CN118005044A - Salt pan ore drying system for tedding brine - Google Patents
Salt pan ore drying system for tedding brine Download PDFInfo
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- CN118005044A CN118005044A CN202410157604.0A CN202410157604A CN118005044A CN 118005044 A CN118005044 A CN 118005044A CN 202410157604 A CN202410157604 A CN 202410157604A CN 118005044 A CN118005044 A CN 118005044A
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- brine
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- salt pond
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- 239000012267 brine Substances 0.000 title claims abstract description 304
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 title claims abstract description 304
- 150000003839 salts Chemical class 0.000 title claims abstract description 195
- 238000001035 drying Methods 0.000 title claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 37
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 11
- 239000011707 mineral Substances 0.000 claims description 11
- 238000001363 water suppression through gradient tailored excitation Methods 0.000 claims description 11
- 238000005086 pumping Methods 0.000 claims description 7
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract description 36
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 abstract description 21
- 239000011780 sodium chloride Substances 0.000 abstract description 18
- 239000001103 potassium chloride Substances 0.000 abstract description 10
- 235000011164 potassium chloride Nutrition 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 8
- 238000002156 mixing Methods 0.000 abstract description 8
- 159000000000 sodium salts Chemical class 0.000 abstract description 7
- 238000009825 accumulation Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 11
- 235000010755 mineral Nutrition 0.000 description 9
- 241001131796 Botaurus stellaris Species 0.000 description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 7
- 238000001704 evaporation Methods 0.000 description 7
- 239000003337 fertilizer Substances 0.000 description 7
- PALNZFJYSCMLBK-UHFFFAOYSA-K magnesium;potassium;trichloride;hexahydrate Chemical compound O.O.O.O.O.O.[Mg+2].[Cl-].[Cl-].[Cl-].[K+] PALNZFJYSCMLBK-UHFFFAOYSA-K 0.000 description 7
- 229940072033 potash Drugs 0.000 description 7
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 7
- 235000015320 potassium carbonate Nutrition 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 6
- 229910052736 halogen Inorganic materials 0.000 description 6
- 150000002367 halogens Chemical class 0.000 description 6
- 238000003860 storage Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 239000011591 potassium Substances 0.000 description 3
- 229910052700 potassium Inorganic materials 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 229910002059 quaternary alloy Inorganic materials 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 238000012876 topography Methods 0.000 description 2
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention relates to a salt pan for tedding brine, which comprises a plurality of salt ponds (1), a brine inlet ditch (2) and a brine outlet ditch (3), wherein the brine inlet ditch (2) is arranged at one side of a salt pond group (10) and is used for feeding brine, is communicated with each salt pond (1) in the salt pond group (10), and is juxtaposed with a brine inlet gate (22), and the brine inlet ditch (2) is also provided with brine guide gates (23) corresponding to each salt pond (1) at intervals; the brine outlet groove (3) is arranged on the other side of the salt pond (1), is communicated with each salt pond (1) in the salt pond group (10), and is provided with a brine outlet gate (32) for controlling the on-off of brine. Therefore, by utilizing the structures of the brine inlet ditch (2), the brine outlet ditch (3), the brine inlet gate (22), the brine guide gate (23), the brine outlet gate (32) and the like which are arranged corresponding to the salt pond (1), brine can be injected into the independent salt pond for tedding under special conditions, the brine mixing effect is avoided, the potassium chloride yield is improved, and excessive sodium chloride accumulation is prevented, and the sodium salt pond space is occupied.
Description
Technical Field
The invention relates to a salt pan potash fertilizer production technology, in particular to a structure of a salt pan mineral drying system for tedding brine.
Background
The main process of the potash fertilizer production is as follows: the method comprises the steps of exploiting inter-crystalline brine (commonly known as raw brine) in salt lake stratum, conveying the salt lake stratum to an artificially constructed large-area salt pond (commonly known as salt pan), naturally evaporating and tedding by solar energy, firstly, sunning out part of sodium chloride to obtain ore-forming brine (commonly known as E brine), tedding the ore-forming brine to obtain carnallite (KCl. MgCl 2·6H2 O) ore, extracting potassium chloride (KCl) in the carnallite ore by chemical processes such as crystallization, floatation and the like, and finally, preparing the potash fertilizer.
