CN102886305A - Method for separating scandium from bayan obo tailings - Google Patents
Method for separating scandium from bayan obo tailings Download PDFInfo
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Abstract
The invention discloses a method for separating scandium from bayan obo tailings, which belongs to the field of mineral separation. The method takes the bayan obo tailings are raw materials and comprises the following steps of: grading the raw materials; grinding obtained coarse granular ores, and then returning and grading the ground ores; carrying out size mixing on fine granular ores, then performing low intensity magnetic separation on the fine granular ores to form a closed circuit grinding process; performing floatation on the selected tailings subjected to the low intensity magnetic separation; and then carrying out high intensity magnetic separation on ore pulp of the tailings subjected to the flotation, thus obtaining non-magnetic ores which are the concentrated scandium. According to the method disclosed by the invention, the fractionation and mineral separation method is adopted, the technology is simple and scientific, the concentrated scandium with the content of scandium oxide being more than 420ppm and the recovery rate being more than 65% can be obtained, and other recyclable resources in the bayan obo tailings can be further concentrated when the concentrated scandium is obtained.
Description
Technical field
The present invention relates to a kind of Bayan Obo mine tailing and select the scandium method, belong to the technique of preparing field.
Background technology
Except being rich in the precious resources such as iron, rare earth, fluorite, niobium, the content of its scandium and reserves also are appreciable in the Bayan Obo deposit.But because scandium belongs to rare and scatter element, the scandium resource in the Bayan Obo raw ore fails to be developed always.And in the development and use process of baiyuneboite iron, rare earth, except a small amount of scandium is followed the output of iron ore concentrate, rare earth ore concentrate and is lost, overwhelming majority scandiums are discharged with the mine tailing form, and make scandium get to a certain extent enrichment, by being enriched to about 200ppm about raw ore 80ppm.
But the scandium in the Bayan Obo mine tailing fails to be recycled utilization so far, is because this mine tailing complicated component on the one hand, scandium distribute rare loose, exist without single mineral, cause that smelting extraction process difficulty is large, cost is high, the recycling of scandium is unreasonable economically; Be owing to still also having the resources such as the higher rare earth of economic worth, iron, niobium in the Bayan Obo mine tailing on the other hand, directly extract loss and waste that scandium must cause other resource.Therefore, the Comprehensive utilization also is the prerequisite that reclaims the scandium resource from the Bayan Obo mine tailing.
At present, actually rare about the documents and materials that from the Bayan Obo mine tailing, reclaim scandium, and except a small amount of as: application number is 85106255 to mention in the rich ore deposit of white clouds and smelting the patent of extracting the scandium resource, yet there are no so far report about the ore dressing patent of extracting scandium from Bayan Obo mine tailing even raw ore.
In recent years, along with the extensive use of scandium in each fields such as scandium sodium vapor lamp, solar energy luminous battery, catalyst, Aero-Space, military projects, demand to scandium is also increasing, started the upsurge of scandium development of resources, exploitation to Bayan Obo scandium resource also more and more is subject to people's attention, the present invention is just under this background, and what propose through pre-stage test research selects the scandium method.
Summary of the invention
The technical issues that need to address of the present invention just are to overcome the defective of prior art, provide a kind of Bayan Obo mine tailing to select the scandium method, use the method can from the Bayan Obo mine tailing, obtain the higher scandium enrichment of scandium content, thereby provide quality raw materials for further smelting the recovery scandium.
