CN102886305B - A kind of Bayan Obo mine tailing selects scandium method - Google Patents
A kind of Bayan Obo mine tailing selects scandium method Download PDFInfo
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Abstract
The invention discloses Bayan Obo mine tailing and select scandium method, belong to ore dressing field.With Bayan Obo iron selection tailings for raw material, first carry out classification, the coarse grain ore ore grinding obtained is returned classification, and smitham carries out low intensity magnetic separation after sizing mixing, and forms closed circuit grinding flow process; Carry out flotation to the low intensity magnetic separation mine tailing selected, then carry out high intensity magnetic separation to flotation tailing ore pulp, the non magnetic ore that high intensity magnetic separation obtains is scandium enriched substance.The present invention adopts fractionation beneficiation method, the simple science of technique, can obtain scandium oxide content and be greater than 420ppm, the scandium enriched substance that the rate of recovery is greater than 65%, and while obtaining scandium enriched substance, other recoverable resource in Bayan Obo mine tailing can be obtained further enrichment.
Description
Technical field
The present invention relates to a kind of Bayan Obo mine tailing and select scandium method, belong to technical field of beneficiation.
Background technology
In Bayan Obo deposit except being rich in the precious resources such as iron, rare earth, fluorite, niobium, the content of its scandium and reserves are also appreciable.But because scandium belongs to rare and scatter element, the scandium resource in Bayan Obo raw ore fails to be developed always.And in the exploitation process of baiyuneboite iron, rare earth, except a small amount of scandium loses with the output of iron ore concentrate, rare earth ore concentrate, overwhelming majority scandium is discharged with mine tailing form, and makes scandium obtain enrichment to a certain extent, is enriched to about 200ppm by raw ore about 80ppm.
But the scandium in Bayan Obo mine tailing fails to be recycled utilization so far, be on the one hand due to this mine tailing complicated component, scandium distribution rare loose, exist without single mineral, cause and smelt that extraction process difficulty is large, cost is high, the recycling of scandium is unreasonable economically; That extracting directly scandium must cause loss and the waste of other resource owing to still also having the resource such as rare earth, iron, niobium that economic worth is higher in Bayan Obo mine tailing on the other hand.Therefore, Comprehensive utilization is also the prerequisite from Bayan Obo mining tailing scandium resource.
At present, actually rare about the documents and materials reclaiming scandium from Bayan Obo mine tailing, and except a small amount of as: application number be 85106255 mention that white clouds are won in ore deposit except the patent of smelting and extracting scandium resource, have not been reported so far about the ore dressing patent extracting scandium from Bayan Obo mine tailing even raw ore.
In recent years, along with scandium is in the extensive use in each fields such as scandium sodium vapor lamp, solar energy luminous battery, catalyst, Aero-Space, military project, also increasing to the demand of scandium, start the upsurge of scandium development of resources, the exploitation of Bayan Obo scandium resource is also more and more subject to people's attention, just in this context, through pre-stage test research, proposition selects scandium method in the present invention.
Summary of the invention
The technical issues that need to address of the present invention are just the defect overcoming prior art, a kind of Bayan Obo mine tailing is provided to select scandium method, use the method can obtain the higher scandium enriched substance of scandium content from Bayan Obo mine tailing, thus provide quality raw materials for smelting recovery scandium further.
