CN210559432U - Device for preparing high-purity calcium carbonate - Google Patents
Device for preparing high-purity calcium carbonate Download PDFInfo
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- CN210559432U CN210559432U CN201921332048.7U CN201921332048U CN210559432U CN 210559432 U CN210559432 U CN 210559432U CN 201921332048 U CN201921332048 U CN 201921332048U CN 210559432 U CN210559432 U CN 210559432U
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- calcium carbonate
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- centrifugal pump
- filter tank
- filter
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- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title claims abstract description 176
- 229910000019 calcium carbonate Inorganic materials 0.000 title claims abstract description 88
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 72
- 238000002386 leaching Methods 0.000 claims abstract description 53
- 238000003763 carbonization Methods 0.000 claims abstract description 40
- 238000006243 chemical reaction Methods 0.000 claims abstract description 39
- 239000007788 liquid Substances 0.000 claims abstract description 32
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000203 mixture Substances 0.000 claims abstract description 14
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 13
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 13
- 238000002347 injection Methods 0.000 claims abstract description 11
- 239000007924 injection Substances 0.000 claims abstract description 11
- 239000012065 filter cake Substances 0.000 claims description 23
- 239000000706 filtrate Substances 0.000 claims description 22
- 238000001914 filtration Methods 0.000 claims description 20
- 238000005406 washing Methods 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 abstract description 13
- 239000013049 sediment Substances 0.000 abstract 1
- 150000003863 ammonium salts Chemical class 0.000 description 18
- 239000012266 salt solution Substances 0.000 description 18
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 13
- 238000001035 drying Methods 0.000 description 12
- 159000000007 calcium salts Chemical class 0.000 description 11
- 239000000463 material Substances 0.000 description 9
- 238000005086 pumping Methods 0.000 description 9
- 239000002893 slag Substances 0.000 description 9
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 8
- 239000000292 calcium oxide Substances 0.000 description 8
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 8
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 7
- 239000000920 calcium hydroxide Substances 0.000 description 7
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 7
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 6
- 229910021529 ammonia Inorganic materials 0.000 description 6
- 235000011114 ammonium hydroxide Nutrition 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000000047 product Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 238000010000 carbonizing Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000000967 suction filtration Methods 0.000 description 2
- 229910021532 Calcite Inorganic materials 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 239000005997 Calcium carbide Substances 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- -1 papermaking Polymers 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 description 1
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- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The utility model discloses a device for preparing high-purity calcium carbonate, which comprises a carbonization reaction tank, a distilled water collecting tank, a calcium carbonate filter tank, a leaching residue filter tank, a first centrifugal pump, a second centrifugal pump, a water injection pump and a carbon dioxide inlet end; the carbonization reaction tank, the calcium carbonate filter-tank, first centrifugal pump passes through the pipeline and constitutes closed circuit, the distilled water collecting vat, the second centrifugal pump, the water jet pump constitutes closed circuit, the calcium carbonate filter-tank, it is the same to leach the sediment filter-tank structure, all be located directly over the carbonization reaction tank, all at the first centrifugal pump liquid outlet of top parallel connection, all at a branch road of top parallel connection second centrifugal pump liquid outlet, all at the gas entry end of side parallel connection water jet pump, all connect the carbonization reaction tank in the bottom, another branch road of second centrifugal pump exit end is connected to water jet pump liquid entry end, the distilled water collecting vat under the gas-liquid mixture exit end connection, carbon dioxide access port end is connected on carbonization reaction tank upper portion.
Description
Technical Field
The utility model belongs to the inorganic chemical industry field, concretely relates to preparation high-purity calcium carbonate circulation apparatus for producing with calcium oxide or calcium hydroxide.
Background
The light calcium carbonate is used as high-quality pigment and filler, and has wide application in the fields of plastics, papermaking, rubber, coating, printing ink, daily chemicals and the like. The purity, whiteness and granularity are important indexes of the light calcium carbonate, and determine the performances such as dispersibility, oil absorption and the like and the application field of the light calcium carbonate, and the high-purity and fine-grained light calcium carbonate is the development trend of the industry.
