CN103301949A - Foaming agent for rare earth ore dressing and normal-temperature ore dressing process of low-grade refractory rare earth ore - Google Patents
Foaming agent for rare earth ore dressing and normal-temperature ore dressing process of low-grade refractory rare earth ore Download PDFInfo
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Abstract
The invention provides a foaming agent for rare earth ore dressing and a low-grade complex and difficult-to-sort rare earth ore dressing process, and particularly relates to a normal-temperature mineral dressing process for low-grade rare earth ore, which has high slime content, fine mineral disseminated particle size, complex mineral composition and REO grade of less than 3%. The invention is characterized in that: the method is characterized in that low-grade rare earth ore with the REO grade of less than 3% is used as a raw material, and a flotation pre-enrichment-wet type strong magnetic separation purification beneficiation method is adopted for the first time within the ore pulp temperature range of 10-25 ℃, so that high-grade and high-recovery rare earth concentrate is obtained. The invention is characterized in that: the flotation pulp has wide temperature application range, no need of heating, short process flow and capability of obviously improving the recovery rate of low-grade complex rare earth ore.
Description
Technical field
The present invention relates to the rare-earth ore ore-dressing technology, particularly a kind of rare-earth ore ore-dressing selects the normal temperature ore-dressing technique of Rare Earth Mine with the low-grade refractory of foaming agent and a kind of REO grade＜3%.
Background technology
Rare earth is described as the treasure-house of new century high-tech and functional material by people, and it is the strategic element of developing high-tech.China's rare earth resources is very abundant, has found out that the rare earth reserves account for 80% of world's gross reserves.Simultaneously, China also is that global rare earth is consumed one of fastest-rising country, estimates that in future the rare earth demand also can constantly increase.Therefore, the ore dressing of rare earth technical research, significant to the development of rare-earth trade.
Foaming agent can reduce the aqueous medium surface tension and form the stable foam layer in froth flotation, widely used in rare-earth ore ore-dressing at present is terpenic oil, cresols and some higher alcohols compound, terpenic oil mainly extracts from the rosin of south China, it is the valuable cargo of medicine and outlet, price is comparatively expensive, resource-constrained is in short supply.In the rare-earth ore ore-dressing field, merely with terpenic oil as foaming agent, expense is higher could to obtain to stablize outstanding foaming effect.Other is also used to some extent as secondary octanol, methyl isobutyl carbinol, triethoxybutane etc., but at present still based on terpenic oil.Two kinds of rare-earth ore ore-dressing formula of foaming agent are provided in the Chinese patent literature, but have formed comparatively complexity, technique waste water has been handled brought a new difficult problem.Providing a kind of new, form the novel rare-earth ore dressing foaming agent simple, that foaming is effective, consumption is few, is that the present invention wishes one of problem that solves.
For rare-earth ore ore-dressing technology itself, the coarse grain rare earth ore generally adopts physical upgrading technologies such as traditional gravity treatment, magnetic separation to reclaim, and the particulate rare earth ore mainly adopts the floatation process of heating to reclaim.Carry out with the Rare Earth Mine exploitation, the selected grade of Rare Earth Mine descends year by year, and milling ore embedding cloth is complicated day by day, sludge content is big, and traditional single ore-dressing technique more and more is difficult to adapt to.
The low-grade refractory of present REO grade＜3% selects the ore-dressing technique of Rare Earth Mine to mainly contain:
(1) gravity treatment-strong magnetic process integration: raw ore REO grade 2.5%, adopt primary grinding, ore grain size-0.074 millimeter accounts for about 80%, adopt the gravity separation technology flow process of slimer one roughing, once purging selection, can obtain rare earth rough concentrate productive rate 4.9%, REO grade 24.8%, the index of the rate of recovery 48.66%.The rare earth rough concentrate is entered strong magnetic separation operation obtain rare earth ore concentrate productive rate 1.7%, REO grade 54.8%, the index of the rate of recovery 37.2%.The low-grade Rare Earth Mine chats cement content of REO grade＜3% is big and sludge middle rare earth distributive law is higher, in the gravity tailings in this process loss excessive, can't obtain the Rare Earth Mine concentrate of qualified grade and the desirable rate of recovery.
