CN108101388B - Magnesium carbonate drying and calcining processing center - Google Patents
Magnesium carbonate drying and calcining processing center Download PDFInfo
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- CN108101388B CN108101388B CN201810082108.8A CN201810082108A CN108101388B CN 108101388 B CN108101388 B CN 108101388B CN 201810082108 A CN201810082108 A CN 201810082108A CN 108101388 B CN108101388 B CN 108101388B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
- C04B2/102—Preheating, burning calcining or cooling of magnesia, e.g. dead burning
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Abstract
A magnesium carbonate drying and calcining processing center belongs to the technical field of drying and calcining, and particularly relates to a magnesium carbonate drying and calcining processing center. The invention provides a magnesium carbonate drying and calcining processing center which is energy-saving and can effectively improve the heat effective utilization rate of a calcining furnace. The invention comprises an automatic burner, a heat exchange device, a spin flash dryer, a cyclone dust collector group, a first low-pressure pulse bag type dust collector, a drying induced draft fan, a calcining furnace and a calcining induced draft fan.
Description
Technical Field
The invention belongs to the technical field of drying and calcining, and particularly relates to a magnesium carbonate drying and calcining processing center.
Background
Magnesium carbonate can be used as refractory material, heat insulating material for boiler and pipeline, and additive for food, medicine, cosmetics, rubber and ink. The calcining furnace of the existing magnesium carbonate drying and calcining equipment has the problems of low heat effective utilization rate, poor calcining effect of magnesite powder and excessive saving of a large amount of heat energy in the calcining process.
Disclosure of Invention
Aiming at the problems, the invention provides the magnesium carbonate drying and calcining processing center which is energy-saving and can effectively improve the heat utilization efficiency of the calcining furnace.
In order to achieve the purpose, the invention adopts the following technical scheme that the invention comprises an automatic burner, a heat exchange device, a spin flash dryer, a cyclone dust collector group, a first low-pressure pulse bag type dust collector, a drying induced draft fan, a calcining furnace and a calcining induced draft fan, and is structurally characterized in that the cyclone dust collector group comprises a plurality of cyclone dust collectors which are connected in series, and an air outlet of the previous cyclone dust collector is connected with an air inlet of the next cyclone dust collector;
the export of the automatic combustion machine links to each other with the import of the combustion chamber of the calcining furnace, the export of the calcining furnace links to each other with the air intake of the first cyclone dust collector in the cyclone dust collector group, the discharge gate of the second cyclone dust collector in the cyclone dust collector group passes through the filling tube and links to each other with the feed inlet of the calcining furnace, the air outlet of the last cyclone dust collector in the cyclone dust collector group passes through the wind path and links to each other with the import of calcination draught fan, the export of calcination draught fan links to each other with heat transfer device's import, heat transfer device's export links to each other with the import of spin flash dryer, the export of spin flash dryer links to each other with the air intake of back-stage cyclone dust collector, the air outlet of back-stage cyclone dust collector links to each other with the import of first low pressure pulse bag collector, the export of first low pressure pulse bag collector links to each other with the import of drying draught fan, the export of drying draught fan links to each other with the lower part import of first chimney;
the discharge port of the cyclone dust collector at the rear stage is connected with the connecting pipeline between the last two cyclone dust collectors in the cyclone dust collector group, and the discharge port of the cyclone dust collector behind the second cyclone dust collector in the cyclone dust collector group is connected with the air inlet pipeline of the cyclone dust collector at the front stage.
As another preferred scheme, the heat exchange device adopts a direct-fire heat exchange device, and an air distribution port of the direct-fire heat exchange device is connected with an air outlet of an air distribution fan.
As another preferred scheme, the height of the cyclone dust collector in the cyclone dust collector group of the invention is gradually increased from front to back.
As another preferred scheme, the connecting pipeline between the last two cyclone dust collectors in the cyclone dust collector set is a U-shaped connecting pipeline, and the discharge hole of the rear-stage cyclone dust collector is connected to the lower part of the front vertical pipe of the U-shaped connecting pipeline.
As another preferred scheme, except the connecting pipeline between the last two cyclone dust collectors in the cyclone dust collector group, the connecting pipelines between other cyclone dust collectors are L-shaped connecting pipelines.
As another preferred scheme, the last cyclone dust collector and the later-stage cyclone dust collector in the cyclone dust collector group are arranged above the heat exchange device and the spin flash dryer, the first low-pressure pulse bag type dust collector is arranged below the later-stage cyclone dust collector and is higher than the heat exchange device and the spin flash dryer, and the drying induced draft fan is arranged below the first low-pressure pulse bag type dust collector.
