CN1429919A - Method of producing titanium enriched material using titanium mineral - Google Patents
Method of producing titanium enriched material using titanium mineral Download PDFInfo
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- CN1429919A CN1429919A CN 02133923 CN02133923A CN1429919A CN 1429919 A CN1429919 A CN 1429919A CN 02133923 CN02133923 CN 02133923 CN 02133923 A CN02133923 A CN 02133923A CN 1429919 A CN1429919 A CN 1429919A
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Abstract
A process for preparing Ti-enriched material from V-Ti magnetite through preseparating to obtain Ti-Fe ore concentrate, proportionally mixing it with V-Ti-Fe core concentrate, adhesive and carbon reducer, smelting to obtain high-Ti slag and semi-steel, blowing V-Cr to melten alloy iron to obtain V-Cr contained steel slag, separating V and Cr, fire metallurge of high-Ti slag to obtain artificial rutile and microcrystal glass, ball grinding of artificial rutile and coal while adding adhesive to obtain C-contained Ti particles, calcining, cooling and classifying.
Description
Technical field
The invention belongs to titanium ore (vanadium titano-magnetite, titanium placer) metalliferous mineral flotation and metallurgy method, particularly ore deposit, unbalanced-ore and weathered ore are made steel products, are extracted carbon containing rutile rich titanium material and vanadium chromium product that the rich titanium material of higher-grade solubility in acid that sulfuric acid method titanium pigment factory uses and chloride process titanium dioxide powder factory use and the flotation and metallurgy method that fully utilizes other valuable element in the ore type vanadium titano-magnetite table.
Background technology
Usually with oxide compound state and other metal oxides, particularly form sosoloid (rutile), perhaps independent mineral (vanadium titano-magnetite, titanium placer etc.) at the nature titanium resource with ferric oxide.The alleged titanium ore of the present invention is meant the titanium deposit (primary vanadium titano-magnetite and titanium placer) with industrial value, i.e. cut-off grade primary ore (vanadium titano-magnetite) TiO
2〉=5%～6%, titanium placer (ilmenite) mineral 〉=10kg/m
3Titanium deposit.Titanium in the primary vanadium titano-magnetite is composed and is had in titanomagnetite and two kinds of purpose mineral of ilmenite the TiO of vanadium titano-magnetite
2With ilmenite (FeOTiO
2) and ulvite (2FeOTiO
2) be chadacryst mineral and oikocryst mineral magnetite (FeOFe
2O
3) being the isomorph existence, iron, titanium can not be separated with the beneficiation method of mechanical-physical.This v-ti magnetite ore reserves is huge, and TFe＜23% low grade ore, unbalanced-ore and the weathered ore that will take up an area of matter reserves 70% when exploitation utilizes ought dump by the mining barren rock.Actual these mining barren rocks are together with showing rich ore in the interior ore deposit, confirming mainly when chats is equally regarded as iron and vanadium resource that it is a titanium resource.Vanadium titano-magnetite is used to produce titanium white, metal titanium and other titanium series product as the titanium ore resource.Common primary vanadium titano-magnetite at first enters and selects the ironworks, through magnetic separation ilmenite, sulfide and the silicate minerals of ferromagnetic titanomagnetite and weak magnetic is separated into and contains sefstromite concentrate.This iron ore concentrate enters blast furnace-oxygen coverter smelting iron and steel flow process (as Panzhihua Inon ﹠ Steel (Group) Co. of China, Muscovite Qiu Suofu metallurgical works etc.) as iron-smelting raw material, or the direct reduction flow process of iron is produced steel products.Owing to contain～0.3% V
2O
5And have higher economic worth, but in steelmaking process the output vanadium slag, be the important source material of vanadium product.But still also have 2%～6% granular ilmenite in the sefstromite concentrate that Iron Works Plant sub-elects, titanium, iron isomorph exist in the titanomagnetite in addition, and beneficiation method can't be separated, and this is the low high TiO of titanium of some sefstromite concentrate iron
2＞12% one of the main reasons causes the great difficulty of follow-up steel smelting procedure.The proportion that accounts for raw ore titaniferous total amount in view of vanadium titano-magnetite concentrate titaniferous amount is very big, with the blue sharp mining area of Flos Bombacis Malabarici is example, its occupation rate surpasses 50%～60%, is the Panzhihua Iron of main iron-smelting raw material for one with vanadium titano-magnetite, this part follows iron mineral exploitation to go down the hill to enter the titanium dioxide of blast-furnace smelting, and its absolute quantity every year can be up to 600,000 tons～700,000 tons of TiO
2But this sefstromite concentrate titaniferous grade is low, add the requirement of smelting iron and steel technology, particularly blast furnace-bof process needs to add acid solvent and basic solvent in blast-furnace burden, makes the titanium slag content of titanium dioxide of output be no more than 25%, the direct motion of blast-furnace smelting ability, so that still do not have industrialized method is extracted titanium products and utilized this titanium slag in a large number from titanium slag method so far, cause the heap of annual about 3,500,000 tons of this titanium slags, form huge environmental stress.
Owing to enter the sefstromite concentrate that contains of direct reduction flow process, the titanium slag that produces contains TiO
2Usually＜60%, be difficult to enter the existing process of making artificial rutile, so the method for the rich titanium material of the extraction carbon containing artificial rutile that the low-grade like this titanium resource of similar sefstromite concentrate of no use so far is the raw material success is used for chloride process titanium dioxide powder factory production chlorination process rutile titanium white, titanium sponge, titanium material etc.
Select the ironworks to adopt a magnetic separation of primary grinding to reclaim titanomagnetite in the titanium ore, select the ironworks mine tailing as selecting titanium factory raw ore, adopt gravity treatment---the granular ilmenite of electric separation flow process recovery+0.074mm, adopt strong magnetic---the granular ilmenite of flotation flowsheet recovery-0.075mm, produce TiO
247% ilmenite concentrate selects the titanium (TiO of titanium factory
2) rate of recovery 20%, calculate ilmenite concentrate from mining, now titanium recovery rate 3.95%.Low-grade ilmenite concentrate (TiO
243%～53%) be used for sulfuric acid method titanium pigment factory and produce sulfate process titanium dioxide, " three wastes " quantity discharged is especially big, and environmental pollution is very serious.Produce one ton of titanium dioxide, by-product green vitriol (7 water titanous sulfate) 2.5～4t, 20% sulfur waste acid, 7～11t, acid waste water 100～250t, acid dust-laden exhaust gas 15000～20000m
3, waste residue 0.2～0.3t (butt meter).Produce one ton of titanium dioxide, need 4t left and right sides sulfuric acid, consume part of sulfuric acid except generating ferrous sulfate, all the other sulfuric acid all become waste water,waste gas and industrial residue, the quantity discharged of so a large amount of refuses, and other Chemicals almost do not have.Sulfuric acid method titanium pigment factory need be a raw material with the rich titanium material of higher-grade solubility in acid under the pressure of disposal of waste gas, water and industrial residue in a hurry.Produce the rich titanium material of solubility in acid with rock ore deposit (primary ore) or the electric smelting of titanium placer both at home and abroad, grade of titanium dioxide has only TiO
241%～72%, not production higher-grade TiO so far
2The rich titanium material of 75%～92% solubility in acid.
