CN104925822A - Fine purification method of landed natural feldspar ore - Google Patents
Fine purification method of landed natural feldspar ore Download PDFInfo
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- CN104925822A CN104925822A CN201410101237.9A CN201410101237A CN104925822A CN 104925822 A CN104925822 A CN 104925822A CN 201410101237 A CN201410101237 A CN 201410101237A CN 104925822 A CN104925822 A CN 104925822A
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Abstract
The invention discloses a fine purification method of landed natural feldspar ore. The method belongs to the field of purification of natural feldspar ore. According to the invention, landed natural feldspar ore is used as a raw material, and the landed natural feldspar ore is mainly composed of the following ingredients: albite, quartz, hematite, mica, chlorite, garnet, pyrite, a few clay minerals and the like, wherein iron content is about 0.36%. According to the method, the raw material is crushed to obtain a mixture of concentrate and tailings, and particle size of the concentrate is controlled to -1.25+0.112mm; and after five processes of scrubbing, magnetic separation, flotation, mica flotation and chemical purification, iron content of feldspar concentrate is reduced below 0.08% and whiteness value of the feldspar concentrate is increased to 85.3%. According to the invention, a qualified raw material is provided for production of glass ceramic and special glass, and requirements for production of glass ceramic and special glass are fully met.
Description
Technical field
The invention belongs to natural feldspar ore purification field, particularly relate to the smart method of purification of a kind of real estate natural feldspar ore.
Background technology
Our company is a production high quality glass, the large-lot producer of quartz ceramic, the albite of some amount will be used every year, the albite that our company uses derives from the natural feldspar ore of real estate, the main moiety of real estate natural feldspar ore is: albite, quartz, rhombohedral iron ore, mica, chlorite, garnet, pyrite, a small amount of clay mineral etc., wherein albite content is greater than 88%, quartz content about 10%, rhombohedral iron ore content is less than 0.5%, mica content is less than 0.5%, other mineral total content about 1%, raw ore is carried out XRF multielement analysis, result is as table 1-1 display.
Table 1-1 raw ore XRF multielement analysis result (%)
Fe in the raw ore of this spectra
2o
3content be 0.36%, Fe
2o
3comparatively large to the qualitative effects of product when burning glass, therefore need by purifying to remove the Fe in ore
2o
3to improve the quality of glassy product, and Fe
2o
3main tax exists in the mineral such as film, white mica, iron contamination mineral, chlorite, garnet, clay mineral, through crushing test, and real estate feldspar ore Fe
2o
3content increase along with the reduction of ore grain size, namely along with mineral granularity reduce impure mineral dissociate more abundant.Because the feldspar concentrate used requires Task-size Controlling-1.25+0.112mm, therefore, first passed through crushing raw ore before raw ore is purified, ore grinding, screening process obtains the mixture of concentrate and tailings, between the product granularity-1.25+0.112mm of control feldspar ore concentrate, then by cleaning, magnetic separation, flotation, floatation on mica totally four operations is purified, the iron-holder of the concentrate after purification can be down to 0.117% from 0.36%, but in some specific occasions, as production that is ceramic and special glass, high to the purity requirement of raw material, the iron-holder of concentrate is required to be down to less than 0.08%, the whiteness of raw ore is brought up to 85.3% by 60.1%, in order to reach this purpose, can to break chemical purification technique in increase by the basis of above-mentioned four operations, target product feldspar ore is made to reach the requirement of producing pottery and special glass.
Summary of the invention
The problem that the present invention mainly solves is to provide a kind of smart method of purification of natural feldspar ore, the method is by after real estate feldspar ore grinding, granularity of concentrate is controlled after-1.25+0.112mm, by scouring, magnetic separation, flotation, floatation on mica, chemical purification totally five operations purify, make target product feldspar ore reach the requirement of production very high quality glass.
The present invention can be achieved through the following technical solutions:
A smart method of purification for natural feldspar ore, is characterized in that being made up of following steps:
1, clean: after real estate feldspar ore grinding, granularity of concentrate is controlled after-1.25+0.112mm and ore pulp mixing, the melting concn of the ore of ore pulp and pulverizing controls between 60%-70%, then stirrer is sent into, control churning time is 10-30 minute, and the iron-holder of concentrate can be down to 0.334-0.313% by this operation.
