SE544907C2 - Method for recycling metals from carbon-containing waste molybdenum catalysts - Google Patents
Method for recycling metals from carbon-containing waste molybdenum catalystsInfo
- Publication number
- SE544907C2 SE544907C2 SE2050961A SE2050961A SE544907C2 SE 544907 C2 SE544907 C2 SE 544907C2 SE 2050961 A SE2050961 A SE 2050961A SE 2050961 A SE2050961 A SE 2050961A SE 544907 C2 SE544907 C2 SE 544907C2
- Authority
- SE
- Sweden
- Prior art keywords
- carbon
- containing waste
- molybdenum
- molybdenum catalysts
- ranging
- Prior art date
Links
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 229910052750 molybdenum Inorganic materials 0.000 title claims abstract description 74
- 239000011733 molybdenum Substances 0.000 title claims abstract description 74
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 66
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 239000003054 catalyst Substances 0.000 title claims abstract description 55
- 239000002699 waste material Substances 0.000 title claims abstract description 52
- 150000002739 metals Chemical class 0.000 title claims abstract description 28
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 27
- 239000002184 metal Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000004064 recycling Methods 0.000 title claims abstract description 23
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000002386 leaching Methods 0.000 claims abstract description 33
- 239000003513 alkali Substances 0.000 claims abstract description 31
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000011684 sodium molybdate Substances 0.000 claims abstract description 17
- 235000015393 sodium molybdate Nutrition 0.000 claims abstract description 17
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000012670 alkaline solution Substances 0.000 claims abstract description 16
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 15
- 239000000243 solution Substances 0.000 claims abstract description 13
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 10
- 239000000706 filtrate Substances 0.000 claims abstract description 10
- CMZUMMUJMWNLFH-UHFFFAOYSA-N sodium metavanadate Chemical compound [Na+].[O-][V](=O)=O CMZUMMUJMWNLFH-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052938 sodium sulfate Inorganic materials 0.000 claims abstract description 10
- 235000011152 sodium sulphate Nutrition 0.000 claims abstract description 10
- 229910004619 Na2MoO4 Inorganic materials 0.000 claims abstract description 7
- 239000012141 concentrate Substances 0.000 claims abstract description 5
- 239000007832 Na2SO4 Substances 0.000 claims abstract description 4
- 229910052979 sodium sulfide Inorganic materials 0.000 claims abstract description 4
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 claims abstract description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 23
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 23
- 229910052717 sulfur Inorganic materials 0.000 claims description 22
- 239000011593 sulfur Substances 0.000 claims description 22
- 229910000476 molybdenum oxide Inorganic materials 0.000 claims description 5
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims 1
- 229960003010 sodium sulfate Drugs 0.000 claims 1
- 238000007796 conventional method Methods 0.000 abstract description 4
- 229910019501 NaVO3 Inorganic materials 0.000 abstract 1
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 abstract 1
- 238000011084 recovery Methods 0.000 description 29
- 229910052720 vanadium Inorganic materials 0.000 description 18
- 239000002585 base Substances 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 229910001868 water Inorganic materials 0.000 description 6
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 4
- -1 molybdenum vanadium nickel carbon sulfur Chemical compound 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 2
- 230000009172 bursting Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hcl hcl Chemical compound Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/20—Obtaining niobium, tantalum or vanadium
- C22B34/22—Obtaining vanadium
- C22B34/225—Obtaining vanadium from spent catalysts
-
- 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
- C22B34/00—Obtaining refractory metals
- C22B34/30—Obtaining chromium, molybdenum or tungsten
- C22B34/34—Obtaining molybdenum
- C22B34/345—Obtaining molybdenum from spent catalysts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/009—General processes for recovering metals or metallic compounds from spent catalysts
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A method for recycling metals from carbon-containing waste molybdenum catalysts is used to solve the problem of the conventional method for recovering metals from the waste molybdenum catalysts being not suitable for the carbon-containing waste molybdenum catalysts. The method includes mixing the-carbon-containing waste molybdenum catalysts with an alkaline solution in a volume ratio ranging from 1:1 to 1:4, followed by an alkali leaching reaction at a temperature ranging from 100°C to 400°C and a pressure ranging from 3 kg/cm2 to 15 kg/cm2 for a time period ranging from 1 hour to 5 hours, obtaining a alkali leaching solution. The alkali leaching solution is filtered to obtain a carbon/nickel concentrate and a filtrate including sodium molybdate (Na2MoO4), sodium metavanadate (NaVO3) and sodium sulfide (Na2SO4). Finally, molybdenum oxide (MoO3) formed from sodium molybdate, vanadium pentoxide (V2O5) formed from sodium metavanadate, and sodium sulfide are recovered from the filtrate.