The mining vanadium titano-magnetite dumps the low grade ore, unbalanced-ore and the weathered ore that take up an area of matter reserves about 70% when the mining barren rock, and Panxi Diqu has more than 1,000 ten thousand tons of titanium ore resources dump when the mining barren rock every year approximately.
Summary of the invention
Purpose of the present invention: the one, the selected iron grade of present schreyerite by TFe34%～40%, is reduced to TFe22%～30%, reduce the selected iron grade TFe10% of raw ore, smelting is selected in three kinds of purpose mineral (titanomagnetite, granular ilmenite and sulfide) mixing; The 2nd, titanium recovery rate is brought up to 70% (calculating concentrated ilmenite from mining), iron recovery by present 3.95% and is brought up to 70% (calculating molten iron from mining), vanadium recovery by present 56.99% and bring up to 70% (calculating vanadium slag from mining) by present 26.83%; The 3rd, economize on resources, resources conseravtion, reasonable development comprehensive utilization vanadium and titanium resources is all recycled being used as the low grade ore that accounts for schreyerite geologic reserve 70%, unbalanced-ore, the weathered ore that the mining barren rock dumps at present; The 4th, produce TiO
275%～92% is suitable for the sour molten rich titanium material that sulfuric acid method titanium pigment factory uses; The 5th, produce TiO
2＞92%～96% is suitable for the rich titanium material of low calcium and magnesium carbon containing rutile that chloride process titanium dioxide powder factory uses; The 6th, present Panzhihua Iron development and use are climbed western vanadium titano-magnetite based on iron, produce just one ton of titanium dioxide of by-product of 50 tons of iron, and ferrotianium is than 1/50.Panzhihua Jintai Hi-Tech. Co., Ltd. implements this Patent exploitation utilization and climbs western vanadium titano-magnetite based on titanium, and other valuable elements such as iron, vanadium, chromium are reclaimed in overall equilbrium, and ferrotianium is produced one ton of titanium dioxide than 1/3,3 tons of iron of by-product.Climbing western vanadium titano-magnetite (schreyerite) essence is titanium ore.
The present invention is achieved by following technical proposals: vanadium titano-magnetite (or titanium placer) after tailings discarding by preconcentration or weathered ore washup again through the magnetizing roasting stage grinding and stage separation, make gangue mineral separate concentrated ilmenite (or titanium sand concentrate), perhaps this concentrated ilmenite (or titanium sand concentrate) and sefstromite concentrate (or ilmenite concentrate) mix by a certain percentage that the back makes that pelletizing carries out prereduction behind binding agent (wilkinite etc.) and the carbonaceous reducing agent mixing or directly into stove, at electric blast furnace or mine heat furnace smelting production TiO
2＞68% titanium slag (the molten titanium slag that divides) and half steel (alloy hot metal), alloy hot metal blows vanadium chromium through duplex practice, gained contains the slag wet method extraction separation vanadium chromium of vanadium chromium, and titanium slag (molten minute titanium slag) secluding air cools off after broken ore grinding gravity concentration, and grade of titanium dioxide is brought up to TiO
275%～92%, be broken to the rich titanium material of solubility in acid of fineness 0.045mm～0.075mm with raymond grinding powder, titanium slag (the molten titanium slag that divides) enters the pyrometallurgy ore dressing process of titanium slag, produces the rich titanium material of artificial rutile (TiO
2＞92%～96%) and devitrified glass.For improving the rich titanium material of rutile in the utilization ratio of the chlorination rate of chlorination fluidizing furnace (fluidized bed), titanium with prevent that the chlorination fused salt from stopping up chlorination fluidizing furnace hole pattern, coal is penetrated in the rich titanium material of rutile, with addition of the granulation of binding agent (wood pulp etc.) mixing, after air-isolation or the cooling of feeding inert gas, sieve+0.3mm～the rich titanium material of 1.4mm grade carbon containing rutile after the roasting.
Method of the present invention comprises following processing step:
(A) ,+70mm titanium ore (vanadium titano-magnetite, titanium placer) in three kinds of purpose mineral (titanomagnetite, granular ilmenite and sulfide) mix and to select smelting, it is characterized in that: through prescreening machine (1), electromagnetism roller (2) is roughly selected, and electromagnetism roller (3) is scanned and dumped mine tailing
1The preliminary election ore reaches test sieve extension set (4) through in advance, + 10mm ore advances fine crusher (5),-10～0mm ore enters primary grinding machine (6) ore grinding after taking off magnetic, the grinding machine ore discharge is through spiral grading sieve (7) classification, + 3mm ore returns grinding machine and regrinds, and-3～0mm ore enters gravity treatment for the first time or the low intensity magnetic separation technical process of taking the lead.
(B) ,+70mm weathered ore (vanadium titano-magnetite, titanium placer) in three kinds of purpose mineral (titanomagnetite, granular ilmenite and sulfide) mix and to select smelting, it is characterized in that: warp is every sieve (8), + 70mm nugget is crushed to-70～0mm through stoning machine (9), through log washer (10) washup, + 10mm ore enters fine crusher (5),-10mm ore enters first section ore mill (6), the grinding machine ore discharge is through spiral grading sieve (7) classification, + 3mm ore returns grinding machine (6) and regrinds, and-3～0mm ore enters gravity treatment for the first time or the low intensity magnetic separation technical process of taking the lead.
