CN1613826A - Method for preparing carnallite from magnesium sulfate subtype potassium-containing brine - Google Patents
Method for preparing carnallite from magnesium sulfate subtype potassium-containing brine Download PDFInfo
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- CN1613826A CN1613826A CN 200410079398 CN200410079398A CN1613826A CN 1613826 A CN1613826 A CN 1613826A CN 200410079398 CN200410079398 CN 200410079398 CN 200410079398 A CN200410079398 A CN 200410079398A CN 1613826 A CN1613826 A CN 1613826A
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- halogen
- bittern
- carnallite
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- saturated
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- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 title claims abstract description 102
- 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 title claims abstract description 75
- 235000019341 magnesium sulphate Nutrition 0.000 title claims abstract description 52
- 229910052943 magnesium sulfate Inorganic materials 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 45
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 239000011591 potassium Substances 0.000 title claims abstract description 31
- 229910052700 potassium Inorganic materials 0.000 title claims abstract description 31
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 title abstract description 8
- 239000012267 brine Substances 0.000 title abstract description 7
- 150000002367 halogens Chemical class 0.000 claims abstract description 199
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 196
- 241001131796 Botaurus stellaris Species 0.000 claims abstract description 93
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims abstract description 48
- 238000001704 evaporation Methods 0.000 claims abstract description 37
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 34
- 230000008020 evaporation Effects 0.000 claims abstract description 32
- 150000003839 salts Chemical class 0.000 claims abstract description 28
- 239000002994 raw material Substances 0.000 claims abstract description 25
- 239000001103 potassium chloride Substances 0.000 claims abstract description 23
- 235000011164 potassium chloride Nutrition 0.000 claims abstract description 23
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 18
- 235000010755 mineral Nutrition 0.000 claims abstract description 18
- 239000011707 mineral Substances 0.000 claims abstract description 18
- 239000011780 sodium chloride Substances 0.000 claims abstract description 14
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims abstract description 4
- 229920006395 saturated elastomer Polymers 0.000 claims description 49
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 claims description 16
- 239000011734 sodium Substances 0.000 claims description 11
- 238000004458 analytical method Methods 0.000 claims description 9
- 239000012452 mother liquor Substances 0.000 claims description 8
- 239000011777 magnesium Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 230000035484 reaction time Effects 0.000 claims description 6
- 229910052708 sodium Inorganic materials 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 4
- 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 claims description 3
- ZGBSOTLWHZQNLH-UHFFFAOYSA-N [Mg].S(O)(O)(=O)=O Chemical compound [Mg].S(O)(O)(=O)=O ZGBSOTLWHZQNLH-UHFFFAOYSA-N 0.000 claims description 3
- 238000004090 dissolution Methods 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 3
- 239000013505 freshwater Substances 0.000 claims description 3
- -1 halogen salt Chemical class 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 230000002269 spontaneous effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 18
- 239000003337 fertilizer Substances 0.000 abstract description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 abstract description 3
- 229940072033 potash Drugs 0.000 abstract description 3
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 abstract description 3
- 235000015320 potassium carbonate Nutrition 0.000 abstract description 3
- 239000003814 drug Substances 0.000 abstract description 2
- 229910052564 epsomite Inorganic materials 0.000 abstract 3
- WRUGWIBCXHJTDG-UHFFFAOYSA-L magnesium sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Mg+2].[O-]S([O-])(=O)=O WRUGWIBCXHJTDG-UHFFFAOYSA-L 0.000 abstract 3
- 238000000926 separation method Methods 0.000 abstract 3
- 238000002360 preparation method Methods 0.000 abstract 2
- 238000005658 halogenation reaction Methods 0.000 abstract 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 abstract 1
- 230000008676 import Effects 0.000 description 4
- GMLLYEDWRJDBIT-UHFFFAOYSA-J magnesium;dipotassium;disulfate Chemical compound [Mg+2].[K+].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GMLLYEDWRJDBIT-UHFFFAOYSA-J 0.000 description 4
- 238000010587 phase diagram Methods 0.000 description 4
- 159000000000 sodium salts Chemical class 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention belongs to the technical field of production of potash fertilizers in salt chemical industry, and particularly relates to a method for preparing carnallite by using magnesium sulfate subtype potassium-containing brine as a raw material. The process flow of the invention is as follows: the method comprises the following steps of (1) evaporating raw halogen → first-stage halogen adding → evaporation → second-stage halogen adding → size fraction separation → carnallite ore preparation, and (ii) evaporating raw halogen → second-stage halogen adding → size fraction separation → carnallite ore preparation, wherein after evaporation of raw halogen and separation of epsomite and sodium chloride, no potassium salt mineral is separated out before saturation of carnallite, and first-stage halogen adding is not needed, otherwise, first-stage halogen adding is needed; evaporating the mixed brine after brine blending in a epsomite pool to separate out sodium chloride and epsomite; the brine obtained by the two different processes reaches K+The CE bittern obtained during saturation is potassium chloride and carnallite respectively mixed with epsom salt and sodium chloride in the saturation region, and then the mixture is mixed with old bittern to prepare the productObtaining carnallite ore; the production process flow is simple, the operation is easy, the prepared carnallite has good mineral content, the yield of the produced potassium chloride is high, no medicament is contained, and the contents of sodium chloride and magnesium sulfate are low. The method has the advantages of low production cost, small investment and no pollution.
