CN1220784C - Ore dressing process of clay type gold ore leaching method - Google Patents
Ore dressing process of clay type gold ore leaching method Download PDFInfo
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- CN1220784C CN1220784C CNB031252427A CN03125242A CN1220784C CN 1220784 C CN1220784 C CN 1220784C CN B031252427 A CNB031252427 A CN B031252427A CN 03125242 A CN03125242 A CN 03125242A CN 1220784 C CN1220784 C CN 1220784C
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- clay
- heap
- ore
- type gold
- granules
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- 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
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Abstract
The present invention belongs to the technical field of heap leaching ore dressing, which relates to ore dressing technology of a clay type gold ore heap leaching method, which comprises the following steps: (1) raw ore crushing; (2) manufacturing granules; (3) building heaps; (4) spraying. The ore dressing technology is characterized in that in manufacturing granules, (1) loose and leaky grain casings and clay type gold ores after crushed can be together added into a granulator for fully and uniformly mixing, and the adding quantity is 2 to 5kg per ton ores; when clay is more than gravel, a large value is taken; when the clay is less than the gravel, a small value is taken; (2) enough water needs to be added during manufacturing granules, the additional water quantity is 15 to 25% of the weight of dry material, and in visual, the limit is the granules not seriously sticking straps; in building heaps, in the process of building heaps, the segmenting and the betimes flat stacking can be carried out before the granules are dried, and one layer of straw can be immediately laid; the straw can be cut short, and the length is 18 to 22cm. The ore dressing technology has the characteristics of good permeability, high gold leaching rate and low production cost, and simultaneously, the working environment is improved.
Description
Technical field
The invention belongs to the heap-leaching dressing process field, relate to a kind of heap-leaching dressing process for clay type gold mine specifically.
Background technology
The ore dressing of dump leaching method is a kind of newer gold extraction technology that grows up phase earlier 1970s, and this method has that technology is simple, less investment, cost is low, industrial scale is changeable advantage, is suitable for handling low-grade golden oxidized ore, mine tailing, the slag etc. of containing.The reserves of loam mould (laterite type, black type) gold mine are big, grade is low, with the deficiency in economic performance of other method ore dressing.And with the ore dressing of dump leaching method, when not broken or particle size after cracking was thick, then ore leachate was difficult to be penetrated into ore particle inside; During fine size, then harden easily at spray process chats heap, ore leachate is difficult to be penetrated into heap bottom, ore deposit.The method that the American makes granule with binding agent cement with loose smitham solves above-mentioned contradiction.Its weak point: cement mixing content after a little while, the granule efflorescence of scattering easily influence the ore deposit and piles overall permeability, cement mixing content has improved production cost again for a long time; And ore deposit heap perviousness is relatively poor, and gold leaching rate is not high.
Summary of the invention
The object of the present invention is to provide a kind of good penetrability, gold leaching rate height, heap-leaching dressing process for clay type gold mine that production cost is low, it also can improve Working environment.
To achieve these goals, technical scheme of the present invention is: heap-leaching dressing process for clay type gold mine, and 1), crushing raw ore it is realized by the following step:: with loam mould (laterite type or black type) gold mine fragmentation, its granularity＜5cm, its optimum value＜3cm; 2), briquetting grain; 3), build heap; 4), spray: its spraying intensity be the 20-40 liter/square metre hour, dump leaching in earlier stage should get the small value, in case the ore deposit heap hardens too early, get higher value mid-term, purpose is to soak into the dead angle; Later stage should get the small value, because your liquid grade is too low, is unfavorable for absorption, and the spray intermittent time is not shorter than 1.5 hours; It is characterized in that: the briquetting grain: the profit of 1. will loosening is oozed clay type gold mine after material husk and the fragmentation, and together to join in the nodulizer thorough mixing even, its dosage should add 2-5kg by ore per ton, clay is got higher value during more than gravel, gets smaller value when clay is less than gravel; 2. also will fill up water during the briquetting grain, amount of water is the 15-25% of dry material weight, and directly perceived going up exceeded with the not serious ixoderm band of granule; Build heap: build in the heap process, should segmentation in time put down heap before the granule drying, and the layer overlay straw hides immediately, make a maintenance moistening, even in order to accomplish cloth liquid, straw should cut up with a hay cutter weak point, and length is 18-22cm.
The present invention uses loose oozing property of profit material husk instead and replaces cement to make auxiliary material, can obviously improve ore deposit heap perviousness and leaching yield, can significantly reduce production costs again, also can improve Working environment; Equipment required for the present invention is few, technology is simple, and loose oozing property of profit material adopts husk to compare with adopting straw, has the characteristics of acquiring particle equipment, need not the particle process of need not.
In order to verify feasibility of the present invention, do post and soaked test, now test-results is listed in table 1.
