CN101219412A - Technique for separating mineral from weak magnetic separation iron tail sand - Google Patents
Technique for separating mineral from weak magnetic separation iron tail sand Download PDFInfo
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- CN101219412A CN101219412A CNA2007100172154A CN200710017215A CN101219412A CN 101219412 A CN101219412 A CN 101219412A CN A2007100172154 A CNA2007100172154 A CN A2007100172154A CN 200710017215 A CN200710017215 A CN 200710017215A CN 101219412 A CN101219412 A CN 101219412A
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Abstract
The invention relates to a method used for separating minerals from weak magnetic iron tails, which is divided into six stages: primary sorting of strong magnetic minerals, separation of strong magnetic minerals, separation of weak magnetic minerals, separation of non-magnetic minerals, treatment of ore pulp water during the ore dressing process and treatment of finish tail sand. According to the magnetic susceptibility differences, specific gravitydifferences and floating differeces between minerals, magnetite, vanadium titano-magnetite, mixed ore of apatite and xenotime and hematite feldspar concentrate can be separated from the weak magnetic iron by using techniques of crude separation with a strong magnetic separator, refine separation with a weak magnetic separator, gravity separation, floatation, electric separation, etc. The method has advantages of standard production technique, low cost for industrialized production, great variety of separated minerals, stable quality and high separating efficiency, thereby having significant social and economic benefits.
Description
Affiliated technical field
The technology of separating mineral belongs to the reutilization technology of mineral resources from the tailings of weak magnetic separation iron.
Background technology
A large amount of tailings of output generally are underutilized in China's magnetic iron ore weak magnetic separation iron process, all with the industrial residue waste treatment.Contain a large amount of valuable minerals in the discarded tailings, the village, Shaanxi Province's Hancheng City Yangshan magnetic iron ore for example, the tailings screening test of weak magnetic beneficiation machine sorting, one section is milled to the 0.76mm granularity, two sections levigate 0.043mm granularities, at 1500Oe, 2500Oe two-stage low intensity magnetic separation machine is selected magnetic iron ore, vanadium titano-magnetite is respectively tailings total amount 5-8%, 5-6%, the weak magnetic machine choosing of two-stage back residue mineral are used high intensity magnetic separation again, flotation, gravity treatment, electric separation, select mineral be apatite, the brown iron of red iron mixes concentrate, the zircon barite mixes concentrate, feldspar concentrate is respectively 4% of a tailings content, 12%, 3-5%, 35-37%, the tailings development and use of magnetic iron ore weak magnetic separation iron have certain economic and are worth and social benefit.
Summary of the invention:
The objective of the invention is: provide a kind of from the tailings of magnetic iron ore weak magnetic separation iron the technology of separating mineral, can from magnet weak magnetic separation iron tailings, isolate magnetic iron ore, vanadium titano-magnetite, apatite phosphorus yttrium stone and mix that concentrate, the brown iron of red iron mix the ore deposit, the zircon barite mixes concentrate, feldspar concentrate.
In order to realize the purpose of foregoing invention, the technical solution adopted in the present invention is: separating mineral from the tailings of weak magnetic separation iron, be specific susceptibility difference according to each quasi-mineral, difference of specific gravity, the difference of swimming, electric conductivity difference, with screening, ore grinding, strong magnetic roughly select, weak magnetic is selected, flotation, gravity treatment, electric separation are major measure, its technology is divided into strong magnetic and roughly selects, separates strongly magnetic mineral, the weak magnetic mineral of separation, the non-magnetic mineral of separation and the processing of ore dressing process chats pulp-water, finality sand six stages of processing, at first, separate 5cm weak naturally magnetic tail sand sieve branch
3Above ore particle and foreign material get 5cm
3The tailings of following grade is in the input material storage jar; Tailings water in the head tank is made into 1: 3 ore pulp of solid-to-liquid ratio, sends into grinding machine, the ore pulp input raw material that is milled to the 0.074mm particle size fraction stirs in the conservation tank; The ore pulp in the raw material stirring conservation tank, under flowmeter control, send into the strong magnetic ore separation machine sorting, get ferromagnetism crude product ore pulp, weak magnetic crude product ore pulp, non magnetic crude product ore pulp; Three kinds of crude product ore pulps store up stirring respectively and stock in the jar; Send into the magnetic separation of 1500Oe magnetic separator storing the ferromagnetism flowsheet of slurry agitation after evenly, magnetic iron ore, divide the ore pulp behind the magnetite to flow into the sorting of 2500Oe magnetic separator, vanadium titano-magnetite; The weak magnetic crude product ore pulp conservation tank of ore pulp input after the two-stage magnetic