CN109013057A - A method of separating feldspar and quartz from granite - Google Patents
A method of separating feldspar and quartz from granite Download PDFInfo
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- CN109013057A CN109013057A CN201810987774.6A CN201810987774A CN109013057A CN 109013057 A CN109013057 A CN 109013057A CN 201810987774 A CN201810987774 A CN 201810987774A CN 109013057 A CN109013057 A CN 109013057A
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- feldspar
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- quartz
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/30—Combinations with other devices, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
- B07C5/342—Sorting according to other particular properties according to optical properties, e.g. colour
- B07C5/3425—Sorting according to other particular properties according to optical properties, e.g. colour of granular material, e.g. ore particles, grain
Abstract
The method of the present invention relates to a kind of from granite separating feldspar and quartz, belong to separation ore-sorting technical field, this method includes muck, ore grinding, sub-sieve, photoelectricity color sorting, six processes of powder processed and magnetic separation, using physical technique by granite andesine, quartz, magnetisable material is completely separated, period is without any exhaust gas, the substance that waste water etc. pollutes environment generates, floatation process in the prior art is effectively prevented to endanger environment bring, and utilize the feldspar after this method sorting purification, quartz is entirely capable of replacing natural feldspar, application of the quartz in ceramic industry, sufficient raw in this method, suitable for large-scale industrial production.
Description
Technical field
The invention belongs to separation ore-sorting technical fields, and in particular to a kind of separating feldspar from granite and quartz
Method.
Background technique
Potassium albite, since fusing point is low, chemical stability is good between 1100-1300 DEG C, with quartz and silicate congruent melting
When have a fluxing action, reaction forms low-melting-point glass substance, can reduce the firing temperature of ceramic, promote the burning of ceramic
Knot, feldspar plays non-plastic raw material in blank before sintering, improves the hydrophobicity of blank, shortens the drying time of green body, subtracts
The dry of few green body shrinks and deforms.In ceramic glaze, after feldspar glass melt is cooling after melting, the glass of glaze is formd
Substance increases the transparency of glaze, improves the glossiness and service performance of glaze paint.But Production of Ceramics to be used in nature
High-quality feldspar raw material goods and materials it is deficient, quality deteriorates increasingly, considers from ceramic industry long term growth, it is necessary to find feldspar raw material generation
Articles.
Different types of granite is all the Minerals And Rocks based on feldspar, quartz, and domestic number is with thousand granites
Material processing enterprise is in exploitation process, quarry stone after all generating a large amount of waste material and exploitation, these tailings and quarry stone
In the presence of, cause serious pollution to environment, although the chemical component of these granite waste materials be mainly potassium, it is albite, quartz, black
Color mica, but due to K in granite waste material2O、Na2O grade is low, and harmful components Fe2O3、TiO2It is higher, therefore cannot be replaced
Ceramic glaze is directly used in, in blank for feldspar, and a small amount of preferable granite mine of quality can only also add part and make pottery for low side
Among porcelain billet material, prevent a large amount of granite waste material causes the wasting of resources from rationally utilizing and handling.Currently, domestic existing
Having granite separating feldspar, quartzy purification technique is mainly floatation process, still, there is a large amount of harmful chemicals in floatation process
With the presence of harmful substance, environment is caused great harm, and from the point of view of separation results, the grade of K, Na improve also with regard to 1-2
Percentage point, be not achieved completely sorting purification effect, therefore, be badly in need of one kind can improve K, Na grade and
Slave granite in separating feldspar and quartz method.
Summary of the invention
In view of this, the method for the purpose of the present invention is to provide a kind of from granite separating feldspar and quartz.
In order to achieve the above objectives, the invention provides the following technical scheme:
1, a kind of method of separating feldspar from granite and quartz, described method includes following steps:
(1) muck；
(2) ore grinding: will through step (1), treated that granite is put into sand pelletizer processed carries out ore grinding, obtain grain
Diameter is less than or equal to the granite block of 8mm；
(3) sub-sieve: the granite block by partial size in step (2) less than or equal to 8mm is put into screen-dividing machine, is obtained respectively
Partial size is less than 0.38mm, partial size is more than or equal to 0.38mm and is less than 0.83mm, partial size more than or equal to 0.83mm less than 2.36mm and grain
Diameter is more than or equal to 2.36mm and is less than tetra- kinds of granite blocks of 8mm；
(4) partial size obtained in step (3) photoelectricity color sorting: is more than or equal to 0.38mm is less than 0.83mm, partial size is greater than etc.
