CN102166542B - Beneficiation method for comprehensively utilizing low-grade lean ore and external ore of vanadium titano-magnetite - Google Patents
Beneficiation method for comprehensively utilizing low-grade lean ore and external ore of vanadium titano-magnetite Download PDFInfo
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Abstract
A mineral separation method for comprehensively utilizing vanadium-titanium magnetite comprises the steps of mixing and mining internal and external ores on the surface, crushing the mixed ore to the granularity of-10 mm 100%, carrying out weak magnetic roughing or medium magnetic roughing on the crushed product, selecting a mineral aggregate with the titanium magnetite as a main part, then carrying out strong magnetic scavenging on roughing tailings, selecting a mineral aggregate with the ilmenite as a main part, combining the mineral aggregate and the mineral aggregate into pre-sorted concentrate, and discarding gangue with the yield of 31.88% -33.20%. And then, carrying out coarse grinding at the I section until the granularity is 1mm to 100%, carrying out weak and neutral strong magnetic separation, discarding coarse gangue, carrying out fine grinding at the II section of the obtained coarse mixed concentrate until the granularity is 0.15mm to 100%, and adding a regulator, a xanthate collecting agent and a foaming agent into the ground product at the II section to carry out flotation on sulphide ore so as to obtain high-quality sulphur-cobalt concentrate. And then carrying out weak magnetic separation on the sulfur-bearing tailings to obtain high-quality iron ore concentrate. Performing strong magnetic titanium separation on the iron separation tailings, further enriching ilmenite to obtain strong magnetic concentrate, and adding a regulator, sodium aliphatate and an auxiliary collector into the strong magnetic concentrate to perform flotation on the ilmenite to obtain high-grade ilmenite concentrate.
Description
Technical field
The invention belongs to the mineral resources comprehensive utilization field, particularly relate to the technique of preparation method of the low-grade lean ore of a kind of comprehensive utilization of V-Ti magnetite and unbalanced-ore.
Background technology
Sichuan-Xichang Region is the topmost metallogenic belt of China's vanadium titano-magnetite, also is one of the important producing region in the world mineral deposit of the same type.In addition, in the Chengde, Xingning of Guangdong Province, Yun county, Hubei sun, Xiangyang, Hanzhong, Ankang, also there is the v-ti magnetite ore resources in the areas such as Hami, Bachu and Shanxi Dai County.The industrial index that in November, 1976, the competent departments concerned of country assigned the Panxi, Sichuan vanadium titano-magnetite is that the ore of TFe grade 〉=45% is high-grade ore, the ore of TFe grade 〉=30% is middle grade ore deposit, the ore of TFe grade between 30%～20% is low-grade ore, high-grade ore, middle grade ore deposit and low-grade ore are decided to be ore deposit in the table, are to develop resource; The extreme poverty ore of TFe grade between 20%～15% is decided to be unbalanced-ore, and unbalanced-ore is the resource that can not develop, and is admitted to waste-rock yard as barren rock in the mining process.In explored more than the 95.76 hundred million tons of v-ti magnetite ore resources of Sichuan-Xichang Region, the ore in most mining areas all is ore deposit low-grade ore and unbalanced-ore in the table, and wherein, the unbalanced-ore reserves account for and verify 40% of total amount.The vanadium titano-magnetite industrial index has been revised in Sichuan Province storage committee in 1996 approval, the low-grade lean ore of TFe grade between 23%～20% is decided to be still difficulty utilizes the ore deposit, still difficulty utilizes the ore deposit the same with unbalanced-ore, also is admitted to waste-rock yard as barren rock in the mining process.Industrial index by this modification calculates, and in the explored v-ti magnetite ore reserves of China, ore reserves significantly reduces in the table that can develop, and the v-ti magnetite ore reserves that can not develop then increases considerably.The Hongge Deposit of Panxi, Sichuan v-ti magnetite ore reserves maximum for example, nearly 3,600,000,000 tons of explored ore reserve, TFe weighted average grade of ore deposit and unbalanced-ore only is 21.49%～21.19% in its table, divides by this industrial index, and whole Hongge Deposit has just all become the resource that can not develop.Moreover, in other regional v-ti magnetite ore reserves of China, only have Chengde vanadium titano-magnetite that grade ore deposit in more than 200,000,000 ton is arranged, remaining nearly all is unbalanced-ore.With regard to national vanadium titano-magnetite, more than 2/3rds of the shared vanadium titano-magnetite gross reserves of the reserves of its unbalanced-ore and low-grade lean ore.