2, magnetic separation: the ore pulp through cleaning operation is sent into Slon100 high gradient magnetic separator, adjust the magneticstrength in magnetic separator to be 0.6-1.4T, the flow velocity of ore pulp is 0.6cms
-1-1.4cms
-1, magnetic separator is 1-3 platform, magnetic separation 1-3 time, and the iron-holder of concentrate can be down to 0.216-0.178% by this operation.
3. flotation: flotation adopts H
2sO
4as floatation regulator, sodium oleate makes collecting agent, pore forming material made by No. two oil, and the concentration of ore pulp is adjusted to 20-40%, uses H
2sO
4adjust the pH value of ore pulp between 4.0-8.0, the consumption of sodium oleate is 300gt
-1-900gt
-1, No. two oily consumptions are 50gt
-1-90gt
-1, after flotation, the iron-holder of concentrate can be down to 0.161-0.153%.
4, floatation on mica: with H
2sO
4adjust agent, amino dodecane carries out floatation on mica deironing as collecting agent, and the concentration of ore pulp is adjusted to 20-40%, uses H
2sO
4adjust the pH value of ore pulp between 2.5-6.5, the consumption of collecting agent amino dodecane is between 60g/t-200g/t, and the iron-holder of concentrate can be down to 0.141-0.117% by this operation, and the whiteness value of ore is increased to 81.7%.
5, chemical purification: preparation mixing acid, with 1.0-1.5molL
-1hCl and 0.25-0.75molL
-1h
2c
2o
4pending concentrate and mixing acid are 30 DEG C by acidleach temperature by mixing, the ratio blending of solid-to-liquid ratio 2: 1, and acidleach 2-4 hour, can be reduced to 0.110-0.058% by spectra iron-holder, meet concentrate product F e
2o
3the requirement that content is less than 0.08%, can be promoted to 85.3% by raw ore whiteness.
Further technical scheme of the present invention is:
The melting concn of the ore pulp described in step 1 is 65%, and stirring the scouring time is 20 minutes, and the iron-holder of concentrate can be down to 0.313% by this operation.
Magneticstrength in magnetic separator described in step 2 is 1T, and the flow velocity of ore pulp is 1.0cms
-1, magnetic separator is 2, and magnetic separation number of times is 2 times, and the iron-holder of concentrate can be down to 0.178% by this operation.
The concentration of the ore pulp described in step 3 is 30%, uses H
2sO
4adjust the pH value of ore pulp 6.0, the consumption of sodium oleate is 750gt
-1, No. two oily consumptions are 70gt
-1, after flotation, the iron-holder of concentrate can be down to 0.153%.
The concentration of the mica flotation pulp described in step 4 is adjusted to 30%, uses H
2sO
4the pH value adjusting ore pulp is 3.5, and the consumption of collecting agent amino dodecane is 120g/t, and the iron-holder of concentrate can be down to 0.117% by this operation, and the whiteness value of ore is 81.7%.
The mixing acid prepared in chemical purification described in step 5 is with 1.5molL
-1hCl and 0.75molL
-1h
2c
2o
4ratio mixing, be 30 DEG C by pending concentrate and mixing acid by acidleach temperature, the ratio blending of solid-to-liquid ratio 2: 1, acidleach 3.5 hours, can be reduced to 0.058% by spectra iron-holder, raw ore whiteness can be promoted to 85.3%.
The invention has the beneficial effects as follows: the smart method of purification providing a kind of natural feldspar ore, the method has use general-purpose equipment, technique is simple, cost for purification is cheap, pollution-free exhaust gas emission and environmental protection, especially the iron-holder of feldspar concentrate can be down to 0.058%, the whiteness value of feldspar concentrate is increased to 85.3%, produce for high-end pottery and special glass and provide qualified raw material, meet the demand of pottery and special glass production fully, but chemical purification will use a large amount of acid, one is increase cost, two is cause acid solution to pollute, during glass therefore beyond production glass-ceramic and special glass, chemical purification technique can not be used.
Accompanying drawing explanation
Fig. 1 is the relation of magneticstrength and operation deironing rate, and X-coordinate is magnetic separation hop count, and ordinate zou is operation deironing Shuai ∕ %.
Fig. 2 is the relation of flow rate of pulp and operation deironing rate, and X-coordinate is ore pulp Liu Su ∕ cm ∕ s, and ordinate zou is operation deironing Shuai ∕ %.
Fig. 3 is the relation of magnetic separation hop count and operation deironing rate, and X-coordinate is magnetic separation hop count, and ordinate zou is operation deironing Shuai ∕ %.
