CN221071050U - System for utilize calcium magnesium concentrate preparation magnesium carbonate, sodium nitrate, gypsum - Google Patents
System for utilize calcium magnesium concentrate preparation magnesium carbonate, sodium nitrate, gypsum Download PDFInfo
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- CN221071050U CN221071050U CN202322666329.9U CN202322666329U CN221071050U CN 221071050 U CN221071050 U CN 221071050U CN 202322666329 U CN202322666329 U CN 202322666329U CN 221071050 U CN221071050 U CN 221071050U
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- China
- Prior art keywords
- filter
- kettle
- magnesium
- sedimentation
- decalcification
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- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 239000004317 sodium nitrate Substances 0.000 title claims abstract description 31
- 235000010344 sodium nitrate Nutrition 0.000 title claims abstract description 31
- ZFXVRMSLJDYJCH-UHFFFAOYSA-N calcium magnesium Chemical compound [Mg].[Ca] ZFXVRMSLJDYJCH-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 239000010440 gypsum Substances 0.000 title claims abstract description 24
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 24
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 title claims abstract description 24
- 239000001095 magnesium carbonate Substances 0.000 title claims abstract description 24
- 229910000021 magnesium carbonate Inorganic materials 0.000 title claims abstract description 24
- 239000012141 concentrate Substances 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title description 3
- 238000004062 sedimentation Methods 0.000 claims abstract description 33
- 239000000706 filtrate Substances 0.000 claims abstract description 27
- 238000001914 filtration Methods 0.000 claims abstract description 24
- 238000002425 crystallisation Methods 0.000 claims abstract description 23
- 230000008025 crystallization Effects 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 22
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 10
- 239000010446 mirabilite Substances 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 238000004090 dissolution Methods 0.000 claims description 26
- 239000012065 filter cake Substances 0.000 claims description 16
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 11
- 238000001556 precipitation Methods 0.000 claims 1
- 238000010129 solution processing Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 8
- 229910000029 sodium carbonate Inorganic materials 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 4
- 239000011575 calcium Substances 0.000 description 4
- 239000013049 sediment Substances 0.000 description 4
- 239000006227 byproduct Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012452 mother liquor Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical class [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000002367 phosphate rock Substances 0.000 description 2
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The utility model relates to the technical field of calcium-magnesium concentrated solution processing systems, in particular to a system for preparing magnesium carbonate, sodium nitrate and gypsum by using calcium-magnesium concentrated solution. The utility model discloses a system for preparing magnesium carbonate, sodium nitrate and gypsum by utilizing calcium-magnesium concentrate, which comprises a decalcification kettle, a first filter, a sedimentation kettle, a second filter and a concentration crystallization kettle which are connected through pipelines; the decalcification kettle is used for receiving calcium-magnesium concentrated solution and mirabilite solution; the first filter is used for filtering decalcified feed liquid after decalcification reaction; the sedimentation kettle is used for receiving the first filtrate filtered by the first filter and carrying out sedimentation treatment on the first filtrate; the second filter is used for filtering the sedimentation liquid after sedimentation treatment; the system disclosed by the utility model can comprehensively utilize the calcium-magnesium concentrated solution and efficiently produce magnesium carbonate, sodium nitrate and gypsum.
Description
Technical Field
The utility model relates to the technical field of calcium-magnesium concentrated solution processing systems, in particular to a system for preparing magnesium carbonate, sodium nitrate and gypsum by using calcium-magnesium concentrated solution.
Background
In phosphorite and chemical fertilizer processing enterprises, chemical mineral processing byproducts such as calcium and magnesium concentrated solution contain calcium and magnesium ion compounds which are indispensable elements for agriculture and forestry fruit trees, and are beneficial to the growth of agriculture and forestry fruit trees.
At present, the preparation of calcium and magnesium ion compounds from calcium and magnesium concentrate of chemical beneficiation byproducts is also an important research, development and production object of various phosphorite and fertilizer processing enterprises. However, the calcium-magnesium ion compound prepared from the calcium-magnesium concentrate by the existing method has the defects of low utilization value, very limited application range, high actual production difficulty, high production cost, low filtrate conversion rate, unstable product content and fewer recovered byproducts of the calcium-magnesium concentrate, and is not favorable for comprehensive development and utilization of the calcium-magnesium concentrate.