The process for preparing light calcium carbonate is carried out by calcining limestone, calcite, etc. at high temperature to obtain calcium lime, adding water, digesting, charging carbon dioxide, carbonizing, filtering and drying to obtain target product.
It is reported that calcined calcium oxide is used as a raw material, ammonium salt is used for leaching, insoluble impurities are removed by filtration, then carbonization is carried out to obtain calcium carbonate, and the ammonium salt is recycled (Chengming, a circulation method is used for preparing high-purity superfine calcium carbonate [ J ], comprehensive utilization of mineral products is 2004,2:15-17, and US 9725330). The method has high product purity, accords with the green production principle of raw material recycling, but is accompanied with ammonia water generation in the production process, and the ammonia water is easily volatilized and overflows in the processes of filtering, washing and drying calcium carbonate and leaching residue solids, so that adverse effects are generated on the production environment and the ecological environment, and meanwhile, an ammonia still and huge equipment for storing ammonia are required in the common production process, so that the investment is large and the occupied area is large.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to above technical defect and imperfect, provide the device and the application method of preparation calcium carbonate, can guarantee that ammonia is sealed, prevent to volatilize the polluted air, guarantee to prepare out fine grain diameter high purity calcium carbonate simultaneously, the usage prospect is extensive.
The technical scheme adopted for realizing the purpose is as follows:
a device for preparing high-purity calcium carbonate is characterized by comprising the following structures: the device comprises a carbonization reaction tank, a distilled water collecting tank, a calcium carbonate filter tank, a leaching residue filter tank, a first centrifugal pump, a second centrifugal pump, a water injection pump and a carbon dioxide inlet end; the carbonization reaction tank, the calcium carbonate filter tank and the first centrifugal pump form a closed loop through pipelines; the distilled water collecting tank, the second centrifugal pump and the water spraying pump form a closed loop; the calcium carbonate filter tank and the leaching residue filter tank are of the same structure, are both positioned right above the carbonization reaction tank, are respectively connected with a liquid outlet of a first centrifugal pump at the upper part, are respectively connected with a branch of a liquid outlet of a second centrifugal pump at the upper part, are respectively connected with a gas inlet end of a water injection pump at the side surface, and are respectively connected with the carbonization reaction tank at the bottom; the liquid inlet end of the water jet pump is connected with the other branch of the outlet end of the second centrifugal pump, and the outlet end of the gas-liquid mixture is connected with a distilled water collecting tank right below; the carbon dioxide inlet end is connected to the upper part of the carbonization reaction tank; a valve a is arranged on a pipeline between the first centrifugal pump and the calcium carbonate filter tank, and a valve c is arranged on a pipeline between the first centrifugal pump and the leaching residue filter tank; a valve b is arranged on a pipeline between the second centrifugal pump and the calcium carbonate filter tank, a valve d is arranged on a pipeline between the second centrifugal pump and the leaching residue filter tank, and a valve g is arranged on a pipeline between the second centrifugal pump and the water jet pump; and a valve e is arranged on a pipeline between the water injection pump and the calcium carbonate filter tank, and a valve f is arranged on a pipeline between the water injection pump and the leaching residue filter tank.
In the technical scheme, the calcium carbonate filter tank and the leaching residue filter tank both comprise the following structures: a filter cake cylinder, a filtrate cylinder, a vacuum-pumping gas outlet end, a washing water inlet end, a leaching solid-liquid inlet end, a filtrate outlet end, a dried filter cake outlet end, a filter plate and a stirring device; the filter cake cylinder is arranged right above the filtrate cylinder and is separated by a filter plate; the outlet end is positioned at the upper part of the side surface of the filtrate cylinder, the washing water inlet end and the leaching solid-liquid inlet end are positioned at the top of the filter cake cylinder, the filtrate outlet end is positioned at the bottom of the filtrate cylinder, the outlet end is positioned at the lower part of the side surface of the filter cake cylinder, and the stirring device is positioned in the middle of the filter cake cylinder. The exit end is the material exit end after the drying, and the filter divides into two parts about the cartridge filter, and lower part is used for temporary storage filtrating, and the upper portion is used for filtering, washing, drying and temporary storage filter cake, and agitating unit is used for mixing the filter cake, promotes to filter, and dry and solid material discharge.
