CN100376697C - Technique of heap leaching atomized liquid for cloth - Google Patents
Technique of heap leaching atomized liquid for cloth Download PDFInfo
- Publication number
- CN100376697C CN100376697C CNB2004100231799A CN200410023179A CN100376697C CN 100376697 C CN100376697 C CN 100376697C CN B2004100231799 A CNB2004100231799 A CN B2004100231799A CN 200410023179 A CN200410023179 A CN 200410023179A CN 100376697 C CN100376697 C CN 100376697C
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- Prior art keywords
- leaching
- liquid
- dump
- ore
- favorable
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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
Abstract
The present invention discloses the dump leaching atomizing liquid distributing technology. A wall of a permanent stock dump is used as a basis, and a mist cover which is dismountable and is relatively sealed is built on the wall. In the cover, spraying machinery is adopted to fully nebulize leaching liquid. During nebulization, the working pressure of the leaching liquid is higher than 0.5MPa; the sprinkling strength is between 8.5 and 11.5 mm/h; the diameters of liquid drops are between 0.14 and 0.24mm. The volume of the leaching liquid is increased after nebulization, which is favorable for the contact of extractives, and is favorable for controlling the migration velocity of the leaching liquid in an ore dump. Accordingly, the uniformity of liquid distribution is enhanced. Furthermore, the air content in the leaching liquid is increased because the contact area of the air and the leaching liquid is increased after nebulization, which is more favorable for the oxidation of minerals. Accordingly, the oxidative decomposition of minerals can be prompted, and the leaching rate is enhanced. The leaching liquid is in contact with ore in a misty form, which has a smaller pressure ratio to an ore dump than other liquid distribution technology. Therefore, the present invention is more favorable for keeping the loose state of an ore dump in a leaching process, enhancing the permeability of an ore dump, and further enhancing the leaching rate.
Description
Technical field
The present invention relates to the dump leaching liquid distributing method in a kind of solution mining, particularly dump leaching atomizing irrigation technology.
Background technology
Solution mining has fundamentally changed conventional mining technology, simplified adopt, choosing, smelting operation, be adopt, choosing, the polytechnic great development of smelting.Therefore.This technology develops all very fast at home and abroad, and especially in rare metals such as uranium, gold, copper exploitation field, exploitation proportion is increasing.International IAEA organizes and it is classified as important developing direction.The dump leaching technology is an importance of solution mining, is in developmental stage at present, in Mineral resources processing extraordinary prospect is arranged.The key that the dump leaching technology will obtain good economic benefit is to improve the leaching yield of dump leaching, the leaching yield height of dump leaching is except the ore self character, depend on that also to build heap mode, liquid distributing method and system etc. all multifactor, wherein adopt liquid distribution system rationally and effectively, can improve the leaching yield of dump leaching effectively, all obtained confirmation in many dump leaching mines, the exploration performance is good, liquid distribution system that efficient is high is the needs of dump leaching technical development, also is an urgent demand in many dump leaching mine.
External general at present employing rotary spray formula cloth liquid (Sai Nige shower nozzle) and drip irrigation (soaking) formula cloth liquid dual mode, and tend to adopt the latter, the many dump leaching of Nevada, USA recent years field will spray cloth liquid and change drip irrigation (soaking) formula cloth liquid into.The advantage of drip irrigation (soaking) formula cloth liquid is that steam output is few, and freezing season can be kept production.
The present dump leaching technology of China has entered the flourish new stage, the dump leaching technology is all adopted in the mine of some industrial sector 80%, the construction of dump leaching field also develops to permanent type dump leaching field from initial interim formula experiment place, and mainly be formula dump leaching field, room (the tetragonal body dump leaching field that does not promptly have top cover) in the permanent type dump leaching of building, this dump leaching field has become domestic dump leaching field and has built developing direction, and its appearance has brought the change of building heaping equipment and dump leaching cloth liquid technology.The present dump leaching liquid distribution system of China has the pool, weir to irrigate four kinds of cloth liquid modes such as formula liquid distribution system, spray thrower liquid distribution system, miniature spray thrower liquid distribution system and drip irrigation type liquid distribution system, and based on spray thrower liquid distribution system and drip irrigation type liquid distribution system dual mode.But above-mentioned four kinds of dump leaching liquid distribution systems all have defective in various degree, adopt the pool, weir to irrigate the formula liquid distribution system, be unfavorable for of the requirement of the chemical reaction of leaching solution and ore, when pumping into leaching solution oxygen, cause the ore storage surface local to wash away easily, cause inhomogeneous infiltration.The pool, weir is irrigated the formula liquid distribution system and is still had its points of course for degree of oxidation high ore and the less dump leaching field of ore storage scale, but generally should not adopt for large-scale dump leaching field.Adopt dump leaching spray thrower liquid distribution system,, reduce leaching yield, whole dump leaching field is scrapped, cause serious economy loss because the ununiformity of spray thrower spraying intensity causes the dump leaching dead angle easily.Miniature spray thrower liquid distribution system, though can improve the homogeneity of cloth liquid, result of use is not too obvious, and the product bit comparison height of some dump leaching tailings.It is big that the drip irrigation type liquid distribution system exists installation workload, has the phenomenon at dump leaching dead angle, and this liquid distribution system is relatively more responsive to fouling, after the transmitting tube fouling, is not easy to be found, and therefore causes the phenomenon of non-uniform spraying to take place, and reduces leaching yield.
