CN102886310A - Method for separating scandium concentrate from bayan obo tailings - Google Patents
Method for separating scandium concentrate from bayan obo tailings Download PDFInfo
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Abstract
The invention discloses a method for separating scandium concentrate from bayan obo tailings, belonging to the field of ore separation. According to a fractionation ore separation method, bayan obo tailings generated after iron separation or rare earth separation are firstly subjected to low intensity magnetic separation, then the tailings obtained through low intensity magnetic separation are subjected to high intensity magnetic separation to obtain non-magnetic ore, and finally the non-magnetic ore is subjected to flotation to obtain scandium concentrate with scandium oxide content being higher than 400ppm, wherein the recycling rate is higher than 65%. The method is simple in separation flow, reasonable in process, and can enrich other recyclable resources in the bayan obo tailings to some extent while recycling scandium; therefore, the method can be used for comprehensively recycling pare and dispersed element scandium from the bayan obo tailings.
Description
Technical field
The present invention relates to a kind of method of Bayan Obo mine tailing sorting scandium enrichment, belong to the technique of preparing field.
Background technology
Scandium is one of rare earth element, the many precious metal elements of the abundance ratio in the earth's crust (as: gold, silver) and in, heavy rare earth (as: europium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium etc.) height.But scandium also is one of typical rare and scatter element, has hardly Independent Mineral or the mineral deposit of scandium, and this has brought very large difficulty also for the smelting of selecting of scandium.
The scandium of using in the at present industry mainly is to obtain from the comprehensive recovery of industry byproduct, smelting by-product product and the three wastes.
Baiyuneboite is the intergrowth deposit that is rich in iron, rare earth, the content of its scandium and reserves the whole nation so that also be appreciable in the world, and after selecting iron and rare earth, scandium has obtained further enrichment, scandium content in the mine tailing reaches about 200ppm, and this carries the content of scandium in the scandium raw material far above industry such as alumina laterite, yangtze river channel silts.
But because Bayan Obo selects iron or selects the useful resources such as the iron that still contains a great deal of in the mine tailing of rare earth, rare earth, fluorite, niobium, and the difficult extraction of the scandium in the Bayan Obo mine tailing, if directly take this mine tailing as the raw materials recovery scandium, then will certainly cause the waste of other resource in the mine tailing, this does not meet the requirement of comprehensive utilization of resources, does not have economic benefit yet.
The work of reclaiming scandium from the Bayan Obo mine tailing still is in the junior stage at present, also from the Bayan Obo mine tailing, do not reclaim the Patents of scandium, although forefathers also did relevant research, but all do not solve the problem of comprehensive utilization of resources and scandium high efficiente callback, do not obtain preferably technique and index.
Summary of the invention
The technical issues that need to address of the present invention just are to overcome the defective of prior art, and a kind of method of Bayan Obo mine tailing sorting scandium enrichment is provided, and use the method can obtain the higher scandium enrichment of content from the Bayan Obo mine tailing.
For addressing the above problem, the present invention adopts following technical scheme:
The invention provides a kind of method of Bayan Obo mine tailing sorting scandium enrichment, described method is take the Bayan Obo mine tailing as raw material sorting scandium enrichment, and concrete steps are:
(1) low intensity magnetic separation: after the Bayan Obo mine tailing sized mixing, carry out low intensity magnetic separation, low intensity magnetic separation comprises one roughing and once purging selection, at first carrying out low intensity magnetic separation roughly selects, low intensity magnetic separation is roughly selected and is obtained low intensity magnetic separation and roughly select concentrate and low intensity magnetic separation rougher tailings, low intensity magnetic separation is roughly selected concentrate as the raw material of further selected iron ore concentrate, the low intensity magnetic separation rougher tailings is carried out low intensity magnetic separation to be scanned, low intensity magnetic separation is scanned and is obtained the low intensity magnetic separation scavenger concentrate and mine tailing is scanned in low intensity magnetic separation, the low intensity magnetic separation scavenger concentrate returns low intensity magnetic separation and roughly selects operation, mine tailing is scanned in low intensity magnetic separation carried out high intensity magnetic separation, the low intensity magnetic separation magnetic field intensity is 0.15-0.3T, ore pulp mass concentration 10-30%;