Description
Technical field
The invention belongs to salt chemical engineering potash fertilizer production technical field, particularly a kind of to contain potassium bittern with magnesium sulfate be the method that raw material is produced carnallite.
Background technology
Carnallite is an intermediate raw material of producing Repone K, and Repone K is the indispensable fertilizer of agriculture production, and China is large agricultural country, and the potash fertilizer market requirement is big.Simultaneously the low-sodium carnalite ore deposit still is the high quality raw material of production higher-grade Repone K and MAGNESIUM METAL, barium fluxing agent.At present, the main source of carnallite is the method production of shining by the beach, salt pan with potassium chloride-type brine, secondly is to convert the halogen method with container to produce.The carnallite sodium chloride content height that solarization method in beach, salt pan is produced, the grain thickness in ore deposit differs, and contains a large amount of water-insolubles in the ore deposit, and the salt pan carnallite need gather, transport, and production cost is higher; The ratio of the Repone K/sodium-chlor of this carnallite is generally about 0.5.Be raw material, adopt the carnallite quality of container adding halogen method production good with potassium chloride-type brine.At present, magnesium sulfate contains potassium bittern mainly with beach, salt pan solarization method production potassium mixed salt, by-product carnallite.The carnallite that this method is produced also contains a large amount of sal epsom in the ore deposit except the shortcoming that above-mentioned potassium chloride-type brine salt pan carnallite is had, KCE content is low, and it is greatly unfavorable to bring for the production of follow-up Repone K.Adopting magnesium sulfate to contain potassium bittern is the method that raw material is produced carnallite, yet there are no record.
Summary of the invention
It is very low to the purpose of this invention is to provide a kind of production KCE content height, sodium-chlor, sal epsom content, and production cost is low, investment is little, technology is simple, contain the method that potassium bittern is raw material production high-quality carnallite with magnesium sulfate.
Technical scheme of the present invention is achieved in that a kind of to contain potassium bittern with magnesium sulfate be the method that raw material is produced carnallite in the present invention, its technical process is: → one section of 1. former halogen evaporation is converted halogen → evaporation → two and section is converted halogen → grade and separate → make carnallite, 2. former halogen evaporation is converted halogen → grade for → two sections and is separated → make carnallite, convert halogen and promptly be blended into bittern 2 for one section in the flow process, eliminate or part is eliminated the sylvite mineral of carnallitite before saturated and separated out; Two sections are converted halogen is that CE halogen is converted halogen production carnallite with old halogen, down together.Described raw material sulphuric acid magnesium hypotype contain potassium bittern have the halogen temperature more than 0 ℃ in the spontaneous evaporation process carnallitite saturated before, the saturated characteristics of sal epsom and double salt thereof in the bittern, feature of the present invention is:
Former halogen through the evaporation, analyse salt, when before carnallitite is saturated, having the sylvite mineral to separate out, then should be at K
+Before saturated bittern is imported the epsom salt pond and carry out one section and convert halogen, be blended into K
2＞K
E is situated betweenBittern 2, K wherein
2Be J ' mg/J ' the K value of bittern 2, K
C is situated betweenBe steady J ' mg/J ' the K value that E is ordered among the butt figure of simplifying that is situated between; It is the common saturation point of carnallitite, Repone K, epsom salt, sodium-chlor that E selects, and J ' mg, J ' K are the Mg that magnesium sulfate contains potassium bittern
+ 2, k
+The Ye Nieke index; Bittern 2 can be converted halogen mother liquor, also available two sections carnallitite pond bittern and old halogen behind the carnallitite with producing; Be blended into the concrete amount of bittern 2, can magnesium sulfate contain 15 ℃ in potassium bittern and 25 ℃ of steady data of simplifying butt figure that are situated between are the basis, calculate by undetermined coefficient to obtain; The best region that is blended into bittern 2 is to make to mix halogen through evaporating, analysing salt, reaches the saturated zone of carnallitite; Be blended into the optimum quantity of bittern 2 and analyse salt through evaporation, K so that mix halogen after converting halogen
+Bittern when reaching capacity is as the criterion for E point bittern among the figure.
