CN106086454A - A kind of technique being enriched with platinum group metal and gold - Google Patents

A kind of technique being enriched with platinum group metal and gold Download PDF

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CN106086454A
CN106086454A CN201610665595.1A CN201610665595A CN106086454A CN 106086454 A CN106086454 A CN 106086454A CN 201610665595 A CN201610665595 A CN 201610665595A CN 106086454 A CN106086454 A CN 106086454A
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陈永福
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    • 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
    • C22B11/00—Obtaining noble metals
    • C22B11/06—Chloridising
    • 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
    • C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
    • 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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Abstract

The present invention relates to a kind of technique being enriched with platinum group metal and gold, comprise the following steps: it is standby that (1) pulverizing raw material containing platinum group metal and gold obtains powder；(2) powder is added in hydrochloric acid and carry out being acidified and filtering waste liquid, obtain reaction mass；(3) obtain mixed material by uniform with alkali metal chloride, sulphuric acid and mixed in hydrochloric acid for reaction mass, mixed material is heated to 60 90 DEG C of reaction 30 35min, after cooling, filters thick slag, obtain platinum group metal and the enrichment solution of gold.It is few that the present invention is enriched with the time used by platinum group metal, cycle is short, in obtained solution, the platinum content in platinum group metal can reach 1 4g/L, the whole preparation process of the present invention is without ore dressing, pyrolytic semlting and pressurized acid leaching, instead of traditional cyanide metallurgical, improve production capacity, effectively reduce the environmental pollution caused in smelting process.

Description

A kind of technique being enriched with platinum group metal and gold
Technical field
The invention belongs to precious metal smelting field, be specifically related to a kind of technique being enriched with platinum group metal and gold.
Background technology
Platinum group metal belongs to noble metal, is the less metal of total resources in all metals of containing of the earth's crust, and its distribution is very Unbalanced, China's Platinum metals resources is poor, and the 0.2% of Jin Zhan world gross reserves, platinum group metal has other metals not because of it Analogous, excellent physical chemistry overall characteristic, the most constant bright and new beautiful color, the service life of lasting stability and length Phase storage is not devalued, unique biological activity and catalysis activity, it has also become a class is irreplaceable, be widely used in human lives Particulate metal of every field.
Platinum group metal is as " the first high-technology metal ", and its production development has the following characteristics that 1, South Africa and Russia produce Amount total accounts for the 94% of Gross World Product, forms absolute monopoly position；2, platinum family gold in the mineral intergrowth of Canadian and Chinese Jinchuan Belong to grade low；3, the content that contained in Primary Pt mineral and mineral intergrowth secondary platinum group metal osmium, iridium, ruthenium, rhodium reclaim comprehensively accounts for platinum The 10% of race's metal total output；4, because in resource set and the monopolization that continues for a long time of multinational capital controls, its concentration of production is in minority Company, the refine of platinum group metal, the world also concentrates on minority refinery, such as Japan's Tanaka, refine of De Li and Shi Fu company Factory, they carry out refine again with the flint clay resource in area under one's jurisdiction, existing Zibo and extract platinum group metal, guard know-how simultaneously, control to supply Needing and price robs Chinese resource, with current data rough estimate, above-mentioned three companies are accumulative to extract more than kiloton, and burnt precious Containing this phenomenon of platinum group metal the most not by known to compatriots in stone, more nobody carries out enrichment and refines this, causes China Precious Metals Resources run off the most in a large number every year.
The enrichment method of platinum group metal is closely related with selected raw material, such as noble metal grade in South Africa copper nickel high-sulfur Height, in smelting for the purpose of effective enriching and recovering noble metal, makes every effort to high and low metal separation process short, and efficiency is high, as early as possible with height The response rate extracts high-grade noble metal concentrate；And China Jinchuan and Canadian copper nickel high-sulfur in noble metal grade low, then with The output of economical and efficient has the high-quality of the market competitiveness, multi items nickel, copper, cobalt product are main purpose, current domestic master Using two sections of cyanidings to extract noble metal concentrate, this technological process is the longest, and the metallurgical process of needs is many, and technical difficulty is big, and Serious environmental pollution is caused during extraction.
Summary of the invention
In view of this, it is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of enrichment platinum group metal and gold Technique, this technique enrichment the platinum group metal cycle short, enrichment before without ore dressing, enrichment process can realize without High Temperature High Pressure The enrichment of platinum group metal.
