CN1069110C - Technology for comprehensive utilization of V-Ti magnetite - Google Patents
Technology for comprehensive utilization of V-Ti magnetite Download PDFInfo
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- CN1069110C CN1069110C CN99115348A CN99115348A CN1069110C CN 1069110 C CN1069110 C CN 1069110C CN 99115348 A CN99115348 A CN 99115348A CN 99115348 A CN99115348 A CN 99115348A CN 1069110 C CN1069110 C CN 1069110C
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- vanadium
- magnetic separation
- nonmagnetics
- magnetite
- titanium
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- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 238000005516 engineering process Methods 0.000 title abstract 3
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 26
- 239000011734 sodium Substances 0.000 claims abstract description 23
- 239000008188 pellet Substances 0.000 claims abstract description 18
- 238000011084 recovery Methods 0.000 claims abstract description 17
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 17
- 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 claims abstract description 14
- 238000000227 grinding Methods 0.000 claims abstract description 12
- 238000000605 extraction Methods 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- 230000002829 reductive effect Effects 0.000 claims abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 37
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 25
- GFNGCDBZVSLSFT-UHFFFAOYSA-N titanium vanadium Chemical compound [Ti].[V] GFNGCDBZVSLSFT-UHFFFAOYSA-N 0.000 claims description 20
- 238000007885 magnetic separation Methods 0.000 claims description 16
- 238000002386 leaching Methods 0.000 claims description 10
- 239000011230 binding agent Substances 0.000 claims description 8
- 239000012141 concentrate Substances 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 229920001353 Dextrin Polymers 0.000 claims description 3
- 239000004375 Dextrin Substances 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 3
- 238000002425 crystallisation Methods 0.000 claims description 3
- 230000008025 crystallization Effects 0.000 claims description 3
- 235000019425 dextrin Nutrition 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000004021 humic acid Substances 0.000 claims description 3
- 239000003077 lignite Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 159000000000 sodium salts Chemical class 0.000 claims description 3
- 239000003476 subbituminous coal Substances 0.000 claims description 3
- 239000001117 sulphuric acid Substances 0.000 claims description 3
- 235000011149 sulphuric acid Nutrition 0.000 claims description 3
- 238000006555 catalytic reaction Methods 0.000 claims description 2
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 2
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 claims 2
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical compound O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 claims 1
- 229910052742 iron Inorganic materials 0.000 abstract description 16
- 238000000034 method Methods 0.000 abstract description 16
- 229910052719 titanium Inorganic materials 0.000 abstract description 16
- 239000002253 acid Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000004048 modification Effects 0.000 abstract 2
- 238000012986 modification Methods 0.000 abstract 2
- 239000000126 substance Substances 0.000 abstract 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 15
- 239000010936 titanium Substances 0.000 description 15
- 239000002893 slag Substances 0.000 description 8
- 229910000628 Ferrovanadium Inorganic materials 0.000 description 5
- PNXOJQQRXBVKEX-UHFFFAOYSA-N iron vanadium Chemical compound [V].[Fe] PNXOJQQRXBVKEX-UHFFFAOYSA-N 0.000 description 5
- 239000006247 magnetic powder Substances 0.000 description 5
- 229910010413 TiO 2 Inorganic materials 0.000 description 4
- 238000005453 pelletization Methods 0.000 description 3
- CFVBFMMHFBHNPZ-UHFFFAOYSA-N [Na].[V] Chemical compound [Na].[V] CFVBFMMHFBHNPZ-UHFFFAOYSA-N 0.000 description 2
- BYFGZMCJNACEKR-UHFFFAOYSA-N aluminium(i) oxide Chemical compound [Al]O[Al] BYFGZMCJNACEKR-UHFFFAOYSA-N 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000011946 reduction process Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000006253 efflorescence Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 230000001698 pyrogenic effect Effects 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000010148 water-pollination Effects 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The present invention relates to a new technology for the comprehensive utilization of a V-Ti magnetite, which comprises the direct reduction of cold-bonded pellets, the grinding and magnetic separating of the reduced products, the acid leach of non-magnetic substances, and the sodium modification, roasting, leach and extraction of V. Compared with traditional methods, the technology has the advantages of short process, investment saving, reduced consumption of agents for sodium modification, and increased recovery rate of three elements; compared with the existing production process, the whole process increases the comprehensive recovery rates of Fe, V and Ti respectively by 5 to 6%, 4 to 21% and 3 to 83%, and saves energy by 30 to 40% and investment by 20 to 30%.