Fig. 4 is the impact of pulp density on operation deironing rate, and X-coordinate is that Kuang starches Nong Du ∕ %, and ordinate zou is operation deironing Shuai ∕ %.
Fig. 5 is the impact of collector dosage on operation deironing rate, and X-coordinate is collecting agent Liang ∕ g ∕ t, and ordinate zou is operation deironing Shuai ∕ %.
Fig. 6 is the relation of operation deironing rate and slurry pH, and X-coordinate is slurry pH, and ordinate zou is operation deironing Shuai ∕ %.
Fig. 7 is operation deironing rate and frother dosages relation, and X-coordinate is pore forming material Liang ∕ g ∕ t, and ordinate zou is operation deironing Shuai ∕ %.
Fig. 8 is the relation of pulp density and operation deironing rate, and X-coordinate is that Kuang starches Nong Du ∕ %, and ordinate zou is operation deironing Shuai ∕ %.
Fig. 9 is the impact of flotation pH value on operation deironing rate, and X-coordinate is slurry pH, and ordinate zou is operation deironing Shuai ∕ %.
Figure 10 is the impact of collector dosage on operation deironing rate, and X-coordinate is collecting agent Liang ∕ g ∕ t, and ordinate zou is operation deironing Shuai ∕ %.
Figure 11 is spectra iron-holder after different acid treatment, and X-coordinate is different acid, and ordinate zou is refined ore Han Tie Liang ∕ %.
embodiment:
Embodiment
1, clean: the gangue mineral needing the impure mineral mainly iron content removed in feldspar ore, wherein part iron contamination is that film iron form covers spectra surface, need to remove this part iron contamination by the method for cleaning under higher pulp density, scouring shells power to remove the coverture of mineral surface by the mill between mechanical force and sand grains, reaches deimpurity effect through the operation such as desliming, dehydration.The present invention adopts mechanical scrub, uses ore pulp and feldspar ore to carry out rubbing and reach the object of cleaning, pulp density and the time of scouring to the scrub effect of feldspar removal of impurities as shown in table 2-1.
Table 2-1 scrub test result
From table 2-1, the best of the ore pulp of scrub test cleans concentration about 65%, concentrate Fe after scouring 20min
2o
3content be 0.313%, Fe compared with raw ore
2o
3content reduce by 0.047%, operation deironing rate 13.056%.
2 magnetic separation: the ultimate principle of magnetic separation is: the remove portion Fe obtained when step 1
2o
3ore and ore pulp mixture send into magnetic separator sorting space after, magnetic ore particle is magnetized under uneven the action of a magnetic field, thus be subject to the effect of magnetic attraction, it is made to inhale on magnetic medium, non magnetic ore due to the magnetic force be subject to very little, become non-magnetic separation product flow to go out, the sepn process of magnetic separation that Here it is; When mineral grain is by magnetic separator magnetic field, be subject to magnetic force f simultaneously
magneticwith mechanical force f
machine(gravity, hydro-flow thrust, resistance of medium, frictional force) acts on, magnetic force suffered by the ore particle that magnetic is stronger is greater than the mechanical force suffered by it, and magnetic force suffered by non magnetic ore particle is very little, so mechanical force is preponderated, due to act on magnetic force on various ore particle and mechanical force make a concerted effort different, make their running orbit also different, thus realize being separated.
Enable the mineral grain sorting of two kinds of different magnetic, following prerequisite must be possessed: a magneticstrength and the enough large non-uniform magnetic field of field gradient be had, the magnetic field force of enough customer service mechanical forces can be produced like this; Certain magnetic contrast to be had between mineral or material particles, namely must meet: K=X/x ' >1, in formula, K is the ratio of the specific susceptibility of two kinds of mineral or material, and X is the specific susceptibility of magnetic mineral, the specific susceptibility that X ' is non magnetic ore; The ratio acting on magnetic force on mineral grain and mechanical force must meet: for magnetic-particle f
magnetic> ∑ f
machine, for non-magnetic particle f
magnetic '< ∑ f
machine ', the magnetic force of f magnetic f magnetic in formula ' suffered by magnetic and non-magnetic particle, ∑ f
machine∑ f
machine 'making a concerted effort of the mechanical force contrary with magnetic force direction suffered by magnetic and non-magnetic particle.Magnetic separation is the magnetic contrast based on different components in separated material, and adopt the technology that different for material magnetic component is separated by dissimilar magnetic separator, the present invention adopts Slon100 high gradient magnetic separator to carry out magnetic separation to real estate feldspar ore stone.