For realizing object above, the present invention adopts the following technical scheme that
A kind of technique being enriched with platinum group metal and gold, comprises the following steps:
(1) will be powder containing platinum group metal and golden raw material pulverizing；
(2) described powder being added molar concentration is to be acidified in 1-4mol/L hydrochloric acid, filters after acidifying, removes filter Liquid, obtains reaction mass；
(3) in described reaction mass, it is sequentially added into alkali metal chloride, sulfuric acid solution and hydrochloric acid solution mix homogeneously to obtain Mixed material, is heated to described mixed material 60-90 DEG C of reaction 30-35min, filters afterwards, remove filtering residue, and gained solution is Platinum group metal and the enrichment solution of gold.
The present invention carries out chlorination reaction to raw material, and its reaction mechanism is for when by H2SO4Acid system acidity with HCl composition More than 1mol/L, Cl-When reaction density is between 1-120g/L, platinum group metal is containing SO4 2-And Cl-In the environment of there is spy Different physical property and chemical property, can be by H2SO4With HCl composition acid system in Cl-Reaction generates more stable chlorine Complex anion, reduces the oxidizing potential of platinum group metal, i.e. reduces pressure and the temperature of oxidation dissolution, can enter at normal temperatures and pressures Row chemical reaction, it is achieved gas-liquid-solid three-state reacts, thus realizes dissolving and the enrichment of platinum group metal.
Preferably: the fineness of powder described in step (1) is more than 200 mesh.
The purpose that raw material containing platinum group metal and gold is carried out pulverize is to make it easier to react with reactant liquor, making Obtain platinum group metal be prone to enrichment and refine.
Preferably: described in step (1), the raw material containing platinum group metal and gold is flint clay.
When the present invention is flint clay containing platinum group metal and golden raw material, the flint clay material after enriched extraction Waste residue, still has preferable fire resistance, does not affect the raw material use at fire resisting material field.
Flint clay, a kind of high-quality hard fire clay of Shandong Province of China province Zibo area output.The flint clay raw ore of standard Al2O3Content 38%, Al after calcining2O3Content is about 44%, Fe2O3< 2%, stable components, homogeneous, compact structure, disconnected Face is conchoidal, white, is used for producing tonerde fire resistant materials.We are generally referred to as ripe flint clay by described flint clay (CALCINED CLAY).The composition of ripe flint clay is more complicated with composition, without fixed structure and composition.Ripe flint clay in water not Easily dispersion, plasticity is relatively low.The ripe flint clay that China is currently known mostly is the sedimentary clay of kaolinite Within Monominerals type, or also have Dickite or hydromica class mineral association.There is Shandong in the main place of production, especially preferable with Shan Dongwang village one band quality, its flint clay whiteness Good with luminosity, and be magnetic.
Preferably: powder described in step (2) is 1:2-5 with the mass ratio of described hydrochloric acid solution.
For purified feed stock, first carry out powder being acidified to remove SiO2, when the mass ratio of powder Yu described hydrochloric acid is 1: During 2-5, impurity-eliminating effect is preferable, and now hydrochloric acid consumption is less, does not results in waste.
Preferably: described in step (3), the molar concentration of hydrochloric acid solution is 1-4mol/L, described sulfuric acid solution is by quality Mark be the concentrated sulphuric acid of 98% with water by the mass ratio mixing gained of 0.9-1.1:1.
Further: reaction mass, alkali metal chloride, sulfuric acid solution, the mass ratio of hydrochloric acid solution described in step (3) For 4.5-5.5:1:4.5-16.5:31.5-49.5.
When reaction mass with the reactant liquor being made up of alkali metal chloride, sulphuric acid, hydrochloric acid with aforementioned proportion hybrid reaction time, By H2SO4It is more than 1mol/L, Cl with the acid system acidity of HCl composition-Reaction density between 1-120g/L, platinum group metal Can be by H2SO4With HCl composition acid system in Cl-Reaction generates more stable chlorine complex anion, reduces platinum group metal Oxidizing potential, i.e. reduces pressure and the temperature of oxidation dissolution, thus realizes dissolving and the enrichment of platinum group metal.
Additionally platinum group metal is containing SO4 2-And Cl-In the environment of there is special physical property and chemical property, often Chemical reaction can be carried out, it is achieved gas-liquid-solid three-state reacts under normal temperature and pressure.It should be noted that and need in course of reaction sternly Lattice control the climbing speed of temperature, if speed is too high, gas and liquid can be excessive, cause the loss of platinum group metal.
