WO2000017406A2 - Procede d'extraction de plomb dans des matieres premieres contenant du plomb - Google Patents
Procede d'extraction de plomb dans des matieres premieres contenant du plomb Download PDFInfo
- Publication number
- WO2000017406A2 WO2000017406A2 PCT/RU1999/000335 RU9900335W WO0017406A2 WO 2000017406 A2 WO2000017406 A2 WO 2000017406A2 RU 9900335 W RU9900335 W RU 9900335W WO 0017406 A2 WO0017406 A2 WO 0017406A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lead
- potassium
- κaliya
- potassium hydroxide
- solution
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000002994 raw material Substances 0.000 title claims abstract description 5
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims abstract description 28
- 239000000725 suspension Substances 0.000 claims abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000010949 copper Substances 0.000 claims abstract description 6
- 229910052802 copper Inorganic materials 0.000 claims abstract description 6
- 238000002386 leaching Methods 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 7
- 239000007791 liquid phase Substances 0.000 claims description 7
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 5
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 239000011591 potassium Substances 0.000 claims description 5
- 229910052700 potassium Inorganic materials 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000012071 phase Substances 0.000 claims description 3
- 150000004678 hydrides Chemical class 0.000 claims description 2
- 238000005275 alloying Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000002844 melting Methods 0.000 claims 1
- 230000008018 melting Effects 0.000 claims 1
- 230000008929 regeneration Effects 0.000 claims 1
- 238000011069 regeneration method Methods 0.000 claims 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract description 7
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 abstract description 7
- 229910052939 potassium sulfate Inorganic materials 0.000 abstract description 7
- 235000011151 potassium sulphates Nutrition 0.000 abstract description 7
- 239000000243 solution Substances 0.000 abstract description 5
- 238000000605 extraction Methods 0.000 abstract description 4
- 239000007787 solid Substances 0.000 abstract description 4
- 239000007864 aqueous solution Substances 0.000 abstract description 3
- 239000013078 crystal Substances 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 2
- 238000002425 crystallisation Methods 0.000 abstract description 2
- 239000011701 zinc Substances 0.000 abstract description 2
- 229910052725 zinc Inorganic materials 0.000 abstract description 2
- 239000001120 potassium sulphate Substances 0.000 abstract 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 abstract 2
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical class [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 239000010413 mother solution Substances 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 229910000027 potassium carbonate Inorganic materials 0.000 abstract 1
- 239000008237 rinsing water Substances 0.000 abstract 1
- 239000012047 saturated solution Substances 0.000 abstract 1
- 239000001117 sulphuric acid Substances 0.000 abstract 1
- 235000011149 sulphuric acid Nutrition 0.000 abstract 1
- 239000010878 waste rock Substances 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 229910021653 sulphate ion Inorganic materials 0.000 description 6
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 5
- 239000011575 calcium Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052979 sodium sulfide Inorganic materials 0.000 description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 4
- 229910052791 calcium Inorganic materials 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- -1 ferrous metals Chemical class 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- XCAUINMIESBTBL-UHFFFAOYSA-N lead(ii) sulfide Chemical compound [Pb]=S XCAUINMIESBTBL-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
- C22B7/008—Wet processes by an alkaline or ammoniacal leaching
-
- 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
- C22B13/00—Obtaining lead
- C22B13/02—Obtaining lead by dry processes
-
- 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
- C22B13/00—Obtaining lead
- C22B13/04—Obtaining lead by wet processes
-
- 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
Definitions
- the invention relates to non-ferrous metals, in particular, to the method of extracting lead from lead-containing raw materials.
- the indicated method of extracting lead from lead concentrate is very expensive due to the inadequate increase of the profitability of the ⁇ aib ⁇ lee bliz ⁇ im ⁇ ⁇ e ⁇ niches ⁇ y suschn ⁇ s ⁇ i yavlyae ⁇ sya s ⁇ s ⁇ b ( ⁇ , ⁇ , 0588235), in order to reduce ⁇ m za ⁇ a ⁇ on ⁇ egene ⁇ atsiyu gid ⁇ sida ⁇ lav ⁇ u s ⁇ svints ⁇ vym ⁇ ntsen ⁇ a ⁇ m vedu ⁇ in ⁇ isli ⁇ elny ⁇ usl ⁇ viya ⁇ , ⁇ duvaya v ⁇ zdu ⁇ che ⁇ ez ⁇ as ⁇ lav, ⁇ i e ⁇ m in ⁇ as ⁇ lave ⁇ b ⁇ azue ⁇ sya ⁇ eimusches ⁇ venn ⁇ sul ⁇ a ⁇ na ⁇ iya.
- the process is reacting:
- metal lead separates the alloy, which directly contains excess hydroxide, sodium sulfide, zinc sulfide and sodium hydroxide.