(1) magneticstrength is on the impact of magnetic separation effect: be fixed as 1.0cms with flow rate of pulp
-1, magneticstrength is respectively 0.6T, 0.8T, 1.0T, 1.2T and 1.4T, only carries out a stages of magnetic separation, and magneticstrength and deironing rate result are as shown shown in 2-2:
Table 2-2 magneticstrength and deironing rate result
Slowed down from the increase trend of operation deironing rate after table 2-2 and Fig. 1, magnetic separation field intensity 1.0T, therefore optimum field conditions is 1.0T, gained concentrate Fe with this understanding
2o
3content be 0.219%, operation deironing rate is 30.032%.
(2) pass of flow rate of pulp deironing rate is: magneticstrength is fixed as 1.0T, and flow rate of pulp is respectively 0.6cms
-1, 0.8cms
-1, 1.0cms
-1, 1.2cms
-1, 1.4cms
-1, only carry out a stages of magnetic separation, deironing the results are shown in Table 2-3:
Table 2-3 flow rate of pulp test-results
Be 1cms by the flow rate of pulp of table 2-3 and Fig. 2 known magnetic separation
-1operation deironing rate is maximum, gained concentrate Fe
2o
3content 0.219%, operation deironing rate be 30.032%.
(3) magnetic separation hop count test: magneticstrength and flow rate of pulp are fixed as 1.0T and 1.0cms respectively
-1, carry out one section, two sections, three stages of magnetic separation respectively, magnetic separation hop count test-results is in Table 2-4:
Table 2-4 magnetic separation hop count test-results
From table 2-4 and Fig. 3, two sections of magnetic will be got well compared with a stages of magnetic separation effect, operation deironing rate is increased to 43.131% by 30.032%, and the operation deironing rate of three stages of magnetic separation is less compared with two stages of magnetic separation increasing amount, substantially without change, therefore only need twice magnetic separation can obtain concentrate Fe
2o
3content be 0.178%, operation deironing rate 43.131%.
(4) different grain size iron removal by magnetic separation rate: by testing the magnetic separation of different grain size feldspar, understand the liberation degree of minerals of magnetic mineral in different grain size feldspar, under the condition of field intensity 1.0T, flow rate of pulp 1.0cm/s, pulse 400r/min, one stages of magnetic separation test is carried out to different grain size feldspar raw ore, the results are shown in Table 2-5:
Table 2-5 different grain size magnetic separation test-results
From table 2-5, reduction impure mineral along with mineral granularity dissociates more abundant and this spectra magnetic mineral and minerals when granularity is-0.15+0.112 dissociate situation better, therefore the ratio considering to increase these section mineral when Granularity Distribution arranges to be conducive to mineral purification.
In sum: the top condition of magnetic separation is field intensity 1.0T, flow rate of pulp 1.0cm/s, pulse 400r/min, carry out two stages of magnetic separation under the same conditions and obtain concentrate Fe
2o
3content be 0.178%, with raw ore Fe
2o
30.36% compares reduction by 0.182%, operation deironing rate is 50.556%, removal effect for iron is obvious, according to magnetic mineral in the distribution situation of each grade and consult glass industry related data: feldspar grain size distribution for-1.25+0.6mm account for 5%, that-0.6+0.15mm accounts for 50% ,-0.15+0.112mm accounts for is 45% comparatively suitable.
3, flotation: mineral floating is the physical and chemical process of a kind of complexity of carrying out in airwater mist cooling system, it is solid, gas, liquid three phase boundary carries out, between mineral, can the difference of flotability effectively sorting have important impact to mineral, the flotability of mineral and the wettability of mineral surface, the Nomenclature Composition and Structure of Complexes of mineral, the electrical of mineral surface waits close relation, the wettability of mineral surface affects wetting ability or the hydrophobicity of mineral surface, thus affect the flotability of mineral, the Nomenclature Composition and Structure of Complexes of mineral determines the bond energy of mineral surface, affect the flotability of mineral, absorption is flotation Minerals, medicament, the principal mode of bubble interaction, along with whole floatation process, in flotation pulp, the dispersion of ore particle and gathering are to its flotation behavior important.
Removal of iron with flotation rate: flotation iron contamination to the factor that flotation results has an impact is: pulp density, pH value, collecting agent and frother dosages, present method adopts H
2sO
4as floatation regulator, sodium oleate makes collecting agent, pore forming material made by No. two oil.