For addressing the above problem, the present invention adopts following technical scheme:
The invention provides a kind of Bayan Obo mine tailing and select the scandium method, it adopts following steps:
(1) classification: the Bayan Obo mine tailing is carried out classification, coarse grain ore and smitham are separated, grader is returned in the ball mill fine grinding of coarse grain ore in sand form behind the mill, and smitham requires smitham granularity-200 order to account for more than 95% as the low intensity magnetic separation raw material;
(2) low intensity magnetic separation :-200 orders that classification is obtained account for smitham more than 95% size mixing after, carry out low intensity magnetic separation, low intensity magnetic separation comprises that one-level is roughly selected with one-level and scans, the low intensity magnetic separation magnetic field intensity is 0.15-0.3T, ore pulp mass concentration 10-30%, 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, 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 flotation;
(3) flotation: scan mine tailing as raw material take low intensity magnetic separation, the employing one-level is roughly selected, secondary is selected, secondary is scanned closed circuit flotation flowsheet, join in the rougher cell after at first the low intensity magnetic separation mine tailing being sized mixing, 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 and join in the first order cleaner cell, adjust pulp density, stir, and add successively 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 inhibitor and collecting agent, 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, 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 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 inhibitor and collecting agent, and to carry out the second level and scan, 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, and ore pulp is the raw material of next step high intensity magnetic separation in the scavenger flotation cell of the second level; The flotation pulp mass concentration is 30-60%, slurry temperature is 25-45 ℃, the pH of ore pulp is 8-10, the mass ratio that the floating agent addition is scanned mine tailing by medicament and the weak magnetic of roughly selecting adding at every turn adds, roughly select: inhibitor 2.5-4.5kg/t, collecting agent 1.5-4.0kg/t, selected and scan: inhibitor 0-2.0kg/t, collecting agent 0-2.5kg/t;
(4) high intensity magnetic separation: scan mine tailing take the second level of flotation and carry out high intensity magnetic separation as raw material, magnetic field intensity is 0.5-0.9T, and ore pulp mass concentration 5-30%, the non magnetic ore that high intensity magnetic separation obtains are final scandium enrichment.
Described Bayan Obo mine tailing be Baogang's Tailings Dam for many years stock's mine tailing or select iron take baiyuneboite as raw material or select rare earth after mine tailing.
Described classification, its equipment that adopts are a kind of in spiral classifier, the water conservancy cyclone.
Described inhibitor is waterglass.
Described collecting agent is a kind of in oxidized paraffin wax soap, the fatty acid sulfonate.
Advantage of the present invention is:
The present invention is directed to the character of Bayan Obo mine tailing, and mineral occurrence form and composition in the Bayan Obo mine tailing, consider that scandium belongs to rare and scatter element in the Bayan Obo mine tailing, characteristics without single mineral, adopt the sorting flow process of low intensity magnetic separation-flotation-high intensity magnetic separation, 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 minerals of a certain amount of scandium cause because reclaiming scandium.
At first adopt low intensity magnetic separation the strongly magnetic mineral in the Bayan Obo mine tailing can be separated, also can play the effect that removes residual medicament in the mine tailing, for good condition has been created in further flotation, the lower high intensity magnetic separation in employing magnetic field can be when deviating from impurity, reclaiming such as iron, niobium, the loss of reduce scandium.
The present invention adopts the fractionation beneficiation method, the index of whole technique and each ore-dressing practice has been carried out the control of strict science, the simple science of technique, flow process is continuous, thereby can reach preferably technical indicator, when obtaining the scandium enrichment, with the further enrichment of other recoverable resource in the Bayan Obo mine tailing.
Description of drawings
Fig. 1 is process chart of the present invention.
