CN111041134A - Method for carrying out hot stuffy treatment on steel slag by using steel slag stuffy pot - Google Patents
Method for carrying out hot stuffy treatment on steel slag by using steel slag stuffy pot Download PDFInfo
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- CN111041134A CN111041134A CN201910617404.8A CN201910617404A CN111041134A CN 111041134 A CN111041134 A CN 111041134A CN 201910617404 A CN201910617404 A CN 201910617404A CN 111041134 A CN111041134 A CN 111041134A
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- slag
- steel slag
- pot body
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
- C21B3/10—Slag pots; Slag cars
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Abstract
The invention discloses a method for carrying out hot smoldering treatment on steel slag by using a steel slag smoldering pot, which comprises the following steps of firstly, loading a slag sealing cover, placing a slag bag loaded with solid hot steel slag into a pot body, and locking and sealing the slag bag; secondly, hot stuffiness of the waste gas is carried out, and first hot stuffiness is carried out, namely water is sprayed to generate a large amount of water vapor; then primary voltage stabilization control is carried out; secondly, performing secondary hot stuffiness, and introducing waste gas containing SO2 and CO2 into the slag ladle; then, carrying out secondary voltage stabilization control; thirdly, replacing and decompressing, namely introducing low-temperature inert gas into the pot body, and opening an exhaust port to replace air in the pot body until the concentrations of combustible gas and residual waste gas in the pot body are lower than a set value simultaneously; then closing the inert gas introducing device, and continuously exhausting until the pressure difference between the inside and the outside of the pot body is zero; and step four, discharging slag and water, namely opening an end cover, taking out the slag ladle and discharging water. The waste gas containing the SO2 and the CO2 is utilized for digestion, SO that the digestion is more thorough.
Description
Technical Field
The invention relates to the field of steel slag treatment, in particular to a method for carrying out hot stuffiness treatment on steel slag by applying a steel slag stuffy pot.
Background
There are many methods for treating steel slag, for example: hot splashing, hot stuffiness, water quenching, air quenching, roller granulation, and the like. Each has advantages and disadvantages: wherein the steel slag treatment efficiency of the hot splashing method is lower and pollutes the environment; the hot-disintegration method and the water quenching method have great potential safety hazard; the compressed air consumption of the air quenching method is high, and the noise is high; the roller granulation method has the advantages of general efficiency, higher equipment energy consumption, higher failure rate and higher investment.
The invention patent with the publication number of CN101417866B provides a pressure self-decomposition treatment method for the waste heat of solid hot steel slag, which mainly improves the pressure self-decomposition treatment method and has the advantages that the steel slag is put into a pressure-resistant self-decomposition tank, and water is sprayed into the self-decomposition tank to generate saturated steam, so that the steel slag is subjected to hydration reaction under the condition of constant pressure, and free CaO and MgO in the steel slag are removed. Compared with the traditional hot-closed method, the digestion and crushing effect of the method is improved, but the digestion effect is general and still needs to be improved.
Disclosure of Invention
The invention aims to provide a steel slag treatment method for digesting waste gas containing SO2 and CO2, SO as to improve the digestion effect and promote the recycling of the waste gas.
The purpose of the invention is realized as follows: the steel slag stewpot comprises a pot body, a cover sealing device and a slag ladle arranged in the pot body; two slag ladle seats for placing slag ladles are arranged in the pot body; the lower end outside the pot body is provided with a bottom support and a drain pipe communicated with the inside of the pot body; the outer side of the pot body is sequentially provided with an exhaust port, a monitoring port, an inert gas inlet and a waste gas inlet from top to bottom; each slag ladle seat is provided with an exhaust gas channel communicated with an exhaust gas inlet; an exhaust gas connection mechanism is arranged at the outlet of each exhaust gas channel;
the cover sealing device comprises an end cover, a turnover mechanism for opening and closing the end cover, a pressing mechanism for pressing the end cover, and a locking mechanism for locking the end cover; the inner side of the end cover is provided with a water spraying mechanism, and the top of the end cover is provided with a limiting mechanism for limiting the angle position of the end cover;
the slag ladle comprises a slag ladle body and two trunnion seats respectively arranged at two sides of the slag ladle body; each trunnion seat is provided with a trunnion; the lower half part of the outer side of the slag ladle body is provided with a gas distribution mechanism which is communicated with the inside of the slag ladle body and is used for introducing waste gas; an air inlet channel is arranged in each trunnion seat and communicated with an air distribution mechanism; the waste gas is specifically pollution gas containing two components of SO2 and CO 2;
the stew pan also comprises a real-time monitoring device, an inert gas introducing device, a waste gas introducing device and a control host.
