CN219161001U - Grate cooler suitable for sodium chromate clinker cooling - Google Patents
Grate cooler suitable for sodium chromate clinker cooling Download PDFInfo
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- CN219161001U CN219161001U CN202222612317.3U CN202222612317U CN219161001U CN 219161001 U CN219161001 U CN 219161001U CN 202222612317 U CN202222612317 U CN 202222612317U CN 219161001 U CN219161001 U CN 219161001U
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- grate cooler
- cooling chamber
- hot air
- air cooling
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Abstract
A grate cooler for cooling sodium chromate clinker comprises a grate cooler shell, wherein a grate plate which is inclined downwards is arranged on the lower surface of the inner part of the grate cooler shell, a snowman pushing device is arranged at the position corresponding to a feed inlet in the grate cooler shell, and a nano heat insulation material layer and a knotting material layer are sequentially arranged on the inner wall of the grate cooler shell; the lower part of the grate cooler shell is sequentially provided with a front air cooling chamber, a middle cooling chamber and a rear air cooling chamber, each air cooling chamber is internally provided with an air cooling device respectively, the upper wall of the grate cooler shell corresponding to the front air cooling chamber is communicated with a high hot air channel, the upper wall of the grate cooler shell corresponding to the middle air cooling chamber is communicated with a hot air channel, the upper wall of the grate cooler shell corresponding to the rear air cooling chamber is communicated with an exhaust gas channel, the exhaust gas outlet of the exhaust gas channel is communicated with a cloth bag dust remover, the corresponding position of the discharging end of the grate plate is provided with a roller crusher, and a cooked trough is arranged below the roller crusher. The advantages are that: the operation is simple and convenient, the occupied area is small, the rapid cooling of the sodium chromate clinker can be realized, the adhesion of materials is avoided, and the energy is saved and the efficiency is high.
Description
Technical Field
The utility model belongs to the field of metal chromium production, and particularly relates to a grate cooler for cooling sodium chromate clinker.
Background
When chromium is produced by using chromite as raw material, firstly, the raw materials of chromite, sodium carbonate and returned slag are mixed, and then oxidized and baked by roasting kiln to obtain sodium chromate clinker, and because the clinker discharging temperature is about 1100 deg.C, after cooling, the clinker can be undergone the process of subsequent leaching production, and the chromium salt and metal chromium industry generally adopts air-cooled or water-cooled cooling cylinder as cooling equipment, and the clinker temperature can be reduced to about 200 deg.C by means of cooling cylinder. Because the cooling cylinder is open equipment, the device occupies large area, the field environment is poor, the energy recycling rate is low, the abrasion of spare parts is large, and meanwhile, when the clinker is seriously adhered to the clinker and is pelleted or kiln coating materials are treated, the clinker is manually conveyed to the jaw crusher for crushing treatment, so that the labor intensity of staff is high. The grate cooler is used as a cement clinker sintering cooling conveying device, the process is mature, but the physical properties and the process requirements of the sodium chromate clinker and the cement clinker are different, the cement clinker only needs to be cooled from 1300 ℃ to 700 ℃, the cooling range of the sodium chromate clinker is far larger than that of the cement clinker, the content of low-melting-point oxides and liquid phase in the sodium chromate clinker is high, the clinker is seriously adhered and pelleted, and the discharging granularity is 20-30 times larger than that of the standard, so that the grate cooler is not suitable for cooling the sodium chromate clinker.
Disclosure of Invention
The utility model aims to solve the technical problem of providing the grate cooler for cooling the sodium chromate clinker, which has the advantages of small occupied area, simple and convenient operation, material adhesion avoidance, energy conservation and high efficiency.
The utility model is realized in the following way:
the utility model provides a comb cold machine for sodium chromate clinker cooling, includes comb cold machine casing, is equipped with the comb board of downward sloping at comb cold machine casing internal lower surface, is provided with snowman device in comb cold machine casing corresponding feed inlet position, its characterized in that: at least two snowman devices are arranged, and a nano heat insulation material layer and a knotting material layer are sequentially arranged on the top and the inner walls of the two sides of the grate cooler shell; the lower part of the grate cooler shell is sequentially provided with a front air cooling chamber, a middle air cooling chamber and a rear air cooling chamber along the discharging direction, an air cooling device is respectively arranged in each air cooling chamber, the upper wall of the grate cooler shell corresponding to the front air cooling chamber is communicated with a high hot air channel, the upper wall of the grate cooler shell corresponding to the middle air cooling chamber is communicated with a hot air channel, the upper wall of the grate cooler shell corresponding to the rear air cooling chamber is communicated with an exhaust gas channel, an exhaust gas outlet of the exhaust gas channel is communicated with a cloth bag dust remover, a roller crusher is arranged at a corresponding position of the discharging end of the grate plate, and a ripening trough is arranged below the roller crusher.
