CN103014331A - Process for pressure leaching of molybdenum and nickel from molybdenum-nickel ore - Google Patents
Process for pressure leaching of molybdenum and nickel from molybdenum-nickel ore Download PDFInfo
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- CN103014331A CN103014331A CN2013100152368A CN201310015236A CN103014331A CN 103014331 A CN103014331 A CN 103014331A CN 2013100152368 A CN2013100152368 A CN 2013100152368A CN 201310015236 A CN201310015236 A CN 201310015236A CN 103014331 A CN103014331 A CN 103014331A
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Abstract
The invention discloses a process for pressure leaching of molybdenum and nickel from molybdenum-nickel ore, and the method comprises the following steps: adding powdered molybdenum-nickel ore, a catalyst and an acid solution into a pressure reaction kettle, mixing the solid with the liquid and filling oxygen for pressure leaching to extract the molybdenum and the nickel, wherein the catalyst is a soluble compound of metal with alterable valence. According to the process disclosed by the invention, the leaching rates of the molybdenum and nickel from the molybdenum-nickel ore are high and are higher than 95%; the oxidization-reduction property of the metal with alterable valence is utilized, so that metal ions with high valence can be generated in the presence of oxygen and water to continue to oxidize to leach the molybdenum and the nickel from the ore till the leaching is finished, chemicals reagents are greatly saved and the emission of pollution gas is reduced; and good economic benefit is brought to the industrial production.
Description
Technical field
The present invention relates to non-ferrous metal metallurgy technique, particularly the hydrometallurgical processes of molybdenum nickel associated minerals.
Background technology
Molybdenum can improve the erosion resistance of steel, and adds molybdenum in cast iron, can improve intensity and the wear resisting property of iron; And nickel is as the first-selected alloy raw material of stainless steel, and the Refining Nickel in the whole world about 66% is for the manufacture of stainless steel, and molybdenum and nickel simple substance are mainly smelted from the molybdenum nickel minerals and obtained.The molybdenum nickel minerals is the multi-metal sulfide that a kind of difficulty is selected non-crystalline state colloid attitude, forms complexity, and the content of molybdenum and nickel is low.Contain molybdenum only 3～7%, nickeliferous 2～5%, the molybdenum nickel minerals is difficult to ore-dressing technique enriching and recovering in addition.
The traditional technology great majority of Leaching Molybdenum and nickel are the technique that adopts the pyrogenic process wet method to combine from the molybdenum nickel ores.Be divided into two steps: one, pyrogenic process oxidizing roasting method desulfurization, through the alkali Leaching Molybdenum, wherein nickel is stayed in the metallurgical slag; Two, the nickel in the metallurgical slag becomes ferronickel or low nickel matte with pyrometallurgical smelting again.Above-mentioned technique main drawback has: produce a large amount of SO in the step 1 in the pyrogenic process oxidizing roasting
2Gas, this gas are one of main inducing that forms acid rain, and is very large to environmental hazard; In the step 2, the ferronickel that pyrometallurgical smelting goes out is not easy to separate again.Improved afterwards step 1 in this technique, and adopted alkali lye pressuring method Leaching Molybdenum after the pyrogenic process oxidizing roasting, alkali lye can absorb the SO that produces in the first step oxidising process
2, but because the suitability for industrialized production generation is large-minded, this technique still can not adsorb to fall SO fully in large-scale industrialization is produced
2, and can consume more chemical reagent, thus production cost increased.
Disclose among the Chinese patent CN1267739A a kind of in the diluted acid medium take ammonium nitrate as oxygenant full wet oxidation Leaching Molybdenum nickel minerals technique, the step of above-mentioned patent wet-leaching molybdenum nickel from the molybdenum nickel minerals is: one, ball milling; Two, oxygenant leaches under the sour environment, and leaching condition is: solid-to-liquid ratio 1:3～5, and 1.5～4 hours time, 70～90 ℃ of temperature, strength of solution: sulfuric acid concentration is 45～65%, nitric acid ammonia concentration is 18～29%, and adopts machinery at the uniform velocity to stir.Adopt this technique, the rate of recovery of molybdenum and nickel is respectively 90% and 94%.