Description
The present invention relates to a kind of comprehensive utilization vanadium titano-magnetite, separate, reclaim the method for iron, vanadium, titanium.
Panxi Diqu is being contained very abundant vanadium titano-magnetite, wherein the vanadium metal reserves account for China's vanadium resource 60.4%, world resource 12.2%, the titanium metal reserves account for 97% of China's titanium reserves, account for 39.1% of world saving, also are one of large-scale iron ore bases simultaneously.Comprehensive utilization for vanadium titano-magnetite, traditional method mainly is high temperature oxidation sodium roasting and two kinds of methods of high temperature reduction (Wang Wenzhong chief editor, " complex ore comprehensive utilization ", P107～109, press of Northeastern University, 1994), oxidation sodium vanadium extraction process is earlier with pelletizing sodiumizing-oxidizing roasting water logging vanadium extraction, soak that applied to pelletizing rotary kiln directly reduces behind the vanadium-and electric furnace is molten to be divided, and can realize iron, vanadium, the comprehensive recovery of titanium, iron, vanadium, titanium recovery rate is respectively 85～89%, 58% and 74%, but Production Flow Chart is long, and the sodium agent consumes high, and pellet strength is poor after the vanadium extraction, easy efflorescence and ring formation when reducing in the rotary kiln, the vanadium titanium recovery rate is low; It is fixed that the high temperature reduction method is that iron ore pellets earlier gives heat (900～1000 ℃) through high temperature, reclaim the vanadium titanium molten the branch in separation of iron and vanadium titanium, molten iron blowing vanadium extraction or the slag through rotary kiln reduction-electric furnace again, the rate of recovery of iron, vanadium, titanium is respectively 89%, 55% and 80%, realized that the ferrovanadium titanium comprehensively reclaims, reduce the sodium agent and consume, be difficult to control, the low low (TiO of titanium-contained slag grade of reaching of vanadium titanium recovery rate but still exist Production Flow Chart long (two step pyrogenic processes are processed), energy consumption height, the molten timesharing iron of electric furnace and vanadium titanium separating effect instability, vanadium titanium to flow to
245～50%) shortcoming.
In order to solve a ferrovanadium titanium comprehensive reutilization difficult problem in the vanadium titano-magnetite, shortened process is reduced investment outlay, and reduces the vanadium extraction reagent consumption, stablizes vanadium titanium trend on stream, improves the ferrovanadium titanium recovery rate, produces the direct-reduced iron powder and is Electric furnace steel making raw material, high-purity V
2O
5And rich titanium slag, special proposition the present invention.
The present invention includes acidity leaching that grinds magnetic separation separation, nonmagnetics and sodium roasting leaching vanadium extraction that cooled agglomerated pellet directly reduced, went back original product.Specific embodiment and technical parameter are as follows:
1〉cooled agglomerated pellet directly reduces: add compound binding agent behind the fine grinding v-ti magnetite concentrate and make ball, the concentrate fineness is less than 0.074 millimeter 80～85%, (3～9: the compound binding agent addition (weight) 1.0～1.7% that 1) is made into, additive are 1% (weight) Na by Sodium salts humic acids+dextrin
2SO
4(solid)+1%Na
2CO
3(solid) makes ball moisture 8.5～10%, 150～250 ℃ of green-ball drying and consolidating temperature, dry wind speed 0.6～0.9m/s; Cooled agglomerated pellet directly reduces with brown coal, sub-bituminous coal, 1100～1150 ℃ of reduction temperatures, recovery time 180～240min, and the C/Fe ratio is 0.5～0.6, gets reducting pellet, reducting pellet degree of metalization 93～95%.