For solving the problem, the present invention adopts following technical scheme:
The invention provides a kind of Bayan Obo mine tailing and select scandium method, it adopts following steps:
(1) classification: carry out classification to Bayan Obo mine tailing, separates coarse grain ore with smitham, and the ball mill fine grinding of coarse grain ore in sand form, returns grader after mill, and smitham, as low intensity magnetic separation raw material, requires that smitham granularity-200 order accounts for more than 95%;
(2) low intensity magnetic separation: after the smitham that-200 orders obtained classification account for more than 95% is sized mixing, carry out low intensity magnetic separation, low intensity magnetic separation comprises one-level and roughly selects and scan with one-level, low intensity magnetic separation magnetic field intensity is 0.15-0.3T, ore pulp mass concentration 10-30%, first carry out low intensity magnetic separation to roughly select, low intensity magnetic separation is roughly selected and is obtained low intensity magnetic separation rougher concentration and low intensity magnetic separation rougher tailings, carry out low intensity magnetic separation to low intensity magnetic separation rougher tailings to scan, low intensity magnetic separation is scanned and is obtained low intensity magnetic separation scavenger concentrate and mine tailing is scanned in low intensity magnetic separation, low intensity magnetic separation scavenger concentrate returns low intensity magnetic separation and roughly selects operation, mine tailing is scanned to low intensity magnetic separation and carries out flotation,
(3) flotation: scan mine tailing for raw material with low intensity magnetic separation, employing one-level is roughly selected, secondary is selected, secondary scans closed circuit flotation flowsheet, first join in rougher cell after low intensity magnetic separation mine tailing being sized mixing, stir, add adjusting agent successively, inhibitor and collecting agent, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and initial separatory cell, to roughly select froth pulp joins in first order cleaner cell, adjustment pulp density, stir, and add inhibitor and collecting agent successively, carry out the first order selected, the first order is selected obtains ore pulp in the selected froth pulp of the first order and first order cleaner cell, in first order cleaner cell, ore pulp returns and is added in initial separatory cell, the selected froth pulp of the first order joins in the cleaner cell of the second level, adjustment pulp density, stir, and add inhibitor and collecting agent successively, carry out the second level selected, the second level is selected obtains ore pulp in the selected froth pulp in the second level and second level cleaner cell, in the cleaner cell of the second level, ore pulp returns and is added in first order cleaner cell, the selected froth pulp in the second level is easily float mineral, join in first order scavenger flotation cell by roughly selecting ore pulp in the initial separatory cell that obtains, adjustment pulp density, stir, and add inhibitor and collecting agent successively, carry out the first order to scan, the first order is scanned and is obtained the first order and scan ore pulp in froth pulp and first order scavenger flotation cell, the first order is scanned froth pulp and is returned and be added in rougher cell, ore pulp in first order scavenger flotation cell is joined in the scavenger flotation cell of the second level, adjustment pulp density, stir, and add inhibitor and collecting agent successively, carry out the second level to scan, the second level is scanned scan ore pulp in froth pulp and second level scavenger flotation cell to the second level, the second level is scanned froth pulp and is returned and be added in first order scavenger flotation cell, in the scavenger flotation cell of the second level, ore pulp is the raw material of next step high intensity magnetic separation, flotation pulp mass concentration is 30-60%, slurry temperature is 25-45 DEG C, the pH of ore pulp is 8-10, floating agent addition adds by medicament and the mass ratio roughly selecting the weak magnetic added and scan mine tailing at every turn, 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 for raw material with the second level of flotation and carry out high intensity magnetic separation, magnetic field intensity is 0.5-0.9T, ore pulp mass concentration 5-30%, and the non magnetic ore that high intensity magnetic separation obtains is final scandium enriched substance.
Described Bayan Obo mine tailing is Baotou Steel's tailings storehouse stock's mine tailing or take baiyuneboite as mine tailing after raw material selects iron or selects rare earth for many years.
Described classification, its equipment adopted is the one in spiral classifier, water conservancy cyclone.
Described inhibitor is waterglass.
Described collecting agent is the one in oxidized paraffin wax soap, 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 in Bayan Obo mine tailing and composition, consider that in Bayan Obo mine tailing, scandium belongs to rare and scatter element, without the feature of single mineral, adopt the sorting flow process of low intensity magnetic separation-flotation-high intensity magnetic separation, as much as possible the mineral higher containing scandium being carried out enrichment on the one hand, also enough avoiding the loss that other valuable minerals containing a certain amount of scandium in Bayan Obo mine tailing cause because reclaiming scandium on the other hand.
First low intensity magnetic separation is adopted the strongly magnetic mineral in Bayan Obo mine tailing can be separated, also the effect removing residual medicament in mine tailing can be played, for further flotation creates good condition, adopt the lower high intensity magnetic separation in magnetic field while deviating from impurity, reclaiming as iron, niobium, the loss of scandium can be reduced as far as possible.
The present invention adopts fractionation beneficiation method, the control of strict science has been carried out to the index of whole technique and each ore-dressing practice, the simple science of technique, flow process is continuous, thus good technical indicator can be reached, while obtaining scandium enriched substance, by the further enrichment of other recoverable resource in Bayan Obo mine tailing.
