CN111807387A - Potassium nitrate purification device - Google Patents
Potassium nitrate purification device Download PDFInfo
- Publication number
- CN111807387A CN111807387A CN202010757771.0A CN202010757771A CN111807387A CN 111807387 A CN111807387 A CN 111807387A CN 202010757771 A CN202010757771 A CN 202010757771A CN 111807387 A CN111807387 A CN 111807387A
- Authority
- CN
- China
- Prior art keywords
- potassium nitrate
- bottom plate
- jar body
- solution
- wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 235000010333 potassium nitrate Nutrition 0.000 title claims abstract description 21
- 239000004323 potassium nitrate Substances 0.000 title claims abstract description 21
- 238000000746 purification Methods 0.000 title claims abstract description 12
- 238000005485 electric heating Methods 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims description 20
- 238000003466 welding Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 9
- 239000000243 solution Substances 0.000 description 38
- 239000012047 saturated solution Substances 0.000 description 9
- 239000013078 crystal Substances 0.000 description 8
- 238000002425 crystallisation Methods 0.000 description 5
- 230000008025 crystallization Effects 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 235000019643 salty taste Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D9/00—Nitrates of sodium, potassium or alkali metals in general
- C01D9/16—Purification
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses a potassium nitrate purifying device which comprises a bottom plate, a fixed rod, a mounting frame and a tank body, wherein support rods are welded on the outer wall of the tank body at equal intervals, the bottom ends of the support rods are welded on the upper surface of the bottom plate, a supporting seat is welded on the lower surface of the bottom plate, a discharge port is formed in the bottom end of the inner wall of the tank body, a connecting buckle is movably clamped at the upper end of the fixed rod and fixed on the outer wall of the upper end of the tank body through bolts, a power wire is arranged at one end of the fixed rod, an electric heating rod is arranged at the other end of the fixed rod, two ends of the mounting frame are welded on. The invention has compact structure and convenient use, is convenient for heating and circulating the solution, improves the purification efficiency and meets the use requirements of personnel.
Description
Technical Field
The invention relates to the technical field of substance purification, in particular to a potassium nitrate purification device.
Background
Potassium nitrate refers to nitrate of potassium, commonly called potassium nitrate or soil nitrate, is colorless transparent orthorhombic crystal or rhombic crystal or white powder, and has no odor, no toxicity, salty taste and cool feeling. The water-soluble polyurethane has the advantages of small moisture absorption in air, difficult agglomeration, easy water solubility and rapid increase of the solubility along with the temperature rise. Can be dissolved in liquid ammonia and glycerin, and can not be dissolved in absolute ethyl alcohol and ethyl ether, and the potassium nitrate is a strong oxidant, and can be contacted with organic matter to cause combustion and explosion. Therefore, the potassium nitrate should be stored in a cool and dry place away from the fire and heat sources. The materials are not mixed with reducing agent, acid, easily combustible substance and metal powder.
Because the solubility of potassium nitrate is greatly changed along with the temperature, and the solubility is smaller at low temperature, the cooling crystallization (cooling of a hot saturated solution) is the best method, the principle of the cooling crystallization is that the temperature is reduced, the solubility of a substance is reduced, the solution is saturated, and redundant solute which cannot be dissolved can be separated out. For example, alkali removal in winter is the reason (by using temperature change). The principle of evaporative crystallization is that under the condition of constant temperature or before and after evaporation, the temperature is unchanged, the solubility is unchanged, the water content is reduced, and the solution is saturated, namely redundant solute is separated out. For example, the salt is sun-dried in the salt lake in summer, the temperature is reduced for crystallization, the solution is heated and concentrated to obtain a hot saturated solution, then the hot saturated solution is filtered to remove insoluble impurities, the crystals are cooled for crystallization and filtered, the obtained crystals can contain other impurities, and the crystals are recrystallized if further purification is needed.
Traditional purification device adopts the end hot type usually, and the circulation and the transfer of inconvenient solution for this reason, and the end hot type is inconvenient being heated of solution even, reduces reaction efficiency by a wide margin, can not satisfy personnel's user demand.