Further, a hot air outlet of the high hot air channel is connected with a roasting kiln, the high hot air channel is communicated with the kiln tail of the roasting kiln, and an induced draft fan I is arranged on the high hot air channel.
Further, a hot air outlet of the hot air channel is connected with a coal mill, and a draught fan II is arranged on the hot air channel.
Further, the snowman device is provided with two devices so as to facilitate the treatment of sodium chromate high-temperature clinker with larger clinker viscosity.
Further, the thickness of the knotting material layer is 300mm, and the nanometer heat insulation material layer is a WDS nanometer micropore heat insulation board so as to ensure that waste heat is not dissipated and avoid personnel scalding caused by overheating of a grate cooler shell.
Further, an induced draft fan III is connected to an exhaust port of the bag-type dust collector.
The beneficial effects of the utility model are as follows:
because the grate cooler is adopted to replace an air-cooled or water-cooled cooling cylinder, the occupied area of the device is reduced, and the operation is more convenient; a plurality of snowman devices are combined with the roller crusher, so that the large discharging granularity caused by overlarge viscosity is avoided; the temperature difference between the ambient temperature of each air cooling chamber and the temperature of sodium chromate clinker is increased, and hot air obtained through heat exchange is rapidly discharged through a high hot air channel, a hot air channel and an exhaust gas channel, so that the rapid cooling of the sodium chromate clinker can be realized; due to the arrangement of the knotting material layer and the nano heat insulation material layer, heat waste is reduced, and the temperature of the shell of the grate cooler is low, so that scalding of operators is avoided; the high hot air channel and the hot air channel supply heat for the roasting kiln and the coal mill respectively, so that the energy recycling is ensured, and the energy is saved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is an enlarged view of a portion a in fig. 1.
In the figure: the device comprises a 1-grate cooler shell, a 2-grate plate, a 3-snowman device, a 4-nanometer heat insulation material layer, a 5-knotting material layer, a 6-front air cooling chamber, a 7-middle air cooling chamber, an 8-rear air cooling chamber, a 9-air cooling device I, a 10-air cooling device II, a 11-air cooling device III, a 12-high hot air channel, a 13-hot air channel, a 14-waste gas channel, a 15-bag dust collector, a 16-induced draft fan I, a 17-induced draft fan II, a 18-induced draft fan III, a 19-roller crusher, a 20-ripening trough, a 21-roasting kiln and a 22-coal mill.
Detailed Description
As shown in the figure, the grate cooler for cooling sodium chromate clinker comprises a grate cooler shell 1, wherein a grate plate 2 inclining downwards is arranged on the lower surface inside the grate cooler shell 1, snowman devices 3 matched with the grate plate 2 are arranged in the grate cooler shell 1 at positions corresponding to feed inlets, and at least two snowman devices 3 are arranged, and in the embodiment, two are taken as an example. The top and the inner walls of two sides of the grate cooler shell 1 are sequentially provided with a nanometer heat insulation material layer 4 and a knotting material layer 5, the thickness of the knotting material layer 5 is 300mm, and the nanometer heat insulation material layer 4 is a WDS nanometer micropore heat insulation board. The lower part of the grate cooler shell 1 is sequentially provided with a front air cooling chamber 6, a middle air cooling chamber 7 and a rear air cooling chamber 8 along the discharging direction, an air cooling device I9, an air cooling device II 10 and an air cooling device III 11 are respectively arranged in each air cooling chamber, the upper wall of the grate cooler shell 1 corresponding to the front air cooling chamber 6 is communicated with a high hot air channel 12, the hot air outlet of the high hot air channel 12 is connected with a roasting kiln 21, the high hot air channel 12 is communicated with the kiln tail of the roasting kiln 21, an induced draft fan I16 is arranged on the high hot air channel 12, the upper wall of the grate cooler shell 1 corresponding to the middle air cooling chamber 7 is communicated with a hot air channel 13, the hot air outlet of the hot air channel 13 is connected with a coal mill 22, the hot air channel 13 is provided with an induced draft fan II 17, the upper wall of the grate cooler shell 1 corresponding to the rear air cooling chamber 8 is communicated with an exhaust gas channel 14, the exhaust gas outlet of the exhaust gas channel 14 is communicated with a bag dust remover 15, and the exhaust outlet of the bag dust remover 15 is connected with an induced draft fan III. The tail of the grate plate 2 is provided with a roller crusher 19 at a corresponding position, and a cooked material tank 20 is arranged below the roller crusher 19.