- the suspension is filtered and obtained by a basic aqueous solution, which is contained, in the main. hydrated hydroxide and solid garden.
- the reactive hydroxide discharges the sodium vapor, and the resulting hydroxide melt discharges into the reaction zone.
- ⁇ ve ⁇ dy ⁇ sad ⁇ ⁇ dve ⁇ gayu ⁇ ⁇ e ⁇ atsii v ⁇ g ⁇ v ⁇ dn ⁇ g ⁇ v ⁇ tselachivaniya and ⁇ luchayu ⁇ sus ⁇ enziyu, ⁇ uyu ⁇ il ⁇ uyu ⁇ and ⁇ luchayu ⁇ ⁇ e ⁇ , ⁇ eds ⁇ avlyayuschy s ⁇ b ⁇ y ⁇ ve ⁇ dye chas ⁇ itsy sul ⁇ id ⁇ v tsin ⁇ a, copper and iron and ⁇ us ⁇ y ⁇ dy with ads ⁇ bi ⁇ vannym on i ⁇ ⁇ ve ⁇ n ⁇ s ⁇ i ⁇ as ⁇ v ⁇ m sulfonic
- the aforementioned product is electrically processed and processed, and the sulfuric acid is released from the process and is clicked on, and the appliance is operated on. After washing and receiving the solution of the sulphate of the country, it is transferred to the operation of the leaching process.
- P ⁇ s ⁇ avlennaya task ⁇ eshae ⁇ sya ⁇ em, ch ⁇ s ⁇ s ⁇ be in lead extraction from svinetss ⁇ de ⁇ zhascheg ⁇ s ⁇ ya, s ⁇ de ⁇ zhascheg ⁇ lead sul ⁇ idy, tsin ⁇ a, copper, iron and ⁇ us ⁇ uyu ⁇ du, v ⁇ lyuchayuschem ⁇ lav ⁇ u svints ⁇ v ⁇ g ⁇ ⁇ ntsen ⁇ a ⁇ a gid ⁇ sid ⁇ m with alkaline l ⁇ chn ⁇ g ⁇ me ⁇ alla ⁇ i ⁇ em ⁇ e ⁇ a ⁇ u ⁇ e 600 - 700 ° C ⁇ isu ⁇ s ⁇ vii ⁇ isli ⁇ elya, ⁇ dele- of me ⁇ alliches ⁇ g ⁇ lead ⁇ schel ⁇ chn ⁇ g ⁇ ⁇ as ⁇ lava and vyv ⁇ d lead from ⁇ ea ⁇ tsi ⁇ n
- the rate of filtration of the water treatment unit is 25–30%; it is equal to 0,01 m 3 / m 2 • hour, and potassium hydroxide (50 - 52%) is 0, 3 m 3 / m : - hour, and Respectively, at 30 times the area of filtration.
- Disasters (pulp) of the Ministry of Internal Affairs are not filtered out (50 - 52%).
- ⁇ and the generation ⁇ 6 - 8 (for example 1, 0 - 1, 1) the sum of all the above listed impurities does not exceed 0, 001 - 0, 0005 mg / dm 3 .
- the yield of the gvdruxide kalida on the smelter is 0, 7 - 1, 25 of the weight of the percentage.
- the alloy promotes the first stage of the water treatment in combination with the liquid phase phase (1.1, -1, 0): 1, 0.
- the resulting suspension containing ⁇ , ⁇ 2 8 ⁇ 4 , ⁇ 2 ⁇ 3 and empty, is filtered.
- Zhid ⁇ aya ⁇ aza s ⁇ de ⁇ zhi ⁇ in ⁇ sn ⁇ vn ⁇ m, gid ⁇ sid ⁇ aliya ⁇ ntsen ⁇ atsiey with 50 - 52%, and in ⁇ ve ⁇ duyu ⁇ azu ⁇ e ⁇ e ⁇ dya ⁇ s ⁇ de ⁇ z haschie not lead ⁇ s ⁇ a ⁇ i ⁇ ntsen ⁇ a ⁇ a, and sul ⁇ a ⁇ ⁇ a ⁇ b ⁇ na ⁇ ⁇ aliya, ⁇ s ⁇ a ⁇ i schel ⁇ chn ⁇ g ⁇ ⁇ as ⁇ v ⁇ a, za- ⁇ vachennye ⁇ sad ⁇ m.
- ⁇ delennaya ⁇ ⁇ as ⁇ v ⁇ a gvd ⁇ sida ⁇ aliya ⁇ ve ⁇ daya ⁇ aza ⁇ d- ve ⁇ gae ⁇ sya ⁇ myv ⁇ e on ⁇ il ⁇ e ⁇ gid ⁇ sida ⁇ aliya, ⁇ i e ⁇ m ⁇ myvn ⁇ y ⁇ as ⁇ v ⁇ na ⁇ avlyayu ⁇ leaching is ⁇ dn ⁇ g ⁇ schel ⁇ chn ⁇ g ⁇ ⁇ as ⁇ lava and ⁇ ve ⁇ dy ⁇ my- ⁇ y ⁇ s ⁇ a ⁇ na ⁇ avlyayu ⁇ on v ⁇ uyu s ⁇ adiyu leaching.