In climbing the table of western vanadium titano-magnetite, not only contain iron in ore deposit and the unbalanced-ore, titanium, three kinds of major metal components of vanadium, also association has the chromium that can be fully utilized altogether, cobalt, nickel, copper, platinum family, gallium, the metal components such as scandium, reserves with ore deposit in its table calculate, titanium accounts for 93% of national reserves, vanadium accounts for 64% of national reserves, the reserves of iron occupy national second, 9,490,000 tons of chrome green reserves, 690,000 tons of cobalt reserves, 1,440,000 tons of nickel reserves, 1,100,000 tons of copper reserves, 1383 tons of platinum group metal reserves, 110,000 tons of gallium reserves, 150,000 tons of scandium reserves etc., these useful metal components have high economic worth and social value.In order to develop the low-grade lean ore of vanadium titano-magnetite and unbalanced-ore, inventor's result of study shows, the mineral species of climbing the interior ore deposit of western vanadium titano-magnetite table and unbalanced-ore is identical, all by titanomagnetite, granular ilmenite, gangue mineral and seldom the sulphide ore of amount formed, difference is the mineral content difference.Wherein, titanomagnetite (is as matrix take magnetic iron ore, solid solution has the complex mineral of microfine ulvite, ilmenite and magnesium aluminate spinel, be can not physical separation complex mineral) be the mineral that select iron, vanadium etc. to reclaim, granular ilmenite is the mineral that select titanium to reclaim, sulphide ore (be take magnetic iron ore as main and with the pyrite of its symbiosis, chalcopyrite, cobalt Ni sulphide mine etc.) be the mineral that comprehensively reclaim cobalt, nickel sulfide.
In order to take full advantage of Panxi, Sichuan vanadium titano-magnetite mineral resources, once unbalanced-ore was carried out a large amount of beneficiation test work in the past, for example carried out different feed particle sizes and select iron tests and select ironworker industry pilot production climbing western Panzhihua Mining Area unbalanced-ore, obtained the iron ore concentrate of productive rate 14.52%, TFe grade 54.03%, the TFe rate of recovery 43.89%, only reclaimed the iron in the unbalanced-ore, the Hubeiwans such as titanium, cobalt nickel sulphur thing in the uncomprehensive recovery unbalanced-ore.Also carried out selecting the ironworker already to test to climbing western Hongge Deposit district unbalanced-ore, only reclaimed the iron in the unbalanced-ore, do not had comprehensively to reclaim the Hubeiwans such as titanium in the unbalanced-ore, cobalt nickel sulphur thing.Showed climbing western vanadium titano-magnetite unbalanced-ore mining processing industry test and techno-economic feasibility study thereof in the past, ratio of concentration is large, select the iron cost high, manufacturing loss, therefore, unbalanced-ore can not develop, and climbs in the western vanadium titano-magnetite table in the process of ore deposit large-scale developing and utilizing, and unbalanced-ore can only be abandoned as barren rock.Abroad, process the low grade vanadium titanomagnetite except the processing of Muscovite KOH-KAE card nail (unit of length) (KattKaHap) ore dressing plant and only produce the iron ore concentrate, do not develop the low grade vanadium titanomagnetite, more do not utilize its unbalanced-ore.In recent years, because iron ore price improves constantly, some enterprises were the v-ti magnetite green ores that exploitation utilizes TFe32% in the past, peeled off the interior ore deposit of low-grade table of discarded TFe18%～24% (average 21%), began that in recent years the dry type preliminary election is carried out in ore deposit in the low-grade table that goes out of use and reclaimed.Some enterprises sort the interior ore deposit of table and the unbalanced-ore mixing ore deposit of ore deposit, Pan Xi Baima vanadium titano-magnetite in recent years, the raw ore TFe average grade about 25% that exploitation is selected is only selected iron, does not select titanium, mill ore magnetic selection selects the mine tailing TFe grade about 15% of iron, to utilization of resources weak effect.Therefore, in order to realize economy, efficiently, reasonably to develop the low-grade lean ore of vanadium titano-magnetite and unbalanced-ore, the needs that develop rapidly to satisfy the industries such as China's iron and steel, vanadium, titanium, this area is badly in need of a kind of the have low-grade lean ore of comprehensive utilization of V-Ti magnetite of industrial production technology economic benefit and the technique of preparation method of unbalanced-ore at present.
Summary of the invention
The beneficiation method that the purpose of this invention is to provide the low-grade lean ore of a kind of comprehensive utilization of V-Ti magnetite and unbalanced-ore, the huge low-grade lean ore of vanadium titano-magnetite and the unbalanced-ore resource of reserves discarded on the traditional sense is promoted to the precious resources that can be exploited, economical, efficiently, reasonably realize the comprehensive utilization of the low-grade lean ore of vanadium titano-magnetite and unbalanced-ore.
To achieve these goals, the present invention adopts the technique of preparation method of the low-grade lean ore of following comprehensive utilization of V-Ti magnetite and unbalanced-ore, and this technique of preparation method comprises following processing step:
(1) ore deposit and unbalanced-ore in the vanadium titano-magnetite table are carried out mixed mining, adopt three-section closed circuit broken with the ore deposit of mixing of unbalanced-ore in ore deposit in the exploitation table out, be crushed to granularity-10mm 100%;
(2) adopt the weak magnetic of wet type cartridge type permanent magnetism to roughly select to the crushed product of water content＞3% or middle magnetic is roughly selected, adopt wet type cartridge type permanent magnetic strong magnetic to scan to rougher tailings, perhaps adopt the weak magnetic of dry type cartridge type permanent magnetism to roughly select to the crushed product of water content＜3% or middle magnetic is roughly selected, adopt dry type cartridge type permanent magnetic strong magnetic to scan to rougher tailings, obtain abandoning the Pre-sorting mine tailing of productive rate 〉=31.88% take titanomagnetite as main roughly selecting product and merge the Pre-sorting concentrate that consists of together take ilmenite as the main product of scanning;
(3) adopt ore grinding-sieve classification closed circuit grinding technique, the Pre-sorting concentrate is carried out I section corase grind ore grinding;
(4) I section corase grind product is carried out the wet type permanent magnet low intensity magnetic separation, the low intensity magnetic separation mine tailing is carried out magnetic separation in the wet type permanent magnet, the centering magnetic tailing carries out high intensity magnetic separation, obtain merging the coarse grain bulk concentrate that consists of together by low intensity magnetic separation concentrate, middle magnetic concentrate and high intensity magnetic separation concentrate, abandon relative Pre-sorting concentrate yield and be 31.31%～37.79% coarse grain mine tailing;
(5) adopt fine grinding dusting cover closed circuit grinding technique that the coarse grain bulk concentrate is carried out II section ore grinding, and sorting obtain respectively nickeliferous sulphur cobalt concentrate (hereinafter to be referred as the sulphur cobalt concentrate), vanadium iron concentrate (hereinafter to be referred as iron ore concentrate) and ilmenite concentrate product to II section ore milling product.