(1) pulp density test: use H
2sO
4slurry pH is adjusted to 6, and sodium oleate and No. two oily consumptions are respectively 800gt
-1and 70gt
-1, be respectively the condition of 20%, 25%, 30%, 35% and 40% at pulp density under, Removal of iron with flotation carried out to concentrate after two stages of magnetic separation, the results are shown in Table 2-6:
Table 2-6 pulp density test-results
From table 2-6 and Fig. 4, concentrate Fe when flotation pulp concentration is 30%
2o
3content be 0.158%, deironing rate is 11.236%.
(2) collector dosage test: getting pulp density is 30%, the oily consumption 70gt of No. two, pore forming material
-1, pH value is adjusted to about 6, is respectively 300gt at collecting agent sodium oleate consumption
-1, 450gt
-1, 600gt
-1, 750gt
-1and 900gt
-1under condition, Removal of iron with flotation is carried out to concentrate after scouring, two stages of magnetic separation, the results are shown in Table 2-7:
The test of table 2-7 flotation iron contamination collector dosage
From table 2-7 and Fig. 5, collecting agent sodium oleate consumption is greater than 750gt
-1it is quite slow that Shi Zuoye deironing rate increases trend, in conjunction with industrial production practical situation, and collecting agent sodium oleate consumption 750gt
-1time obtain concentrate Fe
2o
3content is 0.155%, operation deironing rate 12.921%.
(3) pH value of flotation pulp is on the impact of deironing rate: getting pulp density is 30%, and sodium oleate and No. two oily consumptions are respectively 750gt
-1and 70gt
-1, under pH respectively 4.0,5.0,6.0,7.0 and 8.0 conditions, carry out flotation to concentrate after scouring, two stages of magnetic separation, test-results is in Table 2-8:
Table 2-8 flotation pulp pH test-results
From table 2-8 and Fig. 6, when after two stages of magnetic separation, the pH of flotation ferrotitanium is 6.0, concentrate Fe
2o
3content is 0.153%, operation deironing rate is 14.045%.
(4) frother dosages test: getting pulp density is 30%, collecting agent sodium oleate consumption 750gt
-1, pH is adjusted to about 6, is respectively 50gt at pore forming material No. two oily consumptions
-1, 60gt
-1, 70gt
-1, 80gt
-1and 90gt
-1condition under, to scouring, concentrate carries out Removal of iron with flotation after two stages of magnetic separation, the results are shown in Table 2-9:
Table 2-9 infusion consumption test-results
From table 2-9 and Fig. 7, pore forming material pine camphor oil consumption is 70gt
-1during optimum, concentrate Fe
2o
3content is 0.153%, operation deironing rate is 14.045%.Shown by above flotation iron contamination mineral test: flotation concentrate Fe
2o
3content is 0.153%, also needs to remove mica mineral by flotation, just can make Fe
2o
3content is lower than 0.153%.
4, floatation on mica: with H
2sO
4adjust agent, amino dodecane carries out floatation on mica deironing as collecting agent.
(1) impact of pulp density: use adjusting agent H
2sO
4adjust slurry pH to be about 3.5, collecting agent amino dodecane consumption is 120g/t, and the deironing of adjustment pulp density the results are shown in Table shown in 2-10:
Table 2-10 floatation on mica pulp density test-results
From table 2-10 and Fig. 8, during reverse flotation mica pulp density 30%, feldspar concentrate Fe
2o
3content is 0.123% operation deironing rate is 30.899%;
(2) pH value is on the impact of Removal of iron with flotation: pulp density 30%, collecting agent amino dodecane 120g/t, changes adjusting agent H
2sO
4consumption thus change flotation pH value, investigate its impact on flotation, choose pH value 2.5,3.5,4.5,5.5,6.5, deironing the results are shown in Table 2-11:
Table 2-11pH value is on the impact of mica flotation
From table 2-11 and Fig. 9, during floatation on mica, slurry pH is that city 2.5 flotation effect is poor, feldspar concentrate Fe during pH value 3.5
2o
3content is 0.123% operation deironing rate is 30.899%.
(2) floatation on mica collector dosage test: adjust pulp density 30%, adjusting agent H
2sO
4 adjustslurry pH is 3.5, and the consumption changing collecting agent amino dodecane is to investigate its impact on flotation results, and amino dodecane consumption chooses 60g/t, 90g/t, 120g/t, 160g/t, 200g/t, and deironing test-results is in Table 2-12:
Table 2-12 floatation on mica collector dosage test-results
From table 2-12 and Figure 10, less collector dosage reduces collecting ability, and along with collector dosage increases, operation deironing rate increases gradually but increase trend slows down, and shows the feldspar concentrate Fe when collector dosage is 160g/t by test-results
2o
3content is 0.117%, operation deironing rate 34.270%.