separation; Store weak magnetic crude product flowsheet of slurry agitation evenly after, in the input batching agitator tank, add floating agent sodium carbonate allotment ore pulp PH=9-10, by 1: 5 flowsheet of slurry agitation of solid-to-liquid ratio evenly after, under flowmeter control, the flotation of input multiple cell floatation machine gets apatite phosphorus yttrium stone mixing ore deposit; Ore pulp input after the flotation is stirred in the material-compound tank; Flowsheet of slurry agitation after the flotation is evenly imported gravity concentrator in the back under flowmeter control, heavy mineral is got in gravity treatment, is that hematite and limonite mixes concentrate; The light ore pulp of telling enters the tailings sedimentation basin and discards; Have non magnetic crude product flowsheet of slurry agitation evenly after, under flowmeter control, send into the ore pulp that two sections grinding machines are milled to the 0.043mm particle size fraction, send in the 0.043mm particle size fraction conservation tank; The flowsheet of slurry agitation in the storage 0.043mm storage tank evenly after, under flowmeter control, send into the strong magnetic machine of high gradient and scan, separate the weakly magnetic mineral slurry that draws, be pumped in the weak magnetic crude product ore pulp jar with ore pulp; The clean non magnetic ore pulp that sorting gets is imported clean non magnetic deposit agitator tank, and the back input gravimetric concentrator that stirs gravity treatment gets the zircon barite and mixes the ore deposit; The light ore pulp of telling is sent into and is filtered in the conservation tank; Evenly the filter press press filtration is sent in the back under flowmeter control, filtrate enters sedimentation basin and abandons it the flowsheet of slurry agitation in the filtration conservation tank, filter cake is sent into drying oven, dry to water content and send in the fine ore conservation tank after less than 1% fine ore, under quantifier control, dry powder is sent into electric separation to be separated, what the conductance of sorting was low is quartzy, and the mineral that conductance is high are feldspar concentrates.
The invention has the beneficial effects as follows: the production technology standard, industrial production cost is low, can low-cost sorting multi mineral, grade is stablized the productive rate height.Per 1000 tons of tailings can be got magnetic iron ore 80-85 ton, vanadium titano-magnetite 55-60 ton, and apatite phosphorus yttrium mixes concentrate 40-45 ton, feldspar concentrate 300-350 ton, the output value per ton be greater than 250 yuan, 65 yuan of cost less thaies, input and the output value be than more than 1: 3.5, remarkable in economical benefits.
Specific embodiments
One, processing facility (water, electricity, gas indispensability).
1, organize more storage tank, join agitator.
2, many groups stir material-compound tank, are equipped with metering device.
3, multi stage precipitation circulatory pool.
4, material storage storehouse.
5, floating agent dissolving tank (joining agitator).
Two, capital equipment
1, vibratory sieve.
2, the grader of two vertical agitator mill coupling kerbs hydrocyclones, the granularity monitor.
3, CHDH type intensity magnetic separator.
4, multiple-grooved level flotation device.
5, ore pulp pump.
6, SL-600 type, SL-1200 type jet and centrifugal ore separators.
7, ZYZ-type ore deposit filter.
8, the strong magnetic machine of the two upright ring pulsating high gradients of SLON-1500 type.
9, board-like combination electrode electrostatic separator (voltage＞65KV).
10, dryer.
11, floating agent, flow controller, PH instrument controller.
Three, floating agent and consumption
| The medicament title | Consumption g/t | Purposes |
| H205 | 1700 | Collecting agent |
| J102 | 150 | Foaming agent |
| Prodan | 700 | Activator |
| Waterglass | 1000 | Inhibitor |
Annotate: matching while using, sodium carbonate pulvis are made into 10% solution adjustment pH value.Alkaline media liquid is PH=9-10.
Four, the assorting room of tailings
One, roughly selects separation
1, screening: magnetic tailings a little less than the nature in the raw material warehouse under quantifier control, is dropped into vibratory sieve slowly, and screening will be greater than 5cm
3The ore in sand form of particle size fraction is discarded, get less than 5cm
3The particle size fraction tailings is sent in the material storage jar by belt conveyer.
2, first section ore grinding:
The tailings in the material storage jar, under quantifier control, the input material-compound tank, under flowmeter control, add water purification to material-compound tank and be made into 1: 3 ore pulp of solid-to-liquid ratio, under flowmeter control, import grinding machine slowly, Krebs cyclone classification under the particle size analyzer monitoring, be milled to the mortar of 0.074mm granularity, enter in the 0.074mm particle size fraction conservation tank.
3, strong magnetic machine is roughly selected separation:
The ore pulp in the granularity 0.074mm particle size fraction conservation tank, after stirring, the sorting of the strong magnetic machine of input CHDH type gets ferromagnetism crude product ore pulp, the non magnetic crude product ore pulp of weak magnetic crude product ore pulp under flowmeter control.Three kinds of ore pulps of sorting are sent in the conservation tank respectively.