Alkali metal refers to six metallic elements of group ia in the periodic table of elements: lithium, sodium, potassium, rubidium, caesium, francium.Alkali metal Mostly being argenteous metal (caesium is golden colour lustre), density is little, and fusing point and boiling point all ratios are relatively low, has the highest under the status of criterion Reactivity；They easily lose valency electron and form the cation of band+1 electric charge；They quality are soft, can cut with cutter, expose silver The tangent plane of white；Due to the oxygen reaction in air, tangent plane the most just tarnishes.In nature, alkali metal is only at salt Middle discovery, never exists with simple substance form.Alkali metal can occur fierce reaction with water, generates alkaline hydroxide, And it is the strongest to increase respond with relative atomic mass.All alkali metal having been found that are present in nature.According to chemistry Elemental abundance order, what abundance was the highest is sodium, next to that potassium, followed by lithium, rubidium, caesium, is finally francium.
Further: after described in step (3), reaction terminates, alkali metal chloride the temperature at 60-90 DEG C are again added After degree lower reaction 30-35min, then carry out described cooling, filtration, the described alkali metal chloride that again in which is added with described instead The mass ratio answering material is 1:4.5-5.5.
The enrichment process of the present invention, can be able to be carried out to make platinum group metal be enriched with completely as workshop section's repetitive operation Repeatedly add alkali metal chloride to extract, usual repetitive operation twice, the enrichment extraction ratio of more than 98% can be realized.
Preferably: described in step (3), alkali metal chloride is sodium chloride and/or potassium chloride, when for sodium chloride and chlorination During potassium, the two mixes in any proportion, preferred sodium chloride in the present invention, because in the experimentation of the present invention, and inventor's warp Test of many times finds when alkali metal chloride is sodium chloride, and its extraction ratio is higher, and is other alkali gold in addition to sodium chloride During genus, extraction ratio time only alkali metal chloride is sodium chloride 30%.
Preferably: the course of reaction described in step (3) is added light radiation.
Inventor finds in experimentation, uses light source to irradiate concerted reaction than directly unglazed during heating Firing equipment under the reacting by heating speed that carries out add 10-12 times, be effectively shortened the response time.
In sum, The present invention gives platinum group metal and Au plasma technique, use this technique to carry out platinum group metal The enrichment time used is few, and the cycle is short, and in obtained solution, in platinum group metal, the content of platinum reaches 1-4g/L, and the present invention is water-soluble Chlorination processes method, in whole preparation process without ore dressing, it is not necessary to pyrolytic semlting, it is not necessary to pressurized acid leaching, instead of traditional cyanide Metallurgy, improves production capacity, it is to avoid " catching up with nitre to operate ", effectively reduces the environmental pollution caused in smelting process, and And when raw materials used for flint clay time, not only can promote the added value of flint clay, make compatriots recognize the new application of flint clay, for The precious metal smelting cause of motherland is done one's bit, and the waste residue behind extracted platinum group metal still can serve as quality refractory material Material, industrial output value is high.
Detailed description of the invention
Below by 4 specific embodiments, technical scheme is described in further detail, in the present invention In, if not refering in particular to, all of part, percentage ratio are unit of weight, all of equipment and raw material etc. be all commercially available or The industry is commonly used.Method in following embodiment, if no special instructions, is the conventional method of this area.
Embodiment 1
The invention provides a kind of technique being enriched with platinum group metal and gold, comprise the following steps:
(1) taking ripe flint clay raw material, being crushed into fineness is that 200 purpose ripe flint clay powder is standby；
(2) concentrated sulphuric acid that mass fraction is 98% is obtained sulfuric acid solution by the quality of 0.9:1 than mix and blend with water, take Molar concentration is that the hydrochloric acid solution of 1mol/L is standby；
(3) described ripe flint clay powder is acidified by the mass ratio of 1:2 with hydrochloric acid solution, after acidifying, filters waste liquid, Obtain reaction mass；
(4) described reaction mass and sodium chloride, sulfuric acid solution and hydrochloric acid solution are pressed the mass ratio of 4.5:1:4.5:31.5 Carry out mixing to obtain mixed material, described mixed material is heated under the illumination effect of flame 60 DEG C of reaction 12min, cooling Filtering thick slag after 5min, gained solution is platinum group metal and the enrichment solution of gold.
The platinum group metal generated after the reaction of this embodiment and the enrichment solution color of gold are gorgeous, are shallow at 98-100 DEG C Yellow green, gradually becomes glassy yellow when temperature is reduced to 90 DEG C, and the persistent period is about about 20 seconds, along with under the continuation of temperature Fall, and become oyster.