Description
l. Field of the Invention id="p-1" id="p-1"
id="p-1"
[0001] The present invention relates to a method for recycling metals and, more particularly, to a method for recycling metals from carbon-containing Waste molybdenum catalysts. 2. Description of the Related Art id="p-2" id="p-2"
id="p-2"
[0002] With the vigorous development of the petrochernistry industry, catalysts used for hydrodesulfurization (HDS) have been used in large quantities. With carbon as the vehicle, the catalysts absorb elements such as iron (Fe) and phosphorus (P), forrning inactivated Waste molybdenum catalysts. id="p-3" id="p-3"
id="p-3"
[0003] Valuable metals such as vanadium (V) and molybdenum (Mo) are still present in the Waste molybdenum catalysts; and therefore, by recovering the valuable metals from the Waste molybdenum catalysts, the economic benefits of the Waste molybdenum catalysts can be exerted. As an example, in the conventional method for recycling metals form Waste molybdenum catalysts, the Waste molybdenum catalysts are mixed With a base, followed by a roasting reaction. A filtrate is obtained after decantatingthe roasted product. Finally, hydrochloric acid (I-ICl) is used to form molybdenum oxide (MoOg) from sodium molybdate (Na2MoO4) in the filtrate. That is, molybdenum in the forrn of molybdenum oxide can be recovered. id="p-4" id="p-4"
id="p-4"
[0004] However, the roasting reaction should be carried out at a high temperature above 850°C. Especially When carbon is present in the Waste molybdenum catalyst, the temperature of the roasting reaction bursts instantly and is difficult to control. Hence, there is a need of providing a method for recycling metals from carbon-containing Waste molybdenum catalysts.
SUMMARY OF THE INVENTION id="p-5" id="p-5"
id="p-5"
[0005] It is therefore the objective of the present invention to provide a method for recycling metals from carbon-containing Waste molybdenum catalysts, in Which the roasting reaction can be omitted. id="p-6" id="p-6"
id="p-6"
[0006] One embodiment of the invention discloses the method for recycling metals from carbon-containing Waste molybdenum catalysts. The method for recycling metals from carbon-containing Waste molybdenum catalysts providing a carbon-containing Waste molybdenum catalysts With molybdenum (Mo), vanadium (V), nickel (Ni), carbon (C) and sulfur (S). The carbon-containing Waste molybdenum catalysts ismixed With an alkaline solution in a volume ratio ranging from 1: to l: 4, followed by an alkali leaching reaction at a temperature ranging from 100" C to 400 "C and a pressure ranging from 3 kg/cm2 to 15 kg/cm2 for a time period ranging from l hour to 5 hours, obtaining an alkali leaching solution The alkali leaching solution is filtered to obtain a carbon/nickel concentrate and a filtrate including sodium molybdate (Na2MoO4), sodium metavanadate (N aVOg) and sodium sulf1de (N a2SO4). Finally, molybdenum oxide (MoOg) formed from sodium molybdate vanadium pentoxide (V2O5) formed from sodium metavanadate and sodium sulfide are recovered from the filtrate. id="p-7" id="p-7"
id="p-7"
[0007] Accordingly, in the method for recycling metals from carbon-containing Waste molybdenum catalysts according to the present invention, the high-pressure alkali leaching reaction can replace the high temperature roasting reaction of the conventional method for recycling metals from Waste molybdenum catalysts. Therefore, the reaction temperature can be loWered, preventing carbon in the carbon-containing Waste molybdenum catalysts from bursting instantly due to the high temperature roasting reaction. That is, it is believed that the method for recycling metals from carbon-containing Waste molybdenum catalystsaccording to the present invention is signifrcantly frugal of energy and cost, but highly security. Moreover, sulfur in the carbon-containing Waste molybdenum catalysts can be recover in the forrn of sodium sulfate. Therefore, air pollution resulting from the effusion of sulfur oxide (SOX) or hydrogen sulfur (H25) can be effectively avoided. ___[0008] In a preferred forrn shown, the alkaline solution can be an aqueous solution forrned by dissolving a strong base in Water. the strong base As such, few amount of the alkaline solution is needed to react With molybdenum disulf1de, as Well as vanadium pentoxidethe, in the carbon-containing Waste molybdenum catalysts, decreasing the volume of the alkaline reaction. id="p-9" id="p-9"