The specific embodiment
Embodiment 1
Take the Bayan Obo mine tailing of Baogang's Tailings Dam as raw material, this raw material contains Sc after measured
2O
3200ppm, utilize technology sorting scandium enrichment of the present invention, concrete steps such as Fig. 1:
(1) classification: the Bayan Obo mine tailing is carried out classification, coarse grain ore and smitham are separated, grader is returned in the ball mill fine grinding of coarse grain ore in sand form behind the mill, and smitham requires smitham granularity-200 order to account for more than 95% as the low intensity magnetic separation raw material;
(2) low intensity magnetic separation :-200 orders that classification is obtained account for smitham more than 95% and size mixing after mass concentration is 12%, carry out low intensity magnetic separation, low intensity magnetic separation comprises that one-level is roughly selected with one-level and scans, at first carrying out low intensity magnetic separation roughly selects, it is 0.2T 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, the low intensity magnetic separation rougher tailings is carried out low intensity magnetic separation to be scanned, it is 0.25T that magnetic field intensity is roughly selected 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 flotation;
(3) flotation: scan mine tailing as raw material take low intensity magnetic separation, the employing one-level is roughly selected, secondary is selected, secondary is scanned closed circuit flotation flowsheet, join in the rougher cell after at first the low intensity magnetic separation mine tailing being sized mixing, stir, add successively 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 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 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, 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 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 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 the raw material of next step high intensity magnetic separation in the scavenger flotation cell of the second level, the used collecting agent of flotation is oxidized paraffin wax soap, the flotation pulp mass concentration is 38%, slurry temperature is 32 ℃, the pH of ore pulp is 9.2, the mass ratio that the floating agent addition is scanned mine tailing by medicament and the weak magnetic of roughly selecting adding at every turn adds, roughly select: waterglass 3.0kg/t, oxidized paraffin wax soap 1.9kg/t, the first order is selected: waterglass 1.5kg/t, oxidized paraffin wax soap 0kg/t, the second level is selected: waterglass 1.0kg/t, oxidized paraffin wax soap 0.5kg/t, the first order is scanned: waterglass 0.5kg/t, oxidized paraffin wax soap 1.5kg/t, scan the second level: waterglass 0.2kg/t, oxidized paraffin wax soap 0.8kg/t.
(4) high intensity magnetic separation: scan mine tailing take the second time of flotation and carry out high intensity magnetic separation as raw material, magnetic field intensity is 0.8T, ore pulp mass concentration 15%, and the non magnetic ore that high intensity magnetic separation obtains is final scandium enrichment.
After measured: Sc in the scandium enrichment
2O
3440ppm, the rate of recovery 65.5% of scandium.
Embodiment 2
Select Bayan Obo mine tailing behind the iron as raw material take the Xi Kuang of Baogang, this raw material contains Sc after measured
2O
3180ppm, utilize technology sorting scandium enrichment of the present invention, concrete steps such as Fig. 1:
(1) classification: the Bayan Obo mine tailing is carried out classification, coarse grain ore and smitham are separated, grader is returned in the ball mill fine grinding of coarse grain ore in sand form behind the mill, and smitham requires smitham granularity-200 order to account for more than 95% as the low intensity magnetic separation raw material;
(2) low intensity magnetic separation :-200 orders that classification is obtained account for smitham more than 95% and size mixing after mass concentration is 15%, carry out low intensity magnetic separation, low intensity magnetic separation comprises that one-level is roughly selected with one-level and scans, at first carrying out low intensity magnetic separation roughly selects, it is 0.26T 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, 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 roughly selected 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 flotation;
(3) flotation: scan mine tailing as raw material take low intensity magnetic separation, the employing one-level is roughly selected, secondary is selected, secondary is scanned closed circuit flotation flowsheet, join in the rougher cell after at first the low intensity magnetic separation mine tailing being sized mixing, stir, add successively 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 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 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, 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 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 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 the raw material of next step high intensity magnetic separation in the scavenger flotation cell of the second level, flotation institute with medicament is oxidized paraffin wax soap, the flotation pulp mass concentration is 48%, slurry temperature is 44 ℃, the pH of ore pulp is 9.6, the mass ratio that the floating agent addition is scanned mine tailing by medicament and the weak magnetic of roughly selecting adding at every turn adds, roughly select: waterglass 4.5kg/t, oxidized paraffin wax soap 3.5kg/t, the first order is selected: waterglass 2.0kg/t, oxidized paraffin wax soap 1.8kg/t, the second level is selected: waterglass 1.0kg/t, oxidized paraffin wax soap 0.5kg/t, the first order is scanned: waterglass 0.5kg/t, oxidized paraffin wax soap 1.5kg/t, scan the second level: waterglass 0kg/t, oxidized paraffin wax soap 0.6kg/t.