The processing method comprises the following steps:
firstly, filling slag and sealing a cover, pouring solid hot steel slag into a slag bag; then, a slag ladle filled with solid hot steel slag is placed on a slag ladle seat in the pot body through hoisting equipment; finally, the end cover is closed and is locked and sealed.
Secondly, hot stuffiness of the waste gas is carried out, namely, a water spraying mechanism is started for the first time, sprayed water is contacted with the steel slag, a large amount of water vapor is generated in an inner cavity of a pot body, and partial water vapor permeates into the steel slag through gaps;
then, primary pressure stabilization control is carried out, namely, the air pressure in the pot body is confirmed through monitoring of the real-time monitoring device, redundant steam is discharged through real-time adjustment of the exhaust port, so that the air pressure in the pot body is stabilized, and the pressure stabilization lasts for a certain time;
then, performing secondary hot stuffiness, namely starting a waste gas introducing device to introduce waste gas containing SO2 and CO2, wherein the waste gas flows through a waste gas channel, a waste gas connecting mechanism, an air inlet channel and an air distribution mechanism in sequence, and finally flows into the slag ladle to be fully contacted with the steel slag;
and then secondary pressure stabilization control is carried out, namely, the air pressure in the pot body is confirmed through monitoring of the real-time monitoring device, and redundant air is discharged through real-time adjustment of the exhaust port, so that the air pressure in the pot body is stable, and the pressure stabilization lasts for a certain time.
Thirdly, replacing and decompressing, namely introducing low-temperature inert gas into the pot body through the inert gas introducing device, opening the exhaust port to replace air in the pot body 1 until the real-time monitoring device monitors that the concentration of the combustible gas in the pot body and the concentration of residual waste gas are lower than a safety set value simultaneously; the inert gas introduction means 25 is then closed and the exhaust continues through the exhaust port until the difference in pressure between the inside and outside of the pot is zero.
And step four, discharging slag and water, opening an end cover, lifting a slag ladle in the boiler body out, and opening a water discharge pipe to discharge water.
Compared with the prior art, the invention has the beneficial effects that: the waste gas containing the SO2 and the CO2 is utilized for digestion, SO that the digestion is more thorough, and the recycling of the waste gas is promoted.
As a preferred embodiment of the present invention, the exhaust gas connection mechanism includes a base detachably mounted at an outlet of the exhaust gas passage, an outer cover detachably mounted on the base, a hollow air guide column penetrating the outer cover and the base in a vertically slidable manner, and a return spring located in an inner cavity formed by the base and the outer cover in a matching manner and used for automatically returning the air guide column; the lower end of the air guide column is provided with a plurality of air inlets, and the upper end of the air guide column is provided with a plurality of air outlets. The design structure is simple, the triggering is easy, and the ventilation effect is good.
As a preferred scheme of the invention, the gas distribution mechanism comprises three annular gas distribution pipes which are uniformly distributed from top to bottom along the height direction of the slag ladle body, and two communicating pipes which are symmetrically arranged and are respectively communicated with the three annular gas distribution pipes and corresponding gas inlet channels; each annular air distribution pipe is annularly distributed along the outer wall of the slag ladle body, and a plurality of air blowing openings which are uniformly distributed and communicated with the inside of the slag ladle body are formed in each annular air distribution pipe. The design makes the contact of the introduced waste gas and the steel slag more sufficient, so that the digestion is more thorough.