Table 1 a small-sized post of pouring soaks each parameter table look-up of experiment
| Test conditions and project | The 1st post |
| Sample weight (kg) | 10 |
| Sample material footpath (mm) | 5-20 |
| Husk (g) | 45 |
| Sodium cyanide concentration (%) | 0.1-0.03 |
| Raw ore gold grade (g/t) | 1.8 |
| Drip to drench intensity (rise/square metre hour) | Preceding 20 backs 40 |
| Drip the pouring time (hour) | 1 |
| Intermittent time (hour) | 1 |
| Tailings gold grade (g/t) | 0.05 |
| Gold leaching rate (%) | 97.222 |
| Leaching cycle (d) | 5 |
| Washing time (hour) | 8 |
Test-results is satisfactory, and a pouring intensity increases to 80 liters/square metre hours is not still had ponding; The profit that shows this material is oozed functional.Gold leaching rate (%) reaches 97.222, the gold leaching rate height.
Think that through experimental study this production technique has following advantage:
1. can significantly improve ore deposit heap perviousness and gold leaching rate.
2. reduce production costs.Used auxiliary material husk aboundresources, its consumption only are cement
About, unit price only is a cement
About.Article one, handle the production line of 100,000 tons of ores year, can save about 250,000 yuan of materials cost every year.
3. improve Working environment.Cement dust is big, influence the healthy of operator, and the dust of present method material therefor is very little.
Embodiment
Heap-leaching dressing process for clay type gold mine, it is realized by the following step:
1), crushing raw ore: with loam mould (laterite type or black type) gold mine fragmentation, its granularity＜5cm, its optimum value＜3cm.
2), briquetting grain: the profit of 1. will loosening is oozed clay type gold mine after material husk and the fragmentation, and together to join in the nodulizer thorough mixing even, and its dosage should add 2-5kg by ore per ton, and clay is got higher value during more than shode stone, gets smaller value when clay is less than gravel; Also will fill up water when 2. granulating, amount of water is the 15-25% of dry material weight, and directly perceived going up exceeded with the not serious ixoderm band of granule.
3), build heap: build in the heap process, should segmentation in time put down heap before the granule drying, and the layer overlay straw hides immediately, make a maintenance moistening, even in order to accomplish cloth liquid, straw should cut up with a hay cutter weak point, and length is about 20cm.
4), spray: its spraying intensity be the 20-40 liter/square metre hour, dump leaching in earlier stage should get the small value, in case the ore deposit heap hardens too early, get higher value mid-term, purpose is to soak into the dead angle; Later stage should get the small value, because your liquid grade is too low, is unfavorable for absorption.The spray intermittent time is not shorter than 1.5 hours.
Claims (1)
1. heap-leaching dressing process for clay type gold mine, 1), crushing raw ore it is realized by the following step:: with the clay type gold mine fragmentation, its granularity＜5cm; 2), briquetting grain; 3), build heap; 4), spray: its spraying intensity be the 20-40 liter/square metre hour, spray is not shorter than 1.5 hours the intermittent time; It is characterized in that: the briquetting grain: the profit of 1. will loosening is oozed clay type gold mine after material husk and the fragmentation, and together to join in the nodulizer thorough mixing even, its dosage should add 2-5kg by ore per ton, clay is got higher value during more than gravel, gets smaller value when clay is less than gravel; Also will fill up water when 2. granulating, amount of water is the 15-25% of dry material weight, and directly perceived going up exceeded with the not serious ixoderm band of granule; Build heap: build in the heap process, should segmentation in time put down heap before the granule drying, and the layer overlay straw hides immediately, straw should cut up with a hay cutter weak point, and length is 18-22cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031252427A CN1220784C (en) | 2003-08-08 | 2003-08-08 | Ore dressing process of clay type gold ore leaching method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031252427A CN1220784C (en) | 2003-08-08 | 2003-08-08 | Ore dressing process of clay type gold ore leaching method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1473946A CN1473946A (en) | 2004-02-11 |
| CN1220784C true CN1220784C (en) | 2005-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031252427A Expired - Fee Related CN1220784C (en) | 2003-08-08 | 2003-08-08 | Ore dressing process of clay type gold ore leaching method |
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| CN (1) | CN1220784C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251123A (en) * | 2011-06-28 | 2011-11-23 | 广西地博矿业集团股份有限公司 | Gold extraction process of refractory gold ore |
| CN104498730B (en) * | 2014-12-03 | 2016-06-15 | 云南黄金矿业集团股份有限公司 | The processing method of low-grade gold |
| CN105886793A (en) * | 2016-06-23 | 2016-08-24 | 昆明冶金研究院 | Deep metamorphic clay type gold ore leaching method with high recycle rate |
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2003
- 2003-08-08 CN CNB031252427A patent/CN1220784C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1473946A (en) | 2004-02-11 |
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