id="p-9"
[0009] f ' >_. carbon-containing Waste molybdenum catalysts mixed With the alkaline solution in the volume ratio ranging from l: 2 to l: 4. As such, the recovery rates of molybdenum and vanadium can achieve more than 99%, While the recovery rate of sulfur can achieve more than 95%.[0010] In a preferred form shown, the alkali leaching reaction can be carried out at the temperature ranging from l50°C to 300°C. As such, the recovery rates of molybdenum and vanadium can achieve more than 99%, while the recovery rate of sulfur can achieve more than 95%. id="p-11" id="p-11"
id="p-11"
[0011] In a preferred form shown, the alkali leaching reaction can be carried out at the pressure ranging from 10 kg/cm2 to 15 kg/cm2. As such, the recovery rates of molybdenum and vanadium can achieve more than 99%, while the recovery rate of sulfur can achieve more than 95%. id="p-12" id="p-12"
id="p-12"
[0012] In a preferred form shown, the alkali leaching reaction can be carried out for the time period ranging from 2 hours to 4 hours. As such, the recovery rates of molybdenum and vanadium can achieve more than 99%, while the recovery rate of sulfur can achieve more than 95%.
BRIEF DESCRIPTION OF THE DRAWINGS id="p-13" id="p-13"
id="p-13"
[0013] The present invention will become more fully understood from the detailed description given hereinafter and the accompanying drawings which are given by way of illustration only, and thus are not lirnitative of the present invention, and wherein: id="p-14" id="p-14"
id="p-14"
[0014] FIG. l depicts a flow chart representing the method for recycling metals from carbon-containing waste molybdenum catalysts according to the present invention.
DETAILED DESCRIPTION OF THE INVENTION id="p-15" id="p-15"
id="p-15"
[0015] The term “carbon-containing Waste molybdenum catalysts” recites according to the present invention, besides carbon (C) and molybdenum (Mo), can also include valuable metals such as vanadium (V) and nickel (Ni). As an example, the carbon-containing Waste molybdenum catalysts can include, but not lin1ited to, 10-20 Wt% of molybdenum (Mo), 1-5 Wt% of vanadium (V), 1-3 Wt% of nickel (Ni), 50-60 Wt% of carbon (C) and 10-20 Wt% of sulfur (S), While the rest is impurities, Which can be appreciated by a person having ordinary skill in the art. id="p-16" id="p-16"
id="p-16"
[0016] Referring of FIG. 1, a method for recycling metals from carbon-containing Waste molybdenum catalysts according to an embodiment of the present invention can include a step of mixing S1, a step of leaching S2 and a step of recovering S id="p-17" id="p-17"
id="p-17"
[0017] Specifically, in the step of mixing S1, the carbon-containing Waste molybdenurn catalysts can be mixed With an alkaline solution to form a rnixture. The alkaline solution can be an aqueous solution formed by dissolving a strong base in Water. ^ strong base _ “ ^ sodium hydroxide (NaOH), \ Moreover, the strong base can form the aqueous solution With a concentration ranging from 3% to 15%. That is, the strong base ranging from 3 to 15 grams (g) is dissolved to Water of 100 milliliter (mL) to form the alkaline solution. she carbon-containing Waste molybdenum catalysts and the alkaline solution are mixed in a volume ratio ranging from l: to 1: 4 to from the mixture. í*;“;.zïçszf:;lï.ïíj,', tim “ id="p-19" id="p-19"
id="p-19"
[0019] In the step of leaching S2, the mixture can be placed in an autoclave, and an alkali leaching reaction can be carried out at a relatively low temperature and a relatively high pressure, forming an alkali leaching solution. At this time, molybdenum, Which is usually present in the form of molybdenum disulfide (MoSz), in the carbon-containing Waste molybdenum catalysts can form sodium molybdate (Na2MoO4) according to chemical equation (1), While vanadium, Which is usually present in the form of vanadium pentoxide (V2O5), in the carbon-containing Waste molybdenum catalysts can form sodium metavanadate (NaVOs) according to chemical equation (2). Moreover, both sodium molybdate and vanadium pentoxide are dissolved in the alkaline solution.
