CN104131160B - The method of the ultrasound-enhanced leaching of a kind of Refractory Au-ores and ultrasound-enhancedly soak golden agitator - Google Patents
The method of the ultrasound-enhanced leaching of a kind of Refractory Au-ores and ultrasound-enhancedly soak golden agitator Download PDFInfo
- Publication number
- CN104131160B CN104131160B CN201410374043.6A CN201410374043A CN104131160B CN 104131160 B CN104131160 B CN 104131160B CN 201410374043 A CN201410374043 A CN 201410374043A CN 104131160 B CN104131160 B CN 104131160B
- Authority
- CN
- China
- Prior art keywords
- ultrasound
- leaching
- enhanced
- pretreatment
- agitator
- 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.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to the method for the ultrasound-enhanced leaching of a kind of Refractory Au-ores and ultrasound-enhancedly soak golden agitator, belonging to technical field of wet metallurgy. First gold mine fragmentation is prepared to ore pulp, then ore pulp is carried out to pretreatment and leaching process, in these two processes, adopt ultrasound-enhanced processing. This is ultrasound-enhanced soaks golden agitator and comprises cell body, charging aperture, discharging opening, stirring structure, ultrasound structure and ventilation device. The method adopts ultrasonic method to carry out intensive treatment to Refractory Au-ores in pretreatment and leaching process, adopts ultrasonic method especially at preprocessing process, has shortened the time of reaction, strengthening leaching effect. This is ultrasound-enhanced soaks golden agitator power transmission shaft and agitator arm departs from cell body center, effectively prevents the phenomenon of turning round and round, and is conducive to the even mixing of solid-liquid-gas three-phase, has improved mass transfer rate.
Description
Technical field
The present invention relates to the method for the ultrasound-enhanced leaching of a kind of Refractory Au-ores and ultrasound-enhancedly soak golden agitator, belonging to technical field of wet metallurgy.
Background technology
Gold is because its good performance is also widely applied in modern high technology industry, as technical fields such as electronics, communication, aerospace, chemical industry, medical treatment. Along with the continuous increase of gold mine mining mineral resource amount, it is day by day exhausted that high-grade is easily processed the reserves of gold mine, and Refractory Au-ores will become the valuable source of gold industry from now on. How effectively also the exploitation Refractory Au-ores of continuation, is China's gold industry technical barrier in the urgent need to address.
Verified in gold geology reserves in China, approximately had 1000t left and right to belong to pyrite/mispickel coated Refractory Au-ores, it is one of main Refractory Au-ores. Golden embedding cloth in this class gold mine is among pyrite and mispickel lattice, and wherein sulphur and the arsenic of high-load is very harmful to Cyanide Leaching; Industrially must carry out pretreatment to it, open golden parcel, remove sulphur and arsenic etc. affects the material of cyaniding simultaneously, effectively Leaching of Gold. At present, the industrial method for pre-oxidizing of having applied has: roasting method, high-pressure oxidation method, biological pre-oxidation method, oxidation method etc., but all there is certain deficiency in these methods. For example, roasting method easily causes burning, forms caking, hinder gold and further leach, and along with the raising of environmental requirement, waste gas pollution control and treatment cost improves, and its range of application is restricted; High-pressure oxidation method operates under HTHP, and equipment material requires high, and investment cost is large, and to undesirable containing the higher material treatment effect of organic carbon; The available bacterial classification of bacterial oxidation method is limited, and reaction time is long, ensure that bacteria live and breeding make reaction condition comparatively harsh. Recent decades, along with scientific worker's continuous research, successively there is nitric acid catalytic oxidation, chloridising and the method that adopts the chemical substances such as peroxide, permanganate, potassium bichromate, perchlorate, hypochlorite, ozone to carry out pre-oxidation in oxidation processing method, but these methods, due to problems such as equipment, operation or costs, rest on the laboratory research stage substantially.
Although under researchers' long-term endeavour, cyanide gold-leaching technology is own through having obtained significant progress. Along with peroxide reagent helps the appearance of the technology of soaking, the development of technology for gold extraction has been pushed to a climax. Under the effect of the peroxide reagent that is representative at hydrogen peroxide, leaching rate and even the leaching rate of gold are all significantly improved, and soak gold and the time significantly shorten. But, continue on this basis development and just seem more difficult. Soak golden speed and seem to have reached certain limit, be difficult to substantial further raising. Therefore,, when what technology for gold extraction developed reaches this climax stage, entered again " bottleneck " stage. In this case, continue to improve and soak golden speed, need a kind of new breakthrough, and the fundamental way that realizes new breakthrough to be exactly intrinsic propesties from soaking golden process seek new thinking. Therefore, how intense cyaniding extraction of gold process, enhances productivity, thereby reaches the reduction scale of capital construction, saves investment, reduces production costs, and has become key subjects of current gold research work.
