CN201634445U - Alumina tube digestion device - Google Patents
Alumina tube digestion device Download PDFInfo
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- CN201634445U CN201634445U CN2010200021306U CN201020002130U CN201634445U CN 201634445 U CN201634445 U CN 201634445U CN 2010200021306 U CN2010200021306 U CN 2010200021306U CN 201020002130 U CN201020002130 U CN 201020002130U CN 201634445 U CN201634445 U CN 201634445U
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Abstract
The utility model relates to an alumina tube digestion device, which belongs to metallurgical and chemical fields and aims to realize the large-scale alumina production. The alumina tube digestion device comprises a sleeve system, a condensate system, a flash tank system, a dilution tank system and a diaphragm pump. The diaphragm pump is connected with the sleeve system; the sleeve system is connected with the flash tank system and the condensate system; and the sleeve comprises three sleeve groups, wherein each sleeve group mainly comprises a primary original slurry heating sleeve, a primary stock solution heating sleeve, a ninth-level preheating sleeve, a primary new steam heating pipe and a primary reaction retaining tube connected in sequence. The overall investment of the utility model can be controlled to be below 140 million, and a single production line can achieve the production capacity of 750-800 thousand tons per year.
Description
Technical field
The utility model belongs to field of metallurgy and chemical engineering, is specifically related to a kind of aluminum oxide pipeline dissolving device.
Background technology
The high pressure stripping is the core process of Bayer process alumina producing, and the technical scheme of both direction is arranged at present.The one, French IP technology, its major technique equipment is an autoclave; The 2nd, the canalization dissolving-out technology, its core is fully in pipeline internal heating and reaction.Owing to be difficult to by autoclave to maximize and invest high restriction, the production capacity of a line of IP technology is limited within 500,000 tons of aluminum oxide, and the canalization system single line production capacity (all less than 500,000 tons) generally less than normal of China, and be equipped with a spot of autoclave bar none so that reaction time to be provided, not canalization truly.There is the single line production capacity to reach 700,000 tons canalization system abroad, but can't handles the diaspore bauxite of China at present.So far, present domestic canalization dissolving-out technology device and the corresponding techniques thereof that single line is produced aluminum oxide more than 700,000 tons per year of still not having, this technological gap has limited the technical development of domestic field of metallurgy and chemical engineering.
The utility model content
The purpose of this utility model is to solve above-mentioned technological gap, provides a kind of and can realize system's production capacity maximization, less energy-consumption, aluminum oxide pipeline dissolving device easy and simple to handle.
For achieving the above object, the utility model provides a kind of aluminum oxide pipeline dissolving device, comprises cannula system, condensate system, flash drum system, dilution trap system and surge pump;
Described surge pump connects described cannula system;
Described cannula system is connected with described flash drum system and condensate system;
Described flash drum system is connected with described dilution trap system.
Described cannula system comprises three group's sleeve pipes, and the described sleeve pipe of every group is mainly stopped pipe and connected to form successively by one-level raw pulp heating muff, one-level stoste heating muff, nine grades of pre-thermal sleeves, one-level live steam heating muff and first order reactions.
Described raw pulp heating muff model is 3 * Φ 168 * 7, long 240m;
Described stoste heating muff model is 3 * Φ 168 * 7, long 240m;
Described preheating sleeve pipe model is 3 * Φ 168 * 9, long 240m;
Described live steam heating muff model is 3 * Φ 168 * 9, long 720m;
It number is Φ 477 * 20 that described reaction stops cast, length overall 560m.
The shared cover flash drum system of described three group's cannula systems, described flash drum system comprises ten flash drums;
Described ten flash drums are connected successively, and wherein first flash drum and described reaction stop pipe coupling, and the tenth flash drum is connected with described dilution trap, and the secondary steam output tube of described ten flash drums is connected with described three group's telescopic corresponding pressure levels respectively;
Described ten flash drums are pressed ladder and are arranged that the described ten flash drum is minimum, and described first flash drum is the highest, adjacent between bench height differ 300mm.
Described surge pump specification is selected flow Q=380m for use
3/ h, pressure are 9.0Mpa.