The said process reaction mechanism is:
MoS
2+ 6NO
3 -=MoO
4 2-+ 2SO
4 2-+ 6NO ↑ (H
+As catalyzer)
3NiS+8NO
3 -+8H
+=3Ni
2++3SO
4 2-+4H
2O+?8NO↑
In this technique, under sour environment, as oxygenant, directly the negative divalent sulfur elemental oxygen in the molybdenum nickel minerals is changed into the sexavalence element sulphur and generate SO in the employing ammonium nitrate
2- 4, avoided SO
2Release, solved SO
2The problem of γ-ray emission; Nickel enters solution fully after acidleach, thereby has effectively solved the problem that ferronickel is not easy to separate again in the pyrometallurgical smelting process.But can produce oxides of nitrogen gas in the Oxidation Leaching process, environmental pollution problem exists equally; Need to consume in addition a large amount of ammonium nitrate oxidizing agents in leaching process, production cost is high.
(in April, 2008 date of publication " Hunan non-ferrous metal " the 24th volume second phase, middle figure classification number TF8031-21) the 16th page, " nickel-molybdenum ore with carbon extracts the experimental study of nickel molybdenum novel process for smelting " author: Wu Haiguo, improved the second step in the above-mentioned processing step, technique in above-mentioned patent announcement, utilize in the step 2 hypochlorous acid or oxymuriate replace ammonium nitrate as oxygenant under acidity or alkaline condition, sulfide in the atmospheric pressure oxidation mineral, make molybdenum or nickel oxidation enter solution, the nickel molybdenum is separated with mineral.Under the alkaline condition, MoS
2, NiS and hypochlorous acid reaction mechanism be as follows:
MoS
2?+?9ClO?
-?+?6OH
-?=MoO
2?- 4?+?2SO
2?- 4?+?9Cl?
-?+?3H
2O
NiS+4ClO
-=Ni
2++ SO
2- 4+ 4Cl
-(OH
-As catalyzer)
Net reaction is: MoS
2+ NiS+13ClO
-+ 6OH
-=Ni
2++ MoO
4 2-+ 3SO
4 2-+ 3H
2O+ 13Cl
-
Under the acidic conditions, MoS
2,NiS is by the sodium chlorate oxidation mechanism:
MoS
2+ 3H
2O+3ClO
- 3=H
2MoO
4+ 2SO
2- 4+ 3Cl
-+ 4H
+(H
+As catalyzer)
3NiS+4ClO
- 3→ 3Ni
2++ 3SO
2- 4+ 4Cl
-(H
+As catalyzer)
Net reaction is: MoS
2+ 3NiS+7ClO
3 -3H
2O=3Ni
2++ H
2MoO
4+ 5SO
4 2-+ 7Cl
-+ 4H
+(H
+As catalyzer)
In this technique, under sour environment, adopt ClO
–Perhaps ClO
- 3As oxygenant, directly the negative divalent sulfur elemental oxygen in the molybdenum nickel minerals is changed into the sexavalence element sulphur and generate SO
2- 4, avoided SO
2Release, ClO
–Perhaps ClO
- 3Product after being reduced is Cl
-, do not discharge the gas of contaminate environment.But can generate Cl
-, Cl
-Stable chemical nature is difficult to remove from trade effluent, becomes new source of pollution.And, from above-mentioned reaction equation, can draw to draw a conclusion:
1 part of MoS of every leaching
2Need in theory to consume 9 parts of ClO
-Perhaps 3 parts of ClO
- 31 part of NiS of every leaching needs to consume 4 parts of ClO in theory
-Perhaps 1.33 parts of ClO
- 3, molybdenum nickel minerals hydrometallurgical processes suitability for industrialized production need to expend a large amount of Cl
2Perhaps oxymuriate or hypochlorite, the problem that industrialization consumes a large amount of chemical reagent still exists.
And, more than the technical study of full wet processing molybdenum nickel minerals, only limit to the laboratory study stage, be not applied on a large scale industrialized developing production molybdenum nickel minerals.
Summary of the invention
The object of the invention is to overcome the deficiency that existing environment is unfriendly, reagent consumption is large, production cost is high in existing hydrometallurgy molybdenum, the nickel technology, provide a kind of improved from the molybdenum nickel minerals technique of Leaching Molybdenum and nickel.
In order to realize the foregoing invention purpose, the invention provides following technical scheme:
The technique of pressure leaching molybdenum and nickel from the molybdenum nickel minerals, its step comprises: molybdenum nickel minerals powder, catalyzer, acid solution are added in the pressure reaction still, and solid-liquid mixes, logical oxygen pressing Leaching Molybdenum nickel;
Described catalyzer is the soluble compound of variable valency metal.
