SU998549A1 - Method for leaching sulfide ores and concentrates - Google Patents
Method for leaching sulfide ores and concentrates Download PDFInfo
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- SU998549A1 SU998549A1 SU813344982A SU3344982A SU998549A1 SU 998549 A1 SU998549 A1 SU 998549A1 SU 813344982 A SU813344982 A SU 813344982A SU 3344982 A SU3344982 A SU 3344982A SU 998549 A1 SU998549 A1 SU 998549A1
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- SU
- USSR - Soviet Union
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- concentrates
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- leaching
- solution
- sulfide ores
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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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Description
Изобретение относитс к гидрометаллургии и может быть использовано в подземном, кучном и чановом выщелачивании .The invention relates to hydrometallurgy and can be used in underground, heap and tub leaching.
Известен способ выщелачивани сульфидных руд и концентратов разбавленной азотной кислотой при нагревании до 80-90°С с продувкой через раствор воздуха Cl3.There is a known method of leaching sulfide ores and concentrates with dilute nitric acid when heated to 80-90 ° C with blowing through a solution of air Cl3.
Недостатком этого способа вл етс то; что он энергоемок и экономически невыгоден в св зи с большими затратами на реагенты и подогрев.The disadvantage of this method is that; that it is energy intensive and economically disadvantageous due to the high costs of reagents and heating.
Наиболее близким к изобретению по технической сувшости и достигаемому результату вл етс способ выщелачивани сульфидных руд и концентратов , включающий подачу выщелачивающего раствора и принудительную аэрацию 2.The closest to the invention in terms of technical efficiency and the achieved result is a method for leaching sulphide ores and concentrates, including the supply of a leach solution and forced aeration 2.
Недостатками известного способа вл ютс низка скорость выщелачивани руд и концентратов, а -также повышенный расход воздуха из-за малого растворени кислорода в растворе .The disadvantages of this method are the low leaching rate of ores and concentrates, as well as the increased air flow rate due to the small dissolution of oxygen in the solution.
Целью изобретени вл етс интенсификаци процесса выщелачивани и его удешевление.The aim of the invention is to intensify the leaching process and reduce its cost.
Поставленна цель достигаетс тем, что согласно способу вквделачивани сульфидных руд и концентратов-, включающему подачу выщелачивак цего раствора и принудительную аэрацию, принудительную аэрацию ведут периодически в течение 1-2 ч через 1-3 ч.This goal is achieved by the fact that according to the method of embedding of sulphide ores and concentrates, which include the supply of leach solution and forced aeration, forced aeration is carried out periodically within 1-2 hours after 1-3 hours.
Сущность способа заключаетс в следук цем. На выщелачивае1 1й объект The essence of the method is to follow. Leachable 1st object
10 подают раствор, одновременно начинают подавать воздух, через 1-2 ч по-, дачу воздуха прекращают. В течение 1-2 ч происходит полное насыщение выщелачивающих растворов кислородом 10 serves the solution, at the same time they begin to supply air, after 1-2 hours, the air supply is stopped. Within 1-2 hours, the leaching solutions are completely saturated with oxygen.
15 воздуха. После прекращени подачи воздуха орошение объекта продолжают. Пауза в подаче воздуха составл ет . 1-3 ч, в течение которых растворенный в растворе кислород расходуетс 15 air. After cessation of the air supply, the object is irrigated. The pause in the air supply is. 1-3 hours, during which oxygen dissolved in the solution is consumed
20 на дыхание бактериальными клетками и на окислительные процессы. По мере потреблени растворенного кислорода цикл аэрации повтор етс .20 for respiration by bacterial cells and for oxidative processes. As dissolved oxygen is consumed, the aeration cycle repeats.
Прерывиста подача воздуха уско25 р ет процесс выщелачивани и снижает энергозатраты на аэрацию. Основные причины этого следующие. Активизируетс жизнеде тельность бактерий, наход щихс в растворе и рудной мас30 се. Увеличиваетс КПД использовани Intermittent air supply speeds up the leaching process and reduces energy consumption for aeration. The main reasons for this are as follows. The viability of the bacteria in the solution and the ore masses is activated. Increases efficiency
-хислорода воздуха: при прерывистой отдаче воздуха раствор насьлцаетс кислородом в течение 1-2 ч до уровн ,,, близкого к пределу его растворимости , причем растворение кислорода в данном случае идет быстро, так как раствор обескислорожен. Затем растворенный кислород расходуетс (сульфидами, бактери ми) - это период паузы 1-3 ч, в течение которой энергозатраты на подачу воздуха исключаютс .- air oxygen: in case of intermittent return of air, the solution is saturated with oxygen within 1-2 hours to a level close to its solubility, and the dissolution of oxygen in this case goes quickly, because the solution is oxygen free. Then dissolved oxygen is consumed (sulphides, bacteria) - this is a pause period of 1-3 hours, during which energy consumption for air supply is eliminated.
