CN115739354B - Flat dry sand production line and production process thereof - Google Patents
Flat dry sand production line and production process thereofInfo
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- CN115739354B CN115739354B CN202211410383.0A CN202211410383A CN115739354B CN 115739354 B CN115739354 B CN 115739354B CN 202211410383 A CN202211410383 A CN 202211410383A CN 115739354 B CN115739354 B CN 115739354B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention relates to a tiled dry sand and stone production line and a production process thereof, wherein the production line comprises a bar screening feeder, a jaw crusher, a single-cylinder hydraulic cone crusher, a multi-cylinder hydraulic cone crusher, a first vibrating screen, a vertical impact crusher, a second vibrating screen and a third vibrating screen which are arranged on a sand and stone conveying path; the production process comprises the steps of screening by a bar screening feeder, jaw crushing, secondary cone crushing and vertical crushing matched with multi-stage screening. The production line solves the problems that sand quality accords with the specification and stability, particle size distribution accords with a grading curve and processing cost optimization from the angles of machine-made sand grading, stone powder content and particle type circle, and broken stone surface is not wrapped with powder and particle type circle through equipment and auxiliary link principles.
Description
Technical Field
The invention relates to the technical field of machine-made sand processing, in particular to a tiled dry sand production line and a production process thereof.
Background
The sand and stone production of large building construction enterprises is highly dependent on construction projects, and is influenced by the construction requirements of the projects from the supply, production and processing of lump stones to the specification, grading, quality requirements and the like of products, and the large-scale building construction enterprises generally adopt self-production and self-use modes, so that great differences exist between building material mine processing. In the existing project construction process, the machine-made sand production processing source often needs multi-point feeding, the rock performance of the machine-made sand production processing source is changed by construction points, the change of the rock performance is large, the production and processing control difficulty is also large, the machine-made sand processing is only one link of the whole concrete production process, and the processing purpose is more concerned with the optimization of the comprehensive performance of the whole concrete on the basis of controlling the processing cost.
The method comprises the steps of crushing raw materials to a jaw crusher through a bin and a feeding machine to a transition bin, crushing the raw materials to a standard cone crusher to a vibrating screen for screening, fine crushing the raw materials to a standard cone crusher for screening more than 33mm, shaping and crushing all particles smaller than 33mm by a sand making machine, and then screening sand and broken stone to obtain the finished products, wherein corresponding tiling dry production equipment and accessories are combined into a rod feeder, jaw crusher, waste soil screen, cone, vibrating screen, sand making machine, dust collector and blanking point water dust fall. The process of three-break one-shaping in the production line is complete, but broken stone and machine-made sand are produced, the broken stone surface is wrapped with a layer of stone powder, the machine-made sand has more middle parts and less parts, the content of the machine-made sand powder is difficult to control and stabilize and exceeds the specification, the machine-made sand is difficult to apply to the upper structure of engineering, the broken stone is further used for the construction of upper high-grade concrete after being washed by water for the second time, and the produced broken stone is in different grades from the requirements, and a large amount of broken stone with partial specifications is accumulated in a broken stone field, so that the production cost is increased.
Therefore, from the angles of machine-made sand grading, stone powder content and particle type circles, the surface of crushed stone is not wrapped with powder and particle type circles, the traditional dry process production line is improved, an optimization principle of tiled dry sand production is formed by innovatively introducing auxiliary equipment, enlarging equipment, making closed loops, selecting materials and the like, adverse factors of the tiled dry process production line affecting machine-made sand and crushed stone quality are researched, and a set of green processing and product high-quality critical control technology based on the tiled dry sand self-processing production line is formed.
Disclosure of Invention
Aiming at the defects of the prior art, the first aim of the invention is to provide a tiled dry sand production line which has the advantages of stable and controllable sand quality and reduced processing cost.
The second object of the invention is to provide a tiled dry sand production process, which has the advantages of adapting to machine-made sand grading and ensuring that broken stone is not wrapped with powder.
