CN1749421A - Process for extracting platinum metals from ore containing platinum metal - Google Patents
Process for extracting platinum metals from ore containing platinum metal Download PDFInfo
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- CN1749421A CN1749421A CNA2005100193880A CN200510019388A CN1749421A CN 1749421 A CN1749421 A CN 1749421A CN A2005100193880 A CNA2005100193880 A CN A2005100193880A CN 200510019388 A CN200510019388 A CN 200510019388A CN 1749421 A CN1749421 A CN 1749421A
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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
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Abstract
The process of extracting platinum metals from ore containing platinum metals is to extract high purity platinum metals by means of ultrasonic cavitation and great power microwave set with the specific effects of crisping, puncturing, separation, polymerization, etc. The extracting process is closed one including microwave clean, energy saving and efficient treatment and ultrasonic cavitation with instantaneous huge mass transfer and chemical reaction effects.
Description
Technical field
The present invention relates to the smelting technology of precious metal, especially a kind of technology of from the platinum group metallic ore, extracting the platinum metals.
Technical background
Traditional mineral reserve geochemistry theory is thought: platinum-group metal ores is the mineral reserve that form in base, ultrabasic magma stage, it is the product under the high temperature, and the Mineral resources of this class, identified so far at home is can not satisfy pressing for of the national economic development far away, and our country all must spend a large amount of these strategic materials of foreign exchange import every year for this reason.
Over surplus in the of nearly ten year, countless scientific workers' (geology, mineral reserve geology) research, find a kind of series of rocks name for find in " black series of rocks " to contain complete can exploitation and extract the resource of huge economic value, these series of rocks are a kind of organic marine facies fine-grained sediment series of rocks of feature that are that are rich in, be meant from ash to black schistous rocks, silicite, siltstone particularly and accompany the black sand rock of small amount of carbonate layer, the existence of this series of rocks has been guided countless scientific workers into a new theoretical investigation field." earth cryochemistry " that is to say under cold condition, and the chemically reactive of platinum family element is enough to make its considerable scale activatable, migration, enrichment, mineralising, eventually to the huge DEVELOPMENT PROSPECT that has formed these series of rocks, and new platinum metals mineral products resource.At present ten provinces of China have all found " black series of rocks ", and have with several square kilometres of tens meters thick, circumferences.
The existing technology of extracting the platinum metals from the platinum group metallic ore mostly adopts fiery wet method composite technology, and this explained hereafter cycle is long especially, investment is big, equipment is many, extraction yield is low, environmental pollution is serious.
Summary of the invention
Purpose of the present invention just provides that a kind of production cost is low, suitability is wide, extraction yield is high, the technology of extracting the platinum metals from the platinum group metallic ore of non-environmental-pollution.
The technology of extracting the platinum metals from the platinum group metallic ore of the present invention is:
1, raw ore is milled to 100～120 orders, puts into the microwave heating vessel in heating, again will be by mineral aggregate after the microwave processing and H
2SO
4By solid-to-liquid ratio is 1: 4～5 furnishings slurries, the container of putting into band ultrasonic stirring device stirs, thereafter slurry is put into microwave heating vessel in heating 30～45 minutes, and controlled temperature is at 85 ℃～95 ℃, when being cooled to 30～35 ℃ afterwards, get heavy sand through spiral chute, heavy sand is joined slurry through clear water by solid-to-liquid ratio 1: 6～10, suction pressure filter press filtration again, and filter cake just obtains through pretreated washed ore after in small, broken bits;
2, will be made into solid-to-liquid ratio through the washed ore that gives processing and Hcl liquid is 1: 5～6 slurry, slurry is injected the microwave heating vessel in heating, the gas stirring nozzle is installed on the microwave heating container, and when temperature was raised to 85 ℃, thread added the H of 1/8th Hcl amount of liquid