In a preferred embodiment of the present invention, each of the trunnion seats includes an inner side positioning seat for defining the left and right positions of the slag ladle and having an inclined guide surface at the lower end thereof, and an outer side positioning seat for defining the front and rear positions of the slag ladle and having an inclined guide surface at the lower end thereof. The design makes the sediment package place the location more accurate to can be accurate trigger waste gas switch-on mechanism.
Furthermore, the real-time monitoring device is electrically connected with the monitoring port; the inert gas introducing device is communicated with the inert gas inlet; the waste gas introducing device is communicated with the waste gas introducing port; the control host is electrically connected with the water spraying mechanism, the exhaust port, the real-time monitoring device, the inert gas introducing device, the waste gas introducing device and the drain pipe respectively.
As a preferred scheme of the invention, in the second step or the third step, as long as the real-time monitoring device monitors that the temperature or the combustible gas concentration or the air pressure in the pot body exceeds a warning value, the control host gives an alarm and takes corresponding measures, the water spraying mechanism is opened at a proper time, the exhaust port is opened, and the drain pipe is opened at a proper time. This provides greater security.
Further, in the first step, the solid hot steel slag is solid steel slag having a particle size of less than 400 mm and a temperature of about 600 ℃.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.
Fig. 3 is a schematic structural view of the exhaust gas connection mechanism of the present invention.
Fig. 4 is a front view of a slag ladle of the present invention.
FIG. 5 is a schematic view of the fit relationship between the slag ladle and the slag ladle seat of the present invention.
The device comprises a pot body 1, a slag ladle seat 2, a waste gas channel 3, a base 4, an outer cover 5, a gas guide column 6, a gas inlet 6a, a gas outlet 6b, a reset spring 7, a bottom support 8, a water outlet 9, a gas outlet 10, a monitoring port 11, an inert gas inlet 12, a waste gas inlet 13, an end cover 14, a water spraying mechanism 14, a limiting mechanism 14b, a turnover mechanism 15, a pressing mechanism 16, a locking mechanism 17, a slag ladle 18, a slag ladle body 19, a trunnion seat 20, an inner side positioning seat 20a, an outer side positioning seat 20b, a gas inlet channel 20c, a trunnion 21, an annular gas distribution pipe 22a, a gas blowing port 23, a communicating pipe 24, a real-time monitoring device 25, an inert gas inlet device 26, a waste gas inlet device 26.
Detailed Description
As shown in fig. 1-5, the steel slag smoldering pot comprises a pot body 1, a cover closing device and a slag ladle 18 arranged inside the pot body 1; two symmetrically arranged slag ladle seats 2 for placing slag ladles 18 are arranged in the pot body 1; the lower end outside the pot body 1 is provided with a bottom support 8 and a drain pipe 9 communicated with the inside of the pot body 1; the outer side of the pot body 1 is sequentially provided with an exhaust port 10, a monitoring port 11, an inert gas inlet 12 and a waste gas inlet 13 from top to bottom; each slag ladle seat 2 is provided with an exhaust gas channel 3 communicated with an exhaust gas inlet 13; an exhaust gas connection is provided at the outlet of each of the exhaust gas channels 3.
The cover sealing device comprises an end cover 14, a turnover mechanism 15 for opening and closing the end cover 14, a pressing mechanism 16 for pressing the end cover 14, and a locking mechanism 17 for locking the end cover 14; the inner side of the end cover 14 is provided with a water spraying mechanism 14a, and the top of the end cover 14 is provided with a limiting mechanism 14b for limiting the angle position of the end cover 14.
The slag ladle 18 comprises a slag ladle body 19 and also comprises two trunnion seats 20 which are respectively arranged at two sides of the slag ladle body 19; each trunnion seat 20 is provided with a trunnion 21; the lower half part of the outer side of the slag ladle body 19 is provided with a gas distribution mechanism which is communicated with the inside of the slag ladle body 19 and is used for introducing waste gas; an air inlet channel 20c is arranged in each trunnion seat 20, and the air inlet channel 20c is communicated with an air distribution mechanism; when the slag ladle 18 is placed on the slag ladle seat 2, the trunnion seat 20 is matched with the slag ladle seat 2, and the waste gas communicating mechanism is matched and communicated with the gas inlet channel 20 c; the exhaust gas is specifically a pollutant gas containing two components of SO2 and CO 2.