Provided by the invention from the molybdenum nickel minerals in the technique of Leaching Molybdenum and nickel, variable valency metal provides the high oxidation state metal ion in the soluble compound of variable valency metal, acid solution provides sour environment for reaction, the high oxidation state metal ion has strong oxidizing property in sour environment, thus can in the molybdenum nickel minerals-divalent S is direct oxidation into+6 valency S generate SO
4 2-, avoided SO
2The discharging of tail gas; Pass into oxygen in the reaction process, it is soluble in water that the low valence metal ion that the molybdenum oxide nickel minerals is produced generates high volence metal ion, high volence metal ion can be reused, variable valency metal ions is equivalent to the effect of catalyzer in overall process, thus the use of not only having avoided the discharging of obnoxious flavour but also having saved chemical reagent.Add catalyzer in reaction process, help to improve the leaching yield of molybdenum nickel, this process is without gas reaction, and speed is controlled, environmental protection, safety.
Further preferred, variable valency metal can comprise copper, iron, cerium, manganese or cobalt in the soluble compound of described variable valency metal.
Preferably, above-mentioned acid solution is dilution heat of sulfuric acid.
Preferably, the concentration of described catalyzer in reactor is 1～20g/L.
Preferably, described Leaching reaction pressure is 0.2～0.9MPa, and oxygen partial pressure is 0.3～0.6MPa in the reaction pressure.
Preferably, described Leaching reaction carries out under less than 5 condition in the pH value.
Preferably, described Leaching reaction temperature is 120 ℃～160 ℃.
Temperature is excessively low, and then the Leaching reaction time obviously lengthens, and excess Temperature becomes more strict to equipment requirements.
Preferably, the described Leaching reaction time is 3～6 hours.
Time is too short, and then pressure leaching efficient is not high, and extraction time surpasses 6 hours, and pressure leaching efficient does not especially significantly improve.
Preferably, the granularity of described molybdenum nickel minerals powder is 100～400 orders.
Above-mentioned granularity is conducive to Leaching Molybdenum and nickel from molybdenum nickel minerals powder.
In the choosing of acid solution, can choose dense acid solution, add water move to that pH of leaching solution is suitable to achieve the goal, when solid-liquid mixes, at least need solid matter is immersed in the liquid fully, preferred, molybdenum nickel minerals powder and solution solid-liquid mass ratio are 1:2～6 in the described adding reactor
Compared with prior art, beneficial effect of the present invention:
Of the present invention from the molybdenum nickel minerals technique of pressure leaching molybdenum and nickel, adopt acid, oxygen and catalyzer as oxidation system, strong oxidizing property (in the acidic solution) and reproducible characteristic according to high volence metal ion, nickel and molybdenum under lower pressure, temperature in the very fast Oxidation Leaching molybdenum nickel minerals, reaction conditions reaches easily and controls; Reaction mechanism of the present invention is as follows:
MoS
2+12H
2O?+18Me
3+=H
2MoO
4+2SO
4 2-+22H
++18Me
2+
MoS
2+12H
2O?+18Me
3+=MoO
4 2-+2SO
4 2-+24H
++18Me
2+
NiS+8Me
3++4H
2O?=Ni
2++SO
4 2-+8H
++?8Me
2+
Me
2+By O
2Oxidation:
4Me
2++4H
++O
2=4Me
3++2H
2O
(Me is a kind of of variable valency metal)
Net reaction is: 2MoS
2+ 6NiS+21O
2+ 6H
2O=6Ni
2++ 2 H
2MoO
4+ 10SO
4 2-+ 8H
+
Can find out from above net reaction, in the molybdenum nickel minerals in the process of Leaching Molybdenum nickel, used up material only has water and oxygen, the variable valency metal soluble compound has served as the effect of catalyzer in total reaction, the material that consumes in theory only has water and oxygen, variable valency metal compound no consumption produces byproduct sulfuric acid simultaneously.In the actual production, carrying out primary first-order equation has 98% variable valency metal compound again to be recycled, and water and oxygen can cheapness obtain, whole from the molybdenum nickel minerals technique of wet-leaching molybdenum nickel have that nonpollution environment waste gas is emitted, good in economic efficiency advantage.
Embodiment
The present invention is described in further detail below in conjunction with test example and embodiment.But this should be interpreted as that the scope of the above-mentioned theme of the present invention only limits to following embodiment, all technology that realizes based on content of the present invention all belong to scope of the present invention.