Summary of the invention
The problem and the deficiency that exist for above-mentioned prior art, the invention provides the method for the ultrasound-enhanced leaching of a kind of Refractory Au-ores and ultrasound-enhancedly soak golden agitator. The method adopts ultrasonic method to carry out intensive treatment to Refractory Au-ores in pretreatment and leaching process, adopts ultrasonic method especially at preprocessing process, has shortened the time of reaction, strengthening leaching effect. This is ultrasound-enhanced soaks golden agitator power transmission shaft and agitator arm departs from cell body center, effectively prevents the phenomenon of turning round and round, and is conducive to the even mixing of solid-liquid-gas three-phase, has improved mass transfer rate, and the present invention is achieved through the following technical solutions.
A method for the ultrasound-enhanced leaching of Refractory Au-ores, its concrete steps are as follows:
Step 1, prepare ore pulp: first gold mine being crushed to granularity is that 200 orders obtain breeze below, then breeze, NaOH and water is fully mixed to get to ore pulp;
Step 2, preprocessing process: the ore pulp first step 1 being obtained passes into the air that flow is 50～300L/h are 20～40kHz, the sound intensity 0.5～4.0W/cm in room temperature, ultrasonic frequency3, intermittently use intensified by ultrasonic wave pretreatment 0.5～10h under ultrasonic condition to obtain pretreatment gold mine, in preprocessing process, press every half an hourAmount add hydrogen peroxide until pretreatment finishes;
Step 3, leaching process: after the pretreatment gold mine first step 2 being obtained and water, Cymag mixing and stirring, passing into the air that flow is 50～300L/h, is 20～40kHz, the sound intensity 0.5～4.0W/cm in room temperature, ultrasonic frequency3, intermittently use under ultrasonic condition intensified by ultrasonic wave to leach 0.5～10h to obtain soaking slag and your liquid, press every half an hour leaching in journeyAmount add hydrogen peroxide until leach finish.
In the ore pulp that described step 1 prepares, water and powdered ore quality ratio are 1～5:1, and sodium hydroxide concentration is gold mine quality 1～20%, and NaOH is commercially available caustic soda or technical grade caustic soda.
In described step 3, the addition of Cymag is。
The mixing speed of the leaching process in preprocessing process and step 3 in above-mentioned steps 2 is 200～800rpm.
A kind of ultrasound-enhanced golden agitator that soaks, comprise cell body 9, charging aperture 11, discharging opening 12, stirring structure, ultrasound structure and ventilation device, described stirring structure comprises agitator arm 1, power transmission shaft 3 and motor 4, ultrasound structure comprises ultrasonic transducer 2, wire 6, supersonic generator 7 and circulator 8, ventilation device comprises blow vent 5 and gas outlet 10, described cell body 9 departs from cell body center the power transmission shaft 3 passing from cell body 9 tops is set, power transmission shaft 3 bottoms are provided with agitator arm 1, power transmission shaft 3 upper ends connect motor 4, the ultrasonic transducer 2 that is hollow cylindrical is installed on power transmission shaft 3, ultrasonic transducer 2 is connected with supersonic generator 7 by wire 6, wire 6 is provided with circulator 8 and this circulator 8 is connected with power transmission shaft 3 tops, power transmission shaft 3 is provided with blow vent 5 for hollow shape top end face, power transmission shaft 3 bottom end faces are provided with gas outlet 10.
Described cell body 9 top end face one sides are provided with charging aperture 11, and cell body 9 bottom one sides are provided with discharging opening 12.
This ultrasound-enhanced using method of soaking golden agitator: in the time connecting motor 4, motor 4 drives agitator arm 1 rotation of high speed along clockwise direction by power transmission shaft 3. Ventilate to the blow vent 5 on power transmission shaft 3 tops, gas is gone out by the gas outlet 10 of power transmission shaft 3 bottoms simultaneously, and the ore pulp in agitator can form gas-liquid-solid three-phase admixture under the state stirring; Ore pulp in mixer, under the air passing into and the strong stirring action of impeller 1, forms powerful eddy current and rotatablely moves. Because power transmission shaft 3 departs from cell body center, effectively prevent the phenomenon of turning round and round, being conducive to gas-liquid-solid three-phase mixes, make like this increase of diffusion, accelerate to a certain extent to soak golden speed, meanwhile, the electrical power that supersonic generator 7 produces is transferred to ultrasonic transducer 2 by wire 6, then ultrasonic transducer 2 is that acoustic energy is launched ultrasonic wave to the ore pulp in agitator 9 by electric energy conversion, and ultrasonic wave produces cavitation phenomenon in ore pulp. In the time that cavitation bubble collapses, within the utmost point short time and in space minimum around cavitation bubble, produce high temperature and about 5 × 10 more than 5000K7The high pressure of Pa, rate of temperature change is up to 109K/s, and produce strong shock wave and (or) speed per hour and reach the jet of 400Km, due to strong impact force and jet impulse goldc grains that ore pulp forms under cavitation and acoustic pressure effect, therefore goldc grains surface is difficult to form passivation layer. Jet produces strong stirring action to ore pulp again, accelerates and promoted the dissolving of goldc grains. Passing into air to leaching ore pulp solution both can provide the oxygen of leaching process needs also to ensure the continuous and effective of ultrasonic cavitation. In sum, due to agitator arm 1 and pass into strong agitation effect and hyperacoustic cavitation of air, solve to a great extent the problem that produces passivation layer in the time soaking gold, realize and accelerated golden leaching velocity, improve golden leaching rate, shorten the object of extraction time.