(2) high intensity magnetic separation: carry out high intensity magnetic separation take the low intensity magnetic separation mine tailing as raw material, magnetic field intensity is 0.5-1.2T, ore pulp mass concentration 5-30%, and the high intensity magnetic separation mine tailing that obtains is the raw material of flotation;
(3) flotation: after the high intensity magnetic separation mine tailing that high intensity magnetic separation is obtained is sized mixing, roughly select successively, selected, the closed circuit flotation flowsheet of scanning, selected and progression that scan is 2 grades, high intensity magnetic separation mine tailing after at first will sizing mixing joins in the rougher cell, stir, add successively adjusting agent, inhibitor and collecting agent, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and the initial separatory cell, to roughly select froth pulp joins in the first order cleaner cell, adjust pulp density, stir, and add successively adjusting agent, inhibitor and collecting agent, carry out the first order selected, the selected selected froth pulp of the first order and the interior ore pulp of first order cleaner cell of obtaining of the first order, ore pulp returns and is added in the initial separatory cell in the first order cleaner cell, the selected froth pulp of the first order joins in the cleaner cell of the second level, adjust pulp density, stir, and add successively adjusting agent, inhibitor and collecting agent carry out the second level selected, and the second level is selected to obtain ore pulp in the selected froth pulp in the second level and the second level cleaner cell, ore pulp returns and is added in the first order cleaner cell in the cleaner cell of the second level, and the selected froth pulp in the second level is easily floating mineral; Ore pulp joins in the first order scavenger flotation cell in the initial separatory cell that obtains with roughly selecting, adjust pulp density, stir, and add successively adjusting agent, inhibitor and collecting agent, carrying out the first order scans, the first order is scanned and is obtained the first order and scan ore pulp in froth pulp and the first order scavenger flotation cell, the first order is scanned froth pulp and is returned and be added in the rougher cell, ore pulp in the first order scavenger flotation cell is joined in the scavenger flotation cell of the second level, adjust pulp density, stir, and add successively adjusting agent, inhibitor and collecting agent, carrying out the second level scans, the second level is scanned to such an extent that scan ore pulp in froth pulp and the second level scavenger flotation cell to the second level, the second level is scanned froth pulp and is returned and be added in the first order scavenger flotation cell, ore pulp is final scandium enrichment in the scavenger flotation cell of the second level, the flotation pulp mass concentration is 30-60%, slurry temperature is 25-50 ℃, the pH of ore pulp is 8-10, the floating agent addition adds by the mass ratio of medicament with the high intensity magnetic separation mine tailing of roughly selecting adding at every turn, roughly selecting the medicament addition is: adjusting agent 1.0-2.5kg/t, inhibitor 2.0-4.0kg/t, collecting agent 1.5-4.0kg/t, selected and scan the medicament addition and be: adjusting agent 0.2-1.5kg/t, inhibitor 0.5-3.0kg/t, collecting agent 0.5-2.5kg/t.
Described Bayan Obo mine tailing is mine tailing or the Tailings Dam stock of the Baogang mine tailing after baiyuneboite selects iron or selects rare earth.
Described adjusting agent is sodium carbonate.
Described inhibitor is waterglass.
Described collecting agent is the one or more combination in oleic acid, tall oil, oxidized paraffin wax soap, GE-28, the petroleum sodium sulfonate.
The present invention is directed to the character of Bayan Obo mine tailing, and mineral occurrence form and composition in this kind mine tailing, consider that scandium belongs to rare and scatter element in this mine tailing, characteristics without single mineral, the beneficiation method that adopts magnetic separation to combine with flotation, on the one hand can carry out enrichment with containing the higher mineral of scandium as much as possible, also enough avoid on the other hand containing in the Bayan Obo mine tailing loss that other valuable mineral of a certain amount of scandium causes because reclaiming scandium.
Thereby advantage of the present invention is:
What the present invention adopted is the method for fractionation ore dressing, the index of whole technique and each ore-dressing practice has been carried out the control of strict science, thereby can reach preferably technical indicator; The magnetic separation of adopting can separate the magnetic mineral in the Bayan Obo mine tailing, also for further selecting iron and other mineral to prepare purer raw material; The flotation of adopting can will select rare earth in the magnetic tailing, fluorite etc. to separate with scandium contained mineral.Finally obtain scandium oxide content greater than 400ppm, the rate of recovery is greater than 65% scandium enrichment.
Technique of the present invention is briefly continuous, and clean and effective is easily realized large-scale production.
Description of drawings
Fig. 1 is process chart of the present invention.
