CN202543286U - Vacuum-negative pressure controllable flow gold melting system in process of gold purification - Google Patents
Vacuum-negative pressure controllable flow gold melting system in process of gold purification Download PDFInfo
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- CN202543286U CN202543286U CN2012201571995U CN201220157199U CN202543286U CN 202543286 U CN202543286 U CN 202543286U CN 2012201571995 U CN2012201571995 U CN 2012201571995U CN 201220157199 U CN201220157199 U CN 201220157199U CN 202543286 U CN202543286 U CN 202543286U
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- reaction kettle
- absorption bottle
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- kettle
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Abstract
The utility model relates to a vacuum-negative pressure controllable flow gold melting system in the process of gold purification, which comprises the following parts: a double-layered glass reaction kettle, an airtight five-holed kettle cover, a variable-frequency agitator, a temperature display system, an acid condensation and reclaiming pipe, a flow-controllable peristaltic pump, a circulating heating system, an acid-absorbing bottle, a primary alkali-absorbing bottle, a secondary alkali-absorbing bottle, and a water-circulating vacuum pump; the double-layered glass reaction kettle is tightly connected with the closed five-holed kettle cover, and the reaction kettle body is connected with the variable-frequency agitator, the temperature display system, the acid condensation and reclaiming pipe and the flow-controllable peristaltic pump through the airtight five-holed kettle cover; the circulating heating system is connected with the double-layered glass reaction kettle; the acid-absorbing bottle is connected with the primary alkali-absorbing bottle and the secondary alkali-absorbing bottle, and the whole set of vacuum system is connected with the water-circulating vacuum pump. In the process of gold melting, the peristaltic pump flow control method is adopted to add gold-melting reagent, so that the reaction speed can be controlled; since the double-layered glass reaction kettle is adopted, water and oil in the interlayer are circulated for heating, and the heating temperature can be accurately controlled, and is more uniform. The system has the characteristics of safety, environment protection, high speed, low reagent consumption and the like during gold melting.
Description
Technical field
The utility model relates to a kind of environmental protection, quick, safe golden dissolution equipment, particularly relates to the negative pressure of vacuum-controlled stream gold dissolver in a kind of gold purification process.
Background technology
The method of gold purification is a lot, wherein mainly comprises pyrogenic process oxidation refining, chlorination refining method, electrolytic refining process, chemical refining method, solvent refined method etc., and these technique almost all will promptly make the gold dissolving with chemical reagent with part or all of gold solutionization.For example: the electrolytic solution preparation in electrolytic process early stage need be prepared into certain density chlorauric acid solution after with aqua regia dissolution with proof gold; Equally, chemical refining method, solvent extration etc. also need with proof gold (need purify gold) fully dissolving further purify again after becoming solution.
Present golden dissolved method mainly comprises: chloroazotic acid method, liquid chlorine method and chlorination etc., the dissolved technology comprises that dissolving of reaction kettle enclosed system or normal pressure open wide the system dissolving usually.Owing to need use a large amount of chemical reagent in the dissolution process, can cause serious pollution to environment.At present, the most frequently used golden dissolving method is the chloroazotic acid method, in dissolution process, will add a large amount of hydrochloric acid (HCl) and nitric acid (HNO
3), hydrogenchloride (HCl), nitrogen protoxide (NO) and nitrogen peroxide (NO are in large quantities arranged in the waste gas
2) pollution gas.If the system of opening wide is decomposed sample, then these pollution gas will disperse in air; If with closed reaction kettle dissolving, though can not overflow at these pollution gas of decomposed sample stage, in the discharging stage, these accumulate in gas in the reaction kettle and can concentrate and gush the environment around the severe contamination.
Summary of the invention
In order to overcome the deficiency that exists in the existing gold refining process, the utility model provides a kind of negative pressure of vacuum-controlled stream gold dissolver.