Former halogen is after evaporating, separating out epsom salt, sodium-chlor, and no sylvite mineral are separated out before carnallitite is saturated, then need not convert halogen, are evaporated to K in the bittern
+Obtain the saturated CE halogen of carnallitite when saturated, import CE halogen pond and store.
The CE halogen that the inventive method obtains can also be used for the beach, salt pan and shine the production carnallite.
Be can be in former halogen evaporative process the opportunity that is blended into bittern 2, K
+Whenever be blended into K in bittern before saturated
+Be blended into the best when saturated.
The described mode of being blended into that is blended into bittern 2 can be blended into continuously, also can be interrupted being blended into; Can once be blended into, also can repeatedly be blended into, eliminate after the halogen or part is eliminated the sylvite mineral and separated out and be as the criterion to satisfy to convert.
Convert mixing halogen after the halogen in the evaporation of epsom salt pond, precipitated sodium chloride and epsom salt reach K in the bittern
+Obtain the bittern on the common saturated line of C-E-P among the steady simple butt figure of Jie when saturated, be the saturated altogether and carnallitite of Repone K and epsom salt, sodium-chlor and the bittern of epsom salt, the common saturation interval of sodium-chlor is CE halogen, wherein the common saturated bittern of Repone K, epsom salt and sodium-chlor claims sylvite point bittern, and the full altogether bittern of carnallitite and epsom salt, sodium-chlor claims carnallitite point bittern; This bittern importing CE bittern storage pool is standby;
The beach solarization of former halogen, precipitated sodium chloride and other non-sylvite mineral, K
+Be blended into bittern 2 before saturated, revaporization, analyse operations such as sodium-chlor, the epsom salt sodium salt pond that can coexist and carry out.
Is that 1: 0.5～3.0 ratios are carried out two sections and converted halogen with described CE halogen and old halogen with weight ratio, and fully stir, convert the halogen reaction times greater than 12 minutes, remove sodium-chlor and the very high particulate carnallite of epsom salt in the isolating mode of grade simultaneously, obtain the carnallite of low sodium, low sulfate radical;
The halogen mother liquor of converting of producing carnallite is drained into two sections carnallitite ponds, salt pan, and the beach is shone and is separated out two sections carnallites; Convert the isolated thin crystalline substance of halogen and can drain into two sections carnallitite pond precipitations together with converting the halogen mother liquor; The bittern part in two sections ponds can be used as bittern 2 and returns and convert halogen;
Two sections carnallites of separating out and to convert halogen carefully brilliant, but extraction with fresh water dissolution after, return the beach, salt pan and shine, produce CE bittern; After shining two sections carnallites of system, K
+Be that 0.05～0.18% bittern claims old halogen;
The component of the carnallite that this technology is produced is: K
+: 11.5～13.0%;
Mg
+ 2: 7.8～8.5%; SO
4 -2: 0.7～1.8%; Na
+: 0.7～2.0%; Carnallite granularity: 0.7～2.0mm; Kcl/Nacl＞5.0; Kcl/MgSO
4＞13.
Because it is that raw material is produced carnallite that the present invention adopts magnesium sulfate to contain potassium bittern, its technological process of production is simple, processing ease, the carnallite quality that makes is good, and the carnallite that makes with the inventive method is the preferred raw materials of process industry level, agricultural potassium chloride.Produce Repone K yield height, do not contain any medicament, water insoluble matter content is few, and sodium-chlor, sal epsom content are very low.The inventive method production cost is low, investment is little, pollution-free.