Accompanying drawing explanation
Fig. 1 is process chart of the present invention.
Detailed description of the invention
embodiment 1
With the Bayan Obo mine tailing in Baotou Steel's tailings storehouse for raw material, this raw material is containing Sc after measured
2o
3200ppm, utilize technology sorting scandium enriched substance of the present invention, concrete steps are as Fig. 1:
(1) classification: carry out classification to Bayan Obo mine tailing, separates coarse grain ore with smitham, and the ball mill fine grinding of coarse grain ore in sand form, returns grader after mill, and smitham, as low intensity magnetic separation raw material, requires that smitham granularity-200 order accounts for more than 95%;
(2) low intensity magnetic separation: the smitham that-200 orders obtained classification account for more than 95% mass concentration of sizing mixing is after 12%, carry out low intensity magnetic separation, low intensity magnetic separation comprises one-level and roughly selects and scan with one-level, first carry out low intensity magnetic separation to roughly select, 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 rougher concentration and low intensity magnetic separation rougher tailings, carry out low intensity magnetic separation to low intensity magnetic separation rougher tailings to scan, 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 low intensity magnetic separation scavenger concentrate and mine tailing is scanned in low intensity magnetic separation, low intensity magnetic separation scavenger concentrate returns low intensity magnetic separation and roughly selects operation, mine tailing is scanned to low intensity magnetic separation and carries out flotation,
(3) flotation: scan mine tailing for raw material with low intensity magnetic separation, employing one-level is roughly selected, secondary is selected, secondary scans closed circuit flotation flowsheet, first join in rougher cell after low intensity magnetic separation mine tailing being sized mixing, stir, add waterglass and oxidized paraffin wax soap successively, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and initial separatory cell, to roughly select froth pulp joins in first order cleaner cell, adjustment pulp density, stir, and add waterglass and oxidized paraffin wax soap successively, carry out the first order selected, the first order is selected obtains ore pulp in the selected froth pulp of the first order and first order cleaner cell, in first order cleaner cell, ore pulp returns and is added in initial separatory cell, the selected froth pulp of the first order joins in the cleaner cell of the second level, adjustment pulp density, stir, and add waterglass and oxidized paraffin wax soap successively, carry out the second level selected, the second level is selected obtains ore pulp in the selected froth pulp in the second level and second level cleaner cell, in the cleaner cell of the second level, ore pulp returns and is added in first order cleaner cell, the selected froth pulp in the second level is easily float mineral, join in first order scavenger flotation cell by roughly selecting ore pulp in the initial separatory cell that obtains, adjustment pulp density, stir, and add waterglass and oxidized paraffin wax soap successively, carry out the first order to scan, the first order is scanned and is obtained the first order and scan ore pulp in froth pulp and first order scavenger flotation cell, the first order is scanned froth pulp and is returned and be added in rougher cell, ore pulp in first order scavenger flotation cell is joined in the scavenger flotation cell of the second level, adjustment pulp density, stir, and add waterglass and oxidized paraffin wax soap successively, carry out the second level to scan, the second level is scanned scan ore pulp in froth pulp and second level scavenger flotation cell to the second level, the second level is scanned froth pulp and is returned and be added in first order scavenger flotation cell, in the scavenger flotation cell of the second level, ore pulp is the raw material of next step high intensity magnetic separation, flotation collecting agent used is oxidized paraffin wax soap, flotation pulp mass concentration is 38%, slurry temperature is 32 DEG C, the pH of ore pulp is 9.2, floating agent addition adds by medicament and the mass ratio roughly selecting the weak magnetic added and scan mine tailing at every turn, 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, the second level is scanned: waterglass 0.2kg/t, oxidized paraffin wax soap 0.8kg/t.
(4) high intensity magnetic separation: scan mine tailing for raw material with the second time of flotation and carry out high intensity magnetic separation, 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 enriched substance.
