CN212127989U - System device for semi-dry production line for calcining active magnesium oxide - Google Patents
System device for semi-dry production line for calcining active magnesium oxide Download PDFInfo
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- CN212127989U CN212127989U CN202020561159.1U CN202020561159U CN212127989U CN 212127989 U CN212127989 U CN 212127989U CN 202020561159 U CN202020561159 U CN 202020561159U CN 212127989 U CN212127989 U CN 212127989U
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Abstract
The utility model relates to a system's device for calcining active magnesium oxide semi-dry process production line, its characterized in that: a scattering dryer device, a primary preheater, a secondary preheater, a tertiary preheater, a rotary calcining kiln, a cooler and a waste gas treatment device are arranged in a system device for a semi-dry process production line for calcining active magnesium oxide, so that the active magnesium oxide product is calcined by directly using magnesite flotation concentrate powdery materials with the moisture content of 10% -15% as raw materials, and a high-quality raw material is provided for producing high-grade sintered magnesia; simultaneously, the utility model discloses also be fit for using other 10% - -15% magnesite powdery material (including magnesite flotation middlings and tailings) of moisture content as the raw materials, produce active magnesium oxide product, satisfy the needs of the required active magnesium oxide raw materials of different grades sintered magnesia.
Description
Technical Field
The utility model belongs to the technical field of refractory material production, a system's device that adopts magnesite flotation concentrate powder to do raw materials and calcine active magnesium oxide production line is related to, in particular to a system's device for calcining active magnesium oxide semi-dry process production line.
Background
At present, in the industrial production of domestic refractory materials, magnesite is calcined into active magnesium oxide through an industrial kiln, a vertical kiln system device of a reverberatory furnace for calcining magnesite blocky materials is traditionally adopted, and the vertical kiln system device of the reverberatory furnace can only obtain active magnesium oxide powder through calcining blocky materials. With the increasing decrease of high-grade magnesite due to the increase of mining amount, the flotation concentrate powder of high-grade magnesite is obtained by adopting the flotation purification production technology to the low-grade magnesite, so that the defects of the high-grade magnesite are overcome. The magnesite flotation concentrate powder is a powdery material with 10% -15% of moisture, so the problem that the magnesite flotation concentrate powder cannot be calcined in a vertical kiln system device of a reverberatory furnace is solved.
Disclosure of Invention
The utility model overcomes the defect that above-mentioned exists, the purpose is for solving in the kiln system device of calcining magnesite production active magnesium oxide, realizes calcining moisture 10% - -15% magnesite flotation concentrate powder into active magnesium oxide, makes it become the raw materials of production high-grade magnesia for refractory material, provides a system device of calcining active magnesium oxide semi-dry process production line.
The system device for calcining the active magnesium oxide semi-dry process production line of the utility model has the contents briefly described:
the utility model discloses a system's device for calcining active magnesium oxide semi-dry process production line, its characterized in that: is prepared from the following components: the device comprises a raw material bin, a quantitative feeder, a raw material chain conveyor, a scattering dryer device, a primary preheater, a secondary preheater, a tertiary preheater, a kiln tail smoke chamber, a rotary calcining kiln, a kiln hood cover, a burner, fuel, a cooler, a finished product chain conveyor, a finished product hoister, a magnesium oxide finished product warehouse, a finished product warehouse dust removal device, a waste gas treatment device and an ignition valve; the exhaust gas treatment device is provided with: the kiln tail bag-type dust remover comprises a high-temperature fan inlet valve, a high-temperature fan, a cold air valve, a dust remover inlet valve, a kiln tail bag-type dust remover device, a waste gas bypass valve, a dust remover outlet valve, a kiln tail exhaust fan and a waste gas discharge chimney, wherein a dust remover ash discharge device is arranged at the bottom of the kiln tail bag-type dust remover device.