In order to achieve the first object, the present invention provides the following technical solutions:
a tiled dry sand and stone production line comprises a rod screening feeder, a jaw crusher, a single-cylinder hydraulic cone crusher, a multi-cylinder hydraulic cone crusher, a first vibrating screen, a vertical impact crusher, a second vibrating screen and a third vibrating screen which are arranged on a sand and stone conveying path, wherein two discharge ends of the rod screening feeder are in transitional connection with the feed ends of the jaw crusher, the discharge ends of the jaw crusher are in transitional connection with the feed ends of the single-cylinder hydraulic cone crusher, the discharge ends of the single-cylinder hydraulic cone crusher and the multi-cylinder hydraulic cone crusher are in transitional connection with the feed ends of the first vibrating screen, the discharge ends of the first vibrating screen are provided with a plurality of discharge ends, at least two discharge ends of the first vibrating screen are in transitional connection with the feed ends of the multi-cylinder hydraulic cone crusher and the vertical impact crusher respectively, the discharge ends of the vertical impact crusher are in transitional connection with the feed ends of the second vibrating screen, the discharge ends of the second vibrating screen are provided with a plurality of discharge ends, one of the discharge ends of the second vibrating screen are in transitional connection with the feed ends of the third vibrating screen, and one of the vertical impact crusher is in transitional connection with the discharge ends of the vertical impact crusher.
Further, still include the dregs sieve, dregs storehouse and the transfer storehouse of arranging on grit conveying path, another discharge end of stick screening batcher with the feed end transitional coupling of dregs sieve, the discharge end of dregs sieve be provided with two, and respectively with the feed end transitional coupling of dregs storehouse and well transfer storehouse, the discharge end of jaw breaker pass through the transfer storehouse with the feed end transitional coupling of single cylinder hydraulic cone crusher.
Further, the multi-cylinder hydraulic cone crusher is provided with at least two parallel arranged.
Further, at least two of the first vibrating screen, the second vibrating screen and the third vibrating screen are arranged in parallel.
Further, still include the first feed bin that is used for holding 0~5mm grit, one of them discharge end of first shale shaker with first feed bin transitional coupling.
Further, the sand-stone vibrating screen further comprises a second storage bin for containing 20-30 mm sand and a third storage bin for containing 0-4 mm sand, wherein two discharge ends of the second vibrating screen are respectively in transitional connection with the second storage bin and the third storage bin.
Further, a humidifying stirrer is arranged on a conveying path between the second vibrating screen and the third bin.
Further, the sand-stone vibrating screen further comprises a fourth bin for containing sand-stone with the size of 5-10 mm and a fifth bin for containing sand-stone with the size of 10-20 mm, wherein two discharge ends of the third vibrating screen are respectively in transitional connection with the fourth bin and the fifth bin.
Further, the multi-cylinder hydraulic cone crusher further comprises a plurality of bag type dust collectors, wherein the inlet ends of the bag type dust collectors are respectively arranged close to the feeding ends of the jaw crusher, the single-cylinder hydraulic cone crusher, the multi-cylinder hydraulic cone crusher, the first vibrating screen, the vertical impact crusher, the second vibrating screen and the third vibrating screen.
