CN108103311A - A kind of Wet-smelting method of cupro-nickel composite ore - Google Patents
A kind of Wet-smelting method of cupro-nickel composite ore Download PDFInfo
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- CN108103311A CN108103311A CN201711340399.8A CN201711340399A CN108103311A CN 108103311 A CN108103311 A CN 108103311A CN 201711340399 A CN201711340399 A CN 201711340399A CN 108103311 A CN108103311 A CN 108103311A
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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
- 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
- C22B3/08—Sulfuric acid, other sulfurated acids or salts thereof
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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
- C22B15/00—Obtaining copper
- C22B15/0063—Hydrometallurgy
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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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/26—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
- C22B3/38—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds containing phosphorus
- C22B3/384—Pentavalent phosphorus oxyacids, esters thereof
- C22B3/3846—Phosphoric acid, e.g. (O)P(OH)3
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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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/44—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The present invention provides a kind of Wet-smelting method of cupro-nickel composite ore, including step：(1) low sour de-magging, (2) peracid normal pressure decompose, (3) reaction under high pressure, (4) separation of solid and liquid, (5) extraction.The advantages of Wet-smelting method proposed by the present invention, in the rate of recovery that association cobalt in nickel sulfide concentrate is greatly improved, is being increased to more than 95% rate of recovery from the original rate of recovery less than 50%；Hydrometallurgy is directly carried out with nickel sulfide concentrate, the problem of making the output in the form of sulphur of the sulphur in ore, eliminate sulfuric acid " swell-belly " in traditional pyrometallurgical smelting.
Description
Technical field
The invention belongs to field of hydrometallurgy, and in particular to a kind of Wet-smelting method of cupro-nickel composite ore.
Background technology
With the fast development of power lithium battery, the market demand of nickel-cobalt-manganese ternary battery material sharply increases, and shows
The serious situation that supply falls short of demand, China have become the third-largest cobalt country of consumption after the U.S. and Japan.China is one
The poor cobalt country of poor nickel, especially cobalt resource quite scarcity, it is necessary to largely from African import, self-produced cobalt also main association Gansu,
In the nickel sulfide ore on the ground such as Qinghai, almost without individual cobalt deposits.Current domestic nickel sulfide concentrate all uses " flash smelting
Prepare low nickel matte → bessemerize and prepare converter mattes " process flow.Since cobalt easily aoxidizes, during pyrometallurgical smelting, easily
Entering in the form of the oxide in slag causes metal loss, and the rate of recovery of cobalt is still less than 50% at present；Meanwhile in flash smelting and
Substantial amounts of sulfur dioxide flue gas can be generated during bessemerizing, although solving asking for pollution air after sulfur dioxide relieving haperacidity
Topic, but caused by a common problem be exactly sulfuric acid " swell-belly ", that is, generated sulfuric acid is difficult to consume, storage it is more long-pending more
It is more, it is economically not cost-effective, while also there is the larger security risks such as easy leakage.
Traditional pyrometallurgical smelting has the shortcomings that so：
1. traditional pyrometallurgical smelting generates a large amount of sulfur dioxide flue gas, the sulfuric acid of final output becomes the burden of enterprise；
2. traditional pyrometallurgical smelting makes the iron in concentrate be transferred in clinker, a large amount of solid wastes are generated, are caused to a certain extent
The waste of iron resource；
3. traditional pyrometallurgical smelting causes the cobalt of association in concentrate largely to lose, from concentrate to low nickel matte during lose about
20%, about 30% is lost from low nickel matte to converter mattes.
For the pyrometallurgical smelting present situation of cobalt, it is necessary to propose a kind of cobalt smelting process of low-consumption high-efficiency.
The content of the invention
For existing pyrometallurgical smelting there are the problem of, the present invention proposes the Wet-smelting method of new cupro-nickel composite ore,
Using nickel sulfide concentrate as process object, using two sections of normal pressure acidleach, the flue gas of generation prepares high purity sulphur with classical Claus method
Sulphur, gained leached mud are used for Copper making, output iron-smelting raw material iron ore after the purified processing of leachate；Except after iron liquid through extraction and
Back extraction obtains cobalt sulfate solution and nickel sulfate solution, and cobalt sulfate solution is used to prepare cobaltous sulfate crystal, and nickel sulfate solution can be used for
The production of nickel sulfate hexahydrate crystal or electric nickel.