Description of drawings
The present invention has following accompanying drawing:
Fig. 1 contains the steady butt figure that simplifies of potassium bittern Jie for magnesium sulfate of the present invention;
Fig. 2 is a process flow sheet of the present invention.
Embodiment
How further specify technical solution of the present invention below in conjunction with drawings and Examples realizes: it is the method that raw material is produced carnallite that the present invention contains potassium bittern with magnesium sulfate, technical process is: → one section of 1. former halogen evaporation is converted halogen → evaporation → two and section is converted halogen → grade and separate → make carnallite, 2. former halogen evaporation is converted halogen → grade for → two sections and is separated → make carnallite, described raw material sulphuric acid magnesium hypotype contain potassium bittern have the halogen temperature more than 0 ℃ in the spontaneous evaporation process carnallitite saturated before, the saturated characteristics of sal epsom and double salt thereof in the bittern, feature of the present invention is:
Former halogen is poured into sodium salt Chi Tan shine, separate out other salt mines except that sylvite.
Former halogen through the evaporation, analyse salt, when before carnallitite is saturated, having the sylvite mineral to separate out, then should be at K
+Before saturated bittern is imported the epsom salt pond and carry out one section and convert halogen, be blended into K
2＞K
E is situated betweenBittern 2;
Convert mixing halogen after the halogen in the evaporation of epsom salt pond, precipitated sodium chloride and epsom salt reach K in the bittern
+The bittern CE halogen on the saturated line altogether of C-E-P among the steady simple butt figure that to be situated between when saturated imports CE halogen pond with this halogen and stores; The beach solarization of former halogen, precipitated sodium chloride and other non-sylvite mineral are blended into bittern 2 revaporization, analyse operations such as sodium-chlor, the epsom salt sodium salt pond that can coexist and carry out;
Former halogen is after epsom salt, sodium-chlor are separated out in evaporation, and no sylvite mineral are separated out before carnallitite is saturated, then need not convert halogen, are evaporated to K in the bittern
+Obtain the saturated CE halogen of carnallitite when saturated, import CE halogen pond and store;
Is that 1: 0.5～3.0 ratios are carried out two sections and converted halogen with described CE halogen and old halogen with weight ratio, and fully stirs, and removes sodium-chlor and the very high particulate carnallite of epsom salt in the isolating mode of grade simultaneously, obtains low sodium, hangs down the carnallite of sulfate radical;
The halogen mother liquor of converting of producing carnallite is drained into two sections carnallitite ponds, salt pan, and the beach is shone and is separated out two sections carnallites; Convert the isolated thin crystalline substance of halogen and can drain into two sections carnallitite pond precipitations together with converting the halogen mother liquor; Two sections carnallitite pond bittern or convert a halogen mother liquor part and can be used as bittern 2 and return and convert halogen;
Two sections carnallites of separating out and to convert halogen carefully brilliant, but extraction with fresh water dissolution after, return the beach, salt pan and shine, produce CE halogen; Shine the old halogen of two sections carnallites of system, a part is returned and is converted the halogen use, and redundance is discharged;
As be situated between shown in steady butt figure of simplification and the process flow sheet, get the former halogen of 15 ℃ of halogen temperature, 27.6Be ', as described in table one, it is simplified butt figure point index WO and falls into 15 ℃ of steady butt figure schoenite districts of simplifying that are situated between.Former halogen has the sylvite mineral to separate out before the evaporation carnallitite is saturated, need convert halogen rear section elimination sylvite mineral and separate out.
Embodiment 1.
Former halogen is at sodium salt pond evaporation precipitated sodium chloride, according to the bittern analytical results, near schoenite when saturated, solid, liquid separates, the bittern 31.8Be ' of this moment, 18 ℃ of halogen temperature, bittern imports the epsom salt pond and is blended into 17 ℃ of halogen temperature, 37.8Be ' old halogen, the purpose of converting halogen is to eliminate the sylvite mineral of former halogen before carnallitite is saturated to separate out.Convert the mixing bittern point MgSO in metastable phase diagram after the halogen
4On the line that solidus and E are ordered.When mixing halogen evaporation precipitated sodium chloride and epsom salt to carnallitite when saturated, its bittern point is positioned at the steady butt figure E point of simplifying that is situated between, and the CE halogen that obtain this moment is E point carnallitite saturated bittern, 34.4Be ', 17 ℃ of halogen temperature; Convert halogen and carry out in container, convert 8 liters of halogen device capacity, this halogen was converted the halogen part by weight 1: 2 with old halogen; Add carnallitite crystal seed 1000 grams when initially converting halogen, convert 20 minutes halogen reaction times, convert 100 rev/mins of halogen stirring velocitys, convert halogen and advance halogen amount 510 Grams Per Minutes, the low-sodium carnalite ore deposit component of acquisition is as table.List file names with in the table with E point bittern and shine the carnallite component of separating out through the beach.