The aluminum oxide pipeline dissolving device that assembles according to technical solutions of the utility model possesses following some feature:
(1) its core technology is: slip preheating, heating, reaction stop and realize in pipeline fully, corresponding raw pulp desiliconization heating muff of the secondary steam of the tenth flash drum and stoste heating muff, the 9th corresponding step by step first to nine grade of pre-thermal sleeve of secondary steam to primary flash tank, utilize slip flash distillation secondary vapour heating slip, ore pulp after the preheating enters and enters reaction stop pipe after the live steam heating muff is heated to 280 ℃ with live steam again, adopts autoclave to react the process program of stop even slip preheating in the traditional technology thereby replaced fully.The improvement of this technical scheme can be saved at least 3,000 ten thousand yuan investment, and accordingly can dissolving-out process in reduce about 5.7kwh/t-Al
2O
3Power consumption, and further saved repair and maintenance expense to autoclave;
(2) heat transfer coefficient of technical solutions of the utility model middle sleeve interchanger is more than 2 times of the autoclave heating tube bundle coefficient of heat transfer, therefore can save steam consumption, makes steam mono-consumption be reduced to 1.65t/t-Al
2O
3Below;
(3) provide 10-15 minute reaction time because employing reaches the pipeline of 560m, and guarantee to keep 280 ℃ temperature of reaction in the pipeline, thereby can realize quick stripping reaction;
(4) form by three group's sleeve pipes in view of the stripping pipe production line that is proposed in the technical scheme, make organization of production more flexible, can be with the online isolation cleaning of a certain group that reaches the cycle of operation, dispense with parking has improved operation factor; Adopt a large amount of standard pipe fittings in addition, maintenance is become be more prone to;
(5) owing to there is not pulse buffer, year is saved about 2,300,000 yuan of the electricity charge when reducing by 7,000,000 yuan of investments;
In sum, the gross investment of the aluminum oxide pipeline dissolving device that technical solutions of the utility model provided can be controlled at below 1.4 hundred million, and possess wall scroll production line production capacity and reach ten thousand tons/year of 75-80, realized maximizing and produced, filled up domestic field of metallurgy and chemical engineering and do not produced the canalization dissolving-out technology device of aluminum oxide more than 700,000 tons and the blank of corresponding techniques thereof per year, thereby the technical development of existing field of metallurgy and chemical engineering has been had far-reaching influence about still there being single line.
Description of drawings
Fig. 1 is the aluminum oxide pipeline dissolving device structural representation that technical solutions of the utility model proposed;
Fig. 2 is aluminum oxide pipeline dissolving device unit plot plan that technical solutions of the utility model provided;
Fig. 3 is aluminum oxide pipeline dissolving device unit process flow sheet that technical solutions of the utility model provided.
Embodiment
For making the purpose of this utility model, content and advantage clearer,, embodiment of the present utility model is described in further detail below in conjunction with drawings and Examples.Following examples only are used for the technical solution of the utility model more clearly is described, and can not limit protection domain of the present utility model with this.
Embodiment 1
Present embodiment specifically describes the set structure of the aluminum oxide pipeline dissolving device that technical solutions of the utility model provided.
As shown in Figure 1, present embodiment provides a kind of aluminum oxide pipeline dissolving device, comprises cannula system, condensate system, flash drum system, dilution trap system and three surge pumps;
Described three surge pumps connect described cannula system respectively;
Described surge pump specification is selected flow Q=380m for use
3/ h, this flow indicator can be according to the user intention adjustment, and pressure is 8.0Mpa, and flow range is 290-350m during operation
3/ h.
Described cannula system is connected with described flash drum system and condensate system;
Described cannula system comprises three group's sleeve pipes, a shared cover slip flash drum system and the condensate system of described three group's sleeve pipes, the described sleeve pipe of every cover are mainly stopped pipe and are connected to form successively by one-level raw pulp heating muff, one-level stoste heating muff, nine grades of pre-thermal sleeves, one-level live steam heating muff and first order reactions;
Described raw pulp heating muff model is 3 * Φ 168 * 7, and long 240m, flow velocity are 1.88-1.92m/s;
Described stoste heating muff model is 3 * Φ 168 * 7, and long 240m, flow velocity are 1.88-1.92m/s;
Described preheating sleeve pipe model is 3 * Φ 168 * 9, and long 240m, flow velocity are 1.88-1.92m/s;
Described live steam heating muff model is 3 * Φ 168 * 9, and long 720m, flow velocity are 1.88-1.92m/s;
It number is Φ 477 * 20 that described reaction stops cast, and length overall 560m, flow velocity are 0.67m/s, and reaction time is 10-15 minute.