The technical solution that the utility model is taked is following: borosilicate glass double-layer glass reaction kettle (2), hydronics (3), closed five hole kettle covers (4), temperature display system (5), acid condensation TFL (6), sour absorption bottle (7), one-level alkali absorption bottle (8), secondary alkali absorption bottle (9), water follow vacuum pump (10), entire system support (11) and controlled stream peristaltic pump (12); High-boron-silicon glass double-layer glass reaction kettle (2) closely is connected with closed five hole kettle covers (4); Frequency conversion stirrer (1) is connected to reaction kettle body through closed five hole kettle covers (4), is fixed in entire system support (11); Hydronics (3) is connected with high-boron-silicon glass double-layer glass reaction kettle (2); Temperature display system (5), acid condensation TFL (6) are connected to high-boron-silicon glass double-layer glass reaction kettle (2) through closed five hole kettle covers (4) respectively; Acid condensation TFL (6) is connected with sour absorption bottle (7) and is fixed in entire system support (11); Acid absorption bottle (7) is connected with one-level alkali absorption bottle (8), secondary alkali absorption bottle (9) in order, and high-boron-silicon glass double-layer glass reaction kettle (2), sour absorption bottle (7), one-level alkali absorption bottle (8), secondary alkali absorption bottle (9) are connected in water successively and follow vacuum pump (10); Controlled stream peristaltic pump (12) is connected to high-boron-silicon glass double-layer glass reaction kettle (2) through closed five hole kettle covers (4).
Reagent drips through controlled stream peristaltic pump (12) continuously, rate of addition 5-100mlmin
-1Adjustable.
High-boron-silicon glass double-layer glass reaction kettle (2) is double-deck, and it is connected with hydronics (3), takes the water cycle heating when Heating temperature is 20-98 ℃, takes oil circulation heating when Heating temperature is 98-299 ℃.
In golden dissolution process, adopt peristaltic pump control stream mode to add and dissolve gold reagent, make speed of response controlled, avoided because the environmental pollution that a large amount of acid gas disperses that abnormal reaction acutely causes cause; Adopt double-layer glass reaction kettle, through the oil circulation heating of middle water, Heating temperature can accurately be controlled and be more even.In addition; In dissolution process, select for use water to follow vacuum pump constantly with the directed extraction of volatility waste gas such as the nitrogen protoxide in the reaction kettle, nitrogen peroxide and hydrogenchloride; After injecting dioxygen oxidation, absorb through the absorption of one-level water, two, three grades of alkali lye, volatility waste gas is reclaimed fully.Characteristics such as this device dissolving gold has safety, environmental protection, speed is fast, the reagent consumption is little.
Description of drawings:
Fig. 1 is the structural representation of the utility model.
Fig. 2 is five holes reaction kettle cover and controlled stream peristaltic pump syndeton synoptic diagram.
Embodiment:
Negative pressure of vacuum in a kind of gold purification process-controlled stream gold dissolver comprises: frequency conversion stirrer 1, high-boron-silicon glass double-layer glass reaction kettle 2, hydronics 3, closed five hole kettle covers 4, temperature display system 5, acid condensation TFL 6, sour absorption bottle 7, one-level alkali absorption bottle 8, secondary alkali absorption bottle 9, water follow vacuum pump 10, entire system support 11 and controlled stream peristaltic pump 12.Wherein: frequency conversion stirrer 1, adopt variable-frequence governor control rotating speed, solution is fully stirred, improve speed of response and take place with protection bumping phenomenon; But the variable-frequence governor non-stop run, it is adjustable that rotating speed minute 0-900 changes stepless change.Double-layer glass reaction kettle body portion 2: the double-layer glass reaction kettle interlayer can provide does pyroreaction, and top temperature can reach 300 ℃.Adopt the production of GG17 high-boron-silicon glass, good chemistry, physicals are arranged; Bottom glass requires to be 7mm.Logical deep fat of glass sandwich interface or hot water circulation can be accomplished the precise temperature control heating in the liquid making process; Hydronics 3: adopt the heating of interlayer entire body, Heating temperature can accurately be controlled, heated