After measured: Sc in scandium enriched substance
2o
3440ppm, the rate of recovery 65.5% of scandium.
embodiment 2
Select the Bayan Obo mine tailing after iron for raw material with Baogang Xi Kuang, this raw material is containing Sc after measured
2o
3180ppm, utilize technology sorting scandium enriched substance of the present invention, concrete steps are as Fig. 1:
(1) classification: carry out classification to Bayan Obo mine tailing, separates coarse grain ore with smitham, and the ball mill fine grinding of coarse grain ore in sand form, returns grader after mill, and smitham, as low intensity magnetic separation raw material, requires that smitham granularity-200 order accounts for more than 95%;
(2) low intensity magnetic separation: the smitham that-200 orders obtained classification account for more than 95% mass concentration of sizing mixing is after 15%, carry out low intensity magnetic separation, low intensity magnetic separation comprises one-level and roughly selects and scan with one-level, first carry out low intensity magnetic separation to roughly select, 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 rougher concentration and low intensity magnetic separation rougher tailings, carry out low intensity magnetic separation to low intensity magnetic separation rougher tailings to scan, 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 low intensity magnetic separation scavenger concentrate and mine tailing is scanned in low intensity magnetic separation, low intensity magnetic separation scavenger concentrate returns low intensity magnetic separation and roughly selects operation, mine tailing is scanned to low intensity magnetic separation and carries out flotation,
(3) flotation: scan mine tailing for raw material with low intensity magnetic separation, employing one-level is roughly selected, secondary is selected, secondary scans closed circuit flotation flowsheet, first join in rougher cell after low intensity magnetic separation mine tailing being sized mixing, stir, add waterglass and oxidized paraffin wax soap successively, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and initial separatory cell, to roughly select froth pulp joins in first order cleaner cell, adjustment pulp density, stir, and add waterglass and oxidized paraffin wax soap successively, carry out the first order selected, the first order is selected obtains ore pulp in the selected froth pulp of the first order and first order cleaner cell, in first order cleaner cell, ore pulp returns and is added in initial separatory cell, the selected froth pulp of the first order joins in the cleaner cell of the second level, adjustment pulp density, stir, and add waterglass and oxidized paraffin wax soap successively, carry out the second level selected, the second level is selected obtains ore pulp in the selected froth pulp in the second level and second level cleaner cell, in the cleaner cell of the second level, ore pulp returns and is added in first order cleaner cell, the selected froth pulp in the second level is easily float mineral, join in first order scavenger flotation cell by roughly selecting ore pulp in the initial separatory cell that obtains, adjustment pulp density, stir, and add waterglass and oxidized paraffin wax soap successively, carry out the first order to scan, the first order is scanned and is obtained the first order and scan ore pulp in froth pulp and first order scavenger flotation cell, the first order is scanned froth pulp and is returned and be added in rougher cell, ore pulp in first order scavenger flotation cell is joined in the scavenger flotation cell of the second level, adjustment pulp density, stir, and add waterglass and oxidized paraffin wax soap successively, carry out the second level to scan, the second level is scanned scan ore pulp in froth pulp and second level scavenger flotation cell to the second level, the second level is scanned froth pulp and is returned and be added in first order scavenger flotation cell, in the scavenger flotation cell of the second level, ore pulp is the raw material of next step high intensity magnetic separation, flotation institute with medicament is oxidized paraffin wax soap, flotation pulp mass concentration is 48%, slurry temperature is 44 DEG C, the pH of ore pulp is 9.6, floating agent addition adds by medicament and the mass ratio roughly selecting the weak magnetic added and scan mine tailing at every turn, 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, the second level is scanned: waterglass 0kg/t, oxidized paraffin wax soap 0.6kg/t.
(4) high intensity magnetic separation: scan mine tailing for raw material with the second time of flotation and carry out high intensity magnetic separation, 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 enriched substance.