Embodiment 2
The invention provides a kind of technique being enriched with platinum group metal and gold, comprise the following steps:
(1) taking green coke raw material for gem, the green coke gem powder being crushed into 250 mesh fineness is standby；
(2) concentrated sulphuric acid that mass fraction is 98% is obtained sulfuric acid solution by the quality of 1:1 than mix and blend with water, take and rub Your concentration is that the hydrochloric acid solution of 2mol/L is standby；
(3) described green coke gem powder is acidified by the mass ratio of 1:3 with hydrochloric acid solution, after acidifying, filters waste liquid, Obtain reaction mass；
(4) described reaction mass is entered by the mass ratio of 5:1:10.5:40.5 with sodium chloride, sulfuric acid solution and hydrochloric acid solution Row mixes to obtain mixed material, described mixed material is heated under the illumination effect of sodium vapor lamp 80 DEG C of reaction 13min, cools down 7min After filter thick slag, gained solution be platinum group metal and gold enrichment solution.
The platinum group metal generated after the reaction of this embodiment and the enrichment solution color of gold are gorgeous, are shallow when about 90 DEG C Reddish yellow.
Embodiment 3
The invention provides a kind of technique being enriched with platinum group metal and gold, comprise the following steps:
Choose ore, deliver to Central South University and carry out mineralogical composition detection, know golden containing in raw material according to censorship report Amount is 0.32g/t, and the content of platinum is less than 0.001g/t, thus it is speculated that obtain containing noble metal in this raw material, uses containing your gold below The ore belonged to is tested.
(1) taking the ore containing noble metal, the mineral dust containing noble metal being crushed into 200 mesh fineness is standby With；
(2) concentrated sulphuric acid that mass fraction is 98% is obtained sulfuric acid solution by the quality of 1.1:1 than mix and blend with water, take Molar concentration is that the hydrochloric acid solution of 4mol/L is standby；
(3) the described mineral dust containing noble metal is acidified by the mass ratio of 1:5 with hydrochloric acid solution, filters after acidifying Except waste liquid, obtain reaction mass；
(4) described reaction mass and sodium chloride, sulfuric acid solution and hydrochloric acid solution are pressed the mass ratio of 5.5:1:16.5:49.5 Carry out mixing to obtain mixed material, described mixed material is heated under the illumination effect of daylight lamp 90 DEG C of reaction 15min, again Add sodium chloride and at a temperature of 80 DEG C, react 15min, the described sodium chloride that again in which is added and described mixed material Mass ratio is 1:5, then filters thick slag after cooling 10min, and gained solution is platinum group metal and the enrichment solution of gold.
The platinum group metal generated after the reaction of this embodiment and the enrichment solution color of gold are gorgeous, are gorgeous at 98-100 DEG C Beautiful rose, lucifuge deposits more than 5 months, intensification invariant color, after 24 months, observes liquid and become under normal temperature condition For yellowish red color.
Embodiment 4
The invention provides a kind of technique being enriched with platinum group metal and gold, comprise the following steps:
(1) taking the ore containing noble metal, the mineral dust containing noble metal being crushed into 250 mesh fineness is standby With；
(2) concentrated sulphuric acid that mass fraction is 98% is obtained sulfuric acid solution by the quality of 1:1 than mix and blend with water, take and rub Your concentration is that the hydrochloric acid solution of 3mol/L is standby；
(3) the described mineral dust containing noble metal is acidified by the mass ratio of 1:4 with hydrochloric acid solution, filters after acidifying Except waste liquid, obtain reaction mass；
(4) described reaction mass is mixed by the mass ratio of 5:1:15:45 with sodium chloride, sulfuric acid solution and hydrochloric acid solution Close to obtain mixed material, described mixed material is heated under the illumination effect of electric filament lamp 90 DEG C of reaction 15min, again adds chlorine Change sodium and at a temperature of 80 DEG C, react 15min, the described sodium chloride of again in which interpolation and the mass ratio of described mixed material For 1:5, then filtering thick slag after cooling 10min, gained solution is platinum group metal and the enrichment solution of gold.
The platinum group metal generated after the reaction of this embodiment and the enrichment solution color of gold are gorgeous, are shallow at 98-100 DEG C Crocus, after temperature reduces, color changes without obvious.
Color change to gained platinum group metal in embodiment 1-4 and the enrichment solution of gold below illustrates.