Wherein the granularity of the described I section corase grind of step (3) product is-1mm 100%.
Wherein the granularity of the described II section of step (5) ore milling product is-0.15mm 100%.
The wherein described sorting of step (5) adds adjusting agent, xanthate collectors and foaming agent Flotation of Sulfide Ores to II section ore milling product, obtains to be 1.25%～1.37% to mixing the green ore productive rate, the sulphur cobalt concentrate of grade Co 0.538%～0.471%.Then, floating sulphur mine tailing is carried out low intensity magnetic separation select iron, obtain being 16.49%～16.82% to mixing the green ore productive rate, grade TFe58.75%～58.21%, V
2O
50.716%～0.687% iron ore concentrate.Then, iron selection tailings is carried out the high intensity magnetic separation titanium, obtain the high intensity magnetic separation concentrate, abandon the high intensity magnetic separation mine tailing to high intensity magnetic separation operation productive rate 40%～45%.Then, described high intensity magnetic separation concentrate is added adjusting agent, sodium soap and supplementary catching agent flotation ilmenite, obtain being 12.15%～12.39% to mixing the green ore productive rate, grade TiO
248.61%～48.37%, the ilmenite concentrate of TFe32.27%～32.63% abandons flotation titanium mine tailing.
Studies show that in a large number through the inventor, the one, ore deposit and unbalanced-ore have the technological property that under-10mm100% lumpiness Pre-sorting is abandoned mine tailing in the low-grade table of vanadium titano-magnetite, can dissociate the gangue of a large amount of-10mm in the product in small, broken bits under this granularity, be the valuable mineral in the enriching and recovering ore, abandon as early as possible a large amount of gangues that dissociated, the Pre-sorting material base is provided; The 2nd, the Pre-sorting concentrate has the technological property that the corase grind cobbing is abandoned the coarse grain mine tailing, the Pre-sorting concentrate is carried out I section closed circuit grinding, be milled to granularity-1mm 100%, under this grinding particle size, can dissociate the gangue of a large amount of granularity-1mm, be further abundant enriching and recovering titanomagnetite, ilmenite and sulphide ore, abandon as early as possible the gangue of granularity-1mm, material base is provided; The 3rd, when the crushed product water content of granularity-10mm 100%＞3%, the Pre-sorting index obviously descends, and during water content＞5%, loses Pre-sorting.Four during the last ten years, the inventor to domestic and international different mining areas different grade vanadium titano-magnetite component of gold mineral, Structural Tectonics, mineral intergrowth embedding cloth, mineral crystal granularity, physical and chemical property is constantly studied and system in depth fully utilizes on the basis of Experimental study on ore dressing, successfully researched and developed and both be suitable for comprehensive utilization of V-Ti magnetite low-grade ore, unbalanced-ore, be suitable for again the inside and outside ore-dressing technique technical method that mixes the ore deposit of comprehensive utilization table, in the industrial comprehensive utilization that has realized the low-grade lean ore of vanadium titano-magnetite and unbalanced-ore resource.Compared with prior art, comprehensive utilization ore-dressing technique technical method of the present invention mainly has following good technique effect and superiority:
First, take full advantage of the each other characteristics of stratiform output that are that the interior ore deposit of vanadium titano-magnetite table and unbalanced-ore have in the ore body spatial distribution, adopt mixed mining, than minute adopting in the past, partite transport, abandon the development scheme of low-grade lean ore and unbalanced-ore, can reduce stripping-to-ore ratio, improve resource utilization, improve mining efficiency, reduce mining cost;
Second, the Technological Characteristic of Ore Mineral that research is found out and Pre-sorting test show, ore deposit and unbalanced-ore have the technological property that under-10mm 100% lumpiness Pre-sorting is abandoned mine tailing in the low-grade table of vanadium titano-magnetite, can dissociate the gangue of a large amount of-10mm in the product in small, broken bits under this granularity; When Pre-sorting lump footpath＞10mm, the larger gangue degree of dissociation in lump footpath is lower, and the Pre-sorting effect is poorer; When Pre-sorting lump footpath＜10mm, though increase with the diminish mine tailing productive rate abandoned of particle diameter, but the fine granularity that present in the world state-of-the-art large-scale fine crusher can reach is-10mm, if Pre-sorting ore particle degree is thin again, on large industrial production, must go to have realized by ore grinding, this obviously is unreasonable, uneconomic concerning a large amount of gangues that dissociateed at lump footpath-10mm enter ore grinding again.Therefore, the mixing ore deposit of ore deposit and unbalanced-ore is crushed to-10mm 100% in the present invention's table that will exploit out.