The technical solution for realizing above-mentioned purpose of the present invention is：
A kind of Wet-smelting method of cupro-nickel composite ore, which is characterized in that including step：
(1) low sour de-magging：Consolidate mass ratio by liquid as 2L:1kg~10L:The ratio of 1Kg, by the sulfuric acid of 0.5-1mol/L and
Cupro-nickel composite ore, which is placed in tank diameter, carries out de-magnesium reaction, separation of solid and liquid after reaction time 1-6h, not high containing magnesium in gained filter residue
In 0.5%；
(2) peracid normal pressure decomposes：Filter residue obtained by step (1) is placed in leaching tanks, liquid is controlled to consolidate mass ratio as 2L:1kg
~6L:1Kg, sulfuric acid concentration be 2~12mol/L, separation of solid and liquid after reaction；
(3) reaction under high pressure：Filtrate obtained by step (2) is added in autoclave and is reacted, control reaction temperature
It spends for 150-220 DEG C, it is 0.1-1MPa to maintain partial pressure of oxygen in kettle, and separation of solid and liquid is carried out after the completion of reaction；
(4) separation of solid and liquid：The pH value of filtrate obtained by step (3) is maintained to carry out separation of solid and liquid after reaction between 3-5；
(5) extract：Between pH to the 1-2 for the filtrate that set-up procedure (4) obtains, extractant is added in filtrate and carries out cobalt
Extraction.
Wherein, in the copper-nickel composite ore, the mass content of nickel is 2-10%, and the mass content of copper is 1-8%.
Preferably, in step (1), sulfuric acid and cupro-nickel composite ore is placed in air stirring slot and carry out de-magnesium reaction, reacted
Separation of solid and liquid after time 3-8h.
Wherein, in step (2), filter residue obtained by step (1) is placed in closed stirred leaching tank, reaction temperature 60~98
DEG C, separation of solid and liquid after 50~180rpm of speed of agitator, 0.5~5h of reaction time.
Wherein, in step (3), the time of reaction under high pressure is 1-6h；Separation of solid and liquid is carried out after the completion of reaction, by residue washing
Iron-smelting raw material (being equivalent to iron ore) is used as after drying.
Wherein, in the step (4), by add in alkali maintain pH value of solution between 3-5, blast air or oxygen or
Hydrogen peroxide is added in, reacts 2-6h.
Wherein, in step (5), the extractant be P204, P507, Cyanex272 in one or more, extractant and
It is added in filtrate and is extracted after solvent mixing, extraction phase ratio (O/A) is 1:1-4:1；The solvent is sulfonated kerosene.
PH value can be adjusted with sulfuric acid in step (5).
Wherein, in step (5), separate water phase and organic phase obtains nickel sulfate solution and organic phase containing cobalt, nickel sulfate solution
It carries out condensing crystallizing and can obtain nickel sulfate hexahydrate crystal；Organic phase containing cobalt is stripped to obtain cobalt sulfate solution for producing with sulfuric acid
Cobaltous sulfate product.
The advantages of Wet-smelting method proposed by the present invention, is in time that association cobalt in nickel sulfide concentrate is greatly improved
Yield is increased to more than 95% rate of recovery from the original rate of recovery less than 50%；Wet method is directly carried out with nickel sulfide concentrate
It smelts, the problem of making the output in the form of sulphur of the sulphur in ore, eliminate sulfuric acid " swell-belly " in traditional pyrometallurgical smelting.
Specifically have the advantage that：
1. the final output in the form of sulphur of sulphur in concentrate, is readily transported, stores, solve traditional pyrometallurgical smelting production fluid
The immense pressure of state sulfuric acid；
2. using the means of advance de-magging valuable metal is made to be separated with magnesium, be conducive to the pyrometallurgical smelting process of subsequent copper；
3. realizing the recycling of iron, the discharge of melting waste slag is drastically reduced；
4. the rate of recovery of cobalt is greatly improved, the rate of recovery of cobalt can reach more than 95% in concentrate circumstances；
5. this method clean environment firendly greatly reduces the discharge of the three wastes, simplifies production procedure, reduces production cost,
The comprehensive recovery of resource is improved simultaneously.
Specific embodiment
Technical solution is further illustrated the present invention with specific embodiment below.Those skilled in the art are it is to be understood that reality
It applies example and is merely to illustrate the present invention, be not used in and limit the scope of the invention.
In embodiment, unless otherwise instructed, technological means used is this field conventional technology.
Embodiment 1
In the nickel sulfide concentrate that the present embodiment uses, Ni contents are that 7.2%, Fe contents are that 42.6%, S contents are
36.5%, Cu content are that 2.8%, Co contents are 0.35%, Al2O3Content is 0.2%, content of MgO 2.78%, SiO2Content
For 3.9% (being mass content).