After measured: Sc in scandium enriched substance
2o
3430ppm, the rate of recovery 65.1% of scandium.
embodiment 3
Select the Bayan Obo mine tailing after rare earth for raw material with Baogang, this raw material is containing Sc after measured
2o
3150ppm, utilize technology sorting scandium enriched substance of the present invention, concrete steps are as Fig. 1:
(1) classification: carry out classification to Bayan Obo mine tailing, separates coarse grain ore with smitham, and the ball mill fine grinding of coarse grain ore in sand form, returns grader after mill, and smitham, as low intensity magnetic separation raw material, requires that smitham granularity-200 order accounts for more than 95%;
(2) low intensity magnetic separation: the smitham that-200 orders obtained classification account for more than 95% mass concentration of sizing mixing is after 25%, carry out low intensity magnetic separation, low intensity magnetic separation comprises one-level and roughly selects and scan with one-level, first carry out low intensity magnetic separation to roughly select, 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 rougher concentration and low intensity magnetic separation rougher tailings, carry out low intensity magnetic separation to low intensity magnetic separation rougher tailings to scan, 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 low intensity magnetic separation scavenger concentrate and mine tailing is scanned in low intensity magnetic separation, low intensity magnetic separation scavenger concentrate returns low intensity magnetic separation and roughly selects operation, mine tailing is scanned to low intensity magnetic separation and carries out flotation,
(3) flotation: scan mine tailing for raw material with low intensity magnetic separation, employing one-level is roughly selected, secondary is selected, secondary scans closed circuit flotation flowsheet, first join in rougher cell after low intensity magnetic separation mine tailing being sized mixing, stir, add waterglass and oxidized paraffin wax soap successively, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and initial separatory cell, to roughly select froth pulp joins in first order cleaner cell, adjustment pulp density, stir, and add waterglass and oxidized paraffin wax soap successively, carry out the first order selected, the first order is selected obtains ore pulp in the selected froth pulp of the first order and first order cleaner cell, in first order cleaner cell, ore pulp returns and is added in initial separatory cell, the selected froth pulp of the first order joins in the cleaner cell of the second level, adjustment pulp density, stir, and add waterglass and oxidized paraffin wax soap successively, carry out the second level selected, the second level is selected obtains ore pulp in the selected froth pulp in the second level and second level cleaner cell, in the cleaner cell of the second level, ore pulp returns and is added in first order cleaner cell, the selected froth pulp in the second level is easily float mineral, join in first order scavenger flotation cell by roughly selecting ore pulp in the initial separatory cell that obtains, adjustment pulp density, stir, and add waterglass and oxidized paraffin wax soap successively, carry out the first order to scan, the first order is scanned and is obtained the first order and scan ore pulp in froth pulp and first order scavenger flotation cell, the first order is scanned froth pulp and is returned and be added in rougher cell, ore pulp in first order scavenger flotation cell is joined in the scavenger flotation cell of the second level, adjustment pulp density, stir, and add waterglass and oxidized paraffin wax soap successively, carry out the second level to scan, the second level is scanned scan ore pulp in froth pulp and second level scavenger flotation cell to the second level, the second level is scanned froth pulp and is returned and be added in first order scavenger flotation cell, in the scavenger flotation cell of the second level, ore pulp is the raw material of next step high intensity magnetic separation, flotation institute with medicament is oxidized paraffin wax soap, flotation pulp mass concentration is 32%, slurry temperature is 26 DEG C, the pH of ore pulp is 8.4, floating agent addition adds by medicament and the mass ratio roughly selecting the weak magnetic added and scan mine tailing at every turn, 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 0kg/t, oxidized paraffin wax soap 1.5kg/t, the second level is scanned: waterglass 0kg/t, oxidized paraffin wax soap 0.8kg/t.
(4) high intensity magnetic separation: scan mine tailing for raw material with the second time of flotation and carry out high intensity magnetic separation, 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 enriched substance.
After measured: Sc in scandium enriched substance
2o
3430ppm, the rate of recovery 65.3% of scandium.
