CN113019654A - Method for treating and utilizing waste quartz stone solid waste in jewel processing - Google Patents
Method for treating and utilizing waste quartz stone solid waste in jewel processing Download PDFInfo
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- CN113019654A CN113019654A CN202110261346.7A CN202110261346A CN113019654A CN 113019654 A CN113019654 A CN 113019654A CN 202110261346 A CN202110261346 A CN 202110261346A CN 113019654 A CN113019654 A CN 113019654A
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 125
- 239000010453 quartz Substances 0.000 title claims abstract description 68
- 239000004575 stone Substances 0.000 title claims abstract description 60
- 238000012545 processing Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000010437 gem Substances 0.000 title claims abstract description 28
- 239000002910 solid waste Substances 0.000 title claims abstract description 23
- 239000002699 waste material Substances 0.000 title claims abstract description 17
- 229910001751 gemstone Inorganic materials 0.000 title claims description 26
- 239000004576 sand Substances 0.000 claims abstract description 48
- 238000005201 scrubbing Methods 0.000 claims abstract description 48
- 239000000463 material Substances 0.000 claims abstract description 47
- 239000012535 impurity Substances 0.000 claims abstract description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000000227 grinding Methods 0.000 claims abstract description 17
- 238000012216 screening Methods 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 229910052742 iron Inorganic materials 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 3
- 239000002245 particle Substances 0.000 claims description 26
- 235000013339 cereals Nutrition 0.000 claims description 12
- 235000011868 grain product Nutrition 0.000 claims description 10
- 238000007885 magnetic separation Methods 0.000 claims description 10
- 230000035945 sensitivity Effects 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 6
- 239000006148 magnetic separator Substances 0.000 claims description 6
- 206010039509 Scab Diseases 0.000 claims description 4
- 230000000737 periodic effect Effects 0.000 claims description 4
- 238000000746 purification Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000006004 Quartz sand Substances 0.000 abstract description 6
- 239000000843 powder Substances 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 12
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- 229910052681 coesite Inorganic materials 0.000 description 6
- 229910052593 corundum Inorganic materials 0.000 description 6
- 229910052906 cristobalite Inorganic materials 0.000 description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 6
- 239000000377 silicon dioxide Substances 0.000 description 6
- 239000002689 soil Substances 0.000 description 6
- 229910052682 stishovite Inorganic materials 0.000 description 6
- 229910052905 tridymite Inorganic materials 0.000 description 6
- 229910001845 yogo sapphire Inorganic materials 0.000 description 6
- 239000002002 slurry Substances 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 230000003902 lesion Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011044 quartzite Substances 0.000 description 2
- 238000005029 sieve analysis Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/20—Disintegrating members
-
- 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
- B03C1/025—High gradient magnetic separators
- B03C1/031—Component parts; Auxiliary operations
- B03C1/033—Component parts; Auxiliary operations characterised by the magnetic circuit
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/14—Wipes; Absorbent members, e.g. swabs or sponges
- B08B1/143—Wipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
- B08B1/32—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention belongs to the technical field of waste treatment and recycling, and particularly discloses a method for treating and recycling waste quartz stone solid waste in gem processing. According to the method provided by the invention, quartz leftover materials are directly scrubbed to obtain scrubbed leftover materials; crushing the scrubbing leftover materials to the granularity of-4.75 mm, and then carrying out secondary scrubbing and impurity removal to obtain secondary scrubbing leftover materials; secondarily scrubbing the leftover materials and screening to obtain coarse sand and fine sand; and drying and screening coarse sand, and performing photoelectric color selection on each grade of classified products respectively to obtain pure-color quartz stone sand products with different grain grades, wherein the pure-color quartz stone sand products are used as sand raw materials for the artificial quartz stone plate, and non-magnetic products obtained by fine sand grinding and strong magnetic iron removal are used as powdery raw materials for the artificial quartz stone plate. The method takes the quartz stone solid waste generated in the gem processing industry as the raw material, and prepares the quartz stone solid waste into the quartz sand and the quartz powder for the synthetic quartz stone slab, thereby changing waste into valuable, and also has the advantages of simple preparation steps and low cost.