The specific embodiment
Embodiment 1
Take composition as TFe 15.2%, REO 6.8%, Sc
2O
3The Bayan Obo mine tailing of 200ppm is raw material, utilizes technology sorting scandium enrichment of the present invention, concrete steps as shown in Figure 1:
(1) low intensity magnetic separation: carry out low intensity magnetic separation after the Bayan Obo mine tailing sized mixing, ore pulp mass concentration 10%, at first carrying out low intensity magnetic separation roughly selects, it is 0.25T that magnetic field intensity is roughly selected in low intensity magnetic separation, low intensity magnetic separation is roughly selected and is obtained low intensity magnetic separation and roughly select concentrate and low intensity magnetic separation rougher tailings, low intensity magnetic separation is roughly selected concentrate as the raw material of further selected iron ore concentrate, the low intensity magnetic separation rougher tailings is carried out low intensity magnetic separation to be scanned, it is 0.3T that magnetic field intensity is scanned in low intensity magnetic separation, low intensity magnetic separation is scanned and is obtained the low intensity magnetic separation scavenger concentrate and mine tailing is scanned in low intensity magnetic separation, the low intensity magnetic separation scavenger concentrate returns low intensity magnetic separation and roughly selects operation, mine tailing is scanned in low intensity magnetic separation carried out high intensity magnetic separation;
(2) high intensity magnetic separation: carry out high intensity magnetic separation take the low intensity magnetic separation mine tailing as raw material, magnetic field intensity is 1.0 T, ore pulp mass concentration 8%, and the high intensity magnetic separation mine tailing that obtains is the raw material of flotation;
(3) flotation: after the high intensity magnetic separation mine tailing that high intensity magnetic separation is obtained is sized mixing, roughly select successively, selected, the closed circuit flotation flowsheet of scanning, selected and progression that scan is 2 grades, high intensity magnetic separation mine tailing after at first will sizing mixing joins in the rougher cell, stir, add successively sodium carbonate, waterglass and oleic acid, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and the initial separatory cell, to roughly select froth pulp joins in the first order cleaner cell, adjust pulp density, stir, and add successively sodium carbonate, waterglass and oleic acid, carry out the first order selected, the selected selected froth pulp of the first order and the interior ore pulp of first order cleaner cell of obtaining of the first order, ore pulp returns and is added in the initial separatory cell in the first order cleaner cell, the selected froth pulp of the first order joins in the cleaner cell of the second level, adjust pulp density, stir, and add successively sodium carbonate, waterglass and oleic acid, carry out the second level selected, the selected selected froth pulp in the second level and the interior ore pulp of second level cleaner cell of obtaining in the second level, ore pulp returns and is added in the first order cleaner cell in the cleaner cell of the second level, the selected froth pulp in the second level is easily floating mineral, as selecting rare earth, the raw material of fluorite is preserved, ore pulp joins in the first order scavenger flotation cell in the initial separatory cell that obtains with roughly selecting, adjust pulp density, stir, and add successively sodium carbonate, waterglass and oleic acid, carrying out the first order scans, the first order is scanned and is obtained the first order and scan ore pulp in froth pulp and the first order scavenger flotation cell, the first order is scanned froth pulp and is returned and be added in the rougher cell, ore pulp in the first order scavenger flotation cell is joined in the scavenger flotation cell of the second level, adjust pulp density, stir, and add successively sodium carbonate, waterglass and oleic acid, carrying out the second level scans, the second level is scanned to such an extent that scan ore pulp in froth pulp and the second level scavenger flotation cell to the second level, the second level is scanned froth pulp and is returned and be added in the first order scavenger flotation cell, ore pulp is final scandium enrichment in the scavenger flotation cell of the second level, in the whole floatation process, the ore pulp mass concentration is 30%, slurry temperature is 25 ℃, and the pH of ore pulp is 9.6; The floating agent addition adds by the mass ratio of medicament with the high intensity magnetic separation mine tailing of roughly selecting adding at every turn, roughly selecting the medicament addition is: sodium carbonate 1.5kg/t, waterglass 4.0kg/t, oleic acid 1.8kg/t, selected medicament addition is: an essence: sodium carbonate 0.3kg/t, waterglass 2.5kg/t, oleic acid 2.2kg/t, two essences: sodium carbonate 0.2kg/t, waterglass 1.6kg/t, oleic acid 1.6kg/t, the medicament addition of scanning is: sweep: sodium carbonate 0.2kg/t, waterglass 0.8kg/t, oleic acid 0.8kg/t, two sweep: sodium carbonate 0.2kg/t, waterglass 0.7kg/t, oleic acid 1.0kg/t.
After measured: TFe 7.3%, REO 0.5%, Sc in the scandium enrichment
2O
3430ppm, the rate of recovery 67.2% of scandium.
Embodiment 2
Take composition as TFe 18.2%, REO 5.3%, Sc
2O
3The Bayan Obo mine tailing of 230ppm is raw material, utilizes technology sorting scandium enrichment of the present invention, concrete steps as shown in Figure 1:
(1) low intensity magnetic separation: carry out low intensity magnetic separation after the Bayan Obo mine tailing sized mixing, ore pulp mass concentration 15%, at first carrying out low intensity magnetic separation roughly selects, it is 0.28T that magnetic field intensity is roughly selected in low intensity magnetic separation, low intensity magnetic separation is roughly selected and is obtained low intensity magnetic separation and roughly select concentrate and low intensity magnetic separation rougher tailings, low intensity magnetic separation is roughly selected concentrate as the raw material of further selected iron ore concentrate, the low intensity magnetic separation rougher tailings is carried out low intensity magnetic separation to be scanned, it is 0.22T that magnetic field intensity is scanned in low intensity magnetic separation, low intensity magnetic separation is scanned and is obtained the low intensity magnetic separation scavenger concentrate and mine tailing is scanned in low intensity magnetic separation, the low intensity magnetic separation scavenger concentrate returns low intensity magnetic separation and roughly selects operation, mine tailing is scanned in low intensity magnetic separation carried out high intensity magnetic separation;
(2) high intensity magnetic separation: carry out high intensity magnetic separation take the low intensity magnetic separation mine tailing as raw material, magnetic field intensity is 0.6 T, ore pulp mass concentration 16%, and the high intensity magnetic separation mine tailing that obtains is the raw material of flotation;
(3) flotation: after the high intensity magnetic separation mine tailing that high intensity magnetic separation is obtained is sized mixing, roughly select successively, selected, the closed circuit flotation flowsheet of scanning, selected and progression that scan is 2 grades, high intensity magnetic separation mine tailing after at first will sizing mixing joins in the rougher cell, stir, add successively sodium carbonate, waterglass and GE-28, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and the initial separatory cell, to roughly select froth pulp joins in the first order cleaner cell, adjust pulp density, stir, and add successively sodium carbonate, waterglass and GE-28, carry out the first order selected, the selected selected froth pulp of the first order and the interior ore pulp of first order cleaner cell of obtaining of the first order, ore pulp returns and is added in the initial separatory cell in the first order cleaner cell, the selected froth pulp of the first order joins in the cleaner cell of the second level, adjust pulp density, stir, and add successively sodium carbonate, waterglass and GE-28, carry out the second level selected, the selected selected froth pulp in the second level and the interior ore pulp of second level cleaner cell of obtaining in the second level, ore pulp returns and is added in the first order cleaner cell in the cleaner cell of the second level, the selected froth pulp in the second level is easily floating mineral, as selecting rare earth, the raw material of fluorite is preserved, ore pulp joins in the first order scavenger flotation cell in the initial separatory cell that obtains with roughly selecting, adjust pulp density, stir, and add successively sodium carbonate, waterglass and GE-28, carrying out the first order scans, the first order is scanned and is obtained the first order and scan ore pulp in froth pulp and the first order scavenger flotation cell, the first order is scanned froth pulp and is returned and be added in the rougher cell, ore pulp in the first order scavenger flotation cell is joined in the scavenger flotation cell of the second level, adjust pulp density, stir, and add successively sodium carbonate, waterglass and GE-28, carrying out the second level scans, the second level is scanned to such an extent that scan ore pulp in froth pulp and the second level scavenger flotation cell to the second level, the second level is scanned froth pulp and is returned and be added in the first order scavenger flotation cell, ore pulp is final scandium enrichment in the scavenger flotation cell of the second level, in the whole floatation process, the ore pulp mass concentration is 40%, slurry temperature is 30 ℃, and the pH of ore pulp is 8.2; The floating agent addition adds by the mass ratio of medicament with the high intensity magnetic separation mine tailing of roughly selecting adding at every turn, roughly selecting the medicament addition is: sodium carbonate 1.5kg/t, waterglass 3.0kg/t, GE-28 1.5kg/t, selected medicament addition is: an essence: sodium carbonate 1.0kg/t, waterglass 2.0kg/t, GE-28 2.0kg/t, two essences: sodium carbonate 0.7kg/t, waterglass 1.3kg/t, GE-28 1.1kg/t, the medicament addition of scanning is: sweep: sodium carbonate 0.8kg/t, waterglass 0.6kg/t, GE-28 1.8kg/t, two sweep: sodium carbonate 0.6kg/t, waterglass 0.5kg/t, GE-28 1.2kg/t.
After measured: TFe 8.8%, REO 0.6%, Sc in the scandium enrichment
2O
3470ppm, the rate of recovery 65.6% of scandium.
Embodiment 3
Take composition as TFe 22.5%, REO 3.9%, Sc
2O
3The Bayan Obo mine tailing of 250ppm is raw material, utilizes technology sorting scandium enrichment of the present invention, concrete steps as shown in Figure 1:
(1) low intensity magnetic separation: carry out low intensity magnetic separation after the Bayan Obo mine tailing sized mixing, ore pulp mass concentration 28%, at first carrying out low intensity magnetic separation roughly selects, it is 0.18T that magnetic field intensity is roughly selected in low intensity magnetic separation, low intensity magnetic separation is roughly selected and is obtained low intensity magnetic separation and roughly select concentrate and low intensity magnetic separation rougher tailings, low intensity magnetic separation is roughly selected concentrate as the raw material of further selected iron ore concentrate, the low intensity magnetic separation rougher tailings is carried out low intensity magnetic separation to be scanned, it is 0.16T that magnetic field intensity is scanned in low intensity magnetic separation, low intensity magnetic separation is scanned and is obtained the low intensity magnetic separation scavenger concentrate and mine tailing is scanned in low intensity magnetic separation, the low intensity magnetic separation scavenger concentrate returns low intensity magnetic separation and roughly selects operation, mine tailing is scanned in low intensity magnetic separation carried out high intensity magnetic separation;
(2) high intensity magnetic separation: carry out high intensity magnetic separation take the low intensity magnetic separation mine tailing as raw material, magnetic field intensity is 1.2 T, ore pulp mass concentration 25%, and the high intensity magnetic separation mine tailing that obtains is the raw material of flotation;
(3) flotation: after the high intensity magnetic separation mine tailing that high intensity magnetic separation is obtained is sized mixing, roughly select successively, selected, the closed circuit flotation flowsheet of scanning, selected and progression that scan is 2 grades, high intensity magnetic separation mine tailing after at first will sizing mixing joins in the rougher cell, stir, add successively NaOH, the tall oil of waterglass and mass ratio 3:1 and the mixture of petroleum sodium sulfonate, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and the initial separatory cell, to roughly select froth pulp joins in the first order cleaner cell, adjust pulp density, stir, and add successively NaOH, the tall oil of waterglass and mass ratio 3:1 and the mixture of petroleum sodium sulfonate, carry out the first order selected, the selected selected froth pulp of the first order and the interior ore pulp of first order cleaner cell of obtaining of the first order, ore pulp returns and is added in the initial separatory cell in the first order cleaner cell, the selected froth pulp of the first order joins in the cleaner cell of the second level, adjust pulp density, stir, and add successively NaOH, the tall oil of waterglass and mass ratio 3:1 and the mixture of petroleum sodium sulfonate, carry out the second level selected, the selected selected froth pulp in the second level and the interior ore pulp of second level cleaner cell of obtaining in the second level, ore pulp returns and is added in the first order cleaner cell in the cleaner cell of the second level, the selected froth pulp in the second level is easily floating mineral, as selecting rare earth, the raw material of fluorite is preserved, ore pulp joins in the first order scavenger flotation cell in the initial separatory cell that obtains with roughly selecting, adjust pulp density, stir, and add successively NaOH, the tall oil of waterglass and mass ratio 3:1 and the mixture of petroleum sodium sulfonate, carrying out the first order scans, the first order is scanned and is obtained the first order and scan ore pulp in froth pulp and the first order scavenger flotation cell, the first order is scanned froth pulp and is returned and be added in the rougher cell, ore pulp in the first order scavenger flotation cell is joined in the scavenger flotation cell of the second level, adjust pulp density, stir, and add successively NaOH, the tall oil of waterglass and mass ratio 3:1 and the mixture of petroleum sodium sulfonate, carrying out the second level scans, the second level is scanned to such an extent that scan ore pulp in froth pulp and the second level scavenger flotation cell to the second level, the second level is scanned froth pulp and is returned and be added in the first order scavenger flotation cell, ore pulp is final scandium enrichment in the scavenger flotation cell of the second level, in the whole floatation process, the ore pulp mass concentration is 50%, slurry temperature is 56 ℃, and the pH of ore pulp is 9.9; The floating agent addition adds by the mass ratio of medicament with the high intensity magnetic separation mine tailing of roughly selecting adding at every turn, roughly selecting the medicament addition is: NaOH 1.5kg/t, waterglass 2.0kg/t, the mixture 3.6kg/t of the tall oil of mass ratio 3:1 and petroleum sodium sulfonate, selected medicament addition is: an essence: NaOH 0.2kg/t, waterglass 0.6kg/t, the mixture 1.0kg/t of the tall oil of mass ratio 3:1 and petroleum sodium sulfonate, two essences: NaOH 0.2kg/t, waterglass 0.3kg/t, the mixture 0.5kg/t of the tall oil of mass ratio 3:1 and petroleum sodium sulfonate, the medicament addition of scanning is: sweep: NaOH 0.2kg/t, waterglass 0.6kg/t, the mixture 1.0kg/t of the tall oil of mass ratio 3:1 and petroleum sodium sulfonate, two sweep: NaOH 0.2kg/t, waterglass 0.5kg/t, the mixture 0.7kg/t of the tall oil of mass ratio 3:1 and petroleum sodium sulfonate.
After measured: TFe 8.7%, REO 0.3%, Sc in the scandium enrichment
2O
3440ppm, the rate of recovery 66.1% of scandium.