For this purpose, it is necessary to provide a system for preparing magnesium carbonate, sodium nitrate and gypsum from calcium-magnesium concentrate.
Disclosure of utility model
In order to overcome the defects of the prior art, the system for preparing magnesium carbonate, sodium nitrate and gypsum by using the calcium-magnesium concentrated solution provided by the utility model can comprehensively utilize the calcium-magnesium concentrated solution and efficiently produce the magnesium carbonate, the sodium nitrate and the gypsum.
The technical scheme adopted for solving the technical problems is as follows:
A system for preparing magnesium carbonate, sodium nitrate and gypsum by using calcium-magnesium concentrate comprises a decalcification kettle, a first filter, a sedimentation kettle, a second filter and a concentration crystallization kettle which are connected through pipelines;
The decalcification kettle is used for receiving calcium-magnesium concentrated solution and mirabilite solution;
The first filter is used for filtering decalcified feed liquid after decalcification reaction;
The sedimentation kettle is used for receiving the first filtrate obtained by filtering the first filter and carrying out sedimentation treatment on the first filtrate;
The second filter is used for filtering the sedimentation liquid after sedimentation treatment;
The concentration crystallization kettle is used for receiving second filtrate obtained by filtering the second filter and concentrating and crystallizing the second filtrate.
Further, the decalcification tank is connected to the first dissolution tank.
Still further, the first dissolution tank is used for dissolving and providing a mirabilite solution.
Still further, the first filter is connected to a first dissolution tank.
Further, the settling tank is connected to a second dissolution tank.
Still further, the second dissolution tank is used for dissolving and providing sodium carbonate solution.
Still further, the second filter is connected to a second dissolution tank.
Further, the concentrated crystallization kettle is connected to a decalcification kettle.
Further, the first filter is connected to the first dissolution tank.
Further, the first filter produces a first filtrate and a gypsum cake; the second filter produces a second filtrate and a magnesium carbonate filter cake; and the concentration crystallization kettle produces sodium nitrate sediment.
Further, the concentrating crystallization kettle is connected to a third filter; the third filter is used for filtering sodium nitrate sediment to obtain a sodium nitrate filter cake.
Still further, the system also includes a dryer for drying the gypsum cake, the magnesium carbonate cake, the sodium nitrate cake.
The beneficial effects of the utility model are as follows:
1. The system of the application realizes the full utilization of calcium-magnesium concentrate, can efficiently produce gypsum, magnesium carbonate and sodium nitrate, and avoids the waste of resources.
2. According to the system disclosed by the application, continuous production can be realized and the production efficiency is improved by reasonably arranging the decalcification kettle, the first filter, the sedimentation kettle, the second filter, the concentration crystallization kettle, the first dissolving tank, the second dissolving tank and the dryer.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is a schematic diagram of a system for preparing magnesium carbonate, sodium nitrate and gypsum from calcium magnesium concentrate according to the present application;
FIG. 2 is another schematic diagram of a system for preparing magnesium carbonate, sodium nitrate, and gypsum using a calcium magnesium concentrate according to the present application;
FIG. 3 is a schematic flow diagram of the product of the system for preparing magnesium carbonate, sodium nitrate and gypsum from calcium magnesium concentrate according to the present application;
in the figure: 1. a decalcification kettle; 2. a first filter; 3. a sedimentation kettle; 4. a second filter; 5. concentrating and crystallizing the kettle; 6. a first dissolution tank; 7. a second dissolution tank; 8. a dryer.
Detailed Description
The utility model will be further illustrated by the following examples, which are not intended to limit the scope of the utility model, in order to facilitate the understanding of those skilled in the art.
