CN1194109C - Supersonic pre-treatment process of refractory gold ore containing As.S. etc. - Google Patents
Supersonic pre-treatment process of refractory gold ore containing As.S. etc. Download PDFInfo
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- CN1194109C CN1194109C CNB021152438A CN02115243A CN1194109C CN 1194109 C CN1194109 C CN 1194109C CN B021152438 A CNB021152438 A CN B021152438A CN 02115243 A CN02115243 A CN 02115243A CN 1194109 C CN1194109 C CN 1194109C
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Abstract
The present invention comprises the following technological processes and conditions that (1) gold ores to be processed are put in a reaction container, and gold ore immersion liquid of alkaline aqueous agents is added; (2) the reaction container containing the gold ores is arranged in a focused ultrasonic function groove; (3) the frequency of a focused ultrasonic function head is adjusted to 40 to 55kHz, and the irradiation time is 40 to 90 minutes; (4) the alkaline immersion liquid of metal ores is converted to alkaline oxidation immersion liquid; (5) the frequency of the focused ultrasonic function head is adjusted to 55 to 70kHz, and the frequency mixing irradiation is about 100 minutes. The present invention has the following obvious characteristics that components, such as sulphur, arsenic, etc., can be easily separated and removed from gold ores in ultrasonic 'cavitation' effect by ultrasonic technology assisting with definite chemical conditions. The present invention has the advantages of short processing time, low cost, easy enforcement, safety and environmental protection, and devices and technological conditions of the present invention have simple requirements.
Description
Technical field
The present invention relates to the process for extracting of precious metal, specifically relate to from contain difficult-treating gold mine sand such as pozzuolite, extract the pretreatment process of gold.
Background technology
Along with the collection of gold mine more and more tends to deep layer, toxic property components contents such as the sulphur arsenic in its mineral resources can increase, toxic property impurity such as sulphur arsenic, the technology that extracts gold from for traditional diafiltration cyaniding, play great iris action, make cyaniding get golden rate and reduce greatly, and even cause failure.So the toxic components such as sulphur arsenic in gold sand, the mine tailing are removed by pre-treatment have just become key, adopting cyaniding to extract gold from aspect the supporting pre-treatment of composition to the gold sand that contains toxic component such as relatively large amount pozzuolite, mine tailing, existing technology mainly contains following several method: 1. roasting method; 2. pressure oxidation method; 3. biological oxidation process; 4. conventional (highly basic condition) method; All there is drawback separately in these several traditional technologys.The roasting method power consumption brings hazardness to pollute greatly and to atmosphere; The pressure oxidation method requires to make excessive demands to reaction vessel material and manufacturing, and safety also has problem, and cost is also expensive; Biological oxidation process technology beat needs week, especially needs to carry out spawn culture work; Conventional method is because use highly basic is also overcritical relatively to the requirement of reaction chamber material.
Summary of the invention
The objective of the invention is to propose a kind of ultrasonic technology that utilizes under mild conditions separates components such as sulphur arsenic from gold sand, mine tailing, thereby obtain a kind of method of tractable gold ore, its have equipment simple, can carry out scale operation, characteristics such as energy-conservation, safe.
The present invention proposes a kind of ultrasonic pretreatment method that contains the auriferous ore of the poisonous difficult thing of pozzuolite, and it comprises gold sand supersound process program 1 and 2 liang of large programs of gold sand supersound process program, it is characterized in that:
Described gold sand supersound process program 1 comprises following technological process and condition:
(1) auriferous ore that will handle is put into a reaction vessel, and inserts the auriferous ore alkaline extracting fluid, and described auriferous ore alkaline extracting fluid is a kind of alkaline water agent solution, and its pH value is 8～12.5, and temperature is normal temperature～80 ℃;
(2) reaction vessel with the splendid attire auriferous ore places in the focusing ultrasound functions groove, described focusing ultrasound functions groove is such cell body, be provided with a plurality of ultrasound functions heads from ultrasonic energy to the cell body center that can launch around it, these ultrasound functions head institute ultrasonic waves transmitted frequencies are adjustable;
(3) start ultrasonic generator, the frequency of each focusing ultrasound functions head is transferred to 40～55kHz respectively, the combination that the frequency of each functional head can be identical or different, irradiation time is 40～90 minutes;
Described gold sand supersound process program 2 comprises following technological process and condition:
(4) will become the immersion liquid of alkaline oxygenated property through the auriferous ore alkaline extracting fluid that gold sand supersound process program 1 is handled, it has one of following three kinds of measures: A, adds oxidizing substance in former alkaline extracting fluid; B, former alkaline extracting fluid is taken out, more change to new alkaline oxygenated property immersion liquid; C, auriferous ore is taken out the system that another possesses immersion liquid of alkaline oxygenated property and foregoing supersound process condition of putting into;
(5) restart ultrasonic generator, the frequency of each focusing ultrasound functions head is transferred to 55～70kHz respectively, the combination that the frequency of each functional head can be identical or different, mixing irradiation 30～100 minutes.