As another preferred scheme, the discharge port of a first cyclone dust collector in the cyclone dust collector group is connected to a connecting pipeline between an air-cooled first cyclone dust collector and an air-cooled second cyclone dust collector, the air outlet of the air-cooled first cyclone dust collector is connected with the air inlet of the air-cooled second cyclone dust collector, and the air inlet of the air-cooled first cyclone dust collector is a cold air inlet and is connected with the discharge port of the air-cooled second cyclone dust collector;
the discharge port of the air-cooled first cyclone dust collector is connected with the inlet of a first spiral material conveyer, the outlet of the first spiral material conveyer is connected with the inlet at the upper end of a funnel-shaped recovery bin, and the inlet at the lower end of the funnel-shaped recovery bin is connected with the inlet at the upper end of a packing machine;
the import of hopper-shaped recovery feed bin upper end links to each other through the export of the defeated material machine of second spiral of vertical pipeline with hopper-shaped recovery feed bin top, the import of the defeated material machine of second spiral links to each other with the discharge gate of second low pressure pulse bag collector, the import of second low pressure pulse bag collector links to each other with the air outlet of air-cooled second cyclone, the export of second low pressure pulse bag collector links to each other with the import of the cooling draught fan of its below, the export of cooling draught fan links to each other with the lower part import of second chimney.
As another preferred scheme, the feed inlet of the spin flash dryer is connected with the outlet of the feeding device, the feeding device comprises a cylindrical barrel and a spiral feeder arranged at the lower end of the cylindrical barrel, the feed inlet is arranged at the upper end of the cylindrical barrel, a transverse cross scraper is arranged at the inner lower part of the cylindrical barrel, the center of the transverse cross scraper is connected with an output shaft of a motor through a speed reducer, a barrel discharge outlet is arranged at the periphery of the lower end of the cylindrical barrel, the barrel discharge outlet is connected with the feed inlet of the spiral feeder, and the discharge outlet of the spiral feeder is connected with the feed inlet of the spin flash dryer.
As another preferred scheme, the included angle between the blade of the cross scraper and the horizontal plane is 10-45 degrees.
As another preferable scheme, the included angle between the blade of the cross scraper and the horizontal plane is 15 degrees.
Secondly, the connecting pipeline between the air-cooled first cyclone dust collector and the air-cooled second cyclone dust collector is a U-shaped pipeline, the discharge hole of the first cyclone dust collector is connected to the horizontal pipe of the U-shaped pipeline, and the height of the air-cooled second cyclone dust collector is higher than that of the air-cooled first cyclone dust collector.
In addition, the cyclone dust collector group comprises four cyclone dust collectors.
The invention has the beneficial effects.
The cyclone dust collector set comprises a plurality of cyclone dust collectors, each cyclone dust collector is connected in series, the air outlet of the previous cyclone dust collector is connected with the air inlet of the next cyclone dust collector, and the calcining tail gas forms a multi-stage countercurrent preheating mode, so that the temperature of the dried material is obviously improved, the heat effective utilization rate of a calcining furnace and the calcining effect of magnesite powder (concentrate and tailings) are effectively improved, and the production quality of the calcined material is ensured.
According to the invention, the cyclone dust collectors are connected in series, the air outlet of the last cyclone dust collector in the cyclone dust collector group is connected with the inlet of the calcining induced draft fan through the air path, the outlet of the calcining induced draft fan is connected with the inlet of the heat exchange device, so that the secondary utilization of energy is realized, the problem of over-saving of a large amount of heat energy in the calcining process is solved, and the energy-saving and environment-friendly cyclone dust collector is energy-saving.
The heat exchange device is directly connected with the outlet of the calcining induced draft fan, so that the waste heat utilization during material calcination is facilitated.
Drawings
The invention is further described with reference to the following figures and detailed description. The scope of the invention is not limited to the following expressions.
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a schematic structural view of the main body part of the invention.
FIG. 3 is a schematic view of the structure of the air-cooled part of the present invention.
Fig. 4 is a schematic view of the connection structure of the spin flash dryer and the feeding device of the present invention.
Fig. 5 is a top view of fig. 4.