The tedding of the salt pan is an important link for producing the potash fertilizer, and the structure of the salt pan adopted at present is to integrate a plurality of salt ponds according to the topography, and the brine evaporates water in the process of flowing through each salt pond (commonly called as water passing) until the potassium chloride serving as the potash fertilizer raw material is separated out from the salt pond at the tail end. In order to improve beach sun-drying efficiency, for example, a salt pan tedding carnallite system disclosed in the invention patent number 202010884666.3 sets a halogen inlet and a halogen outlet of adjacent carnallite pools (salt pools) to be distributed in a diagonal manner, so that ore-forming brine is in diagonal water running in the water running process. The structure of the salt pan is beneficial to improving the evaporation capacity of water by flowing the ore-forming brine and realizing balanced ore sunning.
However, the structure of such a salt pan suffers from problems, especially in the following two cases:
1. When the content of potassium and magnesium in the extracted raw brine is too low, the brine mixing phenomenon caused by different brine concentrations in different salt ponds can change mineral components precipitated in a downstream salt pond, so that the yield of potassium chloride is seriously reduced, and the loss of potassium chloride is caused. In addition, when the content of potassium and magnesium in the raw brine is low and the content of sodium is high, a large amount of sodium chloride can be separated out from the brine in the tedding process, and the sodium chloride occupies the space of a salt pond, so that the brine storage capacity of a salt field is seriously reduced.
2. When the air temperature is low (less than or equal to 5 ℃), the evaporation amount of water is small, and the ore forming rate is low, so that the E brine can only be obtained by additionally increasing the number of salt ponds, prolonging the water travelling route and increasing the tedding time, and the space of a salt field and manpower and material resources are seriously wasted. And when the temperature is low, the problem that the sodium chloride occupies the brine storage capacity of the salt pan is more serious.
With the deep development of salt lake resources, the improvement of potash fertilizer productivity and the implementation of solid-liquid conversion, the situation often happens in the process of tedding salt fields. Because the structure of the existing salt pan needs to rely on newly entered brine to drive water supply in the tedding process, the water supply cannot be interrupted, and the tedding period of salt lake brine is long and difficult to quantitatively calculate, so that adjustment is difficult to make when the conditions are met.
Disclosure of Invention
The invention aims to solve the problems that the prior salt pan is difficult to adjust when the grade of raw brine is poor, the temperature is low and the like, so that sodium chloride occupies a salt pond accommodating space, mineral components separated out by brine tedding are changed, and the space of the salt pan is wasted.
In order to achieve the above purposes, the invention provides a salt pan ore-airing system for airing brine, which comprises a plurality of salt ponds 1, wherein each salt pond 1 is communicated according to the height of a land, a water gate 4 is arranged between adjacent salt ponds 1 to control the on-off of the brine, and the salt pan ore-airing system further comprises a brine inlet ditch 2, a brine inlet pump station 21, a brine outlet ditch 3 and a brine outlet pump station 31.
The brine inlet ditch 2 is arranged on one side of each salt pond 1, is communicated with the inside of each salt pond 1, is provided with a brine inlet gate 22 at a communicating part 20 for controlling the on-off of brine, and the brine inlet ditch 2 is provided with a brine guide gate 23 at a position corresponding to each salt pond 1 for controlling the on-off of brine.
The brine inlet pump station 21 is arranged at the front end of the brine inlet ditch 2 and is used for pumping brine into the brine inlet ditch 2.
The brine outlet groove 3 is arranged on the other side of each salt pond 1, is communicated with each salt pond 1 in the salt pond group 10, and is provided with a brine outlet gate 32 at the communicating position for controlling brine on-off.
The brine outlet pump station 31 is arranged at the rear end of the brine outlet groove 3 and is used for pumping out brine in the brine outlet groove 3.
Therefore, when the raw brine is poor in grade, the air temperature is low, and the like, all the water running gates 4 are closed, and the beach sun is independently carried out by utilizing each salt pond 1. That is, brine is introduced into each salt pond 1 individually for beach-drying by controlling the brine guide gate 23 and the brine inlet gate 22 of each salt pond 1. The salt ponds 1 are not watered, so that the change of mineral which is separated out by tedding brine and is caused by brine mixing effect can be avoided, and the yield of potassium chloride can be improved.
After the brine component of the single salt pond 1 reaches a preset value, the sodium chloride at the bottom of the salt pond 1 can be cleaned, so that excessive sodium chloride accumulation is prevented, and the sodium salt pond space is occupied.
Because the brine can be controlled to enter different salt ponds 1 by utilizing the gates such as the brine inlet ditch 2, the brine inlet gate 22 and the like to be tedded to required components, the water travelling route is not required to be deliberately prolonged, the water storage capacity of the salt pond 1 can be more flexibly regulated according to production requirements, and the reasonable utilization and adjustment of the salt pan space are facilitated.