In the technical scheme, the calcium carbonate filter tank and the leaching residue filter tank also comprise a water bath heating structure at the position of the filtrate cylinder, and are positioned at the periphery of the cylinder body, and the water bath heating structure can promote the drying of calcium carbonate or leaching residue, thereby improving the production rate.
In the technical scheme, the calcium carbonate filter tank and the leaching residue filter tank further comprise a water bath heating structure at the position of the filtrate cylinder, the water bath heating structure is positioned at the periphery of the cylinder, and the water bath heating structure promotes the water in the filter tank to evaporate and enter the water collecting tank, so that the water balance of the water tank is ensured.
In the technical scheme, the periphery of the water collecting tank is also provided with a water bath temperature control jacket, so that the capacity of generating negative pressure by the water jet pump can be improved by heating or cooling, and the solubility of ammonia in the water tank can be reduced.
The method for preparing the high-purity calcium carbonate by adopting the device comprises the following steps:
1) a preparation stage, in which distilled water is added in advance into the water collecting tank 2;
2) in the leaching stage, ammonium salt solution is added into the carbonization reaction tank 1, and materials containing calcium hydroxide or calcium oxide are added into the carbonization reaction tank 1 and stirred to generate a solid-liquid mixture of soluble calcium salt, ammonia water and solid slag;
3) filtering leached residues, removing impurities, and leaching simultaneously, starting a first centrifugal pump 5, pumping the solid-liquid mixture obtained by leaching in the step 2) into a leached residue filter tank 4, starting a second centrifugal pump 6, vacuumizing and filtering the leached residue filter tank 4, adding an ammonium salt solution into a carbonization reaction tank 1, adding a material containing calcium hydroxide or calcium oxide into the carbonization reaction tank 1, and stirring to generate a solid-liquid mixture of soluble calcium salt, ammonia water and solid residues;
4) filtering leached residues, removing impurities, carbonizing and simultaneously carrying out a stage, starting a first centrifugal pump 5, pumping the solid-liquid mixture obtained by leaching in the step 3) into a leached residue filter tank 4, starting a second centrifugal pump 6, vacuumizing the leached residue filter tank 4, carrying out suction filtration, introducing the calcium salt in the step 3) into a carbonization reaction tank 1, and introducing carbon dioxide to react to obtain a solid-liquid mixture of calcium carbonate and ammonium salt solution;
5) performing calcium carbonate filtration-carbonization at the same time, starting a first centrifugal pump 5, pumping the calcium carbonate and ammonium salt solution obtained in the step 4) into a calcium carbonate filter tank 3, starting a second centrifugal pump 6, vacuumizing and filtering the calcium carbonate filter tank 3, introducing the calcium salt solution obtained in the leaching residue filter tank 4 in the step 4) into a carbonization reaction tank 1, and introducing carbon dioxide for carbonization to obtain calcium carbonate and ammonium salt solution;
6) performing calcium carbonate filtration-leaching simultaneously, starting a first centrifugal pump 5, pumping the calcium carbonate and ammonium salt solution obtained in the step 5) into a calcium carbonate filter tank 3, starting a second centrifugal pump 6, vacuumizing and filtering the calcium carbonate filter tank 3, introducing the ammonium salt solution obtained in the step 5) into a carbonization reaction tank 1, and adding calcium oxide or calcium hydroxide to obtain a calcium salt solution;
7) repeating the steps 3) -6), entering the next reaction period, and circularly producing calcium carbonate for multiple times;
8) washing and drying the calcium carbonate and the leaching slag and discharging the materials, opening a valve b and a valve d, opening a second centrifugal pump 6, injecting distilled water into a calcium carbonate filter tank 3 and a leaching slag filter tank 4 for washing, closing the valve b and the valve d, vacuumizing and drying the calcium carbonate filter tank 3 and the leaching slag filter tank 4, and discharging the materials.
Because the device has the functions of impurity removal, reaction, filtration, washing and drying, does not depend on additional washing water, can prevent ammonia from overflowing, and is convenient and clean to produce.
