WO2004083468A1 - 硫化鉱石中の硫化鉱物の酸化防止方法 - Google Patents
硫化鉱石中の硫化鉱物の酸化防止方法 Download PDFInfo
- Publication number
- WO2004083468A1 WO2004083468A1 PCT/JP2004/003722 JP2004003722W WO2004083468A1 WO 2004083468 A1 WO2004083468 A1 WO 2004083468A1 JP 2004003722 W JP2004003722 W JP 2004003722W WO 2004083468 A1 WO2004083468 A1 WO 2004083468A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sulfide
- ore
- antioxidant
- sulfide ore
- minerals
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/08—Subsequent treatment of concentrated product
- B03D1/085—Subsequent treatment of concentrated product of the feed, e.g. conditioning, de-sliming
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
- C22B15/0063—Hydrometallurgy
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/16—Extraction of metal compounds from ores or concentrates by wet processes by leaching in organic solutions
- C22B3/1608—Leaching with acyclic or carbocyclic agents
- C22B3/1616—Leaching with acyclic or carbocyclic agents of a single type
- C22B3/165—Leaching with acyclic or carbocyclic agents of a single type with organic acids
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/18—Extraction of metal compounds from ores or concentrates by wet processes with the aid of microorganisms or enzymes, e.g. bacteria or algae
-
- 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
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S423/00—Chemistry of inorganic compounds
- Y10S423/09—Reaction techniques
- Y10S423/17—Microbiological reactions
Definitions
- the present invention relates to a method for preventing sulfide minerals in sulfide ores from being oxidized by the action of bacteria and the like. Prevents deterioration in flotation performance when processing sulfur ore stored in stock piles (stock pi le), and prevents the generation of acidic wastewater containing heavy metal components from sulfide ore at waste dump sites Related to technology. Background Art In nonferrous metal mines, mined sulfide ore is generally stored in an outdoor stockpile, cut into fixed amounts, and processed by flotation.
- low-grade sulfide ore If low-grade sulfide ore must be mined, it is not feasible to treat it at the same time as high-grade sulfide ore, so low-grade sulfide ore is separately deposited on a dedicated stock pile. Is done. This low-grade sulfide ore is processed after the high-grade sulfide ore is excavated, but is often left for several years, during which time the sulfide minerals contained in the sulfide ore are removed. However, it undergoes oxidative deterioration due to the effects of bacteria such as iron-oxidizing bacteria and sulfur-oxidizing bacteria in sulfide ores. '
- the present invention prevents the elution of heavy metal components from sulfide ore by suppressing the oxidation of sulfide minerals in sulfide ore by bacteria, etc., and treats sulfide ore deposited in stock piles. In addition, reduce the drop in flotation performance. It also facilitates the treatment of acid wastewater generated from stock piles and waste pits.
- the present invention provides an antioxidant containing, as a main component, an organic acid containing a lipoxyl group and containing plant polyphenols, in a sulfide ore deposited in a stockpile or a wastestone dump.
- the addition suppresses the oxidation of sulfide minerals in sulfide ores.
- the method for preventing the oxidation of sulphide minerals in sulphide ore according to the present invention comprises the steps of: adding a sulfide ore containing a sulfide mineral to an organic acid containing a lipoxyl group as a main component; It is characterized by adding an antioxidant containing a class of compounds.
- An insoluble film is formed on the surface of the sulfide mineral in the sulfide ore by adding an antioxidant containing an organic acid containing a lipoxyl group as a main component and a vegetable polyphenol.
- Wood vinegar and bamboo vinegar are examples of antioxidants containing an organic acid containing a lipoxyl group as a main component and vegetable polyphenols.
- FIG. 1 is a graph showing the relationship between iron elution rate and elution days.
- FIG. 2 is a graph showing the relationship between the elution rate of copper and the number of days of elution.
- FIG. 3 is a graph showing the relationship between the oxidation-reduction potential of the liquid after passing through the column and the number of days of elution.
- ⁇ FIG. 4 is a graph showing the relationship between the pH of the liquid after passing through the column and the number of days of passing.
- FIG. 5 is a graph showing the relationship between the oxidation-reduction potential of the liquid after passing through the column and the number of days passed.