M0 S2 + ÖNaOH -l- 4. 5 O2_>Na2MoO4~|-2Na2SÛ4~|-3H2Û EQUATION(1) VzOs +2NaOH->2NaVOs +H2O EQUATION (2) id="p-20" id="p-20"
id="p-20"
[0020] In this embodiment, the alkali leaching reaction is carried out at a temperature ranging from l00°C to 400°C and a pressure ranging from 3 kg/cmz to 15 kg/cmz for a time period ranging from 1 hour to 5 hours, obtaining the alkali leaching solution. Preferably, the alkali leaching reaction is carried out at the temperature ranging from l50°C to 400°C and the pressure ranging from 10 kg/cmz to 15 kg/cmz for the time period ranging from 2 hours to 4 hours. id="p-21" id="p-21"
id="p-21"
[0021] The step of recovering S3 ea§s§~~~~include§ a substep of Ni recovering S31. In the substep of Ni recovering S31, the alkali leaching solution can be filtrated using a 100-mesh filter. Thus, a carbon/nickel concentrate separated from a f1ltrate can form a carbon bar by subsequent processing process and can be used for fuel. id="p-22" id="p-22"
id="p-22"
[0022] The filtrate can include molybdenum in the form of sodium molybdate, as Well as sulfur in the form of sodium sulfate (Na2SO4). Moreover, in the case that the carbon-containing Waste molybdenum catalysts include vanadium, the filtrate can also include vanadium in the form of sodium metavanadate. id="p-23" id="p-23"
id="p-23"
[0023] Therefore, the step of recovering S3 ea§s§~~~~also include;\;_ a s substep of V recovering S32, a substep of Mo recovering S33 and substep of S recovering S34. In the substep of V recovering S32, sodium molybdate molybdenum oxide (MoOg) by the use of hydrochloric acid (HCl) in an acidic environment according to chemical equation (3). In the substep of Mo recovering S33, sodium metavanadate vanadium pentoxide (VzOs) by the use of sulfuric acid (H2SO4) in an acidic environment according to chemical equation (4). Finally, in the substep of S recovering S34, sodium sulfate is supersaturated to participate in the form of sodium sulfate.