(4) high intensity magnetic separation: scan mine tailing take the second time of flotation and carry out high intensity magnetic separation as raw material, magnetic field intensity is 0.6T, ore pulp mass concentration 18%, and the non magnetic ore that high intensity magnetic separation obtains is final scandium enrichment.
After measured: Sc in the scandium enrichment
2O
3430ppm, the rate of recovery 65.1% of scandium.
Embodiment 3
Select Bayan Obo mine tailing behind the rare earth as raw material take Baogang, this raw material contains Sc after measured
2O
3150ppm, utilize technology sorting scandium enrichment of the present invention, concrete steps such as Fig. 1:
(1) classification: the Bayan Obo mine tailing is carried out classification, coarse grain ore and smitham are separated, grader is returned in the ball mill fine grinding of coarse grain ore in sand form behind the mill, and smitham requires smitham granularity-200 order to account for more than 95% as the low intensity magnetic separation raw material;
(2) low intensity magnetic separation :-200 orders that classification is obtained account for smitham more than 95% and size mixing after mass concentration is 25%, carry out low intensity magnetic separation, low intensity magnetic separation comprises that one-level is roughly selected with one-level and scans, 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, 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 roughly selected 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 flotation;
(3) flotation: scan mine tailing as raw material take low intensity magnetic separation, the employing one-level is roughly selected, secondary is selected, secondary is scanned closed circuit flotation flowsheet, join in the rougher cell after at first the low intensity magnetic separation mine tailing being sized mixing, stir, add successively 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 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 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, 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 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 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 the raw material of next step high intensity magnetic separation in the scavenger flotation cell of the second level, flotation institute with medicament is oxidized paraffin wax soap, the flotation pulp mass concentration is 32%, slurry temperature is 26 ℃, the pH of ore pulp is 8.4, the mass ratio that the floating agent addition is scanned mine tailing by medicament and the weak magnetic of roughly selecting adding at every turn adds, roughly select: waterglass 2.6kg/t, oxidized paraffin wax soap 2.3kg/t, the first order is selected: waterglass 1.8kg/t, oxidized paraffin wax soap 1.2kg/t, the second level is selected: waterglass 1.0kg/t, oxidized paraffin wax soap 1.0kg/t, the first order is scanned: waterglass 0 kg/t, oxidized paraffin wax soap 1.5kg/t, scan the second level: waterglass 0 kg/t, oxidized paraffin wax soap 0.8kg/t.
(4) high intensity magnetic separation: scan mine tailing take the second time of flotation and carry out high intensity magnetic separation as raw material, magnetic field intensity is 0.5T, ore pulp mass concentration 20%, and the non magnetic ore that high intensity magnetic separation obtains is final scandium enrichment.
After measured: Sc in the scandium enrichment
2O
3430ppm, the rate of recovery 65.3% of scandium.