In the figure, 1 is a drying induced draft fan, 2 is a first chimney, 3 is a first low-pressure pulse bag type dust collector, 4 is a rear-stage cyclone dust collector, 5 is a rotary flash dryer, 6 is a heat exchange device, 7 is a calcining induced draft fan, 8 is a first cyclone dust collector in a cyclone dust collector group, 9 is a penultimate cyclone dust collector in the cyclone dust collector group, 10 is a U-shaped connecting pipeline, 11 is a second cyclone dust collector in the cyclone dust collector group, 12 is a first cyclone dust collector in the cyclone dust collector group, 13 is a calcining furnace, 14 is a combustion chamber, 15 is an automatic burner, 16 is an air-cooled first cyclone dust collector, 17 is an air-cooled second cyclone dust collector, 18 is a venturi tube, 19 is a U-shaped pipeline, 20 is a first spiral material conveying machine, 21 is a packaging machine, 22 is a funnel-shaped recycling bin, 23 is a second spiral material conveying machine, 24 is a second low-pressure pulse bag type dust collector, 25 is a cooling fan, 26 is a second chimney, 27 is a center of a transverse cross reinforcing rib, 28 is a cylindrical barrel, 29 is a transverse scraper, 30 is a cross scraper, 31 is a cross supporting platform, 32 is a vertical column supporting platform, and 34 is a vertical column supporting platform and a vertical air fan.
Detailed Description
As shown in the figure, the invention comprises an automatic burner, a heat exchange device, a rotary flash evaporation dryer, a cyclone dust collector group, a first low-pressure pulse bag type dust collector, a drying induced draft fan, a calcining furnace and a calcining induced draft fan, and is structurally characterized in that the cyclone dust collector group comprises a plurality of cyclone dust collectors which are connected in series, and the air outlet of the previous cyclone dust collector is connected with the air inlet of the next cyclone dust collector;
the outlet of the automatic burner is connected with the inlet of a combustion chamber of the calciner, the outlet of the calciner is connected with the air inlet of a first cyclone dust collector in a cyclone dust collector group, the discharge port of a second cyclone dust collector in the cyclone dust collector group is connected with the feed inlet of the calciner through a charging pipe, the air outlet of the last cyclone dust collector in the cyclone dust collector group is connected with the inlet of a calcining induced draft fan through an air path, the outlet of the calcining induced draft fan is connected with the inlet of a direct-fire heat exchange device, the outlet of the heat exchange device is connected with the inlet of a rotary flash evaporation dryer, the outlet of the rotary flash evaporation dryer is connected with the air inlet of a rear-stage cyclone dust collector, the air outlet of the rear-stage cyclone dust collector is connected with the inlet of a first low-pressure pulse bag type dust collector, the outlet of the first low-pressure pulse bag type dust collector is connected with the inlet of a drying induced draft fan, and the outlet of the drying induced draft fan is connected with the lower inlet of a first chimney;
the discharge port of the cyclone dust collector at the rear stage is connected with the connecting pipeline between the last two cyclone dust collectors in the cyclone dust collector group, and the discharge port of the cyclone dust collector behind the second cyclone dust collector in the cyclone dust collector group is connected with the air inlet pipeline of the cyclone dust collector at the front stage.
The heat exchange device adopts a direct-fire heat exchange device, and an air distribution port of the direct-fire heat exchange device is connected with an air outlet of the air distribution fan.
The height of the cyclone dust collector in the cyclone dust collector group is gradually increased from front to back.
The connecting pipeline between the last two cyclone dust collectors in the cyclone dust collector group is a U-shaped connecting pipeline, and the discharge port of the rear-stage cyclone dust collector is connected to the lower part of the front vertical pipe of the U-shaped connecting pipeline.
The cyclone dust collector group is characterized in that the connecting pipelines except the last two cyclone dust collectors are L-shaped connecting pipelines.
The last cyclone dust collector and the later stage cyclone dust collector in the cyclone dust collector group are arranged above the heat exchange device and the spin flash dryer, the first low-pressure pulse bag type dust collector is arranged below the later stage cyclone dust collector and is higher than the heat exchange device and the spin flash dryer, and the drying induced draft fan is arranged below the first low-pressure pulse bag type dust collector.
