CN105080705A - Method for preparing various minerals from tantalum-niobium ores through combined magnetic separation - Google Patents
Method for preparing various minerals from tantalum-niobium ores through combined magnetic separation Download PDFInfo
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Abstract
The invention provides a method for preparing various minerals from tantalum-niobium ores through combined magnetic separation. Raw tantalum-niobium ores and waste ores are used as raw materials and are smashed and screened, a high gradient magnetic separation method and a medium magnetic separation method are combined, iron slags are removed through permanent magnetic separation, and smashed tantalum-niobium ore powde is obtained. The method includes the following steps that (1) the smashed tantalum-niobium ore powder is subjected to roughing through a medium magnetic separation machine and a high gradient magnetic separation machine; (2) ore pulp is separated to be non-magnetic ore pulp and magnetic ore pulp; (3) coarse tantalum-niobium ore powder is subjected to channel separation; and (4) separated materials are subjected to flotation to obtain lepidolite ore powder and lithium feldspar ore powder. Tantalum-niobium concentrate, the lithium feldspar ore powder, the lepidolite ore fines and the like are prepared in a grading manner, so that the novel method can separate various raw mineral materials through combined magnetic separation and has remarkable economic and technical benefits, treatment on three wastes is little, and the rate of recycling the tantalum-niobium concentrate from waste tantalum-niobium ores is high.
Description
technical field:
The present invention relates to a kind of method reclaiming tantalum niobium concentrate stone and multi mineral material from tantalum niobium raw ore and ettle, particularly a kind of method utilizing associating magnetic separation to prepare multi mineral from tantalum niobium concentrate.
background technology:
Tantalum and niobium are two kinds of important yttrium materials, there is important strategy and economic worth, along with expanding economy, various electronic product consumption sustainable growth, make the significantly growth of tantalum, niobium industrial water requirement, exacerbate the tensity of tantalum, niobium minerals product resource provisioning.The columite-tantalite ore rich reserves of China, wherein tantalum accounts for 20% of world saving, and niobium accounts for 15% of the world, but China tantalum niobium minerals grade is low, many metals intergrowth mineral bed is many, complicated components, tantalum niobium concentrate thing disseminated grain size is thin, and recovery rate in ore-dressing is lower, and adopt existing reselecting method to reclaim the tantalum niobium concentrate thing of fine mud level-0.037mm, recovery difficult is large, and the rate of recovery is low, and waste is serious.Also there are many available mineral resources in tantalum niobium barren rock simultaneously after the exploitation of tantalum niobium concentrate thing is reclaimed, be not recycled and made refuse loss as lithium feldspar and lepidolite powder etc., can not get reclaiming.
Be not also a lot of the tantalum pentoxide of these trace, niobium pentaoxide extraction and isolation method out in tantalum niobium concentrate barren rock, existing method extraction and application rate is low.As reached 7km2 at tantalum niobium concentrate district, Yichuan area, proved reserves, tantalum 1.85 tons, niobium 1.49 tons, lithium 75.22 ten thousand tons, rubidium 40.17 ten thousand tons, caesium 5.43 ten thousand tons, belongs to albite, lepidolite granite type containing the large-scale ore body of the multiple rare metal such as tantalum, niobium, lithium, rubidium, Ta-Nb industry reserves account for that the whole nation verifies 44.3%, the exploitation of this ore deposit is annual to produce tantalum niobium concentrate country rock, horsestone, the lean ore of about 400,000 tons and peels off barren rock etc., and these barren rocks claim " black-spot ores " in local mining area.These barren rocks are except minority is used for filling out hole, paves the way, and majority is not fully utilized.Now cumulative number ten million ton, Ta in these above-mentioned tantalum niobium concentrate barren rocks
2o
5<0.01%, Nb
2o
5<0.005%, do not reach production-grade, always as abandoned mine, barren rock process, waste resource, not only affect the exploitation of other high-quality mineral reserve, and take mountain region, and serious harm is brought to surrounding enviroment, the security of the lives and property of the periphery people is constituted a threat to, from tantalum niobium concentrate barren rock, reclaims tantalum-niobium concentrate, lepidolite powder and lithium feldspar powder can realize turning waste into wealth.