The invention has the beneficial effects as follows: (1) the present invention adds hydrogen peroxide in breeze, NaOH and water fully mix the ore pulp of gained, utilize the synergy of hydrogen peroxide and NaOH, carry out redox reaction, its reaction temperature is lower, and can carry out at normal temperatures and pressures, both can save the energy, reduce again the material requirement to equipment, thereby can reduce investment, and easy to operate; Hydrogen peroxide and NaOH synergistic oxidation are considerably beyond the two independent oxidation effectiveness; (2) the method employing is ultrasound-enhanced on the basis of Reaction time shorten (extraction time is 0.5～10h, and the time of traditional cyanide gold-leaching is at 20～24h), has improved pretreatment and leaching effect to gold ore; (3) gold ore pretreatment and leach the phenomenon greatly strengthened under ultrasonication, likely makes ultrasound-enhancedly at gold industry, and those are of high grade especially, and reserves are little, and first the mine that is not suitable for building traditional cyanide plant adopts; (4) power transmission shaft of this agitator and agitator arm depart from cell body center, effectively prevent the phenomenon of turning round and round, and are conducive to the even mixing of solid-liquid-gas three-phase, have improved mass transfer rate; (5) power transmission shaft of this agitator is designed to hollow, and there is breather pipe on top, and there is escape pipe lower end, and ventilation effect directly occurs in power transmission shaft, has accelerated the Gas Stirring effect of ore pulp, has saved the device space simultaneously; (6) this agitator ultrasonic transducer is hollow cylindrical, can directly be enclosed within on power transmission shaft, can increase or reduce ultrasonic transducer quantity according to required ultrasonic power, ultrasonic transducer dismounting, easy for installation; (7) this agitator means is simple in structure, stable.
Brief description of the drawings
Fig. 1 is process chart of the present invention;
To be that the present invention is ultrasound-enhanced soak golden agitator structure schematic diagram to Fig. 2.
In figure: 1-agitator arm, 2-ultrasonic transducer, 3-power transmission shaft, 4-motor, 5-blow vent, 6-wire, 7-supersonic generator, 8-circulator, 9-cell body, 10-gas outlet, 11-charging aperture, 12-discharging opening.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Embodiment 1
Certain Refractory Au-ores, gold grade 3.23g/t, the leaching rate that directly conventional cyanidation extract technology obtains is 12.7%. First granularity is less than to 200 object 400g gold mine breezes and 600ml water and is mixed in 1L beaker, then add 20g NaOH; Open mechanical agitation and to adjust mixing speed be 500 revs/min, pass into air capacity is 120L/ hour, stir after open frequency 20.0kHz and power 2kW, sound intensity 3.3W/cm3Vltrasonic device carries out ultrasound-enhanced pretreatment, and the ultrasonic pretreated cycle is that ultrasonic pretreatment stops 1 minute in 5 minutes, adds 1ml hydrogen peroxide in ultrasonic preprocessing process every half an hour; Process filtration washing dry for standby after 3 hours. Get the sample ore 150g of naoh treatment, add 600ml water, 1g calcium oxide and 1.8g Cymag, gas flow is 180L/h, mixing speed 500r/min, and with frequency 28.2kHz, power 180W, sound intensity 0.3W/cm3Vltrasonic device carry out the leaching of ultrasound-enhanced gold, strengthening added 1ml hydrogen peroxide in leaching process every 1 hour, strengthening was leached after 5 hours, suction filtration also washs residue, residue dry after with the residual gold of atomic absorption detecting. Golden leaching rate 84.7% is learnt in calculating.
For same Refractory Au-ores, in preprocessing process, cancel ultrasound-enhanced processing procedure, but the reagent that other pretreatment add with leaching process, amount of reagent, Parameter Conditions are identical with above-mentioned condition, final calculating learnt golden leaching rate 19.6%.
For same Refractory Au-ores, in leaching process, cancel ultrasound-enhanced processing procedure, but the reagent that other pretreatment add with leaching process, amount of reagent, Parameter Conditions are identical with above-mentioned condition, final calculating learnt golden leaching rate 44.3%.