Preferably, the bittern inlet pump station 21 pumps raw bittern into the bittern inlet ditch 2, the salt pond 1 in the salt pond group 10 dries the raw bittern into ore-forming bittern, and the bittern outlet pump station 31 pumps the ore-forming bittern out.
Because the salt lake brine of the K +、Na+、Mg2+、Cl-/H2 O quaternary system which is naturally formed as the raw brine can fall in a sodium chloride crystal phase region and is far away from the E point, when the air temperature is low, the sodium salt pond is more serious in the problem that the sodium chloride occupies the space of the salt pond and the brine mixing effect causes the change of the mineral which is spread and separated out by brine.
Preferably, the brine inlet channel 2 and the brine outlet channel 3 are formed with downward slopes like the respective salt pools 1, i.e., brine can flow backward by gravity after entering the brine inlet channel 2 and the brine outlet channel 3.
Preferably, the salt tanks 1 are arranged in two rows to form two salt tank groups 10 respectively, and the two salt tank groups 10 are arranged in parallel and share the brine inlet channel 2, the brine inlet pump station 21 or the brine outlet channel 3 and the brine outlet pump station 31. Under the conditions that the air temperature is more than 5 ℃ and the brine quality is good, the brine is tedded in a continuous water running mode in any one of the left and right salt pond groups 10. At the same time, salt forming in another salt pond 10 can be cleaned or collected.
Preferably, two water running gates 4 are arranged between the adjacent salt ponds 1, and the two water running gates 4 are respectively close to the left side and the right side of the salt pond 1. Under the condition that the air temperature is more than 5 ℃ and the quality of the brine is good, the water running gate 4 on one side is opened, so that the brine fills each salt pond 1, and the brine is driven by the newly pumped brine to run along the diagonal line of each salt pond 1 continuously. The staff utilizes each water gate 4 to adjust the water velocity, controls the components of the salt pond 1 at the rearmost end to reach a preset value, and then discharges the components through the brine discharge pump station 31.
Drawings
Fig. 1 is a structural explanatory diagram of a salt pan ore-drying system for tedding brine;
FIG. 2 is an enlarged explanatory view of a salt pond and peripheral structures in a salt pan ore-drying system;
FIG. 3 is an illustration of a salt pan tanning system for running water tedding;
FIG. 4 is an explanatory view of brine introduced into each salt pond when the salt ponds are sunned individually;
fig. 5 is a structural explanatory diagram of a brine pan drying system for drying brine as a modification.
Reference numerals: 1-a salt pond; 10-salt pond groups; l-center line L; 2-entering a halogen groove; 4-a water gate; 21-a brine inlet pump station; 22-a halogen inlet gate; 23, a halogen-guiding gate; 3-discharging a halogen ditch; 31-a brine outlet pump station; 32-a halogen outlet gate.
Detailed Description
Embodiments of the invention are described in detail below with reference to the attached drawing figures, and the following description is illustrative of the invention as claimed.
Example 1
Fig. 1 is a structural explanatory view of a salt pan ore-drying system for tedding brine, and fig. 2 is an enlarged explanatory view of a salt pond and peripheral structures in the salt pan ore-drying system; the structure of a brine pan drying system for drying brine is described below with reference to fig. 1 and 2.
As shown in fig. 1, a salt pan ore-drying system for tedding brine comprises a plurality of salt ponds 1, a brine inlet ditch 2, a brine inlet pump station 21, a brine outlet ditch 3 and a brine outlet pump station 31,
The salt ponds 1 are sequentially communicated according to the height of the topography to form a salt pond group 10. Two water gate 4 are respectively arranged between adjacent salt ponds 1 at positions adjacent to the pond edges to control the on-off of brine.
The pool edges at two sides of each salt pool 1 are respectively provided with a brine inlet ditch 2 and a brine outlet ditch 3. The front end of the brine inlet ditch 2 is provided with a brine inlet pump station 21 for pumping brine into the brine inlet ditch 2, and the tail end of the brine inlet ditch 2 is in a closed state.
The front end of the brine outlet groove 3 is in a closed state, and the tail end of the brine outlet groove is provided with a brine outlet pump station 31 for pumping brine in the brine outlet groove 3.