The discharge hole of a first cyclone dust collector in the cyclone dust collector group is connected to a connecting pipeline between the air-cooled first cyclone dust collector and the air-cooled second cyclone dust collector, the air outlet of the air-cooled first cyclone dust collector is connected with the air inlet of the air-cooled second cyclone dust collector, and the air inlet of the air-cooled first cyclone dust collector is a cold air inlet and is connected with the discharge hole of the air-cooled second cyclone dust collector;
the discharge port of the air-cooled first cyclone dust collector is connected with the inlet of a first spiral material conveyer, the outlet of the first spiral material conveyer is connected with the inlet at the upper end of a funnel-shaped recovery bin, and the inlet at the lower end of the funnel-shaped recovery bin is connected with the inlet at the upper end of a packing machine;
funnel-shaped recovery feed bin upper end import links to each other through vertical pipeline and the export of the defeated material machine of second spiral of leaking hopper-shaped recovery feed bin top, the import of the defeated material machine of second spiral links to each other with the discharge gate of second low pressure pulse bag collector, the import of second low pressure pulse bag collector links to each other with the air outlet of forced air cooling second cyclone, the export of second low pressure pulse bag collector links to each other with the import of the cooling draught fan of below rather than, the export of cooling draught fan links to each other with the lower part import of second chimney.
And the cold air inlet is connected with the air inlet of the air-cooled first cyclone dust collector through a venturi tube.
The materials recovered by the air-cooled first cyclone dust collector enter a recovery bin for packaging; and tail gas and fine dust of the air-cooled first cyclone dust collector enter the air-cooled second cyclone dust collector and the second low-pressure pulse bag type dust collector for recycling and packaging.
According to the invention, through the matched use of the air-cooled first cyclone dust collector and the air-cooled second cyclone dust collector, the high-temperature material output from the discharge hole of the first cyclone dust collector is effectively cooled, so that the high-temperature material can be effectively recovered, and the recovery rate is as high as 99.8%; thereby ensuring the full utilization of energy, simultaneously achieving the purpose of protecting the environment and ensuring the use of the second low-pressure pulse bag type dust collector with limited temperature resistance; ensuring that the product after production does not produce reverse reaction any more.
The feed inlet of rotatory flash dryer links to each other with material feeding unit's export, and material feeding unit includes cylindric bucket and sets up the feed screw at cylindric bucket lower extreme, and cylindric bucket upper end is the feed inlet, and the lower part is provided with horizontal cross scraper in the cylindric bucket, and the center of horizontal cross scraper links to each other through the output shaft of speed reducer with the motor, and cylindric bucket lower extreme periphery is provided with the bucket discharge gate, and the bucket discharge gate links to each other with feed screw's feed inlet, and feed screw's discharge gate links to each other with rotatory flash dryer's feed inlet.
The fluffy material problem can be solved in the rotation of scraper to seal the feed inlet of screw feeder, prevent that cold wind from passing through screw feeder and getting into in the rotatory flash drying machine, cause the hot gas flow short circuit.
The lower end of the feeding device is arranged on a support through an upright post, the support comprises an upper end supporting platform, supporting upright frames are arranged at four corners of the supporting platform, and crossed reinforcing ribs are arranged between adjacent supporting upright frames; two crossed reinforcing ribs are arranged on the upper part and the lower part between the adjacent supporting upright frames respectively.
The inner diameter of the cylindrical barrel is 1000 mm-5000 mm, and a barrel discharge port and a feed port of the spiral feeder are arranged.
The included angle between the blade of the cross scraper and the horizontal plane is 10-45 degrees.
The blade of the cross scraper forms an included angle of 15 degrees with the horizontal plane.
The connecting pipeline between the air-cooled first cyclone dust collector and the air-cooled second cyclone dust collector is a U-shaped pipeline, a discharge port of the first cyclone dust collector is connected to a transverse pipe of the U-shaped pipeline, and the height of the air-cooled second cyclone dust collector is higher than that of the air-cooled first cyclone dust collector.
The cyclone dust collector group comprises four cyclone dust collectors.
The method comprises the following steps that water-containing materials are input into a spin flash dryer through a feeding device, the dried materials are recovered through a rear-stage cyclone dust collector and a first low-pressure pulse bag type dust collector, the materials recovered by the rear-stage cyclone dust collector are conveyed to a fourth cyclone dust collector of the cyclone dust collector group, the materials recovered by the fourth cyclone dust collector of the cyclone dust collector group are conveyed to a third cyclone dust collector of the cyclone dust collector group, the materials recovered by the third cyclone dust collector of the cyclone dust collector group are conveyed to a second cyclone dust collector of the cyclone dust collector group, and the materials recovered by the second cyclone dust collector of the cyclone dust collector group are conveyed to a calcining furnace; the process from drying to heating to calcining charging is completed.
The purpose of preheating the materials is achieved through three-stage recovery of the second cyclone dust collector, the third cyclone dust collector and the fourth cyclone dust collector, the temperature of the materials can be generally increased from 60-70 ℃ to 400-500 ℃, and the purposes of waste heat recycling and energy saving are achieved.