- a large-scale recovery of sulphate is used. Leaching is carried out at a temperature of 80 - 90 ° C in order to create conditions for the maximum possible saturation of the potassium sulfate solution. After the dissolution of all the components, in the main, the sulphate and the potassium hydroxide, in the suspension add sulfuric acid in the amount of - 8. At the same time, the entire potassium chloride is sold in the potassium sulfate, and a number of other potassium, tobacco, zinc, lead, and mineral are excreted.
- Suspension Filt- It rinses out of the liquid phase in a known manner, such as cooling and crystallization, consumes a potassium sulfate, which is a valuable product, and is discharged.
- the lower and upper borders ⁇ distribute the increase in the volume of the specified mixed substances in al
- FIG. 1 An indicative flow chart of the proposed method for recovering lead from lead-containing material is shown in FIG. All of the potassium hydroxide excreted from the process in the VVD is equivalent to the quantity of sulfate and calcium, the amount of calcium is compensated by a 50% reduction in the concentration of calcium. This product is combined with the waste from the first stage of leaching of the alkaline melt and is fed to the extraction.
- the intentional use of the invention may be used to extract lead from lead-containing raw materials derived from lead sulphide.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
Abstract
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU60124/99A AU6012499A (en) | 1998-09-23 | 1999-09-14 | Method for extracting lead from lead-containing raw materials |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU98117450 | 1998-09-23 | ||
RU98117450A RU2131474C1 (ru) | 1998-09-23 | 1998-09-23 | Способ извлечения свинца из свинецсодержащего сырья |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2000017406A2 true WO2000017406A2 (fr) | 2000-03-30 |
WO2000017406A3 WO2000017406A3 (fr) | 2000-05-25 |
Family
ID=20210609
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/RU1999/000335 WO2000017406A2 (fr) | 1998-09-23 | 1999-09-14 | Procede d'extraction de plomb dans des matieres premieres contenant du plomb |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU6012499A (fr) |
RU (1) | RU2131474C1 (fr) |
WO (1) | WO2000017406A2 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105907986B (zh) * | 2016-06-29 | 2018-08-14 | 江西铜业集团公司 | 一种分银渣中铅的提取方法 |
CN112501451B (zh) * | 2020-11-13 | 2022-09-13 | 桐乡市思远环保科技有限公司 | 一种采用溶剂萃取电积工艺生产金属铅的方法 |
CN113061736B (zh) * | 2021-03-30 | 2022-03-22 | 攀钢集团攀枝花钢铁研究院有限公司 | 烧结机头灰中钾、铅、铁的分离方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4164416A (en) * | 1976-12-20 | 1979-08-14 | Rockwell International Corporation | Metal recovery process |
SU1486532A1 (ru) * | 1987-08-18 | 1989-06-15 | Gnii Tsvetnykh Metallov | Способ переработки свинецсодёржащих сульфидных концентратов |
SU1523581A1 (ru) * | 1988-04-22 | 1989-11-23 | Государственный научно-исследовательский институт цветных металлов | Способ переработки сульфидных свинцовых концентратов |
US5356455A (en) * | 1992-09-14 | 1994-10-18 | Nikolai Vladimirovich Khodov | Process for recovering lead from lead-containing raw materials |
-
1998
- 1998-09-23 RU RU98117450A patent/RU2131474C1/ru active
-
1999
- 1999-09-14 AU AU60124/99A patent/AU6012499A/en not_active Abandoned
- 1999-09-14 WO PCT/RU1999/000335 patent/WO2000017406A2/fr active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4164416A (en) * | 1976-12-20 | 1979-08-14 | Rockwell International Corporation | Metal recovery process |
SU1486532A1 (ru) * | 1987-08-18 | 1989-06-15 | Gnii Tsvetnykh Metallov | Способ переработки свинецсодёржащих сульфидных концентратов |
SU1523581A1 (ru) * | 1988-04-22 | 1989-11-23 | Государственный научно-исследовательский институт цветных металлов | Способ переработки сульфидных свинцовых концентратов |
US5356455A (en) * | 1992-09-14 | 1994-10-18 | Nikolai Vladimirovich Khodov | Process for recovering lead from lead-containing raw materials |
Also Published As
Publication number | Publication date |
---|---|
RU2131474C1 (ru) | 1999-06-10 |
AU6012499A (en) | 2000-04-10 |
WO2000017406A3 (fr) | 2000-05-25 |
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