Chinese invention patent publication number is CN102764691A patent of invention, discloses a kind of high density non-metal sorting mineral method.The method comprises the steps: to carry out dense medium separation to raw ore; De-mediated is carried out to concentrate product; Chats and product from failing are by sieve bend, and sieve and top gradely carry out de-mediated, sieve low-grades enter shunting; On sieve, chunk products is concentrate and tailings, and the lower rare medium of sieve enters mixing tank, and the lower qualified medium of sieve obtains concentrate muddy water and mine tailing muddy water through a magnetic separation part, and remainder enters mixing tank; High density non-metal sorting mineral method system of the present invention is simple, investment is less, by chats and mine tailing in while after sieve bend, carry out shunting and de-mediated simplifies technological process, improve the ratio of system middle and high concentration product, improve thickening efficiency.But it is extensive, single to reclaim product, and utilizes limited for the raw material of ettle resource.Cause the comprehensive regulation and not high to the utilization rate of ore resource.
Current domestic published document and patent adopt the process of " gravity treatment-flotation-separation by shaking table " or " magnetic separation-flotation-gravity treatment " to reclaim tantalum-niobium concentrate, and the rate of recovery of tantalum-niobium concentrate is generally about 80%, and from tantalum niobium tcrude ore and tantalum niobium barren rock, extract tantalum-niobium concentrate and other multi mineral material such as methods such as lithium feldspar and lithium Yun Fen there is not been reported simultaneously; From tantalum niobium raw ore and barren rock, adopt process integration to select the principle of tantalum-niobium concentrate and multi mineral raw material thereof and technical study also few especially.
In tantalum niobium tcrude ore and barren rock, how to extract high-quality micro-tantalum-niobium concentrate and multiple other lithium feldspar powder and lepidolite powder etc. are the reality need that will face in current mining process simultaneously, the several hundred million tons of tantalum niobium concentrate barren rock solid waste how making China produce turn waste into wealth, and have good economic implications and environment protection significance.
Therefore, in the urgent need to developing the new method reclaiming tantalum niobium and other multiple ore resources from tantalum niobium tcrude ore and barren rock of a kind of economy, efficient, environmental protection.
summary of the invention:
The invention provides a kind of method utilizing associating magnetic separation to prepare multi mineral from tantalum niobium concentrate, its simultaneously with tantalum niobium tcrude ore and ettle for raw material, magnetic magnetic selection method in broken, screening utilize high-gradient magnetic separation to combine, grading extraction prepares tantalum-niobium concentrate, lithium feldspar powder and lepidolite fine ore etc., realize the new method that associating magnetic separation is separated multi mineral raw material, its economic technology benefit is obvious, and three-protection design is little, reclaims the tantalum-niobium concentrate rate of recovery high from tantalum niobium ettle.
A kind of method utilizing associating magnetic separation to prepare multi mineral from tantalum niobium concentrate of the present invention, adopt the method for magnetic magnetic separation in high-gradient magnetic separation associating, with tantalum niobium raw ore and/or tantalum niobium ettle for raw material, through fragmentation, screening, then tantalum niobium muck powder is obtained through permanent-magnet concentration iron dross removing, as follows: 1) by tantalum niobium muck powder with in magnetic magnetic separation and high gradient magnetic separator carry out roughly selecting removing weak magnetism mineral and obtain ore pulp, 2) ore pulp is separated into non magnetic ore pulp and magnetic ore pulp, obtain high-grade containing the rough powder of tantalum niobium more respectively with spiral classifier gravity treatment, 3) sorting of cloth ditch will be carried out containing the rough powder of tantalum niobium obtain tantalum-niobium concentrate and point to select materials, 4) will divide to select materials and obtain lepidolite breeze and lithium feldspar powder breeze through flotation, lepidolite breeze and lithium feldspar powder breeze are carried out filtration sorting respectively, obtain lepidolite concentrate and lithium feldspar concentrate powder.