2O
2, and start gas stirring, maintain the temperature between 85 ℃～95 ℃;
3, will be through in the slip suction pressure filter behind the above-mentioned chemical reaction, when press filtration is done soon, the aquae destillata washing of suction equivalent, washing lotion and filtrate are incorporated the expensive liquid of mixing of the chlorine complex acid that obtains the platinum metals together into, after your liquid process superfine filtration the chlorine complex acid of platinum family at this moment mixed, what draw was that your liquid pure limpid platinum family chlorine complex acid mixes;
4, above-mentioned your liquid is added NaOH and NaBro
3Be hydrolyzed, filter out precipitation Me
Low-priced(OH), it is 2～3 that filtrate is transferred pH value with Hcl, places the microwave of sealing to heat among steaming slip device then, when temperature reaches 100 ℃～110 ℃, and the O of generation
sO
4And RuO
4Steam sprays Hcl by in the negative pressure device inspiration absorption tower through earlier, sprays NaOH again, RuO
4With the absorption liquid microwave heating of Hcl reaction, use NH again
4The cl reaction precipitation gets (NH
4)
2Rucl
6, get ruthenium (Ru) powder, O through calcining and hydrogen reduction
sO
4With add KOH again after the NaOH reaction, obtain K
2OsO
4, again through high pressure H
2Reduce the osmium powder;
5, in microwave container, add an amount of Hcl to eliminate former superfluous oxygenant fully through the liquid that steams after slipping, feed SO again
2Restore gold (Au) precipitation of mixing in your liquid, filter out bronze Au;
6, your liquid of reduction behind the golden Au is used H under 70-75 ℃ of microwave temperature control
2O
2Oxidation again with the dialkyl sulfide palladium that comes together, is used the hydrochloric acid back extraction with the organic phase after the phase-splitting with the Hcl washing again, adds ammoniacal liquor simultaneously and obtains palladium salt (NH
4)
2Pdcl
6, this palladium salt can be produced needed palladium black, palladium sponge or palladium powder by common process, and its purity all can reach 99.95%;
7, come together surplus liquid behind the palladium under the situation of 70-75 ℃ of microwave device temperature control, used SO
2Tbp (TBP) collection platinum is used in reduction afterwards, adopts the chemical pure concentrated hydrochloric acid to handle the organic phase after the phase-splitting, uses the aquae destillata back extraction again, adds (NH simultaneously
4) cl gets (NH
4)
2Ptcl
6, this platinum salt can be produced needed platinum black, spongy platinum and platinum powder by common process, and its purity all can reach 99.95%;
8, will the come together surplus liquid of platinum under temperature control 70-7 ℃, is used H in microwave device
2O
2After oxidation Ir becomes Ir (IV),, after the phase-splitting organic phase is obtained Ircl with chemical pure concentrated hydrochloric acid processing with tbp (TBP) collection iridium
6, add (NH again
4) cl, obtain iridium salt (NH
4)
2Ircl
6, this iridium salt can be produced needed sponge iridium or iridium powder by common process, and its purity all can reach 99.95%:
9, last raffinate adds chemical pure Nacl and NaSO under 70-75 ℃ of microwave temperature control
4Obtain precipitation, separate after filtration, after the chlorination, get rhodium salt H again through the carrier hydrolysis
2Rhcl
6, this rhodium salt can be produced needed rhodium black, sponge rhodium or rhodium powder by common process, and its purity all can reach 99.95%.
The technology of extracting the platinum metals from the platinum group metallic ore of the present invention has following characteristics:
1, the preprocessing process of ore, be the ultrasonic wave of utilizing in the acoustic technique fully, after being equipped with suitable technical parameter, cause the perturbation in the ultrasonic cavitation, turbulence, interface and cumulative and the moment high temperature that produces, high pressure, high microjet or the like phenomenon, cause the mass transfer process and the chemical reaction of material that special variation takes place, particularly and microwave (WB) technology controlling suitable parameter well under reductive atmosphere is stirred, ore can be in 30 minutes shortcakeization, heart portion punctures, the isomorph reductive polymerization, element separates removal of impurities and removes the partly base metal element of solubility in the lattice, the whole process of pre-treatment does not have the input of harmful chemicals, does not more have fume emission.