The stew pan also comprises a real-time monitoring device 24, an inert gas introducing device 25, an exhaust gas introducing device 26 and a control host 27; the real-time monitoring device 24 is electrically connected with the monitoring port 11; the inert gas introducing means 25 is communicated with the inert gas inlet 12; the exhaust gas introducing device 26 is communicated with the exhaust gas introducing port 13; the control host 27 is electrically connected to the water spraying mechanism 14a, the exhaust port 10, the real-time monitoring device 24, the inert gas introducing device 25, the exhaust gas introducing device 26, and the water discharging pipe 9.
The processing method comprises the following steps:
firstly, filling slag and sealing a cover, namely pouring solid hot steel slag into a slag ladle 18; then, a slag ladle 18 filled with solid hot steel slag is placed on a slag ladle seat 2 in the pot body 1 through hoisting equipment; finally, the end cap 14 is closed and the seal is locked.
Secondly, hot stuffiness of the waste gas is carried out, namely, the water spraying mechanism 14a is started for the first time, sprayed water is contacted with the steel slag, a large amount of water vapor is generated in the inner cavity of the pot body 1, and part of water vapor permeates into the steel slag through gaps;
then, primary pressure stabilization control is carried out, namely, the air pressure in the pot body 1 is confirmed through monitoring of the real-time monitoring device 24, redundant steam is discharged through real-time adjustment of the exhaust port 10, so that the air pressure in the pot body 1 is stabilized, and the pressure stabilization lasts for a certain time, and in the process, free CaO and MgO in the steel slag react with water to generate Ca (OH)2 and Mg (OH) 2;
then, secondary hot stuffiness is carried out, namely, the waste gas introducing device 26 is started to introduce the waste gas containing two components of SO2 and CO2, the waste gas flows through the waste gas channel 3, the waste gas connecting mechanism, the gas inlet channel 20c and the gas distribution mechanism in sequence, and finally flows into the slag ladle 18 to be fully contacted with the steel slag;
and then performing secondary pressure stabilization control, namely confirming the air pressure in the pot body 1 through monitoring of the real-time monitoring device 24, discharging redundant gas through real-time adjustment of the exhaust port 10, SO that the air pressure in the pot body 1 is stabilized, and stabilizing the pressure for a certain time, wherein in the process, CO2 and SO2 react with Ca (OH)2 and Mg (OH)2 to generate CaSO3, Mg SO3, CaCO3 and Mg CO3, and the CaSO3 and Mg SO3 are further oxidized into CaSO4 and Mg SO4 by O2.
Thirdly, replacing and decompressing, namely introducing low-temperature inert gas into the pot body 1 through the inert gas introducing device 25, opening the exhaust port 10 to replace air in the pot body 1 until the real-time monitoring device 24 monitors that the concentration of the combustible gas in the pot body 1 and the concentration of residual waste gas are lower than a safety set value simultaneously; the inert gas introduction means 25 is then closed and the exhaust through the exhaust port 10 is continued until the difference in pressure between the inside and the outside of the pot 1 is zero.
And step four, discharging slag and water, opening an end cover, lifting out the slag ladle 18 in the pot body 1, and opening the water discharge pipe 9 to discharge water.