perimeter 0-300 ℃.Wherein: 0-100 ℃ of needs water cycle heating, 0-300 ℃ of needs dimethyl silicone oil heating, temperature raising is rapid.Closed five hole kettle covers 4: wherein: No. 1 mouth 401, big mouthful of design is convenient to add solid particulate type material; No. 2 mouths 402 insert TP, accurately the temperature in the assaying reaction still; No. 3 mouths 403: gather tetrafluoro covering agitator arm inlet; No. 4 mouths 404: the directed export mouth of spent acid gas; No. 5 mouths 405: controlled stream peristaltic pump 12 drips reagent; Temperature display system 5: reaction kettle body temperature directly perceived ,-50 ℃～300 ℃; The snakelike acid condensation TFL 6 of GG17: the distillation condensation, concentrating return-flow, on be with oxygen to feed mouthful; Acid absorption bottle 7: reclaim the acid gas that flows out, reduce discharging, and can be recycled; One-level alkali absorption bottle 8: interior dress 20%m/v sodium hydroxide solution absorbs and is not absorbed acid gas fully by sour absorption bottle 7; Secondary alkali absorption bottle 9: interior dress 20%m/v sodium hydroxide solution does not absorb and is absorbed acid gas completely by sour absorption bottle 7 with one-level alkali absorption bottle 8; Tetrafluoro water follows vacuum pump 10: interface and pipeline are all made with tetrafluoroethylene, and antiacid gas corrosion ability is strong; Reaction kettle body and assembly titanium entire system support 11: any part metals that leaks outside is a titanium metal, prevents corrosion contamination, has also avoided simultaneously electrolytic solution to prepare in the process exogenous pollution to gold.
High-boron-silicon glass double-layer glass reaction kettle 2 closely is connected with closed five hole kettle covers 4, and frequency conversion stirrer 1 is connected to reaction kettle body through closed five hole kettle covers 4, is fixed in entire system support 11; Hydronics 3 is connected with high-boron-silicon glass double-layer glass reaction kettle 2; Temperature display system 5, acid condensation TFL 6 are connected to high-boron-silicon glass double-layer glass reaction kettle 2 through closed five hole kettle covers 4 respectively; Acid condensation TFL 6 is connected with sour absorption bottle 7 and is fixed in entire system support 11; Acid absorption bottle 7 is connected with one-level alkali absorption bottle 8, secondary alkali absorption bottle 9 in order, and high-boron-silicon glass double-layer glass reaction kettle 2, sour absorption bottle 7, one-level alkali absorption bottle 8, secondary alkali absorption bottle 9 are connected in water successively and follow vacuum pump 10; Controlled stream peristaltic pump 12 is connected to high-boron-silicon glass double-layer glass reaction kettle 2 through closed five hole kettle covers 4.
No. 5 mouths 405 through reaction kettle closed five hole kettle covers 4 add 6molL
-1Hydrochloric acid HCl, the amount of adding is 3.8 with the ratio of the amount of dissolved gold: 1v/m, promptly dissolve 1 kilogram of gold and add 3.8L 6molL
-1HCl.Then with the bronze after the efflorescence or ironed, cut No. 1 mouth 401 of little gold plaque through reaction kettle closed five hole kettle covers 4 and add in the kettlies, with No. 1 mouth 401 of tetrafluoroethylene lid sealing closed five hole kettle covers 4.Start hydronics 3, temperature is adjusted to about 98 ℃; Opening tetrafluoro water follows vacuum pump 10 and bleeds and make the kettle internal pressure about 70KPa.Open frequency conversion stirrer 1 slow shape stirring velocity under low-speed conditions and open external water source as the prolong water coolant less than 100rpm.No. 5 mouths 405 through reaction kettle kettle cover 4 slowly drip nitric acid, and rate of addition is controlled at 20mlmin
-1About; Behind the 20-30min, react the comparison that begins to become and acutely and in the reaction kettle be full of brown gas, reduce HNO
3Rate of addition is controlled at 10ml min
-1About, and accelerate stirring velocity.Work as HNO
3The adding of add-on and gold will reach 0.38: 1v/m, promptly dissolve 1 kilogram of gold and add 0.38L 14molL
-1HNO
3, after stop to drip HNO
3This moment, the gold in the solution near dissolving fully, further improved stirrer 1 stirring velocity to more than the 200rpm, and further improved tetrafluoro water and follow vacuum pump 10 speed of evacuations and make the kettle internal pressure about 50-60KPa.Further behind the enriching soln 2h, extract this solution out laggard people next step purifying technique.