(C), produce concentrated ilmenite (or titanium sand concentrate) by magnetizing roasting stage grinding and stage separation " ore grinding-gravity treatment-low intensity magnetic separation-magnetizing roasting-ore grinding-gravity treatment-high intensity magnetic separation " technical process, it is characterized in that :-70mm titanium ore (vanadium titano-magnetite, titanium placer) after tailings discarding by preconcentration or weathered ore washup-ore of 10mm is through primary grinding (6), the grinding machine ore discharge is through spiral grading sieve (7) classification, returning grinding machine (6) greater than the ore of 3mm regrinds, enter gravity concentrator (11) less than the ore of 3mm and roughly select, dump mine tailing
2Get rough concentrate
1, chats through low intensity magnetic separation machine (12) roughly select rough concentrate
2, the low intensity magnetic separation mine tailing enters fluidizing furnace (or rotary kiln or ramp type stoving oven) magnetizing roasting (14), magnetizing roasting rough concentrate and rough concentrate after taking off magnetic, filtration drying (13)
1, rough concentrate
2Enter two sections grinding machines (15) fine grinding, two sections grinding machine ore discharges are through taking off magnetic spiral grading sieve (or hydrocyclone) (16) classification, + 0.15mm ore returns grinding machine (15) and regrinds,-0.15mm the mineral of monomer dissociation (purpose mineral and gangue mineral) carries out the gravity treatment second time through gravity concentrator (17) and roughly selects, concentrate
3And mine tailing
3, the gravity treatment chats through a midfield intensity magnetic separator (18) roughly select concentrate
1, midfield high intensity magnetic separation mine tailing takes off magnetic compass secondary midfield intensity magnetic separator (19) and scans and dump mine tailing
1Get concentrate
5, concentrate
3, concentrate
1And concentrate
5Mix concentrated ilmenite (or titanium sand concentrate).
(D), produce concentrated ilmenite (or titanium sand concentrate) by magnetizing roasting stage grinding and stage separation " ore grinding-low intensity magnetic separation-high intensity magnetic separation-magnetizing roasting-ore grinding-low intensity magnetic separation-high intensity magnetic separation " technical process, it is characterized in that :-70mm titanium ore (vanadium titano-magnetite or titanium placer) after tailings discarding by preconcentration or weathered ore washup-ore of 10mm is through primary grinding (6), the grinding machine ore discharge is through spiral grading sieve (7) classification, + 3mm ore returns ore mill (6) and regrinds ,-3～0mm ore enter low intensity magnetic separation machine (12) roughly select rough concentrate
1And rough concentrate
2, rough concentrate
2Take off magnetic and enter for the first time that midfield intensity magnetic separator (18) dumps mine tailing
2Get rough concentrate
3, rough concentrate
3Filtration drying (13) enters fluidizing furnace (or rotary kiln or ramp type stoving oven) magnetizing roasting (14), magnetizing roasting rough concentrate and rough concentrate
1Enter second section grinding machine (15) fine grinding, second section grinding machine ore discharge is through spiral grading sieve (or hydrocyclone) (16) classification, and+0.15mm returns in the ore deposit secondary grinding machine (15) and regrinds, and-0.15mm ore gets concentrate through low intensity magnetic separation machine (12)
4, the low intensity magnetic separation mine tailing through take off magnetic enter for the second time midfield intensity magnetic separator (19) concentrate
5, secondary midfield intensity magnetic separator (19) mine tailing enters for the third time through taking off magnetic that midfield intensity magnetic separator (20) dumps mine tailing
3Get concentrate
6, concentrate
4, concentrate
5And concentrate
6Mix concentrated ilmenite (or titanium sand concentrate).
(E), concentrated ilmenite (or the titanium placer) electrosmelting of magnetizing roasting stage grinding and stage separation production is produced titanium slag (the molten titanium slag that divides), it is characterized in that: concentrated ilmenite (or titanium placer), perhaps this concentrated ilmenite (or titanium placer) and sefstromite concentrate (or ilmenite concentrate) mix back (22) behind binding agent (wilkinite etc.) and the carbonaceous reducing agent mixing by a certain percentage, make pelletizing (23), advance rotary kiln (24) prereduction or, smelt production half steel (alloy hot metal) and titanium slag (the molten titanium slag that divides) (TiO at the hot stove of electric blast furnace or ore deposit (25) directly into stove
2＞68%), alloy hot metal blows vanadium chromium through duplex practice, the slag that gained contains vanadium chromium separates vanadium chromium with hydrometallurgical extraction, and enter the rich titanium material of gravity concentration process production higher-grade solubility in acid after titanium slag (molten branch titanium slag) the secluding air cooling, or titanium slag (the molten titanium slag that divides) enters the rich titanium material of pyrometallurgy ore dressing process production rutile.
(F), titanium slag (the molten titanium slag that divides) the rich titanium material of gravity concentration production higher-grade solubility in acid, it is characterized in that: titanium slag (molten divide titanium slag) send into vacuum pump (27) take out cool off in the cool furnace (26) of air or input inert gas after, carry out fragmentation (28), ore grinding (29), gravity concentration (30), mine tailing is processed into devitrified glass, and chats returns electrosmelting (25), TiO
2The rich titanium material of 75%～92% solubility in acid is worn into the rich titanium material of solubility in acid that fineness is 0.045mm～0.075mm through Raymond mill (31).
(G), the rich titanium material of rutile is produced in titanium slag (the molten titanium slag that divides) or the rich titanium material of solubility in acid pyrometallurgy ore dressing, it is characterized in that: titanium slag (molten divide a titanium slag) or enter insulation crystallization oxidized still (32) without the rich titanium material of the solubility in acid of Raymond mill (31) fine grinding, heat oxygen blast with the electric-arc heating oxygen blast or with oxygen-Fuel lance or oxygen (air) direct current plasma producer to insulation oxidized still (32), add silica, fluoride additive simultaneously, titanium slag or the rich titanium material of solubility in acid are carried out deep oxidation, make the main titaniferous ore anosovite (Ti in titanium slag or the rich titanium material
3O
5Solid solution for base) titanium suboxide in is oxidized to the rutile (TiO of octahedral structure
2), impurity such as calcium magnesium are left out, and enter in the silicate glass body, form the rich titanium material of rutilization, the rich titanium material of this rutilization makes the cooling of rutile grain growth in annealer (33) after broken (34), and ore grinding (35) and gravity treatment (36) dump mine tailing, must TiO
2The rich titanium material of＞92%～96% low calcium and magnesium artificial rutile, chats returns the melting oxidation once more of insulation oxidized still (32), and to improve the rate of recovery of titanium, mine tailing is processed into devitrified glass.