Floatation on mica top condition is: pulp density 30%, collecting agent amino dodecane consumption 160g/t, adjusting agent H
2sO
4slurry pH 3.5, by feldspar ore after scouring, magnetic separation and joint flotation technology process, record whiteness value 81.7%, compare with raw ore whiteness 60.1%, whiteness value improves 35.94%.
In sum: after two stages of magnetic separation, Removal of iron with flotation optimal conditions are: pulp density 30%, pH value 6.0, the oily consumption 70gt of No. two, pore forming material
-1, collecting agent sodium oleate consumption 750gt
-1, feldspar concentrate Fe
2o
3content be 0.157%, with scouring, compared with two stages of magnetic separation feldspar concentrate, Fe
2o
3content reduce by 0.021%; After two stages of magnetic separation, floatation on mica deironing optimal conditions are: pulp density 30%, collecting agent amino dodecane consumption 160gt
-1, pH value 3.5, feldspar concentrate Fe
2o
3content 0.117%, compared with two stages of magnetic separation feldspar concentrate, Fe
2o
3content reduce by 0.061%.
4, chemical purification: when producing high-grade ceramic and glasswork, when above-mentioned three step process deironing can not reach technical requirements, chemical purification technique need be carried out again, to meet high-grade ceramic, glass raw materials technical requirements.
Chemical purification technique and acid leaching process: with acidleach temperature 30 DEG C, leaching time 3.0h, solid-to-liquid ratio 2:1, select HCl, H2SO4, H2C2O4 tri-kinds of acid, concentration 1.5mol/L, deironing the results are shown in Figure 11, and as shown in Figure 11, the de-ferrous effect of HCl is best, is secondly H
2sO
4, be H again
2c
2o
4.therefore Chemical Leaching selects HCl to be Chemical Leaching liquid.HCl concentration is on the impact of acidleach de-ferrous effect: acidleach temperature 30 DEG C, leaching time 3.0h, solid-to-liquid ratio 2:1, changes HCl concentration, and to investigate its impact on de-ferrous effect, test-results is in Table 2-13:
Table 2-13HCl concentration leaching test result
From table 2-13, along with HCl concentration increases, concentrate iron-holder is reducing gradually, and the clearance of iron progressively increases, and along with concentration of hydrochloric acid increases further, the increase trend of deironing rate slows down, in conjunction with the problem such as real cost and environmental protection, and HCl concentration 1.5molL
-1be advisable.
Extraction temperature: with leaching time 3.0h, solid-to-liquid ratio 2: 1, HCl concentration 1.5molL
-1, change Leaching reaction temperature, to investigate the impact of temperature for Leaching reaction deironing.Test-results is in Table 2-14:
Table 2-14 temperature of reaction test-results
From table 2-14, temperature is larger for Leaching reaction impact, the higher leaching effect of temperature is better, and chemical reaction is relevant with rate constant K, and K value can obtain according to Arrhenius formulae discovery, more the larger chemical reaction of high-k is faster for temperature, along with temperature is increased to a certain degree, deironing rate increase trend slow down, reason be temperature high cause acid volatilization and affect leaching effect, considered in conjunction with factors such as actual productions by test-results, more suitable during Leaching reaction temperature 30 DEG C.
Extraction time: acid adjustment leaching temperature 30 DEG C, solid-to-liquid ratio 2: 1, HCl concentration 1.5molL
-1, change the Leaching reaction time, to investigate the impact of time for Leaching reaction.Test-results is in Table 2-15:
Table 2-15 reaction time test result
More than test proves the increase along with the reaction times, and Leaching reaction is more thorough, and along with the increase feldspar concentrate iron-holder in reaction times reduces, deironing rate trend slows down, and when being 3.5h by the table 2-15 known reaction times, leaching effect is best.