Disclosure of Invention
The invention aims to provide a potassium nitrate purifying device which has the advantages of compact structure, convenience in use, convenience in heating and circulating of solution, improvement in purifying efficiency and capability of meeting the use requirements of personnel, and solves the problems that the traditional purifying device usually adopts a bottom heating type, so that the circulation and transfer of the solution are inconvenient, the bottom heating type is inconvenient, the solution is uniformly heated, the reaction efficiency is greatly reduced, and the use requirements of the personnel cannot be met.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a potassium nitrate purification device, includes bottom plate, dead lever, mounting bracket and jar body, the outer wall equidistance welding of the jar body has the bracing piece, and the bottom welding of bracing piece is at the upper surface of bottom plate, the lower skin weld of bottom plate has the supporting seat, and the inner wall bottom of the jar body is equipped with the discharge port, the upper end activity joint of dead lever has the connector link, and the connector link passes through the bolt fastening at the upper end outer wall of the jar body, and the one end of dead lever is equipped with the power cord, and the other end of dead lever is equipped with the electric bar, the both ends welding of mounting bracket is at the upper surface of.
Preferably, the lower surface of the tank body is provided with a connecting pipe, a butterfly valve body is installed on the connecting pipe, and the connecting pipe corresponds to the position of the discharge port.
Preferably, a wire hole matched with the power wire is arranged in the fixing rod, and the power wire penetrates through the wire hole to be electrically connected with the electric heating rod.
Preferably, the lower end of the stirring shaft is provided with a stirring blade, and the stirring blade is positioned in the middle of the lower end of the inner wall of the tank body.
Preferably, the mounting frame is provided with a rotating hole matched with the stirring shaft, and the stirring shaft is rotatably arranged in the rotating hole.
Preferably, the number of the supporting seats is four, and the four supporting seats are distributed on the lower surface of the bottom plate in a rectangular array.
Compared with the prior art, the invention has the following beneficial effects:
during the use of the potassium nitrate purifying device, the solution and the raw materials can be poured into the tank body to dissolve the raw materials in the solution medium, the electric heating rod is electrified to work by switching on an external power supply to generate heat, the solution in the tank body is heated, the saturated solution is obtained by heating and concentrating, at the moment, the motor body is electrified to work the stirring shaft which stirs the solution to uniformly heat the solution and accelerate the material to be dissolved in the solution, when the solution tends to be saturated, the butterfly valve body can be opened to enable the solution in the tank body to fall down together with insoluble impurities, the solution enters the external heat filtering device through the connecting pipe to be filtered and purified, and then the temperature is reduced (cooled to room temperature) to separate out crystals from the saturated solution, so that the potassium nitrate purifying device has a compact structure, is convenient to use, facilitates the heating and the circulation of the solution, and improves the purifying efficiency, the use requirements of personnel are met.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic structural diagram of A in FIG. 1 according to the present invention.
In the figure: 1. a base plate; 2. a butterfly valve body; 3. a discharge port; 4. a connecting pipe; 5. a support bar; 6. a supporting seat; 7. an electric heating rod; 8. fixing the rod; 9. a mounting frame; 10. a motor body; 11. a tank body; 12. a stirring shaft; 13. stirring blades; 14. a power line; 15. a connecting buckle.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 3, an embodiment of the present invention includes: the utility model provides a potassium nitrate purification device, includes bottom plate 1, dead lever 8, mounting bracket 9 and jar body 11, and the outer wall equidistance welding of jar body 11 has bracing piece 5, and the bottom welding of bracing piece 5 is at the upper surface of bottom plate 1, and the lower skin weld of bottom plate 1 has supporting seat 6, and supporting seat 6 is four altogether, and four supporting seats 6 are rectangle array distribution at the lower surface of bottom plate 1, in the use, can empty solution and raw materials and get into jar body 11 in for the raw materials dissolves in the solution medium.
The inner wall bottom of the jar body 11 is equipped with the discharge port 3, the upper end activity joint of dead lever 8 has connector link 15, connector link 15 passes through the bolt fastening at the upper end outer wall of the jar body 11, and the one end of dead lever 8 is equipped with power cord 14, the other end of dead lever 8 is equipped with electric rod 7, be equipped with the line hole with 14 looks adaptations of power cord in the dead lever 8, and power cord 14 passes the line hole and is connected with electric rod 7 electricity each other, through switch-on external power supply, make electric rod 7 circular telegram work, and then produce the heat, heat the solution in the jar body 11, obtain saturated solution through heating concentration.