embodiment 4
With the Bayan Obo mine tailing in Baotou Steel's tailings storehouse for raw material, this raw material is containing Sc after measured
2o
3180ppm, utilize technology sorting scandium enriched substance of the present invention, concrete steps are as Fig. 1:
(1) classification: carry out classification to Bayan Obo mine tailing, separates coarse grain ore with smitham, and the ball mill fine grinding of coarse grain ore in sand form, returns grader after mill, and smitham, as low intensity magnetic separation raw material, requires that smitham granularity-200 order accounts for more than 95%;
(2) low intensity magnetic separation: the smitham that-200 orders obtained classification account for more than 95% mass concentration of sizing mixing is after 18%, carry out low intensity magnetic separation, low intensity magnetic separation comprises one-level and roughly selects and scan with one-level, first carry out low intensity magnetic separation to roughly select, 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 rougher concentration and low intensity magnetic separation rougher tailings, carry out low intensity magnetic separation to low intensity magnetic separation rougher tailings to scan, 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 low intensity magnetic separation scavenger concentrate and mine tailing is scanned in low intensity magnetic separation, low intensity magnetic separation scavenger concentrate returns low intensity magnetic separation and roughly selects operation, mine tailing is scanned to low intensity magnetic separation and carries out flotation,
(3) flotation: scan mine tailing for raw material with low intensity magnetic separation, employing one-level is roughly selected, secondary is selected, secondary scans closed circuit flotation flowsheet, first join in rougher cell after low intensity magnetic separation mine tailing being sized mixing, stir, add waterglass and fatty acid sulfonate successively, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and initial separatory cell, to roughly select froth pulp joins in first order cleaner cell, adjustment pulp density, stir, and add waterglass and fatty acid sulfonate successively, carry out the first order selected, the first order is selected obtains ore pulp in the selected froth pulp of the first order and first order cleaner cell, in first order cleaner cell, ore pulp returns and is added in initial separatory cell, the selected froth pulp of the first order joins in the cleaner cell of the second level, adjustment pulp density, stir, and add waterglass and fatty acid sulfonate successively, carry out the second level selected, the second level is selected obtains ore pulp in the selected froth pulp in the second level and second level cleaner cell, in the cleaner cell of the second level, ore pulp returns and is added in first order cleaner cell, the selected froth pulp in the second level is easily float mineral, join in first order scavenger flotation cell by roughly selecting ore pulp in the initial separatory cell that obtains, adjustment pulp density, stir, and add waterglass and fatty acid sulfonate successively, carry out the first order to scan, the first order is scanned and is obtained the first order and scan ore pulp in froth pulp and first order scavenger flotation cell, the first order is scanned froth pulp and is returned and be added in rougher cell, ore pulp in first order scavenger flotation cell is joined in the scavenger flotation cell of the second level, adjustment pulp density, stir, and add waterglass and fatty acid sulfonate successively, carry out the second level to scan, the second level is scanned scan ore pulp in froth pulp and second level scavenger flotation cell to the second level, the second level is scanned froth pulp and is returned and be added in first order scavenger flotation cell, in the scavenger flotation cell of the second level, ore pulp is the raw material of next step high intensity magnetic separation, flotation collecting agent used is fatty acid sulfonate, flotation pulp mass concentration is 32%, slurry temperature is 45 DEG C, the pH of ore pulp is 9.9, floating agent addition adds by medicament and the mass ratio roughly selecting the weak magnetic added and scan mine tailing at every turn, 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, the second level is scanned: waterglass 0.4kg/t, oxidized paraffin wax soap 1.2kg/t.
(4) high intensity magnetic separation: scan mine tailing for raw material with the second time of flotation and carry out high intensity magnetic separation, 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 enriched substance.
After measured: Sc in scandium enriched substance
2o
3460ppm, the rate of recovery 65.2% of scandium.