A kind of described method utilizing associating magnetic separation to prepare multi mineral from tantalum niobium concentrate, magnetic pole surfaces magnetic field intensity H=6000-26000A/m, the specific susceptibility X of tcrude ore and barren rock mineral grain when permanent-magnet concentration described in it controls magnetic separation
0>38 × 10-6cm
3/ g is ferromagnetism iron mineral.
A kind of described method utilizing associating magnetic separation to prepare multi mineral from tantalum niobium concentrate, they are 4 years old) flotation described in step preferably adopts hydraulic cyclone sorting, selects FX150 type hydrocyclone or FX250 type hydrocyclone; The technological parameter of the FX150 type hydrocyclone described in control is: diameter 150mm, feed pressure 0.08-0.3MPa, disposal ability 14-35m3/h, partition size 20-74 μm; The technological parameter controlling described FX250 type hydrocyclone is: diameter 250mm, feed pressure 0.06-0.3MPa, disposal ability 40-80m3/h, partition size 40-100 μm.
Method of the present invention, control selected after lepidolite concentrate composition be: Li
2o>=4.8wt%, K
2o+Na
2o>=8.5wt%, TiO
2+ Fe
2o
3≤ 0.15wt%, and lepidolite concentrate rate of recovery >85wt%, containing Li
2o grade reaches more than 4.8wt%.
Process of the present invention is simple, and beneficiation cost is low, not only can carry out extraction to tantalum niobium tcrude ore and sub-elect multi mineral material, can also enter sorting extract tantalum-niobium concentrate and lepidolite concentrate, lithium feldspar concentrate powder etc. to rejected ore; Solve rejected ore and serious harm is brought to surrounding enviroment, and the security of the lives and property of the periphery people is constituted a threat to problem, realize from tcrude ore and barren rock, extract the micro-tantalum-niobium concentrate of high-quality and the method for other multi mineral such as lithium feldspar powder and lepidolite fine ore multiple, tantalum-niobium concentrate and the lepidolite concentrate rate of recovery high, reach more than 85%, the several hundred million tons of tantalum niobium concentrate barren rock solid waste that China is produced turn waste into wealth, and have the economic and social benefit that tool is large.
detailed description of the invention:below in conjunction with detailed description of the invention, the present invention is further described in detail.
Embodiment of the present invention is for raw material with tantalum niobium tcrude ore and tantalum niobium ettle, adopt the method for magnetic magnetic separation in high-gradient magnetic separation associating, with tantalum niobium concentrate and/or tantalum niobium ettle for raw material, through fragmentation, screening, in order to improve the extraction efficiency of separation, material ball mill device after screening carries out ball milling activation, general ball milling activation number picks up hour, about making tantalum niobium concentrate material be milled to 200 orders, then tantalum niobium muck powder is obtained through permanent-magnet concentration iron dross removing, magnetic pole surfaces magnetic field intensity H=6000-26000A/m during permanent-magnet concentration control magnetic separation, the specific susceptibility X of tcrude ore and barren rock mineral grain
0>38 × 10-6cm
3/ g is ferromagnetism iron mineral.Like this can be cleaner except iron mineral; And then carry out sorting as follows successively:
1) by tantalum niobium muck powder with in magnetic magnetic separation and high gradient magnetic separator carry out roughly selecting removing weak magnetism mineral and obtain ore pulp, the magnetic fluid that it uses in the process of magnetic separation adopts paramagnetic salt solution Mn (NO
3)
2, controlling its real density is 1400-1600kg/m3, and volume susceptibility is 8 × 10-7-8 × 10-8, and apparent density is 11000-12000kg/m3.Consumption is the 20-30% of mass percent.The magnetic pole surfaces magnetic field intensity H=6000-26000A/m of described permanent magnetic separator, the specific susceptibility X of barren rock mineral grain
0>38 × 10-6cm
3/ g is ferromagnetism iron mineral.The magnetic pole surfaces magnetic field intensity H≤1700A/m of described high gradient magnetic separator, the specific susceptibility X of barren rock mineral grain
0=(0.19-7.5) × 10-6cm
3/ g is weak magnetism matter mineral;
2) ore pulp being separated into non magnetic ore pulp and magnetic ore pulp, then obtaining with spiral classifier gravity treatment high-grade containing the rough powder of tantalum niobium respectively, existing spiral point method and spiral classifier can being used to carry out gravity treatment, as used the method for spiral chute;
3) sorting of cloth ditch will be carried out containing the rough powder of tantalum niobium obtain tantalum-niobium concentrate powder and point to select materials, during the sorting of cloth ditch, ore pulp is entered into the cloth ditch sorting stage, activator nitrate can be added when the sorting of cloth ditch, the amount added is 80-100g/t ore pulp, described nitrate is preferably magnesium nitrate, can repeat above-mentioned cloth ditch and divide selection operation to sub-elect tantalum-niobium concentrate in assorting room;
4) will divide to select materials and obtain lepidolite breeze and lithium feldspar powder through flotation, described flotation adopts hydraulic cyclone sorting process normally to use FX150 type hydrocyclone or FX250 type hydrocyclone; Described FX150 type hydrocyclone main technologic parameters is: diameter 150mm, feed pressure 0.08-0.3MPa, disposal ability 14-35m3/h, partition size 20-74 μm; Described FX250 type hydrocyclone main technologic parameters is: diameter 250mm, feed pressure 0.06-0.3MPa, disposal ability 40-80m3/h, partition size 40-100 μm.Lepidolite breeze and lithium feldspar powder breeze are carried out filtration sorting respectively, obtains lepidolite fine ore and lithium feldspar concentrate powder.
Adopt the lepidolite concentrate that separates of said method after testing its each primary chemical composition reach as following table content (wt%), table 1:
| Li 2O | K 2O | Na 2O | AL 2O 3 | SiO 2 | Fe 2O 3 | Rb 2O | Cs 2O |
| 5.6 | 10.76 | 0.59 | 23.80 | 51.74 | 0.36 | 1.74 | 0.35 |
Illustrate: each Main chemical component content as can be seen from Table 1 in lepidolite fine ore is all higher, the relevant requirements that lepidolite extracts raw material use can be reached.
Adopt the lithium feldspar concentrate powder that the inventive method is prepared, reach the certain content of lithia of rower requirement and potassium oxide, sodium oxide content is high and ilmenite ores content is low high-quality containing the requirement of lithium feldspar breeze, and the lithium feldspar concentrate powder rate of recovery is greater than more than 96%, exceedes domestic industry level.
The same tantalum-niobium concentrate rate of recovery reaches more than 88.5%.The main component of tantalum-niobium concentrate: Ta
2o
530.98, Nb
2o
517.94, Fe
2o
30.69, TiO
20.13, Al
2o
343.62, SiO
29.80, all reach rower requirement.