As shown in the upper side of fig. 2, the brine inlet groove 2 is separated from each brine pond 1 in the brine pond group 10 by a first pond wall 20, a brine inlet through groove 24 is arranged on the first pond wall 20 so that the brine inlet groove 2 is communicated with the interior of the brine pond 1, and a brine inlet gate 22 is arranged on the brine inlet through groove 24 for controlling brine on-off. That is, when the brine inlet gate 22 is opened, the brine inlet through groove 24 is opened, the brine inlet groove 2 communicates with the inside of the salt pond 1, and brine can be put into the salt pond 1 through the brine inlet groove 2; when the brine inlet gate 22 is closed, the brine inlet through groove 24 is closed, the brine inlet groove 2 is not communicated with the salt pond 1, and brine in the brine inlet groove 2 cannot enter the salt pond 1.
As shown in the upper side of fig. 2, the brine inlet channel 2 is provided with brine guide gates 23 at positions corresponding to each brine pond 1 in the brine pond group 10 to control the on-off of brine, and the brine can be controlled to be input into any brine pond 1 by matching with the brine inlet gate 22 corresponding to the brine pond 1. For example, referring to fig. 4, brine (hatched portion in the figure) can be allowed to enter only the second salt pond 1 by opening the brine guide gate 23a corresponding to the first salt pond 1 on the left side, closing the brine guide gate 23b corresponding to the second salt pond 1 on the left side, closing the brine inlet gate 22a on the pond wall of the first salt pond 1 on the left side, and opening the brine inlet gate 22b on the pond wall of the second salt pond 1 on the left side.
As shown in the lower side of fig. 2, the brine discharge groove 3 is separated from each salt pond 1 in the salt pond group 10 by a second pond wall 30, a brine discharge through groove 34 is arranged on the second pond wall 30 so that the brine discharge groove 2 is communicated with the interior of the salt pond 1, and a brine discharge gate 32 is arranged on the brine discharge through groove 34 to control brine on-off. That is, when the brine discharging gate 32 is opened, the brine discharging through groove 34 is opened, the brine discharging groove 3 is communicated with the inside of the salt pond 1, and brine in the salt pond 1 can be discharged through the brine discharging groove 3; when the brine outlet gate 32 is closed, the brine outlet through groove 34 is closed, the brine outlet groove 3 is not communicated with the salt pond 1, and brine in the salt pond 1 cannot enter the brine outlet groove 3.
The brine inlet ditch 2 and the brine outlet ditch 3 are respectively formed with downward slopes, and brine can flow in the ditches by gravity after entering the brine inlet ditch 2 and the brine outlet ditch 3. The brine inlet channel 2 and the brine outlet channel 3 are U-shaped or trapezoidal channels in cross section instead of pipelines, so that blockage caused by salt precipitation of brine can be avoided.
The brine inlet ditch 2, the brine tank 1 and the brine outlet ditch 3 have a gradient from high to low as seen from the side of the brine tank, namely, from the direction indicated by a small arrow b in fig. 2, so that brine can flow from the brine inlet ditch 2 to the brine tank 1 by gravity after the brine inlet gate 22 is opened; after the brine discharge gate 32 is opened, brine in the brine tank 1 can flow out from the brine discharge channel 3 by gravity.
As shown in fig. 2, two water gate 4 are arranged between adjacent salt ponds 1, the two water gate 4 is far away from the central line L of the salt pond group 10, that is, the two water gate 4 are respectively positioned adjacent to the left pond edge and the right pond edge, and one water gate needs to be opened alternately when water is fed. This process is similar to a salt pan tedding carnallite system disclosed in the patent 202010884666.3, and will not be described in detail herein.
Fig. 3 is an explanatory diagram of a salt pan tanning system for beach tanning, fig. 4 is an explanatory diagram of brine introduction into salt ponds when each salt pond is solely beach tanning, and two different forms of tedding processes are described below with reference to fig. 3 and 4:
1. under the conditions that the air temperature is more than 5 ℃ and the quality of brine is good, namely the brine evaporation speed is high, and under the condition that the effect of adding brine has little influence on the minerals which are separated out later, the brine is tedded in a continuous water-passing mode in a salt pan, namely:
As shown in fig. 3, all the brine inlet gates 22 are closed, and brine is pumped into the left first salt pond 1 by the brine inlet pump station 21. And opening the water gate 4 at one side of the water gate to enable brine to continuously flow along the diagonal line of each salt pond 1, and carrying out beach sunning on the brine. In the water running process, staff can utilize each water running gate 4 to adjust the water running speed, control the brine concentration in each salt pond, until the brine component in the salt pond 1 at the rearmost end reaches a preset value, and then pass through the brine outlet pump station 31 and are discharged from the brine outlet ditch 3.