It is less than 2.36mm in 0.83mm and partial size is more than or equal to 2.36mm and is respectively put into photoelectricity color sorting less than tri- kinds of granite blocks of 8mm
Photoelectricity color sorting is carried out in machine, finally obtains feldspar and quartz respectively；
(5) powder processed；The feldspar obtained in step (4) and quartz are pulverized respectively, obtain feldspar powder and silica flour；
(6) magnetic separation: the feldspar powder and silica flour that obtain in step (5) are respectively put into magnetic separator and carry out magnetic separation, institute is made
State Fe in feldspar powder and silica flour2O3Content, which is respectively less than, is equal to 0.03-0.1wt%.
Further, in step (1), the muck is specially that granite is broken into partial size less than or equal to 400mm's
Material block.
Further, in step (2), the sand pelletizer processed is drum-type sand pelletizer, and the drum-type sand is granulated
The barrel diameter of machine is 2500mm, barrel lenght 4000mm, main engine power 75kW, revolving speed 25-30r/min.
Further, the cylinder inboard wall of the drum-type sand pelletizer posts corundum liner plate.
Further, the hardness of the corundum liner plate is greater than 9 grades.
Further, in step (4), when the photoelectricity color sorting, used photoelectric colour sorter has can be in 7000-
10000 points of CCD camera lenses for being scanned capture, frequency review one's lessons by oneself compound solenoid valve less than or equal to 1600Hz's；The photoelectricity color sorting
The resolution accuracy of machine is heterochromatic less than 200 mesh, conveyor belt speed 2.4-2.75m/s, and color background is set as blue when selecting feldspar
Red, color background is set as red when choosing is quartzy.
Further, in step (6), the magnetic separation divides three phases to complete, first magnetic force be 5000-6000 Gauss forever
Magnetic separation is carried out in magnetomechanical, is then carried out magnetic separation in the case where magnetic force is the plate magnetic separator of 8000-11000 Gauss, is finally in magnetic force
Magnetic separation is carried out under the pulsating high gradient magnetic separator with vertical ring of 13000-14000 Gauss.
The beneficial effects of the present invention are: the side of the present invention provides a kind of from granite separating feldspar and quartz
Method, this method all use physical technique to be completely separated granite andesine, quartz, magnetisable material, effectively prevent
Floatation process endangers environment bring in the prior art.During the separation process, by adjusting the technological parameter in each stage, make most
The feldspar and quartz isolated eventually reach top grade grade, and then can replace natural top grade feldspar and quartz.Wherein, in ore grinding
When, it limits using barrel diameter as 2500mm, barrel lenght 4000mm, main engine power 75kW, revolving speed 25-30r/min
Drum-type sand pelletizer, it is ensured that it is final to obtain separation thoroughly with the granite block of torispherical state, and powder
Body is few, improves identification and resolution ratio for subsequent photoelectricity color sorting, because diameter is excessive when barrel diameter is more than or less than 2500m
The separation of granite block be not thorough, the too small granite block of diameter mutually forms Frotteurism, it is serious to cross powder, and work as
Cylinder is too long or too short, can generate overground behavior, causes that powder is more, the separation of granite block is not thorough, and low output is asked
Topic.In sub-sieve, granite block is subjected to stacking by particle size interval, it is ensured that the effect of subsequent photoelectricity color sorting, in addition,
It can be further improved the effect of photoelectricity color sorting using photoelectric colour sorter specific in the present invention, guarantee the feldspar being finally recovered out
With the purity of quartz.Finally, magnetic separation divides three phases to complete, the first stage is to remove the machinery iron of production process abrasion as mesh
, second stage is for the purpose of selecting mica ferromagnetism, weak magnetic substance, and the phase III is to select the faint magnetism of ultra-fine mica
For the purpose of substance, such sublevel stages of magnetic separation can guarantee Fe in the feldspar being finally recovered out and quartz2O3Content, which is respectively less than, to be equal to
0.03-0.1wt% guarantees the quality degree of purity of product.This method is generated without the substance of the pollution environment such as any exhaust gas, waste water,
And be entirely capable of replacing the application of natural feldspar, quartz in ceramic industry using feldspar, the quartz after this method sorting purification, it should
Sufficient raw in method is suitable for large-scale industrial production.
Detailed description of the invention
In order to keep the purpose of the present invention, technical scheme and beneficial effects clearer, the present invention provides following attached drawing and carries out
Illustrate:
Fig. 1 is the domestic granite shape appearance figure in Wulanchabu League of Inner Mongolia city；
Fig. 2 is the domestic granite in Wulanchabu League of Inner Mongolia city through 1200 DEG C of calcined shape appearance figures；
Fig. 3 is the shape appearance figure of the feldspar obtained after the processing of photoelectricity color sorting in embodiment 1；
Fig. 4 is the shape appearance figure of the quartz obtained after the processing of photoelectricity color sorting in embodiment 1；
Fig. 5 is the shape appearance figure of the feldspar obtained after magnetic separation is handled in embodiment 1；
Fig. 6 is the shape appearance figure of the quartz obtained after magnetic separation is handled in embodiment 1；
Fig. 7 is the shape appearance figure of the black mica obtained after magnetic separation is handled in embodiment 1；
Fig. 8 be in embodiment 1 feldspar that is obtained after magnetic separation is handled again through 1200 DEG C of calcined shape appearance figures；
Fig. 9 is quartzy again through 1200 DEG C of calcined shape appearance figures for what is obtained after magnetic separation is handled in embodiment 1.