1) low sour de-magging：Consolidate mass ratio by liquid as 10L:The ratio of 1Kg puts the sulfuric acid of 0.5mol/L and cupro-nickel composite ore
Carry out de-magnesium reaction in air stirring slot, separation of solid and liquid after reaction time 5h containing magnesium is 0.35% in gained filter residue；
2) peracid normal pressure decomposes：Filter residue obtained by step 1) is placed in closed stirred leaching tank, which is furnished with flue gas
Negative pressure collection system controls liquid to consolidate mass ratio as 5L:1Kg, sulfuric acid concentration 10mol/L, 95 DEG C of reaction temperature, speed of agitator
Separation of solid and liquid after 60rpm, reaction time 1h is containing copper concentrate after the washed drying of gained filter residue, and filtrate is iron, nickel, cobalt mix
Solution is closed, copper content is 0.15g/L in filtrate, and high-purity sulphur is prepared for Claus method after the fume collection of generation；
3) filtrate obtained by step 2) is added in autoclave and reacted, controlling reaction temperature is 200 DEG C, dimension
It is 0.1MPa, reaction time 5h to hold partial pressure of oxygen in kettle；Separation of solid and liquid is carried out after the completion of reaction, can be made after residue washing is dried
For iron-smelting raw material iron ore；
4) solid base (NaOH) set-up procedure 3 is used) pH of gained filtrate for 5, blasts solid after air reaction 5h into filtrate
Liquid separates；
With the H of 2mol/L2SO4The pH for adjusting filtrate is 1, by extractant Cyanex27225 (volume) %+ sulfonated kerosenes 75
(volume) % is added to the extraction that cobalt is carried out in filtrate, and extraction phase ratio (O/A) is 3:1；Separation water phase and organic phase obtain sulfuric acid
Nickel solution and organic phase containing cobalt, nickel sulfate solution carry out condensing crystallizing and can obtain nickel sulfate hexahydrate crystal；The sulfuric acid of organic phase containing cobalt
It is stripped to obtain cobalt sulfate solution for producing cobaltous sulfate product, the yield of cobalt is 99.1%.
Embodiment 2
In the nickel sulfide concentrate that the present embodiment uses, Ni contents are that 7.2%, Fe contents are that 42.6%, S contents are
36.5%, Cu content are that 2.8%, Co contents are 0.35%, Al2O3Content is 0.2%, content of MgO 2.78%, SiO2Content
For 3.9% (being mass content).
1) low sour de-magging：Consolidate mass ratio by liquid as 5L:The ratio of 1Kg puts the sulfuric acid of 0.5mol/L and cupro-nickel composite ore
Carry out de-magnesium reaction in air stirring slot, separation of solid and liquid after reaction time 5h containing magnesium is 0.37% in gained filter residue；
2) peracid normal pressure decomposes：Filter residue obtained by step 1) is placed in closed stirred leaching tank, liquid is controlled to consolidate mass ratio be
3L:1Kg, sulfuric acid concentration 10mol/L, separation of solid and liquid after 95 DEG C, speed of agitator 60rpm, reaction time 3h of reaction temperature, gained
It is containing copper concentrate after the washed drying of filter residue, filtrate is iron, nickel, cobalt mixed solution, and copper content is 0.18g/L in filtrate, is produced
After raw fume collection high-purity sulphur is prepared for Claus method；
3) filtrate obtained by step 2) is added in autoclave and reacted, controlling reaction temperature is 200 DEG C, dimension
It is 0.1MPa, reaction time 5h to hold partial pressure of oxygen in kettle；Separation of solid and liquid is carried out after the completion of reaction, can be made after residue washing is dried
For iron-smelting raw material iron ore；
4) solid base regulating step 3 is used) for 5, separation of solid and liquid after air reaction 5h is blasted into filtrate the pH of gained filtrate；
With the H of 2mol/L2SO4The pH for adjusting filtrate is 1, by 75 (body of (volume) %+ of P204 extractants 25 sulfonated kerosenes
Product) % be added in filtrate carry out cobalt extraction, extraction phase ratio (O/A) be 3:1；It is molten that separation water phase and organic phase obtain nickel sulfate
Liquid and organic phase containing cobalt, nickel sulfate solution carry out condensing crystallizing and can obtain nickel sulfate hexahydrate crystal；Organic phase containing cobalt is carried out with sulfuric acid
Back extraction obtains cobalt sulfate solution for producing cobaltous sulfate product, and the yield of cobalt is 99%.
Embodiment 3
The nickel sulfide concentrate that the present embodiment uses is the same as embodiment 1.