This is ultrasound-enhanced soaks golden agitator, comprise cell body 9, charging aperture 11, discharging opening 12, stirring structure, ultrasound structure and ventilation device, described stirring structure comprises agitator arm 1, power transmission shaft 3 and motor 4, ultrasound structure comprises ultrasonic transducer 2, wire 6, supersonic generator 7 and circulator 8, ventilation device comprises blow vent 5 and gas outlet 10, described cell body 9 departs from cell body center the power transmission shaft 3 passing from cell body 9 tops is set, power transmission shaft 3 bottoms are provided with agitator arm 1, power transmission shaft 3 upper ends connect motor 4, the ultrasonic transducer 2 that is hollow cylindrical is installed on power transmission shaft 3, ultrasonic transducer 2 is connected with supersonic generator 7 by wire 6, wire 6 is provided with circulator 8 and this circulator 8 is connected with power transmission shaft 3 tops, power transmission shaft 3 is provided with blow vent 5 for hollow shape top end face, power transmission shaft 3 bottom end faces are provided with gas outlet 10.
Wherein cell body 9 top end face one sides are provided with charging aperture 11, and cell body 9 bottom one sides are provided with discharging opening 12.
Embodiment 2
Certain Refractory Au-ores, gold grade 3.23g/t, the leaching rate that directly conventional cyanidation extract technology obtains is 12.7%. First granularity is less than to 200 object gold mine breeze 400g and 600ml water and is mixed in 1L beaker, then add 60g NaOH; Opening mechanical agitation and adjusting mixing speed is 500 revs/min, and passing into air capacity is 180L/ hour, open frequency 20.0kHz, power 2kW, sound intensity 3.3W/cm after stirring3Vltrasonic device carry out ultrasound-enhanced pretreatment, the ultrasonic pretreated cycle is that ultrasonic pretreatment stops 1 minute in 5 minutes, adds 1ml hydrogen peroxide in ultrasonic preprocessing process every half an hour, processes filtration washing dry for standby after 1 hour; Get the sample ore 150g of naoh treatment, add 600ml water, 1g calcium oxide and 1.8g Cymag, gas flow is 180L/h, mixing speed 500r/min, and with frequency 28.2kHz, power 180W, sound intensity 0.3W/cm3Vltrasonic device carry out the leaching of ultrasound-enhanced gold, strengthening added 1ml hydrogen peroxide in leaching process every 1 hour, strengthening was leached after 5 hours, suction filtration also washs residue, residue dry after with the residual gold of atomic absorption detecting. Golden leaching rate 82.7% is learnt in calculating.
For same Refractory Au-ores, in preprocessing process, cancel ultrasound-enhanced processing procedure, but the reagent that other pretreatment add with leaching process, amount of reagent, Parameter Conditions are identical with above-mentioned condition, final calculating learnt golden leaching rate 17.8%.
For same Refractory Au-ores, in leaching process, cancel ultrasound-enhanced processing procedure, but the reagent that other pretreatment add with leaching process, amount of reagent, Parameter Conditions are identical with above-mentioned condition, final calculating learnt golden leaching rate 39.8%.
This is ultrasound-enhanced soaks golden agitator, comprise cell body 9, charging aperture 11, discharging opening 12, stirring structure, ultrasound structure and ventilation device, described stirring structure comprises agitator arm 1, power transmission shaft 3 and motor 4, ultrasound structure comprises ultrasonic transducer 2, wire 6, supersonic generator 7 and circulator 8, ventilation device comprises blow vent 5 and gas outlet 10, described cell body 9 departs from cell body center the power transmission shaft 3 passing from cell body 9 tops is set, power transmission shaft 3 bottoms are provided with agitator arm 1, power transmission shaft 3 upper ends connect motor 4, the ultrasonic transducer 2 that is hollow cylindrical is installed on power transmission shaft 3, ultrasonic transducer 2 is connected with supersonic generator 7 by wire 6, wire 6 is provided with circulator 8 and this circulator 8 is connected with power transmission shaft 3 tops, power transmission shaft 3 is provided with blow vent 5 for hollow shape top end face, power transmission shaft 3 bottom end faces are provided with gas outlet 10.
Wherein cell body 9 top end face one sides are provided with charging aperture 11, and cell body 9 bottom one sides are provided with discharging opening 12.