(2) floatation process of heating, raw ore REO grade 2.5%, adopt primary grinding, ore grain size-0.074 millimeter accounts for about 80%, adopts flotation desliming in advance, will remove to the part sludge in the ore deposit, to reduce it to the influence of follow-up flotation operation, the sludge productive rate is that 9.8%, REO grade is 2.9%, and the rate of recovery is 11.35% index.Product after the desliming (35 ℃ ~ 50 ℃) and cooperate with the suitable rare earths high-efficient collecting agent under the condition of heating can obtain productive rate and be 1.8%, the REO grade is 45%, the rate of recovery is 32.41% floatation indicators (to raw ore).This technology medicament is expensive, and needs to heat in the flotation operation process, and energy consumption is big, and the Job Operations inclement condition is difficult to control, is difficult to obtain desirable production target.
Existing ore-dressing technique technology is reformed, can be rare earth, the scarce resource of country's saving and new increase preciousness, realize resource to greatest extent, make ecological environment be improved significantly, reach the purpose that realizes environmental benefit, economic benefit and social benefit combination and sustainable development.
Therefore, find a kind ofly need not to heat, process conditions are easy to control, Rare Earth Mine rate of recovery height, novel rare-earth ore deposit method for floating that concentrate grade is good, become another problem that the present invention tries hard to solve.
Summary of the invention
One of purpose of the present invention is at the deficiencies in the prior art, and a kind of rare-earth ore ore-dressing foaming agent is provided, and it is formed simply, foaming is effective, consumption is few, in the Rare Earth Mine floatation process, can form the stable foam layer, improves flotation effect.
Rare-earth ore ore-dressing foaming agent of the present invention is oily by weight (1 ~ 3) by terpenic oil and ether alcohol: 1 mixes.
Ether alcohol oil of the present invention can be: ether alcohol, butyl ether alcohol or glycol ethers, best is ether alcohol.
Terpenic oil and ether alcohol oil is composite for the Rare Earth Mine flotation, can under the less situation of consumption, obtain to bubble preferably effect, froth bed is stable in the floatation process, foam is of moderate size, the froth pulp froth breaking is simple, compared with prior art, this foaming agent not only consumption is few, and compatibility is simple and froth breaking is simple, when improving flotation effect, definite effective has been alleviated the pressure that the three wastes are handled, and has reduced reagent cost.
Two of purpose of the present invention is to provide the rare-earth ore ore-dressing technology of the difficult choosing of a kind of low-grade complex, may further comprise the steps:
(1) gets raw ore, add after the fragmentation that water is sized mixing and ore grinding to the ore weight of granularity-0.074 millimeter accounts for raw ore gross weight 80% ~ 88%; In this step, generally add behind the crushing raw ore water size mixing to ore milling concentration be 50 ~ 60%;
(2) add water in step (1) the gained ore pulp and size mixing to pulp density be 20 ~ 30%, carry out substep then and roughly select operation, obtain roughly selecting concentrate and rougher tailings, described substep is roughly selected operation and is at least twice flotation, during each flotation, in ore pulp, add inhibitor, collecting agent and described rare-earth ore ore-dressing foaming agent successively;
(3) the described concentrate of roughly selecting is carried out that two-stage is selected at least, obtain flotation concentrate and chats at different levels;
(4) the described flotation concentrate that obtains in the step (3) is carried out strong magnetic purification operation, obtain strong magnetic concentrate, it is qualified rare earth ore concentrate product.
Ore-dressing technique of the present invention is applicable to the flotation of the low-grade Rare Earth Mine of REO grade＜3%, and particularly sludge content difficulty big, mineral embedding cloth complexity is selected the flotation of rare earth ore, has effectively enlarged the REO grade scope of selected raw ore, has saved rare-earth ore resource.
Compared with prior art, the beneficiation method that the present invention adopts flotation preenrichment-wet high-intensity magnetic separation to purify first before this by the flotation preenrichment, to 25-35%, to ore pulp in adds inhibitor, collecting agent and foaming agent during flotation with the REO grade of raising Rare Earth Mine.The gained flotation concentrate adopts wet high-intensity magnetic separation (high intensity magnetic separation is used for removing flotation concentrate floatability non magnetic gangue mineral preferably) to purify again.Among the present invention, the kind of used inhibitor and collecting agent and consumption all can be with reference to routine techniques.For example collecting agent can be oleic-acid, phosphonic acids or phosphine lipid, alkyl sulfonic acid class, hydroximic acid, No. 802, No. 804 and H894 etc.; Inhibitor can be dextrin, waterglass, starch and aluminum sulfate etc.