Mixing acid leaching test: oxalic acid (C
2h
2o
4h
2o) be can be used for one of the most effective organic acid of dissolved iron oxide compound, environmental pollution is relatively little, and it also has good coordination and complex ability; In single Ore Leaching experiment, the leaching effect of HCl is ideal; H
2sO
4corrodibility is stronger than HCl, and the H that concentration is higher
2sO
4also H can be made
2c
2o
4resolve into CO
2, CO and H
2o, comprehensive above factor, selects HCl and H
2c
2o
4carry out mixing acid leaching test, test reaction times 2.5h, temperature of reaction 30 DEG C, solid-to-liquid ratio 2: 1, changes HCl and H
2c
2o
4concentration, test-results is as table 2-16:
Table 2-16 mixing acid pickle test result
From table 2-16 data analysis, compared with single Ore Leaching, mixing acid leaching effect obviously will be got well, as HCl concentration 1.5molL
-1, H
2c
2o
4concentration 0.75molL
-1time spectra iron-holder can be reduced to about 0.058%, as HCl concentration 1.0molL
-1, H
2c
20
4concentration 0.25molL
-1time spectra iron-holder can be reduced to 0.126%, reduce HCl working concentration, thus decrease environmental pollution, from the viewpoint of economy and environmental protection etc., mixing acid leaching concentration is HCl is 1.0molL
-1, H
2c
2o
40.25molL
-1be advisable, now feldspar concentrate Fe
2o
3content is 0.126%.
In sum: after a stages of magnetic separation, non magnetic ore feldspar is raw material, HCl-H is adopted
2c
2o
4mixing acid leaches, and sour consumption is HCl is 1.0molL
-1, H
2c
2o
40.25molL
-1, spectra iron-holder can be reduced to about 0.126%, meet concentrate product F e
2o
3the requirement that content is less than 0.15%, can be promoted to 85.3% by raw ore whiteness 60.1%; If there is the high-quality feldspar market requirement, then HCl concentration 1.5molL
-1, H
2c
2o
4concentration 0.75molL
-1time feldspar iron level can be reduced to 0.058%.
Claims (7)
1. the smart method of purification of a real estate natural feldspar ore, the method be by iron-holder be 0.36% real estate feldspar ore grinding after obtain the mixture of concentrate and tailings, granularity of concentrate controls at-1.25+0.112mm, by scouring, magnetic separation, flotation, floatation on mica, chemical purification totally five operations purify, make the iron-holder of target product lower than 0.08%, to reach the requirement of production glass-ceramic and special glass, the feature of this method of purification is:
Step (1) is cleaned: after real estate feldspar ore grinding, granularity of concentrate is controlled after-1.25+0.112mm and ore pulp mixing, the melting concn of the ore of ore pulp and pulverizing controls between 60%-70%, then stirrer is sent into, control churning time is 10-30 minute, and the iron-holder of concentrate can be down to 0.334-0.313% by this operation;
Step (2) magnetic separation: the ore pulp through cleaning operation is sent into Slon100 high gradient magnetic separator, adjust the magneticstrength in magnetic separator to be 0.6-1.4T, the flow velocity of ore pulp is 0.6cms
-1-1.4cms
-1, magnetic separator is 1-3 platform, and the number of times of magnetic separation is 1-3 time, and the iron-holder of concentrate can be down to 0.216-0.178% by this operation;
Step (3) flotation: flotation adopts H
2sO
4as floatation regulator, sodium oleate makes collecting agent, pore forming material made by No. two oil, and the concentration of ore pulp is adjusted to 20-40%, uses H
2sO
4adjust the pH value of ore pulp between 4.0-8.0, the consumption of sodium oleate is 300gt
-1-900gt
-1, No. two oily consumptions are 50gt
-1-90gt
-1, after flotation, the iron-holder of concentrate can be down to 0.161-0.153%;
Step (4) floatation on mica: with H
2sO
4adjust agent, amino dodecane carries out floatation on mica deironing as collecting agent, and the concentration of ore pulp is adjusted to 20-40%, uses H
2sO
4adjust the pH value of ore pulp between 2.5-6.5, the consumption of collecting agent amino dodecane is between 60g/t-200g/t, and the iron-holder of concentrate can be down to 0.141-0.117% by this operation, and the whiteness value of ore is increased to 81.7%;
Step (5) chemical purification: preparation mixing acid, with 1.0-1.5molL
-1hCl and 0.25-0.75molL
-1h
2c
2o
4mixing, be 30 DEG C by pending concentrate and mixing acid by acidleach temperature, the ratio blending of solid-to-liquid ratio 2: 1, acidleach 2-4 hour, can be reduced to 0.110-0.058% by spectra iron-holder, meet concentrate product F e
2o
3the requirement that content is less than 0.08%, and raw ore whiteness is promoted to 85.3%.
2. the method for purification of the natural feldspar ore of a kind of real estate according to claim 1, its step (1) feature is: the melting concn of described ore pulp is 65%, stirring the scouring time is 20 minutes, and the iron-holder of concentrate can be down to 0.313% by this operation.