2〉reducting pellet magnetic separation: pelletizing after reducing is carried out two stage grinding, two stages of magnetic separation.The primary grinding fineness is less than 0.074 millimeter 90～99%, magnetic separation field intensity 500 Os, the secondary grinding fineness is less than 0.044 millimeter 80～95%, magnetic separation field intensity 500～750 Os, iron recovery 94～96% in the magnetic powder, and iron level TFe is 90～93% in the magnetic powder, gained magnetic powder after the magnetic separation, can produce the direct-reduced iron powder by the group of pressure as required, also can produce the powder metallurgy iron powder by hydrogen reduction.V in the nonmagnetics
2O
5, TiO
2Grade is respectively 2～3% and 44～46%, and the rate of recovery of vanadium titanium is respectively 84% and 85%.
3〉acidity of nonmagnetics leaches: magnetic separation gained nonmagnetics removes FeO, CaO, MgO, SiO through dilute hydrochloric acid or two sections leachings of dilute sulphuric acid
2Deng impurity, HCl (H
2SO
4) weight percent concentration is 1～3%, acidleach liquid-solid ratio (weight) is 3: 1～4: 1, leaches 1～3h at every turn.Soak slag vanadium titanium grade and reach V respectively
2O
53～4% and TiO
270～72%, the slag that soaks after diluted acid is handled is a high-quality vanadium extraction titanium material.
4〉the catalysis sodium roasting after the acidleach: the sodium agent is crystallization Na
2SO
4, addition 5～10%, catalyzer KMnO
4, NaClO, MnO
2, KNO
3, NaNO
3Independent or arbitrary proportion mixes use, and addition is 1～5%, 800～950 ℃ of maturing temperatures, roasting time 1～2h, vanadium recovery 92～95%.
Description of drawings:
Fig. 1: process flow sheet of the present invention.
The present invention adopts cooled agglomerated pellet coal-based direct reduction-mill ore magnetic selection to v-ti magnetite concentrate Isolation technics realization iron separates with the vanadium titanium, reaches with vanadium titano-magnetite preheated pellets direct-reduction process The acid pellet direct-reduction process is compared, and technological process is short, saves a step high-temperature concretion, saves and throws Money; The used binding agent of the present invention is applicable to the vanadium titano-magnetite of hydrophily difference, and coal-based directly also Former temperature reduces by 100～130 ℃; Contain vanadium titanium material (nonmagnetics) and adopt in advance the diluted acid leaching place Reason removes residual Fe O, CaO, MgO, a small amount of Al2O
3、SiO
2Deng impurity, make the vanadium titanium advance one The step enrichment reduces treating capacity, reduces the sodium agent and consumes; Sodium roasting vanadium-extracting, realization vanadium titanium Effective separation has improved three kinds of element recovery rates simultaneously. The present invention compares with electric furnace molten the branch, and is front The person belongs to the normal temperature operation, and the latter belongs to pyroprocess, and therefore, the former energy consumption greatly reduces, invests big Amount is saved, environment is good, and the vanadium titanium flows to easily control, and the wayward vanadium titanium of electric furnace process flows to. The rich titanium slag grade of gained of the present invention is 70～72%, than the molten point-score (TiO of electric furnace245～55%) high by 15% About, V leaching rate improves 5%, reduces by 50～100 ℃ of sodium roasting temperature, the roasting time contracting Short 20%. Whole process ferrovanadium titanium comprehensive recovery respectively than existing production procedure improve 5～6%, 4～21% and 3～83%, energy-conservation 30～40%, reduce investment outlay 20～30%.