The omnidistance normal-temperature operation of the present invention get final product, need not heat in the operation, and technology is strong to thermal adaptability, and reaction condition is simple and be easy to control, has overcome effectively that temperature influences big deficiency to flotation operation in the common process, and energy consumption is low.On the other hand, technological process of the present invention is short, and in the whole technology, need not the pH value, and operation is further simplified.And under the identical precondition of other processing step, compared with prior art, foaming agent consumption of the present invention reduces by 1/3 at least.
Adopt the present invention to sort the low-grade Rare Earth Mine of REO grade＜3%, can obtain grade and be not less than 56%, the rate of recovery is not less than 50% rare earth ore concentrate.
Preferably, the first step is roughly selected operation in the step (2), and the inhibitor consumption is that 1.0 ~ 2.0kg/t raw ore, collector dosage are 1.0 ~ 2.0kg/t raw ore, and the foaming agent consumption is 0.04 ~ 0.08kg/t raw ore, and described inhibitor is waterglass.
Preferably, second step was roughly selected operation in the step (2), and the inhibitor consumption is that 0.5 ~ 1.0kg/t raw ore, collector dosage are 0.5 ~ 1.0kg/t raw ore, and the foaming agent consumption is 0.01 ~ 0.04kg/t raw ore.
In the step of the present invention (2), during twice flotation, dosing control is comparatively suitable in described scope, and consumption is lower than described scope, and flotation effect reduces, and consumption is higher than described scope, and flotation effect promotes not obvious, and reagent cost rises.
Preferably, described collecting agent by weight, by 4 ~ 7 parts of 2-naphthalene first hydroximic acids, 2 ~ 4 parts of gaultherolins make with the reactant aqueous solution that contains 1 ~ 2 part of sodium hydrate solid.Specifically comprise the steps:
Step 1, synthetic: as to take by weighing the 2-naphthoic acid of 1 weight portion in enamel reaction still, add 2 ~ 4 weight portion methyl alcohol, be stirred to the concentrated sulfuric acid that abundant dissolving back adds 0.3 ~ 0.5 weight portion, reaction is 30-35 hour under the reflux state, leaves standstill complete back to be crystallized and filters, discard filtrate, obtain crystal;
Step 2, esterification: get the crystallization of step 1 gained, add 10% the hydroxylamine hydrochloride aqueous solution in the ratio of solid masses 2:1 ~ 3, adding sodium hydroxide solution regulator solution pH value subsequently is 9 ~ 10, under 35 ℃ of-55 ℃ of conditions, reacting at least 4 hours then, is that 10% dilute sulfuric acid is acidified to pH=4 ~ 5 with mass fraction, filtration drying obtains 2-naphthalene first hydroximic acid;
Step 3, saponification: with step 2 gained 2-naphthalene first hydroximic acid, gaultherolin and sodium hydrate aqueous solution mixing, the water-bath heating was stirred 30 minutes at least, to reacting completely, obtained the good yellowish-brown liquid of light transmission, was the Rare Earth Mine collecting agent in described ratio.
Studies confirm that through the present invention, 2-naphthalene first hydroximic acid and gaultherolin separately with the reactant mixture of sodium hydroxide solution be a kind of good to the Rare Earth Mine sorting, collecting strong and the collecting agent low to temperature requirement, can be applicable to that sludge content is big, the mineral disseminated grain size is thin, gangue mineral constitutes complicated rare-earth ore ore-dressing, and consumption is lower, obtains than the more outstanding ore dressing effect of existing Rare Earth Mine collecting agent simultaneously.
Preferably, step (3) carry out three grades selected, when the first order is selected, in ore pulp, add water glass, the waterglass consumption is 50 ~ 100 gram/t raw ores, the selected and third level in the second level is selected to be the blank selected of not adding medicine.Can be understood that, the present invention is owing to passed through aforesaid improvement, make the selected operation of step (3) obtain further to improve, comprise that selected needs of the first order add a spot of inhibitor, adopt the blank selected purpose of inventing of can realizing and the selected and third level in the second level is selected, reduce reagent cost.
Preferably, comprise that also the selected gained chats of step (3) first order is carried out chats to be selected again, it is to add water glass 0.1 ~ 0.3kg/t raw ore and collecting agent 0.1 ~ 0.3kg/t raw ore and flotation in the ore pulp of the selected gained chats of the first order that described chats selects again.