The waste gas connecting mechanism comprises a base 4 detachably arranged at the outlet of the waste gas channel 3, an outer cover 5 detachably arranged on the base 4, a hollow gas guide column 6 which can vertically penetrate through the outer cover 5 and the base 4 in a sliding manner, and a return spring 7 which is positioned in an inner cavity formed by the base 4 and the outer cover 5 in a matching manner and is used for automatically returning the gas guide column 6; the lower end of the air guide column 6 is provided with a plurality of air inlet holes 6a, and the upper end of the air guide column 6 is provided with a plurality of air outlet holes 6 b. When the slag ladle 18 is placed on the slag ladle seat 2, the air guide column 6 abuts against the upper end of the air inlet channel 20c and is pressed down, the return spring 7 is in a compressed state, the waste gas connection mechanism is connected at the moment, and waste gas in the waste gas channel 3 flows into the air guide column 6 through the air inlet hole 6a and flows into the air inlet channel 20c through the air outlet hole 6 b. When the slag ladle 18 is moved away, the air guide column 6 is automatically ejected out and reset under the action of the reset spring 7, the air inlet hole 6a is closed, and the waste gas connection mechanism is closed.
The gas distribution mechanism comprises three annular gas distribution pipes 22 which are uniformly distributed from top to bottom along the height direction of the slag ladle body 19, and also comprises two communicating pipes 23 which are symmetrically arranged and are respectively communicated with the three annular gas distribution pipes 22 and the corresponding gas inlet channels 20 c; each annular air distribution pipe 22 is annularly distributed along the outer wall of the slag ladle body 19, and a plurality of air blowing ports 22a which are uniformly distributed and communicated with the inside of the slag ladle body 19 are arranged on each annular air distribution pipe 22. After the waste gas connecting mechanism is connected, the waste gas flows into the communicating pipe 23 through the gas inlet channel 20c, then the three annular gas distribution pipes 22 are quickly filled, and finally the waste gas is blown into the slag ladle 18 through the blowing ports 22a on the annular gas distribution pipes 22, so that the waste gas is fully contacted with and reacts with the steel slag.
Each of the trunnion seats 20 includes an inner positioning seat 20a having an inclined guide surface at a lower end thereof for defining left and right positions of the slag ladle 18, and an outer positioning seat 20b having an inclined guide surface at a lower end thereof for defining front and rear positions of the slag ladle 18. Through the guide of the guide face of slope for the placing of cinder ladle is fixed a position more accurately, thereby accurate trigger waste gas switch-on mechanism.
In the second step or the third step, as long as the real-time monitoring device 24 monitors that the temperature or the combustible gas concentration or the air pressure in the pot body 1 exceeds the warning value, the control host 27 gives an alarm and takes corresponding measures, the water spraying mechanism 14a is opened at a proper time, the exhaust port 10 is opened, and the drain pipe 9 is opened at a proper time.
In the first step, the solid hot steel slag is solid steel slag with the temperature of about 600 ℃ and the granularity of less than 400 mm.
The present invention is not limited to the above-mentioned embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts according to the disclosed technical contents, and these substitutions and modifications are all within the protection scope of the present invention.
Claims (7)
1. A method for carrying out hot smoldering treatment on steel slag by using a steel slag smoldering pot is characterized by comprising the following steps of: the steel slag stewpot comprises a pot body (1), a cover sealing device and a slag ladle (18) arranged in the pot body (1); two slag ladle seats (2) for placing slag ladles (18) are arranged in the pot body (1); the lower end of the outside of the pot body (1) is provided with a bottom support (8), and a drain pipe (9) communicated with the inside of the pot body (1) is also arranged; the outer side of the pot body (1) is sequentially provided with an exhaust port (10), a monitoring port (11), an inert gas inlet (12) and a waste gas inlet (13) from top to bottom; each slag ladle seat (2) is provided with an exhaust gas channel (3) communicated with an exhaust gas inlet (13); an exhaust gas communicating mechanism is arranged at the outlet of each exhaust gas channel (3);
the cover sealing device comprises an end cover (14), a turnover mechanism (15) for opening and closing the end cover (14), a pressing mechanism (16) for pressing the end cover (14), and a locking mechanism (17) for locking the end cover (14); a water spraying mechanism (14 a) is arranged on the inner side of the end cover (14), and a limiting mechanism (14 b) used for limiting the angle position of the end cover (14) is arranged at the top of the end cover (14);