(H), the rich titanium material of the low calcium and magnesium artificial rutile (TiO of pyrometallurgy ore dressing production
2＞92%～96%) produces the rich titanium material of carbon containing rutile, it is characterized in that: the rich titanium material of rutile (TiO
2＞92%～98%) and coal (fixed carbon C＞60%) through grinding machine (37), (38) fine grinding to-0.045mm (325 order) and binding agent (wood pulp etc.) (39) mixing (C/TiO for preparing burden
2＞20%～30%, binding agent 0.3%～0.6%), granulation (40), the roasting 20 minutes (41) in 900 ℃～950 ℃ stoving ovens of carbon containing titanium grain, then carbon containing titanium grain is sent into vacuum pump (42) take out air or have prevent carbon containing titanium grain oxidation cooling in the water cooler (43) of inert gas after, through double-layer spiral sizing screen or two individual layer screw classifiers (44) classification,-0.3mm grade and+1.4mm grade carbon containing titanium grain returns grinding machine (37) recycle of regrinding ,+0.3mm～-the rich titanium material of carbon containing rutile of 1.4mm grade.
The present invention has produced following beneficial effect: the one, and level of resources utilization height by TFe34%～40%, is reduced to TFe22%～30% with the selected iron grade of present schreyerite, reduces the selected iron grade TFe10% of raw ore; The 2nd, titanium recovery rate is brought up to 70% (calculating concentrated ilmenite from mining), iron recovery by present 3.95% and is brought up to 70% (calculating molten iron from mining), vanadium recovery by 56.99% of order glue and bring up to 70% (calculating vanadium slag from mining) by present 26.83%; The 3rd, economize on resources, resources conseravtion, the reasonable development utilize resources synthetically, can effective recycling vanadium titano-magnetite table in various valuable elements in ore deposit, unbalanced-ore and the weathered ore (or titanium placer), titanium ore resource exploitation utilization ratio brings up to 100% by present 30%; The 4th, produce TiO
275%～92% is suitable for the sour molten rich titanium material that sulfuric acid method titanium pigment factory uses; The 5th, produce TiO
2＞92%～96% is suitable for the rich titanium material of low calcium and magnesium carbon containing rutile that chloride process titanium dioxide powder factory uses; The 6th, present Panzhihua Iron development and use are climbed western vanadium titano-magnetite based on iron, produce just one ton of titanium dioxide of by-product of 50 tons of iron, and ferrotianium is than 1/50.Panzhihua Jintai Hi-Tech. Co., Ltd. implements this Patent exploitation utilization and climbs western vanadium titano-magnetite based on titanium, and other valuable elements such as iron, vanadium, chromium are reclaimed in overall equilbrium, and ferrotianium is produced one ton of titanium dioxide than 1/3,3 tons of iron of by-product.Climbing western vanadium titano-magnetite (schreyerite) essence is titanium ore.
Description of drawings
Fig. 1 is a process flow sheet of the present invention;
Fig. 2 is a tailings discarding by preconcentration process flow sheet of the present invention;
Fig. 3 is a weathered ore washup process flow sheet of the present invention;
Fig. 4 is another process flow sheet of the present invention.
Embodiment
The invention will be further described below with reference to the drawings and specific embodiments.
Shown in Fig. 1,4,-70mm titanium ore (vanadium titano-magnetite, titanium placer) after tailings discarding by preconcentration or weathered ore washup-the 10mm ore, again through magnetizing roasting stage grinding and stage separation ore deposit, make gangue mineral separate concentrated ilmenite (or titanium sand concentrate), perhaps this concentrated ilmenite (or titanium sand concentrate) and sefstromite concentrate (or ilmenite concentrate) mix by a certain percentage that the back makes that pelletizing carries out prereduction behind binding agent (wilkinite etc.) and the carbonaceous reducing agent mixing or directly into stove, at electric blast furnace or mine heat furnace smelting production TiO
2＞68% titanium slag (the molten titanium slag that divides) and half steel (alloy hot metal), alloy hot metal blows vanadium chromium through duplex practice, gained contains the slag wet method extraction separation vanadium chromium of vanadium chromium, and titanium slag (molten minute titanium slag) secluding air cools off after broken ore grinding gravity concentration, and grade of titanium dioxide is brought up to TiO
275%～92%, be broken to the rich titanium material of solubility in acid of fineness 0.045mm～0.075mm with raymond grinding powder, titanium slag (the molten titanium slag that divides) enters the pyrometallurgy ore dressing process of titanium slag, produces the rich titanium material of artificial rutile (TiO
2＞92%～96%) and devitrified glass.For improving the rich titanium material of rutile in the utilization ratio of the chlorination rate of chlorination fluidizing furnace (fluidized bed), titanium with prevent that the chlorination fused salt from stopping up chlorination fluidizing furnace hole pattern, coal is penetrated in the rich titanium material of rutile, with addition of the granulation of binding agent (wood pulp etc.) mixing, after air-isolation or feeding inert gas are cooled off after the roasting, sieve+0.3mm～-the rich titanium material of 1.4mm grade carbon containing rutile.
As shown in Figure 2, the ore tailings discarding by preconcentration technological process of production, its process is :-70mm titanium ore (vanadium titano-magnetite, titanium placer) is roughly selected through electromagnetism roller (2) through prescreening machine (1), and electromagnetism roller (3) is scanned and dumped mine tailing
1The preliminary election ore reaches test sieve extension set (4) through in advance, it is in small, broken bits that+10mm ore enters fine crusher (5),-10～0mm ore enters primary grinding machine (6) ore grinding after taking off magnetic, the grinding machine ore discharge is through spiral grading sieve (7) classification, + 3mm ore returns grinding machine and regrinds, and-3～0mm ore enters gravity treatment for the first time or the low intensity magnetic separation technical process of taking the lead.
As shown in Figure 3, the weathered ore washup technological process of production, its process is: the weathered ore warp is every sieve (8), + 70mm nugget is crushed to-70～0mm through stoning machine (9), and through log washer (10), it is in small, broken bits that+10mm ore enters fine crusher (5),-10～0mm ore enters first section ore mill (6) ore grinding, the grinding machine ore discharge is through spiral grading sieve (7) classification, and+3mm ore returns one section grinding machine (6) and regrinds, and-3～0mm ore enters gravity treatment for the first time or the low intensity magnetic separation technical process of taking the lead.