In order to achieve the first object, the present invention provides the following technical solutions:
A production process of tiled dry sand stone comprises the following steps,
S1, sand and stones below 100mm are screened by the bar screening feeder and conveyed to a muck screen, sand and stones above 100mm are conveyed to the jaw crusher, soil waste and sand and stones above 20mm are screened by the muck screen and conveyed to a muck bin and a transfer warehouse respectively, and sand and stones are crushed to 100-200 mm by the jaw crusher and conveyed to the transfer warehouse;
s2, lifting the sand and stones obtained in the step S1 to the single-cylinder hydraulic cone crusher for crushing, and conveying the sand and stones crushed by the single-cylinder hydraulic cone crusher and the multi-cylinder hydraulic cone crusher to the first vibrating screen for screening;
s3, after the first vibrating screen screens sand, 0-5 mm of sand is conveyed into the first bin, 5-13 mm of sand and 13-33 mm of sand are conveyed into the vertical impact crusher, and sand with the diameter of more than 33mm is conveyed into the multi-cylinder hydraulic cone crusher;
S4, crushing sand by the vertical impact crusher, and conveying the sand to the second vibrating screen;
S5, after sand and stones are screened by the second vibrating screen, 20-30 mm sand and stones are conveyed into the second storage bin, 5-20 mm sand and stones are conveyed to the third vibrating screen, and the rest sand and stones are conveyed to the third storage bin after passing through a humidifying stirrer;
S6, after sand and stones are screened by the third vibrating screen, 5-10 mm sand and stones are conveyed into the fourth storage bin, 10-20 mm sand and stones are conveyed into the fifth storage bin, and the rest sand and stones are conveyed into the vertical impact crusher.
In summary, the beneficial technical effects of the invention are as follows:
1. The production line of the invention solves the problems that the sand quality accords with the specification and is stable, the particle size distribution accords with the grading curve and the processing cost optimization is realized by adopting the jaw crushing, the secondary cone crushing and the vertical crushing in combination with the multi-stage screening from the angles of machine-made sand grading, stone powder content and particle type circle, and the surface of the crushed stone is not wrapped with powder and particle type circle through the principles of equipment and auxiliary links;
2. According to the process, adverse factors of a tiled dry method production line affecting quality of machine-made sand and broken stone are researched, process links and equipment are improved, quality screening of master batches is improved, grading problems of large at two ends and small in the middle of the machine-made sand are solved, a control means for particle content of less than 0.6mm and particle content of more than 1.18mm of the machine-made sand is provided, broken stone is not wrapped with powder, the problem that 5-10 mm specification is rich and abundant, the upper limit of the content of sand powder is 10-15% when a methylene blue index value is within 1 is solved, a series of fine control systems are provided, and a set of green processing and product high-quality key control technology based on the tiled dry method sand self-processing production line is formed.
Drawings
FIG. 1 is a schematic diagram of a tiled dry sand production line of the present invention.
Fig. 2 is a schematic illustration of the connection between the bar screen feeder and jaw crusher of the present invention.
Fig. 3 is a schematic diagram of the connection between the bar screen feeder, jaw crusher, residue screen and transfer warehouse of the present invention.
Fig. 4 is a schematic diagram of the connection between a single-cylinder hydraulic cone crusher and a multi-cylinder hydraulic cone crusher according to the invention.
Fig. 5 is a schematic diagram of the connection between the multi-cylinder hydraulic cone crusher and the first vibrating screen of the present invention.
Fig. 6 is a schematic structural view of the vertical impact crusher of the present invention.
Fig. 7 is a schematic view of the connection between the vertical impact crusher and the second vibrating screen according to the present invention.
Fig. 8 is a schematic diagram of the connection between a second and third shaker of the present invention.
In the figure, a jaw crushing and screening unit, a bar screening feeder, a jaw crusher, a slag screen, a 14, a middle rotary warehouse, a hydraulic crushing and screening unit, a 21, a single-cylinder hydraulic cone crusher, a 22, a multi-cylinder hydraulic cone crusher, a 23, a first vibrating screen, a 3, an impact crushing and screening unit, a 31, a vertical impact crusher, a 32, a second vibrating screen, a 33, a third vibrating screen, a 4, a slag pile, a 5, a first bin, a 6, a second bin, a 7, a third bin, a 8, a fourth bin, a 9, a fifth bin, a 10 and a bag type dust remover are respectively arranged.
Detailed Description
The invention will be further described with reference to the drawings and detailed description in order to make the technical means, the creation characteristics, the achievement of the objects and the functions of the invention more clear and easy to understand.