the slag ladle (18) comprises a slag ladle body (19) and also comprises two trunnion seats (20) which are respectively arranged at two sides of the slag ladle body (19); each trunnion seat (20) is provided with a trunnion (21); the lower half part of the outer side of the slag ladle body (19) is provided with a gas distribution mechanism which is communicated with the inside of the slag ladle body (19) and is used for introducing waste gas; an air inlet channel (20 c) is arranged in each trunnion seat (20), and the air inlet channel (20 c) is communicated with an air distribution mechanism; the waste gas specifically refers to polluting gas containing two components of SO2 and CO 2;
the stew pan also comprises a real-time monitoring device (24), an inert gas introducing device (25), an exhaust gas introducing device (26) and a control host (27);
the processing method comprises the following steps:
firstly, filling slag and sealing a cover, pouring solid hot steel slag into a slag ladle (18); then a slag ladle (18) filled with solid hot steel slag is placed on a slag ladle seat (2) in the pot body (1) through hoisting equipment; finally, the end cover (14) is closed and is locked and sealed;
secondly, hot stuffiness of the waste gas is carried out, namely, a water spraying mechanism (14 a) is started for the first time, sprayed water is contacted with the steel slag, a large amount of water vapor is generated in an inner cavity of the pot body (1), and partial water vapor permeates into the steel slag through gaps;
then primary pressure stabilization control is carried out, namely the air pressure in the pot body (1) is confirmed through monitoring of the real-time monitoring device (24), redundant steam is discharged through real-time adjustment of the air outlet (10), so that the air pressure in the pot body (1) is stabilized, and the pressure stabilization lasts for a certain time;
then, secondary hot stuffiness is carried out, namely, the waste gas introducing device (26) is started to introduce the waste gas containing SO2 and CO2, the waste gas flows through the waste gas channel (3), the waste gas connecting mechanism, the gas inlet channel (20 c) and the gas distribution mechanism in sequence, and finally flows into the slag ladle (18) to be fully contacted with the steel slag;
then secondary pressure stabilization control is carried out, namely the air pressure in the pot body (1) is confirmed through monitoring of the real-time monitoring device (24), redundant air is discharged through real-time adjustment of the air outlet (10), so that the air pressure in the pot body (1) is stable, and the pressure stabilization lasts for a certain time;
thirdly, replacing and decompressing, namely introducing low-temperature inert gas into the pot body (1) through the inert gas introducing device (25), opening the exhaust port (10) to replace air in the pot body (1) until the real-time monitoring device (24) monitors that the concentration of combustible gas and the concentration of residual waste gas in the pot body (1) are lower than a safety set value simultaneously; then the inert gas introducing device (25) is closed, and the gas is continuously exhausted through the exhaust port (10) until the pressure difference between the inside and the outside of the pot body (1) is zero;
and step four, deslagging and draining, opening an end cover, lifting out the slag ladle (18) in the pot body (1), and opening a drain pipe (9) to drain.
2. The method for hot smoldering steel slag by using the steel slag smoldering pot as claimed in claim 1, characterized in that: the waste gas connecting mechanism comprises a base (4) detachably mounted at an outlet of the waste gas channel (3), an outer cover (5) detachably mounted on the base (4), a hollow gas guide column (6) capable of penetrating through the outer cover (5) and the base (4) in a vertically sliding manner, and a return spring (7) which is positioned in an inner cavity formed by the base (4) and the outer cover (5) in a matched manner and is used for automatically returning the gas guide column (6);
the lower end of the air guide column (6) is provided with a plurality of air inlets (6 a), and the upper end of the air guide column (6) is provided with a plurality of air outlets (6 b).
3. The method for hot smoldering steel slag by using the steel slag smoldering pot as claimed in claim 1, characterized in that: the gas distribution mechanism comprises three annular gas distribution pipes (22) which are uniformly distributed from top to bottom along the height direction of the slag ladle body (19), and also comprises two communicating pipes (23) which are symmetrically arranged and are respectively communicated with the three annular gas distribution pipes (22) and the corresponding gas inlet channels (20 c);
each annular air distribution pipe (22) is annularly distributed along the outer wall of the slag ladle body (19), and a plurality of air blowing openings (22 a) which are uniformly distributed and communicated with the inside of the slag ladle body (19) are formed in each annular air distribution pipe (22).