As shown in Figure 1, concentrated ilmenite (or titanium placer) is produced in magnetizing roasting stage grinding and stage separation " ore grinding-gravity treatment-low intensity magnetic separation-magnetizing roasting-ore grinding-gravity treatment-high intensity magnetic separation " technical process, its process is :-70mm titanium ore (vanadium titano-magnetite, titanium placer) after tailings discarding by preconcentration or weathered ore washup-ore of 10mm is through primary grinding (6), the grinding machine ore discharge is through spiral grading sieve (7) classification, returning grinding machine (6) greater than the ore of 3mm regrinds, enter gravity concentrator (11) less than the ore of 3mm and roughly select, dump mine tailing
2Get rough concentrate
1, chats through low intensity magnetic separation machine (12) roughly select rough concentrate
2, the low intensity magnetic separation mine tailing enters fluidizing furnace (or rotary kiln or ramp type stoving oven) magnetizing roasting (14), magnetizing roasting rough concentrate and rough concentrate after taking off magnetic, filtration drying (13)
1, rough concentrate
2Enter two sections grinding machines (15) fine grinding, two sections grinding machine ore discharges are through taking off (or hydrocyclone) (16) classification of magnetic spiral extension set sieve, + 0.15mm ore returns grinding machine (15) and regrinds,-0.15mm the mineral of monomer dissociation (purpose mineral and gangue mineral) carries out the gravity treatment second time through gravity concentrator (17) and roughly selects, concentrate
3And mine tailing
3, the gravity treatment chats through a midfield intensity magnetic separator (18) roughly select concentrate
4, midfield high intensity magnetic separation mine tailing takes off magnetic compass secondary midfield intensity magnetic separator (19) and scans and dump mine tailing
4Get concentrate
5, concentrate
3, concentrate
4And concentrate
5Mix concentrated ilmenite (or titanium sand concentrate).
As shown in Figure 4, concentrated ilmenite (or titanium placer) is produced in magnetizing roasting stage grinding and stage separation " ore grinding-low intensity magnetic separation-high intensity magnetic separation-magnetizing roasting-ore grinding-low intensity magnetic separation-high intensity magnetic separation " technical process, its process is :-70mm titanium ore (vanadium titano-magnetite, titanium placer) after tailings discarding by preconcentration or weathered ore washup-ore of 10mm is through primary grinding (6), the grinding machine ore discharge is through spiral grading sieve (7) classification, + 3mm ore returns ore mill (6) and regrinds ,-3～0mm ore enter low intensity magnetic separation machine (12) roughly select rough concentrate
1And rough concentrate
2, rough concentrate
2Take off magnetic and enter for the first time that midfield intensity magnetic separator (18) dumps mine tailing
2Get rough concentrate
3, rough concentrate
3Filtration drying (13) enters fluidizing furnace (or rotary kiln or ramp type stoving oven) magnetizing roasting (14), magnetizing roasting rough concentrate and rough concentrate
1Enter second section grinding machine (15) fine grinding, second section grinding machine ore discharge is through spiral grading sieve (or hydrocyclone) (16) classification, and+0.15mm returns in the ore deposit secondary grinding machine (15) and regrinds, and-0.15mm ore gets concentrate through low intensity magnetic separation machine (12)
4, the low intensity magnetic separation mine tailing through take off magnetic enter for the second time midfield intensity magnetic separator (19) concentrate
5, secondary midfield intensity magnetic separator (19) mine tailing enters for the third time through taking off magnetic that midfield intensity magnetic separator (20) dumps mine tailing
3Get concentrate
6, concentrate
4, concentrate
5And concentrate
6Mix concentrated ilmenite (or titanium sand concentrate).
Shown in Fig. 1,4, concentrated ilmenite (or the titanium placer) electrosmelting that the magnetizing roasting stage grinding and stage separation is produced is produced titanium slag (the molten titanium slag that divides), its process is: concentrated ilmenite (or titanium placer), perhaps this concentrated ilmenite (or titanium placer) and sefstromite concentrate (or ilmenite concentrate) mix back (22) behind binding agent (wilkinite etc.) and the carbonaceous reducing agent mixing by a certain percentage, make pelletizing (23), advance rotary kiln (24) prereduction or, smelt production half steel (alloy hot metal) and titanium slag (the molten titanium slag that divides) (TiO at the hot stove of electric blast furnace or ore deposit (25) directly into stove
2＞68%), alloy hot metal blows vanadium chromium through duplex practice, the slag that gained contains vanadium chromium separates vanadium chromium with hydrometallurgical extraction, and enter the rich titanium material of gravity concentration process production higher-grade solubility in acid after titanium slag (molten branch titanium slag) the secluding air cooling, or titanium slag (the molten titanium slag that divides) enters the rich titanium material of pyrometallurgy ore dressing process production rutile.
Shown in Fig. 1,4, utilize titanium slag (the molten titanium slag that divides) the rich titanium material of production higher-grade solubility in acid, its process is: titanium slag (molten divide titanium slag) send into vacuum pump (27) take out cool off in the cool furnace (26) of air or input inert gas after, carry out fragmentation (28), ore grinding (29), gravity concentration (30), mine tailing is processed into devitrified glass, chats returns electrosmelting (25), TiO
2It is that the rich titanium material of solubility in acid of 0.045mm～0.075mm is as producing the optimal raw material of sulfate process titanium dioxide that the rich titanium material of 75%～92% solubility in acid is worn into fineness through Raymond mill (31).
As Fig. 1, shown in 4, utilize titanium slag (the molten titanium slag that divides) or the rich titanium material of solubility in acid pyrometallurgy ore dressing to produce the rich titanium material of rutile, its process is: titanium slag (molten divide a titanium slag) or enter insulation crystallization oxidized still (32) without the rich titanium material of the solubility in acid of Raymond mill (31) fine grinding, heat oxygen blast with the electric-arc heating oxygen blast or with oxygen-Fuel lance or oxygen (air) direct current plasma producer to insulation oxidized still (32), add silica simultaneously, fluoride additive, titanium slag or the rich titanium material of solubility in acid are carried out deep oxidation, make the main titaniferous ore anosovite (Ti in titanium slag or the rich titanium material
3O
5Solid solution for base) titanium suboxide in is oxidized to the rutile (TiO of octahedral structure
2), impurity such as calcium magnesium are left out, and enter in the silicate glass body, form the rich titanium material of rutilization, the rich titanium material of this rutilization makes the cooling of rutile grain growth in annealer (33) after broken (34), and ore grinding (35) and gravity treatment (36) dump mine tailing, must TiO
2The rich titanium material of＞92%～96% low calcium and magnesium artificial rutile, chats returns the melting oxidation once more of insulation oxidized still (32), and to improve the rate of recovery of titanium, mine tailing is processed into devitrified glass.