The utility model has the advantages that: 1) ammonia and ammonium salt are recycled in the process, actual consumption is avoided, and cost is reduced; 2) the calcium carbonate product has high purity, fine particle size and wide application potential; 3) the operation under the sealing condition prevents ammonia gas from overflowing and protects the environment; 4) the reaction, the filtration, the washing and the drying can be carried out in the same device, so that the reaction, the filtration, the washing and the drying are convenient and fast, and the product transfer pollution is avoided; 5) the device has high utilization rate, and in the cycle operation, the ammonium salt leaching, the leaching residue filtering, the calcium salt carbonization and the calcium carbonate filtering are alternately carried out, the device is not stopped, and the yield can be maximized.
Drawings
Fig. 1 is a diagram of the apparatus for producing calcium carbonate according to the present invention.
FIG. 2 is a drawing of the calcium carbonate filter tank or leaching residue filter tank of the present invention.
Detailed Description
The invention will be further explained with reference to the following figures and examples:
the device for preparing the high-purity calcium carbonate is constructed and comprises the following structure: the device comprises a carbonization reaction tank 1, a distilled water collecting tank 2, a calcium carbonate filter tank 3, a leaching residue filter tank 4, a first centrifugal pump 5, a second centrifugal pump 6, a water injection pump 7 and a carbon dioxide inlet end 8; the carbonization reaction tank 1, the calcium carbonate filter tank 3 and the first centrifugal pump 5 form a closed loop through pipelines; the distilled water collecting tank 2, the second centrifugal pump 6 and the water spraying pump 7 form a closed loop; the calcium carbonate filter tank 3 and the leaching residue filter tank 4 are identical in structure, are both positioned right above the carbonization reaction tank 1, are respectively connected with the liquid outlets of the first centrifugal pump 5 at the upper part, are respectively connected with one branch of the liquid outlet of the second centrifugal pump 6 at the upper part, are respectively connected with the gas inlet end of the water jet pump 7 at the side surface, and are respectively connected with the carbonization reaction tank 1 at the bottom; the liquid inlet end of the water jet pump 7 is connected with the other branch of the outlet end of the second centrifugal pump 6, and the outlet end of the gas-liquid mixture is connected with the distilled water collecting tank 2 right below; the carbon dioxide inlet end 8 is connected to the upper part of the carbonization reaction tank; a valve a is arranged on a pipeline between the first centrifugal pump 5 and the calcium carbonate filter tank 3, and a valve c is arranged on a pipeline between the first centrifugal pump 5 and the leaching residue filter tank 4; a valve b is arranged on a pipeline between the second centrifugal pump 6 and the calcium carbonate filter tank 3, a valve d is arranged on a pipeline between the second centrifugal pump 6 and the leaching residue filter tank 4, and a valve g is arranged on a pipeline between the second centrifugal pump 6 and the water jet pump 7; a valve e is arranged on a pipeline between the water injection pump 7 and the calcium carbonate filter tank 3, and a valve f is arranged on a pipeline between the water injection pump 7 and the leaching residue filter tank 4.
The calcium carbonate filter tank 3 and the leaching residue filter tank 4 both comprise the following structures: a filter cake cylinder A1, a filtrate cylinder A2, a vacuumized gas outlet end A, a washing water inlet end B, a leached solid-liquid inlet end C, a filtrate outlet end D, a dried filter cake outlet end E, a filter plate F and a stirring device G; the filter cake cylinder A1 is arranged right above the filtrate cylinder A2 and is separated by a filter plate F; the outlet end A is positioned at the upper part of the side surface of the filtrate cylinder A2, the washing water inlet end B and the leaching solid-liquid inlet end C are positioned at the top of the filter cake cylinder A1, the filtrate outlet end D is positioned at the bottom of the filtrate cylinder A2, the outlet end E is positioned at the lower part of the side surface of the filter cake cylinder A1, and the stirring device G is positioned in the middle of the filter cake cylinder A1.