An anti-blocking ash removal device I is arranged in the scattering dryer device; an anti-blocking ash removal device II is arranged in the primary preheater; an anti-blocking ash removal device III is arranged in the secondary preheater; an anti-blocking ash removal device IV is arranged in the tertiary preheater; an anti-blocking ash removal device V is arranged in the kiln tail smoke chamber; an anti-blocking ash removal device VI is arranged in the kiln head cover;
an air locking blanking device I is arranged at the blanking pipe of the primary preheater; an air locking blanking device II is arranged at the blanking pipe of the secondary preheater; an air locking blanking device III is arranged at the blanking pipe of the third-stage preheater;
a temperature detector and a pressure detector are respectively arranged in the scattering dryer device, the primary preheater, the secondary preheater, the tertiary preheater, the kiln tail smoke chamber, the kiln head cover and the kiln tail bag-type dust collector device;
the raw material bin is connected with the scattering dryer device through the constant feeder and the raw material chain conveyor in sequence; the scattering dryer device, the primary preheater, the secondary preheater, the tertiary preheater and the kiln tail smoke chamber are mutually connected through pipelines; the air inlet of the scattering dryer device is connected with the air outlet of the secondary preheater through a pipeline, the air outlet of the scattering dryer device is connected with the air inlet of the primary preheater through a pipeline, the air outlet of the primary preheater is connected with the waste gas treatment device through a pipeline, the air inlet of the secondary preheater is connected with the air outlet of the tertiary preheater through a pipeline, and the air inlet of the tertiary preheater is connected with the air outlet of the kiln tail smoke chamber through a pipeline;
the discharge port of the first-stage preheater is connected with an air outlet pipeline of the third-stage preheater through a material pipe, the discharge port of the second-stage preheater is connected with a flue gas outlet pipeline of the kiln tail smoke chamber through a material pipe, and the discharge port of the third-stage preheater is connected with a feeding port of the kiln tail smoke chamber through a material pipe; an air locking discharger I is arranged on a discharge material pipe of the first-stage preheater, an air locking discharger II is arranged on a discharge material pipe of the second-stage preheater, and an air locking discharger III is arranged on a discharge material pipe of the third-stage preheater; the kiln tail smoke chamber is connected with a rotary calcining kiln, the rotary calcining kiln is connected with a cooler through a kiln head cover, the cooler is connected with a magnesium oxide finished product warehouse through a finished product chain conveyor and a finished product hoister, a finished product warehouse dust removal device is arranged on the magnesium oxide finished product warehouse, and the finished product warehouse dust removal device is connected with the magnesium oxide finished product warehouse and the finished product hoister through pipelines; the burner extends into the rotary calcining kiln through a kiln head cover.
The air outlet pipeline of the primary preheater is connected with a waste gas treatment device: an air outlet pipeline of the primary preheater is connected with an air inlet of a high-temperature fan through an inlet valve of the high-temperature fan, one path of an air outlet of the high-temperature fan is connected with an air inlet of a kiln tail cloth-bag dust remover device through an inlet valve of a dust remover, the other path of the air outlet of the high-temperature fan is connected with an air inlet of a kiln tail exhaust fan through a waste gas bypass valve, an air outlet of the kiln tail cloth-bag dust remover device is connected with an air inlet of the kiln tail exhaust fan through an outlet valve of the dust remover, an air outlet of the kiln tail exhaust fan is connected with a waste gas discharge chimney, an ash discharge device of the dust remover is connected with a raw; and an air outlet pipeline of the primary preheater is simultaneously connected with the ignition valve.
The utility model discloses a system's device for calcining active magnesium oxide semi-dry process production line sets up and breaks up desiccator device, first order pre-heater, second grade pre-heater, tertiary pre-heater, rotary calcining kiln, cooler and exhaust treatment device, has realized directly utilizing the magnesite flotation concentrate powdery material that contains 10% - -15% moisture to make the raw materials, has calcined active magnesium oxide product, provides high-quality raw materials for producing high-grade sintered magnesia; simultaneously, the utility model discloses also be fit for using other 10% - -15% magnesite powdery material (including magnesite flotation middlings and tailings) of moisture content as the raw materials, produce active magnesium oxide product, satisfy the needs of the required active magnesium oxide raw materials of different grades sintered magnesia.