Embodiment 3
Certain Refractory Au-ores, gold grade 3.23g/t, the leaching rate that directly conventional cyanidation extract technology obtains is 12.7%. First granularity is less than to 200 object gold mine breeze 400g and 600ml water and is mixed in 1L beaker, then add 60g NaOH; Opening mechanical agitation and adjusting mixing speed is 500 revs/min. Passing into air capacity is 180L/ hour, open frequency 20.0kHz, power 2kW, sound intensity 3.3W/cm after stirring3Vltrasonic device carry out ultrasound-enhanced pretreatment, the ultrasonic pretreated cycle is that ultrasonic pretreatment stops 1 minute in 5 minutes, adds 1ml hydrogen peroxide in ultrasonic preprocessing process every half an hour, processes filtration washing dry for standby after 1 hour; Get the sample ore 150g of naoh treatment, add 600ml water, 1g calcium oxide and 2.7g Cymag, gas flow is 180L/h, mixing speed 500r/min, and with frequency 28.2kHz, power 180W, sound intensity 0.3W/cm3Vltrasonic device carry out the leaching of ultrasound-enhanced gold, strengthening added 1ml hydrogen peroxide in leaching process every 1 hour, strengthening was leached after 5 hours, suction filtration also washs residue, residue dry after with the residual gold of atomic absorption detecting. Golden leaching rate 89.7% is learnt in calculating.
For same Refractory Au-ores, in preprocessing process, cancel ultrasound-enhanced processing procedure, but the reagent that other pretreatment add with leaching process, amount of reagent, Parameter Conditions are identical with above-mentioned condition, final calculating learnt golden leaching rate 21.3%.
For same Refractory Au-ores, in leaching process, cancel ultrasound-enhanced processing procedure, but the reagent that other pretreatment add with leaching process, amount of reagent, Parameter Conditions are identical with above-mentioned condition, final calculating learnt golden leaching rate 47.5%.
This is ultrasound-enhanced soaks golden agitator, comprise cell body 9, charging aperture 11, discharging opening 12, stirring structure, ultrasound structure and ventilation device, described stirring structure comprises agitator arm 1, power transmission shaft 3 and motor 4, ultrasound structure comprises ultrasonic transducer 2, wire 6, supersonic generator 7 and circulator 8, ventilation device comprises blow vent 5 and gas outlet 10, described cell body 9 departs from cell body center the power transmission shaft 3 passing from cell body 9 tops is set, power transmission shaft 3 bottoms are provided with agitator arm 1, power transmission shaft 3 upper ends connect motor 4, the ultrasonic transducer 2 that is hollow cylindrical is installed on power transmission shaft 3, ultrasonic transducer 2 is connected with supersonic generator 7 by wire 6, wire 6 is provided with circulator 8 and this circulator 8 is connected with power transmission shaft 3 tops, power transmission shaft 3 is provided with blow vent 5 for hollow shape top end face, power transmission shaft 3 bottom end faces are provided with gas outlet 10.
Wherein cell body 9 top end face one sides are provided with charging aperture 11, and cell body 9 bottom one sides are provided with discharging opening 12.
Embodiment 4
Certain Refractory Au-ores, gold grade 4.61g/t, the leaching rate that directly conventional cyanidation extract technology obtains is 13.1%. First granularity is less than to 200 object gold mine breeze 400g and 2000ml water and is mixed in 5L beaker, then add 80g NaOH; Opening mechanical agitation and adjusting mixing speed is 200 revs/min. Passing into air capacity is 50L/ hour, open frequency 30.0kHz, power 2kW, sound intensity 1.0W/cm after stirring3Vltrasonic device carry out ultrasound-enhanced pretreatment, the ultrasonic pretreated cycle is that ultrasonic pretreatment stops 1 minute in 5 minutes, adds 1ml hydrogen peroxide in ultrasonic preprocessing process every half an hour, processes filtration washing dry for standby after 0.5 hour; Get the sample ore 150g of naoh treatment, add 600ml water, 1g calcium oxide and 8.0g Cymag, gas flow is 50L/h, mixing speed 200r/min, and with frequency 20kHz, power 180W, sound intensity 0.3W/cm3Vltrasonic device carry out the leaching of ultrasound-enhanced gold, strengthening added 1ml hydrogen peroxide in leaching process every 1 hour, strengthening was leached after 0.5 hour, suction filtration also washs residue, residue dry after with the residual gold of atomic absorption detecting. Golden leaching rate 92.8% is learnt in calculating.
For same Refractory Au-ores, in preprocessing process, cancel ultrasound-enhanced processing procedure, but the reagent that other pretreatment add with leaching process, amount of reagent, Parameter Conditions are identical with above-mentioned condition, final calculating learnt golden leaching rate 24.6%.
For same Refractory Au-ores, in leaching process, cancel ultrasound-enhanced processing procedure, but the reagent that other pretreatment add with leaching process, amount of reagent, Parameter Conditions are identical with above-mentioned condition, final calculating learnt golden leaching rate 49.7%.