Table one embodiment 1 converts halogen carnallite analytical results table
| The ore deposit name | K + | Mg 2+ | SO 4 -2 | Na + | CL + | Kcl/Nacl | K +Yield |
| Carnallite is shone on the beach | 8.78 | 8.49 | 11.62 | 3.82 | 30.50 | 1.72 | |
| Convert the halogen carnallite | 12.71 | 8.36 | 0.98 | 1.55 | 37.59 | 6.15 | 68.04 |
| Former halogen | ??1.53 | ??2.03 | ??2.76 | ??7.83 | ??17.2 | ||
| Old halogen | ??0.07 | ??8.77 | ??2.85 | ??0.12 | ??25.25 | ||
| CE halogen | ??1.63 | ??6.63 | ??3.92 | ??1.10 | ??20.62 |
Get the former halogen of 15 ℃ of halogen temperature, 27.6Be ', as described in table one, its phasor point index Wo falls into 15 ℃ of metastable phase diagram schoenite districts, and former halogen injects the sodium salt pond, the evaporation precipitated sodium chloride, and former halogen has the sylvite mineral to separate out before carnallitite is saturated through evaporation, then at K
+Bittern is imported the Epsom salts pond before saturated and be blended into old halogen, convert the mixing bittern point MgSO in metastable phase diagram after the halogen
4On the line that-C is ordered, mixing halogen is analysed salt through evaporation and is reached K
+When saturated, the bittern point is arranged in metastable phase diagram at the C point, and this CE halogen is the sylvite saturated bittern.Mix halogen and analyse salt through evaporation, part has been eliminated former halogen the separating out of sylvite before carnallitite is saturated, has promptly eliminated schoenite and has separated out.Convert halogen with this CE halogen and old halogen and produce carnallite, CE halogen is 1: 3 with the halogen part by weight of converting of old halogen, converts 15 minutes halogen reaction times, converts 80 rev/mins of halogen stirring velocitys, converts halogen and advances halogen amount 700 Grams Per Minutes, the Kcl/Nacl=5.30 of carnallite; Kcl/MgSO
4=15.85.Convert halogen carnallite component as table.
Table two embodiment 2 converts halogen carnallite analytical results table
| The ore deposit name | K + | ?Mg 2+ | ?SO 4 -2 | ?Na + | ?Cl - | ?K +Yield (%) |
| CE halogen | 2.35 | ?5.44 | ?5.25 | ?1.83 | ?16.73 | |
| Old halogen | 0.07 | ?8.77 | ?2.85 | ?0.12 | ?25.25 | |
| Convert the halogen carnallite | 12.93 | ?8.39 | ?1.24 | ?1.83 | ?38.37 | ????45.53 |
Embodiment 3.
Other implementation conditions are identical with embodiment 1, and CE halogen is 1: 3 with the halogen part by weight of converting of old halogen, converts 18 minutes halogen reaction times, and 100 rev/mins of stirring velocitys are converted halogen and advanced halogen amount 580 Grams Per Minutes, obtain carnallite: Kcl/Nacl=5.55; Kcl/MgSO
4=17.84.The component of converting the halogen carnallite is as table.
Table three embodiment 3 converts halogen carnallite analytical results table
| The ore deposit name | ??K + | ??Mg 2+ | ??SO 4 -2 | ?Na + | ?CL - | ?K +Yield (%) |
| CE halogen | ??1.63 | ??6.63 | ??3.92 | ?1.10 | ?20.62 | |
| Old halogen | ??0.18 | ??8.10 | ??3.17 | ?0.26 | ?22.02 | |
| Convert the halogen carnallite | ??12.43 | ??8.32 | ??1.06 | ?1.68 | ?37.24 | ?50.45 |
Embodiment 4.
