CN101940975B - Technology for purifying pyrite type quartz sandstones through floatation and iron removal - Google Patents
Technology for purifying pyrite type quartz sandstones through floatation and iron removal Download PDFInfo
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- CN101940975B CN101940975B CN201010271485XA CN201010271485A CN101940975B CN 101940975 B CN101940975 B CN 101940975B CN 201010271485X A CN201010271485X A CN 201010271485XA CN 201010271485 A CN201010271485 A CN 201010271485A CN 101940975 B CN101940975 B CN 101940975B
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Abstract
The invention relates to technology for purifying pyrite type quartz sandstones through floatation and iron removal, which takes the pyrite type quartz sandstones as the raw materials and adopts a single-trough floating machine, a combined collector and the process for purifying through reverse floatation and iron removal. The technology is characterized by 1. processing the raw materials into 40-mesh materials; 2. washing the materials with a 150-mesh standard sieve and tap water to carry out desliming to obtain 40-150-mesh quartz sand materials; 3. removing mechanical irons through magnetic separation; 4. adjusting the pulp density to 20% with the tap water; 5. adjusting the pH value of the pulp to 5 with 20% of sulfuric acid and carrying out stirring for 2min; 6. adding the combined collector with ratio of ethyl xanthate to butyl xanthate being 4:1 according to the amount of 200g/t and carrying out stirring for 3min; 7. adding a foaming agent 2# oil according to the amount of 75g/t and carrying out stirring for 2min; 8. carrying out forth baddle for 15min; and 9. washing the quartz sand materials with tap water, thus obtaining the quartz sand concentrates. The method has obvious effect, good safety, simple process and remarkable social and economic effects and is low in cost, easy to popularize and apply and suitable for processing the quartz sands for the glass industry with the pyrite type quartz sandstones as the raw materials.
Description
One, affiliated technical field
The present invention relates to a kind of flotation deironing purification technique of pyrite type quartzy sandstone; Butyl xanthate=4: 1) and reverse flotation deironing purifying technique adopt single-trough flotating machine, combined capturing and collecting agent (ethyl xanthate:; Pyrite type quartzy sandstone is carried out the deironing purification processing; Not only can remove impure mineral pyrite in the ore, reduce Fe
2O
3Content, and can remove partial clay mineral, reduce Al
2O
3Deng impurity content, be applicable to that with pyrite type quartzy sandstone be the industrial quartz sand of raw material processed glass.
Two, technical background
Quartzy sandstone is fixed chip rock, and its quartzy chip content reaches more than 95%, derives from various magmatic rocks, sedimentary rock and metamorphic rock, and associated mineral is feldspar, mica and clay mineral, and cement is mainly siliceous gluing
[1]Quartzy sandstone is the main source of glass, pottery, casting and other industrial quartz sand silicoide raw material.Because quartzy sandstone contains impurity such as associated mineral and cement, generally must purify through ore dressing can industrial utilization.In recent years, Sichuan glass industry and new forms of energy industry development are very fast, and the quartz sand consumption constantly increases, and there is very big breach in local glass industry of producing with quartz sand, far can not satisfy the needs of Sichuan Province's socio-economic development and strategic new industry.
1, Muchuan, Sichuan yellow lead pyrite type quartzy sandstone ore deposit characteristics
The ore reserve in quartzy sandstone mineral deposit, yellow lead town, Muchuan County, Sichuan Province is above ten million ton
[2],, since finding from the sixties in last century, failed to obtain development and use owing to lack effective purification technique always.For this reason, we have at first carried out the process mineralogy research in this ore deposit, and the result shows
[3]: this ore deposit is that grain contains the feldspar quartzy sandstone in a kind of silicon shale; Raw ore is main with quartz, particle size range 0.2～0.5mm (32 orders～80 orders); Contain a small amount of simultaneously or other impure mineral of trace, they are pyrite, and montmorillonite, illite, kaolinite, microcline and calcite etc.; To ore quality influence is more greatly pyrite and clay mineral, pyrite content＜1% (particle diameter 0.02-0.10mm) wherein, and clay mineral content is about 8%, and they intersperse among between the quartz particles so that the intergranular chink is unordered; Raw ore SiO
2Content is 94.02wt%, Al
2O
3(3.88wt%), K
2O harmful components such as (1.28wt%) are composed and are stored in the mineral such as montmorillonite, illite, kaolinite; Fe
2O
3(0.09wt%) be mainly derived from pyrite, also have part to derive from clay mineral.