Na2MoO4 + HCl->MoOs + NaCl + H20 EQUATION (3) 2NaVO3 + H2SO4->Na2SO4 + V2O5 + H20 EQUATION (4) id="p-24" id="p-24"
id="p-24"
[0024] To evaluate the valuable metals of molybdenum, vanadium and nickel, as Well as carbon and sulfur, can be effectively recovered according to the method for recycling metals from carbon-containing Waste molybdenum catalysts, the following trials are carried out using the carbon-containing Waste molybdenum catalysts With 15 Wt% of molybdenum, 3.5 Wt% of vanadium, l.l Wt% of nickel, 50.1 Wt% of carbon and 10 Wt% of sulfur, While the rest being impurities. id="p-25" id="p-25"
id="p-25"
[0025] Tria1 (A). id="p-26" id="p-26"
id="p-26"
[0026] In trial (A), 1000 grams (g) of the carbon-containing Wastemolybdenum catalysts is mixed With the alkaline solution according to the volume ratio shown in TABLE 1. The alkali leaching reaction is then carried out at the temperature of 150°C and the pressure of 10 kg/cm2 for the time period of 2 hours. Finally, recovery rates of molybdenum, vanadium, nickel, carbon and sulfur in the alkali leaching solution are measured. TABLE 1 Recovery Yield (grams) Volume Group [Recovery Rate (%)] Ratio molybdenum vanadium nickel carbon sulfur 145.5 33.3 10.7 498.1 95.4 A1 1: 1 [97.0%] [95.1%] [97.3%] [99.4%] [95.4%] 148.5 34.7 10.8 498.5 95.8 A2 1: 2 [99.0%] [99.1%] [98.2%] [99.5%] [95.8%] 148.0 34.7 10.8 498.9 96.6 A3 1: 3 [98.7%] [99.1%] [98.2%] [99.6%] [96.6%] 149.1 34.8 10.4 498.8 97.1 A4 1: 4 [99.4%] [99.4%] [94.5%] [99.6%] [97.1%] id="p-27" id="p-27"
id="p-27"
[0027] Referring to TABLE 1, in the case that the volume ratio higher than 1: 2, the recovery rates of molybdenum and vanadium can achieve more than 99%. The recovery rate of sulfur can achieve more than 95%. id="p-28" id="p-28"
id="p-28"
[0028] Trial (B). [0029] In trial (B), 1000 grams (g) of the carbon-containing Waste molybdenum catalysts is mixed With the alkaline solution according to the volume ratio of 1: 2. The alkali leaching reaction is then carried out at the temperature shown in TABLE 2 and the pressure of 10 kg/cm2 for the time period of 2 hours. Finally, recovery rates of molybdenum, vanadium, nickel, carbon and sulfur in the alkali leaching solution are measured.
TABLE 2 Recovery Yield (grams) Temperature Group [Recovery Rate (%)] (°C) molybdenum vanadium nickel carbon sulfur 146.5 32.8 10.5 499.1 93.4 Bl 100 [97.3%] [93.7%] [95.5%] [99.6%] [93.4%] 148.5 34.7 10.8 498.5 95.8 B2 150 [99.0%] [99.1%] [98.2%] [99.5%] [95.8%] 149.1 34.7 10.6 498.3 96.9 B3 200 [99.4%] [99.1%] [96.4%] [99.5%] [96.9%] 149.2 34.8 10.7 498.6 98.1 B4 300 [99.5%] [99.4%] [97.3%] [99.5%] [98.1%] [0030] Referring to TABLE 2, in the case that the temperature higher 10 than 150°C, the recovery rates of molybdenum and vanadium can achievemore than 99%. The recovery rate of sulfur can achieve more than 95%. id="p-31" id="p-31"
id="p-31"
[0031] Tfia1 (c). id="p-32" id="p-32"
id="p-32"