Preferably, the selected gained chats in step (3) second level and the selected gained chats of the third level are returned in the former selected operation select again.
Preferably, comprise that also rougher tailings is carried out at least twice to be scanned, scanning for the first time is to add water glass 100 ~ 500g/t raw ore, collecting agent 100 ~ 500g/t raw ore and foaming agent 10 ~ 40g/t raw ore in ore pulp successively, obtain scanning a concentrate and sweep a mine tailing, scanning for the second time is to add water glass 100 ~ 300g/t raw ore, collecting agent 100 ~ 300g/t raw ore and foaming agent 10 ~ 20g/t raw ore in the mine tailing ore pulp successively to sweeping, and obtains sweeping two concentrate and final flotation tailing; To scan a concentrate mixes with the selected gained chats of step (3) first order and carries out chats and select.In this preferred version, mine tailing is scanned and can be guaranteed the optimum recovery rate of technology to reduce the REO grade of discharging mine tailing.On the other hand, will scan a concentrate and mix with the selected gained chats of the first order and carry out chats and select again, and can reduce the flotation operation sludge to the influence of separation index, reduce the sludge internal circulating load in the chats.
Beneficial effect of the present invention:
In sum, foaming agent provided by the invention is formed simply, foaming is effective, consumption is few, is used for the Rare Earth Mine flotation, can form the stable foam layer, improves flotation effect.Normal temperature ore-dressing technique of the present invention, temperature applicable range is wide, need not heat, and obtains excellent beneficiating technology index.Compare with traditional gravity treatment-magnetic separation worker, the process that adopts the application to propose not only can obtain the more dressing product of good quality, also greatly reduce the loss of rare-earth mineral in product from failing, guaranteed the rate of recovery of rare-earth mineral, realized the maximization of economic benefit.Compare with the floatation process of heating, the process that adopts the application to propose can obtain more high-quality dressing product, carries out under the flotation operation normal temperature condition, save the process of heating of flotation operation, improve production environment, reduced production cost simultaneously largely, improved recovery rate in ore-dressing.
The specific embodiment
The present invention is described in further detail below in conjunction with the specific embodiment.
One, preparation foaming agent
Embodiment 1: terpenic oil and ether alcohol oil mix by weight 1:1.
Embodiment 2: terpenic oil and pure ether oil mix by weight 3:1.
Embodiment 3: terpenic oil and pure ether oil mix by weight 2:1.
Two, sort Rare Earth Mine
Embodiment 4
Selecting the big syneclise Rare Earth Mine in Dechang, Sichuan for use is the raw ore that present embodiment is handled, and Dechang big syneclise Rare Earth Mine sludge content is big, REO grade 2.34%.
Concrete treatment process is:
1, ore grinding: with the rare-earth original ore fragmentation, add water size mixing to ore milling concentration be 60%, ore grinding to the content of-0.074mm grade is 83% then, add again water size mixing to pulp density be 30%;
2, under the normal temperature condition step 1 gained ore pulp (20 ℃ of slurry temperatures) is carried out roughly selecting operation twice, when the first step is roughly selected, the inhibitor consumption is that 1.5kg/t raw ore, collector dosage are the 1.0kg/t raw ore, the foaming agent consumption is the 0.04kg/t raw ore, obtains the first step and roughly selects concentrate and first step rougher tailings; First step rougher tailings was carried out for second step roughly select, the inhibitor consumption is that 0.5kg/t raw ore, collector dosage are the 0.5kg/t raw ore, and the foaming agent consumption is 0.01kg/t, obtains for second step at last to roughly select concentrate and rougher tailings; The used inhibitor of twice flotation is waterglass; Foaming agent is terpenic oil, and collecting agent is hydroximic acid collecting agent.
3, the first step is roughly selected concentrate and second step and roughly select the concentrate merging as the flotation rough concentrate, under the normal temperature (20 ℃ of slurry temperatures) carry out three grades selected, selected 0.05 kilogram/t of the glass raw ore that adds water of the first order, selected and the third level in the second level is selected to be the blank selected of adding medicine not, obtains the REO grade and be 28% flotation concentrate and chats at different levels;
4, to the REO grade be 28% rare earth flotation concentrate, carry out the wet high-intensity magnetic sorting, magnetic field intensity is 12000Oe, and strong magnetic concentrate is qualified rare earth ore concentrate product, and its REO grade is 55%, and the rate of recovery is 50%.