2, pretreated concentrate, carry out the whole soln chloridization process in the device of microwave temperature control:
(Me refers to: Ru, Rh, Pd, Os, Ir, Pt, Au also have Ag etc. in the slag in addition)
It can directly extract completely effectively composes arbitrary the platinum family element that is present in the ore in the platinum family, wherein also comprise the byproduct gold and silver.
As long as be analyzed as follows reaction:
Just obviously draw: the present invention that is to say as long as contain platinum family element in any ore and waste residue or secondary resource the extensive adaptability of material, adopts technology of the present invention successfully all to extract platinum family element.
3, the present invention is a closed circulation at whole leaching process, microwave technology device cleaning, health, efficient energy-saving, and surprising effects such as the material huge mass transfer of moment that the ultrasonic cavitation in the ultrasonic technology produced, chemical reaction, add all to have designed independently separately in the technology to be fit to the omnibearing solvent extraction technology means that own technology and local market supply can be satisfied the demand, make arbitrary link of smelting the platinum metals in the whole technology not pollute generation.
4, in nearly ten of East China at home, south China provinces, a large amount of " black series of rocks " mineral reserve are arranged, produce a large amount of platinum metals, China will very fast country by these strategic materials of shortage be become be the competent country of strategic materials making the present invention be used to.
Embodiment
Raw material is in " black series of rocks " ore one kiloton of " Jinggangshan innovation mining industry development corporation, Ltd. " factory department, the example sampling, optional 5000g makes qualitative and quantitative analysis: they are divided into 50 groups 100-120 purpose ore in sand form, after taking out 10 groups 1000g at random and being divided into 20 groups again, therefrom take out 10 groups, every group is 50g, and the ore in sand form of using one group of 50g adds the H of 1mol/L after microwave oven is handled 10min
2SO
4, again after microwave oven is handled 10min, be cooled to 30 ℃-35 ℃ after, after the elutriation, every group gets: the washed ore of 8.2g, 8.1g, 8.5g, 7.8g, 7.9g, 8.9g, 8.3g, 8.2g, 8.05g, 8.75g weight (dried weight).
10 groups of washed ores of above-mentioned gained are adopted same process, starch with the Hcl furnishing of 8mol/L respectively, be heated to 85 ℃-95 ℃ through microwave oven, when temperature reached 80 ℃, beginning added H lentamente
2O
2, your liquid the chlorine complex acid that reaction obtains 10 groups of platinum families mixes.After 10 groups of your liquid detected by analysis, the result of 10 groups of chemical examination mean values was as follows: (with reference to crossing Jiangxi, Beijing, Yunnan result of laboratory test)
Table 1: multielement chemical analysis results (precious metal g/T, other element %)
Element RU Rh Pd Os Ir Pt Au Ag
Content 2.8 3.2 8 2.1 3.6 4.8 1.28 28
Element of Fe Sio Mn Pb Al
2O
3Cao Mgo
Content 0.48 28.82 1.26 1.8 2.18 6.28 1.28
Result of laboratory test from table 1 finds out that obviously the content of platinum family element in raw ore is bordering on about 30g/T.
Embodiment 1: in the ore of above-mentioned raw materials, optional 2000g is divided into 2 groups, and two groups are milled to 100～120 orders respectively, puts into microwave heating vessel in heating 10min, again with the H of mineral aggregate and 1mol/L
2SO
4By solid-to-liquid ratio is 1: 4～5 furnishings slurries, the container of putting into band ultrasonic stirring device stirs 45min, slurry suction microwave heating vessel in heating 30-45min, temperature is controlled at 85 ℃～95 ℃, when being cooled to 30 ℃～35 ℃ afterwards, joining through clear water and to obtain washed ore after slurry, press filtration are handled, measure after the drying: first group gets 165g washed ore and second group and gets the 168g washed ore.