Main pipeline index such as following table:
| Pipeline | Specification | Flow velocity | Sectional area | Pipe range | Valve |
| m/s | m2 | m | |||
| The surge pump outlet pipe | Φ273×12 | 1.98 | 0.049 | DN250 PN10.0 | |
| Sleeve pipe punishment in advance elbow | Φ273×16 | 1.98 | 0.049 | ||
| Pipe in the sleeve pipe | Φ168×9 | 1.98 | 0.0177 | ||
| Stop pipe | Φ477×20 | 0.68 | 0.15 | 560 | |
| The flash drum inlet pipe is managed in stop | Φ325×16 | 1.48 | 0.07 | DN300 PN10.0 | |
| Flash distillation charge tube Nt110-106 | Φ426×16 | 1.67-2.53 | 0.122 | ||
| Flash distillation charge tube Nt106-101 | Φ426×16 | 1.55-1.85 | 0.122 | ||
| Flash distillation charge tube Nt101-Tt101 | Φ426×16 | 1.45-1.83 | 0.122 | ||
| Main team pipe | Φ325×16 | 0.07 |
Every group of sleeve pipe can onlinely switch, cleaning maintenance behind the isolation blowing, and the cleaning repair time cleans out immediately and comes into operation by consideration in 6 days; Stop when only breaking down with other synergic system in the flash drum system comprehensively; Cannula system operation total length 3440m (contain the 560m reaction and stop pipe).
300 ℃ of described cannula system live steam 9.0-9.5Mpa, temperature, temperature of superheat is 325 ℃, thalidomide is reserved a mouthful top pressure 5.53Mpa, maximum resistance of ducting 2.29Mpa, maximum working pressure 7.81Mpa; Concrete Resistance Distribution such as following table.
| Pipeline | Length m | Peak flow m3/h | Resistance Mpa | |
| 1-6 level cannula primary heater | 1440 | 350 | 1.02 |
| Pipeline | Length m | Peak flow m3/h | Resistance Mpa | |
| 7-9 level cannula primary heater | 720 | 350 | 0.56 | |
| 10 grades of double pipe heaters | 720 | 362 | 0.64 | |
| 11 grades stop pipe | 1800 | 362 | 0.08 | |
| Other charge tube | 300 | 350-362 | 0.01 | |
| Resistance adds up to | 4980 | 2.31 | ||
| The highest response saturated vapor pressure | 5.53 | |||
| Maximum working pressure | 7.81 |
Described flash drum system comprises ten flash drums, and all baiting valve is equipped with in bottom discharges and waist discharging on the discharge nozzle; Wear-resisting awl supports and adopts back taper;
Described ten flash drums are connected successively, and wherein first flash drum and described reaction stop pipe coupling, and the tenth flash drum is connected with described dilution trap, and the secondary steam of described ten flash drums is connected with described three group's telescopic corresponding pressure levels respectively;
Described ten flash drums are pressed ladder and are arranged that the described ten flash drum is minimum, and described first flash drum is the highest, adjacent between bench height differ 300mm.
Described dilution trap system comprises a dilution trap and three dilution pits;
Described three dilution pit models are Φ 12500 * 20000, press stepped appearance and arrange, each other potential difference 900mm.