2, pyrite is to the influence of quartzy sandstone ore quality
In order further to investigate thoroughly the influence of pyrite to ore quality, we adopt several different methods to carry out test analysis.Fig. 1 is inclined to one side (b) light microscope photo of the list (a) of the same ken of Muchuan yellow lead pyrite type quartzy sandstone raw ore petrographic thin section.Can know by Fig. 1; Pyrite is the irregular fibrous mineral of black non transparent in this ore; Particle diameter is distributed as 0.02～0.10mm, and disorder distribution also is interspersed in quartzy intergranular or is wrapped in the assorted base, and obscure boundary is clear; Significantly weathering phenomenon has taken place, and the partial clay mineral filling is among the space that the pyrite weathering produces.Fig. 2 is pyrite fine particle X ray powder crystal diffraction analysis (XRD) result who under stereoscope, selects, and proves clay minerals such as containing kaolin in the pyrite particle simultaneously.Chemical composition analysis (XRF) is the result show, pyrite fine particle Fe
2O
38.50wt%, SO
38.05wt%, Al simultaneously
2O
3Content is up to 23.58wt%, and CaO (5.10wt%) and MgO (1.19wt%) content are also higher in addition.Therefore, the pyrite particle in this ore is actually the mixture of weathering pyrite and clay mineral composition, and pyrite particle not appearance is objectionable impurities Fe
2O
3Main carrier also is part A l simultaneously
2O
3, harmful components such as CaO carrier.In a word, pyrite is present in the quartzy sandstone ore with fine particle, and becomes Fe
2O
3And Al
2O
3, harmful components such as CaO carrier.At present, the pyrite type quartzy sandstone ore deposit with this characteristic still is a reported first at home, and its deironing purification technique also beyond example.
Float glass with the quartz sand technical indicator normally at present: SiO
2>=98.6% (allowing fluctuation range ± 0.3%), Al
2O
3≤0.5% (allowing fluctuation range ± 0.2%), Fe
2O
3≤0.09% (allowing fluctuation range ± 0.02%), TiO
2≤0.08% (allowing fluctuation range ± 0.02%), 30-150 order>=94.5%.Therefore, adopt the industrial quartz sand of quartzy sandstone ore deposit processed glass, must remove the main harmful mineral yellow iron ore in the ore through suitable purifying technique with above-mentioned characteristic.Therefore, the present invention is not only significant for the development and use in yellow lead pyrite type quartzy sandstone mineral deposit, Muchuan, and the development and use of similar nonmetal depdosit are also had important directive function.
3, pyrite and ore dressing purification technique thereof
Pyrite, chemical composition FeS
2, its crystal belongs to the sulfide mineral of isometric system.Theoretical (wt%): Fe46.55, the S53.45 of forming of pyrite.Often there are Co, Ni isomorphism to replace Fe, form FeS
2-CoS
2And FeS
2-NiS
2Series.Common crystalline form is cube, pyritohedron, octahedron and their combinate form.The striped parallel with crystal edge arranged on the cube crystal face, and the striped on each crystal face is vertical each other.
Mostly the pyrite color is light yellow or brass, and streak is green black or brown black, and strong metal gloss is opaque, no cleavage, irregular columnar fracture.Hardness 6-6.5, proportion 4.95-5.20,1171 ℃ of fusing points, property is crisp.Easy-weathering is a limonite under surface conditions
[4]Pyrite is semiconductor mineral, has weak inductive, and pyroelectricity.Water insoluble and watery hydrochloric acid is dissolved in nitric acid and has Sulfur to separate out.
Pyrite is occurring in nature output one of sulfide mineral the most widely, is widely used.But pyrite can exert an influence to mineralogical property sometimes as the accompanying impurities of nonmetallic mineral and exist.When Fe, S exist with trace element form, be harmful to, can exert an influence product quality.So, the pyritous extraction that exists as harmful components is just had very important meaning.