The calcium carbonate filter tank 3 and the leaching residue filter tank 4 also comprise a water bath heating structure H1 at the position of the filter cake cylinder A1 and are positioned at the periphery of the cylinder body; the calcium carbonate filter tank 3 and the leaching residue filter tank 4 also comprise a water bath heating structure H2 at the position of the filtrate cylinder A2 and are positioned at the periphery of the cylinder body; a water bath temperature control jacket is arranged at the periphery of the water collecting tank 2.
The device constructed by the embodiment is adopted to produce high-purity calcium carbonate, and comprises the following steps:
1) a preparation stage, in which distilled water is added in advance into the water collecting tank 2;
2) in the leaching stage, ammonium salt solution is added into the carbonization reaction tank 1, and materials containing calcium hydroxide or calcium oxide are added into the carbonization reaction tank 1 and stirred to generate a solid-liquid mixture of soluble calcium salt, ammonia water and solid slag;
3) filtering leached residues, removing impurities, and leaching simultaneously, starting a first centrifugal pump 5, pumping the solid-liquid mixture obtained by leaching in the step 2) into a leached residue filter tank 4, starting a second centrifugal pump 6, vacuumizing and filtering the leached residue filter tank 4, adding an ammonium salt solution into a carbonization reaction tank 1, adding a material containing calcium hydroxide or calcium oxide into the carbonization reaction tank 1, and stirring to generate a solid-liquid mixture of soluble calcium salt, ammonia water and solid residues;
4) filtering leached residues, removing impurities, carbonizing and simultaneously carrying out a stage, starting a first centrifugal pump 5, pumping the solid-liquid mixture obtained by leaching in the step 3) into a leached residue filter tank 4, starting a second centrifugal pump 6, vacuumizing the leached residue filter tank 4, carrying out suction filtration, introducing the calcium salt in the step 3) into a carbonization reaction tank 1, and introducing carbon dioxide to react to obtain a solid-liquid mixture of calcium carbonate and ammonium salt solution;
5) performing calcium carbonate filtration-carbonization at the same time, starting a first centrifugal pump 5, pumping the calcium carbonate and ammonium salt solution obtained in the step 4) into a calcium carbonate filter tank 3, starting a second centrifugal pump 6, vacuumizing and filtering the calcium carbonate filter tank 3, introducing the calcium salt solution obtained in the leaching residue filter tank 4 in the step 4) into a carbonization reaction tank 1, and introducing carbon dioxide for carbonization to obtain calcium carbonate and ammonium salt solution;
6) performing calcium carbonate filtration-leaching simultaneously, starting a first centrifugal pump 5, pumping the calcium carbonate and ammonium salt solution obtained in the step 5) into a calcium carbonate filter tank 3, starting a second centrifugal pump 6, vacuumizing and filtering the calcium carbonate filter tank 3, introducing the ammonium salt solution obtained in the step 5) into a carbonization reaction tank 1, and adding calcium oxide or calcium hydroxide to obtain a calcium salt solution;
7) repeating the steps 3) -6), entering the next reaction period, and circularly producing calcium carbonate for multiple times;
8) washing and drying the calcium carbonate and the leaching slag and discharging the materials, opening a valve b and a valve d, opening a second centrifugal pump 6, injecting distilled water into a calcium carbonate filter tank 3 and a leaching slag filter tank 4 for washing, closing the valve b and the valve d, vacuumizing and drying the calcium carbonate filter tank 3 and the leaching slag filter tank 4, and discharging the materials.
The device can be used for preparing high-purity calcium carbonate, has low operation cost and environmental protection, and has remarkable advantages in the resource utilization of producing light calcium carbonate and carbide slag.