Drawings
FIG. 1 is a process flow diagram of a system device of a semi-dry production line for calcining active magnesium oxide;
in the figure: 1 is a raw material bin, 2 is a constant feeder, 3 is a raw material chain conveyor, 4 is a scattering dryer device, 5 is a primary preheater, 6 is a secondary preheater, 7 is a tertiary preheater, 8 is a kiln tail smoke chamber, 9 is a rotary calcining kiln, 10 is a kiln head cover, 11 is a burner, 12 is fuel, 13 is a cooler, 14 is a finished product chain conveyor, 15 is a finished product elevator, 16 is a magnesium oxide finished product bin, 17 is a finished product bin dust removal device, 18 is a waste gas treatment device, 19 is a high-temperature fan inlet valve, 20 is a high-temperature fan, 21 is a cold air valve, 22 is a dust remover inlet valve, 23 is a kiln tail cloth bag dust remover device, 24 is a waste gas bypass valve, 25 is a dust remover outlet valve, 26 is an anti-blocking tail kiln exhaust fan, 27 is a waste gas exhaust chimney, 28 is a dust remover ash removal device, 29 is an anti-blocking device I, 30 is a dust removal device II, 31 is a dust removal device, 32 is an anti-blocking ash removing device IV, 33 is an anti-blocking ash removing device V, 34 is an anti-blocking ash removing device VI, 35 is an air locking discharger I, 36 is an air locking discharger II, 37 is an air locking discharger III, and 38 is an ignition valve.
Detailed Description
The system device for calcining the active magnesium oxide semi-dry process production line is realized in the way, and is specifically explained by combining the attached drawings.
Referring to fig. 1, the system device of the semi-dry production line for calcining active magnesium oxide of the utility model is composed of: the device comprises a raw material bin 1, a quantitative feeder 2, a raw material chain conveyor 3, a scattering dryer device 4, a primary preheater 5, a secondary preheater 6, a tertiary preheater 7, a kiln tail smoke chamber 8, a rotary calcining kiln 9, a kiln head cover 10, a burner 11, fuel 12, a cooler 13, a finished product chain conveyor 14, a finished product elevator 15, a magnesium oxide finished product bin 16, a finished product bin dust removal device 17, a waste gas treatment device 18 and an ignition valve 38; the exhaust gas treatment device 18 is provided with: the kiln tail bag-type dust collector comprises a high-temperature fan inlet valve 19, a high-temperature fan 20, a cold air valve 21, a dust collector inlet valve 22, a kiln tail bag-type dust collector device 23, a waste gas bypass valve 24, a dust collector outlet valve 25, a kiln tail exhaust fan 26 and a waste gas discharge chimney 27, wherein a dust collector ash discharge device 28 is arranged at the bottom of the kiln tail bag-type dust collector device 23.
An anti-blocking ash removal device I29 is arranged in the scattering dryer device 4; an anti-blocking ash removal device II 30 is arranged in the primary preheater 5; an anti-blocking ash removal device III 31 is arranged in the secondary preheater 6; an anti-blocking ash removal device IV 32 is arranged in the tertiary preheater 7; an anti-blocking ash removal device V33 is arranged in the kiln tail smoke chamber 8; an anti-blocking ash removal device VI 34 is arranged in the kiln head cover 10;
an air locking blanking device I35 is arranged at the blanking pipe of the primary preheater 5; an air locking blanking device II 36 is arranged at the blanking pipe of the secondary preheater 6; an air locking blanking device III 37 is arranged at the blanking pipe of the third-stage preheater 7;
the scattering dryer device 4, the primary preheater 5, the secondary preheater 6, the tertiary preheater 7, the kiln tail smoke chamber 8, the kiln head cover 10 and the kiln tail cloth bag dust remover device 23 are respectively provided with a temperature detector and a pressure detector for monitoring the temperature and the pressure of the devices.