Removing pyrite in the nonmetallic mineral processing is a very important job.See that from forefathers' result of study from the nonmetallic ore raw material, removing pyrite is the comparison difficulty.According to pyrite chemistry performance, adopt acid-base method and improper
[5]According to its physical property, pyrite magnetic very a little less than, or almost nonmagnetic
[6], can not effectively remove through magnetic separation.In addition, also have methods such as gravity treatment and flotation: (1) gravity treatment, pyrite proportion are 4.95-5.20, and be more great than the ratio of general nonmetallic mineral, can it be removed through the method for gravity treatment in theory.But pyrite particle is tiny in the yellow lead pyrite type quartzy sandstone of Muchuan, and with mineral cement such as clay together, be unfavorable for that gravity treatment removes; (2) flotation is according to documents and materials
[7], plurality of reagents such as ethyl xanthogenate, butyl xanthate are arranged as pyritous collecting agent, be used with 2# wet goods blowing agent, can pyrite be flotated from the nonmetallic ore raw material.
4, pyrite type quartzy sandstone flotation deironing purification technical problem underlying
The technical problem underlying that the present invention need solve has three: the first, owing to plurality of reagents is arranged as the FLOTATION OF PYRITE collecting agent, selectable flotation scheme is more.Therefore, must carry out the flotation scheme contrast test under the different regime of agent, select and research is applicable to pyrite type quartzy sandstone flotation deironing purification scheme.The second, preferred version must rely on the optimization technological parameter, just obtains better employing effect.Therefore, should in the optimum flotation scheme, further carry out process parameter tests such as flotation pH value, pulp density, dosing, flotation time, to optimize technological parameter.The 3rd, on above experimental study basis, based on laboratory sample processing characteristic and floating operation step, confirm final processing technology again.
The objective of the invention is, be research object with Muchuan yellow lead pyrite type quartzy sandstone, and research is applicable to pyrite type quartzy sandstone flotation deironing purification technique, for glass industry provides technical support with the processing of quartz sand.Through retrieval, do not find a kind of bibliographical information or patent application that is directed against the flotation deironing purification technique of pyrite type quartzy sandstone.
The main reference document
[1] Zheng Shuilin. nonmetallic ore processing and application [M]. Beijing: Chemical Industry Press, 2003,282pp.
[2] the auspicious moral geological and mineral application study in Leshan one hundred Co., Ltd. the cold family in yellow lead town, Muchuan County, Sichuan Province ditch stone pit chemical fertilizer is with sandstone mine reserve annual report .2006,16pp.
[3] Yin Deqiang, Wang Ling, Kong Qin, Deng Miao, Li Ping, model blog article. Muchuan, Sichuan yellow lead quartzy sandstone process mineralogy research [J]. mineral rock, 2010, (1): 1-5.
[4] Yu Zhiming. Chinese chemical goods complete works of [M]. Beijing: the .1996. of China Materials Publishing House
[5] pyrite http://www.chemgogo.com/info/casproduct/457348_0.html.
[6] king builds, Liu Zechun, and Jiang Wenying, etc. the relation of magnetic susceptibility and granularity, mineral and palaeoenvironment meaning [J] thereof. geography reason newspaper, 1996,51 (2): 155-163.
[7] Peng Wenbin, Hu Yongping. composite reagent improves the flotation of pyrite rate of recovery [J]. chemical mine technology, 1997,26 (1): 19-22.
[8] open the river rising in Ningxia and flowing into central Shaanxi and give birth to the fluffy orchid of fault. mining medicament [M]. Beijing: metallurgical industry publishing house, 2008,1405pp.
[9] Pei Xiaodong, Hu Zhusheng, Yang Huiwu. optimize the technical study and the production practices [J] of sulphur flotation. non-ferrous metal, 2006, (2): 14,23-25.
[10] Du Feifei, Lv Xianjun, Sun Lijun, Chen Ping. floatation reclaims the experimental study [J] of sulphur from certain mine tailing. metal mine, 2009, (9): 185-188.
[11] Sun Shuiyu, Li Bai is light, the Wang Dian assistant. COLLECTORLESS FLOTATION OF SULPHIDE MINERALS [J]. and the journal .1990 of Central-South China Institute of Mining and Metallurgy, (5): 473-477.