1, the color of the enrichment solution of gained platinum group metal and gold varies with temperature and the reason that changes is different by other The character of the chloro-complex of price is determined, temperature is different, and element quantivalence in chloro-complex is different, different chlorine complexations The character of thing is the most different, can be as part qualitative detection foundation according to this character.
2, there is the situation of interfering property of color between each element in solution due to the difference of its content, therefore Need further to be verified by following test.
(nineteen sixty-five version) is write below according to " platinum group metal and the chemical analysis guide of gold " " Soviet Union " C.N. gold hereby Boolean lattice etc. The platinum group metal of gained in embodiment of the present invention 1-4 and the enrichment solution of gold are carried out qualitative detection:
1, the qualitative and detection by quantitative of platinum:
In embodiment 1, first gained enrichment solution being warming up to about 90 DEG C, solution presents bright glassy yellow, symbol Close and close described by the works (nineteen sixty-five version) page 94 such as " platinum group metal and the chemical analysis guide of gold " " Soviet Union " C.N. gold hereby Boolean lattice Phenomenon in platiniferous solution；
Secondly, in the superfluous liquor kalii iodide that concentration is 20%, as the Na in enrichment solution2<Ptcl6> content less time Present rose-colored, work as Na2<Ptcl6> content presents redness time more, its reaction sensitivity is 2ug/L；
Again, under the NaOH effect of excess, Na2<Ptcl6> form six hydroxyl network platinic acid H2[Pt(OH)6] or PtO2.4H2O Salt, react containing the solution of alkali with in acetic acid, white precipitate can be produced, this precipitation is dissolved in acid；
Finally, when in solution, platinum chloro-complex content is higher, this solution forms white precipitate six hydroxyl network through sun exposure Platinic acid H2[Pt(OH)6], choose 500ml concentration of precious metal solution, through above-mentioned reaction, by dried for the white precipitate separated out, claim Weight, the content being calculated platinum is 1-4ug/ml.
To sum up, above phenomenon demonstrates the existence of platinum qualitatively, and quantitatively recording the content of platinum in enrichment solution is 1-4ug/ ml。
2, the detection of iridium, osmium
In example 4, after removing platinum and ruthenium, in solution, add the NaOH that mass fraction is 20% react, When being heated to about 90 DEG C, generate light blue precipitation and black colloidal substance, after being heated to boiling, produce black-and-blue granular and sink Forming sediment, gained atrament is osmium；Then extract with diethylene glycol monobutyl ether, after HCl is acidified, is dissolved in water, 20% The lower heating of NaOH effect produces positive blue precipitate, and the positive blue precipitate of gained is iridium, and this detection method is shown in " platinum group metal and gold Chemical analysis guide " " Soviet Union " C.N. gold hereby Boolean lattice etc. writes (nineteen sixty-five version) page 94.
3, the detection of rhodium
In embodiment 3, the enrichment solution of gained noble metal is detected, first by the enrichment solution of described noble metal After extracted platinum, gained solution presents the rose of distinctness when 100 DEG C, becomes colorless through intensification hydrolysis after 4 months, by This can determine whether containing rhodium in solution, and heating process exists hydrolysis, illustrates that preservation condition should be Room-temperature seal and preserves, this detection side Method is shown in the works (nineteen sixty-five version) page 23 such as " platinum group metal and the chemical analysis guide of gold " " Soviet Union " C.N. gold hereby Boolean lattice.
4, the detection of ruthenium
In embodiment 1, after first the concentration of precious metal solution of gained of the present invention being extracted platinum, remaining solution is rising Carry out reaction under the conditions of temperature with sodium nitrite and form the rose-colored crystal settling of fine-powdered；Secondly, in room temperature alkaline solution, this is expensive Metal enrichment solution can form ruthenic chloride with the presence of the acid salt of chlorine, and this material can produce intense stimulus to skin and cause muddy Body is red and swollen, and this phenomenon is shown in the works (nineteen sixty-five version) such as " platinum group metal and the chemical analysis guide of gold " " Soviet Union " C.N. gold hereby Boolean lattice the 27, page 35, containing ruthenium in this concentration of precious metal solution the most provable.
5, the detection of palladium
After the concentration of precious metal solution of gained of the present invention is extracted platinum, producing reddish-brown precipitation in gained solution, this sinks Shallow lake is soluble in hydrochloric acid, and after being dissolved in hydrochloric acid, gained solution is brown, thus may certify that in this solution containing palladium.
