CN101898168B - Beneficiation method for removing long quarry impurities by adopting strong magnetic flotation - Google Patents
Beneficiation method for removing long quarry impurities by adopting strong magnetic flotation Download PDFInfo
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- CN101898168B CN101898168B CN 201010241793 CN201010241793A CN101898168B CN 101898168 B CN101898168 B CN 101898168B CN 201010241793 CN201010241793 CN 201010241793 CN 201010241793 A CN201010241793 A CN 201010241793A CN 101898168 B CN101898168 B CN 101898168B
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Abstract
The invention relates to a beneficiation method for removing long quarry impurities by adopting strong magnetic flotation, comprising the steps of crushing, grinding, sieving, desliming, strong magnetically floating, floating, concentrating and dewatering. The concrete beneficiation method comprises the following steps of: breaking and grinding ore in a ball mill; grading ground minerals by a spiral grader and a hydraulic hydrocyclone twice; combining with the ball mill into a closed cycle; respectively mounting high-frequency linear vibration sieves in overflows graded twice; respectively removing impurities over 3 mm and 1 mm, such as mica, grass-roots bark, and the like; removing most of muddy substances from minerals through desliming equipment after the impurities are removed; removing mechanical iron, weakly magnetic iron ore, tourmaline and partial mica in a strong magnetic flotation machine; floating the minerals passing through the strong magnetic flotation machine again to remove residual iron minerals, mica and black minerals; and finally, concentrating and dewatering the minerals to form a product.
Description
Technical field
The present invention relates to a kind of beneficiation method, particularly a kind of beneficiation method that adopts strong magnetic flotation to remove long quarry impurities.
Background technology
Feldspar is widely used in the industry such as pottery, glass, enamel, chemical industry, cement, abrasive material, papermaking, refractory material, machine-building, coating and welding rod.Along with the raising of the industrial high speed development of China and living standards of the people, also increasing to the demand of feldspar.But the nonmetal feldspar mine of China all is that to sell raw ore be main for a long time, mining type then be eat richness abandon poor, particularly to those contain potassium, the sodium grade then be nobody shows any interest in than the end, impure more feldspar ore.Process though there is in recent years the mine that raw ore has been carried out simple processing, at most also only increased by one section strong magnetic technological process, make Fe
2O
3Content from being down to 0.2～0.3% more than 0.5%, the whiteness of its product also can only reach 40～50%.
Summary of the invention
The objective of the invention is to overcome the above-mentioned deficiency of prior art and a kind of beneficiation method that adopts strong magnetic flotation to remove long quarry impurities is provided.
Technical scheme of the present invention is: a kind of beneficiation method that adopts strong magnetic flotation to remove long quarry impurities, and it comprises: fragmentation-ball milling-screening-desliming-strong magnetic-flotation-thickening, its concrete beneficiation method is as follows:
A, raw ore enter double-deck vibrating sieving machine through one-level jaw crushing crusher machine is laggard, the raw ore that reaches the ball milling standard after the fragmentation enters the ball mill ore grinding, underproof raw ore enters respectively secondary jaw crusher and gyratory crusher continuation fragmentation from double-deck vibrating sieving machine, enter and enter gyratory crusher after the raw ore F fragmentation of secondary jaw crusher and continue broken, raw ore in gyratory crusher after the fragmentation enters double-deck vibrating sieving machine again, enters the ball mill ore grinding after reaching the ball milling standard again.
B, enter the spiral classifier classification from ball mill mineral out, ball mill continuation ore grinding is returned in classification out underproof mineral, qualified mineral enter one-level high frequency linear vibrating sieving machine, the impurity that overflows from one-level high frequency linear vibrating sieving machine enters tailing dam, mineral enter hydrocyclone, return ball mill from hydrocyclone sand setting out, the mineral that overflow from hydrocyclone enter secondary high frequency linear vibrating sieving machine.
C, mineral out enter afterwards desliming device from secondary high frequency linear vibrating sieving machine and carry out desliming, then enter the degaussing of high gradient Wet-type strong magnetic separator, and the mineral after the degaussing enter high efficiency stirring tank adding petroleum sodium sulfonate and stir.Enter tailing dam from secondary high frequency linear vibrating sieving machine, desliming device and high gradient Wet-type strong magnetic separator impurity out.
Mineral after D, the stirring enter the one-level flotation device and carry out Removal of iron with flotation, then entering lifting agitation tank adding lauryl amine stirs, mineral after the stirring enter the secondary floatation machine and roughly select, remove the mica in the mineral, the mineral of roughly selecting out enter three grades of flotation devices again and scan, and enter tailing dam from one-level, secondary, three grades of flotation devices impurity out.
E, the mineral of scanning out from three grades of flotation devices enter the enrichment facility thickening, then enter to form product after filter filters.The backwater that overflows from enrichment facility and filter returns tank.