embodiment 5
With the Bayan Obo mine tailing in Baotou Steel's tailings storehouse for raw material, this raw material is containing Sc after measured
2o
3220ppm, utilize technology sorting scandium enriched substance of the present invention, concrete steps are as Fig. 1:
(1) classification: carry out classification to Bayan Obo mine tailing, separates coarse grain ore with smitham, and the ball mill fine grinding of coarse grain ore in sand form, returns grader after mill, and smitham, as low intensity magnetic separation raw material, requires that smitham granularity-200 order accounts for more than 95%;
(2) low intensity magnetic separation: the smitham that-200 orders obtained classification account for more than 95% mass concentration of sizing mixing is after 16%, carry out low intensity magnetic separation, low intensity magnetic separation comprises one-level and roughly selects and scan with one-level, first carry out low intensity magnetic separation to roughly select, 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 rougher concentration and low intensity magnetic separation rougher tailings, carry out low intensity magnetic separation to low intensity magnetic separation rougher tailings to scan, 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 low intensity magnetic separation scavenger concentrate and mine tailing is scanned in low intensity magnetic separation, low intensity magnetic separation scavenger concentrate returns low intensity magnetic separation and roughly selects operation, mine tailing is scanned to low intensity magnetic separation and carries out flotation,
(3) flotation: scan mine tailing for raw material with low intensity magnetic separation, employing one-level is roughly selected, secondary is selected, secondary scans closed circuit flotation flowsheet, first join in rougher cell after low intensity magnetic separation mine tailing being sized mixing, stir, add waterglass and fatty acid sulfonate successively, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and initial separatory cell, to roughly select froth pulp joins in first order cleaner cell, adjustment pulp density, stir, and add waterglass and fatty acid sulfonate successively, carry out the first order selected, the first order is selected obtains ore pulp in the selected froth pulp of the first order and first order cleaner cell, in first order cleaner cell, ore pulp returns and is added in initial separatory cell, the selected froth pulp of the first order joins in the cleaner cell of the second level, adjustment pulp density, stir, and add waterglass and fatty acid sulfonate successively, carry out the second level selected, the second level is selected obtains ore pulp in the selected froth pulp in the second level and second level cleaner cell, in the cleaner cell of the second level, ore pulp returns and is added in first order cleaner cell, the selected froth pulp in the second level is easily float mineral, join in first order scavenger flotation cell by roughly selecting ore pulp in the initial separatory cell that obtains, adjustment pulp density, stir, and add waterglass and fatty acid sulfonate successively, carry out the first order to scan, the first order is scanned and is obtained the first order and scan ore pulp in froth pulp and first order scavenger flotation cell, the first order is scanned froth pulp and is returned and be added in rougher cell, ore pulp in first order scavenger flotation cell is joined in the scavenger flotation cell of the second level, adjustment pulp density, stir, and add waterglass and fatty acid sulfonate successively, carry out the second level to scan, the second level is scanned scan ore pulp in froth pulp and second level scavenger flotation cell to the second level, the second level is scanned froth pulp and is returned and be added in first order scavenger flotation cell, in the scavenger flotation cell of the second level, ore pulp is the raw material of next step high intensity magnetic separation, flotation collecting agent used is fatty acid sulfonate, flotation pulp mass concentration is 55%, slurry temperature is 40 DEG C, the pH of ore pulp is 9.5, floating agent addition adds by medicament and the mass ratio roughly selecting the weak magnetic added and scan mine tailing at every turn, 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, the second level is scanned: waterglass 0kg/t, oxidized paraffin wax soap 1.0kg/t.
(4) high intensity magnetic separation: scan mine tailing for raw material with the second time of flotation and carry out high intensity magnetic separation, 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 enriched substance.
After measured: Sc in scandium enriched substance
2o
3440ppm, the rate of recovery 65.1% of scandium.
Last it is noted that obviously, above-described embodiment is only for example of the present invention is clearly described, and the restriction not 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 exhaustive without the need to also giving all embodiments.And thus the apparent change of amplifying out or variation be still among protection scope of the present invention.