It is 1: 5 slurry that first group 165g washed ore is made into solid-to-liquid ratio with the Hcl liquid of 8mol/L, and when slurry was warming up to 85 ℃ through microwave, beginning added the H of 45-50ml amount successively
2O
2Temperature control is at 90-95 ℃, heating 25min when being cooled to 30-35 ℃ afterwards, filters and adds the distilled water wash of equivalent, to wash, filtrate merges, obtain the expensive liquid of mixing chlorine complex acid of platinum family, the slag rate is 84.8%, adopts technologies such as reduction, extraction, other cooperates the tax value of the depositing contrast in spectrophotometry detection and the table 1, and total extraction yield of platinum family is about 92.8%.
Embodiment 2: with the 2nd group of same technological operation of pressing embodiment 1, obtain the expensive liquid of mixing chlorine complex acid of platinum family, get slag rate 83.6%, adopt reduction extraction technology, other cooperates spectrophotometer to detect, with contrast in the table 1, total extraction rate reached to 94.8% of platinum family.
Embodiment 3: stack in " the black series of rocks " of a kiloton in factory department, select the 4000g ore and be divided into 2 groups, use the pretreatment process in the technical process respectively for two groups, obtained the good washed ore of pre-treatment of two groups of 2000g: one group is 328g, and another group is 332g.
Hcl and first group of 328g washed ore with 8mol/L are sized mixing, and solid-to-liquid ratio is 1: 4, is warmed up to 85 ℃ with microwave, and beginning adds the H about about 100ml successively
2O
2Be warming up to 95 ℃, and temperature control is in 95 ℃, the 30min postcooling is to 30-35 ℃, filter and add the distilled water wash of equivalent, to wash, filtrate merges, your liquid platinum metals chlorine complex acid mix, the leached mud rate is 84.85%, when adopting technology such as reduction, extraction and being equipped with Spectrophotometric Assays, obtain and table 1 in tax deposit the very near extraction yield of content: 93.8%
The washed ore of another group 332g is operated by aforementioned same process means, just added H successively
2O
2The time with the time lengthening in 95 ℃ of the temperature controls to 45min, filtered liquid adopts superfine vacuum filtration and washing, wash, after filtrate merges, it is 82.8% that the result gets the slag rate, when adopting technology such as reduction, extraction and cooperating spectrophotometer to detect, leach obtain and table 1 in tax deposit the more approaching comprehensive extraction yield 95.8% of contrast.
Embodiment 4: optionally in the kiloton ore that factory department stacks get 10 kilograms of ores and be divided into two groups, 5 kilograms every group, carry out pre-treatment with 5 kilograms every group by technical process respectively after, obtain the concentrate sandstone: one group is 768g, another organizes 782g.At the washed ore furnishing slurry of the Hcl that adopts 8mol/L and first group of 768g, solid-to-liquid ratio is 1: 5, when microwave is warming up to 85 ℃, adds the H of 240ml successively in slurry
2O
2And want temperature control always in 95 ℃, deep reaction naturally cools to 30-35 ℃ and carries out suction filtration to 45min, and with the distilled water wash of equivalent, to wash, after filtrate merges, microwave heating to 70 ℃ again, timeliness 15min, carry out fine vacuum filtration after being cooled to 30-35 ℃, the expensive liquid of mixing chlorine complex acid of platinum family, the slag rate of leaching is 81.8%, is adopting oxidation, reduction, is contrasting extraction yield with the tax storage of table 1 when extracting and being equipped with the spectrophotometer check and more rise to 96.2%.
Second group of 782g washed ore sized mixing the back microwave when being warming up to 85 ℃ with the Hcl of 8mol/L by solid-to-liquid ratio at 1: 5, will add the H that total amount is 260ml successively
2O
2Must temperature control in 95 ℃, after going through the reaction of 45min, allow it be cooled to normal temperature, filter with the vacuum superfine again, filter residue will be used the distilled water wash of equivalent simultaneously, thereafter wash, after filtrate merges, again with this amalgamation liquid microwave hyperthermia to 70 ℃, timeliness 15min, be chilled to 30-35 ℃, refilter with superfine, at last your liquid the bright platinum family chlorine complex acid of clear rut mixes, the slag rate of leaching is 80.2%, obtains under the detection of adopting oxidation, reduction and solvent extraction and cooperation spectrophotometer and comprehensive extraction yield that table 1 contrast is even more ideal: 97.6%.