[12] red bayberry gold, Chen Jianhua, Ma Shaojian, Hu Zhiliu. pyrite self-induction electrochemical floatation research [J] metallic ore, 2003, (1): 34-35.
[13] Wang Xiaomin, Zhang Tingan, Lu Kingdom's will, Bao Li, Lv Bin, Jiang Xiaoli. the technology [J] of high-sulfur bauxite flotation sulphur removal. rare metal, 2009,33 (5): 728-732.
Three, technical scheme
1, test specimen
Muchuan yellow lead quartzy sandstone raw ore is a kind of comparatively fine and close block rock of light gray-white.The test roughing sand is taken from the washing roughing sample (J02) of local little factory, granularity :-20 orders 100% ,-150 orders are a small amount of.According to sampling batch difference, number J02-01, J02-02, J02-03, represent first, second, third batch of sample of J02 respectively.
The processing method of washing roughing test roughing sand sample (J02) is: (1) crushing and screening: adopt fragmentation and screening plant raw ore to be processed into-20 purpose materials; (2) washing desliming: adopt running water that material is washed desliming; (3) iron removal by magnetic separation: adopt the magnetic separator wet type to remove the mechanical iron of bringing into because of crushing and screening, promptly obtain washing the roughing roughing sand.Can know by table 1, compare, washing roughing test roughing sand sample SiO with raw ore
2Improve Al
2O
3, K
2O has certain reduction, but Fe
2O
3Increase on the contrary.Explain that present simple washing roughing does not reach glass industry and uses the quartz sand requirement.
Require (30-150 order >=94.5%) according to glass industry with quartz sand size, adopt standard screen that J02-02 roughing sand sample is processed into-40～+ 150 orders.Can know by table 1, compare that the chemical composition (wt%) of 40-150 order sample changes to some extent: SiO with the J02-02 roughing sand
2Improve 1.415, Al
2O
3, K
2O, Fe
2O
3Descend 0.705,0.282,0.035 respectively, explain that ore grinding and screening throwing tail have certain refining effect.
Table 1 Muchuan yellow lead quartzy sandstone raw ore and washing roughing different batches sample (J02) thereof
Chemical composition XRF test result (wt%)
Annotate: 4 raw ore sample means such as yellow lead cold family ditch mining area, raw ore average out to Muchuan and washing roughing factory
[3]Roughing sand average out to J02-01, J02-02, J03-03 sample mean
2, float test method
According to forefathers' experience
[6-13], basic fundamental thinking of the present invention is: the first step, and (20 orders, 100% ,-150 orders are a small amount of) is test specimen with the J02-02 roughing sand, carries out the flotation scheme contrast test under the different regime of agent; Second step, adopt the more excellent flotation scheme of effect, and be test specimen with J02-03 roughing sand (20 orders, 100% ,-150 orders are a small amount of), carry out process parameter tests such as flotation pH value, pulp density, dosing, flotation time; The 3rd step, adopt optimizing technology parameters, and be test specimen with 40-150 order quartz sand material, carry out the resultant effect demonstration test.All test specimen chemical compositions all adopt day island proper Tianjin XRF-1800 type Xray fluorescence spectrometer (XRF) to analyze, and method of testing is a powder pressing method.
To the less characteristics of pyrite content; Principle according to " pressing down how floating few "; Adopt 1.5LXFD-63 type single-trough flotating machine and reverse flotation deironing purifying technique, promptly pyrite in the ore and inclusion enclave thereof and collecting agent get in the flotation froth layer and are scraped then, and the quartz sand concentrate is then stayed the method for floating of flotation cell bottom; Its operating procedure is (Fig. 3): pulp density is regulated in (1): the quartz sand material that will take by weighing required weight adds in the flotation cell, adopts running water adjustment pulp density then.The pulp density here is meant: quartz sand weight/(quartz sand weight+running water weight); (2) regulate slurry pH: adopt acid, base reagent adjustment slurry pH, adopt flotation device to stir 2min then; (3) add collecting agent: in ore pulp, add collecting agent, adopt flotation device to stir 3min then; (4) add foaming agent: in ore pulp, add foaming agent 2# oil, adopt flotation device to stir 2min then; (5) scrape bubble: open the flotation device charge valve, scrape the bubble certain hour; (6) material cleans: after scraping bubble and stopping, adopting running water that quartz sand material in the flotation cell is cleaned, promptly obtain flotation quartz sand concentrate.