1) low sour de-magging：Consolidate mass ratio by liquid as 2L:The ratio of 1Kg puts the sulfuric acid of 0.5mol/L and cupro-nickel composite ore
Carry out de-magnesium reaction in air stirring slot, separation of solid and liquid after reaction time 5h containing magnesium is 0.75% in gained filter residue；
2) peracid normal pressure decomposes：Filter residue obtained by step 1) is placed in closed stirred leaching tank, liquid is controlled to consolidate mass ratio be
5L:1Kg, sulfuric acid concentration 10mol/L, separation of solid and liquid after 95 DEG C, speed of agitator 60rpm, reaction time 1h of reaction temperature, gained
It is containing copper concentrate after the washed drying of filter residue, filtrate is iron, nickel, cobalt mixed solution, and copper content is 0.61g/L in filtrate, is produced
After raw fume collection high-purity sulphur is prepared for Claus method；
3) filtrate obtained by step 2) is added in autoclave and reacted, controlling reaction temperature is 200 DEG C, dimension
It is 0.1MPa, reaction time 5h to hold partial pressure of oxygen in kettle；Separation of solid and liquid is carried out after the completion of reaction, can be made after residue washing is dried
For iron-smelting raw material iron ore；
4) solid base regulating step 3 is used) pH of gained filtrate is 4, the separation of solid and liquid after air-blowing reaction 5h into filtrate；
With the H of 3mol/L2SO4The pH for adjusting filtrate is 1, by extractant Cyanex27225 (volume) %+ sulfonated kerosenes 75
(volume) % is added to the extraction that cobalt is carried out in filtrate, and extraction phase ratio (O/A) is 2:1；Separation water phase and organic phase obtain sulfuric acid
Nickel solution and organic phase containing cobalt, nickel sulfate solution carry out condensing crystallizing and can obtain nickel sulfate hexahydrate crystal；The sulfuric acid of organic phase containing cobalt
It is stripped to obtain cobalt sulfate solution for producing cobaltous sulfate product, the yield of cobalt is 99.2%.
Comparative example
The nickel sulfide concentrate that the present embodiment uses is the same as embodiment 1.
1) low sour de-magging：Consolidate mass ratio by liquid as 2L:The ratio of 1Kg puts the sulfuric acid of 0.5mol/L and cupro-nickel composite ore
Carry out de-magnesium reaction in air stirring slot, separation of solid and liquid after reaction time 5h containing magnesium is 0.75% in gained filter residue；
2) peracid normal pressure decomposes：Filter residue obtained by step 1) is placed in closed stirred leaching tank, liquid is controlled to consolidate mass ratio be
5L:1Kg, sulfuric acid concentration 10mol/L, separation of solid and liquid after 95 DEG C, speed of agitator 60rpm, reaction time 1h of reaction temperature, gained
It is containing copper concentrate after the washed drying of filter residue, filtrate is iron, nickel, cobalt mixed solution, and copper content is 0.61g/L in filtrate, is produced
After raw fume collection high-purity sulphur is prepared for Claus method；
3) filtrate obtained by step 2) is added in autoclave and reacted, controlling reaction temperature is 200 DEG C, dimension
It is 0.1MPa, reaction time 5h to hold partial pressure of oxygen in kettle；Separation of solid and liquid is carried out after the completion of reaction, can be made after residue washing is dried
For iron-smelting raw material iron ore；
4) solid base set-up procedure 3 is used) pH of gained filtrate is 4, the separation of solid and liquid after air-blowing reaction 5h into filtrate；
With the H of 1mol/L2SO4The pH for adjusting filtrate is 3, by extractant Cyanex27225 (volume) %+ sulfonated kerosenes 75
(volume) % is added to the extraction that cobalt is carried out in filtrate, and extraction phase ratio (O/A) is 2:1；Separation water phase and organic phase obtain sulfuric acid
Nickel solution and organic phase containing cobalt, nickel sulfate solution carry out condensing crystallizing and can obtain nickel sulfate hexahydrate crystal；The sulfuric acid of organic phase containing cobalt
It is stripped to obtain cobalt sulfate solution for producing cobaltous sulfate product, the yield of cobalt is 98.2%.
Above embodiment be only to the present invention specific embodiment be described, not to the scope of the present invention into
Row limits, and those skilled in the art can also do numerous modifications and variations, be set not departing from the present invention on the basis of existing technology
On the premise of meter spirit, all variations and modifications that this field ordinary skill technical staff makes technical scheme,
It should all fall into the protection domain that claims of the present invention determines.