Shown in Fig. 1,4, utilize the rich titanium material of low calcium and magnesium artificial rutile (TiO
2＞92%～96%) produce the rich titanium material of carbon containing rutile, its process is: the rich titanium material of rutile (TiO
2＞92%～98%) and coal (fixed carbon C＞60%) through grinding machine (37), (38) fine grinding to-0.045mm (325 order) and binding agent (wood pulp etc.) (39) mixing (C/TiO for preparing burden
2＞20%～30%, binding agent 0.3%～0.6%), granulation (40), the roasting 20 minutes (41) in 900 ℃～950 ℃ stoving ovens of carbon containing titanium grain, then carbon containing titanium grain is sent into vacuum pump (42) take out air or have prevent carbon containing titanium grain oxidation cooling in the water cooler (43) of inert gas after, through double-layer spiral sizing screen or two individual layer screw classifiers (44) classification,-0.3mm grade and+1.4mm grade carbon containing titanium grain returns grinding machine (37) (37) recycle of regrinding ,+0.3mm～-the rich titanium material of carbon containing rutile of 1.4mm grade is as the optimal raw material of production chlorination process rutile titanium white.
Claims (9)
1. a method of utilizing titanium ore to produce rich titanium material comprises the steps:
(A) ,+70mm titanium ore (vanadium titano-magnetite, titanium placer) in three kinds of purpose mineral (titanomagnetite, granular ilmenite and sulfide) mix and to select smelting, it is characterized in that: through prescreening machine (1), electromagnetism roller (2) is roughly selected, and electromagnetism roller (3) is scanned and dumped mine tailing
1The preliminary election ore reaches test sieve extension set (4) through in advance, + 10mm ore advances fine crusher (5),-10～0mm ore enters primary grinding machine (6) ore grinding after taking off magnetic, the grinding machine ore discharge is through spiral grading sieve (7) classification, + 3mm ore returns grinding machine and regrinds, and-3～0mm ore enters gravity treatment for the first time or the low intensity magnetic separation technical process of taking the lead.
(B) ,+70mm weathered ore (vanadium titano-magnetite, titanium placer) in three kinds of purpose mineral (titanomagnetite, granular ilmenite and sulfide) mix and to select smelting, it is characterized in that: warp is every sieve (8), + 70mm nugget is crushed to-70～0mm through stoning machine (9), through log washer (10) washup, + 10mm ore enters fine crusher (5),-10mm ore enters first section ore mill (6), the grinding machine ore discharge is through spiral grading sieve (7) classification, + 3mm ore returns grinding machine (6) and regrinds, and-3～0mm ore enters gravity treatment for the first time or the low intensity magnetic separation technical process of taking the lead.
(C), produce concentrated ilmenite (or titanium sand concentrate) by magnetizing roasting stage grinding and stage separation " ore grinding-gravity treatment-low intensity magnetic separation-magnetizing roasting-ore grinding-gravity treatment-high intensity magnetic separation " technical process, it is characterized in that :-70mm titanium ore (vanadium titano-magnetite, titanium placer) after tailings discarding by preconcentration or weathered ore washup-ore of 10mm is through primary grinding (6), the grinding machine ore discharge is through spiral grading sieve (7) classification, returning grinding machine (6) greater than the ore of 3mm regrinds, enter gravity concentrator (11) less than the ore of 3mm and roughly select, dump mine tailing
2Get rough concentrate
1, chats through low intensity magnetic separation machine (12) roughly select rough concentrate
2, the low intensity magnetic separation mine tailing enters fluidizing furnace (or rotary kiln or ramp type stoving oven) magnetizing roasting (14), magnetizing roasting rough concentrate and rough concentrate after taking off magnetic, filtration drying (13)
1, rough concentrate
2Enter two sections grinding machines (15) fine grinding, two sections grinding machine ore discharges are through taking off magnetic spiral grading sieve (or hydrocyclone) (16) classification, + 0.15mm ore returns grinding machine (15) and regrinds,-0.15mm the mineral of monomer dissociation (purpose mineral and gangue mineral) carries out the gravity treatment second time through gravity concentrator (17) and roughly selects, concentrate
3And mine tailing
3, the gravity treatment chats through a midfield intensity magnetic separator (18) roughly select concentrate
1, midfield high intensity magnetic separation mine tailing takes off magnetic compass secondary midfield intensity magnetic separator (19) and scans and dump mine tailing
1Get concentrate
5, concentrate
3, concentrate
1And concentrate
5Mix concentrated ilmenite (or titanium sand concentrate).
(D), produce concentrated ilmenite (or titanium sand concentrate) by magnetizing roasting stage grinding and stage separation " ore grinding-low intensity magnetic separation-high intensity magnetic separation-magnetizing roasting-ore grinding-low intensity magnetic separation-high intensity magnetic separation " technical process, it is characterized in that :-70mm titanium ore (vanadium titano-magnetite or titanium placer) after tailings discarding by preconcentration or weathered ore washup-ore of 10mm is through primary grinding (6), the grinding machine ore discharge is through spiral grading sieve (7) classification, + 3mm ore returns ore mill (6) and regrinds ,-3～0mm ore enter low intensity magnetic separation machine (12) roughly select rough concentrate
1And rough concentrate
2, rough concentrate
2Take off magnetic and enter for the first time that midfield intensity magnetic separator (18) dumps mine tailing
2Get rough concentrate
3, rough concentrate
3Filtration drying (13) enters fluidizing furnace (or rotary kiln or ramp type stoving oven) magnetizing roasting (14), magnetizing roasting rough concentrate and rough concentrate
1Enter second section grinding machine (15) fine grinding, second section grinding machine ore discharge is through spiral grading sieve (or hydrocyclone) (16) classification, and+0.15mm returns in the ore deposit secondary grinding machine (15) and regrinds, and-0.15mm ore gets concentrate through low intensity magnetic separation machine (12)
4, the low intensity magnetic separation mine tailing through take off magnetic enter for the second time midfield intensity magnetic separator (19) concentrate
5, secondary midfield intensity magnetic separator (19) mine tailing enters for the third time through taking off magnetic that midfield intensity magnetic separator (20) dumps mine tailing
3Get concentrate
6, concentrate
4, concentrate
5And concentrate
6Mix concentrated ilmenite (or titanium sand concentrate).
(E), concentrated ilmenite (or the titanium placer) electrosmelting of magnetizing roasting stage grinding and stage separation production is produced titanium slag (the molten titanium slag that divides), it is characterized in that: concentrated ilmenite (or titanium placer), perhaps this concentrated ilmenite (or titanium placer) and sefstromite concentrate (or ilmenite concentrate) mix back (22) behind binding agent (wilkinite etc.) and the carbonaceous reducing agent mixing by a certain percentage, make pelletizing (23), advance rotary kiln (24) prereduction or, smelt production half steel (alloy hot metal) and titanium slag (the molten titanium slag that divides) (TiO at the hot stove of electric blast furnace or ore deposit (25) directly into stove
2＞68%), alloy hot metal blows vanadium chromium through duplex practice, the slag that gained contains vanadium chromium separates vanadium chromium with hydrometallurgical extraction, and enter the rich titanium material of gravity concentration process production higher-grade solubility in acid after titanium slag (molten branch titanium slag) the secluding air cooling, or titanium slag (the molten titanium slag that divides) enters the rich titanium material of pyrometallurgy ore dressing process production rutile.