Embodiment 5: stack in the kiloton ore in factory department, 20 kilograms of ores of random choose are divided into two groups, and each group is all pressed the pre-treatment job in the technology, are washed ore with two groups of each preparation of ore of 10 kilograms, every group of washed ore dry weight that obtains after the pre-treatment is: 1.62 kilograms, and 1.58 kilograms.
Get 1.62 kilograms washed ore and size mixing the back microwave at 1: 5 when being warming up to 85 ℃ by solid-to-liquid ratio, add the H of 500ml successively with the Hcl of 8mol/L
2O
2Behind the timeliness 45min, after be chilled to 30-35 ℃, filter, use the distilled water wash of equivalent simultaneously, will wash, after filtrate merges, your liquid the chlorine complex acid that obtains platinum family mixes, by methods such as oxidation, reduction, extractions and accompany by the mensuration of spectrophotometer to your liquid, the slag rate of leaching is 81.2% again, and the comprehensive extraction yield of platinum family is 96.8%.
Get 1.58 kilograms washed ore, with above-mentioned same art treatment, the expensive liquid of mixing of the platinum family chlorine complex acid that obtains at last, by technologies such as oxidation, reduction, extractions and be equipped with the detection of spectrophotometer to your instrument, the slag rate of leaching is 80.8%, and the comprehensive extraction yield of platinum family element has reached 97.1%.
Embodiment 6: from the ore of a kiloton of factory department, select one group of 50 kilograms of ore at random arbitrarily, pretreatment technology in the adopting process flow process, getting the washed ore dry weight is 7.48 kilograms, Hcl and washed ore with 8mol/L are sized mixing, solid-to-liquid ratio is 1: 5, and the microwave temperature control begins to add gradually the H that total amount is 2500ml when temperature rise to 85 ℃ in 85-95 ℃
2O
295 ℃ of temperature controls are to 45min, be cooled to 30 ℃ of distilled water washs that refilter and add equivalent always, to wash, filtrate merges together, it is cooled under the normal temperature to contain microwave control temperature rise to 70 ℃ following 15min relief, behind the vacuum microfiltration, your liquid the chlorine complex acid that obtains platinum family mixes, by oxidation, reduction, extraction and relevantly produce the salt contrast, the slag rate is 81%, and with the tax of table 1 deposit through convert, the comprehensive extraction yield of platinum family reaches more than 97%.
Claims (4)
1, a kind of technology of from the platinum group metallic ore, extracting the platinum metals, it is characterized in that: it may further comprise the steps:
A, raw ore is milled to 100～120 orders, puts into the microwave heating vessel in heating, again will be by mineral aggregate after the microwave processing and H
2SO
4By solid-to-liquid ratio is 1: 4～5 furnishings slurries, the container of putting into band ultrasonic stirring device stirs, thereafter slurry is put into microwave heating vessel in heating 30～45 minutes, and controlled temperature is at 85 ℃～95 ℃, when being cooled to 30～35 ℃ afterwards, get heavy sand through spiral chute, heavy sand is joined slurry through clear water by solid-to-liquid ratio 1: 6～10, suction pressure filter press filtration again, and filter cake just obtains through pretreated washed ore after in small, broken bits;
B, will to be made into solid-to-liquid ratio through pretreated washed ore and Hcl liquid be 1: 5～6 slurry, and slurry is injected the microwave heating vessel in heating, and when temperature was raised to 85 ℃, thread added the H of 1/8th Hcl amount of liquid
2O
2, and start gas stirring, maintain the temperature between 85～95 ℃;
C, will be through in the slip suction pressure filter behind the above-mentioned chemical reaction, when press filtration is done soon, the distilled water wash of suction equivalent, washing lotion and filtrate are incorporated the expensive liquid of mixing of the chlorine complex acid that obtains the platinum metals together into;