The raw material bin 1 is connected with a scattering dryer device 4 sequentially through a constant feeder 2 and a raw material chain conveyor 3.
The scattering dryer device 4, the primary preheater 5, the secondary preheater 6, the tertiary preheater 7 and the kiln tail smoke chamber 8 are connected with one another through pipelines; wherein the air inlet of the scattering dryer device 4 is connected with the air outlet of the secondary preheater 6 through a pipeline, the air outlet of the scattering dryer device 4 is connected with the air inlet of the primary preheater 5 through a pipeline, the air outlet of the primary preheater 5 is connected with the waste gas treatment device 18 through a pipeline, the air inlet of the secondary preheater 6 is connected with the air outlet of the tertiary preheater 7 through a pipeline, and the air inlet of the tertiary preheater 7 is connected with the air outlet of the kiln tail smoke chamber 8 through a pipeline;
a discharge port of the primary preheater 5 is connected with an air outlet pipeline of the tertiary preheater 7 through a material pipe, a discharge port of the secondary preheater 6 is connected with a flue gas outlet pipeline of the kiln tail smoke chamber 8 through a material pipe, and a discharge port of the tertiary preheater 7 is connected with a feeding port of the kiln tail smoke chamber 8 through a material pipe; an air locking blanking device I35 is arranged on a material pipe at a discharge port of the primary preheater 5, an air locking blanking device II 36 is arranged on a material pipe at a discharge port of the secondary preheater 6, and an air locking blanking device III 37 is arranged on a material pipe at a discharge port of the tertiary preheater 7;
the kiln tail smoke chamber 8 is connected with a rotary calcining kiln 9, the rotary calcining kiln 9 is connected with a cooler 13 through a kiln head cover 10, the cooler 13 is connected with a magnesium oxide finished product warehouse 16 through a finished product chain conveyor 14 and a finished product elevator 15, a finished product warehouse dust removal device 17 is arranged on the magnesium oxide finished product warehouse 16, and the finished product warehouse dust removal device 17 is connected with the magnesium oxide finished product warehouse 16 and the finished product elevator 15 through pipelines;
the burners 11 project into the rotary calciner 9 through a kiln head housing 10.
The air outlet pipeline of the primary preheater 5 is connected with a waste gas treatment device 18: an air outlet pipeline of the primary preheater 5 is connected with an air inlet of a high-temperature fan 20 through a high-temperature fan inlet valve 19, one path of an air outlet of the high-temperature fan 20 is connected with an air inlet of a kiln tail cloth bag dust collector device 23 through a dust collector inlet valve 22, the other path of the air outlet of the high-temperature fan 20 is connected with an air inlet of a kiln tail exhaust fan 26 through a waste gas bypass valve 24, an air outlet of the kiln tail cloth bag dust collector device 23 is connected with an air inlet of the kiln tail exhaust fan 26 through a dust collector outlet valve 25, an air outlet of the kiln tail exhaust fan 26 is connected with a waste gas discharge chimney 27, a dust collector ash discharge device 28 is connected with a raw material chain conveyor 3, and a cold air valve 21 is connected with.
The air outlet pipeline of the primary preheater 5 is simultaneously connected with the ignition valve 38.