As used herein, "and/or" includes any and all combinations of one or more of the associated listed items. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
The system for preparing magnesium carbonate, sodium nitrate and gypsum by using calcium-magnesium concentrated solution as shown in fig. 1-3 comprises a decalcification kettle 1, a first filter 2, a sedimentation kettle 3, a second filter 4 and a concentration crystallization kettle 5 which are connected through pipelines;
The decalcification kettle 1 is used for receiving calcium-magnesium concentrated solution and mirabilite solution;
The first filter 2 is used for filtering decalcified feed liquid after decalcification reaction;
the sedimentation kettle 3 is used for receiving the first filtrate obtained by filtering the first filter 2 and carrying out sedimentation treatment on the first filtrate;
The second filter 4 is used for filtering the sedimentation liquid after sedimentation treatment;
the concentrating and crystallizing kettle 5 is used for receiving the second filtrate obtained by filtering the second filter 4 and concentrating and crystallizing the second filtrate.
In one embodiment, a feed inlet of the decalcification kettle receives calcium-magnesium concentrate and lime; the discharge port of the decalcification kettle is connected to the feed port of the first filter; the liquid outlet of the first filter is connected to the feed inlet of the sedimentation kettle; the discharge port of the sedimentation kettle is connected to the feed port of the second filter; the liquid outlet of the second filter is connected to the feed inlet of the concentrating crystallization kettle; the discharge outlet (liquid outlet) of the concentration crystallization kettle is connected to the feed inlet of the decalcification kettle.
In one embodiment, the decalcification tank 1 is connected to a first dissolution tank 6. The first dissolution tank 6 is used for dissolving and providing a mirabilite solution. The first filter 2 is connected to a first dissolution tank 6. Specifically, the liquid outlet of first filter is connected to the feed inlet of first dissolving tank, and the discharge gate of first dissolving tank is connected to the feed inlet of decalcification cauldron.
In one embodiment, the sedimentation tank 3 is connected to a second dissolution tank 7. The second dissolution tank 7 is used for dissolving and providing sodium carbonate solution. The second filter 4 is connected to a second dissolution tank 7.
In one embodiment, the first filter 2 produces a first filtrate and a gypsum cake; the second filter 4 produces a second filtrate and a magnesium carbonate filter cake; the concentration crystallization kettle 5 produces sodium nitrate sediment.
In one embodiment, the concentrating crystallization kettle 5 is connected to a third filter; the third filter is used for filtering sodium nitrate sediment to obtain a sodium nitrate filter cake.
In one embodiment, as shown in fig. 2, the system further comprises a dryer 8, said dryer 8 being used for drying the gypsum cake, the magnesium carbonate cake, the sodium nitrate cake.
Specifically, the production process of the gypsum filter cake, the magnesium carbonate filter cake and the sodium nitrate filter cake is as follows:
1. Production process of sodium nitrate filter cake
The calcium-magnesium concentrated solution and the mirabilite solution enter a decalcification kettle to carry out decalcification reaction, and decalcification feed liquid is obtained after the decalcification reaction is finished;
Filtering the decalcified feed liquid through a first filter, and allowing the first filtrate obtained after filtering to enter a sedimentation kettle for sedimentation treatment;
introducing the first filtrate and the sodium carbonate solution into a sedimentation kettle for sedimentation treatment, and obtaining sedimentation feed liquid after the sedimentation treatment is finished;
Filtering the settled feed liquid through a second filter, and allowing the filtered second filtrate to enter a concentration crystallization kettle;
Introducing the second filtrate into a concentrating crystallization kettle; heating and concentrating, evaporating part of water, and precipitating sodium nitrate; performing crystallization; as shown in fig. 1, a discharge port of the concentration crystallization kettle is connected to a feed port of the decalcification kettle, and crystallization mother liquor is introduced into the decalcification kettle;
Or as shown in fig. 2 or 3, filtering the crystallized feed liquid by using a third filter 9 to obtain a sodium nitrate filter cake and sodium nitrate mother liquor (third filter); the liquid outlet of the third filter is connected to the feed inlet of the decalcification kettle, and sodium nitrate mother liquor is led into the decalcification kettle.