D, above-mentioned your liquid is added NaOH and NaBro
3Be hydrolyzed, filter out precipitation Me
Low-priced(OH), it is 2～3 that filtrate is transferred pH value with Hcl, places the microwave of sealing to heat among steaming slip device then, when temperature reaches 100 ℃～110 ℃, and the OsO of generation
4And RuO
4Steam sprays Hcl by in the negative pressure device inspiration absorption tower through earlier, sprays NaOH again, RuO
4With the absorption liquid microwave heating of Hcl reaction, use NH again
4The cl reaction precipitation gets (NH
4)
2Rucl
6, get ruthenium powder, O through calcining and hydrogen reduction
sO
4With add KOH again after the NaOH reaction, obtain K
2OsO
4, again through high pressure H
2Reduce the osmium powder;
The liquid that e, process are steamed after slipping adds an amount of Hcl to eliminate former superfluous oxygenant fully in microwave container, feed SO again
2Restore gold (Au) precipitation of mixing in your liquid, filter out bronze Au;
F, your liquid of reduction behind the golden Au use H under 70-75 ℃ of microwave temperature control
2O
2Oxidation again with the dialkyl sulfide palladium that comes together, is used the hydrochloric acid back extraction with the organic phase after the phase-splitting with 1mol/L Hcl washing again, adds ammoniacal liquor simultaneously and obtains palladium salt (NH
4)
2Pdcl
6
Surplus liquid behind g, the palladium that came together is used SO under the situation of 70-75 ℃ of microwave device temperature control
2Reduction afterwards with the tbp platinum that comes together, adopts the chemical pure concentrated hydrochloric acid to handle the organic phase after the phase-splitting, uses the aquae destillata back extraction again, adds (NH simultaneously
4) cl gets (NH
4)
2Ptcl
6
The surplus liquid of h, the platinum that will come together under temperature control 70-7 ℃, is used H in microwave device
2O
2After oxidation Ir becomes Ir (IV),, after the phase-splitting organic phase handled with chemical pure concentrated hydrochloric acid and obtain Ircl with the tbp iridium that comes together
6, add (NH again
4) cl, obtain iridium salt (NH
4)
2Ircl
6;
I, last raffinate add chemical pure Nacl and NaSO under 70-75 ℃ of microwave temperature control
4Obtain precipitation, separate after filtration, after the chlorination, get rhodium salt H again through the carrier hydrolysis
2Rhcl
6
2, the technology of extracting the platinum metals from the platinum group metallic ore according to claim 1 is characterized in that: among the step a, and described H
2SO
4Concentration is 1mol/L.
3, the technology of extracting the platinum metals from the platinum group metallic ore according to claim 1, it is characterized in that: among the step b, described Hcl concentration is 8mol/L.
4, the technology of extracting the platinum metals from the platinum group metallic ore according to claim 1, it is characterized in that: among the step b, the concentration of described Hcl is 4mol/L, the concentration 20% of described NaOH.
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|---|---|---|---|
| CNB2005100193880A CN1304612C (en) | 2005-09-01 | 2005-09-01 | Process for extracting platinum metals from ore containing platinum metal |
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|---|---|---|---|
| CNB2005100193880A CN1304612C (en) | 2005-09-01 | 2005-09-01 | Process for extracting platinum metals from ore containing platinum metal |
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| Publication Number | Publication Date |
|---|---|
| CN1749421A true CN1749421A (en) | 2006-03-22 |
| CN1304612C CN1304612C (en) | 2007-03-14 |
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ID=36605076
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|---|---|---|---|
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| CN101509077B (en) * | 2009-02-19 | 2010-08-25 | 昆明贵金属研究所 | Method for extracting platinum, palladium, rhodium from automotive catalyst of ore phase reconstruction |