- FIG. 6 is a graph showing the relationship between the copper concentration of the liquid after passing through the column and the number of days passed.
- antioxidants in parallel with or immediately after depositing sulfide ore including waste rock. If sulfide ore is transported by a conveyor, antioxidants may be added directly on the conveyor. When sulphide ore is transported by dump trucks, it is added from above the sulphide ore deposited at the stock pile waste pit using a widely used dripping pipe such as copper heap leaching. it can.
- the antioxidant to be added is an organic acid containing a strong lipoxyl group such as acetic acid as its main component, so it has a bactericidal and antioxidant action by itself, but polyphenol contained as a secondary component has a strong bactericidal effect. It acts as an antioxidant and lasts for a long time. .
- the organic acid in the antioxidant kills or controls the growth of bacteria on the surface of the sulfide ore, and forms an insoluble film on the surface of the sulfate ore. (Antioxidant film) and covers the surface of the sulfide mineral, thereby suppressing the oxidation reaction of the sulfide mineral by moisture and bacteria.
- polyphenol contained in the antioxidant has a high affinity for sulfide minerals, for example, after the antioxidant is injected, water such as rainwater penetrates from the outside and the main component of the antioxidant This is because, even if it is discharged, an insoluble film (antioxidant film) remains on the surface of the sulfide mineral, and the antioxidant effect is maintained.
- a wood vinegar solution or a bamboo vinegar solution which has a low environmental load since it is made of a natural material, is most suitable. These wood vinegar and bamboo vinegar solutions themselves are not toxic and do not increase the load of wastewater treatment from stock piles or dumping sites.
- "A plot Co., Ltd. Bincho charcoal vinegar” can be used.
- Commercially available wood vinegar and bamboo vinegar can also be used.
- the effect as an antioxidant is affected by the type and amount of polyphenol contained, and it does not matter whether it is wood vinegar or bamboo vinegar.
- commercially available wood vinegar and bamboo vinegar have various compositions depending on the manufacturing method, and therefore, it is desirable to confirm the effects of the vinegar by a preliminary test before use. It is also possible to use the wood vinegar solution and the bamboo vinegar solution alone, or to use both of them at the same time.
- the optimum amount of antioxidant varies greatly depending on the composition of the target sulfurite ore.If the amount is too small, the effect will be insufficient.If the amount is too large, the cost will increase. It is also preferable to determine the value appropriately according to the results of the preliminary test. Usually, it is in the range of 5 to 50 g per kg of sulfide ore. The addition amount is regulated in this range.In the case of general sulfide ore, if the addition amount is less than this range, the antioxidant will not diffuse at a sufficient concentration into the target ore, and the effect is insufficient.
- the addition amount is preferably 30 g or more per 1 kg of sulfide ore in order to more reliably maintain the antioxidant effect over a long period of time. Also, after adding the antioxidant, it is preferable to cure the sulfide ore for 1 day to 2 weeks until it penetrates the entire sulfide ore, so that the antioxidant is prevented from being diluted by moisture penetrating from the outside.
- Low grade copper ore from A mine (A ore: 0.07% Cu, 4.0% Fe, 4.6% S) was used. A ore was air-dried and then ground by a crusher to a total volume of 12.7 mm or less. In order to promote the elution of heavy metals in a short time, the crushed sample contains pyrite concentrate (0.54% Cu, 30.0% Fe, 35.2S) recovered from the ore by flotation as an iron source. ) Was added. In addition, copper concentrate (B copper concentrate: 30.3% Cu, 29.5% Fe, 31.5% S) from the B mine of Chile was mixed to confirm the amount of copper sulfide mineral leaching. .
- the purpose of mixing pyrite and copper sulfide mineral as concentrate is to exclude that the rock covering affects the dissolution rate of each sulfide mineral.
- the mixing ratio was 1250 kg of ore A, 1250 g of pyrite concentrate (789 g in terms of pyrite), and 450 g of copper ore B. Analysis of the prepared simulated samples showed that the grades of iron, copper and sulfur were 1.2%, 7.5% and 8.6%, respectively.
- Example 1 Comparative Example 1, the elution of heavy metals when no wood vinegar solution was added was compared with Example 1.