Further scheme is: reaction system is equipped with and stirs or rotating machinery makes floating in reaction vessel, the motion of gold digging, and this is floating, motion can be continuously in the entire treatment process or discontinuous carries out.
Further design is again: reaction vessel and ultrasound functions cell body unite two into one, promptly directly with the ultrasound functions groove as reaction vessel.
Further scheme is: in reaction system at least one direct insertion ultrasonic wave function rod is inserted in the reaction vessel immersion liquid of splendid attire auriferous ore;
And in gold sand supersound process program 1, the ultrasonic frequency of direct insertion ultrasonic wave function rod is transferred to 15～25kHz, if many direct insertion ultrasonic wave function rods, then their frequency can be different combination, makes that the auriferous ore system is in ultrasonic mixing irradiation in the reaction vessel;
Ultrasonic frequency with direct insertion ultrasonic wave function rod in gold sand supersound process program 2 transfers to 20～30kHz, if many direct insertion ultrasonic wave function rods, then their frequency can be different combination, makes that the auriferous ore system is in ultrasonic mixing irradiation simultaneously in the reaction vessel.
Contain in the foregoing alkaline oxygenated property of the auriferous ore immersion liquid in gold sand supersound process program 2 following compound one or both or all: BaO, dimethyl sulfoxide (DMSO), hydrogen peroxide;
The content of wherein said BaO is 1% of auriferous ore weight; The content of described dimethyl sulfoxide (DMSO) is 2% of immersion liquid weight; The content of described hydrogen peroxide is 3% of immersion liquid weight.
Compared with prior art, the present invention has following distinguishing feature:
(1) the present invention utilizes ultrasonic technology to be aided with certain electrochemical conditions, easily the components such as sulphur arsenic in the auriferous ore is separated in ultrasonic " cavitation " effect and removes, and the treatment time is short, and cost is low, and the cyaniding diafiltration that is easy to gold through pretreated gold sand is extracted.
(2) equipment used of the present invention and processing condition require simply, enforcement, and safety easily, environmental protection.
The present invention is further illustrated with embodiment below:
Embodiment
Embodiment 1:
Contain in the auriferous ore composition to be processed:
1. golden; 2. the oxide compound of arsenic or salt; 3. sulfide; 4. other impure composition.
This example carries out in two stages:
The treatment stage of at the beginning of ultrasonic:
(1) treatment facility adopts the horizontal focus supersonic treater of a multi-faceted column, its each face is provided with a plurality of ultrasound functions heads, each ultrasound functions head is connected to the ultra-sonic generator of frequency adjustable, is provided with in the ultrasound functions groove and can makes the whipping appts that materials inside stirs and make materials inside keep the thermostat of certain temperature;
(2) auriferous ore that will handle is put into above-mentioned treater, inserts immersion liquid, and this immersion liquid is the alkaline water agent solution, and pH value is 8～12.5;
(3) start ultrasonic generator, regulate the combination (frequency of each ultrasound functions head be different combination) of ultrasonic frequency between 40～55kHz, regulate the interior material temperature of treater simultaneously at 25～70 ℃; Irradiation time is about 60 minutes, starts whipping appts simultaneously and makes material turning in the reaction vessel, makes it fully accept ultrasonic irradiation.
2 stages of supersound process:
(4) need not more exchange device, only adding is equivalent to the BaO of auriferous ore 1% and is equivalent to the dimethyl sulfoxide (DMSO) of immersion liquid 2% and is equivalent to immersion liquid 3% hydrogen peroxide make immersion liquid become the oxidisability immersion liquid in the immersion liquid just the treatment stage;
(5) regulate the combination of frequency between 50～70kHz of each ultrasonic wave functional head, regulate material temperature in the treater simultaneously, constant temperature keeps 55～65 ℃, and irradiation time is about 90 minutes, start whipping appts simultaneously and make material turning in the reaction vessel, make it fully accept ultrasonic irradiation.
Through after above-mentioned 2 stage processing, hazardous property sulfur impurity and arsenic composition in the auriferous ore are separated, and respectively with sulfur oxide, the salt form of the oxide compound of arsenic or higher valency is present in the water system immersion liquid; Gold in this auriferous ore leaches through operation (gold is extracted in the diafiltration cyaniding) processing thereafter easily, and the leaching yield of gold is about 96%.