Two, sorting ferromagnetism crude product ore pulp
1, sorting magnet: deposit ferromagnetism crude product ore pulp, after stirring, the sorting of input 1500Oe magnetic separator gets the magnetite concentrate slurry under flowmeter control, sends into filter press, press filtration with ore pulp, and filtrate enters sedimentation basin, and filter cake is a magnetite concentrate.
2, sorting vanadium titano-magnetite: from the residue ore pulp of 1500Oe magnetic separator sorting, flow into the sorting of 2500Oe magnetic separator, get the v-ti magnetite ore pulp, be pumped into the filter press press filtration with ore pulp, filtrate enters sedimentation basin, and filter cake is a v-ti magnetite concentrate; Residue ore pulp after the two-stage magnetic separation is pumped in the weak magnetic crude product conservation tank by ore pulp.
Three, the ore pulp of the weak magnetic crude product of sorting
1, flotation, apatite phosphorus yttrium stone mixing ore deposit:
The crude product flowsheet of slurry agitation of the weak magnetic of deposit evenly after, under flowmeter control, import material-compound tank, under flowmeter control, in material-compound tank, add water, under flowmeter control, add sodium carbonate liquor simultaneously, the flotation soup, the ore pulp of furnishing solid-to-liquid ratio 1: 5PH=9-11, after stirring, import flotation device under flowmeter control, sweep four flotation through one thick three, froth pulp is with the water purification washing of five times of products on the groove of flotation device, ore pulp after the washing is sent into the filter press press filtration, filtrate enters sedimentation basin, and filter cake is an apatite phosphorus yttrium stone bulk concentrate, and ore pulp is with in the ore pulp pump input gravity treatment conservation tank under the flotation trough.
2, gravity treatment is told hematite and limonite and is mixed the ore deposit:
The flowsheet of slurry agitation in the gravity treatment conservation tank evenly after, under flowmeter control, send into the gravity treatment of SL-1500 type centrifugal reselection machine, select heavy mineral be the brown mixed ore pulp of red iron, enter sedimentation basin through filter press press filtration, filtrate, filter cake is that hematite and limonite mixes concentrate; The light mineral ore pulp that gravity treatment separates enters finality sand sedimentation basin.
Four, separate non magnetic ore matter crude product ore pulp
1, second section ore grinding:
The nonmagnetic crude product flowsheet of slurry agitation of deposit evenly after, under flowmeter control, import vertical agitator mill, under the particle size analyzer monitoring, be milled to the ore pulp of 0.043mm, in the conservation tank of input 0.043mm granularity.
2, the strong magnetic machine of high gradient is scanned remaining weak magnetic mineral:
The ore pulp of deposit 0.043mm particle size fraction, the sorting of high gradient strong magnetic ore separation machine is imported slowly in the back that stirs under flowmeter control, get the weakly magnetic mineral slurry, is transported to the ore pulp pump in the crude product conservation tank of weak magnetic.The clean non magnetic ore pulp that high intensity magnetic separation is got is used the ore pulp pump, is transported in the clean non magnetic conservation tank.
3, gravity treatment separates zircon barite bulk concentrate:
The input SL type centrifugal reselection machine gravity treatment under flowmeter control of the even back of the clean non magnetic flowsheet of slurry agitation of deposit is separated, and the heavy mineral ore pulp of selecting is the mixed ore pulp of zircon barite, by ore pulp pump input filter press, press filtration, filtrate enters sedimentation basin, and filter cake is a zircon barite bulk concentrate; The light ore pulp that gravity treatment divides is imported in the light ore pulp slurry conservation tank by the ore pulp pump.
4, filter, dry:
The light ore pulp of deposit, stir the back under flowmeter is controlled, the input filter filters, and filtrate enters sedimentation basin, and filter cake is sent into drying oven oven dry to moisture dry powder less than 1% and is imported in the dry powder conservation tank.
5, electric separation separates:
In the storage tank of deposit dry powder, under measure control, import plate electrostatic separator slowly, electric separation is isolated the quartzy feldspar concentrate that gets.Feldspar concentrate powder input finished product jar, under measure control, pack, silica flour is sent into storage pad.
Five, weak magnetic is selected the processing of muddy liquid in the process of iron milltailings sorting mined material
Come together in pressing filtering liquid in the sedimentation basin, cleaning solution and flotation cleaning solution, all contain the microsize grade ore particle, constitute muddy slurries, adopt starch, the carboxymethyl cellulose cohesion, precipitation, the hypostasis isolated by filtration, filtrate cycle is used, and filter cake is sent into unburned brick field.