- the test conditions were the same as in Example 1, except for the conditions described above.
- Figure 1 shows the change over time in the copper elution rate.
- Example 1 when dilute sulfuric acid having a pH of 1.5 was passed through for 150 days, the elution of copper was suppressed to about 6%.
- Comparative Example 1 50% of copper was eluted. From this, it is clear that the addition of the wood vinegar solution is effective in preventing the elution of copper.
- Figure 2 shows the change over time in the elution rate of iron. After a lapse of 150 days, the elution rate of iron in Example 1 was suppressed to 1.8%, whereas the elution rate in Comparative Example 1 was 9.4%, which was about 5 times higher.
- Figure 3 shows the change in the oxidation-reduction potential (Ag / AgCl electrode) of the liquid after passing through the column. In Example 1 in which the wood vinegar solution was added, the oxidation-reduction potential was almost constant, whereas in Comparative Example 1, the potential gradually increased, indicating that oxidation was progressing.
- Figure 4 shows the change over time in the PH of the circulating solution.
- the pH of the solution was 6 or more even after 120 days, but in Comparative Example 2, the pH gradually decreased to fall below PH4 after 120 days.
- Figure 5 shows the change over time in the oxidation-reduction potential (AgZAgCl electrode) of the circulating solution.
- the oxidation-reduction potential gradually increased after inoculation with the iron-oxidizing bacteria.In Example 2, however, the oxidation reduction potential was 40 OmV or less even after 120 days. In Fig. 2, it reached 77 OmV after 98 days and showed a maximum value.
- Figure 6 shows the change over time in the copper concentration of the circulating solution.
- Example 2 a small amount of copper was initially dissolved by the acetic acid contained in the wood vinegar solution, but reprecipitated due to an increase in the solution pH, and was maintained at 1 OmgZl or less after 30 days.
- Comparative Example 2 the copper concentration increased as the number of days passed, and reached 56 mg / 1 after 120 days.
- the actual copper yield of the sample before the column flow test was 87.1%, while the actual copper yield after the force ram flow test was 84.9% in Example 2 and 78.7% in Comparative Example 2. .
- the actual gold yield after the column flow test was 76.9% in Example 2 and 70.1% in Comparative Example 2, whereas the actual gold yield in the sample before the column flow test was 86.3%.
- the antioxidant treatment of the present invention the decrease in the actual copper yield due to water permeation from 8.4% to 2.2% and the decrease in the actual gold yield from 16.2% to 9.4% In each case, we were able to improve.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
- Anti-Oxidant Or Stabilizer Compositions (AREA)
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Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005503749A JP4407634B2 (ja) | 2003-03-19 | 2004-03-19 | 硫化鉱石中の硫化鉱物の酸化防止方法 |
CA2512655A CA2512655C (en) | 2003-03-19 | 2004-03-19 | Anti-oxidation method for sulfide minerals in sulfide ore |
US11/106,351 US7435405B2 (en) | 2003-03-19 | 2005-04-14 | Anti-oxidation method for sulfide minerals in sulfide ore |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-076452 | 2003-03-19 | ||
JP2003076452 | 2003-03-19 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/106,351 Continuation US7435405B2 (en) | 2003-03-19 | 2005-04-14 | Anti-oxidation method for sulfide minerals in sulfide ore |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004083468A1 true WO2004083468A1 (ja) | 2004-09-30 |
