CN1195878C - Gravity flow static adsorption method in gold ore bulk leaching - Google Patents
Gravity flow static adsorption method in gold ore bulk leaching Download PDFInfo
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- CN1195878C CN1195878C CNB03111976XA CN03111976A CN1195878C CN 1195878 C CN1195878 C CN 1195878C CN B03111976X A CNB03111976X A CN B03111976XA CN 03111976 A CN03111976 A CN 03111976A CN 1195878 C CN1195878 C CN 1195878C
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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
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Abstract
The present invention discloses a gravity flow static adsorption method for gold ore heap leaching, which adopts open type non-fluidization fixed bed adsorption tanks. Each tank is provided with an air lifter which can be used for stringing and lifting charcoal operation and an air charcoal loosing device which can prevent a charcoal bed hardening. A plurality of adsorption tanks are connected in series and arranged in a step type by selecting a favorable terrain of a mine, and the adsorption tanks are step by step lowered to 500 to 1000mm from the first tank to the tail tank. A liquid outlet pipe of a last adsorption tank is connected with a liquid inlet pipe of a next adsorption tank, and the air lifter of the next adsorption tank is connected with an opening of the last adsorption tank. The height of an active carbon layer in the first adsorption tank is 700 to 900mm, and the height of other tanks is step by step enhanced to 0 to 300mm according to alpha and omega order. The ideal adsorption rate can be obtained by selecting suitable carbon layer height and adsorption time according to different rich liquid grades and flows. Rich solution can flow in the adsorption tanks from a rich solution pool during work, and can be orderly adsorbed at each tank. A barren solution can be beat to a heap leaching field for spraying by a pump after flowed into a barren solution pool. The whole adsorption process can realize static gravity flow, and has no power consumption and active carbon abrasion. The labor intensity is low.
Description
One, technical field
The present invention relates to dressing process for gold ore, particularly dump leaching method is carried the adsorption method of rich solution in the golden process.
Two, background technology
In the technological process of dump leaching Fa Tijin, all adopt gac to adsorb gold in the rich solution to containing golden rich solution, its technical process is: contain golden rich solution and enter the rich solution pond, by dedicated pump rich solution is beaten to totally enclosed adsorption tower (post) and to be adsorbed, or enter steel basin and carry out whip attachment, the former requires the interior gac of tower (post) to be in up and down turbulence state in adsorption process, the latter then gac because of being stirred, in steel basin, being in the irregular movement state.The defective of two kinds of methods is: the former need be equipped with dedicated pump, has increased power consumption, and adorns charcoal, unloads the charcoal inconvenient operation, and labour intensity is big; The latter is that power consumption is big when stirring, and because of stirring causes the gac wearing and tearing, the smalls charcoal that is worn has been taken away the loss of part gold.
1991 the 12nd volumes of " gold " periodical disclose a kind of: " development of new type adsorption trough for heap leaching technology and application ", it is that a plurality of adsorption tanks are carried out arranged in series by staged, this adsorption system at simplified construction, improve performance and adaptability, the convenient installation with aspects such as operation had progress, but still exist go here and there charcoal carry the charcoal operation labor intensity greatly, the charcoal bed easily hardens and ascending liquid is inhomogeneous influences deficiencies such as adsorption rate, processing power are little.
Three, summary of the invention
The objective of the invention is to reduce the power consumption of prior art in adsorption process, avoid the gac wearing and tearing to cause gold to run off and lose, alleviate labor strength, improve the charcoal absorption rate.
For realizing above purpose, technical scheme of the present invention is: adopt opened type non-fluidization ADSORPTION IN A FIXED BED groove (patent applied for and the mandate of development voluntarily, the patent No. 012225215), this adsorption tank is provided with and is used to put forward the airlift of charcoal string charcoal operation and prevents the active-carbon bed air pine charcoal device that hardens; By utilizing the mine favorable terrain, a plurality of adsorption tanks are reduced step by step from first groove to stern notch be the ladder arranged in series, upper level adsorption tank drain pipe connects next stage adsorption tank liquid-inlet pipe, it is uncovered that next stage adsorption tank airlift is connected to upper level adsorption tank cylindrical shell by pipeline, facing the two-stage adsorption tank discrepancy in elevation mutually is 500-1000mm, the active carbon layer height of each adsorption tank is: first groove 700-900mm, other groove increases 0-300mm step by step by first groove to stern notch order.
For obtaining the ideal adsorption rate, reduce investment outlay simultaneously, adopt 4-6 adsorption tank series connection.
For adapting to different rich solution flow and grade, guarantee adsorption time fully and rationally, adopt 6 adsorption tank series connection, the active carbon layer height of each adsorption tank is: first groove 700-900mm increases 0-200mm step by step from second groove to the, six grooves.Get high limit when absorption flow is big, flow hour is got lower bound, gets high limit when rich solution is of high grade, gets lower bound when grade is low.
Adopt technique scheme, can realize the gravity flow Static Adsorption according to different flow, adsorption liquid evenly rises in each adsorption tank from bottom to top, prevented charcoal bed board knot, help improving adsorption rate, the adsorption process non-power consumption does not produce the gac wearing and tearing, it is convenient that the string charcoal is proposed the charcoal operation, reduced labour intensity.
Four, description of drawings
Fig. 1 is that a plurality of opened type non-fluidization of the present invention ADSORPTION IN A FIXED BED groove connects synoptic diagram.