This is ultrasound-enhanced soaks golden agitator, comprise cell body 9, charging aperture 11, discharging opening 12, stirring structure, ultrasound structure and ventilation device, described stirring structure comprises agitator arm 1, power transmission shaft 3 and motor 4, ultrasound structure comprises ultrasonic transducer 2, wire 6, supersonic generator 7 and circulator 8, ventilation device comprises blow vent 5 and gas outlet 10, described cell body 9 departs from cell body center the power transmission shaft 3 passing from cell body 9 tops is set, power transmission shaft 3 bottoms are provided with agitator arm 1, power transmission shaft 3 upper ends connect motor 4, the ultrasonic transducer 2 that is hollow cylindrical is installed on power transmission shaft 3, ultrasonic transducer 2 is connected with supersonic generator 7 by wire 6, wire 6 is provided with circulator 8 and this circulator 8 is connected with power transmission shaft 3 tops, power transmission shaft 3 is provided with blow vent 5 for hollow shape top end face, power transmission shaft 3 bottom end faces are provided with gas outlet 10.
Wherein cell body 9 top end face one sides are provided with charging aperture 11, and cell body 9 bottom one sides are provided with discharging opening 12.
Embodiment 5
Certain Refractory Au-ores, gold grade 1.49g/t, the leaching rate that directly conventional cyanidation extract technology obtains is 8.7%. First granularity is less than to 200 object gold mine breeze 400g and 400ml water and is mixed in 1L beaker, then add 20g NaOH; Opening mechanical agitation and adjusting mixing speed is 800 revs/min, and passing into air capacity is 300L/ hour, open frequency 40kHz, power 2kW, sound intensity 5.0W/cm after stirring3Vltrasonic device carry out ultrasound-enhanced pretreatment, the ultrasonic pretreated cycle is that ultrasonic pretreatment stops 1 minute in 5 minutes, adds 1ml hydrogen peroxide in ultrasonic preprocessing process every half an hour, processes filtration washing dry for standby after 10 hours; Get the sample ore 150g of naoh treatment, add 600ml water, 1g calcium oxide and 0.8g Cymag, gas flow is 300L/h, mixing speed 800r/min, and with frequency 40kHz, power 180W, sound intensity 0.3W/cm3Vltrasonic device carry out the leaching of ultrasound-enhanced gold, strengthening added 1ml hydrogen peroxide in leaching process every 1 hour, strengthening was leached after 10 hours, suction filtration also washs residue, residue dry after with the residual gold of atomic absorption detecting. Golden leaching rate 73.2% is learnt in calculating.
For same Refractory Au-ores, in preprocessing process, cancel ultrasound-enhanced processing procedure, but the reagent that other pretreatment add with leaching process, amount of reagent, Parameter Conditions are identical with above-mentioned condition, final calculating learnt golden leaching rate 15.4%.
For same Refractory Au-ores, in leaching process, cancel ultrasound-enhanced processing procedure, but the reagent that other pretreatment add with leaching process, amount of reagent, Parameter Conditions are identical with above-mentioned condition, final calculating learnt golden leaching rate 32.8%.
This is ultrasound-enhanced soaks golden agitator, comprise cell body 9, charging aperture 11, discharging opening 12, stirring structure, ultrasound structure and ventilation device, described stirring structure comprises agitator arm 1, power transmission shaft 3 and motor 4, ultrasound structure comprises ultrasonic transducer 2, wire 6, supersonic generator 7 and circulator 8, ventilation device comprises blow vent 5 and gas outlet 10, described cell body 9 departs from cell body center the power transmission shaft 3 passing from cell body 9 tops is set, power transmission shaft 3 bottoms are provided with agitator arm 1, power transmission shaft 3 upper ends connect motor 4, the ultrasonic transducer 2 that is hollow cylindrical is installed on power transmission shaft 3, ultrasonic transducer 2 is connected with supersonic generator 7 by wire 6, wire 6 is provided with circulator 8 and this circulator 8 is connected with power transmission shaft 3 tops, power transmission shaft 3 is provided with blow vent 5 for hollow shape top end face, power transmission shaft 3 bottom end faces are provided with gas outlet 10.
Wherein cell body 9 top end face one sides are provided with charging aperture 11, and cell body 9 bottom one sides are provided with discharging opening 12.
By reference to the accompanying drawings the specific embodiment of the present invention is explained in detail above, but the present invention is not limited to above-mentioned embodiment, in the ken possessing those of ordinary skill in the art, can also under the prerequisite that does not depart from aim of the present invention, make various variations.