4. The method for hot smoldering steel slag by using the steel slag smoldering pot as claimed in claim 1, characterized in that: each trunnion seat (20) comprises an inner side positioning seat (20 a) used for limiting the left and right positions of the slag ladle (18) and provided with an inclined guide surface at the lower end, and an outer side positioning seat (20 b) used for limiting the front and back positions of the slag ladle (18) and provided with an inclined guide surface at the lower end.
5. The method for hot smoldering steel slag by using the steel slag smoldering pot as claimed in claim 1, characterized in that: the real-time monitoring device (24) is electrically connected with the monitoring port (11); the inert gas introducing device (25) is communicated with the inert gas inlet (12); the exhaust gas introducing device (26) is communicated with the exhaust gas introducing port (13); the control host (27) is respectively electrically connected with the water spraying mechanism (14 a), the exhaust port (10), the real-time monitoring device (24), the inert gas introducing device (25), the waste gas introducing device (26) and the drain pipe (9).
6. The method for hot smoldering steel slag by using the steel slag smoldering pot as claimed in claim 1, characterized in that: in the second step or the third step, as long as the real-time monitoring device (24) monitors that the temperature or the combustible gas concentration or the air pressure in the pot body (1) exceeds a warning value, the control host (27) gives an alarm and takes corresponding measures, the water spraying mechanism (14 a) is opened timely, the exhaust port (10) is opened, and the drain pipe (9) is opened timely.
7. The method for hot smoldering steel slag by using the steel slag smoldering pot as claimed in claim 1, characterized in that: in the first step, the solid hot steel slag is solid steel slag with the temperature of about 600 ℃ and the granularity of less than 400 mm.
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| CN201910617404.8A CN111041134B (en) | 2019-07-10 | 2019-07-10 | Method for carrying out hot stuffy treatment on steel slag by using steel slag stuffy pot |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114394778A (en) * | 2022-01-24 | 2022-04-26 | 江苏省沙钢钢铁研究院有限公司 | Hot stuffy method and hot stuffy equipment for steel slag and steel slag for road engineering |
| CN114471109A (en) * | 2022-02-16 | 2022-05-13 | 江苏省沙钢钢铁研究院有限公司 | Method for co-processing steel slag and lime kiln smoke |
| CN115611534A (en) * | 2022-10-18 | 2023-01-17 | 山西太钢不锈钢股份有限公司 | Carbon solidification method for solid slag of carbon steel slag |
| CN116332566A (en) * | 2023-02-15 | 2023-06-27 | 河北通华公路材料有限公司 | Production method of steel slag raw material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114394778A (en) * | 2022-01-24 | 2022-04-26 | 江苏省沙钢钢铁研究院有限公司 | Hot stuffy method and hot stuffy equipment for steel slag and steel slag for road engineering |
| CN114394778B (en) * | 2022-01-24 | 2022-12-23 | 江苏省沙钢钢铁研究院有限公司 | Hot stuffy method and hot stuffy equipment for steel slag and steel slag for road engineering |
| CN114471109A (en) * | 2022-02-16 | 2022-05-13 | 江苏省沙钢钢铁研究院有限公司 | Method for co-processing steel slag and lime kiln smoke |
| CN115611534A (en) * | 2022-10-18 | 2023-01-17 | 山西太钢不锈钢股份有限公司 | Carbon solidification method for solid slag of carbon steel slag |
| CN116332566A (en) * | 2023-02-15 | 2023-06-27 | 河北通华公路材料有限公司 | Production method of steel slag raw material |
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Denomination of invention: A method of applying steel slag caulking to heat treat steel slag Effective date of registration: 20230823 Granted publication date: 20211126 Pledgee: Jiangsu Yangzhou Rural Commercial Bank Co.,Ltd. Gongdao Sub branch Pledgor: Jiangsu Fukai Heavy Industry Machinery Co.,Ltd. Registration number: Y2023980053413 |
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