Description
Technical Field
The invention relates to the technical field of waste treatment and recycling, in particular to a method for treating and utilizing waste quartz stone solid waste in gem processing.
Background
China is a large country for jewelry production and consumption, and currently, more than 30 different types of gem processing bases with world influence exist nationwide. For example, the Guangdong Polo quadrangle is a large domestic color gem processing trade gathering place, and more than 3000 small workshop type processing factories exist in the peak period. The raw materials processed and processed in the Guangdong Polo quadrangle building gem processing trade collecting and distributing place are all gem stones with pure texture and colorful colors. Gemstone stones come from all over the world, including many precious and rare gemstone sources.
A large amount of leftover materials are generated in the process of processing gemstones, and are not reasonably utilized at present. Taking quartz stone processing as an example, a large amount of quartz sand leftover solid waste is generated in the stone cutting, cutting and shaping processes. Quartz stone leftover materials produced in the processing process are mixed with other tailings, are disorderly poured everywhere, are not subjected to environmental protection treatment, are not reasonably utilized, cause resource waste, and seriously pollute the environment.
In order to effectively solve the problem of environmental pollution caused by the gem processing industry, a method for classifying and treating gem processing leftover materials is needed to be developed, so that solid wastes generated by gem processing can be recycled and reused with high value.
Disclosure of Invention
The invention mainly solves the technical problem of providing a method for treating and utilizing the solid waste of the waste quartz stone in gem processing, which can obtain various utilizable products by simple treatment, such as quartz sand and quartz powder for artificial quartz stone slabs, and changes waste into valuable.
In order to solve the technical problems, the invention adopts the technical scheme that: a method for treating and utilizing solid waste of waste quartz stone in gem processing comprises the following steps:
(1) directly scrubbing quartz stone leftover materials generated by processing gemstones, namely directly scrubbing the quartz stone leftover materials under the condition of original granularity to remove impurities to obtain scrubbed leftover materials; the scrubbing operation can be carried out by adopting a cylindrical scrubbing machine, soil or dirt on the surface of the leftover materials is scrubbed and removed, the leftover materials after scrubbing are screened out by a cylindrical screen to obtain oversize leftover materials and impurities, the impurities enter a mud material treatment system for treatment, and the oversize leftover materials are the scrubbed leftover materials;
(2) crushing the scrubbing leftover materials to a granularity of-4.75 mm, and then carrying out secondary scrubbing and impurity removal to obtain secondary scrubbing leftover materials; the secondary scrubbing treatment can be carried out by adopting a cylindrical scrubbing machine, and then fine-grained slurry with the thickness of-1 mm is screened out by a cylindrical screen to obtain secondary scrubbing leftover materials; the scrubbing leftover materials are crushed by a closed circuit, and preferably a closed circuit crushing device combining a double-roller crusher and a vibrating screen is adopted;
crushing to a granularity of-4.75 mm, and then scrubbing for the second time, wherein the specific surface area is increased after the granularity is thinned, so that the residual soil and dirt at the sunken position of the solid waste surface of the quartz stone after the first-stage scrubbing can be further removed; the crushing granularity of-4.75 mm is selected to be more suitable for the requirement of the granularity of the sand for the artificial quartz stone plate;
(3) screening the secondary scrubbing leftover materials to obtain coarse sand with the particle size of-4.75 mm and 0.71mm and fine sand with the particle size of-0.71 mm;
(4) drying the coarse-grained sand, screening and grading, and performing photoelectric color selection on each grade of graded products to obtain pure-color quartz stone sand grain products with different grain grades, wherein the pure-color quartz stone sand grain products with different grain grades are used as sand grain raw materials for the artificial quartz stone plate;
and grinding the fine sand to a granularity of-0.074 mm, and then performing iron removal and purification through strong magnetic separation to obtain a nonmagnetic product serving as a powdery raw material for the artificial quartz stone plate.
