CN101898168A - 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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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 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 selling raw ore 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 deposit.Handle though there is the mine that raw ore has been carried out simple processing in recent years, at most also only increased by one section strong magnetic technological process, make Fe
2O
3Content from reducing 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 go into 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 secondary jaw crusher and gyratory crusher continuation fragmentation respectively from double-deck vibrating sieving machine, raw ore after the fragmentation enters double-deck vibrating sieving machine again, enters the ball mill ore grinding again after reaching the ball milling standard.
B, the mineral that come out from ball mill enter the spiral classifier classification, the classification underproof mineral that come out return ball mill and continue ore grinding, qualified mineral enter one-level high frequency straight line vibrating sieving machine, the impurity that overflows from one-level high frequency straight line vibrating sieving machine enters tailing dam, mineral enter hydrocyclone, the sand setting that comes out from hydrocyclone returns ball mill, and the mineral that overflow from hydrocyclone enter secondary high frequency straight line vibrating sieving machine.
C, mineral carry out desliming from entering desliming device after secondary high frequency straight line vibrating sieving machine comes out, and enter the degaussing of high gradient Wet-type strong magnetic separator then, and the mineral after the degaussing enter high efficiency stirring tank and add petroleum sodium sulfonate and stir.The impurity that comes out from secondary high frequency straight line vibrating sieving machine, desliming device and high gradient Wet-type strong magnetic separator enters tailing dam.
Mineral after D, the stirring enter the one-level flotation device and carry out the flotation deironing, entering lifting tank diameter adding lauryl amine then stirs, mineral after the stirring enter the secondary flotation device 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 the impurity that comes out from one-level, secondary, three grades of flotation devices enters tailing dam.
E, the mineral of scanning out from three grades of flotation devices enter the enrichment facility thickening, enter filter then and filter back formation product.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 spot 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 initiate water mixes, and its pH value is about 6.5, is close with neutral water.
The present invention compared with prior art has following characteristics:
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 industries such as non-ferrous metal, ferrous metal, noble metal, and its production capacity is big, grinding efficiency is high, convenient operation and management, can produce continuously.Though 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 vibrating screen, can remove above big mica splitting of 3mm and bark and grass roots and the above mica of 1mm.The present invention has installed a high frequency linear vibrating screen in the spiral classifier overflow, a high frequency linear vibrating screen also has been installed in the hydrocyclone overflow, thereby can remove 1mm above mica and turf tree root as early as possible.
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, as limonite, speculum iron, biotite etc.
5, adopt floatation process and add efficient floating agent, can remove mica, various dark colour mineral and iron-bearing mineral,, improve product whiteness and played critical effect guaranteeing product quality.
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.
Below in conjunction with the drawings and specific embodiments the present invention is further described.
Description of drawings
Accompanying drawing 1 is a 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 secondary jaw crusher 3 and gyratory crusher 4 continuation fragmentations respectively from double-deck vibrating sieving machine 2, raw ore F after the fragmentation enters double-deck vibrating sieving machine 2 again, enters ball mill 5 ore grindings again after reaching the ball milling standard.
B, the mineral that come out from ball mill 5 enter spiral classifier 6 classifications, the classification underproof mineral that come out return ball mill 5 and continue ore grindings, qualified mineral enter one-level high frequency straight line vibrating sieving machine 7, the impurity E that overflows from one-level high frequency straight line vibrating sieving machine 7 enters tailing dam, mineral enter hydrocyclone 8, the sand setting that comes out from hydrocyclone 8 returns ball mill 5, and the mineral that overflow from hydrocyclone 8 enter secondary high frequency straight line vibrating sieving machine 9.
C, mineral carry out desliming from entering desliming device 10 after secondary high frequency straight line vibrating sieving machine 9 comes out, enter 11 degaussings of high gradient Wet-type strong magnetic separator then, 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.The impurity D that comes out from secondary high frequency straight line vibrating sieving machine 9, desliming device 10 and high gradient Wet-type strong magnetic separator 11 enters tailing dam.
Mineral after D, the stirring enter one-level flotation device 13 and carry out the flotation deironing, entering lifting tank diameter 14 adding lauryl amines then stirs, consumption mineral per ton are 200～400 grams, mineral after the stirring enter secondary flotation device 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 the impurity C that comes out from flotation device 13,15,16,17,18 enters tailing dam.
E, the mineral of scanning out from flotation device 18 enter enrichment facility 19 thickenings, enter filter 20 then and filter back formation product A.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 spot 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 initiate water 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 deposit 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 feldspar again 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-magnetic-flotation by force-thickening, and its concrete beneficiation method is as follows:
A, raw ore go into 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 secondary jaw crusher and gyratory crusher continuation fragmentation respectively from double-deck vibrating sieving machine, raw ore after the fragmentation enters double-deck vibrating sieving machine again, enters the ball mill ore grinding again after reaching the ball milling standard;
B, the mineral that come out from ball mill enter the spiral classifier classification, the classification underproof mineral that come out return ball mill and continue ore grinding, qualified mineral enter one-level high frequency straight line vibrating sieving machine, the impurity that overflows from one-level high frequency straight line vibrating sieving machine enters tailing dam, mineral enter hydrocyclone, the sand setting that comes out from hydrocyclone returns ball mill, and the mineral that overflow from hydrocyclone enter secondary high frequency straight line vibrating sieving machine;
C, mineral carry out desliming from entering desliming device after secondary high frequency straight line vibrating sieving machine comes out, enter the degaussing of high gradient Wet-type strong magnetic separator then, mineral after the degaussing enter high efficiency stirring tank adding petroleum sodium sulfonate and stir, and the impurity that comes out from secondary high frequency straight line vibrating sieving machine, desliming device and high gradient Wet-type strong magnetic separator enters tailing dam;
Mineral after D, the stirring enter the one-level flotation device and carry out the flotation deironing, entering lifting tank diameter adding lauryl amine then stirs, mineral after the stirring enter the secondary flotation device 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 the impurity that comes out from one-level, secondary, three grades of flotation devices enters tailing dam;
E, the mineral of scanning out from three grades of flotation devices enter the enrichment facility thickening, enter filter then and filter the back and form product, 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 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 initiate water 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 initiate water mixes, and its pH value is 6.5.
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| CN102247925A (en) * | 2011-05-19 | 2011-11-23 | 成都利君实业股份有限公司 | Flotation method of nonferrous metal ores |
| CN102259054A (en) * | 2010-12-07 | 2011-11-30 | 鞍钢集团矿业公司 | Process for continuous grinding, medium magnetic separation, strong magnetic separation and acidic forward floatation of hematite |
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