The automatic burner produces high-temperature gas to calcine the dried material in the calcining furnace, the calcined material is recycled through a first cyclone dust collector of a cyclone dust collector group, the recycled (with the recycling rate of 98%) material is recycled through an air-cooled first cyclone dust collector and an air-cooled second cyclone dust collector to achieve cooling. Meanwhile, one part of the waste water enters a second low-pressure pulse bag type dust collector for recycling, so that the purpose of protecting the environment is achieved.
The combustion chamber, the direct-fire heat exchange device, the spiral feeder and the cyclone dust collector can adopt the combustion chamber, the direct-fire heat exchange device, the spiral feeder and the diffusion cyclone dust collector disclosed in the Chinese patent No. 2014105958799 and the name 'a drying and calcining processing center'.
It should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, not limitation, and it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention; as long as the use requirements are met, the method is within the protection scope of the invention.
Claims (2)
1. A magnesium carbonate drying and calcining processing center comprises an automatic burner, a heat exchange device, a spin flash dryer, a cyclone dust collector group, a first low-pressure pulse bag type dust collector, a drying induced draft fan, a calcining furnace and a calcining induced draft fan, and is characterized in that the cyclone dust collector group comprises four cyclone dust collectors which are connected in series, and an air outlet of the previous cyclone dust collector is connected with an air inlet of the next cyclone dust collector;
the outlet of the automatic burner is connected with the inlet of a combustion chamber of the calciner, the outlet of the calciner is connected with the air inlet of a first cyclone dust collector in a cyclone dust collector group, the discharge port of a second cyclone dust collector in the cyclone dust collector group is connected with the feed inlet of the calciner through a charging pipe, the air outlet of the last cyclone dust collector in the cyclone dust collector group is connected with the inlet of a calcining induced draft fan through an air path, the outlet of the calcining induced draft fan is connected with the inlet of a heat exchange device, the outlet of the heat exchange device is connected with the inlet of a rotary flash evaporation dryer, the outlet of the rotary flash evaporation dryer is connected with the air inlet of a later stage cyclone dust collector, the air outlet of the later stage cyclone dust collector is connected with the inlet of a first low-pressure pulse bag type dust collector, the outlet of the first low-pressure pulse bag type dust collector is connected with the inlet of a drying induced draft fan, and the outlet of the drying induced draft fan is connected with the lower inlet of a first chimney;
the discharge port of the cyclone dust collector at the rear stage is connected with the connecting pipeline between the last two cyclone dust collectors in the cyclone dust collector group, and the discharge port of the cyclone dust collector behind the second cyclone dust collector in the cyclone dust collector group is connected with the air inlet pipeline of the cyclone dust collector at the front stage;
the height of the cyclone dust collector in the cyclone dust collector group is gradually increased from front to back;
the connecting pipeline between the last two cyclone dust collectors in the cyclone dust collector group is a U-shaped connecting pipeline, and the discharge port of the rear-stage cyclone dust collector is connected to the lower part of the front vertical pipe of the U-shaped connecting pipeline;
the cyclone dust collector group comprises a plurality of cyclone dust collectors, wherein the cyclone dust collectors are connected with the cyclone dust collectors through connecting pipes;
the last cyclone dust collector and the later-stage cyclone dust collector in the cyclone dust collector group are arranged above the heat exchange device and the spin flash dryer, the first low-pressure pulse bag type dust collector is arranged below the later-stage cyclone dust collector and is higher than the heat exchange device and the spin flash dryer, and the drying induced draft fan is arranged below the first low-pressure pulse bag type dust collector;
the discharge hole of a first cyclone dust collector in the cyclone dust collector group is connected to a connecting pipeline between the air-cooled first cyclone dust collector and the air-cooled second cyclone dust collector, the air outlet of the air-cooled first cyclone dust collector is connected with the air inlet of the air-cooled second cyclone dust collector, and the air inlet of the air-cooled first cyclone dust collector is a cold air inlet and is connected with the discharge hole of the air-cooled second cyclone dust collector;
the discharge port of the air-cooled first cyclone dust collector is connected with the inlet of a first spiral material conveyer, the outlet of the first spiral material conveyer is connected with the inlet at the upper end of a funnel-shaped recovery bin, and the inlet at the lower end of the funnel-shaped recovery bin is connected with the inlet at the upper end of a packing machine;