The continuous water-feeding tedding mode is simple and convenient to control, reduces manpower as much as possible under the condition of rapid evaporation of brine, and achieves the maximization of productivity.
2. Under the conditions that the brine evaporation speed is high and the brine mixing effect can cause great reduction of potassium chloride precipitation in the subsequent tedding process, all the water passing gates 4 are closed, and each salt pond 1 is utilized to independently carry out beach-drying. That is, brine is introduced into each salt pond 1 individually for beach-drying by controlling the brine guide gate 23 and the brine inlet gate 22 of each salt pond 1. No water is left between the salt ponds 1.
For example, as shown in fig. 4, taking the second salt pond 1 on the left side as an example, the first salt pond 23a on the left side is opened and the second salt pond 23b on the left side is closed, the salt inlet gate 22b corresponding to the second salt pond 1 on the left side is opened and the other salt inlet gates 22 are closed, all the water travelling gates 4 and the salt outlet gates 32 are closed, the salt water is pumped into the salt inlet channel 2 by the salt inlet pump station 21, the salt water enters the second salt pond 1 on the left side through the first salt pond 23a on the left side and the salt inlet gate 22b corresponding to the second salt pond 1 on the left side, and when the salt water in the second salt pond 1 on the left side reaches the upper limit level, the salt inlet gate 22b corresponding to the second salt pond 1 on the left side is closed. And other salt ponds are all similarly led into brine for beach sunning.
The separate tedding forms of each salt pond 1 can not produce a brine mixing effect due to the difference of brine concentration and substances, can avoid the change of mineral components separated out in the process of entering the subsequent salt pond for tedding when the brine is fed in series, and is beneficial to improving the yield of potassium chloride.
When the brine components in the salt ponds 1 are tedded to reach a preset value, the brine outlet gate 32 corresponding to each salt pond 1 is opened, and the brine is discharged from the brine outlet groove 3. Then, the sodium chloride at the bottom of the salt pond 1 can be cleaned, so that excessive accumulation of sodium chloride is prevented, and the sodium salt pond space is occupied.
Because the brine can be controlled to enter different salt ponds 1 by utilizing the gates such as the brine inlet ditch 2, the brine inlet gate 22 and the like to be tedded to required components, the water travelling route is not required to be deliberately prolonged, the water storage capacity of the salt pond 1 can be more flexibly regulated according to production requirements, and the reasonable utilization and adjustment of the salt pan space are facilitated.
Because the temperature is high when the salt pond is sunned alone, the water evaporation is fast, also can select part of salt pond 1 to carry out the beach sunning, and other salt ponds are then used for the clearance sodium chloride of deposit in the period. Therefore, different salt ponds 1 are used for shoal and sun drying in an interactive mode, brine shoal and deposited sodium chloride cleaning can be carried out simultaneously, and efficiency maximization is achieved.
Modification 1
Fig. 5 is a structural explanatory diagram of a brine pan for tedding brine in modification 1, and modification 1 is basically the same as example 1 in structure, except that:
as shown in fig. 5, the salt tanks 1 are arranged in two rows to form two salt tank groups 10, and the two salt tank groups 10 are arranged in parallel and share the brine inlet ditch 2 and the brine inlet pump station 21.
Under the conditions that the air temperature is more than 5 ℃ and the brine quality is good, the brine is tedded in a continuous water running mode in any one of the left and right salt pond groups 10. At the same time, salt forming in another salt pond 10 can be cleaned or collected.
Under the condition that the air temperature is less than or equal to 5 ℃ and/or the quality of brine is poor, the water storage mode of a single pond is used for tedding, namely, the brine is conveyed into any salt pond 1 by utilizing a public brine inlet pump station 21 and a brine inlet ditch 2, and when the brine component reaches a preset value, the brine is discharged by utilizing a brine outlet ditch 3 and a brine outlet pump station 31 adjacent to the salt pond 1.
According to the salt pan structure provided by the invention, by utilizing the structures of the brine inlet ditch 2, the brine outlet ditch 3, the brine inlet gate 22, the brine guide gate 23, the brine outlet gate 32 and the like which are arranged corresponding to the salt pond 1, brine can be injected into any one of the independent salt ponds for tedding when the raw brine grade is poor, the air temperature is low and the like, so that the change of minerals separated out by tedding the brine caused by the brine mixing effect is avoided, and the potassium chloride yield is improved.