3, flotation purification scheme select test
Table 2 is to be test specimen with J02-02 roughing sand (20 orders, 100% ,-150 orders are a small amount of), the float test contrast scheme under different regime of agent, and result of the test is seen table 3.Can know by table 3, and employing scheme 1# combination medicament system (ethyl xanthate: butyl xanthate=4: 1), SiO
2Content is higher, Al
2O
3, Fe
2O
3Content is lower.Compare with other schemes, the flotation refining effect is best, carries out next step process parameter test so choose the 1# scheme.
The float test contrast scheme of table 2 Muchuan yellow lead pyrite type quartzy sandstone sample (J02-02) under different regime of agent
Annotate: combination medicament 1: ethyl xanthate: butyl xanthate=4: 1; Combination medicament 2: ethyl xanthate: amyl group xanthate=1: 1.
The different flotation scheme of table 3 Muchuan yellow lead pyrite type quartzy sandstone sample (J02-02) contrast test
Chemical composition XRF test result (wt%)
4, flotation purifying technique parameter optimization test
For optimizing flotation purifying technique parameter; 1# flotation scheme with in the table 2 is the basis; And be test specimen (table 1) with J02-03 roughing sand (20 orders, 100% ,-150 orders are a small amount of), further study the influence to de-ferrous effect such as slurry pH, pulp density, dosing, flotation time.
(1) slurry pH is to the influence of de-ferrous effect: at pulp density 25%; Combined capturing and collecting agent (ethyl xanthate: consumption 200g/t butyl xanthate=4: 1); Flotation time 15min; Under the foaming agent 2# oil consumption 75g/t condition, to the influence of flotation de-ferrous effect, result of the test is as shown in Figure 4 under different pH condition for the investigation collecting agent.Can be known that by Fig. 4 the variation of slurry pH has bigger influence to flotation effect, when pH=5, pH=9, de-ferrous effect is better, and wherein de-ferrous effect is best during pH=5, explains that weak acid environment is the most favourable to this combined capturing and collecting agent flotation pyrite.
(2) pulp density is to the influence of de-ferrous effect: in slurry pH is 5; (ethyl xanthate: butyl xanthate=4: 1) consumption is 200g/t to combined capturing and collecting agent; Flotation time is 15min; The foaming agent consumption is under the 75g/t condition, investigates the influence of different pulp densities to de-ferrous effect, and result of the test is seen Fig. 5.Can know that from Fig. 5 pulp density is fairly obvious to the influence of flotation de-ferrous effect, wherein: under the low pulp density of 15-20%, the flotation de-ferrous effect is better; After pulp density surpassed 20%, with the increase of pulp density, iron-holder rose gradually in the concentrate, and its flotation de-ferrous effect worse and worse.So pulp density is suitable with 20%.
(3) the combined capturing and collecting agent consumption is to the influence of de-ferrous effect: in slurry pH=5; Pulp density 20%; Flotation time 15min; Under the condition of foaming agent 2# oil consumption 75g/t, (ethyl xanthate: butyl xanthate=4: 1) consumption is to the influence of de-ferrous effect, and the result is as shown in Figure 6 to investigate combined capturing and collecting agent.Can know Fe from Fig. 6
2O
3Not corresponding minimizing of content along with the increase of collector dosage, wherein when collector dosage during at 200g/t, Fe
2O
3Content is minimum.This possibly be that the affiliation hydrolytic reactions under the acid medium condition that adds owing to excessive collecting agent lost efficacy, thereby loses pyritous collecting ability, so collector dosage should be about 200g/t.