[0032] In trial (C), 1000 grams (g) of the carbon-containing Waste molybdenum catalysts is mixed With the alkaline solution according to the volume ratio of 1: 2. The alkali leaching reaction is then carried out at the temperature of 150°C and the pressure shown in TABLE 3 for the time period of 2 hours. Finally, recovery rates of molybdenum, vanadium, nickel, carbon and sulfur in the alkali leaching solution are measured. TABLE 3 Recovery Yield (grams) Pressure Group [Recovery Rate (%)] (kg/cm2) molybdenum vanadium nickel carbon sulfur 145.5 33.8 10.6 498.9 94.4 Cl 3 [97.0%] [96.6%] [96.4%] [99.6%] [94.4%] 148.5 34.7 10.8 498.5 95.8 C2 10 [99.0%] [99.1%] [98.2%] [99.5%] [95.8%] 148.9 34.9 10.7 499.3 95.9 C3 13 [99.3%] [99.7%] [97.3%] [99.7%] [95.9%] 148.7 34.8 10.7 498.9 96.1 C4 15 [99.1%] [99.4%] [97.3%] [99.6%] [96.1%] [0033] Referring to TABLE 3, in the case that the pressure higherthan 10 kg/cmz, the recovery rates of molybdenum and vanadium can achieve more than 99%. The recovery rate of sulfur can achieve more than 95%. id="p-34" id="p-34"
id="p-34"
[0034] Tria1 (D). id="p-35" id="p-35"
id="p-35"
[0035] In trial (D), 1000 grams (g) of the carbon-containing Waste molybdenum catalysts is mixed With the alkaline solution according to the volume ratio of 1: 2. The alkali leaching reaction is then carried out at the temperature of 150°C and the pressure of 10 kg/cm2 for the time period shown in TABLE 4. Finally, recovery rates of molybdenum, vanadium, nickel, carbon and sulfur in the alkali leaching solution are measured. TABLE 4 Time Recovery Yield (grams) Group Period [Recovery Rate (%)] (hours) molybdenum vanadium nickel carbon sulfur 145.5 32.9 10.7 498.9 92.4 D1 1 [97.0%] [94.0%] [97.3%] [99.6%] [92.4%] 148.5 34.7 10.8 498.5 95.8 D2 2 [99.0%] [99.1%] [98.2%] [99.5%] [95.8%] 149.4 34.8 10.7 499.3 95.8 D3 3 [99.6%] [99.4%] [97.3%] [99.7%] [95.8%] D4 4 149.7 34.8 10.8 498.9 96.[99.8%] [99.4%] [98.2%] [99.6%] [96.5%] id="p-36" id="p-36"
id="p-36"
[0036] Referring to TABLE 4, in the case that the time period more than 2 hours, the recovery rates of molybdenum and vanadium can achieve more than 99%. The recovery rate of sulfur can achieve more than 95%. id="p-37" id="p-37"
id="p-37"
[0037] Accordingly, in the method for recycling metals from carbon-containing Waste molybdenum catalysts according to the present invention, the high-pressure alkali leaching reaction can replace the high temperature roasting reaction of the conventional method for recycling metals from Waste molybdenum catalysts. Therefore, the reaction temperature can be lowered, preventing carbon in the carbon-containing Waste molybdenum catalysts from bursting instantly due to the high temperature roasting reaction. That is, it is believed that the method for recycling metals from carbon-containing Waste molybdenum catalysts according to the present invention is significantly frugal of energy and cost, but highly security. id="p-38" id="p-38"
id="p-38"
[0038] Moreover, sulfur in the carbon-containing Waste molybdenum catalysts can be recover in the form of sodium sulfate. Therefore, air pollution resulting from the effusion of sulfur oxide (SOX) or hydrogen sulfur (H2S) can be effectively avoided. carbon in the id="p-39" id="p-39"
id="p-39"
[0039] In addition, carbon-containing Wastemolybdenum catalysts can be effectively recovered (With the recovery rate achieving more than 99%). The recovered carbon/nickel concentrate can form the carbon bar by subsequent processing process and can be used for fuel. id="p-40" id="p-40"
id="p-40"
[0040] Although the invention has been described in detail With reference to its presently preferable embodiment, it Will be understood by one of ordinary skill in the art that various modifications can be made Without departing from the spirit and the scope of the invention, as set forth in the appended claims.