It should be noted that the structure of the electric heating rod 7 is the existing mature technology, the working principle and the internal structure thereof are known to those skilled in the art, and the present invention only utilizes the function thereof and does not improve the internal structure thereof, and therefore, detailed description thereof is omitted.
The both ends welding of mounting bracket 9 is at the upper surface of bottom plate 1, and the upper surface of mounting bracket 9 is equipped with motor body 10, rotate on the motor body 10 and install (mixing) shaft 12, be equipped with the rotation hole with (mixing) shaft 12 looks adaptation on mounting bracket 9, and (mixing) shaft 12 rotates and installs in rotating the hole, the lower extreme of (mixing) shaft 12 is equipped with stirring leaf 13, and stirring leaf 13 is located the inner wall lower extreme intermediate position department of jar body 11, motor body 10 circular telegram makes (mixing) shaft 12 work, stirring shaft 12 stirs solution, make solution be heated evenly, the material dissolves in solution with higher speed.
The motor body 10 is 5IK40RGN-C, and has the advantages of low noise, high efficiency, long service life and the like.
The lower surface of the jar body 11 is equipped with connecting pipe 4, install butterfly valve body 2 on the connecting pipe 4, and connecting pipe 4 is corresponding with the position of discharge port 3, when solution tends to the saturation, can open butterfly valve body 2 and make the interior solution of jar body 11 together with insoluble impurity whereabouts, enter into external hot filter equipment through connecting pipe 4 in, filter the purification to solution, then rethread reduce temperature (cool to room temperature), make the crystal appear from saturated solution can, compact structure, it is convenient to use, make things convenient for the heating and the circulation of solution, improve purification efficiency, satisfy personnel's user demand.
The working principle is as follows: during the use of the potassium nitrate purifying device, the solution and the raw materials can be poured into the tank body 11 to be dissolved in the solution medium, the electric heating rod 7 is electrified to work by switching on an external power supply to generate heat, the solution in the tank body 11 is heated, saturated solution is obtained by heating and concentrating, at the moment, the motor body 10 is electrified to work the stirring shaft 12, the stirring shaft 12 is used for stirring the solution to uniformly heat the solution, the dissolution of the materials in the solution is accelerated, when the solution tends to be saturated, the butterfly valve body 2 can be opened to enable the solution in the tank body 11 and insoluble impurities to fall down, the solution enters an external hot filtering device through the connecting pipe 4 to be filtered and purified, and then the temperature is reduced (cooled to room temperature) to separate out crystals from the saturated solution.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides a potassium nitrate purification device, includes bottom plate (1), dead lever (8), mounting bracket (9) and jar body (11), its characterized in that: the utility model discloses a storage tank, including the jar body (11), the outer wall equidistance welding of the jar body has bracing piece (5), and the bottom welding of bracing piece (5) is at the upper surface of bottom plate (1), the lower skin weld of bottom plate (1) has supporting seat (6), and the inner wall bottom of the jar body (11) is equipped with discharge port (3), the upper end activity joint of dead lever (8) has connector link (15), and connector link (15) pass through the bolt fastening at the upper end outer wall of the jar body (11), and the one end of dead lever (8) is equipped with power cord (14), and the other end of dead lever (8) is equipped with electrical bar (7), the both ends welding of mounting bracket (9) is at the upper surface of bottom plate (1), and the upper surface of mounting bracket (9) is equipped with.
2. The potassium nitrate purifying apparatus according to claim 1, wherein: the lower surface of the tank body (11) is provided with a connecting pipe (4), the connecting pipe (4) is provided with a butterfly valve body (2), and the connecting pipe (4) corresponds to the position of the discharge port (3).
3. The potassium nitrate purifying apparatus according to claim 1, wherein: a wire hole matched with the power wire (14) is formed in the fixing rod (8), and the power wire (14) penetrates through the wire hole to be electrically connected with the electric heating rod (7).
4. The potassium nitrate purifying apparatus according to claim 1, wherein: the lower extreme of (mixing) shaft (12) is equipped with stirring leaf (13), and stirring leaf (13) are located the inner wall lower extreme intermediate position department of jar body (11).