(4) flotation time is to the influence of de-ferrous effect: at pH=5; Combined capturing and collecting agent (ethyl xanthate: consumption 200g/t butyl xanthate=4: 1); Pulp density 20%; Under the condition of foaming agent 2# oil consumption 75g/t, investigate the influence of different flotation times to this combined capturing and collecting agent flotation de-ferrous effect, result of the test is as shown in Figure 7.Can know that from Fig. 7 at 5-20min, basic trend is the prolongation along with flotation time, Fe
2O
3Content reduce gradually, wherein before the fall of 5min maximum, Fe behind the 15min
2O
3Content reduce and to slow down.After flotation time surpasses 20min, Fe
2O
3Content the phenomenon that rises appears on the contrary, possibly be prolongation along with mixing time, xanthate has lost pyrite collecting function gradually by the free oxygen oxidation in the ore pulp, the pyrite of collecting turns back to again in the quartz sand, causes concentrate Fe
2O
3Content rises.So consider that from practicing thrift cost and the angle of time suitable flotation time is 15min.
In sum; (ethyl xanthate: butyl xanthate=4: 1) the reverse flotation deironing is purified, and can obtain refining effect preferably, and its optimization floatation process parameter is: pH values of pulp=5 to adopt combined capturing and collecting agent; Pulp density is 20%; (ethyl xanthate: butyl xanthate=4: 1) consumption is 200g/t to combined capturing and collecting agent, and flotation time is 15min, and foaming agent 2# oil consumption is 75g/t.
5, flotation deironing purifying technique
Adopting prioritization scheme and optimize technological parameter, is test specimen with 40-150 order quartz sand material, carries out the resultant effect demonstration test, and its sample chemical composition and granularity etc. all reach the industrial quartz sand technical requirement of float glass.Therefore, test roughing sand sample processing method according to the present invention, floating operation step (Fig. 3); The flotation purification scheme is selected result of the test; And the flotation that obtains of test purifies and optimizes technological parameter, can obtain a kind ofly being applicable to that with pyrite type quartzy sandstone be the technology of the industrial quartz sand of raw material processed glass, that is: and be raw material with yellow lead town, Muchuan County, Sichuan Province pyrite type quartzy sandstone; Adopt single-trough flotating machine, combined capturing and collecting agent and reverse flotation deironing purifying technique; The industrial quartz sand of processed glass can be obtained significantly comprehensive refining effect, and its concrete technology is (Fig. 8) as follows:
A, crushing and screening: adopt fragmentation and screening plant raw material to be processed into-40 purpose materials;
B, washing desliming: adopt 150 mesh standard sieves and running water that material is washed desliming, obtain 40-150 purpose quartz sand material;
C, iron removal by magnetic separation: adopt the magnetic separator wet magnetic separation to remove mechanical iron;
D, regulate pulp density: take by weighing the quartz sand material of required weight and join in the flotation cell, adopt running water that pulp density is adjusted to 20% then;
E, adjusting slurry pH: employing concentration is 20% sulfuric acid, and slurry pH is adjusted to 5, adopts flotation device to stir 2min then;
F, add collecting agent: the consumption by 200g/t adds ethyl xanthate in ore pulp: the combined capturing and collecting agent of butyl xanthate=4: 1, adopt flotation device to stir 3min then;
G, interpolation foaming agent: the consumption of pressing 75g/t adds foaming agent 2# oil in ore pulp, adopt flotation device to stir 2min then;
H, scrape bubble: open the flotation device charge valve, scrape bubble 15min;
I, material clean: after scraping bubble and stopping, adopting running water that quartz sand material in the flotation cell is cleaned, promptly obtain the quartz sand concentrate.
Four, technical advantage
The present invention is according to yellow lead town, Muchuan County, Sichuan Province pyrite type quartzy sandstone process mineralogy characteristics; Adopt single-trough flotating machine, combined capturing and collecting agent and reverse flotation deironing purifying technique, formed and a kind ofly be applicable to that with pyrite type quartzy sandstone be the technology of the industrial quartz sand of raw material processed glass.The present invention has that effect is obvious, security good, technology is simple, with low cost, apply advantage and advantages such as easy, of many uses, that economic results in society are remarkable, be embodied in:
(1) effect is obvious.Pyrite in the quartzy sandstone of the Muchuan yellow lead pyrite ore deposit is present in the ore with fine particle, and becomes Fe
2O
3And Al
2O
3Carrier etc. harmful components.The present invention adopts single-trough flotating machine, combined capturing and collecting agent and reverse flotation deironing purifying technique, removing pyrite, reduces Fe
2O
3The time, to reducing Al
2O
3Etc. harmful components better effects is arranged also, the quartz sand concentrate of flotation reaches glass industry and uses the quartz sand technical requirement, has obtained significantly comprehensive refining effect.