Embodiment 5
Repeat the operation of embodiment 4, difference is: foaming agent is terpenic oil and the pure ether oil mixture that mixes of 2:1 by weight.Recording the magnetic concentrate product grade at last is 57%, and the rate of recovery is 55%.
Embodiment 6
Repeat the operation of embodiment 4, difference is: the foaming agent mixture that to be terpenic oil mixes by weight 2:1 with pure ether oil, collecting agent are to be reacted by 4 parts of 2-naphthalene first hydroximic acids, 4 parts of gaultherolins and the aqueous solution that contains 2 parts of sodium hydrate solids to make.
Recording the magnetic concentrate product grade at last is 58%, and the rate of recovery is 63%.
Embodiment 7
Repeat the operation of embodiment 4, difference is: a, foaming agent are the mixture that terpenic oil and pure ether oil mix by weight 2:1; B, collecting agent are to be made with the aqueous solution reaction that contains 2 parts of sodium hydrate solids by 4 parts of 2-naphthalene first hydroximic acids, 4 parts of gaultherolins; After obtaining rougher tailings in c, the step 2, rougher tailings is carried out scanning for twice, when scanning for the first time, in ore pulp, add water glass 100g/t raw ore, collecting agent 100g/t raw ore and foaming agent 10g/t raw ore successively, scan for the first time and obtain sweeping a concentrate and sweep a mine tailing, when scanning operation for the second time, add water glass 100g/t raw ore, collecting agent 100g/t raw ore and foaming agent 10g/t ton raw ore in the mine tailing ore pulp successively to sweeping, scan for the second time and obtain sweeping two concentrate and final flotation tailing.To sweep a concentrate and mix as chats with the selected gained chats of the first order, and carry out chats and be elected to be industry again, chats adds water glass 0.1kg/t raw ore and collecting agent 0.15kg/t raw ore when selecting again; D, that the flotation concentrate in the step (3) is carried out high intensity magnetic separation is selected.
Obtaining the REO grade at last is 60.05%, and the rate of recovery is 66.43% rare earth ore concentrate, records simultaneously in the mine tailing, and the REO grade is 0.81%.
Embodiment 8
The raw ore (the REO grade is 2.8%) that present embodiment selects for use Weishan, Shandong Rare Earth Mine to handle for the present invention.
Repeat the operation of embodiment 7, difference is that a, rare-earth original ore ore grinding to the content less than 200 orders part are 80%; B, foaming agent are the mixture that terpenic oil and pure ether oil mix by weight 3:1; C, collecting agent are to be made with the aqueous solution reaction that contains 2 parts of sodium hydrate solids by 4 parts of 2-naphthalene first hydroximic acids, 4 parts of gaultherolins; D, reagent dosage was waterglass 1.0kg/t raw ore, collecting agent 1.0kg/t raw ore and foaming agent 0.05kg/t raw ore when step 2 first step was roughly selected, and reagent dosage was waterglass 0.5kg/t raw ore, collecting agent 0.5kg/t raw ore, foaming agent 0.02kg/t raw ore when second step roughly selected; E, the waterglass consumption was the 0.1kg/t raw ore when step 3 first order was selected, and f, dosing is when scanning for the first time: waterglass 0.2kg/t raw ore, collecting agent 0.2kg/t raw ore, foaming agent 0.02kg/t raw ore; Dosing is waterglass 0.1kg/t raw ore, collecting agent 0.1kg/t raw ore and foaming agent 0.01kg/t raw ore when scanning for the second time; When selecting again, f, chats add 0.15 kg water glass and 0.1 kilogram of hydroximic acid collecting agent successively as floating agent by raw ore per ton; Flotation concentrate in g, the step (3) is purified through the wet high-intensity magnetic sorting, obtains grade and be 61%, the rate of recovery is 67.49% magnetic concentrate, records simultaneously in the mine tailing, and the REO grade is 0.94%.
Embodiment 9
The raw ore of selecting for use Sichuan Mianning Rare Earth Mine to handle for the present invention, the REO grade of the low-grade Rare Earth Mine of Mianning is 2.3%.
