed out through the grid-type nozzles, the impacted liquid steel slag flies along the direction of the high pressure air flow and is granulated into small liquid drops, the liquid steel slag is condensed into a spherical shape due to the surface tension of the liquid steel slag, the liquid steel slag falls onto the ground, the liquid steel slag is collected and transported to a screening platform after being naturally cooled, and the liquid.
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