Embodiment 4
Take the Bayan Obo mine tailing of Baogang's Tailings Dam as raw material, this raw material contains Sc after measured
2O
3180ppm, utilize technology sorting scandium enrichment of the present invention, concrete steps such as Fig. 1:
(1) classification: the Bayan Obo mine tailing is carried out classification, coarse grain ore and smitham are separated, grader is returned in the ball mill fine grinding of coarse grain ore in sand form behind the mill, and smitham requires smitham granularity-200 order to account for more than 95% as the low intensity magnetic separation raw material;
(2) low intensity magnetic separation :-200 orders that classification is obtained account for smitham more than 95% and size mixing after mass concentration is 18%, carry out low intensity magnetic separation, low intensity magnetic separation comprises that one-level is roughly selected with one-level and scans, at first carrying out low intensity magnetic separation roughly selects, it is 0.16T 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, the low intensity magnetic separation rougher tailings is carried out low intensity magnetic separation to be scanned, it is 0.18T that magnetic field intensity is roughly selected 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 flotation;
(3) flotation: scan mine tailing as raw material take low intensity magnetic separation, the employing one-level is roughly selected, secondary is selected, secondary is scanned closed circuit flotation flowsheet, join in the rougher cell after at first the low intensity magnetic separation mine tailing being sized mixing, stir, add successively waterglass and fatty acid 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 waterglass and fatty acid 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 waterglass and fatty acid 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, 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 waterglass and fatty acid 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 waterglass and fatty acid 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 the raw material of next step high intensity magnetic separation in the scavenger flotation cell of the second level, the used collecting agent of flotation is fatty acid sulfonate, the flotation pulp mass concentration is 32%, slurry temperature is 45 ℃, the pH of ore pulp is 9.9, the mass ratio that the floating agent addition is scanned mine tailing by medicament and the weak magnetic of roughly selecting adding at every turn adds, roughly select: waterglass 4.5kg/t, oxidized paraffin wax soap 4.0kg/t, the first order is selected: waterglass 1.5kg/t, oxidized paraffin wax soap 2.4kg/t, the second level is selected: waterglass 2.0kg/t, oxidized paraffin wax soap 1.5kg/t, the first order is scanned: waterglass 0.2kg/t, oxidized paraffin wax soap 1.8kg/t, scan the second level: waterglass 0.4kg/t, oxidized paraffin wax soap 1.2kg/t.
(4) high intensity magnetic separation: scan mine tailing take the second time of flotation and carry out high intensity magnetic separation as raw material, magnetic field intensity is 0.9T, ore pulp mass concentration 8%, and the non magnetic ore that high intensity magnetic separation obtains is final scandium enrichment.
After measured: Sc in the scandium enrichment
2O
3460ppm, the rate of recovery 65.2% of scandium.
Embodiment 5
Take the Bayan Obo mine tailing of Baogang's Tailings Dam as raw material, this raw material contains Sc after measured
2O
3220ppm, utilize technology sorting scandium enrichment of the present invention, concrete steps such as Fig. 1:
(1) classification: the Bayan Obo mine tailing is carried out classification, coarse grain ore and smitham are separated, grader is returned in the ball mill fine grinding of coarse grain ore in sand form behind the mill, and smitham requires smitham granularity-200 order to account for more than 95% as the low intensity magnetic separation raw material;
(2) low intensity magnetic separation :-200 orders that classification is obtained account for smitham more than 95% and size mixing after mass concentration is 16%, carry out low intensity magnetic separation, low intensity magnetic separation comprises that one-level is roughly selected with one-level and scans, at first carrying out low intensity magnetic separation roughly selects, it is 0.22T 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, 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 roughly selected 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 flotation;
(3) flotation: scan mine tailing as raw material take low intensity magnetic separation, the employing one-level is roughly selected, secondary is selected, secondary is scanned closed circuit flotation flowsheet, join in the rougher cell after at first the low intensity magnetic separation mine tailing being sized mixing, stir, add successively waterglass and fatty acid 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 waterglass and fatty acid 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 waterglass and fatty acid 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, 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 waterglass and fatty acid 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 waterglass and fatty acid 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 the raw material of next step high intensity magnetic separation in the scavenger flotation cell of the second level, the used collecting agent of flotation is fatty acid sulfonate, the flotation pulp mass concentration is 55%, slurry temperature is 40 ℃, the pH of ore pulp is 9.5, the mass ratio that the floating agent addition is scanned mine tailing by medicament and the weak magnetic of roughly selecting adding at every turn adds, roughly select: waterglass 3.5kg/t, oxidized paraffin wax soap 3.0kg/t, the first order is selected: waterglass 1.7kg/t, oxidized paraffin wax soap 2.2kg/t, the second level is selected: waterglass 1.5kg/t, oxidized paraffin wax soap 1.0kg/t, the first order is scanned: waterglass 0.8kg/t, oxidized paraffin wax soap 1.1kg/t, scan the second level: waterglass 0kg/t, oxidized paraffin wax soap 1.0kg/t.