In conjunction with Fig. 2, the major equipment of one group of device is as shown in the table:
| Sequence number | Equipment | Specification | Quantity (platform) |
| 1 | Surge pump | DGM380-90 | 3 |
| 2 | Flash drum Nt101 | Φ6000×9700 0.6Mpa | 1 |
| 3 | Flash drum Nt102 | Φ6000×9700 0.6Mpa | 1 |
| 4 | Flash drum Nt103 | Φ5000×9700 0.8Mpa | 1 |
| 5 | Flash drum Nt104 | Φ4500×9700 1.0Mpa | 1 |
| 6 | Flash drum Nt105 | Φ4500×9700 1.3Mpa | 1 |
| 7 | Flash drum Nt106 | Φ4000×9700 1.6Mpa | 1 |
| Sequence number | Equipment | Specification | Quantity (platform) |
| 8 | Flash drum Nt107 | Φ3600×9700 2.1Mpa | 1 |
| 9 | Flash drum Nt108 | Φ3200×9700 2.7Mpa | 1 |
| 10 | Flash drum Nt109 | Φ3000×9700 3.3Mpa | 1 |
| 11 | Flash drum Nt110 | Φ3000×9700 4.2Mpa | 1 |
| 12 | Condensation water pot Np101 | Φ2400×2780 0.4Mpa | 1 |
| 13 | Condensation water pot Np102 | Φ2400×2780 0.6Mpa | 1 |
| 14 | Condensation water pot Np103 | Φ2200×2550 0.8Mpa | 1 |
| 15 | Condensation water pot Np104 | Φ2200×2550 1.0Mpa | 1 |
| 16 | Condensation water pot Np105 | Φ1500×2190 1.3Mpa | 1 |
| 17 | Condensation water pot Np106 | Φ1300×2100 1.6Mpa | 1 |
| 18 | Condensation water pot Np107 | Φ1000×1920 2.1Mpa | 1 |
| 19 | Condensation water pot Np108 | Φ1000×1926 2.7Mpa | 1 |
| 20 | Condensation water pot Np109 | Φ800×1822 3.3Mpa | 1 |
| 21 | Condensation water pot Np110 | Φ800×1822 4.2Mpa | 1 |
| 22 | Condensation water pot Np111-114 | Φ1000×2326 9.5Mpa | 3 |
| 23 | Stoste sleeve pipe Ra100 | 3×Φ168×7，L60×4，335m 2, outer Φ 510 * 10 | 2 |
| 24 | Desiliconization sleeve pipe Ra101 | 3×Φ168×7，L60×4，335m 2, outer Φ 510 * 10 | 2 |
| 25 | Pre-thermal sleeve Ra102 | 3×Φ168×9，L60×4，335m 2, outer Φ 510 * 10 | 3 |
| 26 | Pre-thermal sleeve Ra103 | 3×Φ168×9，L60×4，335m 2, outer Φ 510 * 10 | 3 |
| 27 | Pre-thermal sleeve Ra104 | 3×Φ168×9，L60×4，335m 2, outer Φ 510 * 10 | 3 |
| 28 | Pre-thermal sleeve Ra105 | 3×Φ168×9，L60×4，335m 2, outer Φ 510 * 12 | 3 |
| 29 | Pre-thermal sleeve Ra106 | 3×Φ168×9，L60×4，335m 2, outer Φ 510 * 12 | 3 |
| Sequence number | Equipment | Specification | Quantity (platform) |
| 30 | Pre-thermal sleeve Ra107 | 3×Φ168×9，L60×4，335m 2, outer Φ 510 * 12 | 3 |
| 31 | Pre-thermal sleeve Ra108 | 3×Φ168×9，L60×4，335m 2, outer Φ 510 * 12 | 3 |
| 32 | Pre-thermal sleeve Ra109 | 3×Φ168×9，L60×4，335m 2, outer Φ 510 * 12 | 3 |
| 33 | Pre-thermal sleeve Ra110 | 3×Φ168×9，L60×4，335m 2, outer Φ 510 * 12 | 3 |
| 34 | Heating muff Ra111 | 3×Φ168×9，L60×12，1004m 2, outer Φ 510 * 20 | 3 |
| 35 | Reaction stops sleeve pipe Ra112 | 1×Φ477×20，L＝560m | 3 |
| 36 | Condensed water flash groove Nt111-112 | Φ4000×11700 0.6Mpa | 2 |
| 37 | Sump Ts101-104 | Φ3000×3000 | 4 |
| 38 | Sump pump Ps101-104 | Q＝100m 3/h H＝25m | 4 |
| 39 | Dilution trap Tt101 | Φ5000×8000 | 1 |
| 40 | Dilution pit Tt102-104 | Φ 12500 * 20000, agitator motor power 75kw | 3 |
| 41 | Water cooler Nc101 | Φ2400×7500 | 1 |
Embodiment 2
Present embodiment specifically describes the unit arrangement of the aluminum oxide pipeline dissolving device that technical solutions of the utility model provided.