Preferably, in step (4), the screening and classification respectively obtain products with two size fractions of-4.75 +2.00mm and-2.00 +0.71 mm.
Preferably, in the step (4), the fine sand grinding is a closed circuit grinding system formed by connecting a ball mill and a cyclone; the ball mill adopts a ball mill with a ceramic lining, and preferably, the grinding medium of the ball mill is ceramic balls.
Preferably, in the step (4), impurities obtained by photoelectric color separation are used as a machine-made sand product.
Preferably, in the step (4), the magnetic impurities obtained by removing iron through strong magnetic separation are used as ceramsite products.
Preferably, the photoelectric color selection is performed by using a photoelectric color selector; further preferably, the photoelectric color selection conditions of the product with the particle size fraction of-4.75 +2.00mm are as follows: the background color is blue, the sensitivity is 30-60%, the number of lines is 3-5, the number of scabs is 1-8, and the mottled particles are removed in a heterochromous particle reverse selection mode;
photoelectric color selection conditions of a product with a particle size fraction of-2.00 +0.71mm are as follows: the background color is green, the sensitivity is 30-60%, the number of lines is 3-5, the number of scabs is 1-8, and the mottled particles are removed in a heterochromous particle reverse selection mode.
Preferably, the strong magnetic separator for removing iron by strong magnetic separation is a periodic high-gradient strong magnetic separator, the preferred magnetic separation strength is 0.8T-1.0T, and a steel mesh magnetic medium is preferably adopted.
The invention provides a method for treating and utilizing waste quartz stone solid waste in gem processing, which is characterized in that the quartz stone solid waste generated in the gem processing process, namely quartz stone leftover materials, is directly scrubbed by strong force, and the surface soil and dirt are removed by utilizing the collision among ores; then crushing and scrubbing again, further removing residual soil and dirt at the sunken part of the solid waste surface of the quartz stone after a section of scrubbing, and improving the purity of the raw material;
the crushing operation is set after the solid waste surface of the quartz stone is scrubbed and wetted, and the quartz stone does not need to be crushed before the first scrubbing, so that the generation of dust in the crushing process can be reduced, and the dust pollution is reduced;
the quartz stone solid waste is only treated by scrubbing, screening and color sorting processes, so that the original gem characteristics of a fragmentation interface can be kept, and the attractiveness of surface granules can be improved and the value of a quartz plate can be improved when the quartz stone solid waste is used for producing an artificial quartz stone plate;
the coarse sand is graded into products with two granularity ranges, then photoelectric color selection is carried out, and the products with narrow granularity ranges are adopted for optical head color selection, so that the photoelectric color selection effect can be improved, and the quality of the obtained pure quartz sand grain product is ensured.
The method for treating and utilizing the waste quartz stone solid waste in gem processing provided by the invention takes the quartz stone solid waste generated in gem processing industry as a raw material, and prepares the quartz stone solid waste which cannot be utilized at present into various products such as quartz sand, quartz powder and the like for the artificial quartz stone slab, thereby changing waste into valuable; compared with the existing production method of quartz sand and quartz powder for quartz stone slabs, the method provided by the invention has the advantages of simple preparation steps, low cost and high product cost performance.
The invention utilizes source classification treatment and mineral processing treatment technology, so that the solid waste of the quartz stone in gem processing is recycled and utilized with high value, the waste is changed into valuable, the process is simple, the invention has great significance for sustainable development of gem processing industry, and the popularization and the application are convenient.
Drawings
FIG. 1 is a process flow chart of a method for treating and utilizing waste quartz stone in gem processing provided by the invention.
Detailed Description
The technical solution of the present invention will be described in detail by specific examples.
The percentages in the following examples are given by mass.
Example 1
The object of this embodiment is that the quartz is useless admittedly, the leftover bits that produce in the quartz course of working, and the particle size range of former granularity is 10 ~ 205mm, and its multielement analysis is seen in table 1, and the particle size sieve analysis result is seen in table 2.