After the brine component of the single salt pond 1 reaches a preset value, the sodium chloride at the bottom of the salt pond 1 can be cleaned, so that excessive sodium chloride accumulation is prevented, and the sodium salt pond space is occupied.
Because the brine can be controlled to enter different salt ponds 1 by utilizing the gates such as the brine inlet ditch 2, the brine inlet gate 22 and the like to be tedded to required components, the water travelling route is not required to be deliberately prolonged, the water storage capacity of the salt pond 1 can be more flexibly regulated according to production requirements, and the reasonable utilization and adjustment of the salt pan space are facilitated.
In addition, the naturally formed K +、Na+、Mg2、Cl-/H2O quaternary system salt lake brine as raw brine can fall in a sodium chloride crystal phase region and is far away from the E point, so that when the air temperature is low, the sodium salt pond is more serious in the problem that the sodium chloride occupies the salt pond space and the brine mixing effect causes the change of minerals which are tedly separated out from the brine. Therefore, the salt pan structure of the invention is preferably used for a sodium salt pond of K +、Na+、Mg2+、Cl-/H2O quaternary system salt lake brine at present, namely, a brine inlet pump station 21 is used for pumping raw brine, the raw brine is sun-cured into ore forming brine (E brine) by the salt pond 1 in the salt pond group 10, and the ore forming brine is pumped out to an adjusting pond or a carnallite pond by a brine outlet pump station 31.
In addition, from the development condition of salt lake brine in recent years, along with the deep exploitation, the improvement of potash fertilizer productivity and the implementation of solid-liquid conversion, the raw brine tedded in a salt field gradually becomes worse (the content of potassium and magnesium is reduced, and the content of sodium is continuously increased), and the carnallite pool has good application prospect.
Claims (5)
1. The salt pan ore drying system for tedding brine comprises a plurality of salt ponds (1), wherein each salt pond (1) is communicated according to the height of a terrain, a water gate (4) is arranged between adjacent salt ponds (1) to control the on-off of the brine, and is characterized in that,
Also comprises a brine inlet ditch (2), a brine inlet pump station (21), a brine outlet ditch (3) and a brine outlet pump station (31),
The brine inlet grooves (2) are arranged on one side of each salt pond (1), are communicated with the inside of each salt pond (1), are provided with brine inlet gates (22) at communication positions (20) for controlling brine on-off, the brine inlet grooves (2) are provided with brine guide gates (23) at positions corresponding to each salt pond (1) for controlling brine on-off,
The brine inlet pump station (21) is arranged at the front end of the brine inlet ditch (2) and is used for pumping brine into the brine inlet ditch (2),
The brine outlet groove (3) is arranged at the other side of each salt pond (1), is communicated with each salt pond (1) in the salt pond group (10), is provided with a brine outlet gate (32) at the communicating position for controlling the on-off of brine,
The brine outlet pump station (31) is arranged at the rear end of the brine outlet groove (3) and is used for pumping out brine in the brine outlet groove (3).
2. A salt pan drying system for drying brine according to claim 1, wherein the brine inlet pump station (21) pumps raw brine into the brine inlet ditch (2), the salt ponds (1) in the salt pond group (10) sun the raw brine into mineral brine, and the brine outlet pump station (31) pumps out the mineral brine.
3. A salt pan drying system for drying brine according to claim 1, wherein the brine inlet channel (2) and the brine outlet channel (3) are formed with a downward slope as in the respective salt ponds (1).
4. The brine pan drying system for drying brine according to claim 1, wherein the salt tanks (1) are arranged in two rows to form two salt tank groups (10) respectively,
The two salt pond groups (10) are arranged in parallel, and share the brine inlet ditch (2), the brine inlet pump station (21) or the brine outlet ditch (3) and the brine outlet pump station (31).
5. A salt pan drying system for drying brine according to any one of claims 1-4, wherein two water travelling gates (4) are arranged between adjacent salt ponds (1), the two water travelling gates (4) being respectively close to the left and right sides of the salt pond (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410157604.0A CN118005044A (en) | 2024-02-04 | 2024-02-04 | Salt pan ore drying system for tedding brine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410157604.0A CN118005044A (en) | 2024-02-04 | 2024-02-04 | Salt pan ore drying system for tedding brine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118005044A true CN118005044A (en) | 2024-05-10 |
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ID=90957861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410157604.0A Pending CN118005044A (en) | 2024-02-04 | 2024-02-04 | Salt pan ore drying system for tedding brine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118005044A (en) |
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2024
- 2024-02-04 CN CN202410157604.0A patent/CN118005044A/en active Pending
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