Embodiment 4
Take composition as TFe 13.1%, REO 7.1%, Sc
2O
3The Bayan Obo mine tailing of 195ppm is raw material, utilizes technology sorting scandium enrichment of the present invention, concrete steps as shown in Figure 1:
(1) low intensity magnetic separation: carry out low intensity magnetic separation after the Bayan Obo mine tailing sized mixing, ore pulp mass concentration 12%, at first carrying out low intensity magnetic separation roughly selects, it is 0.3T that magnetic field intensity is roughly selected in low intensity magnetic separation, low intensity magnetic separation is roughly selected and is obtained low intensity magnetic separation and roughly select concentrate and low intensity magnetic separation rougher tailings, low intensity magnetic separation is roughly selected concentrate as the raw material of further selected iron ore concentrate, the low intensity magnetic separation rougher tailings is carried out low intensity magnetic separation to be scanned, it is 0.3T that magnetic field intensity is scanned in low intensity magnetic separation, low intensity magnetic separation is scanned and is obtained the low intensity magnetic separation scavenger concentrate and mine tailing is scanned in low intensity magnetic separation, the low intensity magnetic separation scavenger concentrate returns low intensity magnetic separation and roughly selects operation, mine tailing is scanned in low intensity magnetic separation carried out high intensity magnetic separation;
(2) high intensity magnetic separation: carry out high intensity magnetic separation take the low intensity magnetic separation mine tailing as raw material, magnetic field intensity is 1.0 T, ore pulp mass concentration 35%, and the high intensity magnetic separation mine tailing that obtains is the raw material of flotation;
(3) flotation: after the high intensity magnetic separation mine tailing that high intensity magnetic separation is obtained is sized mixing, roughly select successively, selected, the closed circuit flotation flowsheet of scanning, selected and progression that scan is 2 grades, high intensity magnetic separation mine tailing after at first will sizing mixing joins in the rougher cell, stir, add successively sodium carbonate, waterglass and oxidized paraffin wax soap, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and the initial separatory cell, to roughly select froth pulp joins in the first order cleaner cell, adjust pulp density, stir, and add successively sodium carbonate, waterglass and oxidized paraffin wax soap, carry out the first order selected, the selected selected froth pulp of the first order and the interior ore pulp of first order cleaner cell of obtaining of the first order, ore pulp returns and is added in the initial separatory cell in the first order cleaner cell, the selected froth pulp of the first order joins in the cleaner cell of the second level, adjust pulp density, stir, and add successively sodium carbonate, waterglass and oxidized paraffin wax soap, carry out the second level selected, the selected selected froth pulp in the second level and the interior ore pulp of second level cleaner cell of obtaining in the second level, ore pulp returns and is added in the first order cleaner cell in the cleaner cell of the second level, the selected froth pulp in the second level is easily floating mineral, as selecting rare earth, the raw material of fluorite is preserved, ore pulp joins in the first order scavenger flotation cell in the initial separatory cell that obtains with roughly selecting, adjust pulp density, stir, and add successively sodium carbonate, waterglass and oxidized paraffin wax soap, carrying out the first order scans, the first order is scanned and is obtained the first order and scan ore pulp in froth pulp and the first order scavenger flotation cell, the first order is scanned froth pulp and is returned and be added in the rougher cell, ore pulp in the first order scavenger flotation cell is joined in the scavenger flotation cell of the second level, adjust pulp density, stir, and add successively sodium carbonate, waterglass and oxidized paraffin wax soap, carrying out the second level scans, the second level is scanned to such an extent that scan ore pulp in froth pulp and the second level scavenger flotation cell to the second level, the second level is scanned froth pulp and is returned and be added in the first order scavenger flotation cell, ore pulp is final scandium enrichment in the scavenger flotation cell of the second level, in the whole floatation process, the ore pulp mass concentration is 30%, slurry temperature is 38 ℃, and the pH of ore pulp is 9.5; The floating agent addition adds by the mass ratio of medicament with the high intensity magnetic separation mine tailing of roughly selecting adding at every turn, roughly selecting the medicament addition is: sodium carbonate 2.5kg/t, waterglass 3.0kg/t, oxidized paraffin wax soap 3.5kg/t, selected medicament addition is: an essence: sodium carbonate 1.5kg/t, waterglass 2.5kg/t, oxidized paraffin wax soap 2.0kg/t, two essences: sodium carbonate 1.2kg/t, waterglass 1.6kg/t, oxidized paraffin wax soap 1.4kg/t, the medicament addition of scanning is: sweep: sodium carbonate 0.4kg/t, waterglass 0.8kg/t, oxidized paraffin wax soap 1.5kg/t, two sweep: sodium carbonate 0.2kg/t, waterglass 0.6kg/t, oxidized paraffin wax soap 1.2kg/t.
After measured: TFe 7.0%, REO 0.3%, Sc in the scandium enrichment
2O
3490ppm, the rate of recovery 69.0% of scandium.
Embodiment 5
Take composition as TFe 16.6%, REO 2.1%, Sc
2O
3The Bayan Obo mine tailing of 250ppm is raw material, utilizes technology sorting scandium enrichment of the present invention, and concrete steps are as follows:
(1) low intensity magnetic separation: carry out low intensity magnetic separation after the Bayan Obo mine tailing sized mixing, ore pulp mass concentration 10%, at first carrying out low intensity magnetic separation roughly selects, it is 0.28T that magnetic field intensity is roughly selected in low intensity magnetic separation, low intensity magnetic separation is roughly selected and is obtained low intensity magnetic separation and roughly select concentrate and low intensity magnetic separation rougher tailings, low intensity magnetic separation is roughly selected concentrate as the raw material of further selected iron ore concentrate, the low intensity magnetic separation rougher tailings is carried out low intensity magnetic separation to be scanned, it is 0.28T that magnetic field intensity is scanned in low intensity magnetic separation, low intensity magnetic separation is scanned and is obtained the low intensity magnetic separation scavenger concentrate and mine tailing is scanned in low intensity magnetic separation, the low intensity magnetic separation scavenger concentrate returns low intensity magnetic separation and roughly selects operation, mine tailing is scanned in low intensity magnetic separation carried out high intensity magnetic separation;
(2) high intensity magnetic separation: carry out high intensity magnetic separation take the low intensity magnetic separation mine tailing as raw material, magnetic field intensity is 1.0 T, ore pulp mass concentration 6%, and the high intensity magnetic separation mine tailing that obtains is the raw material of flotation;
(3) flotation: after the high intensity magnetic separation mine tailing that high intensity magnetic separation is obtained is sized mixing, roughly select successively, selected, the closed circuit flotation flowsheet of scanning, selected and progression that scan is 2 grades, high intensity magnetic separation mine tailing after at first will sizing mixing joins in the rougher cell, stir, add successively sodium carbonate, waterglass and oleic acid, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and the initial separatory cell, to roughly select froth pulp joins in the first order cleaner cell, adjust pulp density, stir, and add successively sodium carbonate, waterglass and oleic acid, carry out the first order selected, the selected selected froth pulp of the first order and the interior ore pulp of first order cleaner cell of obtaining of the first order, ore pulp returns and is added in the initial separatory cell in the first order cleaner cell, the selected froth pulp of the first order joins in the cleaner cell of the second level, adjust pulp density, stir, and add successively sodium carbonate, waterglass and oleic acid, carry out the second level selected, the selected selected froth pulp in the second level and the interior ore pulp of second level cleaner cell of obtaining in the second level, ore pulp returns and is added in the first order cleaner cell in the cleaner cell of the second level, the selected froth pulp in the second level is easily floating mineral, as selecting rare earth, the raw material of fluorite is preserved, ore pulp joins in the first order scavenger flotation cell in the initial separatory cell that obtains with roughly selecting, adjust pulp density, stir, and add successively sodium carbonate, waterglass and oleic acid, carrying out the first order scans, the first order is scanned and is obtained the first order and scan ore pulp in froth pulp and the first order scavenger flotation cell, the first order is scanned froth pulp and is returned and be added in the rougher cell, ore pulp in the first order scavenger flotation cell is joined in the scavenger flotation cell of the second level, adjust pulp density, stir, and add successively sodium carbonate, waterglass and oleic acid, carrying out the second level scans, the second level is scanned to such an extent that scan ore pulp in froth pulp and the second level scavenger flotation cell to the second level, the second level is scanned froth pulp and is returned and be added in the first order scavenger flotation cell, ore pulp is final scandium enrichment in the scavenger flotation cell of the second level, in the whole floatation process, the ore pulp mass concentration is 45%, slurry temperature is 40 ℃, and the pH of ore pulp is 9.5; The floating agent addition adds by the mass ratio of medicament with the high intensity magnetic separation mine tailing of roughly selecting adding at every turn, roughly selecting the medicament addition is: sodium carbonate 2.0kg/t, waterglass 3.0kg/t, oleic acid 3.5kg/t, selected medicament addition is: an essence: sodium carbonate 1.0kg/t, waterglass 2.2kg/t, oleic acid 1.8kg/t, two essences: sodium carbonate 0.7kg/t, waterglass 1.5kg/t, oleic acid 1.5kg/t, the medicament addition of scanning is: sweep: sodium carbonate 0.6kg/t, waterglass 0.8kg/t, oleic acid 0.8kg/t, two sweep: sodium carbonate 0.4kg/t, waterglass 0.7kg/t, oleic acid 0.8kg/t.
After measured: TFe 6.9%, REO 0.2%, Sc in the scandium enrichment
2O
3450ppm, the rate of recovery 65.5% of scandium.
It should be noted that at last: obviously, above-described embodiment only is for example of the present invention clearly is described, and is not the restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.And the apparent variation of being amplified out thus or change still are among protection scope of the present invention.
Claims (5)
1. the method for a Bayan Obo mine tailing sorting scandium enrichment, it is characterized in that: described method is take the Bayan Obo mine tailing as raw material sorting scandium enrichment, and concrete steps are:
(1) low intensity magnetic separation: after the Bayan Obo mine tailing sized mixing, carry out low intensity magnetic separation, low intensity magnetic separation comprises one roughing and once purging selection, at first carrying out low intensity magnetic separation roughly selects, low intensity magnetic separation is roughly selected and is obtained low intensity magnetic separation and roughly select concentrate and low intensity magnetic separation rougher tailings, low intensity magnetic separation is roughly selected concentrate as the raw material of further selected iron ore concentrate, the low intensity magnetic separation rougher tailings is carried out low intensity magnetic separation to be scanned, low intensity magnetic separation is scanned and is obtained the low intensity magnetic separation scavenger concentrate and mine tailing is scanned in low intensity magnetic separation, the low intensity magnetic separation scavenger concentrate returns low intensity magnetic separation and roughly selects operation, mine tailing is scanned in low intensity magnetic separation carried out high intensity magnetic separation, the low intensity magnetic separation magnetic field intensity is 0.15-0.3T, ore pulp mass concentration 10-30%;