First molybdenum nickel minerals raw ore is pulverized, it is 100～400 purpose molybdenum nickel minerals powder that molybdenum nickel minerals after will pulverizing with industrial Raymond mill is worn into granularity, molybdenum nickel minerals powder, catalyzer, dilution heat of sulfuric acid are joined in the pressure reaction still, and the confining pressure reactor also continues to pass into oxygen maintenance pressure.
Embodiment 1
The Leaching Molybdenum from the molybdenum nickel minerals that present embodiment is enumerated and the technique of nickel are carried out fragmentation, grinding with molybdenum nickel raw ore, and obtaining granularity is 100 purpose molybdenum nickel minerals powder; Be that 98% sulfuric acid is mixed with 8m with concentration
3Dilute acid soln is with 2 tons above-mentioned molybdenum nickel minerals powder and 8m
3It is 12m that solution joins volume
3Pressure reaction still in, add 20Kg ferric sulfate and fully mix, pass into oxygen and carry out Oxidation Leaching; The main component of molybdenum nickel minerals: molybdenum is 5.5%, and nickel is 4.2%, and sulphur is 20%, is heated to 150 ℃, keeps reaction pressure at 0.7Mpa, and oxygen partial pressure is 0.3MPa, and pH is 5 in the pressure reaction still, reacts 3.5 hours.
Above-mentioned molybdenum nickel minerals powder is after the pressure reaction still reaction is complete, and normal pressure alkali soaks again.Detect molybdenum nickel minerals powder and only have 0.18% the unconverted molybdenum oxide (MoO of being of molybdenum
3), the Recycle of molybdenum rate is 96.7%, and molybdenum nickel minerals powder only has 0.12% nickel to enter the slag phase, and the rate of recovery of nickel is 97.1%.
Embodiment 2
The Leaching Molybdenum from the molybdenum nickel minerals that present embodiment is enumerated and the technique of nickel are carried out fragmentation, grinding with molybdenum nickel raw ore, and obtaining granularity is 300 purpose molybdenum nickel minerals powder; Be that 98% sulfuric acid and 20Kg copper sulfate are mixed with 8m with concentration
3Solution is with 2 tons above-mentioned molybdenum nickel minerals powder and 8m
3It is 12m that dilute acid soln joins volume
3Pressure reaction still in, fully mix, pass into oxygen and carry out Oxidation Leaching; The main component of molybdenum nickel minerals: molybdenum is 5.5%, and nickel is 4.2%, and sulphur is 20%, is heated to 145 ℃, keeps reaction pressure at 0.8Mpa, and oxygen partial pressure is 0.35MPa, and pH is 4 in the pressure reaction still, reacts 4 hours.
Above-mentioned molybdenum nickel minerals powder is after the pressure reaction still reaction is complete, and normal pressure alkali soaks again.Detect molybdenum nickel minerals powder and only have that 0.16% molybdenum is unconverted to be molybdenum oxide (MoO3), the Recycle of molybdenum rate is 97.1%, and molybdenum nickel minerals powder only has 0.09% nickel to enter the slag phase, and the rate of recovery of nickel is 97.9%.
Embodiment 3
The Leaching Molybdenum from the molybdenum nickel minerals that present embodiment is enumerated and the technique of nickel are carried out fragmentation, grinding with molybdenum nickel raw ore, and obtaining granularity is 200 purpose molybdenum nickel minerals powder, are that to join volume be 12m for 98% sulfuric acid, 2 tons molybdenum nickel minerals powder and 8 tons of water with concentration
3Pressure reaction still in, catalyzer is the copper iron sulfate, the add-on of copper iron sulfate is 20kg, fully mixes, and passes into oxygen and carries out Oxidation Leaching; The main component of molybdenum nickel minerals: molybdenum is 5.5%, and nickel is 4.2%, and sulphur is 20%, is heated to 155 ℃, keeps reaction pressure at 0.8Mpa, and oxygen partial pressure is 0.4MPa, and pH is 3 in the pressure reaction still, reacts 4.5 hours.
Above-mentioned molybdenum nickel minerals powder is after the pressure reaction still reaction is complete, and normal pressure alkali soaks again.Detect molybdenum nickel minerals powder and only have 0.19% the unconverted molybdenum oxide (MoO of being of molybdenum
3), the Recycle of molybdenum rate is 96.5%, and molybdenum nickel minerals powder only has 0.11% nickel to enter the slag phase, and the rate of recovery of nickel is 97.4%.