As shown in Figure 2, described casing bit is arranged on the steel construction of 1.5 meters of 6 interlamellar spacings, 1.5 meters of tube spacing, the one half bend with 273 * 12 millimeters of Φ between the pipe links to each other, and the slip flash drum is arranged in the admission end of described casing bit, make steam flow the shortest, for reducing the resistance to flow of slip between the flash drum, the flash drum ladder arranges that Nt101 is minimum, Nt110 is the highest, and each step differs 300 millimeters; Condensation water pot and condensed water flash groove are arranged in telescopic one side; The secondary vapour of every slip flash drum enters 3 groups of telescopic respective stages respectively by 3 segregaion valves and 3 pipelines; Every group of telescopic water of condensation enters corresponding condensation water pot by 3 segregaion valves and 3 pipelines respectively; On the pipeline before surge pump outlet and the feed slurry flash drum slurry valve is installed, in order to isolate; In Ra106,111,112 outlets baiting valve and pipeline are installed respectively, in order to isolate blowing; Water of condensation, dilution slip use pumping toward other operation.
Embodiment 3
As shown in Figure 3, present embodiment specifically describes the concrete workflow of the aluminum oxide pipeline dissolving device that technical solutions of the utility model provided.
Described workflow comprises the steps:
Step 1: bauxite slurry is conveyed in the cannula system disclosed in the utility model by surge pump, pipe is carried slip in the sleeve pipe group that described cannula system comprised, outer tube is walked steam, the secondary steam that utilizes live steam and flash system and condensate system to return progressively heats up to the slip in the cannula system and heats, and stops in the pipe in the reaction that reaches 560 meters and keeps 280 ℃ temperature of reaction all the time;
Step 2: after 10-15 minute quick stripping reaction, slip imports the flash drum system by cannula system, reduce pressure step by step, lower the temperature, the secondary vapour heat that discharges in this process is led return pipe road system through flash drum and is cooperated live steam to continue slip is carried out preheating;
Step 3: after the progressively decompression cooling of slip through the flash drum system, when reaching 120 ℃, enter the dilution trap system;
Step 4: every grade of preheating telescopic water of condensation enters the corresponding condensation water pot of condensate system, and the secondary vapour of time condensation water pots at different levels turns back to the pre-thermal sleeve of corresponding low first class pressure level again.Toward other operation, secondary vapour enters pre-thermal sleeve of raw pulp or the pre-thermal sleeve of stoste to the water of condensation of last step condensation water pot with pumping.
In sum, the pure canalization production line that the stripping temperature that can handle Chinese diaspore bauxite of assembling according to technical solutions of the utility model is 280 ℃, the maximum feed amount reaches 950-1000m
3/ h is maximum so far canalization dissolving out apparatus, and it possesses following some feature:
(1) its core technology is: slip preheating, heating, reaction stop and realize in pipeline fully, corresponding raw pulp desiliconization heating muff of the secondary steam of the tenth flash drum and stoste heating muff, the 9th corresponding step by step first to nine grade of pre-thermal sleeve of secondary steam to primary flash tank, utilize slip flash distillation secondary vapour heating slip, ore pulp after the preheating enters and enters reaction stop pipe after the live steam heating muff is heated to 280 ℃ with live steam again, adopts autoclave to react the process program of stop even slip preheating in the traditional technology thereby replaced fully.The improvement of this technical scheme can be saved at least 3,000 ten thousand yuan investment, and accordingly can dissolving-out process in reduce about 5.7kwh/t-Al
2O
3Power consumption, and further saved repair and maintenance expense to autoclave;
(2) heat transfer coefficient of technical solutions of the utility model middle sleeve interchanger is more than 2 times of the autoclave heating tube bundle coefficient of heat transfer, therefore can save steam consumption, makes steam mono-consumption be reduced to 1.65t/t-Al
2O
3Below;
(3) provide 10-15 minute reaction time because employing reaches the pipeline of 560m, and guarantee to keep 280 ℃ temperature of reaction in the pipeline, thereby can realize quick stripping reaction;
(4) form by three group's sleeve pipes in view of the stripping pipe production line that is proposed in the technical scheme, make organization of production more flexible, can be with the online isolation cleaning of a certain group that reaches the cycle of operation, dispense with parking has improved operation factor; Adopt a large amount of standard pipe fittings in addition, maintenance is become be more prone to;
(5) owing to there is not pulse buffer, year is saved about 2,300,000 yuan of the electricity charge when reducing by 7,000,000 yuan of investments;
In sum, the gross investment of the aluminum oxide pipeline dissolving device that technical solutions of the utility model provided can be controlled at below 1.4 hundred million, and possess wall scroll production line production capacity and reach ten thousand tons/year of 75-80, especially when ore A/S be higher than 7.5 and operation factor bring up to 92% when above, maximum annual capacity can reach to have realized more than 830,000 tons maximizing produces, filled up domestic field of metallurgy and chemical engineering and do not produced the canalization dissolving-out technology device of aluminum oxide more than 700,000 tons and the blank of corresponding techniques thereof per year, thereby the technical development of existing field of metallurgy and chemical engineering has been had far-reaching influence about still there being single line.