The utility model discloses a system's device for calcining semidry process production line of active magnesium oxide, during online production:
the raw material bin 1 is filled with magnesite flotation concentrate powder with the water content of 10% -15%, and the magnesite flotation concentrate powder is conveyed into a scattering and drying device 4 through a constant feeder 2 and a raw material chain conveyor 3; the fuel 12 enters a combustor 11 and is ignited in the rotary calcining kiln through a kiln head cover 10, and high-temperature hot flue gas generated by the combustion of the fuel 12 passes through a kiln tail smoke chamber 8 and sequentially passes through a third-stage preheater 7 and a second-stage preheater 6 to enter a scattering and drying device 4; in the scattering and drying device 4, heat exchange is generated in the process that high-temperature flue gas is fully contacted and mixed with materials, the materials are dried and dispersed, the mixture with the flue gas is discharged from an air outlet of the scattering and drying device 4, enters an air inlet of the primary preheater 5 and is guided into the primary preheater 5;
in the primary preheater 5, the materials mixed in the flue gas are fully separated, pass through a material pipe from a discharge port, pass through an air locking blanking device I35, enter an air outlet pipeline of the tertiary preheater 7, are mixed with the high-temperature hot flue gas from the tertiary preheater 7, and enter a secondary preheater 6, and in the process, the materials and the high-temperature hot flue gas are subjected to heat exchange and are preheated and decomposed; the dust-containing flue gas after the materials are separated enters a waste gas treatment device 18;
in the secondary preheater 6, the materials mixed in the flue gas entering the secondary preheater 6 are fully separated, pass through a material pipe from a discharge port, pass through an air locking blanking device I36, enter an outlet pipeline of a kiln tail smoke chamber 8, are mixed with the high-temperature hot flue gas from the kiln tail smoke chamber 8, and enter a tertiary preheater 7, and in the process, the materials and the high-temperature hot flue gas are subjected to heat exchange and are preheated and decomposed; the flue gas after the separated materials enters a scattering and drying device 4;
in the three-stage preheater 7, the materials mixed in the flue gas entering the three-stage preheater 7 are fully separated, pass through a material pipe from a discharge port, pass through an air-locking blanking device I37, and enter a rotary calcining kiln 9 through a kiln tail smoke chamber 8 to start calcining; the high-temperature hot flue gas after the materials are separated enters an air outlet pipeline of the third-stage preheater 7, is mixed with the materials from a discharge port of the first-stage preheater 5 and enters the second-stage preheater 6;
in the rotary calciner 9: the materials separated and collected from the three-stage preheater 7 enter the rotary calcining kiln 9 from the kiln tail smoke chamber 8 through a material pipe through a material inlet of the air locking valve III 37 and the kiln tail smoke chamber 8; in the rotary calcining kiln 9, fuel 12 enters a combustor 11, is combusted in the kiln through a kiln head cover 10, and is calcined into an active magnesium oxide powder product, and the active magnesium oxide powder product in the kiln enters a cooler 13 from a discharge port of the rotary calcining kiln 9 through a kiln head cover 10 and a feed port of the cooler 13; natural air enters the cooling machine 13 from a discharge hole of the cooling machine 13 and is used for cooling the active magnesium oxide powder entering the cooling machine 13; hot air generated by cooling the active magnesium oxide powder enters the rotary calcining kiln 9 through a kiln head cover 10 and serves as kiln secondary air to provide combustion-supporting hot air for fuel combustion in the rotary calcining kiln 9; the cooled active magnesium oxide powder is conveyed from the outlet of the cooler 13 to a magnesium oxide finished product warehouse 16 through a finished product chain conveyor 14 and a finished product hoister 15; dust generated in the process of conveying materials by the finished product hoister 15 and the magnesium oxide finished product warehouse 16 is sucked into the finished product warehouse dust removal device 17, and the dust is filtered, collected and then enters the magnesium oxide finished product warehouse 16.
The dust-containing flue gas discharged from the outlet of the primary preheater 5 enters the exhaust gas treatment device 18.