Specific embodiment
Below by a preferred embodiment of the present invention will be described in detail.
Embodiment 1
It is (as shown in Figure 1) for separation object with the domestic granite in Inner Mongol Wulanchabu, it is separated from the granite
Feldspar and quartz, by the granite it is separately sampled send the excellent rich ceramic test center of Wuhan University of Technology, Foshan, Tangshan ceramics detect
Center, Shenyang Long Ji magnetoelectricity limited liability company laboratory, Changsha letter are detected along mining industry Co., Ltd etc., and comprehensive analysis is as follows,
By mass percentage, contain Al in the granite2O3: 14.6%-17.86%, SiO2: 73.08%-78.02%, Fe2O3:
0.90%-1.47%, CaO:0.78%-1.22%, MgO:0.05%-0.10%, K2O:4.72%-5.24%, Na2O:
3.45%-3.55%, TiO2: 0.02%-1.22%.The granite is milled after 1200 DEG C of calcinings (as shown in Figure 2), whiteness
For 4.9-11.3.Huang gang rock andesine and quartz are separated with the following method:
(1) granite muck: is broken into the material block that partial size is less than or equal to 400mm；
(2) ore grinding: will through step (1), treated that granite is put into that barrel diameter is 2500mm, barrel lenght is
4000mm, main engine power 75kW, revolving speed 30r/min, cylinder inboard wall post the drum-type system that hardness is greater than 9 grades of corundum liner plates
Ore grinding is carried out in sand pelletizer, obtains the granite block that partial size is less than or equal to 8mm；
(3) sub-sieve: the granite block by partial size in step (2) less than or equal to 8mm is put into screen-dividing machine, is obtained respectively
Partial size is less than 0.38mm, partial size is more than or equal to 0.38mm and is less than 0.83mm, partial size more than or equal to 0.83mm less than 2.36mm and grain
Diameter is more than or equal to 2.36mm and is less than tetra- kinds of granite blocks of 8mm；
(4) partial size obtained in step (3) photoelectricity color sorting: is more than or equal to 0.38mm is less than 0.83mm, partial size is greater than etc.
It is less than 2.36mm in 0.83mm and partial size is more than or equal to 2.36mm and is respectively put into photoelectricity color sorting less than tri- kinds of granite blocks of 8mm
Photoelectricity color sorting is carried out in machine, is finally obtained respectively feldspar (as shown in Figure 3) and quartzy (as shown in Figure 4)；Used photoelectric color
The CCD camera lens of capture can be scanned in 7000-10000 point by selecting machine to have, and frequency is compound less than or equal to reviewing one's lessons by oneself for 1600Hz
The resolution accuracy of solenoid valve, the photoelectric colour sorter is heterochromatic less than 200 mesh, and conveyor belt speed is equal to 2.75m/s, face when selecting feldspar
Color background is set as blue red, and color background is set as red when choosing is quartzy；
(5) powder processed；The feldspar obtained in step (4) and quartz are pulverized respectively, obtain feldspar powder and silica flour；
(6) magnetic separation: by the feldspar powder and silica flour that are obtained in step (5) first respectively in the permanent magnetism that magnetic force is 6000 Gausses
Magnetic separation is carried out in machine, is then carried out magnetic separation in the case where magnetic force is the plate magnetic separator of 10000 Gausses respectively, is finally in magnetic force respectively
Magnetic separation is carried out under the pulsating high gradient magnetic separator with vertical ring of 14000 Gausses, finally obtains feldspar (as shown in Figure 5), quartz (such as Fig. 6
It is shown) and black mica (as shown in Figure 7).
The feldspar obtained after magnetic separation, quartz are detected respectively, testing result is as follows:
By mass percentage, contain in the feldspar after magnetic separation: Al2O3: 18.70%, SiO2: 65.88%, Fe2O3:
0.07%, CaO:0.70%, MgO:0.06%, K2O:9.60%, Na2O:4.40%, TiO2: 0.01%.Fe in the feldspar2O3Contain
Amount is within the scope of 0.03-0.1wt%, and testing its whiteness through 1200 DEG C of calcinings after cake processed is 68-70, calcined product
See Fig. 8.
By mass percentage, contain in the quartz after magnetic separation: Al2O3: 0.90%, SiO2: 98%, Fe2O3:
0.03%, CaO:0.26%, MgO:0.07%, K2O:0.25%, Na2O:0.25%, TiO2: 0.06%.Fe in the quartz2O3Contain
Amount is within the scope of 0.03-0.1wt%, and testing its whiteness through 1200 DEG C of calcinings after cake processed is 95, and calcined product is shown in
Fig. 9.