Six, finality sand is handled
Ore dressing process is emitted on the ore pulp in the sedimentation basin, and the clarified solution of post precipitation precipitates with pump input circulatory pool cycling and reutilization sediment press filtration rear filtrate again, and filter cake is also sent into unburned brick field utilization.
Claims (1)
1. the technology of a separating mineral from the tailings of magnetic iron ore weak magnetic separation iron is characterized in that:
At first, separate 5cm weak naturally magnetic tail sand sieve branch
3Above ore particle and foreign material get 5cm
3The tailings of following grade is in the input material storage jar; Tailings water in the head tank is made into 1: 3 ore pulp of solid-to-liquid ratio, sends into grinding machine, the ore pulp input raw material that is milled to the 0.074mm particle size fraction stirs in the conservation tank; The ore pulp in the raw material stirring conservation tank, under flowmeter control, send into the strong magnetic ore separation machine sorting, get ferromagnetism crude product ore pulp, weak magnetic crude product ore pulp, non magnetic crude product ore pulp, three kinds of crude product ore pulps store up stirring respectively and stock in the jar; Send into the magnetic separation of 1500Oe magnetic separator storing the ferromagnetism flowsheet of slurry agitation after evenly, magnetic iron ore, divide the ore pulp behind the magnetite to flow into the sorting of 2500Oe magnetic separator, vanadium titano-magnetite, the weak magnetic crude product ore pulp conservation tank of ore pulp input after the two-stage magnetic separation; Store weak magnetic crude product flowsheet of slurry agitation evenly after, in the input batching agitator tank, add floating agent sodium carbonate allotment ore pulp PH=9-10, by 1: 5 flowsheet of slurry agitation of solid-to-liquid ratio evenly after, under flowmeter control, the flotation of input multiple cell floatation machine gets apatite phosphorus yttrium stone mixing ore deposit, and the ore pulp input after the flotation is stirred in the material-compound tank; Flowsheet of slurry agitation after the flotation is evenly imported gravity concentrator in the back under flowmeter control, heavy mineral is got in gravity treatment, is that hematite and limonite mixes concentrate, and the light ore pulp of telling enters the tailings sedimentation basin and discards; Have non magnetic crude product flowsheet of slurry agitation evenly after, under flowmeter control, send into the ore pulp that two sections grinding machines are milled to the 0.043mm particle size fraction, send in the 0.043mm particle size fraction conservation tank; The flowsheet of slurry agitation in the storage 0.043mm storage tank evenly after, under flowmeter control, send into the strong magnetic machine of high gradient and scan, separate the weakly magnetic mineral slurry that draws, be pumped in the weak magnetic crude product ore pulp jar with ore pulp; The clean non magnetic ore pulp that sorting gets is imported clean non magnetic deposit agitator tank, and the back input gravimetric concentrator that stirs gravity treatment gets the zircon barite and mixes the ore deposit; The light ore pulp of telling is sent into and is filtered in the conservation tank; Evenly the filter press press filtration is sent in the back under flowmeter control, filtrate enters sedimentation basin and abandons it the flowsheet of slurry agitation in the filtration conservation tank, filter cake is sent into drying oven, dry to water content and send in the fine ore conservation tank after less than 1% fine ore, under quantifier control, dry powder is sent into electric separation to be separated, what the conductance of sorting was low is quartzy, and the mineral that conductance is high are feldspar concentrates.
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| CNA2007100172154A CN101219412A (en) | 2007-01-10 | 2007-01-10 | Technique for separating mineral from weak magnetic separation iron tail sand |
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|---|---|---|---|
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| CN102319614A (en) * | 2011-06-20 | 2012-01-18 | 米建国 | Benefication method for recovering ilmenite from iron tailings in Shandong area |
| CN102343303A (en) * | 2011-08-15 | 2012-02-08 | 中陕金属矿业有限公司 | Method for separating ferro-silicon-aluminum products and vanadium-titanium-iron products from aluminum-vanadium-titanium-iron-silicon composite paragenetic minerals by adopting gradient magnetic separation process |
| CN102489387A (en) * | 2011-12-21 | 2012-06-13 | 鞍钢集团矿业设计研究院 | Extremely lean magnetite beneficiating process |
| CN102580844A (en) * | 2012-02-16 | 2012-07-18 | 中南大学 | Method for improving grade of magnetic concentrate by using reagent |
| CN102773150A (en) * | 2011-05-12 | 2012-11-14 | 云南锡业集团（控股）有限责任公司 | Polymetallic (iron, tin and zinc) ore comprehensive recovery beneficiation method |
| WO2012159342A1 (en) * | 2011-05-26 | 2012-11-29 | 山东乾舜矿冶科技股份有限公司 | Process for extracting iron from high silicon alumohematite |
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