(F), titanium slag (the molten titanium slag that divides) the rich titanium material of gravity concentration production higher-grade solubility in acid, it is characterized in that: titanium slag (molten divide titanium slag) send into vacuum pump (27) take out cool off in the cool furnace (26) of air or input inert gas after, carry out fragmentation (28), ore grinding (29), gravity concentration (30), mine tailing is processed into devitrified glass, and chats returns electrosmelting (25), TiO
2The rich titanium material of 75%～92% solubility in acid is worn into the rich titanium material of solubility in acid that fineness is 0.045mm～0.075mm through Raymond mill (31).
(G), the rich titanium material of rutile is produced in titanium slag (the molten titanium slag that divides) or the rich titanium material of solubility in acid pyrometallurgy ore dressing, it is characterized in that: titanium slag (molten divide a titanium slag) or enter insulation crystallization oxidized still (32) without the rich titanium material of the solubility in acid of Raymond mill (31) fine grinding, heat oxygen blast with the electric-arc heating oxygen blast or with oxygen-Fuel lance or oxygen (air) direct current plasma producer to insulation oxidized still (32), add silica, fluoride additive simultaneously, titanium slag or the rich titanium material of solubility in acid are carried out deep oxidation, make the main titaniferous ore anosovite (Ti in titanium slag or the rich titanium material
3O
5Solid solution for base) titanium suboxide in is oxidized to the rutile (TiO of octahedral structure
2), impurity such as calcium magnesium are left out, and enter in the silicate glass body, form the rich titanium material of rutilization, the rich titanium material of this rutilization makes the cooling of rutile grain growth in annealer (33) after broken (34), and ore grinding (35) and gravity treatment (36) dump mine tailing, must TiO
2The rich titanium material of＞92%～96% low calcium and magnesium artificial rutile, chats returns the melting oxidation once more of insulation oxidized still (32), and to improve the rate of recovery of titanium, mine tailing is processed into devitrified glass.
(H), the rich titanium material of the low calcium and magnesium artificial rutile (TiO of pyrometallurgy ore dressing production
2＞92%～96%) produces the rich titanium material of carbon containing rutile, it is characterized in that: the rich titanium material of rutile (TiO
2＞92%～98%) and coal (fixed carbon C＞60%) through grinding machine (37), (38) fine grinding to-0.045mm (325 order) and binding agent (wood pulp etc.) (39) mixing (C/TiO for preparing burden
2＞20%～30%, binding agent 0.3%～0.6%), granulation (40), the roasting 20 minutes (41) in 900 ℃～950 ℃ stoving ovens of carbon containing titanium grain, then carbon containing titanium grain is sent into vacuum pump (42) take out air or have prevent carbon containing titanium grain oxidation cooling in the water cooler (43) of inert gas after, through double-layer spiral sizing screen or two individual layer screw classifiers (44) classification,-0.3mm grade and+1.4mm grade carbon containing titanium grain returns grinding machine (37) recycle of regrinding ,+0.3mm～-the rich titanium material of carbon containing rutile of 1.4mm grade.
2. a kind of method of utilizing titanium ore to produce rich titanium material according to claim 1, it is characterized in that: in the ore tailings discarding by preconcentration technological process of production,-70mm titanium ore (vanadium titano-magnetite, titanium placer) is through prescreening machine (1), and electromagnetism roller (2) is roughly selected, and electromagnetism roller (3) is scanned and dumped mine tailing
1The preliminary election ore reaches test sieve extension set (4) through in advance, + 10mm ore advances fine crusher (5),-10～0mm ore enters primary grinding machine (6) ore grinding after taking off magnetic, the grinding machine ore discharge is through spiral grading sieve (7) classification, + 3mm ore returns grinding machine and regrinds, and-3～0mm ore enters gravity treatment for the first time or the low intensity magnetic separation technical process of taking the lead, and produces concentrated ilmenite (or titanium sand concentrate).
3. a kind of method of utilizing titanium ore to produce rich titanium material according to claim 1, it is characterized in that: in its weathered ore washup technological process of production, the weathered ore warp is every sieve (8), + 70mm nugget is crushed to-70～0mm through stoning machine (9), through log washer (10) washup, + 10mm ore enters fine crusher (5),-10mm ore enters first section ore mill (6), the grinding machine ore discharge is through spiral grading sieve (7) classification, + 3mm ore returns grinding machine (6) and regrinds,-3～0mm ore enters gravity treatment for the first time or the low intensity magnetic separation technical process of taking the lead, and produces concentrated ilmenite (or titanium sand concentrate).
4. a kind of method of utilizing titanium ore to produce rich titanium material according to claim 1, it is characterized in that: the magnetizing roasting stage grinding and stage separation is produced concentrated ilmenite (or titanium sand concentrate) by " ore grinding-gravity treatment-low intensity magnetic separation-magnetizing roasting-ore grinding-gravity treatment-high intensity magnetic separation " technical process, its process is-70mm titanium ore (vanadium titano-magnetite, titanium placer) after tailings discarding by preconcentration or weathered ore washup-ore of 10mm is through primary grinding (6), the grinding machine ore discharge is through spiral grading sieve (7) classification, returning grinding machine (6) greater than the ore of 3mm regrinds, enter gravity concentrator (11) less than the ore of 3mm and roughly select, dump mine tailing
2Get rough concentrate
1, chats through low intensity magnetic separation machine (12) roughly select rough concentrate
2, the low intensity magnetic separation mine tailing enters fluidizing furnace (or rotary kiln or ramp type stoving oven) magnetizing roasting (14), magnetizing roasting rough concentrate and rough concentrate after taking off magnetic, filtration drying (13)
1, rough concentrate
2Enter two sections grinding machines (15) fine grinding, two sections grinding machine ore discharges take off magnetic compass spiral grading sieve (or hydrocyclone) (16) classification, + 0.15mm ore returns grinding machine (15) and regrinds,-0.15mm the mineral of monomer dissociation (purpose mineral and gangue mineral) carries out the gravity treatment second time through gravity concentrator (17) and roughly selects, concentrate
3And mine tailing
3, the gravity treatment chats through a midfield intensity magnetic separator (18) roughly select concentrate
4, midfield high intensity magnetic separation mine tailing takes off magnetic compass secondary midfield intensity magnetic separator (19) and scans and dump mine tailing
4Get concentrate
5, concentrate
3, concentrate
4And concentrate
5Mix concentrated ilmenite (or titanium sand concentrate).