The 3rd, crushed product is by step (2) and the described Pre-sorting of step (3), fully reclaim enrichment take titanomagnetite, ilmenite as the main metalliferous mineral that is mineral aggregate, select the Pre-sorting concentrate, low-grade ore is risen to middle grade ore deposit, unbalanced-ore is risen to ore deposit in the table, abandon the gangue of productive rate 31.88%～33.20%, reduce significantly the ore amount of follow-up ore grinding, ore dressing processing processing, can effectively realize saving energy and reduce the cost, reduce production costs.As shown in table 1 to the effect of mixing ore deposit fragmentation-Pre-sorting." mixing green ore " in the table 1 is the inside and outside ore deposit of mixing of vanadium titano-magnetite table.
The inside and outside ore deposit Pre-sorting the key technical indexes of mixing of table 1 vanadium titano-magnetite table
The 4th; the Pre-sorting concentrate of finding out according to research has the technological property that the corase grind cobbing is abandoned mine tailing; in the I of Pre-sorting concentrate section corase grind product, can dissociate the gangue of a large amount of granularity-1mm; by a little less than I section corase grind product being carried out magnetic; the magnetic separation of many field intensity of middle magnetic and strong magnetic; further fully reclaim the enrichment titanomagnetite; ilmenite and sulphide ore; obtain the coarse grain bulk concentrate; abandon the coarse grain mine tailing of productive rate 31.31%～37.79%; further reduce significantly follow-up ore grinding; the ore amount that ore dressing processing is processed; can effectively realize saving energy and reduce the cost, reduce production costs.It is as shown in table 2 that the I section is roughly ground the excellent technique index that the magnetic separation process of many field intensity can reach.
Table 2 Pre-sorting concentrate is roughly ground the key technical indexes of many field intensity magnetic separation through the I section
The 5th, II section ore milling product is added adjusting agent, xanthate collectors and foaming agent Flotation of Sulfide Ores, can obtain mixing the sulphur cobalt concentrate of green ore productive rate 1.25%～1.37%, grade Co 0.538%～0.471%.
The 6th, iron selection tailings is carried out high intensity magnetic separation process, by the high intensity magnetic separation titanium, further the enrichment ilmenite obtains the high intensity magnetic separation concentrate, abandons the high intensity magnetic separation mine tailing to this high intensity magnetic separation operation productive rate 40%～45%, reduced significantly flotation and selected the floating inventory of entering of titanium, can reduce significantly and select the titanium cost.
The 7th, show by industrial field, adopt technology of the present invention to sort the inside and outside ore deposit of mixing of table of the poorest red lattice vanadium titano-magnetite of climbing western reserves maximum, not only technical indicator is good, and beneficiation cost is low, can successfully comprehensively reclaim the various Hubeiwans in low-grade ore and the unbalanced-ore, vanadium iron concentrate, ilmenite concentrate and sulphur the cobalt concentrate product, particularly the present invention that has obtained respectively high-quality is suitable on a large scale the industrial production to the comprehensive utilization of the low-grade lean ore of vanadium titano-magnetite and unbalanced-ore.
The specific embodiment
The below mixes the ore deposit as example take what climb ore deposit and unbalanced-ore in the western red lattice vanadium titano-magnetite table, further specifies the specific embodiment of the low-grade lean ore of comprehensive utilization of V-Ti magnetite of the present invention and unbalanced-ore beneficiation method.By the description to the specific embodiment, advantage of the present invention will become clearer and should be readily appreciated that.
In the present invention, the interior ore deposit of table is the lean ore of climbing in the western low grade vanadium titanomagnetite, and the inside and outside ore deposit of mixing of table is to climb the minimum ore of TFe grade in the inside and outside mixing of the western vanadium titano-magnetite table ore deposit, and the inside and outside proportioning of mixing the ore deposit of table is: unbalanced-ore ore deposit amount: show Nei Kuang ore deposit amount 〉=1.Distribution is deposited in inside and outside main chemical compositions, the essential mineral content that mixes the ore deposit of ore deposit, unbalanced-ore and table in its table, the tax that mixes ore deposit major metal component, sees Table respectively 3, shown in table 4 and the table 5.