When the kiln is used, sodium chromate high-temperature clinker produced in the roasting kiln 21 is put into a grate cooler, the sodium chromate high-temperature clinker falls on the grate plates 2 and moves forwards on the grate plates 2, at the moment, the clinker temperature is 1100 ℃, the air cooling device I9 operates, high-pressure cold air is generated in the front air cooling chamber 6, the clinker is cooled by blowing in a clinker layer through the grate plates 2, the cold air is changed into 400-500 ℃ high-temperature hot air after passing through the clinker layer, and the hot air is introduced into the kiln tail of the roasting kiln 21 through the high-temperature air channel 12 by the induced draft fan I16 and enters the roasting kiln 21 as combustion air to provide heat for the roasting kiln 21. The clinker moves forward and moves to the grid plate 2 above the middle air cooling chamber 7, the air cooling device II 10 operates, high-pressure cold air is generated in the middle air cooling chamber 7, the clinker is continuously blown into the clinker layer through the grid plate 2, the clinker layer is cooled, the cold air becomes hot air with the temperature of 200-230 ℃ after passing through the clinker layer, and the hot air is discharged into the coal mill 22 through the hot air channel 13 by the induced draft fan II 17 to dry the coal dust. The clinker moves to the grid plate 2 above the rear air cooling chamber 8, the air cooling device III 11 runs, high-pressure cold air is generated in the rear air cooling chamber 8, the clinker is blown into the clinker layer through the grid plate 2 to continuously cool the clinker layer, the cold air is changed into low-temperature hot air with the temperature of 150-180 ℃, the low-temperature hot air enters the bag-type dust collector 15 through the exhaust gas channel 14 through the induced draft fan III 18, and the bag-type dust collector is emptied after dust collection treatment. After three-stage cooling, the sodium chromate high-temperature clinker is cooled to clinker with the temperature lower than 200 ℃, falls into a roller crusher 19 from the discharge end of a grate plate, is crushed by the roller crusher 19, has the granularity smaller than 25mm, and enters a clinker tank 20 to wait for the next process. The two snowman devices 3 are started every 15min, and the sodium chromate high-temperature clinker accumulated at the blanking point is removed.
Claims (5)
1. The utility model provides a comb cold machine suitable for sodium chromate clinker cooling, includes comb cold machine casing, is equipped with the comb board of downward sloping at comb cold machine casing internal lower surface, is provided with snowman device, characterized by in comb cold machine casing internal correspondence feed inlet position: at least two snowman devices are arranged, and a nano heat insulation material layer and a knotting material layer are sequentially arranged on the inner wall of the grate cooler shell; the lower part of the grate cooler shell is sequentially provided with a front air cooling chamber, a middle cooling chamber and a rear air cooling chamber along the discharging direction, each air cooling chamber is internally provided with an air cooling device respectively, the upper wall of the grate cooler shell corresponding to the front air cooling chamber is communicated with a high hot air channel, the upper wall of the grate cooler shell corresponding to the middle air cooling chamber is communicated with a hot air channel, the upper wall of the grate cooler shell corresponding to the rear air cooling chamber is communicated with an exhaust gas channel, the exhaust gas outlet of the exhaust gas channel is communicated with a cloth bag dust remover, the corresponding position of the discharging end of the grate plate is provided with a roller crusher, and a ripening trough is arranged below the roller crusher.
2. The grate cooler for sodium chromate clinker cooling of claim 1, wherein: the hot air outlet of the high hot air channel is connected with a roasting kiln, the high hot air channel is communicated with the kiln tail of the roasting kiln, and an induced draft fan I is arranged on the high hot air channel.
3. The grate cooler for sodium chromate clinker cooling of claim 1, wherein: the hot air outlet of the hot air channel is connected with a coal mill, and the hot air channel is provided with an induced draft fan II.
4. The grate cooler for sodium chromate clinker cooling of claim 1, wherein: and an induced draft fan III is connected to the exhaust port of the bag-type dust collector.
5. The grate cooler for sodium chromate clinker cooling of claim 1, wherein: the thickness of the knotting material layer is 300mm, and the nanometer heat insulation material layer is a WDS nanometer micropore heat insulation board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222612317.3U CN219161001U (en) | 2022-09-30 | 2022-09-30 | Grate cooler suitable for sodium chromate clinker cooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222612317.3U CN219161001U (en) | 2022-09-30 | 2022-09-30 | Grate cooler suitable for sodium chromate clinker cooling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219161001U true CN219161001U (en) | 2023-06-09 |
Family
ID=86620184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222612317.3U Active CN219161001U (en) | 2022-09-30 | 2022-09-30 | Grate cooler suitable for sodium chromate clinker cooling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219161001U (en) |
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2022
- 2022-09-30 CN CN202222612317.3U patent/CN219161001U/en active Active
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