Five, embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Shown in Figure 1 by selecting the mine favorable terrain, 6 opened type non-fluidization ADSORPTION IN A FIXED BED grooves that are provided with airlift 7-1~6 and air pine charcoal device 1~6 are connected in series by step, reduce step by step from first groove adsorption tank 1 to stern notch adsorption tank 6, face discrepancy in elevation 800mm between two grooves mutually, upper level adsorption tank drain pipe connects next stage adsorption tank liquid-inlet pipe, it is uncovered that the airlift of next stage adsorption tank is connected to upper level adsorption tank cylindrical shell by pipeline, load onto gac in each absorption groove drum, the charcoal bed height is: adsorption tank 1 is 700-900mm, 6 every grade of increase 0-200mm from adsorption tank 2 to adsorption tank, in the actually operating when the rich solution flow is big, active carbon layer height capping value, flow hour takes off limit value, and capping value when rich solution is of high grade is taken off limit value when grade is low.Following embodiment has listed the parameters such as charcoal bed height, adsorption time and adsorption rate of different rich solution flows each adsorption tank corresponding with grade:
Embodiment | Rich solution flow m 3/h | Rich solution grade g/m 3 | Lean solution grade g/m 3 | Each adsorption tank charcoal layer height, mm | Adsorption time minute | Adsorption rate (%) | |||||
1 | 2 | 3 | 4 | 5 | 6 | ||||||
1 | 199 | 0.951 | 0.019 | 900 | 900 | 1100 | 1200 | 1300 | 1500 | 14.7 | 98 |
2 | 189 | 0.925 | 0.035 | 900 | 900 | 1000 | 1100 | 1200 | 1300 | 14.1 | 99 |
3 | 176 | 0.913 | 0.007 | 900 | 900 | 900 | 1000 | 1000 | 1100 | 14.0 | 96 |
4 | 152 | 0,989 | 0.015 | 700 | 900 | 900 | 1000 | 1100 | 1300 | 16.0 | 98 |
During work, from containing of dump leaching field golden rich solution enter rich solution pond 8, rich solution flows out from 8 middle and upper parts, rich solution pond, enter adsorption tank 1, rich solution evenly rises in the adsorption tank of active carbon layer is housed from bottom to top automatically, enters adsorption tank 2,3,4,5,6 successively from the top outflow and adsorbs step by step, and the adsorption process gravity flow is static, enter lean solution pond 9 from becoming lean solution after flow out on adsorption tank 6 tops, lean solution sprays to the dump leaching field through 10 dozens on water pump.
Carry golden charcoal and from adsorption tank 1, propose, carry that the gac of each adsorption tank seals in the upper level adsorption tank by its airlift behind the charcoal, and replenish new gacs at adsorption tank 6 by airlift 7-1.
Claims (3)
1, the gravity flow Static Adsorption method in a kind of heap leaching of gold ores, adopt a plurality of open type non-fluidization ADSORPTION IN A FIXED BED grooves, this adsorption tank is provided with and is used to extract the airlift of carrying golden charcoal and the operation of string charcoal and is used to prevent the active-carbon bed air pine charcoal device that hardens, reduce step by step from first groove to stern notch and to be the stepped appearance arranged in series, upper level adsorption tank drain pipe connects next stage adsorption tank liquid-inlet pipe, and it is uncovered that the airlift of next stage adsorption tank is connected to upper level adsorption tank cylindrical shell by pipeline; It is characterized in that: face mutually that the discrepancy in elevation is 500-1000mm between the two-stage adsorption tank; Groove 700-900mm headed by the active carbon layer height of each adsorption tank, other groove increases 0-300mm successively by first groove to stern notch order.
2, according to the gravity flow Static Adsorption method in the described heap leaching of gold ores of claim 1, it is characterized in that: described a plurality of opened type non-fluidization ADSORPTION IN A FIXED BED grooves are 4-6.
3, according to the gravity flow Static Adsorption method in the described heap leaching of gold ores of claim 2, it is characterized in that described a plurality of opened type non-fluidization ADSORPTION IN A FIXED BED groove is 6, groove 700-900mm headed by the active carbon layer height of adsorption tank, increase 0-200mm step by step from second groove to the, six grooves, get high limit when absorption flow is big, flow hour is got lower bound; Get high limit when rich solution is of high grade, get lower bound when grade is low.
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CNB03111976XA CN1195878C (en) | 2003-03-12 | 2003-03-12 | Gravity flow static adsorption method in gold ore bulk leaching |
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CNB03111976XA CN1195878C (en) | 2003-03-12 | 2003-03-12 | Gravity flow static adsorption method in gold ore bulk leaching |
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CN1195878C true CN1195878C (en) | 2005-04-06 |
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Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN100447094C (en) * | 2006-01-11 | 2008-12-31 | 中国科学院沈阳应用生态研究所 | Multistage gradient adsorption channel adsorption technology |
CN102134651B (en) * | 2011-04-15 | 2012-07-25 | 广西地博矿业集团股份有限公司 | Heap leaching drainage system for large-scale production of low-grade gold oxide ores |
CN109536737B (en) * | 2018-10-22 | 2020-09-29 | 赤峰柴胡栏子黄金矿业有限公司 | Resin ore pulp leaching and adsorbing system and method |
CN114988513A (en) * | 2022-05-05 | 2022-09-02 | 昆明有色冶金设计研究院股份公司 | Box type adsorption and leaching equipment and adsorption and leaching method using same |
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