Table 3 is climbed western red lattice v-ti magnetite green ore main chemical compositions (%)
| The ore title | TFe | TiO 2 | V 2O 5 | Co | Ni | SiO 2 | Al 2O 3 | CaO | MgO | S |
| Ore deposit in the table | 24.63 | 11.46 | 0.240 | 0.017 | 0.041 | 27.66 | 7.72 | 8.25 | 7.67 | 0.76 |
| Unbalanced-ore | 17.83 | 8.87 | 0.155 | 0.016 | 0.045 | 32.80 | 9.92 | 10.93 | 8.77 | 0.62 |
| Mix the ore deposit | 21.23 | 10.17 | 0.198 | 0.017 | 0.043 | 30.23 | 8.82 | 9.59 | 8.22 | 0.69 |
Table 4 is climbed ore deposit, unbalanced-ore and mixing green ore essential mineral content (%) in the western red lattice vanadium titano-magnetite table
| Mineral name | Titanomagnetite etc. | Ilmenite | Sulphide ore etc. | Gangue mineral |
| Ore deposit in the table | 27.82 | 15.38 | 1.57 | 55.23 |
| Unbalanced-ore | 12.08 | 14.62 | 1.67 | 71.63 |
| Mix the ore deposit | 19.95 | 15.00 | 1.62 | 63.43 |
Table 5 mixes the tax of ore deposit major metal component and deposits distribution
As shown in Table 5, titanomagnetite mainly is the carrier mineral of iron, vanadium and chromium, secondly is the carrier mineral of titanium.Ilmenite mainly is the carrier mineral of titanium, secondly is the carrier mineral of iron.And iron, titanium, vanadium that gangue mineral distributes are by due to the titanomagnetite of microgranular, the needle-like of iron content, titan silicate and gangue mineral parcel, the ilmenite.
What the present invention solved that aforementioned prior art problem takes is the beneficiation method of the low-grade lean ore of a kind of comprehensive utilization of V-Ti magnetite and unbalanced-ore, the following describes each processing step and operation principle that this beneficiation method is implemented.
At first be fragmentation-magnetic separation Pre-sorting technique, comprise: utilize the interior ore deposit of vanadium titano-magnetite table and unbalanced-ore to be the each other characteristics of stratiform output, ore deposit and unbalanced-ore in the vanadium titano-magnetite table are carried out mixed mining, with the mixing green ore of extraction be transported into Pre-sorting factory carry out coarse crushing, in broken, grinding and sieving closed circuit crushing, screen-aperture is 10mm, undersize is the material of particle diameter-10mm, and on the sieve+the nugget material of 10mm particle diameter return carry out again in small, broken bits.In the crushed product of particle diameter-10mm, a large amount of thick gangue mineral aggregates are dissociated, are the valuable mineral in the sorting enriching and recovering crushed product, abandon as early as possible a large amount of gangues that dissociated, and material conditions are provided.Then adopt weak magnetic or middle magnetic magnetic separation to roughly select to crushed product, select take titanomagnetite as main mineral aggregate, then the rougher tailings of weak or middle magnetic magnetic separation carried out high intensity magnetic separation, select take ilmenite as main mineral aggregate, and the Pre-sorting mine tailing that high intensity magnetic separation is remaining is sent into waste-rock yard.The mineral aggregate take ilmenite as the master that high intensity magnetic separation is selected and front are referred to as the Pre-sorting concentrate through what weak or middle magnetic magnetic separation was selected together take titanomagnetite as main mineral aggregate, abandon productive rate 〉=31.88% Pre-sorting mine tailing, realize that crushed product wet type or dry type Pre-sorting abandon mine tailing.Specifically, longer in rainy season, the south that rainfall is more, namely adopt the technology that magnetic is roughly selected and strong magnetic is scanned a little less than the wet type cartridge type permanent magnetism to carry out Pre-sorting to water content greater than 3% crushed product, or adopt the technology that magnetic is roughly selected and strong magnetic is scanned in the wet type cartridge type permanent magnetism to carry out Pre-sorting, and in the north of drought, namely adopt the technology that the weak magnetic of dry type cartridge type permanent magnetism is roughly selected and strong magnetic is scanned to carry out Pre-sorting to the crushed product of water content＜3%, or adopt the technology that magnetic is roughly selected and strong magnetic is scanned in the dry type cartridge type permanent magnetism to carry out Pre-sorting, fully reclaim with titanomagnetite, ilmenite is the main metalliferous mineral that is mineral aggregate, selects the Pre-sorting concentrate.What obtained by fragmentation of the present invention-Pre-sorting technique is the fully comprehensive mineral aggregate that reclaims titanomagnetite, ilmenite and cobalt Ni sulphide mine in low-grade ore, the unbalanced-ore mixing ore deposit.
It then is I section corase grind-magnetic separation process, adopt the closed circuit technique of ore grinding-sieve classification to carry out I section corase grind ore grinding to the Pre-sorting concentrate, be milled to granularity-1mm 100%, the coarse grain gangue mineral is fully dissociated, be further abundant enriching and recovering titanomagnetite, ilmenite and sulphide ore, abandon a large amount of-1mm coarse grain gangue mineral, provide material base.Subsequently; I section corase grind product is carried out the wet type permanent magnet low intensity magnetic separation; the low intensity magnetic separation mine tailing is carried out magnetic separation in the wet type permanent magnet; the centering magnetic tailing carries out high intensity magnetic separation; it is the coarse grain bulk concentrate together that low intensity magnetic separation concentrate, middle magnetic concentrate and high intensity magnetic separation concentrate merge; the coarse grain bulk concentrate that the gangue mineral that this coarse grain bulk concentrate is titanomagnetite, ilmenite, sulphide ore and adhesion thereof forms; abandon the coarse grain mine tailing of productive rate 31.31%～37.79%; send into Tailings Dam; realize abandoning for the second time mine tailing, reduced significantly the ore amount of back II section fine grinding technology processing.