Family
ID=33027889
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/003722 WO2004083468A1 (ja) | 2003-03-19 | 2004-03-19 | 硫化鉱石中の硫化鉱物の酸化防止方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7435405B2 (ja) |
JP (1) | JP4407634B2 (ja) |
CA (1) | CA2512655C (ja) |
WO (1) | WO2004083468A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014208504A1 (ja) * | 2013-06-27 | 2014-12-31 | 株式会社神戸製鋼所 | 低硫黄含有鉄鉱石の製造方法 |
WO2019022857A1 (en) * | 2017-07-28 | 2019-01-31 | Dow Global Technologies Llc | USE OF A NON-OXIDIZING BIOCIDE FOR THE SELECTIVE RECOVERY OF PRECIOUS METALS IN A FOAM FLOTATION PROCESS |
Families Citing this family (5)
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PE20211336A1 (es) | 2014-01-31 | 2021-07-26 | Goldcorp Inc | Proceso para la separacion y recuperacion de sulfuros de metales de una mena o concentrado de sulfuros mixtos |
CN107011019A (zh) * | 2017-02-28 | 2017-08-04 | 武汉天颖环境工程股份有限公司 | 一种生物质醋液蔬菜助长剂及其制备方法 |
WO2018189029A1 (en) | 2017-04-13 | 2018-10-18 | Basf Se | Method of inhibiting acid rock drainage |
CN110615711B (zh) * | 2019-09-25 | 2021-09-17 | 正大农业科技(浙江)有限公司 | 一种调节盐碱度的土壤改良剂及其制备方法 |
CN113337287B (zh) * | 2021-08-05 | 2021-11-09 | 北京高能时代环境技术股份有限公司 | 一种用于治理含氯苯酚污染土壤的复合药剂及治理方法 |
Citations (2)
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---|---|---|---|---|
JPH08268823A (ja) * | 1995-03-30 | 1996-10-15 | Hazama Gumi Ltd | 防菌剤 |
JP2000096446A (ja) * | 1998-09-18 | 2000-04-04 | Nippon Full Fashion Kogyo Kk | 繊維加工剤および繊維加工方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08224497A (ja) * | 1995-02-20 | 1996-09-03 | Sumitomo Metal Mining Co Ltd | 非鉄金属有価鉱物の浮遊選鉱方法 |
US6086847A (en) * | 1999-03-22 | 2000-07-11 | University Of Nevada | Process for treating iron-containing sulfide rocks and ores |
US7018605B2 (en) * | 2002-02-25 | 2006-03-28 | Sumitomo Metal Mining Co., Ltd. | Sulfidation reaction control method |
-
2004
- 2004-03-19 WO PCT/JP2004/003722 patent/WO2004083468A1/ja active Application Filing
- 2004-03-19 JP JP2005503749A patent/JP4407634B2/ja not_active Expired - Lifetime
- 2004-03-19 CA CA2512655A patent/CA2512655C/en not_active Expired - Lifetime
-
2005
- 2005-04-14 US US11/106,351 patent/US7435405B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08268823A (ja) * | 1995-03-30 | 1996-10-15 | Hazama Gumi Ltd | 防菌剤 |
JP2000096446A (ja) * | 1998-09-18 | 2000-04-04 | Nippon Full Fashion Kogyo Kk | 繊維加工剤および繊維加工方法 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014208504A1 (ja) * | 2013-06-27 | 2014-12-31 | 株式会社神戸製鋼所 | 低硫黄含有鉄鉱石の製造方法 |
JP2015010246A (ja) * | 2013-06-27 | 2015-01-19 | 株式会社神戸製鋼所 | 低硫黄含有鉄鉱石の製造方法 |
RU2621512C1 (ru) * | 2013-06-27 | 2017-06-06 | Кабусики Кайся Кобе Сейко Се (Кобе Стил, Лтд.) | Способ получения малосернистой железной руды |
US10596578B2 (en) | 2013-06-27 | 2020-03-24 | Kobe Steel, Ltd. | Production method for low-sulfur iron ore |
WO2019022857A1 (en) * | 2017-07-28 | 2019-01-31 | Dow Global Technologies Llc | USE OF A NON-OXIDIZING BIOCIDE FOR THE SELECTIVE RECOVERY OF PRECIOUS METALS IN A FOAM FLOTATION PROCESS |
CN111511473A (zh) * | 2017-07-28 | 2020-08-07 | 美国Ddp特种电子材料公司 | 非氧化杀生物剂用于在泡沫浮选过程中选择性回收有价值的金属的用途 |
Also Published As
Publication number | Publication date |
---|---|
CA2512655C (en) | 2010-09-07 |
JPWO2004083468A1 (ja) | 2006-06-22 |
CA2512655A1 (en) | 2004-09-30 |
JP4407634B2 (ja) | 2010-02-03 |
US20050232835A1 (en) | 2005-10-20 |
US7435405B2 (en) | 2008-10-14 |
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