Claims (2)
1. a method for the ultrasound-enhanced leaching of Refractory Au-ores, is characterized in that concrete steps are as follows:
Step 1, prepare ore pulp: first gold mine being crushed to granularity is that 200 orders obtain breeze below, then breeze, NaOH and water is fully mixed to get to ore pulp;
Step 2, preprocessing process: the ore pulp first step 1 being obtained passes into the air that flow is 50～300L/h are 20～40kHz, the sound intensity 0.5～4.0W/cm in room temperature, ultrasonic frequency3, intermittently use intensified by ultrasonic wave pretreatment 0.5～10h under ultrasonic condition to obtain pretreatment gold mine, in preprocessing process, press 2.5L/t every half an hourGold mineAmount add hydrogen peroxide until pretreatment finishes;
Step 3, leaching process: after the pretreatment gold mine first step 2 being obtained and water, Cymag mixing and stirring, passing into the air that flow is 50～300L/h, is 20～40kHz, the sound intensity 0.5～4.0W/cm in room temperature, ultrasonic frequency3, intermittently use under ultrasonic condition intensified by ultrasonic wave to leach 0.5～10h to obtain soaking slag and your liquid, in journey, add hydrogen peroxide every half an hour by the amount of 1～2L/t gold mine until leach and finish leaching;
In the ore pulp that described step 1 prepares, water and powdered ore quality ratio are 1～5:1, and sodium hydroxide concentration is gold mine quality 1～20%, and NaOH is commercially available caustic soda or technical grade caustic soda.
2. the method for the ultrasound-enhanced leaching of Refractory Au-ores according to claim 1, is characterized in that: in described step 3, the addition of Cymag is 2～20kg/tGold mine。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410374043.6A CN104131160B (en) | 2014-08-01 | 2014-08-01 | The method of the ultrasound-enhanced leaching of a kind of Refractory Au-ores and ultrasound-enhancedly soak golden agitator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410374043.6A CN104131160B (en) | 2014-08-01 | 2014-08-01 | The method of the ultrasound-enhanced leaching of a kind of Refractory Au-ores and ultrasound-enhancedly soak golden agitator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104131160A CN104131160A (en) | 2014-11-05 |
| CN104131160B true CN104131160B (en) | 2016-05-11 |
Family
ID=51804009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410374043.6A Expired - Fee Related CN104131160B (en) | 2014-08-01 | 2014-08-01 | The method of the ultrasound-enhanced leaching of a kind of Refractory Au-ores and ultrasound-enhancedly soak golden agitator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104131160B (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104630466A (en) * | 2015-01-20 | 2015-05-20 | 昆明理工大学 | Method for collaboratively leaching gold in refractory gold ores by virtue of ultrasonic enhancement, chlorination and oxidization |
| CN106319239B (en) * | 2016-08-24 | 2018-06-29 | 铜仁市万山区盛和矿业有限责任公司 | A kind of extracting method of arsenical pyrite |
| CN106167853B (en) * | 2016-08-24 | 2019-06-18 | 铜仁市万山区盛和矿业有限责任公司 | A kind of ultrasonic extraction process of gold |
| CN106350670A (en) * | 2016-08-24 | 2017-01-25 | 铜仁市万山区盛和矿业有限责任公司 | Treatment process of pyrrhotite |
| CN106924993B (en) * | 2017-05-12 | 2022-07-15 | 赤峰吉隆矿业有限责任公司 | Ultrasonic-enhanced gold cyaniding leaching system |
| CN107779610A (en) * | 2017-10-09 | 2018-03-09 | 贵州大学 | A kind of method and device of ultrasonic combined stirring pretreatment refractory gold ore |
| CN107988489A (en) * | 2017-12-05 | 2018-05-04 | 西安天宙矿业科技开发有限责任公司 | New method is leached in a kind of Carbonaceous gold ore insulation |
| CN109467101B (en) * | 2018-12-28 | 2020-11-27 | 北京科技大学 | Process method for preparing aluminum-silicon solution by dissolving laterite-nickel ore smelting slag |
| CN112941318B (en) * | 2020-12-28 | 2021-12-31 | 生态环境部南京环境科学研究所 | Horizontal oscillation type leaching equipment for leaching heavy metal in lead-zinc slag |
| CN113333916A (en) * | 2021-06-02 | 2021-09-03 | 南京理工大学 | Rotary ultrasonic vibration gas current-carrying powder feeder and electric arc material increase system |
| CN113264542A (en) * | 2021-06-15 | 2021-08-17 | 扬州阿鲁达环境科技有限公司 | Ultrasonic ore dissolving device for alkali mine and treatment process thereof |
| CN113549754A (en) * | 2021-07-30 | 2021-10-26 | 昆明理工大学 | Ultrasonic strengthening pretreatment-leaching method for refractory antimony-and/or arsenic-containing gold concentrate |
| CN113718111A (en) * | 2021-08-26 | 2021-11-30 | 昆明理工大学 | Method for extracting gold by using ultrasonic cooperation of bromide |