Claims (1)
1. A method for recycling metals from carbon-containing Waste molybdenum catalysts, comprising: providing carbon-containing waste molybdenum catalysts With molybdenum (Mo), vanadium (V), nickel (Ni), carbon (C) and sulfur (S); mixing the carbon-containing Waste molybdenum catalysts and an alkaline solution in a volume ratio ranging from 1: jpto 1: 4, followed by an alkali leaching reaction at a temperature ranging from 100°C to 400 °C and a pressure ranging from 3 kg/cmz to 15 kg/cmz for a time period ranging from 1 hour to 5 hours, obtaining an alkali leaching solution, filtering the alkali leaching solution to obtain a carbon/nickel concentrate and a filtrate including sodium molybdate (Na2MoO4), sodium metavanadate (NaVOg) and sodium sulfide (Na2SO4); stwvanadium pentoxide (V2O5) from sïfïïufï; ::;f;š_;3É_.:_É:Life ::;::fïï sodium metavanadate s recovering molybdenum oxide, vanadium pentoxide and sodiumsulfate from the filtrate. The method for recycling metals from carbon-containing Waste molybdenum catalysts as claimed in claim Wherein the alkaline solution is the aqueous solution With a concentration ranging from 3% to 15%. The method for recycling metals from carbon-containing Waste molybdenum catalysts as claimed in claim 1, Wherein the alkali leaching reaction is carried out at the temperature ranging from 150°C to 300°C. The method for recycling metals from carbon-containing Waste z molybdenum catalysts as claimed in claim 1, Wherein the alkali leaching reaction is carried out at the pressure ranging from 10 kg/cmz to 15 kg/cmz. The method for recycling metals from carbon-containing Waste molybdenum catalysts as claimed in claim 1, Wherein the alkali leaching reaction is carried out for the time period ranging from 2 hours to 4 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE2050961A SE544907C2 (en) | 2020-08-19 | 2020-08-19 | Method for recycling metals from carbon-containing waste molybdenum catalysts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE2050961A SE544907C2 (en) | 2020-08-19 | 2020-08-19 | Method for recycling metals from carbon-containing waste molybdenum catalysts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE2050961A1 SE2050961A1 (en) | 2022-02-20 |
| SE544907C2 true SE544907C2 (en) | 2022-12-27 |
Family
ID=80738620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE2050961A SE544907C2 (en) | 2020-08-19 | 2020-08-19 | Method for recycling metals from carbon-containing waste molybdenum catalysts |
Country Status (1)
| Country | Link |
|---|---|
| SE (1) | SE544907C2 (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4495157A (en) * | 1983-09-02 | 1985-01-22 | Amax Inc. | Recovery of metal values from spent hydrodesulfurization catalysts |
| US4666685A (en) * | 1986-05-09 | 1987-05-19 | Amax Inc. | Selective extraction of molybdenum and vanadium from spent catalysts by oxidative leaching with sodium aluminate and caustic |
| US4883601A (en) * | 1988-08-30 | 1989-11-28 | Union Oil Company Of California | Process for purifying an aqueous, hydrogen sulfide-scrubbing solution |
| KR100615773B1 (en) * | 1998-05-08 | 2006-08-25 | 쉘 오일 캄파니 | Recovery of Molybdenum and Vanadium Metals by Alkaline Leaching from Used Catalysts |
| KR20080065260A (en) * | 2008-06-18 | 2008-07-11 | 주식회사 엠케이 | Energy-saving eco-friendly valuable metal extraction process technology |
| WO2016187993A1 (en) * | 2015-05-22 | 2016-12-01 | 北京赛科康仑环保科技有限公司 | Method for recovering and disposing waste scr denitrification catalyst |
| CN106480320A (en) * | 2016-11-23 | 2017-03-08 | 河钢股份有限公司承德分公司 | A kind of method for reclaiming valuable metal from discarded SCR denitration |
| CN108359799A (en) * | 2018-03-09 | 2018-08-03 | 王永平 | A kind of method of green reclaim titanium containing tungsten vanadium catalyst |
| CN108893611B (en) * | 2018-07-27 | 2020-01-21 | 成都虹波钼业有限责任公司 | Method for extracting molybdenum from molybdenum-removing slag to prepare sodium molybdate |
-
2020
- 2020-08-19 SE SE2050961A patent/SE544907C2/en unknown
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4495157A (en) * | 1983-09-02 | 1985-01-22 | Amax Inc. | Recovery of metal values from spent hydrodesulfurization catalysts |