Other conditions are identical with embodiment 1, CE halogen and old halogen were converted the halogen part by weight 1: 0.5, converted 12 minutes halogen reaction times, convert halogen and advance the halogen amount 870/ minute, and 60 rev/mins of stirring velocitys are converted halogen carnallite: Kcl/Nacl=5.0; Kcl/MgSO
4=14.83.Convert halogen carnallite component as table.
Table four embodiment 4 converts halogen carnallite analytical results table
| The ore deposit name | K + | ?Mg 2+ | ?SO 4 -2 | ?Na + | ?CL - | ?K +Yield (%) |
| Convert the halogen carnallite | 12.67 | ?8.35 | ?1.30 | ?1.90 | ?38.01 | ?25.54 |
| CE halogen | 1.63 | ?6.63 | ?3.92 | ?1.10 | ?20.62 | |
| Old halogen | 0.07 | ?8.77 | ?2.85 | ?0.12 | ?25.25 |
Claims (10)
- It is 1, a kind of that to contain potassium bittern with magnesium sulfate be the method that raw material is produced carnallite, its technical process is: → one section of 1. former halogen evaporation is converted halogen → evaporation → two and section is converted halogen → grade and separate → make carnallite, 2. former halogen evaporation is converted halogen → grade for → two sections and is separated → make carnallite, described raw material sulphuric acid magnesium hypotype contain potassium bittern have the halogen temperature more than 0 ℃ in the spontaneous evaporation process carnallitite saturated before, the saturated characteristics of sal epsom and double salt thereof in the bittern is characterized in that:A, former halogen through evaporation, analyse salt, when before carnallitite is saturated, having the sylvite mineral to separate out, then should be at K +Carry out one section before saturated and convert halogen, be blended into K 2＞K E is situated betweenBittern 2;B, convert mixing halogen after the halogen in the evaporation of epsom salt pond, precipitated sodium chloride and epsom salt reach K in the bittern +Obtaining CE halogen when saturated is Repone K and carnallitite are total to saturation interval respectively with epsom salt, sodium-chlor bittern, and this bittern importing CE bittern storage pool is standby;C, former halogen are through evaporation, and precipitated sodium chloride and epsom salt when no sylvite mineral are separated out before carnallitite is saturated, then need not converted halogen, reach K in the bittern +Obtain the saturated CE halogen of carnallitite when saturated;D, be that 1: 0.5～3.0 ratios are carried out two sections and converted halogen with weight ratio with described CE halogen and old halogen, and fully stir, convert the halogen reaction times greater than 12 minutes, simultaneously remove sodium-chlor and the very high particulate carnallite of epsom salt, obtain the carnallite of low sodium, low sulfate radical in the isolating mode of grade;E, the halogen mother liquor of converting that will produce carnallite drain into two sections carnallitite ponds, salt pan, and the beach is shone and separated out two sections carnallites; Convert the isolated thin crystalline substance of halogen and can drain into two sections carnallitite pond precipitations together with converting the halogen mother liquor;F, two sections carnallites of separating out and to convert halogen carefully brilliant, but extraction with fresh water dissolution after, return the beach, salt pan and shine, produce CE halogen; Old halogen behind two sections carnallites of solarization system, a part return converts the halogen use, and redundance is discharged;The component of the carnallite that g, this technology are produced is: K +: 11.5～13.0%;Mg + 2: 7.8～8.5%; SO 4 -2: 0.7～1.8%; Na +: 0.7～2.0%; Carnallite granularity: 0.2～0.7mm; Kcl/Nacl＞5.0; Kcl/MgSO 4＞13.
- 2, according to claim 1 to contain potassium bittern with magnesium sulfate be the method that raw material is produced carnallite, it is characterized in that: be blended into best region behind the bittern 2 and be make mix halogen through evaporation, analyse salt and reach the saturated zone of carnallitite; Be blended into the optimum quantity of bittern 2 and analyse salt through evaporation, K so that mix halogen after converting halogen +Bittern when reaching capacity is that the saturated E point bittern of carnallitite is as the criterion; The described concrete amount that is blended into bittern 2 can magnesium sulfate contains 15 ℃ in potassium bittern and 25 ℃ of steady data of simplifying butt figure that are situated between are the basis, calculates by undetermined coefficient to obtain.
- 3, according to claim 2 to contain potassium bittern with magnesium sulfate be the method that raw material is produced carnallite, it is characterized in that: the CE halogen that the inventive method obtains can also be used for the beach, salt pan and shine and produce carnallite.
