CN1970802A - Heap-leaching dressing process for clay type gold mine - Google Patents
Heap-leaching dressing process for clay type gold mine Download PDFInfo
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- CN1970802A CN1970802A CNA2006101251996A CN200610125199A CN1970802A CN 1970802 A CN1970802 A CN 1970802A CN A2006101251996 A CNA2006101251996 A CN A2006101251996A CN 200610125199 A CN200610125199 A CN 200610125199A CN 1970802 A CN1970802 A CN 1970802A
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- heap
- clay
- gold mine
- leaching
- type gold
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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 invention discloses an ore selecting technique through piling method, which comprises the following steps: 1) grinding ore with grain size less than 5cm; 2) making particle; 3) constructing pile; paving a layer of straw to mask; cutting straw with length at 18-22cm; 4) sprinkling with strength at 20-40l/cm2/h; setting the interval sprinkling time not less than 1.5h; blending clay gold and loose permeatible sawdust in the graining machine evenly with 1-5kg per ton; adding enough water.
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.
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: 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; 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: it is even that the clay type gold mine after the oozing property of profit of 1. will loosening material sawdust and the fragmentation together joins in the nodulizer thorough mixing, its dosage should add 1-5kg 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.
The present invention uses sawdust instead and makes loose oozing property of profit material, and sawdust easily mixes during the briquetting grain, can obviously improve ore deposit heap perviousness and leaching yield, and the sawdust source is wider, 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 sawdust to compare with straw, has the characteristics of acquiring particle equipment, need not the particle process of need not.The invention provides a kind of new source of loose oozing property of profit material, to satisfy the loose big requirement of oozing property of profit material requirement of large-scale dump leaching factory.
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 |
| Sawdust (g) | 45 |
| Sodium cyanide concentration (%) | 0.1-0.03 |
| Raw ore gold grade (g/t) | 1.46 |
| 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) | 0.04 |
| Gold leaching rate (%) | 97.26 |
| 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 97.26, 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 sawdust source is wider.
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
In order to understand the present invention better, further illustrate content of the present invention below in conjunction with embodiment, but content of the present invention not only is confined to the following examples.
Embodiment 1:
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) gold mine fragmentation, its granularity is 4.9cm.
2), briquetting grain: the profit of 1. will loosening is oozed clay type gold mine after material sawdust and the fragmentation, and together to join in the nodulizer thorough mixing even, and its dosage ore per ton adds 1kg (getting smaller value when clay is less than gravel); 2. amount of water is 15% of a 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, the in time flat heap of segmentation before the granule drying, and layer overlay straw covering immediately make a maintenance moistening, and straw length is 18cm.
4), spray: its spraying intensity is 20 liters/square metre hours, and the spray intermittent time is 1.5 hours.
Embodiment 2:
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 3cm.
2), briquetting grain: the profit of 1. will loosening is oozed clay type gold mine after material sawdust and the fragmentation, and together to join in the nodulizer thorough mixing even, and its dosage ore per ton adds 3kg; 2. amount of water is 20% of a 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, the in time flat heap of segmentation before the granule drying, and layer overlay straw covering immediately make a maintenance moistening, and straw length is 20cm.
4), spray: its spraying intensity is 30 liters/square metre hours, and the spray intermittent time is 2.0 hours.The results are shown in Table 1.
Embodiment 3:
Heap-leaching dressing process for clay type gold mine, it is realized by the following step:
1), crushing raw ore: with the fragmentation of loam mould (black type) gold mine, its granularity 2cm.
2), briquetting grain: the profit of 1. will loosening is oozed clay type gold mine after material sawdust and the fragmentation, and together to join in the nodulizer thorough mixing even, and its dosage ore per ton adds 5kg (clay more than gravel time get higher value); 2. amount of water is 25% of a 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, the in time flat heap of segmentation before the granule drying, and layer overlay straw covering immediately make a maintenance moistening, and straw length is 22cm.
4), spray: its spraying intensity is 40 liters/square metre hours, and the spray intermittent time is 2.5 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: 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; 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 sawdust and the fragmentation, and together to join in the nodulizer thorough mixing even, its dosage should add 1-5kg 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101251996A CN1970802A (en) | 2006-11-30 | 2006-11-30 | Heap-leaching dressing process for clay type gold mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101251996A CN1970802A (en) | 2006-11-30 | 2006-11-30 | Heap-leaching dressing process for clay type gold mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1970802A true CN1970802A (en) | 2007-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101251996A Pending CN1970802A (en) | 2006-11-30 | 2006-11-30 | Heap-leaching dressing process for clay type gold mine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105567993A (en) * | 2015-12-29 | 2016-05-11 | 安徽牛山新型材料科技有限公司 | Beneficiation method for low grade oxidized type gold and silver contained tailings |
| 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 |
-
2006
- 2006-11-30 CN CNA2006101251996A patent/CN1970802A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105567993A (en) * | 2015-12-29 | 2016-05-11 | 安徽牛山新型材料科技有限公司 | Beneficiation method for low grade oxidized type gold and silver contained tailings |
| 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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