(4) high intensity magnetic separation: scan mine tailing take the second time of flotation and carry out high intensity magnetic separation as raw material, magnetic field intensity is 0.6T, ore pulp mass concentration 9%, and the non magnetic ore that high intensity magnetic separation obtains is final scandium enrichment.
After measured: Sc in the scandium enrichment
2O
3440ppm, the rate of recovery 65.1% 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. a Bayan Obo mine tailing selects the scandium method, it is characterized in that, it adopts following steps:
(1) classification: the Bayan Obo mine tailing is carried out classification, coarse grain ore and smitham are separated, grader is returned in the ball mill fine grinding of coarse grain ore in sand form behind the mill, and smitham requires smitham granularity-200 order to account for more than 95% as the low intensity magnetic separation raw material;
(2) low intensity magnetic separation :-200 orders that classification is obtained account for smitham more than 95% size mixing after, carry out low intensity magnetic separation, low intensity magnetic separation comprises that one-level is roughly selected with one-level and scans, the low intensity magnetic separation magnetic field intensity is 0.15-0.3T, ore pulp mass concentration 10-30%, 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, 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 flotation;
(3) flotation: scan mine tailing as raw material take low intensity magnetic separation, the employing one-level is roughly selected, secondary is selected, secondary is scanned closed circuit flotation flowsheet, join in the rougher cell after at first the low intensity magnetic separation mine tailing being sized mixing, 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 and join in the first order cleaner cell, adjust pulp density, stir, and add successively 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 inhibitor and collecting agent, 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, 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 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 inhibitor and collecting agent, and to carry out the second level and scan, 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, and ore pulp is the raw material of next step high intensity magnetic separation in the scavenger flotation cell of the second level; The flotation pulp mass concentration is 30-60%, slurry temperature is 25-45 ℃, the pH of ore pulp is 8-10, the mass ratio that the floating agent addition is scanned mine tailing by medicament and the weak magnetic of roughly selecting adding at every turn adds, roughly select: inhibitor 2.5-4.5kg/t, collecting agent 1.5-4.0kg/t, selected and scan: inhibitor 0-2.0kg/t, collecting agent 0-2.5kg/t;
(4) high intensity magnetic separation: scan mine tailing take the second level of flotation and carry out high intensity magnetic separation as raw material, magnetic field intensity is 0.5-0.9T, and ore pulp mass concentration 5-30%, the non magnetic ore that high intensity magnetic separation obtains are final scandium enrichment.
2. a kind of Bayan Obo mine tailing according to claim 1 selects the scandium method, it is characterized in that: described Bayan Obo mine tailing be Baogang's Tailings Dam for many years stock's mine tailing or select iron take baiyuneboite as raw material or select rare earth after mine tailing.
3. a kind of Bayan Obo mine tailing according to claim 1 selects the scandium method, it is characterized in that: described classification, its equipment that adopts are a kind of in spiral classifier, the water conservancy cyclone.
4. a kind of Bayan Obo mine tailing according to claim 1 selects the scandium method, it is characterized in that: described inhibitor is waterglass.
5. a kind of Bayan Obo mine tailing according to claim 1 selects the scandium method, it is characterized in that: described collecting agent is a kind of in oxidized paraffin wax soap, the fatty acid sulfonate.
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| CN106636614B (en) * | 2017-01-17 | 2019-06-04 | 东北大学 | A method of leaching niobium, scandium and rare earth element from tailing |
| CN108405171A (en) * | 2018-03-07 | 2018-08-17 | 鞍钢集团矿业有限公司 | A kind of method that magnetic-floats process integration recycling magnetic tailing |
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| CN113843183A (en) * | 2021-10-11 | 2021-12-28 | 内蒙古宏鉮科技发展有限责任公司 | Fluorite sorting method for bayan obo iron-containing surrounding rock |
| CN114471945A (en) * | 2022-01-26 | 2022-05-13 | 中南大学 | Weak magnetic mineral separation process method |
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