During normal production, the inlet valve 19 of the high-temperature fan is opened, the high-temperature fan 20 operates, the inlet valve 22 of the dust remover is opened, the waste gas bypass valve 24 is closed, the outlet valve 25 of the dust remover is opened, the kiln tail cloth bag dust removal device 23 operates, the kiln tail exhaust fan 26 operates, and the ignition valve 38 is closed; the dust-containing flue gas discharged from the outlet of the primary preheater 5 is sucked by a high-temperature fan 20 through a high-temperature fan inlet valve 19 by a pipeline, and the flue gas blown out from the outlet of the high-temperature fan 20 is sent into a kiln tail cloth bag dust removal device 23 through a dust remover inlet valve 22 by a pipeline; a high-temperature resistant dust removal filter bag is arranged in the cloth bag dust removal device 23; the dust-containing smoke is filtered by a high-temperature resistant dust-removing filter bag, and the clean smoke enters a kiln tail exhaust fan 26 through a dust remover outlet valve 25 and is discharged through a waste gas discharge chimney 27; the dust in the flue gas is collected, enters a dust remover ash discharging device 28, is guided into the raw material chain conveyor 3, and enters the scattering and drying device 4 along with the materials in the raw material bin;
a cold air valve 21: when the temperature of the flue gas entering the kiln tail cloth bag dust removal device 23 reaches or is lower than the temperature of the flue gas specified by a high-temperature resistant dust removal filter bag in the kiln tail cloth bag dust removal device 23, the cold air valve 21 is closed; when the temperature of the flue gas entering the kiln tail cloth bag dust removal device 23 is higher than the maximum temperature borne by the high-temperature-resistant filter bag, the cold air valve 21 is opened, and outside cold air is sucked into the cloth bag dust removal device 23 and mixed with the flue gas entering the kiln tail cloth bag dust removal device 23, so that the temperature of the flue gas entering the kiln tail cloth bag dust removal device 23 is reduced to meet the specified requirement of the high-temperature-resistant filter bag on the temperature of the flue gas; the service life of the high-temperature-resistant dust removal filter bag is prolonged, and the flue gas purification efficiency is improved;
when a production fault occurs, in order to protect the kiln tail cloth bag dust removal device 23 from being damaged, the inlet valve 20 and the outlet valve 25 of the dust remover are closed, the waste gas bypass valve 24 is opened, so that the flue gas from the high-temperature fan 20 does not enter the kiln tail cloth bag dust removal device 23, directly enters the kiln tail exhaust fan 26 through the waste gas bypass valve 24, is discharged through the waste gas discharge chimney 27, and normal production can be recovered after the production fault treatment is completed in a short time; otherwise, the production is stopped.
When the combustor 11 is ignited, the temperature of system equipment is gradually raised, and normal feeding is not carried out, the ignition valve 38 is opened, the inlet valve 19 of the high-temperature fan is closed, and the flue gas at the outlet of the primary preheater is discharged into the atmosphere through the ignition valve 38; when the temperature of the system equipment rises to meet the requirement of feeding temperature, the waste gas treatment device 18 operates, the ignition valve 38 is closed, the flue gas at the outlet of the primary preheater enters the waste gas treatment device 18, and the system equipment is put into normal operation.
In scattering up desiccator device 4, one-level pre-heater 5, second grade pre-heater 6, tertiary pre-heater 7, kiln tail smoke chamber 8, the stifled ash removal device I29 that prevents that kiln hood 10 set up respectively, prevent stifled ash removal device II 30, prevent stifled ash removal device III 31, prevent stifled ash removal device IV 32, prevent stifled ash removal device V33, prevent stifled ash removal device VI 34, during normal production, these prevent regularly automatic start-stop of ash removal device, the clearance is piled up the material and is made the system material operation unblocked, guarantee system device normal operating.
The temperature detector and the pressure detector are arranged in the scattering dryer device 4, the primary preheater 5, the secondary preheater 6, the tertiary preheater 7, the kiln tail smoke chamber 8, the kiln head cover 10 and the kiln tail cloth bag dust remover device 22 and are used for monitoring the temperature and the pressure of the devices, and the monitored temperature and pressure data are sent to the computer control system to ensure the stability of the thermal parameters of the system device.