3. the method for purification of the natural feldspar ore of a kind of real estate according to claim 1, its step (2) feature is: the magneticstrength in described magnetic separator is 1T, and the flow velocity of ore pulp is 1.0cms
-1, magnetic separator is 2, and magnetic separation number of times is 2 times, and the iron-holder of concentrate can be down to 0.178% by this operation.
4. the method for purification of the natural feldspar ore of a kind of real estate according to claim 1, its step (3) feature is: the concentration of described ore pulp is adjusted to 30%, uses H
2sO
4adjust the pH value of ore pulp 6.0, the consumption of sodium oleate is 750gt
-1, No. two oily consumptions are 70gt
-1, after flotation, the iron-holder of concentrate can be down to 0.153%.
5. the method for purification of the natural feldspar ore of a kind of real estate according to claim 1, its step (4) feature is: the concentration of described floatation on mica ore pulp is adjusted to 30%, uses H
2sO
4the pH value adjusting ore pulp is 3.5, and the consumption of collecting agent amino dodecane is 120g/t, and the iron-holder of concentrate can be down to 0.117% by this operation, and the whiteness value of ore is 81.7%.
6. the method for purification of the natural feldspar ore of a kind of real estate according to claim 1, its step (5) feature is: the mixing acid prepared in described chemical purification is with 1.5molL
-1hCl and 0.75molL
-1h
2c
2o
4the mixture of ratio mixing, be 30 DEG C by pending concentrate and mixing acid by acidleach temperature, the ratio blending of solid-to-liquid ratio 2: 1, acidleach 3.5 hours, can be reduced to 0.058% by spectra iron-holder, raw ore whiteness can be promoted to 85.3%.
7. the using method of the natural feldspar ore of real estate after essence is purified is: use as the starting material manufacturing glass-ceramic or special glass.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259522A (en) * | 2015-10-15 | 2016-01-20 | 衢州华友钴新材料有限公司 | Method for detecting the magnetism of weakly-magnetic mineral |
| CN107585775A (en) * | 2017-11-05 | 2018-01-16 | 滁州格锐矿业有限责任公司 | A kind of bleaching process of sericite |
| CN109019619A (en) * | 2018-08-31 | 2018-12-18 | 贺州市骏鑫矿产品有限责任公司 | A method of reducing feldspar in powder conductivity |
| CN109133075A (en) * | 2018-08-31 | 2019-01-04 | 贺州市骏鑫矿产品有限责任公司 | A kind of production method of potassium feldspar |
| CN109261349A (en) * | 2018-08-31 | 2019-01-25 | 贺州市骏鑫矿产品有限责任公司 | A kind of purification method of whitening of albite |
| CN110898956A (en) * | 2019-11-06 | 2020-03-24 | 乐山市南联环资科技有限责任公司 | Process for producing feldspar for glaze by utilizing feldspar tailings |
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2014
- 2014-03-18 CN CN201410101237.9A patent/CN104925822A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259522A (en) * | 2015-10-15 | 2016-01-20 | 衢州华友钴新材料有限公司 | Method for detecting the magnetism of weakly-magnetic mineral |
| CN107585775A (en) * | 2017-11-05 | 2018-01-16 | 滁州格锐矿业有限责任公司 | A kind of bleaching process of sericite |
| CN109019619A (en) * | 2018-08-31 | 2018-12-18 | 贺州市骏鑫矿产品有限责任公司 | A method of reducing feldspar in powder conductivity |
| CN109133075A (en) * | 2018-08-31 | 2019-01-04 | 贺州市骏鑫矿产品有限责任公司 | A kind of production method of potassium feldspar |
| CN109261349A (en) * | 2018-08-31 | 2019-01-25 | 贺州市骏鑫矿产品有限责任公司 | A kind of purification method of whitening of albite |
| CN109019619B (en) * | 2018-08-31 | 2020-05-22 | 贺州市骏鑫矿产品有限责任公司 | Method for reducing conductivity of potassium feldspar powder |
| CN109133075B (en) * | 2018-08-31 | 2020-09-15 | 贺州市骏鑫矿产品有限责任公司 | Production method of potassium feldspar |
| CN110898956A (en) * | 2019-11-06 | 2020-03-24 | 乐山市南联环资科技有限责任公司 | Process for producing feldspar for glaze by utilizing feldspar tailings |
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Application publication date: 20150923 |