| CN101985699A (en) * | 2010-12-01 | 2011-03-16 | 金川集团有限公司 | Method for extracting osmium from osmium-containing material |
| CN102125887A (en) * | 2010-10-15 | 2011-07-20 | 韩诗武 | Method for screening and separating copper alloy from copper ore |
| US8252084B2 (en) | 2009-04-15 | 2012-08-28 | Phoenix Environmental Reclamation | Separator and crusher of minerals with microwave energy and method thereof |
| CN102947472A (en) * | 2010-06-01 | 2013-02-27 | 沃尔德马尔斯·贝拉科夫斯 | Method for recovering noble metals and other byproducts from ore |
| CN104004921A (en) * | 2014-05-31 | 2014-08-27 | 北京工业大学 | Process for efficiently enriching and recovering precious metals platinum and palladium by using solvent extraction method |
| CN105181783A (en) * | 2015-10-10 | 2015-12-23 | 河南省岩石矿物测试中心 | Platinum-palladium metallographic analysis method in dolomite and quartzite type platinum group ore deposit |
| CN106086454A (en) * | 2016-08-12 | 2016-11-09 | 陈永福 | A kind of technique being enriched with platinum group metal and gold |
| CN110684905A (en) * | 2019-11-29 | 2020-01-14 | 西安凯立新材料股份有限公司 | Method for leaching metal platinum in platinum alumina catalyst by wet method |
| CN115259248A (en) * | 2022-08-11 | 2022-11-01 | 云南弘盛铂业新材料科技有限公司 | Preparation process of potassium osmate |
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| AUPS167402A0 (en) * | 2002-04-11 | 2002-05-16 | Platinum Australia Limited | Method for extracting pgms |
| JP4144311B2 (en) * | 2002-10-08 | 2008-09-03 | 住友金属鉱山株式会社 | Methods for separating and recovering platinum group elements |
| CN1328398C (en) * | 2004-06-26 | 2007-07-25 | 昆明贵金属研究所 | Method for extracting platinum-palladium and base metal from platinum metal sulphide ore |
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- 2005-09-01 CN CNB2005100193880A patent/CN1304612C/en not_active Expired - Fee Related
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| CN101509077B (en) * | 2009-02-19 | 2010-08-25 | 昆明贵金属研究所 | Method for extracting platinum, palladium, rhodium from automotive catalyst of ore phase reconstruction |
| US8490904B2 (en) | 2009-04-15 | 2013-07-23 | Phoenix Environmental Reclamation | System and method for recovering minerals |
| US8252084B2 (en) | 2009-04-15 | 2012-08-28 | Phoenix Environmental Reclamation | Separator and crusher of minerals with microwave energy and method thereof |
| US8267335B2 (en) | 2009-04-15 | 2012-09-18 | Phoenix Environmental Reclamation | Ultrasonic crushing apparatus and method |
| CN102947472A (en) * | 2010-06-01 | 2013-02-27 | 沃尔德马尔斯·贝拉科夫斯 | Method for recovering noble metals and other byproducts from ore |
| CN102125887A (en) * | 2010-10-15 | 2011-07-20 | 韩诗武 | Method for screening and separating copper alloy from copper ore |
| CN101985699A (en) * | 2010-12-01 | 2011-03-16 | 金川集团有限公司 | Method for extracting osmium from osmium-containing material |
| CN104004921A (en) * | 2014-05-31 | 2014-08-27 | 北京工业大学 | Process for efficiently enriching and recovering precious metals platinum and palladium by using solvent extraction method |
| CN105181783A (en) * | 2015-10-10 | 2015-12-23 | 河南省岩石矿物测试中心 | Platinum-palladium metallographic analysis method in dolomite and quartzite type platinum group ore deposit |
| CN105181783B (en) * | 2015-10-10 | 2018-12-21 | 河南省岩石矿物测试中心 | Platinum-palladium metallographic analysis method in dolomite and quartzite type platinum group ore deposit |
| CN106086454A (en) * | 2016-08-12 | 2016-11-09 | 陈永福 | A kind of technique being enriched with platinum group metal and gold |
| CN110684905A (en) * | 2019-11-29 | 2020-01-14 | 西安凯立新材料股份有限公司 | Method for leaching metal platinum in platinum alumina catalyst by wet method |
| CN115259248A (en) * | 2022-08-11 | 2022-11-01 | 云南弘盛铂业新材料科技有限公司 | Preparation process of potassium osmate |
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| CN1304612C (en) | 2007-03-14 |
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