Claims (5)
1. Bayan Obo mine tailing selects a scandium method, it is characterized in that, it adopts following steps:
(1) classification: carry out classification to Bayan Obo mine tailing, separates coarse grain ore with smitham, and the ball mill fine grinding of coarse grain ore, returns grader after mill, and smitham, as low intensity magnetic separation raw material, requires that smitham granularity-200 order accounts for more than 95%;
(2) low intensity magnetic separation: after the smitham that-200 orders obtained classification account for more than 95% is sized mixing, carry out low intensity magnetic separation, low intensity magnetic separation comprises one-level and roughly selects and scan with one-level, low intensity magnetic separation magnetic field intensity is 0.15-0.3T, ore pulp mass concentration 10-30%, first carry out low intensity magnetic separation to roughly select, low intensity magnetic separation is roughly selected and is obtained low intensity magnetic separation rougher concentration and low intensity magnetic separation rougher tailings, carry out low intensity magnetic separation to low intensity magnetic separation rougher tailings to scan, low intensity magnetic separation is scanned and is obtained low intensity magnetic separation scavenger concentrate and mine tailing is scanned in low intensity magnetic separation, low intensity magnetic separation scavenger concentrate returns low intensity magnetic separation and roughly selects operation, mine tailing is scanned to low intensity magnetic separation and carries out flotation,
(3) flotation: scan mine tailing for raw material with low intensity magnetic separation, employing one-level is roughly selected, secondary is selected, secondary scans closed circuit flotation flowsheet, first low intensity magnetic separation being scanned after mine tailing is sized mixing joins in rougher cell, stir, add adjusting agent successively, inhibitor and collecting agent, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and rougher cell, to roughly select froth pulp joins in first order cleaner cell, adjustment pulp density, stir, and add inhibitor and collecting agent successively, carry out the first order selected, the first order is selected obtains ore pulp in the selected froth pulp of the first order and first order cleaner cell, in first order cleaner cell, ore pulp returns and is added in rougher cell, the selected froth pulp of the first order joins in the cleaner cell of the second level, adjustment pulp density, stir, and add inhibitor and collecting agent successively, carry out the second level selected, the second level is selected obtains ore pulp in the selected froth pulp in the second level and second level cleaner cell, in the cleaner cell of the second level, ore pulp returns and is added in first order cleaner cell, the selected froth pulp in the second level is easily float mineral, join in first order scavenger flotation cell by roughly selecting ore pulp in the rougher cell that obtains, adjustment pulp density, stir, and add inhibitor and collecting agent successively, carry out the first order to scan, the first order is scanned and is obtained the first order and scan ore pulp in froth pulp and first order scavenger flotation cell, the first order is scanned froth pulp and is returned and be added in rougher cell, ore pulp in first order scavenger flotation cell is joined in the scavenger flotation cell of the second level, adjustment pulp density, stir, and add inhibitor and collecting agent successively, carry out the second level to scan, the second level is scanned scan ore pulp in froth pulp and second level scavenger flotation cell to the second level, the second level is scanned froth pulp and is returned and be added in first order scavenger flotation cell, in the scavenger flotation cell of the second level, ore pulp is the raw material of next step high intensity magnetic separation, flotation pulp mass concentration is 30-60%, slurry temperature is 25-45 DEG C, the pH of ore pulp is 8-10, floating agent addition adds by medicament and the mass ratio roughly selecting the low intensity magnetic separation added and scan mine tailing at every turn, 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: with ore pulp in the second level scavenger flotation cell of flotation for raw material carries out high intensity magnetic separation, magnetic field intensity is 0.5-0.9T, ore pulp mass concentration 5-30%, the non magnetic ore that high intensity magnetic separation obtains is final scandium enriched substance.
2. a kind of Bayan Obo mine tailing according to claim 1 selects scandium method, it is characterized in that: described Bayan Obo mine tailing is Baotou Steel's tailings storehouse stock's mine tailing or take baiyuneboite as mine tailing after raw material selects iron or selects rare earth for many years.
3. a kind of Bayan Obo mine tailing according to claim 1 selects scandium method, it is characterized in that: described classification, and its equipment adopted is the one in spiral classifier, water conservancy cyclone.
4. a kind of Bayan Obo mine tailing according to claim 1 selects scandium method, it is characterized in that: described inhibitor is waterglass.
5. a kind of Bayan Obo mine tailing according to claim 1 selects scandium method, it is characterized in that: described collecting agent is the one in oxidized paraffin wax soap, fatty acid sulfonate.
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| US9409185B2 (en) * | 2014-04-17 | 2016-08-09 | General Electric Company | Systems and methods for recovery of rare-earth constituents from environmental barrier coatings |
| CN106799300B (en) * | 2016-12-15 | 2019-09-17 | 江苏旌凯中科超导高技术有限公司 | A kind of beneficiation method of Rare Earth Mine |
| 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 |
| CN109078740B (en) * | 2018-08-15 | 2020-11-03 | 浙江天磨矿业科技有限公司 | Spodumene ore grinding method |
| CN111841883A (en) * | 2020-07-31 | 2020-10-30 | 攀钢集团矿业有限公司 | Strong magnetic separation method of ilmenite |
| CN113843183B (en) * | 2021-10-11 | 2023-07-14 | 内蒙古宏鉮科技发展有限责任公司 | Fluorite sorting method for Baiyunebo 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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