Claims (3)
1. the negative pressure of vacuum in the gold purification process-controlled stream gold dissolver; Comprise: frequency conversion stirrer (1), high-boron-silicon glass double-layer glass reaction kettle (2), hydronics (3), closed five hole kettle covers (4), temperature display system (5), acid condensation TFL (6), sour absorption bottle (7), one-level alkali absorption bottle (8), secondary alkali absorption bottle (9), water follow vacuum pump (10), entire system support (11) and controlled stream peristaltic pump (12); It is characterized in that: high-boron-silicon glass double-layer glass reaction kettle (2) closely is connected with closed five hole kettle covers (4); Frequency conversion stirrer (1) is connected to reaction kettle body through closed five hole kettle covers (4), is fixed in entire system support (11); Hydronics (3) is connected with high-boron-silicon glass double-layer glass reaction kettle (2); Temperature display system (5), acid condensation TFL (6) are connected to high-boron-silicon glass double-layer glass reaction kettle (2) through closed five hole kettle covers (4) respectively; Acid condensation TFL (6) is connected with sour absorption bottle (7) and is fixed in entire system support (11); Acid absorption bottle (7) is connected with one-level alkali absorption bottle (8), secondary alkali absorption bottle (9) in order, and high-boron-silicon glass double-layer glass reaction kettle (2), sour absorption bottle (7), one-level alkali absorption bottle (8), secondary alkali absorption bottle (9) are connected in water successively and follow vacuum pump (10); Controlled stream peristaltic pump (12) is connected to high-boron-silicon glass double-layer glass reaction kettle (2) through closed five hole kettle covers (4).
2. the negative pressure of vacuum in a kind of gold purification process as claimed in claim 1-controlled stream gold dissolver, it is characterized in that: reagent drips through controlled stream peristaltic pump (12) continuously, rate of addition 5-100mlmin
-1Adjustable.
3. the negative pressure of vacuum in a kind of gold purification process as claimed in claim 1-controlled stream gold dissolver; It is characterized in that: high-boron-silicon glass double-layer glass reaction kettle (2) is for double-deck; It is connected with hydronics (3); Take the water cycle heating when Heating temperature is 20-98 ℃, take oil circulation heating when Heating temperature is 98-299 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201571995U CN202543286U (en) | 2012-04-13 | 2012-04-13 | Vacuum-negative pressure controllable flow gold melting system in process of gold purification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201571995U CN202543286U (en) | 2012-04-13 | 2012-04-13 | Vacuum-negative pressure controllable flow gold melting system in process of gold purification |
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| Publication Number | Publication Date |
|---|---|
| CN202543286U true CN202543286U (en) | 2012-11-21 |
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|---|---|---|---|
| CN2012201571995U Expired - Lifetime CN202543286U (en) | 2012-04-13 | 2012-04-13 | Vacuum-negative pressure controllable flow gold melting system in process of gold purification |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108642301A (en) * | 2018-06-05 | 2018-10-12 | 山东梦金园珠宝首饰有限公司 | A kind of method and device for gold purification |
| CN110238373A (en) * | 2019-07-15 | 2019-09-17 | 西安汇创贵金属新材料研究院有限公司 | A kind of ingot casting system |
-
2012
- 2012-04-13 CN CN2012201571995U patent/CN202543286U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108642301A (en) * | 2018-06-05 | 2018-10-12 | 山东梦金园珠宝首饰有限公司 | A kind of method and device for gold purification |
| CN110238373A (en) * | 2019-07-15 | 2019-09-17 | 西安汇创贵金属新材料研究院有限公司 | A kind of ingot casting system |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121121 |