Then be II section ore grinding-sorting process, described coarse grain bulk concentrate is carried out the closed circuit fine grinding ore grinding of II section ore grinding-fine screening classification, be milled to granularity-0.15mm 100%, obtain II section ore milling product.Under the granularity of-0.15mm 100%, titanomagnetite, ilmenite, sulfide and gangue mineral had both obtained fully dissociating, and did not produce mineral again overground simultaneously.Then, II section ore milling product is added adjusting agent, xanthate collectors and foaming agent Flotation of Sulfide Ores, obtain being 1.25%～1.37% to mixing the green ore productive rate, the nickeliferous sulphur cobalt concentrate of grade Co 0.538%～0.471%, Flotation of Sulfide Ores has two-layer meaning herein, the one, in order to reduce the sulfur content in subsequent job product iron concentrate, the ilmenite concentrate, reach its product quality requirement; The 2nd, for the comprehensive Hubeiwans such as cobalt nickel that reclaim in the vanadium titano-magnetite sulphide ore.Then, more floating sulphur mine tailing is carried out weak magnetic separation iron, obtain being 16.49%～16.82% to mixing the green ore productive rate, grade TFe58.75%～58.21%, V
2O
50.716%～0.687%, TiO
29.23%～9.42% fine quality iron concentrate.Subsequently, the weak magnetic separation iron mine tailing is carried out the high intensity magnetic separation titanium, by the high intensity magnetic separation titanium, further enrichment ilmenite, obtain the high intensity magnetic separation concentrate, the high intensity magnetic separation mine tailing that to abandon this high intensity magnetic separation operation productive rate be 40%-45% has reduced the floating inventory that enters of follow-up flotation titanium operation significantly.At last, the high intensity magnetic separation concentrate is added adjusting agent, sodium soap and supplementary catching agent flotation ilmenite, obtain being 12.15%～12.39% to mixing the green ore productive rate, grade TiO
248.61%～48.37%, the high-grade ilmenite concentrate of TFe32.27%～32.63%, the flotation Tailing of titanium separation is sent into Tailings Dam.The present invention just obtains sulphur cobalt concentrate, iron ore concentrate and ilmenite concentrate product from II section ore milling product successively sorting like this.
Below 3 embodiment respectively and south that rainfall more long for rainy season, the north of drought illustrates the specific embodiment that is suitable for implementing of the present invention throughout the year.
Embodiment 1 (be applicable to rainy season long, the more south of rainfall)
Split the interior ore deposit of table of extraction and the ore deposit of mixing of unbalanced-ore, adopt three sections crushing process that fragmentation-screening is closed circuit, be crushed to granularity-10mm 100%; Adopt the technology that magnetic is roughly selected and strong magnetic is scanned a little less than the wet type cartridge type permanent magnetism to carry out Pre-sorting to water content greater than 3% crushed product, fully enriching and recovering is take titanomagnetite, ilmenite as the main metalliferous mineral that is mineral aggregate, obtain the Pre-sorting concentrate of productive rate 68.12%, abandon the Pre-sorting mine tailing of productive rate 31.88%; Adopt the closed circuit flow process of ore grinding-sieve classification to carry out I section rod milling ore grinding to the Pre-sorting concentrate, be milled to granularity-1mm 100%, I section ore milling product is carried out the wet type permanent magnet low intensity magnetic separation, the low intensity magnetic separation mine tailing is carried out magnetic separation in the wet type permanent magnet, the centering magnetic tailing carries out high intensity magnetic separation, obtain relative Pre-sorting concentrate yield and be 68.69% coarse grain bulk concentrate, abandon the coarse grain mine tailing of productive rate 31.31%; Carry out the closed circuit fine grinding ore grinding of II section ore grinding-fine screening classification to merging the coarse grain bulk concentrate that consists of together by low intensity magnetic separation concentrate, middle magnetic concentrate and high intensity magnetic separation concentrate, be milled to granularity-0.15mm 100%, II section ore milling product is added adjusting agent, xanthate collectors and foaming agent Flotation of Sulfide Ores, obtaining mixing the green ore productive rate is 1.37%, the sulphur cobalt concentrate of grade Co 0.538%; Floating sulphur mine tailing is carried out weak magnetic separation iron, and obtaining mixing the green ore productive rate is 16.82%, grade TFe58.21%, V
2O
50.687%, TiO
29.42% fine quality iron concentrate.Then, iron selection tailings is carried out the high intensity magnetic separation titanium, abandon the high intensity magnetic separation mine tailing of relative high intensity magnetic separation operation productive rate 45%, further the enrichment ilmenite obtains the high intensity magnetic separation concentrate; The high intensity magnetic separation concentrate is added adjusting agent, sodium soap and supplementary catching agent flotation ilmenite, and obtaining mixing the green ore productive rate is 12.39%, grade TiO
248.37%, the high-grade ilmenite concentrate of TFe32.63%.