Add petroleum sodium sulfonate in the flotation, its effect is better deironing, and consumption mineral per ton are 250～400 grams.Add lauryl amine in the flotation, its effect is better to remove mica and dark colour mineral, and consumption mineral per ton are 200～400 grams.
Flotation operation of the present invention carries out in weak acidic medium, and floatation process has added a small amount of sulfuric acid, and consumption mineral per ton are 100～200 grams, and pH value is controlled in 4～5 the scope.
The whole Returning utilizations of industrial water of the present invention, the water after returning is with after the new water that adds mixes, and its pH value is about 6.5, is close with neutral water.
The present invention compared with prior art has following features:
1, adopts the ball mill ore grinding, broken the forbidden zone of nonmetallic ore without the steel ball ore grinding.Ball mill is to use very general equipment in the ore dressing plant of the industries such as non-ferrous metal, ferrous metal, noble metal, and its production capacity is large, grinding efficiency is high, convenient operation and management, can produce continuously.Although ball mill produces some mechanical iron in grinding process, the present invention adopts magnetic plant in subsequent job, mechanical iron can be removed fully.
2, adopt the high frequency linear vibratory sieve, can remove the above large mica splitting of 3mm and bark and grass roots and the above mica of 1mm.The present invention has installed a high frequency linear vibratory sieve in the spiral classifier overflow, a high frequency linear vibratory sieve also has been installed in the hydrocyclone overflow, thereby can remove as early as possible 1mm above mica and turf tree root.
3, adopt desliming device, removed most of shale thing.The present invention has installed two desliming devices, in the overflow of desliming device, and Fe
2O
3Content reach more than 1%, its occupation rate reaches more than 40%, so desliming device not only removed the shale thing of iron content, and has created good condition for the subsequent job flotation.
4, adopt the high gradient Wet-type strong magnetic separator, deironing is played an important role.Wet-type strong magnetic separator not only can be removed mechanical iron, and can remove tourmaline and other weak magnetic iron-bearing mineral, such as limonite, speculum iron, biotite etc.
5, adopt floatation process and interpolation the most efficient flotation reagents, can remove mica, various dark colour mineral and iron-bearing mineral, to guaranteeing product quality, improve product whiteness and played critical effect.
6, industrial water is all recycling, tailing filtration, and dried slag muck is put, and has accomplished zero-emission, so not only environmental protection, but also has remedied the deficiency of industrial water.Also contain some medicament in the backwater simultaneously, just can suitably reduce a part of medicament in the production, thereby save cost.
The invention will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Accompanying drawing 1 is process chart of the present invention.
The specific embodiment
A kind of beneficiation method that adopts strong magnetic flotation to remove long quarry impurities, its beneficiation method comprises: fragmentation-ball milling-screening-desliming-strong magnetic-flotation-thickening, its concrete beneficiation method is as follows:
Enter double-deck vibrating sieving machine 2 after 1 fragmentation of A, raw ore F process one-level jaw crusher, the raw ore F that reaches the ball milling standard after the fragmentation enters ball mill 5 ore grindings, underproof raw ore F enters respectively secondary jaw crusher 3 and gyratory crusher 4 continuation fragmentations from double-deck vibrating sieving machine 2, wherein enter and enter gyratory crusher 4 after the raw ore F fragmentation of secondary jaw crusher 3 and continue broken, raw ore F in gyratory crusher after the 4 interior fragmentations enters double-deck vibrating sieving machine 2 again, enters ball mill 5 ore grindings after reaching the ball milling standard again.
B, enter spiral classifier 6 classifications from ball mill 5 mineral out, ball mill 5 continuation ore grindings are returned in classification out underproof mineral, qualified mineral enter one-level high frequency linear vibrating sieving machine 7, the impurity E that overflows from one-level high frequency linear vibrating sieving machine 7 enters tailing dam, mineral enter hydrocyclone 8, return ball mill 5 from hydrocyclone 8 sand setting out, the mineral that overflow from hydrocyclone 8 enter secondary high frequency linear vibrating sieving machine 9.
C, mineral out enter afterwards desliming device 10 from secondary high frequency linear vibrating sieving machine 9 and carry out desliming, then enter 11 degaussings of high gradient Wet-type strong magnetic separator, mineral after the degaussing enter high efficiency stirring tank 12 adding petroleum sodium sulfonates and stir, and consumption mineral per ton are 250～400 grams.Impurity D out enters tailing dam from secondary high frequency linear vibrating sieving machine 9, desliming device 10 and high gradient Wet-type strong magnetic separator 11.
Mineral after D, the stirring enter one-level flotation device 13 and carry out Removal of iron with flotation, then entering lifting agitation tank 14 adding lauryl amines stirs, consumption mineral per ton are 200～400 grams, mineral after the stirring enter secondary floatation machine 15 and roughly select, remove the mica in the mineral, the mineral of roughly selecting out enter three grades of flotation devices 16,17,18 again and scan, and impurity C out enters tailing dam from flotation device 13,15,16,17,18.