(2) high intensity magnetic separation: carry out high intensity magnetic separation take the low intensity magnetic separation mine tailing as raw material, magnetic field intensity is 0.5-1.2T, ore pulp mass concentration 5-30%, and the high intensity magnetic separation mine tailing that obtains is the raw material of flotation;
(3) flotation: after the high intensity magnetic separation mine tailing that high intensity magnetic separation is obtained is sized mixing, roughly select successively, selected, the closed circuit flotation flowsheet of scanning, selected and progression that scan is 2 grades, high intensity magnetic separation mine tailing after at first will sizing mixing joins in the rougher cell, stir, add successively adjusting agent, inhibitor and collecting agent, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and the initial separatory cell, to roughly select froth pulp joins in the first order cleaner cell, adjust pulp density, stir, and add successively adjusting agent, inhibitor and collecting agent, carry out the first order selected, the selected selected froth pulp of the first order and the interior ore pulp of first order cleaner cell of obtaining of the first order, ore pulp returns and is added in the initial separatory cell in the first order cleaner cell, the selected froth pulp of the first order joins in the cleaner cell of the second level, adjust pulp density, stir, and add successively adjusting agent, inhibitor and collecting agent carry out the second level selected, and the second level is selected to obtain ore pulp in the selected froth pulp in the second level and the second level cleaner cell, ore pulp returns and is added in the first order cleaner cell in the cleaner cell of the second level, and the selected froth pulp in the second level is easily floating mineral; Ore pulp joins in the first order scavenger flotation cell in the initial separatory cell that obtains with roughly selecting, adjust pulp density, stir, and add successively adjusting agent, inhibitor and collecting agent, carrying out the first order scans, the first order is scanned and is obtained the first order and scan ore pulp in froth pulp and the first order scavenger flotation cell, the first order is scanned froth pulp and is returned and be added in the rougher cell, ore pulp in the first order scavenger flotation cell is joined in the scavenger flotation cell of the second level, adjust pulp density, stir, and add successively adjusting agent, inhibitor and collecting agent, carrying out the second level scans, the second level is scanned to such an extent that scan ore pulp in froth pulp and the second level scavenger flotation cell to the second level, the second level is scanned froth pulp and is returned and be added in the first order scavenger flotation cell, ore pulp is final scandium enrichment in the scavenger flotation cell of the second level, the flotation pulp mass concentration is 30-60%, slurry temperature is 25-50 ℃, the pH of ore pulp is 8-10, the floating agent addition adds by the mass ratio of medicament with the high intensity magnetic separation mine tailing of roughly selecting adding at every turn, roughly selecting the medicament addition is: adjusting agent 1.0-2.5kg/t, inhibitor 2.0-4.0kg/t, collecting agent 1.5-4.0kg/t, selected and scan the medicament addition and be: adjusting agent 0.2-1.5kg/t, inhibitor 0.5-3.0kg/t, collecting agent 0.5-2.5kg/t.
2. the method for a kind of Bayan Obo mine tailing sorting scandium enrichment as claimed in claim 1, it is characterized in that: described Bayan Obo mine tailing is mine tailing or the Tailings Dam stock of the Baogang mine tailing after baiyuneboite selects iron or selects rare earth.
3. the method for a kind of Bayan Obo mine tailing sorting scandium enrichment as claimed in claim 1, it is characterized in that: described adjusting agent is sodium carbonate.
4. the method for a kind of Bayan Obo mine tailing sorting scandium enrichment as claimed in claim 1, it is characterized in that: described inhibitor is waterglass.
5. the method for a kind of Bayan Obo mine tailing sorting scandium enrichment as claimed in claim 1, it is characterized in that: described collecting agent is the one or more combination in oleic acid, tall oil, oxidized paraffin wax soap, GE-28, the petroleum sodium sulfonate.
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| CN103357500A (en) * | 2013-07-17 | 2013-10-23 | 内蒙古科技大学 | Ore-dressing method for recovering iron from Bayan Obo mine tailing |
| CN104263926A (en) * | 2014-09-22 | 2015-01-07 | 北京华夏建龙矿业科技有限公司 | Scandium extraction technology of scandium-containing ultra-basic rock |
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| CN103357500A (en) * | 2013-07-17 | 2013-10-23 | 内蒙古科技大学 | Ore-dressing method for recovering iron from Bayan Obo mine tailing |
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| CN106378252A (en) * | 2016-09-29 | 2017-02-08 | 中国地质科学院矿产综合利用研究所 | Beneficiation and enrichment method for primary scandium ore |
| CN108580031A (en) * | 2018-07-19 | 2018-09-28 | 东北大学 | A kind of beneficiation method that more metal association iron selection tailings are roasted in advance |
| CN108580031B (en) * | 2018-07-19 | 2020-03-13 | 东北大学 | Mineral separation method for pre-roasting polymetallic associated iron tailings |
| CN109013046A (en) * | 2018-08-02 | 2018-12-18 | 广东省资源综合利用研究所 | A method of recycling spodumene from the solid waste of magnetism containing spodumene |
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| CN111686922A (en) * | 2020-05-08 | 2020-09-22 | 包头钢铁（集团）有限责任公司 | Industrial ore dressing process for bayan obo complex rare earth ore |
| CN113333181A (en) * | 2021-06-18 | 2021-09-03 | 核工业北京化工冶金研究院 | Flotation method for severely weathered rare earth ore |
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