Claims (5)
1. A device for preparing high-purity calcium carbonate is characterized by comprising the following structures: a carbonization reaction tank (1), a water collecting tank (2), a calcium carbonate filter tank (3), a leaching residue filter tank (4), a first centrifugal pump (5), a second centrifugal pump (6), a water injection pump (7) and a carbon dioxide inlet end (8); the carbonization reaction tank (1), the calcium carbonate filter tank (3) and the first centrifugal pump (5) form a closed loop through pipelines; the water collecting tank (2), the second centrifugal pump (6) and the water spraying pump (7) form a closed loop; the calcium carbonate filter tank (3) and the leaching residue filter tank (4) are identical in structure, are both positioned right above the carbonization reaction tank (1), are respectively connected with the liquid outlets of the first centrifugal pump (5) at the upper part, are respectively connected with a branch of the liquid outlet of the second centrifugal pump (6) at the upper part, are respectively connected with the gas inlet end of the water jet pump (7) at the side surface, and are respectively connected with the carbonization reaction tank (1) at the bottom; the liquid inlet end of the water jet pump (7) is connected with the other branch of the outlet end of the second centrifugal pump (6), and the outlet end of the gas-liquid mixture is connected with the water collecting tank (2) right below; the carbon dioxide inlet end (8) is connected to the upper part of the carbonization reaction tank; a valve (a) is arranged on a pipeline between the first centrifugal pump (5) and the calcium carbonate filter tank (3), and a valve (c) is arranged on a pipeline between the first centrifugal pump (5) and the leaching residue filter tank (4); a valve (b) is arranged on a pipeline between the second centrifugal pump (6) and the calcium carbonate filter tank (3), a valve (d) is arranged on a pipeline between the second centrifugal pump (6) and the leaching residue filter tank (4), and a valve (g) is arranged on a pipeline between the second centrifugal pump (6) and the water jet pump (7); a valve (e) is arranged on a pipeline between the water injection pump (7) and the calcium carbonate filter tank (3), and a valve (f) is arranged on a pipeline between the water injection pump (7) and the leaching residue filter tank (4).
2. The apparatus for preparing high-purity calcium carbonate according to claim 1, wherein: the calcium carbonate filter tank (3) and the leaching residue filter tank (4) both comprise the following structures: a filter cake cylinder (A1), a filtrate cylinder (A2), a vacuumizing gas outlet end (A), a washing water inlet end (B), a leached solid-liquid inlet end (C), a filtrate outlet end (D), a dried filter cake outlet end (E), a filter plate (F) and a stirring device (G); the filter cake cylinder (A1) is arranged right above the filtrate cylinder (A2) and is separated by a filter plate (F); the filter cake filtering device is characterized in that the outlet end (A) is positioned at the upper part of the side face of the filtrate cylinder (A2), the washing water inlet end (B) and the leaching solid-liquid inlet end (C) are positioned at the top of the filter cake cylinder (A1), the filtrate outlet end (D) is positioned at the bottom of the filtrate cylinder (A2), the outlet end (E) is positioned at the lower part of the side face of the filter cake cylinder (A1), and the stirring device (G) is positioned in the middle of the filter cake cylinder (A1).
3. The apparatus for preparing high-purity calcium carbonate according to claim 2, wherein: the calcium carbonate filter tank (3) and the leaching residue filter tank (4) also comprise a water bath heating structure (H1) at the position of the filter cake cylinder (A1) and are positioned at the periphery of the cylinder body.
4. The apparatus for preparing high-purity calcium carbonate according to claim 2, wherein: the calcium carbonate filter tank (3) and the leaching residue filter tank (4) also comprise a water bath heating structure (H2) at the position of the filtrate cylinder (A2) and are positioned at the periphery of the cylinder body.
5. The apparatus for preparing high-purity calcium carbonate according to claim 1, wherein: a water bath temperature control jacket is arranged at the periphery of the water collecting tank (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921332048.7U CN210559432U (en) | 2019-08-15 | 2019-08-15 | Device for preparing high-purity calcium carbonate |
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| CN201921332048.7U CN210559432U (en) | 2019-08-15 | 2019-08-15 | Device for preparing high-purity calcium carbonate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110342558A (en) * | 2019-08-15 | 2019-10-18 | 张旭 | Prepare the device and technique of high-purity calcium carbonate |
| CN110615458A (en) * | 2019-10-08 | 2019-12-27 | 张旭 | Device and process for preparing high-purity calcium carbonate |
-
2019
- 2019-08-15 CN CN201921332048.7U patent/CN210559432U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110342558A (en) * | 2019-08-15 | 2019-10-18 | 张旭 | Prepare the device and technique of high-purity calcium carbonate |
| CN110615458A (en) * | 2019-10-08 | 2019-12-27 | 张旭 | Device and process for preparing high-purity calcium carbonate |
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