TABLE 1
| Element(s) | Al2O3 | SiO2 | Fe2O3 | CaO | MgO | K2O | Na2O | TiO2 |
| Content (%) | 0.45 | 99.34 | 0.11 | 0.05 | 0.02 | 0.036 | 0.048 | 0.01 |
TABLE 2
| Size fraction (mm) | Yield (%) |
| +12 | 57.89 |
| -12+8 | 34.78 |
| -8+4 | 4.24 |
| -4+2 | 1.74 |
| -2 | 1.35 |
| Total up to | 100.00 |
The process flow shown in fig. 1 is adopted to treat the quartz stone leftover materials, and the treatment steps are as follows:
(1) scrubbing quartz stone leftover materials under the original granularity condition by a cylindrical scrubbing machine directly, removing surface soil or dirt by means of collision among the leftover material particles, screening-1 mm fine-grain slurry by a cylindrical screen after scrubbing to obtain oversize leftover materials 1 and impurities 1, enabling the impurities 1 to enter a slurry treatment system, and enabling the oversize leftover materials 1 to be the scrubbing leftover materials;
(2) feeding the oversize leftover materials 1 into a crusher for crushing, screening by a vibrating screen after crushing, returning oversize products to the crusher for crushing to form closed crushing, and crushing to-4.75 mm size fraction; then, a strong stirring scrubbing machine is adopted for secondary scrubbing and impurity removal, a cylindrical scrubbing machine can be adopted for secondary scrubbing, and then fine-grained mud with the thickness of-1 mm is screened out by a cylindrical screen, so that secondary scrubbing leftover materials are obtained;
(3) screening the secondary scrubbing leftover materials to obtain coarse sand with the particle size of-4.75 and 0.71mm and fine sand with the particle size of-0.71 mm;
(4) after coarse sand with the grain size of-4.75 mm to 0.71mm is dried, the coarse sand is classified into two grain sizes of-4.75 to +2.00mm and-2.00 to +0.71mm through screening; the two size fractions respectively enter a photoelectric color selector to adopt a heterochromous particle reverse sorting mode to sort, and the photoelectric color sorting parameters of the size fraction of-4.75 to +2.00mm are as follows: blue background color, sensitivity of 40%, line number of 5, lesion size of 6, -2.00- +0.71mm size fraction photoelectric color selection parameters: green background color, sensitivity of 60%, line number of 4 and lesion size of 4; obtaining a pure-color quartz stone sand grain product and impurities 2 in two size fraction intervals of-4.75- +2.00mm and-2.00- +0.71mm through color sorting; the pure-color quartz stone sand grain product is used as a sand grain raw material for the artificial quartz stone plate, and the impurity 2 product can be used as a machine-made sand product;
fine sand with the diameter of-0.71 mm enters a cyclone for classification, classified settled sand enters a ceramic ball mill for ore grinding, and a product after ore grinding returns to the cyclone for classification to form closed circuit ore grinding, and the ore grinding is carried out to the diameter of-0.074 mm; and (3) carrying out strong magnetic separation and iron removal purification on the ground ore pulp by a periodic high-gradient strong magnetic separator, wherein the magnetic field intensity is 0.8T, so as to obtain magnetic impurities as a product for ceramsite, and the obtained nonmagnetic product as a powdery raw material for artificial quartz stone slabs.
The multi-element analysis of the pure-colored quartzite sand grain product and the non-magnetic product are shown in tables 3 and 4, respectively.
TABLE 3
| Element(s) | Al2O3 | SiO2 | Fe2O3 | CaO | MgO | K2O | Na2O | TiO2 |
| Content (%) | 0.27 | 99.40 | 0.034 | 0.05 | 0.02 | 0.032 | 0.043 | <0.01 |
TABLE 4
| Element(s) | Al2O3 | SiO2 | Fe2O3 | CaO | MgO | K2O | Na2O | TiO2 |
| Content (%) | 0.12 | 99.43 | 0.062 | 0.01 | 0.01 | 0.009 | 0.01 | <0.01 |
Example 2
The object of this embodiment processing is quartz solid waste, namely, the leftover material that produces in the quartz processing, and the range of primary particle size granule size is 1 ~ 145mm, and its multielement analysis is seen in table 5, and the particle size sieve analysis result is seen in table 6.