| US4666685A (en) * | 1986-05-09 | 1987-05-19 | Amax Inc. | Selective extraction of molybdenum and vanadium from spent catalysts by oxidative leaching with sodium aluminate and caustic |
| US4883601A (en) * | 1988-08-30 | 1989-11-28 | Union Oil Company Of California | Process for purifying an aqueous, hydrogen sulfide-scrubbing solution |
| KR100615773B1 (en) * | 1998-05-08 | 2006-08-25 | 쉘 오일 캄파니 | Recovery of Molybdenum and Vanadium Metals by Alkaline Leaching from Used Catalysts |
| KR20080065260A (en) * | 2008-06-18 | 2008-07-11 | 주식회사 엠케이 | Energy-saving eco-friendly valuable metal extraction process technology |
| WO2016187993A1 (en) * | 2015-05-22 | 2016-12-01 | 北京赛科康仑环保科技有限公司 | Method for recovering and disposing waste scr denitrification catalyst |
| CN106480320A (en) * | 2016-11-23 | 2017-03-08 | 河钢股份有限公司承德分公司 | A kind of method for reclaiming valuable metal from discarded SCR denitration |
| CN108359799A (en) * | 2018-03-09 | 2018-08-03 | 王永平 | A kind of method of green reclaim titanium containing tungsten vanadium catalyst |
| CN108893611B (en) * | 2018-07-27 | 2020-01-21 | 成都虹波钼业有限责任公司 | Method for extracting molybdenum from molybdenum-removing slag to prepare sodium molybdate |
Also Published As
| Publication number | Publication date |
|---|---|
| SE2050961A1 (en) | 2022-02-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4339647B2 (en) | Method for producing tetravalent vanadyl sulfate aqueous solution | |
| Wang et al. | Recent advances in the recovery of transition metals from spent hydrodesulfurization catalysts | |
| CN103449522B (en) | A kind of chromium residue produces the method for chromic salt | |
| Guo et al. | Microemulsion extraction: An efficient way for simultaneous detoxification and resource recovery of hazardous wastewater containing V (V) and Cr (VI) | |
| CN107849639B (en) | Method for recovering vanadium, method for producing redox flow battery electrolyte, apparatus for recovering vanadium, and apparatus for producing redox flow battery electrolyte | |
| JP2019099874A (en) | Recovery method of lithium | |
| CN103849765B (en) | A kind of precipitate and separate and the method reclaiming vanadium and chromium in vanadium chromium solution | |
| CN116143174B (en) | A kind of method for preparing ammonium paratungstate by short process of scheelite | |
| CN114314661B (en) | Method for producing high-purity ammonium metavanadate by deep cobalt removal of vanadium raw material | |
| JPWO2009151147A1 (en) | Method for recovering valuable metals from spent catalyst | |
| AU2011341872A1 (en) | Method for enrichment-recovering ferronickel from raw material containing nickel, method for recovering nickel from enriched ferronickel, and method for recycling solution containing iron produced from same | |
| CN114959261B (en) | A method for recovering tungsten, molybdenum, nickel, and cobalt from multi-metal alloys in a full wet process | |
| CA3211531C (en) | Method for producing secondary battery material from black mass | |
| CN103290221A (en) | Method for recovering copper, arsenium and antimony from black copper sludge | |
| CN114583314A (en) | Method for recycling waste lithium cobalt oxide battery by using multi-element composite supercritical carbon dioxide system | |
| SE544907C2 (en) | Method for recycling metals from carbon-containing waste molybdenum catalysts | |
| CN108285978A (en) | A kind of recovery method of the palladium from palladium-containing catalyst | |
| CN118531215A (en) | Metal recovery method for waste catalyst containing aluminum, nickel, molybdenum, vanadium and iron | |
| CN111485105A (en) | Method for recovering acid liquor and separating vanadium in process of reducing, acid leaching and vanadium-containing waste catalyst | |
| US4214896A (en) | Process for producing cobalt metal powder | |
| CN115818684B (en) | Method for high-value utilization of aluminum resources and enrichment of valuable metals in waste fluid catalytic cracking catalyst | |
| JP4210475B2 (en) | Method for recovering cobalt from scrap | |
| KR101439626B1 (en) | Ferro-Nickel recovery method by recycling the leached and washed solution | |
| KR20230024864A (en) | Recovery method for cobalt and nickel | |
| CN118598097A (en) | A method for recycling waste lithium iron phosphate battery powder |