Repeat the operation of embodiment 8, difference is: a, be 88% with rare-earth original ore ore grinding to the content less than 200 orders part, sizing mixing behind the ore grinding to pulp density is that 20%, b, foaming agent are terpenic oil and the pure ether oil mixture that mixes of 2:1 by weight; C, collecting agent are to be made with the aqueous solution reaction that contains 2 parts of sodium hydrate solids by 4 parts of 2-naphthalene first hydroximic acids, 4 parts of gaultherolins; It is waterglass 2.0kg/t raw ore, collecting agent 2.0 kg/t raw ores and foaming agent 0.08 kg/t raw ore that d, the first step are roughly selected dosing; Dosing was waterglass 1.0 kg/t raw ores, collecting agent 1.0 kg/t raw ores and foaming agent 0.04 kg/t raw ore when second step roughly selected; E, dosing was waterglass 0.1 kg/t raw ore when the first order was selected; F, the second level is selected and the third level selected be blank selected, three grades of selected chats that obtain return in the upper level operation successively; G, dosing is waterglass 0.5 kg/t raw ore, collecting agent 0.5kg/t raw ore and foaming agent 0.04 kg/t raw ore when scanning for the first time; Dosing is 0.3kg/t raw ore, collecting agent 0.3 kg/t raw ore and foaming agent 0.02 kg/t raw ore when scanning for the second time; Dosing was 0.3 kg/t raw ore and collecting agent 0.3 kg/t raw ore when h, chats selected again.Obtain grade at last and be 65%, the rate of recovery is 85% magnetic concentrate, the REO grade that records mine tailing simultaneously is 0.35%.
The ore dressing effect of the embodiment of the invention 7 technology ore dressing effects and existing technology is compared result such as table 1
Table 1 application technology and index that existing technology obtains contrast
Need to prove at last; above embodiment is only unrestricted for explanation technical scheme of the present invention; although with reference to preferred embodiment technical scheme of the present invention is had been described in detail; those skilled in the art are to be understood that; can make amendment or be equal to replacement technical scheme of the present invention; and not breaking away from aim of the present invention and scope, it all should be encompassed in the middle of protection scope of the present invention.
Claims (10)
1. rare-earth ore ore-dressing foaming agent is characterized in that: be by terpenic oil and ether alcohol oil by weight (1 ~ 3): 1 mixes.
2. the low-grade complex difficulty is selected the ore-dressing technique of Rare Earth Mine, it is characterized in that: may further comprise the steps:
(1) gets raw ore, add after the fragmentation that water is sized mixing and ore grinding to the ore weight of granularity-0.074 millimeter accounts for raw ore gross weight 80% ~ 88%;
(2) add water in step (1) the gained ore pulp and size mixing to pulp density be 20 ~ 30%, carry out substep then and roughly select operation, obtain roughly selecting concentrate and rougher tailings, described substep is roughly selected and is comprised at least twice flotation, during each flotation, in ore pulp, add inhibitor, collecting agent and described rare-earth ore ore-dressing foaming agent successively;
(3) the described concentrate of roughly selecting is carried out that two-stage is selected at least, obtain flotation concentrate and chats at different levels;
(4) step (3) gained flotation concentrate is carried out strong magnetic purification operation, obtain strong magnetic concentrate, it is qualified rare earth ore concentrate product.
3. dressing rare-earth ore technology according to claim 2, it is characterized in that: step (1) to the operation of step (4) is all carried out under normal temperature condition.
4. according to claim 2 or 3 described rare-earth mineral normal temperature sorting process, it is characterized in that: during step (2) the middle first time of flotation, the inhibitor consumption is that 1.0 ~ 2.0kg/t raw ore, collector dosage are 1.0 ~ 2.0kg/t raw ore, the foaming agent consumption is 0.04 ~ 0.08kg/t raw ore, and described inhibitor is waterglass.
5. select the ore-dressing technique of Rare Earth Mine according to the described low-grade complex difficulty of the arbitrary claim of claim 4, it is characterized in that: during step (2) the middle second time of flotation, the inhibitor consumption is that 0.5 ~ 1.0kg/t raw ore, collector dosage are 0.5 ~ 1.0kg/t raw ore, and the foaming agent consumption is 0.01 ~ 0.04kg/t raw ore.
6. low-grade complex difficulty according to claim 5 is selected the ore-dressing technique of Rare Earth Mine, it is characterized in that: described collecting agent by weight, by 4 ~ 7 parts of 2-naphthalene first hydroximic acids, 2 ~ 4 parts of gaultherolins make with the reactant aqueous solution that contains 1 ~ 2 part of sodium hydrate solid.