The utility model discloses a system's device for calcining active magnesium oxide semi-dry process production line, through setting up and break up desiccator device, one-level preheater, second grade preheater, tertiary preheater, rotary calcining kiln, cooler and exhaust treatment device, realized directly utilizing the magnesite flotation concentrate powdery material that moisture content 10% - -15% to make the raw materials, calcine out active magnesium oxide product, provide high-quality raw materials for producing high-grade sintered magnesia; simultaneously, the utility model discloses also be fit for using other 10% - -15% magnesite powdery material (including magnesite flotation middlings and tailings etc.) of moisture content as the raw materials, produce active magnesium oxide product, satisfy the needs of the required active magnesium oxide raw materials of different grades sintered magnesia.
Claims (7)
1. A system device for calcining active magnesium oxide semi-dry process production line is characterized in that: is prepared from the following components: the device comprises a raw material bin (1), a quantitative feeder (2), a raw material chain conveyor (3), a scattering dryer device (4), a primary preheater (5), a secondary preheater (6), a tertiary preheater (7), a kiln tail smoke chamber (8), a rotary calcining kiln (9), a kiln head cover (10), a burner (11), fuel (12), a cooler (13), a finished product chain conveyor (14), a finished product hoister (15), a magnesium oxide finished product warehouse (16), a finished product warehouse dust removal device (17), a waste gas treatment device (18) and an ignition valve (38); the exhaust gas treatment device (18) is provided with: the kiln tail dust removal device comprises a high-temperature fan inlet valve (19), a high-temperature fan (20), a cold air valve (21), a dust remover inlet valve (22), a kiln tail cloth bag dust remover device (23), a waste gas bypass valve (24), a dust remover outlet valve (25), a kiln tail exhaust fan (26) and a waste gas discharge chimney (27), wherein a dust remover ash discharge device (28) is arranged at the bottom of the kiln tail cloth bag dust remover device (23).
2. The system-installation of semi-dry process line for the calcination of active magnesium oxide according to claim 1, characterized in that: an anti-blocking ash removal device I (29) is arranged in the scattering dryer device (4); an anti-blocking ash removal device II (30) is arranged in the primary preheater (5); an anti-blocking ash removal device III (31) is arranged in the secondary preheater (6); an anti-blocking ash removal device IV (32) is arranged in the tertiary preheater (7); an anti-blocking ash removal device V (33) is arranged in the kiln tail smoke chamber (8); an anti-blocking ash removal device VI (34) is arranged in the kiln head cover (10).
3. The system-installation of semi-dry process line for the calcination of active magnesium oxide according to claim 1, characterized in that: an air locking blanking device I (35) is arranged in the primary preheater (5); an air locking blanking device II (36) is arranged in the secondary preheater (6); an air locking blanking device III (37) is arranged at the blanking pipe of the third-stage preheater (7).
4. The system-installation of semi-dry process line for the calcination of active magnesium oxide according to claim 1, characterized in that: the scattering dryer device (4), the primary preheater (5), the secondary preheater (6), the tertiary preheater (7), the kiln tail smoke chamber (8), the kiln head cover (10) and the kiln tail bag-type dust collector device (23) are internally provided with a temperature detector and a pressure detector respectively.
5. The system-installation of semi-dry process line for the calcination of active magnesium oxide according to claim 1, characterized in that: the raw material bin (1) is connected with the scattering dryer device (4) sequentially through the constant feeder (2) and the raw material chain conveyor (3); the scattering dryer device (4), the primary preheater (5), the secondary preheater (6), the tertiary preheater (7) and the kiln tail smoke chamber (8) are connected with each other through pipelines; wherein the air inlet of the scattering dryer device (4) is connected with the air outlet of the second-stage preheater (6) through a pipeline, the air outlet of the scattering dryer device (4) is connected with the air inlet of the first-stage preheater (5) through a pipeline, the air outlet of the first-stage preheater (5) is connected with the waste gas treatment device (18) through a pipeline, the air inlet of the second-stage preheater (6) is connected with the air outlet of the third-stage preheater (7) through a pipeline, and the air inlet of the third-stage preheater (7) is connected with the air outlet of the kiln tail smoke chamber (8) through a pipeline.