an inlet at the upper end of the funnel-shaped recovery bin is connected with an outlet of a second spiral material conveyer above the funnel-shaped recovery bin through a vertical pipeline, an inlet of the second spiral material conveyer is connected with a discharge hole of a second low-pressure pulse bag type dust collector, an inlet of the second low-pressure pulse bag type dust collector is connected with an air outlet of an air-cooled second cyclone dust collector, an outlet of the second low-pressure pulse bag type dust collector is connected with an inlet of a cooling induced draft fan below the second low-pressure pulse bag type dust collector, and an outlet of the cooling induced draft fan is connected with an inlet at the lower part of a second chimney;
the feeding device comprises a cylindrical barrel and a spiral feeder arranged at the lower end of the cylindrical barrel, the upper end of the cylindrical barrel is provided with a feeding hole, the lower part in the cylindrical barrel is provided with a transverse cross scraper, the center of the transverse cross scraper is connected with an output shaft of a motor through a speed reducer, the periphery of the lower end of the cylindrical barrel is provided with a barrel discharging hole, the barrel discharging hole is connected with the feeding hole of the spiral feeder, and the discharging hole of the spiral feeder is connected with the feeding hole of the rotary flash dryer;
the connecting pipeline between the air-cooled first cyclone dust collector and the air-cooled second cyclone dust collector is a U-shaped pipeline, the discharge hole of the first cyclone dust collector is connected to the transverse pipe of the U-shaped pipeline, and the height of the air-cooled second cyclone dust collector is higher than that of the air-cooled first cyclone dust collector;
the method comprises the following steps that water-containing materials are input into a spin flash dryer through a feeding device, the dried materials are recovered through a rear-stage cyclone dust collector and a first low-pressure pulse bag type dust collector, the materials recovered by the rear-stage cyclone dust collector are conveyed to a fourth cyclone dust collector of the cyclone dust collector group, the materials recovered by the fourth cyclone dust collector of the cyclone dust collector group are conveyed to a third cyclone dust collector of the cyclone dust collector group, the materials recovered by the third cyclone dust collector of the cyclone dust collector group are conveyed to a second cyclone dust collector of the cyclone dust collector group, and the materials recovered by the second cyclone dust collector of the cyclone dust collector group are conveyed to a calcining furnace; completing the processes from drying, heating to calcining and feeding;
the automatic burner generates high-temperature gas to calcine the dried material in the calcining furnace, the calcined material is recovered by a first cyclone dust collector of a cyclone dust collector group, and the recovered material is recovered by an air-cooled first cyclone dust collector and an air-cooled second cyclone dust collector to achieve cooling; meanwhile, one part of the waste water enters a second low-pressure pulse bag type dust collector for recovery.
2. The magnesium carbonate drying and calcining processing center as claimed in claim 1, wherein the included angle between the blades of the cross scraper and the horizontal plane is 10-45 degrees.
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| CN201810082108.8A CN108101388B (en) | 2018-01-29 | 2018-01-29 | Magnesium carbonate drying and calcining processing center |
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| CN201810082108.8A CN108101388B (en) | 2018-01-29 | 2018-01-29 | Magnesium carbonate drying and calcining processing center |
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| CN108101388A CN108101388A (en) | 2018-06-01 |
| CN108101388B true CN108101388B (en) | 2023-03-14 |
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| CN108863114B (en) * | 2018-07-06 | 2021-09-21 | 沈阳化工大学 | Method for recycling waste heat in magnesite light burning process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203212470U (en) * | 2013-04-16 | 2013-09-25 | 中材装备集团有限公司 | Temperature-controllable suspension roaster |
| CN106115747A (en) * | 2016-08-16 | 2016-11-16 | 青海盐湖工业股份有限公司 | A kind of device utilizing magnesium hydroxide to produce magnesium oxide |
| CN207973683U (en) * | 2018-01-29 | 2018-10-16 | 沈阳东大东科干燥煅烧工程技术有限公司 | A kind of magnesium carbonate drying and calcining machining center |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203212470U (en) * | 2013-04-16 | 2013-09-25 | 中材装备集团有限公司 | Temperature-controllable suspension roaster |
| CN106115747A (en) * | 2016-08-16 | 2016-11-16 | 青海盐湖工业股份有限公司 | A kind of device utilizing magnesium hydroxide to produce magnesium oxide |
| CN207973683U (en) * | 2018-01-29 | 2018-10-16 | 沈阳东大东科干燥煅烧工程技术有限公司 | A kind of magnesium carbonate drying and calcining machining center |
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