Embodiment 2 (be applicable to rainy season long, the more south of rainfall)
Split the mixing ore deposit of the interior ore deposit of the next table of extraction and unbalanced-ore, adopt three sections crushing process that fragmentation-screening is closed circuit, be crushed to granularity-10mm 100%, water content is carried out Pre-sorting greater than the technology that magnetic is roughly selected and strong magnetic is scanned in 3% the crushed product employing wet type cartridge type permanent magnetism, obtain the Pre-sorting concentrate of productive rate 66.80%, abandon the mine tailing of productive rate 33.20%; Adopt the closed circuit flow process of ore grinding-sieve classification to carry out I section corase grind ore grinding to the Pre-sorting concentrate, be milled to granularity-1mm100%, product to I section corase grind carries out the wet type permanent magnet low intensity magnetic separation, the low intensity magnetic separation mine tailing is carried out magnetic separation in the wet type permanent magnet, the centering magnetic tailing carries out high intensity magnetic separation, consist of together the coarse grain bulk concentrate by low intensity magnetic separation concentrate, middle magnetic concentrate and the merging of high intensity magnetic separation concentrate, obtain the coarse grain bulk concentrate of relative Pre-sorting concentrate yield 66.37%, abandon the coarse grain gangue of productive rate 33.63%; The coarse grain bulk concentrate is carried out the closed circuit fine grinding ore grinding of II section ore grinding-fine screening classification, be milled to granularity-0.15mm 100%, II section ore milling product is added adjusting agent, xanthate collectors and foaming agent Flotation of Sulfide Ores, obtaining mixing the green ore productive rate is 1.31%, the sulphur cobalt concentrate of grade Co 0.513%; Floating sulphur mine tailing is carried out weak magnetic separation iron, and obtaining mixing the green ore productive rate is 16.49%, grade TFe58.75%, V
2O
50.0.716%, TiO
29.23% fine quality iron concentrate.Then, iron selection tailings is carried out the high intensity magnetic separation titanium, further enrichment ilmenite, obtain the high intensity magnetic separation concentrate, abandon the high intensity magnetic separation mine tailing of relative high intensity magnetic separation operation productive rate 42.78%, the high intensity magnetic separation concentrate is added adjusting agent, sodium soap and supplementary catching agent flotation ilmenite, and obtaining mixing the green ore productive rate is 12.15%, grade TiO
248.61%, the high-grade ilmenite concentrate of TFe32.27%.
Embodiment 3 (being applicable to the throughout the year north of drought, the north)
Split the mixing ore deposit of the interior ore deposit of the next table of extraction and unbalanced-ore, adopt three sections crushing process that fragmentation-screening is closed circuit, be crushed to granularity-10mm 100%, crushed product water content＜3%, adopt the technology that magnetic is roughly selected and strong magnetic is scanned a little less than the dry type cartridge type to carry out Pre-sorting to crushed product, obtain the Pre-sorting concentrate of productive rate 68.12%, abandon the mine tailing of productive rate 31.88%; Adopt the closed circuit flow process of ore grinding-sieve classification to carry out I section corase grind ore grinding to the Pre-sorting concentrate, be milled to granularity-1mm 100%, product to I section corase grind carries out the wet type permanent magnet low intensity magnetic separation, the low intensity magnetic separation mine tailing is carried out magnetic separation in the wet type permanent magnet, the centering magnetic tailing carries out high intensity magnetic separation, consist of together the coarse grain bulk concentrate by low intensity magnetic separation concentrate, middle magnetic concentrate and the merging of high intensity magnetic separation concentrate, obtain relative Pre-sorting concentrate yield and be 65.32% coarse grain bulk concentrate, abandon the coarse grain mine tailing of relative Pre-sorting concentrate yield 34.68%; The coarse grain bulk concentrate is carried out the closed circuit fine grinding ore grinding of II section ore grinding-fine screening classification, be milled to granularity-0.15mm 100%, II section ore milling product is added adjusting agent, xanthate collectors and foaming agent Flotation of Sulfide Ores, obtaining mixing the green ore productive rate is 1.25%, the sulphur cobalt concentrate of grade Co 0.471%; Floating sulphur mine tailing is carried out weak magnetic separation iron, and obtaining mixing the green ore productive rate is 16.52%, grade TFe58.45%, V
2O
60.683%, TiO
29.33% fine quality iron concentrate.Then, iron selection tailings is carried out the high intensity magnetic separation titanium, abandon the high intensity magnetic separation mine tailing of relative high intensity magnetic separation operation productive rate 44.50% and send into Tailings Dam, obtain the high intensity magnetic separation concentrate, then the high intensity magnetic separation concentrate is added adjusting agent, sodium soap and supplementary catching agent flotation ilmenite, obtaining mixing the green ore productive rate is 12.17%, grade TiO
248.41%, the high-grade ilmenite concentrate of TFe32.35%, the flotation Tailing of titanium separation is sent into Tailings Dam.