(2) security is good.Equipment and reagent that the present invention adopts all are safe and reliable products, adopt technology of the present invention can not have a negative impact to personnel.
(3) technology is simple.Technology of the present invention is simple, and work is convenient, and support is held easily.
(4) cost is lower.The present invention adopts reagent conveniently to be easy to get, and price comparison is cheap, and consumption is less; Simultaneously, relevant device is fairly simple, and less input, and is with low cost.
(5) apply easily.Technology of the present invention is simple, and is easy to operate, and material and facility is with low cost, and the study support is held and applied easily.
(6) economic results in society are remarkable.The ore reserve in quartzy sandstone mineral deposit, yellow lead town, Muchuan County, Sichuan Province is above ten million ton.Owing to lack effective purification technique, since finding from the sixties in last century, failed to obtain development and use always.At present, the pyrite type quartzy sandstone ore deposit with this characteristic still is a reported first at home, and its deironing purification technique also beyond example.Therefore, the present invention is not only significant for the development and use in yellow lead pyrite type quartzy sandstone mineral deposit, Muchuan, and the development and use of similar nonmetal depdosit are also had important directive function.
Five, description of drawings
The list (a) of the same ken of petrographic thin section of Fig. 1 Muchuan yellow lead pyrite type quartzy sandstone raw ore is (b) light microscope photo partially.Among the figure: Q-Quartz (quartz), F-Feldspar (feldspar), P-Pyrite (pyrite), C-Clay minerals (clay mineral).
Pyrite fine particle X ray powder crystal diffracting spectrum in the yellow lead pyrite type quartzy sandstone of Fig. 2 Muchuan.
Fig. 3 pyrite type quartzy sandstone reverse flotation deironing purification test operation step sketch map.
Fig. 4 pH is to the influence of flotation de-ferrous effect.
Fig. 5 pulp density is to the influence of flotation de-ferrous effect.
Fig. 6 combined capturing and collecting agent consumption is to the influence of flotation de-ferrous effect.
Fig. 7 flotation time is to the influence of flotation de-ferrous effect.
The flotation deironing purifying technique figure of a kind of pyrite type of Fig. 8 quartzy sandstone.
Six, the specific embodiment
Instance: a kind of flotation deironing purification technique of pyrite type quartzy sandstone
The pyrite type quartzy sandstone raw ore of this instance is a kind of comparatively fine and close block rock of light gray-white, picks up from quartzy sandstone mining area, yellow lead town, Muchuan County, Sichuan Province, and the raw ore average chemical constitution is as shown in table 4.
Table 4 Muchuan yellow lead pyrite type quartzy sandstone raw ore and flotation concentrate chemical composition XRF test result (wt%) thereof
Annotate: 4 raw ore sample means such as yellow lead cold family ditch mining area, raw ore average out to Muchuan and washing roughing factory
This instance is a raw material with pyrite type quartzy sandstone, adopts single-trough flotating machine, combined capturing and collecting agent and reverse flotation deironing purifying technique, the industrial quartz sand of processed glass, and concrete technology is following:
A, crushing and screening: adopt fragmentation and screening plant raw material to be processed into-40 purpose materials;
B, washing desliming: adopt 150 mesh standard sieves and running water that material is washed desliming, obtain 40-150 purpose quartz sand material;
C, iron removal by magnetic separation: adopt the magnetic separator wet magnetic separation to remove mechanical iron;
D, regulate pulp density: take by weighing the quartz sand material of required weight and join in the flotation cell, adopt running water that pulp density is adjusted to 20% then;
E, adjusting slurry pH: employing concentration is 20% sulfuric acid, and slurry pH is adjusted to 5, adopts flotation device to stir 2min then;
F, add collecting agent: the consumption by 200g/t adds ethyl xanthate in ore pulp: the combined capturing and collecting agent of butyl xanthate=4: 1, adopt flotation device to stir 3min then;
G, interpolation foaming agent: the consumption of pressing 75g/t adds foaming agent 2# oil in ore pulp, adopt flotation device to stir 2min then;
H, scrape bubble: open the flotation device charge valve, scrape bubble 15min;
I, material clean: after scraping bubble and stopping, adopting running water that quartz sand material in the flotation cell is cleaned, promptly obtain the quartz sand concentrate.