Referring to fig. 1, the invention discloses a tiled dry sand production line, which comprises a jaw crushing and screening unit 1, a hydraulic crushing and screening unit 2 and an impact crushing and screening unit 3 which are sequentially connected along a sand conveying direction, and further comprises a residue pile 4, a first storage bin 5 for containing 0-5 mm sand, a second storage bin 6 for containing 20-30 mm sand, a third storage bin 7 for containing 0-4 mm sand, a fourth storage bin 8 for containing 5-10 mm sand and a fifth storage bin 9 for containing 10-20 mm sand. Wherein, the discharge end of jaw broken screening unit 1 respectively with dregs heap 4 and hydraulic pressure broken screening unit 2 feed end transitional coupling, hydraulic pressure broken screening unit 2's discharge end respectively with first feed bin 5 and impact broken screening unit 3's feed end transitional coupling, impact broken screening unit 3's discharge end respectively with third feed bin 7, fourth feed bin 8 and fifth feed bin 9 transitional coupling.
Referring to fig. 2 to 3, the jaw crushing and screening unit 1 includes a bar screening feeder 11, a jaw crusher 12, a clinker screen 13, and a transfer warehouse 14. The discharge end of the bar screening feeder 11 is provided with two and is in transitional connection with the feed ends of the jaw crusher 12 and the muck screen 13 respectively, the discharge end of the muck screen 13 is provided with two and is in transitional connection with the feed ends of the muck bin and the intermediate rotary warehouse 14 respectively, and the discharge end of the jaw crusher 12 is in transitional connection with the feed end of the hydraulic crushing and screening unit 2 through the intermediate rotary warehouse.
The processing machine sand and broken stone of the tiled dry production line ensures that the water content of the stone master batch and the processed coarse broken raw materials is small, pure stone does not contain soil impurities, a double-layer staggered table screen bar with the aperture of 2m of 100mm is adopted before the stone master batch enters into a jaw broken (fine particles continuously sink to the bottom in the process of vibration feeding movement, coarse particles sink to the surface, fine particles at the top of a thick layer are overturned below through staggered tables and repeatedly pass through the working principle that the fine particles continuously sink to the bottom in the process of vibration feeding movement, and coarse particles sink to the surface), the impurity-containing soil is screened out, the particles smaller than 25mm are screened out by conveying the waste soil screen, and the water content of the part is much more soil.
Referring to fig. 4 to 5, the hydraulic crushing and screening unit 2 includes a single cylinder hydraulic cone crusher 21, a pair of parallel arranged multi-cylinder hydraulic cone crushers 22, and a pair of parallel arranged first shakers 23. The discharge end of the transfer bin is in transitional connection with the feed end of the single-cylinder hydraulic cone crusher 21, the discharge ends of the single-cylinder hydraulic cone crusher 21 and the multi-cylinder hydraulic cone crusher 22 are in transitional connection with the feed end of the first vibrating screen 23, and the discharge end of the first vibrating screen 23 is provided with a plurality of discharge ends which are in transitional connection with the feed ends of the first bin 5, the multi-cylinder hydraulic cone crusher 22 and the impact crushing and screening unit 3 respectively.
The coarse broken stone has certain water content and wrapped soil, and the grains below 5mm are sieved to ensure the quality of the subsequent raw materials, the vibrating sieve is set as a first vibrating sieve, the cone is continuously broken at the rotating speed of 500r/min, and the working principle that the muddy water adhered to the surface of the stone block is separated and vibrated and the grains below 5mm are wrapped together is combined is applied.