Embodiment 4
The Leaching Molybdenum from the molybdenum nickel minerals that present embodiment is enumerated and the technique of nickel are carried out fragmentation, grinding with molybdenum nickel raw ore, and obtaining granularity is 300 purpose molybdenum nickel minerals powder, are that to join volume be 12m for 98% sulfuric acid, 2 tons molybdenum nickel minerals powder and 8 tons of water with concentration
3Pressure reaction still in, catalyzer is the cerium cobalt salt, the add-on of cerium cobalt salt is 20kg, fully mixes, and passes into oxygen and carries out Oxidation Leaching; The main component of molybdenum nickel minerals: molybdenum is 5.5%, and nickel is 4.2%, and sulphur is 20%, is heated to 150 ℃, keeps reaction pressure at 0.8Mpa, and oxygen partial pressure is 0.33MPa, and pH is 3 in the pressure reaction still, reacts 5 hours.
Above-mentioned molybdenum nickel minerals powder is after the pressure reaction still reaction is complete, and normal pressure alkali soaks again.Detect molybdenum nickel minerals powder and only have 0.20% the unconverted molybdenum oxide (MoO of being of molybdenum
3), the Recycle of molybdenum rate is 96.4%, and molybdenum nickel minerals powder only has 0.08% nickel to enter the slag phase, and the rate of recovery of nickel is 98.1%.
Embodiment 5
The Leaching Molybdenum from the molybdenum nickel minerals that present embodiment is enumerated and the technique of nickel are carried out fragmentation, grinding with molybdenum nickel raw ore, and obtaining granularity is 300 purpose molybdenum nickel minerals powder, are that to join volume be 12m for 98% sulfuric acid, 2 tons molybdenum nickel minerals powder and 8 tons of water with concentration
3Pressure reaction still in, catalyzer is iron(ic) chloride, the add-on of iron(ic) chloride is 15kg, fully mixes, and passes into oxygen and carries out Oxidation Leaching; The main component of molybdenum nickel minerals: molybdenum is 5.5%, and nickel is 4.2%, and sulphur is 20%, is heated to 146 ℃, keeps reaction pressure at 0.8Mpa, and oxygen partial pressure is 0.38MPa, and pH is 3 in the pressure reaction still, reacts 5 hours.
Above-mentioned molybdenum nickel minerals powder is after the pressure reaction still reaction is complete, and normal pressure alkali soaks again.Detect molybdenum nickel minerals powder and only have 0.30% the unconverted molybdenum oxide (MoO of being of molybdenum
3), the Recycle of molybdenum rate is 95.3%, and molybdenum nickel minerals powder only has 0.11% nickel to enter the slag phase, and the rate of recovery of nickel is 97.4%.
Embodiment 6
The Leaching Molybdenum from the molybdenum nickel minerals that present embodiment is enumerated and the technique of nickel are carried out fragmentation, grinding with molybdenum nickel raw ore, and obtaining granularity is 400 purpose molybdenum nickel minerals powder; Be that 98% sulfuric acid and 3Kg cupric chloride are mixed with 8m with concentration
3Solution is with 2 tons above-mentioned molybdenum nickel minerals powder and 8m
3It is 12m that solution joins volume
3Pressure reaction still in, fully mix, pass into oxygen and carry out Oxidation Leaching; The main component of molybdenum nickel minerals: molybdenum is 5.5%, and nickel is 4.2%, and sulphur is 20%, is heated to 125 ℃, keeps reaction pressure at 0.8Mpa, and oxygen partial pressure is 0.58MPa, and pH is 2 in the pressure reaction still, reacts 4 hours.
Above-mentioned molybdenum nickel minerals powder is after the pressure reaction still reaction is complete, and normal pressure alkali soaks again.Detect molybdenum nickel minerals powder and only have 0.10% the unconverted molybdenum oxide (MoO of being of molybdenum
3), the Recycle of molybdenum rate is 99.1%, and molybdenum nickel minerals powder only has 0.08% nickel to enter the slag phase, and the rate of recovery of nickel is 98.1%.
Claims (10)
1. the technique of pressure leaching molybdenum and nickel from the molybdenum nickel minerals is characterized in that, may further comprise the steps: molybdenum nickel minerals powder, catalyzer, acid solution are added in the pressure reaction still, and solid-liquid mixes logical oxygen pressing Leaching Molybdenum nickel;
Described catalyzer is the soluble compound of variable valency metal.