Table 4 is chemical composition XRF test results of Muchuan yellow lead pyrite type quartzy sandstone raw ore and flotation quartz sand concentrate thereof.Can know quartz sand concentrate SiO by table 4
298.882wt%, Al
2O
30.520wt%, Fe
2O
30.030wt%, granularity 40-150 order has reached the industrial quartz sand technical requirement of float glass.Compare SiO with raw ore
2Improve 4.860wt%, Fe
2O
3, Al
2O
3, K
2O's 0.058wt%, 3.361wt%, 1.114wt% has descended respectively, and simultaneously, other impurity component has also obtained reduction in various degree, and this explanation adopts the present invention to obtain significantly comprehensive refining effect.
Claims (1)
1. the flotation deironing method of purification of a pyrite type quartzy sandstone is a raw material with pyrite type quartzy sandstone ore deposit, adopts single-trough flotating machine, combined capturing and collecting agent and reverse flotation deironing purifying technique, and the industrial quartz sand of processed glass is characterized in that:
A, crushing and screening: adopt fragmentation and screening plant raw material to be processed into-40 purpose materials;
B, washing desliming: adopt 150 mesh standard sieves and running water that material is washed desliming, obtain 40-150 purpose quartz sand material;
C, iron removal by magnetic separation: adopt the magnetic separator wet magnetic separation to remove mechanical iron;
D, regulate pulp density: take by weighing the quartz sand material of required weight and join in the flotation cell, adopt running water that pulp density is adjusted to 20% then;
E, adjusting slurry pH: employing concentration is 20% sulfuric acid, and slurry pH is adjusted to 5, adopts flotation device to stir 2min then;
F, add collecting agent: the consumption by 200g/t adds ethyl xanthate in ore pulp: the combined capturing and collecting agent of butyl xanthate=4: 1, adopt flotation device to stir 3min then;
G, interpolation foaming agent: the consumption of pressing 75g/t adds foaming agent 2# oil in ore pulp, adopt flotation device to stir 2min then;
H, scrape bubble: open the flotation device charge valve, scrape bubble 15min;
I, material clean: after scraping bubble and stopping, adopting running water that quartz sand material in the flotation cell is cleaned, promptly obtain the quartz sand concentrate.
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| CN102189037B (en) * | 2011-03-08 | 2015-06-17 | 仪征风日石英科技有限公司 | Impurity removal process for quartz sand |
| CN102357427A (en) * | 2011-07-10 | 2012-02-22 | 重庆大学 | Combined agent for pyrite flotation |
| CN102600982B (en) * | 2012-03-26 | 2013-06-12 | 武汉理工大学 | Fluoride-free low-acid zwitterion quartz sand reverse flotation process |
| WO2013163678A1 (en) * | 2012-04-30 | 2013-11-07 | Ausmetec Pty Ltd | Recovering mineral from ore |
| CN109485048A (en) * | 2017-09-15 | 2019-03-19 | 江苏闽江矿业有限公司 | A kind of impurity removal process of quartz sand |
| CN107398354A (en) * | 2017-09-30 | 2017-11-28 | 江苏闽江矿业有限公司 | A kind of silica sand adsorbs Removal of iron with flotation technique |
| CN109127110A (en) * | 2018-08-10 | 2019-01-04 | 江苏凯达石英股份有限公司 | Pyrite-type quartz sand flotation purifying technique |
| CN109225603A (en) * | 2018-08-10 | 2019-01-18 | 江苏凯达石英股份有限公司 | High-purity low-iron quartz sand purifying technique |
| CN109046746A (en) * | 2018-08-10 | 2018-12-21 | 江苏凯达石英股份有限公司 | Low-grade quartz sand purifying technique |
| CN110142134B (en) * | 2019-05-16 | 2022-01-04 | 辽宁万隆科技研发有限公司长沙分公司 | Method for comprehensively utilizing iron ore surrounding rock |
| CN111499365B (en) * | 2020-04-22 | 2022-05-20 | 宜宾学院 | Method for whitening weathered sandstone through acid-base combined treatment |
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