6, the detection of gold
In example 2, the concentration of precious metal solution dibutyl ethylene glycol ether of gained of the present invention (is called for short PBC, diethyl Dibutyl ether is colourless liquid analytical pure, and strong to gold extracting power, selectivity is good) carry out 1:1 aqueous phase extraction, obtain after extraction Yellow liquid, thus may certify that Aucl3Existence.
Above-described detailed description of the invention, has been carried out the purpose of the present invention, technical scheme and beneficial effect further Describe in detail, be it should be understood that the detailed description of the invention that the foregoing is only the present invention, be not intended to limit the present invention Protection domain, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, all should comprise Within protection scope of the present invention.

Claims (9)

1. the technique being enriched with platinum group metal and gold, it is characterised in that comprise the following steps:
(1) will be powder containing platinum group metal and golden raw material pulverizing；
(2) described powder being added molar concentration is to be acidified in 1-4mol/L hydrochloric acid, filters after acidifying, removes filtrate, To reaction mass；
(3) being sequentially added into alkali metal chloride, sulfuric acid solution and hydrochloric acid solution in described reaction mass, mix homogeneously must mix Material, is heated to described mixed material 60-90 DEG C of reaction 30-35min, cooled and filtered, removes filtering residue, and gained solution is Platinum group metal and the enrichment solution of gold.
Technique the most according to claim 1, it is characterised in that containing platinum group metal and the raw material of gold described in step (1) For flint clay.
Technique the most according to claim 1, it is characterised in that the fineness of powder described in step (1) is more than 200 mesh.
Technique the most according to claim 1, it is characterised in that powder described in step (2) and the matter of described hydrochloric acid solution Amount ratio is 1:2-5.
Technique the most according to claim 1, it is characterised in that described in step (3), the molar concentration of hydrochloric acid solution is 1- 4mol/L, described sulfuric acid solution be by concentrated sulphuric acid that mass fraction is 98% with water by the mass ratio mixing gained of 0.9-1.1:1.
Technique the most according to claim 5, it is characterised in that reaction mass described in step (3), alkali metal chloride, Sulfuric acid solution, the mass ratio of hydrochloric acid solution are 4.5-5.5:1:4.5-16.5:31.5-49.5.
Technique the most according to claim 5, it is characterised in that after reaction terminates described in step (3), adds alkali gold again After belonging to chloride and reacting 30-35min at a temperature of 60-90 DEG C, then carrying out described cooling, filtration, again in which is added Described alkali metal chloride is 1:4.5-5.5 with the mass ratio of described reaction mass.
8. according to the technique according to any one of claim 1-7, it is characterised in that alkali metal chloride described in step (3) For sodium chloride and/or potassium chloride.
9. according to the technique according to any one of claim 1-7, it is characterised in that in the course of reaction described in step (3) Add light radiation.
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CN109055774A (en) * 2018-09-13 2018-12-21 陈永福 A method of separating platinum, ruthenium and other platinum group metal hydroxide from the solution containing platinum group metal ion
CN109161698A (en) * 2018-09-13 2019-01-08 陈永福 A method of the preferential absorption ruthenium in the technique of enrichment platinum group metal and gold
CN109266853A (en) * 2018-09-13 2019-01-25 陈永福 A kind of technique of combined extracting platinum ruthenium
CN110669939A (en) * 2019-11-12 2020-01-10 长春黄金研究院有限公司 Method for recovering gold from wafer waste
RU2806695C1 (en) * 2021-12-28 2023-11-03 Инститьют Оф Проусес Энжиниринг, Чайниз Экэдеми Оф Сайенсиз Method of palladium extraction

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CN109055774A (en) * 2018-09-13 2018-12-21 陈永福 A method of separating platinum, ruthenium and other platinum group metal hydroxide from the solution containing platinum group metal ion
CN109161698A (en) * 2018-09-13 2019-01-08 陈永福 A method of the preferential absorption ruthenium in the technique of enrichment platinum group metal and gold
CN109266853A (en) * 2018-09-13 2019-01-25 陈永福 A kind of technique of combined extracting platinum ruthenium
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CN110669939A (en) * 2019-11-12 2020-01-10 长春黄金研究院有限公司 Method for recovering gold from wafer waste
RU2806695C1 (en) * 2021-12-28 2023-11-03 Инститьют Оф Проусес Энжиниринг, Чайниз Экэдеми Оф Сайенсиз Method of palladium extraction

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