5. The potassium nitrate purifying apparatus according to claim 1, wherein: the mounting rack (9) is provided with a rotating hole matched with the stirring shaft (12), and the stirring shaft (12) is rotatably arranged in the rotating hole.
6. The potassium nitrate purifying apparatus according to claim 1, wherein: the number of the supporting seats (6) is four, and the four supporting seats (6) are distributed on the lower surface of the bottom plate (1) in a rectangular array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010757771.0A CN111807387A (en) | 2020-07-31 | 2020-07-31 | Potassium nitrate purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010757771.0A CN111807387A (en) | 2020-07-31 | 2020-07-31 | Potassium nitrate purification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111807387A true CN111807387A (en) | 2020-10-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010757771.0A Pending CN111807387A (en) | 2020-07-31 | 2020-07-31 | Potassium nitrate purification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111807387A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2011152457A (en) * | 2011-12-22 | 2013-06-27 | Федеральное Государственное Унитарное Предприятие "Государственный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Химических Реактивов И Особо Чистых Химических Веществ" | METHOD FOR CLEANING POTASSIUM NITRATE |
| CN203668013U (en) * | 2013-12-06 | 2014-06-25 | 宏达光电玻璃(东莞)有限公司 | Potassium nitrate purification equipment |
| CN104891766A (en) * | 2015-06-10 | 2015-09-09 | 北京洁绿科技发展有限公司 | Sludge pyrohydrolysis device and method |
| CN204897432U (en) * | 2015-08-25 | 2015-12-23 | 浏阳市金和化工有限公司 | Potassium nitrate fast reaction separator |
| CN205235454U (en) * | 2015-12-14 | 2016-05-18 | 昆明青上化工有限公司 | A reactive crystallization groove for producing potassium nitrate |
| CN205435743U (en) * | 2016-03-28 | 2016-08-10 | 苏州美嘉汇食品科技有限公司 | Reaction kettle |
| CN106955653A (en) * | 2017-03-07 | 2017-07-18 | 中信大锰矿业有限责任公司 | A kind of reactor of net cover type agitator |
| CN207957787U (en) * | 2018-01-19 | 2018-10-12 | 江西金利达钾业有限责任公司 | A kind of potassium nitrate equipment for purifying |
| CN108970569A (en) * | 2018-09-26 | 2018-12-11 | 浙江省嘉善县第中学 | A kind of reaction unit for chemical experiment |
| CN210825456U (en) * | 2019-09-23 | 2020-06-23 | 湖南美奥钾业有限责任公司 | A purification device for potassium nitrate processing |
| CN210825455U (en) * | 2019-09-23 | 2020-06-23 | 湖南美奥钾业有限责任公司 | High-efficient purification device of potassium nitrate |
-
2020
- 2020-07-31 CN CN202010757771.0A patent/CN111807387A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2011152457A (en) * | 2011-12-22 | 2013-06-27 | Федеральное Государственное Унитарное Предприятие "Государственный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Химических Реактивов И Особо Чистых Химических Веществ" | METHOD FOR CLEANING POTASSIUM NITRATE |
| CN203668013U (en) * | 2013-12-06 | 2014-06-25 | 宏达光电玻璃(东莞)有限公司 | Potassium nitrate purification equipment |
| CN104891766A (en) * | 2015-06-10 | 2015-09-09 | 北京洁绿科技发展有限公司 | Sludge pyrohydrolysis device and method |
| CN204897432U (en) * | 2015-08-25 | 2015-12-23 | 浏阳市金和化工有限公司 | Potassium nitrate fast reaction separator |
| CN205235454U (en) * | 2015-12-14 | 2016-05-18 | 昆明青上化工有限公司 | A reactive crystallization groove for producing potassium nitrate |
| CN205435743U (en) * | 2016-03-28 | 2016-08-10 | 苏州美嘉汇食品科技有限公司 | Reaction kettle |
| CN106955653A (en) * | 2017-03-07 | 2017-07-18 | 中信大锰矿业有限责任公司 | A kind of reactor of net cover type agitator |
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| CN210825456U (en) * | 2019-09-23 | 2020-06-23 | 湖南美奥钾业有限责任公司 | A purification device for potassium nitrate processing |
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Application publication date: 20201023 |