Embodiment:
Implement this scheme in 1 Panxi Diqu " exploitation of Taihe county iron ore vanadium titano-magnetite ferrovanadium titanium comprehensive utilization new technological process " project.Add compound binding agent behind the fine grinding v-ti magnetite concentrate and make ball, the concentrate fineness is less than 0.074 millimeter 85%, and by the compound binding agent addition (weight) 1.7% that Sodium salts humic acids+dextrin (9: 1) is made into, additive is 1% (weight) Na
2SO
4(solid)+1%Na
2CO
3(solid) makes ball moisture 10%, 200 ℃ of green-ball drying and consolidating temperature, dry wind speed 0.9m/s; Cooled agglomerated pellet directly reduces with brown coal, sub-bituminous coal, 1150 ℃ of reduction temperatures, recovery time 240min, and the C/Fe ratio is 0.6, reducting pellet degree of metalization 95%; The primary grinding fineness is less than 0.074 millimeter 90%, magnetic separation field intensity 500 Os, and the secondary grinding fineness is less than 0.044 millimeter 95%, magnetic separation field intensity 750 Os, iron recovery 96% in the magnetic powder, iron level TFe93% in the magnetic powder, V in the nonmagnetics
2O
5, TiO
2Grade is respectively 3% and 46%, and the yield of vanadium titanium is respectively 84% and 85%; Magnetic separation gained nonmagnetics is through dilute hydrochloric acid or two sections leachings of dilute sulphuric acid, HCl (H
2SO
4) weight percent concentration is 3%, liquid-solid ratio (weight) is 4: 1, leaches 3h at every turn.Soak slag vanadium titanium grade and reach V respectively
2O
54% and TiO
272%, the slag that soaks that diluted acid is handled is a high-quality vanadium extraction titanium material; Crystallization Na during the sodium vanadium extraction
2SO
4Addition 5～10%, catalyst n aNO
3Addition is 5%, 950 ℃ of maturing temperatures, roasting time 2h, vanadium leaching yield 95%.
Claims (1)
1 one kinds of comprehensive utilization vanadium titano-magnetite novel procesies is characterized in that: the present invention includes acidity leaching that grinds magnetic separation separation, nonmagnetics and sodium roasting leaching vanadium extraction that cooled agglomerated pellet directly reduced, went back original product, specific embodiment and technical parameter are as follows:
1〉cooled agglomerated pellet directly reduces: add compound binding agent behind the fine grinding v-ti magnetite concentrate and make ball, the concentrate fineness is less than 0.074 millimeter 80～85%, add the compound binding agent of gross weight 1.0～1.7%, compound binding agent by Sodium salts humic acids+dextrin by 3～9: 1 is made into, interpolation 1% (weight) Na
2SO
4+ 1%Na
2CO
3As additive, make ball moisture 8.5～10%, 150～250 ℃ of green-ball drying and consolidating temperature, dry wind speed 0.6～0.9m/s, reductive agent brown coal, sub-bituminous coal, 1100～1150 ℃ of reduction temperatures, recovery time 180～240min, the C/Fe ratio is 0.5～0.6, gets reducting pellet;
2〉reducting pellet magnetic separation: comprise two stage grinding, two stages of magnetic separation, the primary grinding fineness is less than 0.074 millimeter 90～99%, magnetic separation field intensity 500 Os, and the secondary grinding fineness is less than 0.044 millimeter 80～95%, magnetic separation field intensity 500～750 Os obtain reduced iron powder thus and contain the nonmagnetics of vanadium titanium;
3〉acidity that contains vanadium titanium nonmagnetics leaches: magnetic separation gained nonmagnetics is through dilute hydrochloric acid or two sections leachings of dilute sulphuric acid, HCl or H
2SO
4Weight percent concentration be 1～3%, liquid-solid ratio (weight) is 3: 1～4: 1, leaches 1～3h at every turn, products obtained therefrom is rich vanadium titanium material;
4〉the catalysis sodium roasting after the acidleach: the sodium agent is crystallization Na
2SO
4, addition 5～10%, catalyzer KMnO
4, NaClO, MnO
2, KNO
3, NaNO
3Independent or arbitrary proportion mixes use, and addition is 1～5% (weight), 800～950 ℃ of maturing temperatures, and roasting time 1～2h gets Vanadium Pentoxide in FLAKES and ilmenite concentrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99115348A CN1069110C (en) | 1999-04-30 | 1999-04-30 | Technology for comprehensive utilization of V-Ti magnetite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99115348A CN1069110C (en) | 1999-04-30 | 1999-04-30 | Technology for comprehensive utilization of V-Ti magnetite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1236816A CN1236816A (en) | 1999-12-01 |
| CN1069110C true CN1069110C (en) | 2001-08-01 |
Family
ID=5278325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99115348A Expired - Fee Related CN1069110C (en) | 1999-04-30 | 1999-04-30 | Technology for comprehensive utilization of V-Ti magnetite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1069110C (en) |
Cited By (1)
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Also Published As
| Publication number | Publication date |
|---|---|
| CN1236816A (en) | 1999-12-01 |
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