2. Production process of magnesium carbonate filter cake
Filtering the settled feed liquid through a second filter, and obtaining a second filtrate and a second filter cake after filtering; washing the second filter cake with washing water to obtain a magnesium carbonate filter cake and a washing liquid;
The washing liquid is led into a second dissolving tank for dissolving the sodium carbonate to form sodium carbonate solution.
3. Gypsum production process
Filtering the decalcified feed liquid through a first filter, and obtaining a first filtrate and a first filter cake after filtering; washing the first filter cake with wash water to obtain gypsum and a wash solution;
the wash solution is introduced into a first dissolution tank for dissolving the mirabilite to form a mirabilite solution.
The decalcification kettle, the first filter, the sedimentation kettle, the second filter, the concentration crystallization kettle, the first dissolution tank, the second dissolution tank and the dryer are not specially designated, and the inventor can reasonably purchase or use according to the existing equipment to meet the corresponding requirements; for example, the first filter may be a centrifuge, a plate and frame filter; the decalcification kettle, the concentration crystallization kettle and the first dissolution tank can be a reaction kettle and a reaction tank; the dryer may be an oven.
The above embodiments are preferred embodiments of the present utility model, and besides, the present utility model may be implemented in other ways, and any obvious substitution is within the scope of the present utility model without departing from the concept of the present utility model.
Claims (10)
1. A system for preparing magnesium carbonate, sodium nitrate and gypsum by using calcium-magnesium concentrate is characterized by comprising a decalcification kettle (1), a first filter (2), a sedimentation kettle (3), a second filter (4) and a concentration crystallization kettle (5) which are connected through pipelines;
The decalcification kettle (1) is used for receiving calcium-magnesium concentrated solution and mirabilite solution;
the first filter (2) is used for filtering decalcified feed liquid after decalcification reaction;
The sedimentation kettle (3) is used for receiving the first filtrate obtained by filtering the first filter (2) and carrying out sedimentation treatment on the first filtrate;
the second filter (4) is used for filtering the sedimentation liquid after sedimentation treatment;
The concentrating crystallization kettle (5) is used for receiving the second filtrate obtained by filtering the second filter (4) and concentrating and crystallizing the second filtrate.
2. The system according to claim 1, characterized in that the decalcification tank (1) is connected to a first dissolution tank (6).
3. A system according to claim 2, characterized in that the first dissolution tank (6) is used for dissolving and providing a mirabilite solution.
4. System according to claim 1, characterized in that the sedimentation tank (3) is connected to a second dissolution tank (7).
5. The system according to claim 4, characterized in that the second dissolution tank (7) is used for dissolving and providing soda solution.
6. The system according to claim 1, characterized in that the second filter (4) is connected to a second dissolution tank (7).
7. The system according to claim 1, characterized in that the concentrating crystallization kettle (5) is connected to a decalcification kettle (1).
8. The system according to claim 2, characterized in that the first filter (2) is connected to a first dissolution tank (6).
9. The system according to claim 4, characterized in that the second filter (4) is connected to a second dissolution tank (7).
10. The system of claim 1, wherein the system further comprises a controller configured to control the controller,
The first filter (2) produces a first filtrate and a gypsum cake;
The second filter (4) produces a second filtrate and a magnesium carbonate filter cake;
And the concentration crystallization kettle (5) is used for producing sodium nitrate precipitation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322666329.9U CN221071050U (en) | 2023-09-28 | 2023-09-28 | System for utilize calcium magnesium concentrate preparation magnesium carbonate, sodium nitrate, gypsum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322666329.9U CN221071050U (en) | 2023-09-28 | 2023-09-28 | System for utilize calcium magnesium concentrate preparation magnesium carbonate, sodium nitrate, gypsum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221071050U true CN221071050U (en) | 2024-06-04 |
Family
ID=91256009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322666329.9U Active CN221071050U (en) | 2023-09-28 | 2023-09-28 | System for utilize calcium magnesium concentrate preparation magnesium carbonate, sodium nitrate, gypsum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221071050U (en) |
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2023
- 2023-09-28 CN CN202322666329.9U patent/CN221071050U/en active Active
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