embodiment 1,
The present embodiment 1 mainly with tantalum niobium barren rock ore deposit for primary raw material extracts, the tantalum niobium raw ore building stones that simultaneously also can participate in part are raw material, get the barren rock raw material 20 tons of certain tantalum niobium concentrate, following (wt%): the SiO of its main chemical compositions
273.85-74.3, Al
2o
315.80, K
2o, 3.69, Na
2o4.28, CaO0.19, MgO0.07, Fe
2o
30.988, TiO
20.013, Li
2o1.062, Ta
2o
50.0098, Nb
2o
50.0056.The tantalum niobium raw ore building stones simultaneously adding part account for about 10% of tantalum niobium concentrate barren rock raw material, each to change into point and each constituent content mainly in tantalum niobium raw ore building stones, the data detected by the tantalum niobium tcrude ore produced of existing Feld Spar in Yichun Guimaraesite Mine; By above-mentioned tantalum niobium concentrate barren rock by jaw crusher coarse crushing, in broken, in small, broken bits after, enter after ball mill ball milling number picks up hour, continue into ball mill ball milling, permanent magnetic separator is entered together with for the classification material about 220 orders after levigate, iron mineral such as ferromagnetism such as removing magnetic iron ore, magnetic iron ore etc., then carry out sorting by above-mentioned method and be prepared into 27.86kg tantalum-niobium concentrate, the tantalum-niobium concentrate rate of recovery reaches 87.8%.The main component of tantalum-niobium concentrate: Ta
2o
529.98, Nb
2o
515.91, Fe
2o
30.59, TiO
20.10, Al
2o
343.62, SiO
29.80; Tantalum-niobium concentrate concentration ratio reaches 15.25.The lepidolite fine ore rate of recovery reaches 85.4%, and the Main Ingredients and Appearance of lepidolite fine ore reaches the quality requirement of as above table 1; More than 96.0% is reached containing the lithium feldspar concentrate powder rate of recovery.Nearly 2 tons, it is containing its main component: Li
2o0.9-1.21%, K
2o4.83, K
2o+Na
2o6.5-9.3%, Fe
2o
30.08, TiO
20.0102, Al
2o
314.10-15.05%, SiO
268-76.11%, MnO
2≤ 0.1%, reach rower requirement.
embodiment 2.in the present embodiment, except following explanation, all the other are identical with the explanation of embodiment 1;
The raw material that the present embodiment uses is with tantalum niobium raw ore for main component weight accounting about 80%, and tantalum niobium ettle is secondary raw material weight accounting about 20%, and the tantalum-niobium concentrate rate of recovery reaches 89.6%; The lepidolite fine ore rate of recovery reaches 87.2%; More than 96.3% is reached containing the lithium feldspar concentrate powder rate of recovery.
As can be seen from above-mentioned enforcement, use manufacturing technique method of the present invention, the enrichment ratio of tantalum-niobium concentrate is high, and the rate of recovery is also higher, can also reclaim tantalum-niobium concentrate, lepidolite fine ore, containing lithium feldspar concentrate powder etc. simultaneously.
Claims (4)
1. the method utilizing associating magnetic separation to prepare multi mineral from tantalum niobium concentrate, adopt the method for magnetic magnetic separation in high-gradient magnetic separation associating, with tantalum niobium raw ore and/or tantalum niobium ettle for raw material, through fragmentation, screening, then remove ferromagnetism iron mineral through permanent-magnet concentration and obtain tantalum niobium muck powder, it is characterized in that 1) by tantalum niobium muck powder with in magnetic magnetic separation and high gradient magnetic separator carry out roughly selecting removing weak magnetism mineral and obtain ore pulp, 2) ore pulp is separated into non magnetic ore pulp and magnetic ore pulp, obtain high-grade containing the rough powder of tantalum niobium more respectively with spiral classifier gravity treatment, 3) sorting of cloth ditch will be carried out containing the rough powder of tantalum niobium obtain tantalum-niobium concentrate powder and point to select materials, 4) will divide to select materials and obtain lepidolite breeze and lithium feldspar powder breeze through flotation, lepidolite breeze and lithium feldspar powder breeze are carried out filtration sorting respectively, obtain lepidolite fine ore and lithium feldspar concentrate powder.
2. a kind of method utilizing associating magnetic separation to prepare multi mineral from tantalum niobium concentrate according to claim 1, is characterized in that: magnetic pole surfaces magnetic field intensity H=6000-26000A/m, the specific susceptibility X of barren rock mineral grain when described permanent-magnet concentration controls magnetic separation
0>38 × 10-6cm
3/ g is ferromagnetism iron mineral.