Claims (7)
1. the beneficiation method of the low-grade lean ore of comprehensive utilization of V-Ti magnetite and unbalanced-ore, the method comprises following processing step:
(1) ore deposit and unbalanced-ore in the vanadium titano-magnetite table are carried out mixed mining, adopt three sections closed circuit crushing process of fragmentation-screening to be crushed to granularity-10mm 100% in the mixing ore deposit of ore deposit and unbalanced-ore in the exploitation table out;
(2) to the crushed product of water content＞3% adopt the weak magnetic of wet type cartridge type permanent magnetism roughly select or wet type cartridge type permanent magnetism in magnetic roughly select, adopt wet type cartridge type permanent magnetic strong magnetic to scan to rougher tailings, perhaps to the crushed product of water content＜3% adopt the weak magnetic of dry type cartridge type permanent magnetism roughly select or dry type cartridge type permanent magnetism in magnetic roughly select, adopt dry type cartridge type permanent magnetic strong magnetic to scan to rougher tailings, obtain abandoning the Pre-sorting mine tailing of productive rate 〉=31.88% take titanomagnetite as main roughly selecting mineral and merge the Pre-sorting concentrate that consists of together take ilmenite as the main mineral of scanning;
(3) adopt ore grinding-sieve classification closed circuit grinding technique, the Pre-sorting concentrate is carried out I section corase grind ore grinding;
(4) I section corase grind product is carried out the wet type permanent magnet low intensity magnetic separation, the low intensity magnetic separation mine tailing is carried out magnetic separation in the wet type permanent magnet, the centering magnetic tailing carries out high intensity magnetic separation, obtain merging the coarse grain bulk concentrate that consists of together by low intensity magnetic separation concentrate, middle magnetic concentrate and high intensity magnetic separation concentrate, abandon relative Pre-sorting concentrate yield and be 31.31%～37.79% coarse grain mine tailing;
(5) adopt the closed circuit technique of fine grinding dusting cover that the coarse grain bulk concentrate is carried out II section ore grinding, and sorting obtain respectively nickel sulphur cobalt concentrate, vanadium iron concentrate and ilmenite concentrate product to II section ore milling product.
2. beneficiation method according to claim 1 is characterized in that, wherein the granularity of the described I section corase grind of step (3) product is-1mm 100%.
3. beneficiation method according to claim 1 is characterized in that, wherein the granularity of the described II section of step (5) ore milling product is-0.15mm 100%.
4. beneficiation method according to claim 1, it is characterized in that, wherein the described sorting of step (5) is first II section ore milling product to be added adjusting agent, xanthate collectors and foaming agent Flotation of Sulfide Ores, obtains to be 1.25%～1.37% to mixing the green ore productive rate, the nickel sulphur cobalt concentrate of grade Co 0.538%～0.471%.
5. beneficiation method according to claim 4 is characterized in that, then floating sulphur mine tailing is carried out low intensity magnetic separation and selects iron, obtains being 16.49%～16.82% to mixing the green ore productive rate, grade TFe58.75%～58.21%, V
2O
50.716%～0.687% vanadium iron concentrate.
6. beneficiation method according to claim 5 is characterized in that, then iron selection tailings is carried out the high intensity magnetic separation titanium, obtains the high intensity magnetic separation concentrate, abandons the high intensity magnetic separation mine tailing of high intensity magnetic separation operation productive rate 40%～45%.
7. beneficiation method according to claim 6 is characterized in that, then described high intensity magnetic separation concentrate is added adjusting agent, sodium soap and supplementary catching agent flotation ilmenite, obtains being 12.15%～12.39% to mixing the green ore productive rate, grade TiO
248.61%～48.37%, the ilmenite concentrate of TFe32.27%～32.63% abandons flotation titanium mine tailing.
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| CN102671761B (en) * | 2012-05-14 | 2015-02-11 | 哈密合盛源矿业有限责任公司 | Dry grinding and dry concentration method for magnetic minerals |
| CN103041912B (en) * | 2012-12-11 | 2014-10-08 | 攀钢集团矿业有限公司 | Beneficiation method of low-grade ilmenite |
| CN105107616B (en) * | 2015-09-22 | 2017-09-12 | 赣州金环磁选设备有限公司 | A kind of method for effectively improving low-grade vanadium titano-magnetite beneficiating efficiency |
| CN105107635A (en) * | 2015-09-29 | 2015-12-02 | 四川安宁铁钛股份有限公司 | Method for utilizing sulfur-containing vanadium-titanium-iron concentrates to produce iron ore concentrate and cobalt-pyrite concentrate |
| CN105921261B (en) * | 2016-07-06 | 2018-12-04 | 陕西冶金设计研究院有限公司 | A kind of super low-grade vanadium titano-magnetite utilization system and its utilize method |
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| CN111841881A (en) * | 2020-07-29 | 2020-10-30 | 攀钢集团矿业有限公司 | Method for recovering titanomagnetite in beneficiation process |
| CN112295727A (en) * | 2020-09-21 | 2021-02-02 | 攀枝花合润再生资源综合利用有限公司 | Method for extracting titanium concentrate and iron concentrate by using ilmenite tailings |
| CN114570524A (en) * | 2022-03-21 | 2022-06-03 | 攀枝花市先力矿业有限公司 | Comprehensive utilization method for low-grade vanadium titano-magnetite pre-concentration waste disposal |
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| CN101564707B (en) * | 2009-05-15 | 2010-11-10 | 四川安宁铁钛股份有限公司 | Vanadium titano-magnetite screen method |
| CN101564710B (en) * | 2009-05-31 | 2013-03-20 | 四川安宁铁钛股份有限公司 | Vanadium titano-magnetite flotation method |
| CN201644207U (en) * | 2010-01-22 | 2010-11-24 | 重庆钢铁(集团)有限责任公司 | Magnetizing, discarding tailing and preselecting device of vanadium titano-magnetite low-grade submarginal ore |
| CN101791588B (en) * | 2010-03-05 | 2011-09-14 | 重钢西昌矿业有限公司 | Sorting method of low grade vanadium titano-magnetite |
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