Claims (8)
1. the ultrasonic pretreatment method that contains the auriferous ore of the poisonous difficult thing of pozzuolite comprises gold sand supersound process program 1 and 2 liang of large programs of gold sand supersound process program, it is characterized in that:
Described gold sand supersound process program 1 comprises following technological process and condition:
(1) auriferous ore that will handle is put into a reaction vessel, and inserts the auriferous ore alkaline extracting fluid, and described auriferous ore alkaline extracting fluid is a kind of alkaline water agent solution, and its pH value is 8～12.5, and temperature is normal temperature～80 ℃;
(2) reaction vessel with the splendid attire auriferous ore places in the focusing ultrasound functions groove, described focusing ultrasound functions groove is such cell body, be provided with a plurality of ultrasound functions heads from ultrasonic energy to the cell body center that can launch around it, these ultrasound functions head institute ultrasonic waves transmitted frequencies are adjustable;
(3) start ultrasonic generator, the frequency of each focusing ultrasound functions head is transferred to 40～55kHz respectively, irradiation time is 40～90 minutes;
Described gold sand supersound process program 2 comprises following technological process and condition:
(4) the auriferous ore alkaline extracting fluid of handling through gold sand supersound process program 1 becomes the immersion liquid of alkaline oxygenated property, and it has one of following three kinds of measures: A, adds oxidizing substance in former alkaline extracting fluid; B, former alkaline extracting fluid is taken out, more change to new alkaline oxygenated property immersion liquid; C, auriferous ore is taken out the system that another possesses immersion liquid of alkaline oxygenated property and foregoing supersound process condition of putting into;
(5) start ultrasonic generator, the frequency of each focusing ultrasound functions head is transferred to 55～70kHz respectively, irradiation 30～100 minutes.
2. the ultrasonic pretreatment method that contains the auriferous ore of the poisonous difficult thing of pozzuolite according to claim 1 is characterized in that: reaction vessel and ultrasound functions cell body unite two into one, promptly directly with the ultrasound functions groove as reaction vessel.
3. the ultrasonic pretreatment method that contains the auriferous ore of the poisonous difficult thing of pozzuolite according to claim 1 and 2 is characterized in that: reaction system is equipped with and stirs or rotating machinery, makes floating in reaction vessel, the motion of gold digging.
4. the ultrasonic pretreatment method that contains the auriferous ore of the poisonous difficult thing of pozzuolite according to claim 1 and 2 is characterized in that:
In reaction system, at least one direct insertion ultrasound functions rod is inserted in the reaction vessel immersion liquid of splendid attire auriferous ore;
And in gold sand supersound process program 1, the ultrasonic frequency of direct insertion ultrasonic wave function rod is transferred to 15～25kHz;
And in gold sand supersound process program 2, the ultrasonic frequency of direct insertion ultrasonic wave function rod is transferred to 20～30kHz.
5. the ultrasonic pretreatment method that contains the auriferous ore of the poisonous difficult thing of pozzuolite according to claim 1 and 2 is characterized in that: contain in the alkaline oxygenated property of the auriferous ore immersion liquid in gold sand supersound process program 2 following compound one or both or all: BaO, dimethyl sulfoxide (DMSO), hydrogen peroxide.
6. the ultrasonic pretreatment method that contains the auriferous ore of the poisonous difficult thing of pozzuolite according to claim 5 is characterized in that: the content of described BaO is 1% of auriferous ore weight.
7. the ultrasonic pretreatment method that contains the auriferous ore of the poisonous difficult thing of pozzuolite according to claim 5 is characterized in that: the content of described dimethyl sulfoxide (DMSO) is 2% of immersion liquid weight.
8. the ultrasonic pretreatment method that contains the auriferous ore of the poisonous difficult thing of pozzuolite according to claim 5 is characterized in that: the content of described hydrogen peroxide is 3% of immersion liquid weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021152438A CN1194109C (en) | 2002-05-20 | 2002-05-20 | Supersonic pre-treatment process of refractory gold ore containing As.S. etc. |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB021152438A CN1194109C (en) | 2002-05-20 | 2002-05-20 | Supersonic pre-treatment process of refractory gold ore containing As.S. etc. |
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| CN1398994A CN1398994A (en) | 2003-02-26 |
| CN1194109C true CN1194109C (en) | 2005-03-23 |
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| CNB021152438A Expired - Fee Related CN1194109C (en) | 2002-05-20 | 2002-05-20 | Supersonic pre-treatment process of refractory gold ore containing As.S. etc. |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131160A (en) * | 2014-08-01 | 2014-11-05 | 昆明理工大学 | Ultrasonic intensified leaching method for refractory gold ores and ultrasonic intensified gold leaching stirrer |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2010354435A1 (en) * | 2010-06-01 | 2012-12-20 | Geanina Silviana Banu | Method for recovering noble metals and other byproducts from ore |
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2002
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131160A (en) * | 2014-08-01 | 2014-11-05 | 昆明理工大学 | Ultrasonic intensified leaching method for refractory gold ores and ultrasonic intensified gold leaching stirrer |
| CN104131160B (en) * | 2014-08-01 | 2016-05-11 | 昆明理工大学 | The method of the ultrasound-enhanced leaching of a kind of Refractory Au-ores and ultrasound-enhancedly soak golden agitator |
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| Publication number | Publication date |
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| CN1398994A (en) | 2003-02-26 |
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