5. a kind of method of utilizing titanium ore to produce rich titanium material according to claim 1, it is characterized in that: another technical process of magnetizing roasting stage grinding and stage separation is produced concentrated ilmenite (or titanium sand concentrate) by " ore grinding-low intensity magnetic separation-high intensity magnetic separation-magnetizing roasting-ore grinding-low intensity magnetic separation-high intensity magnetic separation " technical process,-70mm titanium ore (vanadium titano-magnetite, titanium placer) after tailings discarding by preconcentration or weathered ore washup-ore of 10mm is through primary grinding (6), the grinding machine ore discharge is through spiral grading sieve (7) classification, + 3mm ore returns ore mill (6) and regrinds ,-3～0mm ore enter low intensity magnetic separation machine (12) roughly select rough concentrate
1And rough concentrate
2, rough concentrate
2Take off magnetic and enter for the first time that midfield intensity magnetic separator (18) dumps mine tailing
2Get rough concentrate
3, rough concentrate
3Filtration drying (13) enters fluidizing furnace (or rotary kiln or ramp type stoving oven) magnetizing roasting (14), magnetizing roasting rough concentrate and rough concentrate
1Enter second section grinding machine (15) fine grinding, second section grinding machine ore discharge is through spiral grading sieve (or hydrocyclone) (16) classification, and+0.15mm returns in the ore deposit secondary grinding machine (15) and regrinds, and-0.15mm ore gets concentrate through low intensity magnetic separation machine (12)
4, the low intensity magnetic separation mine tailing through take off magnetic enter for the second time midfield intensity magnetic separator (19) concentrate
5, secondary midfield intensity magnetic separator (19) mine tailing enters for the third time through taking off magnetic that midfield intensity magnetic separator (20) dumps mine tailing
3Get concentrate
6, concentrate
4, concentrate
5And concentrate
6Mix concentrated ilmenite (or titanium sand concentrate).
6. a kind of method of utilizing titanium ore to produce rich titanium material according to claim 1, the concentrated ilmenite (or titanium sand concentrate) that the magnetizing roasting stage grinding and stage separation is produced, electrosmelting is produced titanium slag (the molten titanium slag that divides), it is characterized in that: concentrated ilmenite (or titanium placer), perhaps this concentrated ilmenite (or titanium placer) and sefstromite concentrate (or ilmenite concentrate) mix back (22) behind binding agent (wilkinite etc.) and the carbonaceous reducing agent mixing by a certain percentage, make pelletizing (23), advance rotary kiln (24) prereduction or, smelt production half steel (alloy hot metal) and titanium slag (the molten titanium slag that divides) (TiO at the hot stove of electric blast furnace or ore deposit (25) directly into stove
2＞68%), alloy hot metal blows vanadium chromium through duplex practice, the slag that gained contains vanadium chromium separates vanadium chromium with hydrometallurgical extraction, and enter the rich titanium material of gravity concentration process production higher-grade solubility in acid after titanium slag (molten branch titanium slag) the secluding air cooling, or titanium slag (the molten titanium slag that divides) enters the rich titanium material of pyrometallurgy ore dressing process production rutile.
7, a kind of method of utilizing titanium ore to produce rich titanium material according to claim 1, titanium slag (the molten titanium slag that divides) the rich titanium material of gravity concentration production higher-grade solubility in acid, it is characterized in that: titanium slag (molten divide titanium slag) send into vacuum pump (27) take out cool off in the cool furnace (26) of air or input inert gas after, carry out fragmentation (28), ore grinding (29), gravity concentration (30), mine tailing is processed into devitrified glass, chats returns electrosmelting (25), TiO
2The rich titanium material of 75%～92% solubility in acid is worn into the rich titanium material of solubility in acid that fineness is 0.045mm～0.075mm through Raymond mill (31).
8. a kind of method of utilizing titanium ore to produce rich titanium material according to claim 1, the rich titanium material of rutile is produced in titanium slag (the molten titanium slag that divides) or the rich titanium material of solubility in acid pyrometallurgy ore dressing, it is characterized in that: titanium slag (molten divide a titanium slag) or enter insulation crystallization oxidized still (32) without the rich titanium material of the solubility in acid of Raymond mill (31) fine grinding, heat oxygen blast with the electric-arc heating oxygen blast or with oxygen-Fuel lance or oxygen (air) direct current plasma producer to insulation oxidized still (32), add silica simultaneously, fluoride additive, titanium slag or the rich titanium material of solubility in acid are carried out deep oxidation, make the main titaniferous ore anosovite (Ti in titanium slag or the rich titanium material
3O
5Solid solution for base) titanium suboxide in is oxidized to the rutile (TiO of octahedral structure
2), impurity such as calcium magnesium are left out, and enter in the silicate glass body, form the rich titanium material of rutilization, the rich titanium material of this rutilization makes the cooling of rutile grain growth in annealer (33) after broken (34), and ore grinding (35) and gravity treatment (36) dump mine tailing, must TiO
2The rich titanium material of＞92%～96% low calcium and magnesium artificial rutile, chats returns the melting oxidation once more of insulation oxidized still (32), and to improve the rate of recovery of titanium, mine tailing is processed into devitrified glass.
9, a kind of method of utilizing titanium ore to produce rich titanium material according to claim 1 is with the rich titanium material of the artificial rutile (TiO of pyrometallurgy ore dressing production
2＞92%～96%) produces the rich titanium material of carbon containing rutile, it is characterized in that: the rich titanium material of rutile (TiO
2＞92%～98%) and coal (fixed carbon C＞60%) through grinding machine (37), (38) fine grinding to-0.045mm (325 order) and binding agent (wood pulp etc.) (39) mixing (C/TiO for preparing burden
2＞20%～30%, binding agent 0.3%～0.6%), granulation (40), the roasting 20 minutes (41) in 900 ℃～950 ℃ stoving ovens of carbon containing titanium grain, then carbon containing titanium grain is sent into vacuum pump (42) take out air or have prevent carbon containing titanium grain oxidation cooling in the water cooler (43) of inert gas after, through double-layer spiral sizing screen or two individual layer screw classifiers (44) classification,-the 0.3mm grade and+1.4mm grade carbon containing titanium grain returns grinding machine (37) recycle of regrinding ,+0.3mm～-the rich titanium material of 1.4mm grade carbon containing rutile.
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