3. a kind of method utilizing associating magnetic separation to prepare multi mineral from tantalum niobium concentrate according to claim 1, is characterized in that: 4) flotation described in step adopts hydraulic cyclone sorting, selects FX150 type hydrocyclone or FX250 type hydrocyclone; The technological parameter of the FX150 type hydrocyclone described in control is: diameter 150mm, feed pressure 0.08-0.3MPa, disposal ability 14-35m
3/ h, partition size 20-74 μm; The technological parameter controlling described FX250 type hydrocyclone is: diameter 250mm, feed pressure 0.06-0.3MPa, disposal ability 40-80m
3/ h, partition size 40-100 μm.
4. a kind of method utilizing associating magnetic separation to prepare multi mineral from tantalum niobium concentrate according to claim 1, it is characterized in that control selected after lepidolite concentrate composition be: Li
2o>=4.8wt%, K
2o+Na
2o>=8.5wt%, TiO
2+ Fe
2o
3≤ 0.15wt%, and lepidolite concentrate rate of recovery >85wt%, containing Li
2o grade reaches more than 4.8wt%.
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Cited By (12)
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| CN106423554A (en) * | 2016-12-09 | 2017-02-22 | 江西金辉再生资源股份有限公司 | Method using tailing sand united concentration to prepare potassium-sodium feldspar powder |
| CN106583051A (en) * | 2016-12-23 | 2017-04-26 | 中国地质科学院矿产综合利用研究所 | Method for full-sludge flotation co-enrichment recovery of lithium niobium tantalum multi-metal resources |
| CN106861895A (en) * | 2017-04-20 | 2017-06-20 | 河北铸合集团兴隆县矿业有限公司 | Ta Nb tailings Comprehensive recycle technology and its system |
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| CN109127117A (en) * | 2018-11-01 | 2019-01-04 | 中钢集团马鞍山矿山研究院有限公司 | A kind of beneficiation method of spodumene ore |
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|---|---|---|---|---|
| CN107243406A (en) * | 2016-08-29 | 2017-10-13 | 赣州金环磁选设备有限公司 | A kind of method of the feldspar of niobium containing tantalum tailing resource recycling |
| CN106423554A (en) * | 2016-12-09 | 2017-02-22 | 江西金辉再生资源股份有限公司 | Method using tailing sand united concentration to prepare potassium-sodium feldspar powder |
| CN106378254A (en) * | 2016-12-09 | 2017-02-08 | 江西金辉再生资源股份有限公司 | Method for removing magnetic impurities from tantalum-niobium waste ores by utilizing combined magnetic separation |
| CN106583051A (en) * | 2016-12-23 | 2017-04-26 | 中国地质科学院矿产综合利用研究所 | Method for full-sludge flotation co-enrichment recovery of lithium niobium tantalum multi-metal resources |
| CN106861895A (en) * | 2017-04-20 | 2017-06-20 | 河北铸合集团兴隆县矿业有限公司 | Ta Nb tailings Comprehensive recycle technology and its system |
| WO2019090402A1 (en) * | 2017-11-07 | 2019-05-16 | Amg Mineração S.A. | Ore-dressing process |
| CN109127117A (en) * | 2018-11-01 | 2019-01-04 | 中钢集团马鞍山矿山研究院有限公司 | A kind of beneficiation method of spodumene ore |
| CN109317289A (en) * | 2018-11-14 | 2019-02-12 | 王光领 | Dry sand medium preparation process is used on air dry sand Recognition Applied in Coal Preparation System |
| CN112452532A (en) * | 2020-11-04 | 2021-03-09 | 湖北省地质实验测试中心(国土资源部武汉矿产资源监督检测中心) | Comprehensive recovery process of low-grade fine-grain niobium-tantalum ore |
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| CN112934469B (en) * | 2021-03-01 | 2023-02-07 | 江西矿鑫资源科技有限公司 | Method for separating and recovering heavy metal substances such as tantalum, niobium and the like from lithium ore pulp |
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Application publication date: 20151125 |