As claimed in claim 1 from the molybdenum nickel minerals technique of pressure leaching molybdenum and nickel, it is characterized in that described catalyzer is the soluble compound of variable valency metal, variable valency metal is copper, iron, cerium, manganese or cobalt.
As claimed in claim 1 from the molybdenum nickel minerals technique of pressure leaching molybdenum and nickel, it is characterized in that described acid solution is dilution heat of sulfuric acid.
4. the pressure leaching molybdenum from the molybdenum nickel minerals described in claim 1 or 2 and the technique of nickel is characterized in that, the concentration of described catalyzer in reactor is 1～20g/L.
As claimed in claim 1 from the molybdenum nickel minerals technique of pressure leaching molybdenum and nickel, it is characterized in that described Leaching reaction pressure is 0.2～0.9MPa, wherein oxygen partial pressure is 0.3～0.6MPa.
6. the pressure leaching molybdenum from the molybdenum nickel minerals described in claim 1 or 5 and the technique of nickel is characterized in that, described Leaching reaction carries out under less than 5 condition in the pH value.
7. the pressure leaching molybdenum from the molybdenum nickel minerals described in claim 1 or 5 and the technique of nickel is characterized in that, described Leaching reaction temperature is 120 ℃～160 ℃.
8. the pressure leaching molybdenum from the molybdenum nickel minerals described in claim 1 or 6 and the technique of nickel is characterized in that, the described Leaching reaction time is 3～6 hours.
As claimed in claim 1 from the molybdenum nickel minerals technique of pressure leaching molybdenum and nickel, it is characterized in that the granularity of described molybdenum nickel minerals powder is 100～400 orders.
As claimed in claim 1 from the molybdenum nickel minerals technique of pressure leaching molybdenum and nickel, it is characterized in that molybdenum nickel minerals powder and solution solid-liquid mass ratio are 1:2～6 in the described adding reactor.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105478694A (en) * | 2015-12-07 | 2016-04-13 | 铜陵市明诚铸造有限责任公司 | Preparation process of tundish covering agent for high-aluminum steel |
| CN112210679A (en) * | 2020-10-23 | 2021-01-12 | 中国恩菲工程技术有限公司 | Method for preparing nickel sulfate from nickel hydroxide cobalt |
| CN113380558A (en) * | 2021-06-21 | 2021-09-10 | 贵州化工建设有限责任公司 | Slag pretreatment method and preparation method of supercapacitor electrode material |
| CN115305363A (en) * | 2022-08-16 | 2022-11-08 | 紫金矿业集团股份有限公司 | Method for efficiently oxidizing molybdenite in sulfuric acid and ferric sulfate solution under normal pressure condition |
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|---|---|---|---|---|
| US20030031614A1 (en) * | 2001-05-09 | 2003-02-13 | Litz John E. | Autoclave control mechanisms for pressure oxidation of molybdenite |
| CN102676803A (en) * | 2012-06-05 | 2012-09-19 | 南京元泰环保科技有限公司 | Resource utilization method for catalytic oxidation leaching of molybdenum and nickel from molybdenum-nickel ore |
-
2013
- 2013-01-16 CN CN2013100152368A patent/CN103014331A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030031614A1 (en) * | 2001-05-09 | 2003-02-13 | Litz John E. | Autoclave control mechanisms for pressure oxidation of molybdenite |
| CN102676803A (en) * | 2012-06-05 | 2012-09-19 | 南京元泰环保科技有限公司 | Resource utilization method for catalytic oxidation leaching of molybdenum and nickel from molybdenum-nickel ore |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105478694A (en) * | 2015-12-07 | 2016-04-13 | 铜陵市明诚铸造有限责任公司 | Preparation process of tundish covering agent for high-aluminum steel |
| CN112210679A (en) * | 2020-10-23 | 2021-01-12 | 中国恩菲工程技术有限公司 | Method for preparing nickel sulfate from nickel hydroxide cobalt |
| CN113380558A (en) * | 2021-06-21 | 2021-09-10 | 贵州化工建设有限责任公司 | Slag pretreatment method and preparation method of supercapacitor electrode material |
| CN115305363A (en) * | 2022-08-16 | 2022-11-08 | 紫金矿业集团股份有限公司 | Method for efficiently oxidizing molybdenite in sulfuric acid and ferric sulfate solution under normal pressure condition |
| CN115305363B (en) * | 2022-08-16 | 2023-10-20 | 紫金矿业集团股份有限公司 | Method for efficiently oxidizing molybdenite in sulfuric acid and ferric sulfate solution under normal pressure |
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