- 4, according to claim 1 to contain potassium bittern with magnesium sulfate be the method that raw material is produced carnallite, it is characterized in that: the opportunity that is blended into bittern 2 is for can be in former halogen evaporative process, K +Whenever be blended into K in bittern before saturated +Be blended into the best when saturated.
- 5, according to claim 1 to contain potassium bittern with magnesium sulfate be the method that raw material is produced carnallite, and it is characterized in that: the described mode of being blended into that is blended into bittern 2 can be blended into continuously, also can be interrupted being blended into; Can once be blended into, also can repeatedly be blended into, eliminate the sylvite mineral after the halogen and separate out and be as the criterion to satisfy to convert.
- 6, containing potassium bittern with magnesium sulfate according to claim 1 or 5 is the method that raw material is produced carnallite, it is characterized in that: describedly be blended into being blended into of bittern 2 and can be blended into continuously, also can be interrupted being blended into; Can once be blended into, also can repeatedly convert halogen and go into, convert the halogen rear section and eliminate the sylvite mineral and separate out and be as the criterion to satisfy.
- 7, according to claim 1 to contain potassium bittern with magnesium sulfate be the method that raw material is produced carnallite, it is characterized in that: convert halogen with CE halogen and old halogen, can convert halogen in container, also can convert halogen salt Tanaka, convert halogen and be the best in container.
- 8,, it is characterized in that according to claim 1 or 7 described to contain potassium bittern with magnesium sulfate be the method that raw material is produced carnallite: the saturated CE halogen of carnallitite and old halogen convert halogen than with weight ratio be 1: 2.0 be the best.
- 9,, it is characterized in that according to claim 1 or 6 described to contain potassium bittern with magnesium sulfate be the method that raw material is produced carnallite: Repone K and carnallitite respectively with epsom salt, sodium-chlor altogether the bittern in the zone of saturation be bittern on the C-E-P saturated line.
- 10,, it is characterized in that according to claim 1 or 7 described to contain potassium bittern with magnesium sulfate be the method that raw material is produced carnallite: described old halogen for two sections carnallites of the system of shining after, K +Bittern 0.05～0.18%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410079398 CN1613826A (en) | 2004-10-13 | 2004-10-13 | Method for preparing carnallite from magnesium sulfate subtype potassium-containing brine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200410079398 CN1613826A (en) | 2004-10-13 | 2004-10-13 | Method for preparing carnallite from magnesium sulfate subtype potassium-containing brine |
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| CN1613826A true CN1613826A (en) | 2005-05-11 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100383044C (en) * | 2005-07-25 | 2008-04-23 | 魏新俊 | Method for producing carnallite in low sodium or potassium chloride by using brine of containing potassium |
| CN102530994A (en) * | 2012-01-05 | 2012-07-04 | 中国科学院青海盐湖研究所 | Method for preparing potassium chloride from carnallite containing magnesium sulfate |
| CN103204520A (en) * | 2012-10-18 | 2013-07-17 | 中国科学院青海盐湖研究所 | Method for preparing single-form potassic salt ore from plateau sulfate type salt lake brine |
| CN115849417A (en) * | 2023-01-03 | 2023-03-28 | 青海盐湖工业股份有限公司 | Process for preparing carnallite |
-
2004
- 2004-10-13 CN CN 200410079398 patent/CN1613826A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100383044C (en) * | 2005-07-25 | 2008-04-23 | 魏新俊 | Method for producing carnallite in low sodium or potassium chloride by using brine of containing potassium |
| CN102530994A (en) * | 2012-01-05 | 2012-07-04 | 中国科学院青海盐湖研究所 | Method for preparing potassium chloride from carnallite containing magnesium sulfate |
| CN103204520A (en) * | 2012-10-18 | 2013-07-17 | 中国科学院青海盐湖研究所 | Method for preparing single-form potassic salt ore from plateau sulfate type salt lake brine |
| CN103204520B (en) * | 2012-10-18 | 2015-03-18 | 中国科学院青海盐湖研究所 | Method for preparing single-form potassic salt ore from plateau sulfate type salt lake brine |
| CN115849417A (en) * | 2023-01-03 | 2023-03-28 | 青海盐湖工业股份有限公司 | Process for preparing carnallite |
| CN115849417B (en) * | 2023-01-03 | 2024-06-11 | 青海盐湖工业股份有限公司 | Process for preparing carnallite |
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