Therefore, the feldspar and quartz isolated from granite by method in the present invention can replace natural top grade feldspar and
Quartz.
In the present invention, when ore grinding, the revolution of drum-type sand pelletizer can also be 25-30r/ other than for 30r/min
Any value in min；When photoelectricity color sorting, photoelectric colour sorter conveyor belt speed is in addition to that can also be 2.4-2.75m/ for 2.75m/s
Any value in s；When magnetic separation, the magnetic force of first stage permanent magnetic motor, can also be in 5000-6000 Gauss in addition to for 6000 Gausses
Any value, the magnetic force of second stage permanent magnetic motor is in addition to that can also be any in 8000-11000 Gauss for 10000 Gausses
Value, the magnetic force of phase III permanent magnetic motor can also be any value in 13000-14000 Gauss, equal energy in addition to being 14000 Gausses
Realize the effect in the present invention.
Finally, it is stated that preferred embodiment above is only used to illustrate the technical scheme of the present invention and not to limit it, although logical
It crosses above preferred embodiment the present invention is described in detail, however, those skilled in the art should understand that, can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (7)
1. a kind of method of separating feldspar from granite and quartz, which is characterized in that described method includes following steps:
(1) muck；
(2) ore grinding: will through step (1), treated that granite is put into sand pelletizer processed carries out ore grinding, it is small to obtain partial size
In the granite block for being equal to 8mm；
(3) sub-sieve: the granite block by partial size in step (2) less than or equal to 8mm is put into screen-dividing machine, obtains partial size respectively
It is big less than 2.36mm and partial size more than or equal to 0.83mm less than 0.83mm, partial size to be more than or equal to 0.38mm less than 0.38mm, partial size
It is less than tetra- kinds of granite blocks of 8mm in being equal to 2.36mm；
(4) photoelectricity color sorting: the partial size obtained in step (3) is more than or equal to 0.38mm and is more than or equal to less than 0.83mm, partial size
0.83mm is less than 2.36mm and partial size is more than or equal to 2.36mm and is respectively put into photoelectric colour sorter less than tri- kinds of granite blocks of 8mm
Middle progress photoelectricity color sorting finally obtains feldspar and quartz respectively；
(5) powder processed；The feldspar obtained in step (4) and quartz are pulverized respectively, obtain feldspar powder and silica flour；
(6) magnetic separation: the feldspar powder and silica flour that obtain in step (5) are respectively put into magnetic separator and carry out magnetic separation, the length is made
Fe in mountain flour and silica flour2O3Content, which is respectively less than, is equal to 0.03-0.1wt%.
2. the method according to claim 1, wherein the muck is specially by granite in step (1)
It is broken into the material block that partial size is less than or equal to 400mm.
3. the method according to claim 1, wherein the sand pelletizer processed is drum-type sand in step (2)
Pelletizer, the barrel diameter of the drum-type sand pelletizer are 2500mm, barrel lenght 4000mm, and main engine power is
75kW, revolving speed 25-30r/min.
4. according to the method described in claim 3, it is characterized in that, the cylinder inboard wall of the drum-type sand pelletizer posts just
Beautiful liner plate.
5. according to the method described in claim 4, it is characterized in that, the hardness of the corundum liner plate is greater than 9 grades.
6. the method according to claim 1, wherein in step (4), when the photoelectricity color sorting, used light
Electric color selector has and can be scanned the CCD camera lens of capture in 7000-10000 point, and frequency is reviewed one's lessons by oneself less than or equal to 1600Hz's
Compound solenoid valve；The resolution accuracy of the photoelectric colour sorter is heterochromatic less than 200 mesh, conveyor belt speed 2.4-2.75m/s, choosing
Color background is set as blue red when feldspar, and color background is set as red when choosing is quartzy.
7. first the method according to claim 1, wherein the magnetic separation divides three phases to complete in step (6)
Magnetic separation first is carried out in the permanent magnetic motor that magnetic force is 5000-6000 Gauss, then in the flat plate magnet that magnetic force is 8000-11000 Gauss
It selects and carries out magnetic separation under machine, finally carry out magnetic separation in the case where magnetic force is the pulsating high gradient magnetic separator with vertical ring of 13000-14000 Gauss.
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| CN112047350A (en) * | 2020-09-04 | 2020-12-08 | 江西九岭新能源有限公司 | Process for extracting high-purity silicon dioxide from granite pegmatite type petalite |
| CN113042180A (en) * | 2021-03-12 | 2021-06-29 | 中国地质科学院矿产综合利用研究所 | Method for recovering rare earth from heterolite |
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