6. The system-installation of semi-dry process line for the calcination of active magnesium oxide according to claim 1, characterized in that: the discharge port of the primary preheater (5) is connected with the air outlet pipeline of the tertiary preheater (7) through a material pipe, the discharge port of the secondary preheater (6) is connected with the flue gas outlet pipeline of the kiln tail smoke chamber (8) through a material pipe, and the discharge port of the tertiary preheater (7) is connected with the feeding port of the kiln tail smoke chamber (8) through a material pipe; an air locking blanking device I (35) is arranged on a material pipe at the discharge port of the primary preheater (5), an air locking blanking device II (36) is arranged on a material pipe at the discharge port of the secondary preheater (6), and an air locking blanking device III (37) is arranged on a material pipe at the discharge port of the tertiary preheater (7); the kiln tail smoke chamber (8) is connected with a rotary calcining kiln (9), the rotary calcining kiln (9) is connected with a cooler (13) through a kiln head cover (10), the cooler (13) is connected with a magnesium oxide finished product warehouse (16) through a finished product chain conveyor (14) and a finished product hoister (15), a finished product warehouse dust removal device (17) is arranged on the magnesium oxide finished product warehouse (16), and the finished product warehouse dust removal device (17) is connected with the magnesium oxide finished product warehouse (16) and the finished product hoister (15) through pipelines; the fuel (12) is connected with the burner (11), and the burner (11) extends into the rotary calcining kiln (9) through the kiln head cover (10).
7. The system-installation of semi-dry process line for the calcination of active magnesium oxide according to claim 1, characterized in that: the air outlet pipeline of the primary preheater (5) is connected with a waste gas treatment device (18): an air outlet pipeline of the primary preheater (5) is connected with an air inlet of a high-temperature fan (20) through a high-temperature fan inlet valve (19), one path of an air outlet of the high-temperature fan (20) is connected with an air inlet of a kiln tail cloth bag dust remover device (23) through a dust remover inlet valve (22), the other path of the air outlet of the high-temperature fan (20) is connected with an air inlet of a kiln tail exhaust fan (26) through a waste gas bypass valve (24), an air outlet of the kiln tail cloth bag dust remover device (23) is connected with an air inlet of the kiln tail exhaust fan (26) through a dust remover outlet valve (25), an air outlet of the kiln tail exhaust fan (26) is connected with a waste gas exhaust chimney (27), a dust remover ash discharge device (28) is connected with a raw material chain conveyor (3), and a cold air valve (21) is connected with the air inlet of the kiln tail; an air outlet pipeline of the primary preheater (5) is simultaneously connected with the ignition valve (38).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020561159.1U CN212127989U (en) | 2020-04-16 | 2020-04-16 | System device for semi-dry production line for calcining active magnesium oxide |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020561159.1U CN212127989U (en) | 2020-04-16 | 2020-04-16 | System device for semi-dry production line for calcining active magnesium oxide |
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| CN212127989U true CN212127989U (en) | 2020-12-11 |
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| CN202020561159.1U Active CN212127989U (en) | 2020-04-16 | 2020-04-16 | System device for semi-dry production line for calcining active magnesium oxide |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113443842A (en) * | 2021-08-17 | 2021-09-28 | 辽宁劲达华杰工程技术有限公司 | Light-burned magnesium production device and production method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113443842A (en) * | 2021-08-17 | 2021-09-28 | 辽宁劲达华杰工程技术有限公司 | Light-burned magnesium production device and production method |
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