Claims (8)
1. a kind of Wet-smelting method of cupro-nickel composite ore, which is characterized in that including step：
(1) low sour de-magging：Consolidate mass ratio by liquid as 2L:1kg~10L:The ratio of 1Kg, by the sulfuric acid and cupro-nickel of 0.5-1mol/L
Composite ore, which is placed in tank diameter, carries out de-magnesium reaction, separation of solid and liquid after reaction time 1-6h,
(2) peracid normal pressure decomposes：Filter residue obtained by step (1) is placed in leaching tanks, liquid is controlled to consolidate mass ratio as 2L:1kg~6L:
1Kg, sulfuric acid concentration be 2~12mol/L, separation of solid and liquid after reaction；
(3) reaction under high pressure：Filtrate obtained by step (2) is added in autoclave and is reacted, controlling reaction temperature is
150-220 DEG C, it is 0.1-1MPa to maintain partial pressure of oxygen in kettle, and separation of solid and liquid is carried out after the completion of reaction；
(4) separation of solid and liquid：The pH value of filtrate obtained by step (3) is maintained to carry out separation of solid and liquid after reaction between 3-5；
(5) extract：Between pH to the 1-2 for the filtrate that set-up procedure (4) obtains, extractant is added to the extraction that cobalt is carried out in filtrate
It takes.
2. the Wet-smelting method of cupro-nickel composite ore according to claim 1, which is characterized in that in the copper-nickel composite ore,
The mass content of nickel is 2-10%, and the mass content of copper is 1-8%.
3. the Wet-smelting method of cupro-nickel composite ore according to claim 1, which is characterized in that in step (1), by sulfuric acid and
Cupro-nickel composite ore, which is placed in air stirring slot, carries out de-magnesium reaction, separation of solid and liquid after reaction time 3-8h.
4. the Wet-smelting method of cupro-nickel composite ore according to claim 1, which is characterized in that in step (2), by step
(1) gained filter residue is placed in closed stirred leaching tank, 60~98 DEG C, 50~180rpm of speed of agitator of reaction temperature, the reaction time
Separation of solid and liquid after 0.5~5h.
5. the Wet-smelting method of cupro-nickel composite ore according to claim 1, which is characterized in that in step (3), reaction under high pressure
Time be 1-6h；Separation of solid and liquid is carried out after the completion of reaction, as iron-smelting raw material after residue washing is dried.
6. the Wet-smelting method of cupro-nickel composite ore according to claim 1, which is characterized in that in the step (4), pass through
It adds in alkali and maintains solution ph between 3-5, blast air or oxygen or add in hydrogen peroxide, react 2-6h.
7. according to the Wet-smelting method of any one of claim 1-6 the copper-nickel composite ores, which is characterized in that in step (5),
The extractant is the one or more in P204, P507, Cyanex272, is added to after extractant and solvent mixing in filtrate
It is extracted, extraction phase ratio (O/A) is 1:1-4:1；The solvent is sulfonated kerosene.
8. according to the Wet-smelting method of any one of claim 1-6 the copper-nickel composite ores, which is characterized in that in step (5),
Separation water phase and organic phase obtain nickel sulfate solution and organic phase containing cobalt, and nickel sulfate solution carries out condensing crystallizing and can obtain sulfuric acid
Nickel crystal；Organic phase containing cobalt is stripped to obtain cobalt sulfate solution for producing cobaltous sulfate product with sulfuric acid.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112553478A (en) * | 2020-12-02 | 2021-03-26 | 金川集团镍盐有限公司 | Method for quickly leaching nickel hydroxide cobalt sulfuric acid system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1392902A (en) * | 2000-09-18 | 2003-01-22 | 英科有限公司 | Recovery of nickel and cobalt values from sulfidic flotation concentrate by chloride assisted oxidative pressure leaching in sulfuric acid |
| CN102965500A (en) * | 2012-12-10 | 2013-03-13 | 金川集团股份有限公司 | Method for decreasing magnesium oxide in nickel sulfide concentrate |
-
2017
- 2017-12-14 CN CN201711340399.8A patent/CN108103311A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1392902A (en) * | 2000-09-18 | 2003-01-22 | 英科有限公司 | Recovery of nickel and cobalt values from sulfidic flotation concentrate by chloride assisted oxidative pressure leaching in sulfuric acid |
| CN102965500A (en) * | 2012-12-10 | 2013-03-13 | 金川集团股份有限公司 | Method for decreasing magnesium oxide in nickel sulfide concentrate |
Non-Patent Citations (1)
| Title |
|---|
| 刘时杰: "《铂族金属冶金学》", 30 June 2013, 中南大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112553478A (en) * | 2020-12-02 | 2021-03-26 | 金川集团镍盐有限公司 | Method for quickly leaching nickel hydroxide cobalt sulfuric acid system |
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Application publication date: 20180601 |