| CN113718113A (en) * | 2021-09-13 | 2021-11-30 | 昆明理工大学 | Method for efficiently pre-oxidizing gold sulfide concentrate by using low-concentration ozone through ultrasonic enhancement |
| CN113718112A (en) * | 2021-09-13 | 2021-11-30 | 昆明理工大学 | Method for pre-oxidizing refractory high-sulfur gold ore by ultrasonic activation of persulfate |
| CN114289451A (en) * | 2021-12-27 | 2022-04-08 | 鹤庆北衙矿业有限公司 | Ultrasonic synergetic SO2Method for degrading gold cyanidation tailings |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1194109C (en) * | 2002-05-20 | 2005-03-23 | 严卓理 | Supersonic pre-treatment process of refractory gold ore containing As.S. etc. |
| CN201058558Y (en) * | 2007-07-06 | 2008-05-14 | 上海轨道交通设备发展有限公司 | Wheel pair for underground vehicle steering frame |
| CN101748285A (en) * | 2008-12-17 | 2010-06-23 | 北京有色金属研究总院 | Refined gold ore cyaniding and leaching process |
-
2014
- 2014-08-01 CN CN201410374043.6A patent/CN104131160B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1194109C (en) * | 2002-05-20 | 2005-03-23 | 严卓理 | Supersonic pre-treatment process of refractory gold ore containing As.S. etc. |
| CN201058558Y (en) * | 2007-07-06 | 2008-05-14 | 上海轨道交通设备发展有限公司 | Wheel pair for underground vehicle steering frame |
| CN101748285A (en) * | 2008-12-17 | 2010-06-23 | 北京有色金属研究总院 | Refined gold ore cyaniding and leaching process |
Non-Patent Citations (2)
| Title |
|---|
| 金精矿超声波强化硝酸预氧化提金研究;陈玉明等;《中国矿业》;20041231;第13卷(第2期);第68-70页 * |
| 难浸金矿预处理技术及其应用;周丽等;《国外金属矿选矿》;20040331;第12-14页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104131160A (en) | 2014-11-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104131160B (en) | The method of the ultrasound-enhanced leaching of a kind of Refractory Au-ores and ultrasound-enhancedly soak golden agitator | |
| CN107758836B (en) | Method for removing refractory organic matters through in-situ coupling of microbial fuel cell and persulfate Fenton technology | |
| CN103334007B (en) | The method of liquid recycling more than baking acid immersion extraction process output extraction copper | |
| CN103145273A (en) | Method and device for adsorbing, reducing, oxidizing and degrading nitrobenzene wastewater | |
| CN108660326A (en) | A method of reduction acidolysis-leaching is simultaneously except iron handles manganese oxide ore | |
| CN104694750B (en) | Environment-friendly yttrium oxide saponification-free extraction method | |
| CN104630466A (en) | Method for collaboratively leaching gold in refractory gold ores by virtue of ultrasonic enhancement, chlorination and oxidization | |
| CN204058558U (en) | The golden agitator of a kind of ultrasound-enhanced leaching | |
| CN107840415A (en) | A kind of method that iron-carbon micro-electrolysis filler is prepared using pickling iron cement | |
| CN102363842B (en) | Process for recovering arsenic comprehensively by two-section roasting of arsenic-containing and carbon-containing gold concentrates | |
| CN104532004B (en) | A kind of method extracting noble silver from iron making and sintering ash | |
| CN103951026A (en) | Method of catalyzing trivalent arsenic in air oxidation liquor by taking manganese dioxide as catalyst | |
| CN112391526A (en) | Mining multifunctional ultrasonic pretreatment device and use method thereof | |
| CN113355519B (en) | Method for leaching copper in waste circuit board by using microwave-enhanced thiobacillus ferrooxidans | |
| CN108486368B (en) | Method for leaching arsenic-containing carbonaceous gold ore by pyrolusite high pressure-non-cyanidation | |
| CN107385208B (en) | A kind of microwave-assisted golden method of reinforcing leaching | |
| Liu et al. | Research progress of electro-oxidation intensification leaching for refractory ore | |
| CN114380361B (en) | Method for recycling uranium in uranium-containing wastewater and groundwater through electrochemical reduction enrichment in coexistence of nitrate | |
| CN206666209U (en) | PH value adjustment equipment is used in ammonia nitrogen waste water processing | |
| CN108913878A (en) | A kind of arsenic removing method of iron ore | |
| CN112442591B (en) | Copper-nickel leaching and iron separation method for copper-nickel sulfide ore | |
| CN103572041A (en) | Wet deep dearsenification method for high-arsenic iron ores | |
| CN113718111A (en) | Method for extracting gold by using ultrasonic cooperation of bromide | |
| CN113718112A (en) | Method for pre-oxidizing refractory high-sulfur gold ore by ultrasonic activation of persulfate | |
| CN113737025A (en) | Efficient vanadium extraction method and efficient vanadium extraction device for high-silicon refractory stone coal vanadium ore |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160511 Termination date: 20210801 |