The above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvement and distortion, these improvement and distortion also should be considered as protection domain of the present utility model.
Claims (5)
1. an aluminum oxide pipeline dissolving device is characterized in that, described device comprises cannula system, condensate system, flash drum system, dilution trap system and surge pump;
Described surge pump connects described cannula system;
Described cannula system is connected with described flash drum system and condensate system;
Described flash drum system is connected with described dilution trap system.
2. aluminum oxide pipeline dissolving device as claimed in claim 1, it is characterized in that, described cannula system comprises three group's sleeve pipes, and the described sleeve pipe of every group is mainly stopped pipe and connected to form successively by one-level raw pulp heating muff, one-level stoste heating muff, nine grades of pre-thermal sleeves, one-level live steam heating muff and first order reactions.
3. aluminum oxide pipeline dissolving device as claimed in claim 2 is characterized in that, described raw pulp heating muff model is 3 * Ф 168 * 7, long 240m;
Described stoste heating muff model is 3 * Ф 168 * 7, long 240m;
Described preheating sleeve pipe model is 3 * Ф 168 * 9, long 240m;
Described live steam heating muff model is 3 * Ф 168 * 9, long 720m;
It number is Φ 477 * 20 that described reaction stops cast, length overall 560m.
4. aluminum oxide pipeline dissolving device as claimed in claim 2 is characterized in that, the shared cover flash drum system of described three group's cannula systems, and described flash drum system comprises ten flash drums;
Described ten flash drums are connected successively, and wherein first flash drum and described reaction stop pipe coupling, and the tenth flash drum is connected with described dilution trap, and the secondary steam output tube of described ten flash drums is connected with described three group's telescopic corresponding pressure levels respectively;
Described ten flash drums are pressed ladder and are arranged that the described ten flash drum is minimum, and described first flash drum is the highest, adjacent between bench height differ 300mm.
5. aluminum oxide pipeline dissolving device as claimed in claim 1 is characterized in that described surge pump specification is selected flow Q=380m for use
3/ h, pressure are 9.0Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200021306U CN201634445U (en) | 2010-01-12 | 2010-01-12 | Alumina tube digestion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200021306U CN201634445U (en) | 2010-01-12 | 2010-01-12 | Alumina tube digestion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201634445U true CN201634445U (en) | 2010-11-17 |
Family
ID=43078933
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200021306U Expired - Lifetime CN201634445U (en) | 2010-01-12 | 2010-01-12 | Alumina tube digestion device |
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| Country | Link |
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| CN (1) | CN201634445U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225779A (en) * | 2011-05-11 | 2011-10-26 | 三门峡巨新冶金技术有限公司 | High-pressure dissolution system and method for bauxite |
-
2010
- 2010-01-12 CN CN2010200021306U patent/CN201634445U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225779A (en) * | 2011-05-11 | 2011-10-26 | 三门峡巨新冶金技术有限公司 | High-pressure dissolution system and method for bauxite |
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Granted publication date: 20101117 |
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