7. low-grade complex difficulty according to claim 6 is selected the ore-dressing technique of Rare Earth Mine, it is characterized in that: step (3) carry out three grades selected, when the first order is selected, in ore pulp, add water glass, the waterglass consumption is 50 ~ 100 gram/t raw ores, and the selected and third level in the second level is selected to be the blank selected of not adding medicine.
8. low-grade complex difficulty according to claim 7 is selected the ore-dressing technique of Rare Earth Mine, it is characterized in that: comprise that also the selected gained chats of step (3) first order is carried out chats to be selected again, it is to add water glass 0.1 ~ 0.3kg/t raw ore and collecting agent 0.1 ~ 0.3kg/t raw ore and flotation in the ore pulp of the selected gained chats of the first order that described chats selects again.
9. low-grade complex difficulty according to claim 8 is selected the ore-dressing technique of Rare Earth Mine, it is characterized in that: the selected gained chats in step (3) second level and the selected gained chats of the third level are back in the upper level flotation operation select.
10. low-grade complex difficulty according to claim 9 is selected the ore-dressing technique of Rare Earth Mine, it is characterized in that: comprise that also rougher tailings is carried out at least twice to be scanned, scanning for the first time is to add water glass 100 ~ 500g/t raw ore, collecting agent 100 ~ 500g/t raw ore and foaming agent 10 ~ 40g/t raw ore in ore pulp successively, obtain sweeping a concentrate and sweep a mine tailing, scanning for the second time is to add water glass 100 ~ 300g/t raw ore, collecting agent 100 ~ 300g/t raw ore and foaming agent 10 ~ 20g/t raw ore in the mine tailing ore pulp successively to sweeping, and obtains sweeping two concentrate and final flotation tailing; To sweep a concentrate mixes with the selected gained chats of step (3) first order and carries out chats and select.
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| CN105057112A (en) * | 2015-07-21 | 2015-11-18 | 中国地质科学院矿产综合利用研究所 | Rare earth ore collecting agent and preparation method and application thereof |
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| CN106622677A (en) * | 2016-12-21 | 2017-05-10 | 柳州市昌泉贸易有限公司 | Mining frother for rare earth ore flotation and preparation method thereof |
| CN108970812A (en) * | 2018-05-16 | 2018-12-11 | 汕头市国富锆钛实业有限公司 | The beneficiation method of beach placer |
| CN110142143A (en) * | 2019-04-09 | 2019-08-20 | 广东省资源综合利用研究所 | A kind of collecting system and its preparation method and application of W/O/W multi-phase emulsion preparation |
| CN110639690A (en) * | 2019-10-14 | 2020-01-03 | 广东省资源综合利用研究所 | Beneficiation method for high-mud micro-fine particle rare earth minerals |
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| CN106622677A (en) * | 2016-12-21 | 2017-05-10 | 柳州市昌泉贸易有限公司 | Mining frother for rare earth ore flotation and preparation method thereof |
| CN106622677B (en) * | 2016-12-21 | 2019-01-01 | 柳州市昌泉贸易有限公司 | A kind of rare-earth ore ore-dressing foaming agent and preparation method thereof |
| CN108970812A (en) * | 2018-05-16 | 2018-12-11 | 汕头市国富锆钛实业有限公司 | The beneficiation method of beach placer |
| CN110142143A (en) * | 2019-04-09 | 2019-08-20 | 广东省资源综合利用研究所 | A kind of collecting system and its preparation method and application of W/O/W multi-phase emulsion preparation |
| CN110142143B (en) * | 2019-04-09 | 2021-10-29 | 广东省资源综合利用研究所 | Collecting system prepared from W/O/W multiphase emulsion and preparation method and application thereof |
| CN110639690A (en) * | 2019-10-14 | 2020-01-03 | 广东省资源综合利用研究所 | Beneficiation method for high-mud micro-fine particle rare earth minerals |
| CN110665644A (en) * | 2019-10-15 | 2020-01-10 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of gas ash carbon-selecting foaming agent and preparation method thereof |
| CN111482264A (en) * | 2020-04-17 | 2020-08-04 | 包头稀土研究院 | Method for treating medium lean oxidized ore |
| CN111482264B (en) * | 2020-04-17 | 2021-12-28 | 包头稀土研究院 | Method for treating medium lean oxidized ore |
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