E, the mineral of scanning out from flotation device 18 enter enrichment facility 19 thickenings, then enter to form product A after filter 20 filters.The backwater B that overflows from enrichment facility 19 and filter 20 returns tank.
Flotation operation of the present invention carries out in weak acidic medium, and floatation process has added a small amount of sulfuric acid, and consumption mineral per ton are 100～200 grams, and pH value is controlled in 4～5 the scope.
The whole Returning utilizations of industrial water of the present invention, the water after returning is with after the new water that adds mixes, and its pH value is about 6.5, is close with neutral water.
Hunan, hengyang, hunan province county wild goose mining industry Co., Ltd is to containing K in the raw ore
2O is 3.5%, Na
2O is 4%, Fe
2O
3Be that 0.5% feldspar ore adopts technological process provided by the invention to produce, obtain to contain K
2O is 4.8%, Na
2O is 5.5%, Fe
2O
3Content is 0.05% anemonsite concentrate, and product whiteness reaches 65～70%.After the ore dressing removal of impurities, further carry out again feldspar and separate with quartz, can obtain K
2O is 7～8%, Na
2O is 5.5%, Fe
2O
3Be 0.06%, whiteness reaches 68～70% feldspar concentrate and contains SiO
2Be 98.5%, Fe
2O
3Be 0.04%, whiteness reaches 70～72% quartz sand concentrate.
Claims (5)
1. beneficiation method that adopts strong magnetic flotation to remove long quarry impurities, it is characterized in that: beneficiation method comprises fragmentation-ball milling-screening-desliming-by force magnetic-flotation-thickening, and its concrete beneficiation method is as follows:
A, raw ore enter double-deck vibrating sieving machine through one-level jaw crushing crusher machine is laggard, the raw ore that reaches the ball milling standard after the fragmentation enters the ball mill ore grinding, underproof raw ore enters respectively secondary jaw crusher and gyratory crusher continuation fragmentation from double-deck vibrating sieving machine, wherein enter and enter gyratory crusher behind the crushing raw ore of secondary jaw crusher and continue broken, raw ore in gyratory crusher after the fragmentation enters double-deck vibrating sieving machine again, enters the ball mill ore grinding after reaching the ball milling standard again;
B, enter the spiral classifier classification from ball mill mineral out, ball mill continuation ore grinding is returned in classification out underproof mineral, qualified mineral enter one-level high frequency linear vibrating sieving machine, the impurity that overflows from one-level high frequency linear vibrating sieving machine enters tailing dam, mineral enter hydrocyclone, return ball mill from hydrocyclone sand setting out, the mineral that overflow from hydrocyclone enter secondary high frequency linear vibrating sieving machine;
C, mineral out enter afterwards desliming device from secondary high frequency linear vibrating sieving machine and carry out desliming, then enter the degaussing of high gradient Wet-type strong magnetic separator, mineral after the degaussing enter high efficiency stirring tank adding petroleum sodium sulfonate and stir, and enter tailing dam from secondary high frequency linear vibrating sieving machine, desliming device and high gradient Wet-type strong magnetic separator impurity out;
Mineral after D, the stirring enter the one-level flotation device and carry out Removal of iron with flotation, then entering lifting agitation tank adding lauryl amine stirs, mineral after the stirring enter the secondary floatation machine and roughly select, remove the mica in the mineral, the mineral of roughly selecting out enter three grades of flotation devices again and scan, and enter tailing dam from one-level, secondary, three grades of flotation devices impurity out;
E, the mineral of scanning out from three grades of flotation devices enter the enrichment facility thickening, form product after then entering filter and filtering, and the backwater that overflows from enrichment facility and filter returns tank.
2. a kind of beneficiation method that adopts strong magnetic flotation to remove long quarry impurities according to claim 1, it is characterized in that: the consumption of petroleum sodium sulfonate mineral per ton are 250～400 grams; The consumption of lauryl amine mineral per ton are 200～400 grams.
3. a kind of beneficiation method that adopts strong magnetic flotation to remove long quarry impurities according to claim 1 and 2, it is characterized in that: flotation operation carries out in weak acidic medium, the consumption of floatation process sulfuric acid mineral per ton are 100～200 grams, and pH value is controlled in 4～5 the scope.
4. a kind of beneficiation method that adopts strong magnetic flotation to remove long quarry impurities according to claim 1 and 2 is characterized in that: the whole Returning utilizations of industrial water, and the water after returning is with after the water of new adding mixes, and its pH value is 6.5.
5. a kind of beneficiation method that adopts strong magnetic flotation to remove long quarry impurities according to claim 3 is characterized in that: the whole Returning utilizations of industrial water, and the water after returning is with after the water of new adding mixes, and its pH value is 6.5.
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