Summary of the invention
The purpose of this invention is to provide a kind of can making and contain the air capacity increase in the leaching solution, be beneficial to the oxidized dump leaching atomizing irrigation technology of mineral, irrigate many weak points that formula liquid distribution system, spray thrower liquid distribution system, miniature spray thrower liquid distribution system and drip irrigation type liquid distribution system exist to solve the existing pool, weir.
In order to realize the foregoing invention purpose, the technical solution used in the present invention is: dump leaching atomizing irrigation technology, wall based on permanent stockyard, build the fog cover of demountable a, relative closure thereon, adopt spraying mechanical that leaching solution is fully atomized in the cover, the operating pressure of leaching solution is at 0.5MPa during atomizing, and spraying intensity is characterized in that droplet dia is between 0.14-0.24mm between 8.5-11.5mm/h.
The present invention helps contacting with the material that is leached because after the leaching solution atomizing, its volume increases, and helps controlling the travelling speed of leaching solution in ore storage, thereby improves cloth liquid homogeneity.And because the area that leaching solution atomizing back contacts with air increases, make to contain the air capacity increase in the leaching solution, it is oxidized more to help mineral.That is to say that the present invention helps " breathing certainly " process (i.e. " smokestack effect ") in the dump leaching, thereby can impel the mineral oxygenolysis, improves leaching yield.Also because leaching solution is a form with mist contact with ore, other cloth liquid technology is not little to the pressure of ore storage for it, therefore, is more conducive to keep the rarefaction of ore storage in leaching process, the perviousness of raising ore storage, and then raising leaching yield.
Embodiment
Dump leaching atomizing irrigation technology, it is the wall based on permanent stockyard, build the fog cover of demountable a, relative closure thereon, adopt spraying mechanical that leaching solution is fully atomized in the cover, the operating pressure of leaching solution is at 0.5MPa during atomizing, spraying intensity is between 8.5-11.5mm/h, and droplet dia is between 0.14-0.24mm.The fog cover can adopt the glass reinforced plastic piecemeal to be spliced.
Claims (1)
1. dump leaching atomizing irrigation technology, wall based on permanent stockyard, build the fog cover of demountable a, relative closure thereon, adopt spraying mechanical that leaching solution is fully atomized in the cover, the operating pressure of leaching solution is at 0.5MPa during atomizing, spraying intensity is characterized in that droplet dia is between 0.14-0.24mm between 8.5-11.5mm/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100231799A CN100376697C (en) | 2004-05-01 | 2004-05-01 | Technique of heap leaching atomized liquid for cloth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100231799A CN100376697C (en) | 2004-05-01 | 2004-05-01 | Technique of heap leaching atomized liquid for cloth |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1626689A CN1626689A (en) | 2005-06-15 |
| CN100376697C true CN100376697C (en) | 2008-03-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100231799A Expired - Fee Related CN100376697C (en) | 2004-05-01 | 2004-05-01 | Technique of heap leaching atomized liquid for cloth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100376697C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103074488B (en) * | 2013-01-31 | 2014-05-28 | 谷盾 | Oxidation leaching method and system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87105351A (en) * | 1986-08-13 | 1988-06-08 | 卡迈尔公司 | Utilize the heap leaching of oxygen |
| US5030279A (en) * | 1987-11-03 | 1991-07-09 | Krauth Richard G | Controlled percolation method for heap leach mining |
| CN1351673A (en) * | 1999-05-19 | 2002-05-29 | 拜克莱克(澳大利亚)控股有限公司 | Improved method for heap leaching of chalocopyrite |
| WO2003068999A1 (en) * | 2002-02-14 | 2003-08-21 | Billiton Sa Limited | Delivery system for heap bioleaching |
-
2004
- 2004-05-01 CN CNB2004100231799A patent/CN100376697C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87105351A (en) * | 1986-08-13 | 1988-06-08 | 卡迈尔公司 | Utilize the heap leaching of oxygen |
| US5030279A (en) * | 1987-11-03 | 1991-07-09 | Krauth Richard G | Controlled percolation method for heap leach mining |
| CN1351673A (en) * | 1999-05-19 | 2002-05-29 | 拜克莱克(澳大利亚)控股有限公司 | Improved method for heap leaching of chalocopyrite |
| WO2003068999A1 (en) * | 2002-02-14 | 2003-08-21 | Billiton Sa Limited | Delivery system for heap bioleaching |
Non-Patent Citations (1)
| Title |
|---|
| 15PLK喷淋头的研究. 雷泽勇，符辰湛.南华大学学报(理工版)，第17卷第4期. 2003 * |
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| Publication number | Publication date |
|---|---|
| CN1626689A (en) | 2005-06-15 |
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Granted publication date: 20080326 Termination date: 20100501 |