TABLE 5
| Element(s) | Al2O3 | SiO2 | Fe2O3 | CaO | MgO | K2O | Na2O | TiO2 |
| Content (%) | 0.53 | 98.88 | 0.25 | 0.029 | 0.013 | 0.058 | 0.034 | <0.01 |
TABLE 6
| Size fraction (mm) | Yield (%) |
| +12 | 36.71 |
| -12+8 | 41.53 |
| -8+4 | 12.79 |
| -4+2 | 5.03 |
| -2 | 3.94 |
| Total up to | 100.00 |
The process flow shown in fig. 1 is adopted to treat the quartz stone leftover materials, and the treatment steps are as follows:
(1) scrubbing quartz stone leftover materials under the original granularity condition by a cylindrical scrubbing machine directly, removing surface soil or dirt by means of collision among the leftover material particles, screening-1 mm fine-grain slurry by a cylindrical screen after scrubbing to obtain oversize leftover materials 1 and impurities 1, enabling the impurities 1 to enter a slurry treatment system, and enabling the oversize leftover materials 1 to be the scrubbing leftover materials;
(2) feeding the oversize leftover materials 1 into a crusher for crushing, screening by a vibrating screen after crushing, returning oversize products to the crusher for crushing to form closed crushing, and crushing to-4.75 mm size fraction; then, a strong stirring scrubbing machine is adopted for secondary scrubbing and impurity removal, a cylindrical scrubbing machine can be adopted for secondary scrubbing, and then fine-grained mud with the thickness of-1 mm is screened out by a cylindrical screen, so that secondary scrubbing leftover materials are obtained;
(3) screening the secondary scrubbing leftover materials to obtain coarse sand with the particle size of-4.75 and 0.71mm and fine sand with the particle size of-0.71 mm;
(4) after coarse sand with the grain size of-4.75 mm to 0.71mm is dried, the coarse sand is classified into two grain sizes of-4.75 to +2.00mm and-2.00 to +0.71mm through screening; the two size fractions respectively enter a photoelectric color selector to adopt a heterochromous particle reverse sorting mode to sort, and the photoelectric color sorting parameters of the size fraction of-4.75 to +2.00mm are as follows: blue background color, sensitivity of 45%, line number of 4, disease spot of 1, -2.00- +0.71mm size fraction photoelectric color selection parameter: green background color, sensitivity of 50%, line number of 3 and lesion size of 2; obtaining a pure-color quartz stone sand grain product and impurities 2 in two size fraction intervals of-4.75- +2.00mm and-2.00- +0.71mm through color sorting; the pure-color quartz stone sand grain product is used as a sand grain raw material for the artificial quartz stone plate, and the impurity 2 product can be used as a machine-made sand product;
fine sand with the diameter of-0.71 mm enters a cyclone for classification, classified settled sand enters a ceramic ball mill for ore grinding, and a product after ore grinding returns to the cyclone for classification to form closed circuit ore grinding, and the ore grinding is carried out to the diameter of-0.074 mm; and (3) carrying out strong magnetic separation and iron removal purification on the ground ore pulp by a periodic high-gradient strong magnetic separator, wherein the magnetic field intensity is 1.0T, so as to obtain magnetic impurities as a product for ceramsite, and the obtained nonmagnetic product as a powdery raw material for artificial quartz stone slabs.
The multi-element analysis of the pure-colored quartzite grit product and the non-magnetic product are shown in tables 7 and 8.