В начгше и конце подачи воздуха происходит перепад давлени в рудной массе, что способствует ускорению проникновени раствора и кислорода в руду и изменению ее фильтрационных свойств, а также усилению перемешивани раствора.At the beginning and end of the air supply, a pressure drop occurs in the ore mass, which contributes to accelerating the penetration of the solution and oxygen into the ore and changing its filtration properties, as well as enhancing the mixing of the solution.
Пример. Проводилось выщелаПоказателиExample. Was leased Indicators
чивание сульфидной забалансовой руды в следующих режимах.sulphide off-balance ore in the following modes.
Опыт 1. Естественна аэраци рудной массы, плотность орошени 40 л/т, пауза между орошени ми Зсут, концентраци серной кислоты 1 г/л.Experiment 1. Natural aeration mass, irrigation density 40 l / t, pause between irrigation per hectare, concentration of sulfuric acid 1 g / l.
Опыт 2. Принудительна посто нна подача воздуха в течение 16 ч в сутки в количестве 0,3-0,5 на 1 т руды, остальные параметры такие же, как и в опыте 1.Test 2. Forced air supply is constant for 16 hours per day in an amount of 0.3-0.5 per 1 ton of ore, the other parameters are the same as in experiment 1.
Опыт 3. Принудительна аэраци рудной массы в течение 1-2 ч с паузой 1-3 ч; плотность подачи воздуха така же, как и в опыте 2, а остальные параметры процесса такие же, как и в опыте 1.Experience 3. Forced aeration of the ore mass for 1-2 hours with a pause of 1-3 hours; the density of the air supply is the same as in experiment 2, and the remaining process parameters are the same as in experiment 1.
В таблице показана зависимость извлечени меди и цинка от способа аэрации руды.The table shows the dependence of the extraction of copper and zinc on the method of aeration of ore.
Способ аэрАдииAeradia method
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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SU813344982A SU998549A1 (en) | 1981-10-12 | 1981-10-12 | Method for leaching sulfide ores and concentrates |
Applications Claiming Priority (1)
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SU813344982A SU998549A1 (en) | 1981-10-12 | 1981-10-12 | Method for leaching sulfide ores and concentrates |
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SU998549A1 true SU998549A1 (en) | 1983-02-23 |
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SU813344982A SU998549A1 (en) | 1981-10-12 | 1981-10-12 | Method for leaching sulfide ores and concentrates |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994028184A1 (en) * | 1993-05-25 | 1994-12-08 | Mim Holdings Limited | An integrated bioleach/solvent extraction process for zinc metal production from zinc concentrates |
WO2000029629A1 (en) * | 1998-11-18 | 2000-05-25 | Bactech (Australia) Pty. Ltd. | Bio-oxidation process and apparatus |
US6383458B1 (en) | 1991-07-10 | 2002-05-07 | Newmont Mining Corporation | Biooxidation process for recovery of metal values from sulfur-containing ore materials |
US6482373B1 (en) | 1991-04-12 | 2002-11-19 | Newmont Usa Limited | Process for treating ore having recoverable metal values including arsenic containing components |
US6696283B1 (en) | 1991-07-10 | 2004-02-24 | Newmont Usa Limited | Particulate of sulfur-containing ore materials and heap made therefrom |
-
1981
- 1981-10-12 SU SU813344982A patent/SU998549A1/en active
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6482373B1 (en) | 1991-04-12 | 2002-11-19 | Newmont Usa Limited | Process for treating ore having recoverable metal values including arsenic containing components |
US6383458B1 (en) | 1991-07-10 | 2002-05-07 | Newmont Mining Corporation | Biooxidation process for recovery of metal values from sulfur-containing ore materials |
US6696283B1 (en) | 1991-07-10 | 2004-02-24 | Newmont Usa Limited | Particulate of sulfur-containing ore materials and heap made therefrom |
WO1994028184A1 (en) * | 1993-05-25 | 1994-12-08 | Mim Holdings Limited | An integrated bioleach/solvent extraction process for zinc metal production from zinc concentrates |
WO2000029629A1 (en) * | 1998-11-18 | 2000-05-25 | Bactech (Australia) Pty. Ltd. | Bio-oxidation process and apparatus |
ES2192975A1 (en) * | 1998-11-18 | 2003-10-16 | Bactech Au Pty Ltd | Bio-oxidation process and apparatus |
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