TABLE 7
| Element(s) | Al2O3 | SiO2 | Fe2O3 | CaO | MgO | K2O | Na2O | TiO2 |
| Content (%) | 0.45 | 99.05 | 0.071 | 0.06 | 0.02 | 0.07 | 0.043 | 0.01 |
TABLE 8
| Element(s) | Al2O3 | SiO2 | Fe2O3 | CaO | MgO | K2O | Na2O | TiO2 |
| Content (%) | 0.21 | 99.25 | 0.10 | 0.019 | 0.01 | 0.01 | 0.01 | 0.03 |
Although the invention has been described in detail hereinabove by way of general description, specific embodiments and experiments, it will be apparent to those skilled in the art that many modifications and improvements can be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (7)
1. A method for treating and utilizing solid wastes of waste quartz stone in gem processing is characterized by comprising the following steps:
(1) directly scrubbing quartz stone leftover materials generated by processing gemstones, and removing impurities to obtain scrubbed leftover materials;
(2) crushing the scrubbing leftover materials to a granularity of-4.75 mm, and then carrying out secondary scrubbing and impurity removal to obtain secondary scrubbing leftover materials;
(3) screening the secondary scrubbing leftover materials to obtain coarse sand with the particle size of-4.75 mm and 0.71mm and fine sand with the particle size of-0.71 mm;
(4) drying the coarse-grained sand, screening and grading, and performing photoelectric color selection on each grade of graded products to obtain pure-color quartz stone sand grain products with different grain grades, wherein the pure-color quartz stone sand grain products with different grain grades are used as sand grain raw materials for the artificial quartz stone plate;
and grinding the fine sand to a granularity of-0.074 mm, and then performing iron removal and purification through strong magnetic separation to obtain a nonmagnetic product serving as a powdery raw material for the artificial quartz stone plate.
2. The method according to claim 1, wherein in step (4), the screening and classification respectively obtain products with two size fractions of-4.75 +2.00mm and-2.00 +0.71 mm.
3. The method according to claim 1 or 2, wherein in the step (4), the fine sand grinding is a closed circuit grinding system formed by connecting a ball mill and a cyclone; the ball mill adopts a ball mill with a ceramic lining, and preferably, the grinding medium of the ball mill is ceramic balls.
4. The method of claim 1, wherein in step (4), the impurities obtained by photoelectric color separation are used as a machine-made sand product.
5. The method as claimed in claim 4, wherein in the step (4), the magnetic impurities obtained by removing iron through strong magnetic separation are used as ceramsite products.
6. The method according to claim 2, wherein the photoelectric color sorting is performed by using a photoelectric color sorter, preferably, the photoelectric color sorting conditions of the product with the size fraction of-4.75 +2.00mm are as follows: the background color is blue, the sensitivity is 30-60%, the number of lines is 3-5, the number of scabs is 1-8, and the mottled particles are removed in a heterochromous particle reverse selection mode; and/or the photoelectric color selection conditions of the product with the particle size fraction of-2.00 +0.71mm are as follows: the background color is green, the sensitivity is 30-60%, the number of lines is 3-5, the number of scabs is 1-8, and the mottled particles are removed in a heterochromous particle reverse selection mode.
7. The method according to any one of claims 1 to 6, wherein the strong magnetic separator for removing iron by strong magnetic separation is a periodic high-gradient strong magnetic separator, preferably the magnetic separation strength is 0.8T-1.0T, and preferably a steel mesh magnetic medium is adopted.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110261346.7A CN113019654B (en) | 2021-03-10 | 2021-03-10 | Treatment and utilization method for solid wastes of waste quartz stone in precious stone processing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110261346.7A CN113019654B (en) | 2021-03-10 | 2021-03-10 | Treatment and utilization method for solid wastes of waste quartz stone in precious stone processing |
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| CN113019654A true CN113019654A (en) | 2021-06-25 |
| CN113019654B CN113019654B (en) | 2023-08-29 |
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| CN115626802A (en) * | 2022-11-04 | 2023-01-20 | 惠州市金钰堂文化推广有限公司 | Mineralizer for regenerated gem, method for regenerating gem and regenerated gem |
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