Referring to fig. 6 to 8, the impact crushing and screening unit 3 includes a vertical impact crusher 31, a pair of second shakers 32 arranged in parallel, and a pair of third shakers 33 arranged in parallel, a feed end of the vertical impact crusher 31 is in transitional connection with a discharge end of the first shakers 23, a discharge end is in transitional connection with a feed end of the second shakers 32, a plurality of discharge ends of the second shakers 32 are provided and are in transitional connection with feed ends of the third silos 7 and 33, respectively, and a humidifying agitator is provided on a conveying path between the second shakers 32 and the third silos 7, and a plurality of discharge ends of the third shakers 33 are provided and are in transitional connection with feed ends of the fourth silos 8, the fifth silo 9, and the vertical impact crusher 31, respectively.
5~35Mm raw materials that draw through the cone fracture go out through vertical impact and screen out about 0~4mm (semi-manufactured goods machine-made sand), 6~12mm, 12~23mm, 23~30mm granule, form through adjusting the import muzzle and make stone or partly stone and make the work principle of stone and solve the circular problem of granule, 4~6mm granule of this part falls into the conveyer belt through the sieve unloading splitter box, get into vertical impact and break and carry out the return circuit principle of broken again, form the granule that is less than about 0.3mm, compensate the big middle problem of two big middle sizes that traditional tiling formula dry process produced, solve machine-made sand grading curve problem. In addition, the humidifying agitator breaks up the falling semi-finished product machine-made sand by utilizing the principle of motor rotation, the lifted machine-made sand powder is sucked away by wind and continuously falls into the rotary agitator to be uniformly mixed, and finally the machine-made sand enters a finished product bin to meet the standard of stone powder content.
Referring to fig. 1, the above-mentioned production line further includes a plurality of bag house dust collectors 10, and inlet ends of the bag house dust collectors 10 are disposed near the feed ends of the jaw crusher 12, the single cylinder hydraulic cone crusher 21, the multi cylinder hydraulic cone crusher 22, the first vibrating screen 23, the vertical impact crusher 31, the second vibrating screen 32, and the third vibrating screen 33, respectively.
Correspondingly, the invention also discloses a production process of the tiled dry sand stone, which comprises the following steps of,
S1, a bar screening feeder 11 screens sand and stones below 100mm and conveys the sand and stones below 100mm to a muck screen 13, sand and stones above 100mm are conveyed to a jaw crusher 12, the muck screen 13 screens earth waste and stones above 20mm and conveys the sand and stones to a muck bin and a transfer warehouse 14 respectively, and the jaw crusher 12 crushes the sand and stones to 100-200 mm and conveys the sand and stones to the transfer warehouse 14;
s2, lifting the sand and stones obtained in the step S1 to a single-cylinder hydraulic cone crusher 21 for crushing, and conveying the sand and stones crushed by the single-cylinder hydraulic cone crusher 21 and a multi-cylinder hydraulic cone crusher 22 to a first vibrating screen 23 for screening;
S3, after sand and stones are screened by the first vibrating screen 23, 0-5 mm of sand and stones are conveyed into the first storage bin 5, 5-13 mm of sand and stones with the diameter of 13-35 mm are conveyed into the vertical impact crusher 31, and sand and stones with the diameter of more than 35mm are conveyed into the multi-cylinder hydraulic cone crusher 22;
s4, crushing sand by the vertical impact crusher 31 and conveying the crushed sand to the second vibrating screen 32;
s5, after the sand and stones are screened by the second vibrating screen 32, 20-30 mm sand and stones are conveyed into the second storage bin 6, 5-20 mm sand and stones are conveyed into the third vibrating screen 33, and the rest sand and stones are conveyed into the third storage bin 7 after passing through a humidifying stirrer;
s6, after sand and stones are screened by the third vibrating screen 33, 5-10 mm sand and stones are conveyed into the fourth storage bin 8, 10-20 mm sand and stones are conveyed into the fifth storage bin 9, and the rest sand and stones are conveyed into the vertical impact crusher 31.
Specific implementations of the above-described process include,
(1) 1 Double-section bar screening feeder 11 is selected, the feeding capacity is not less than 600t/h (the model is enlarged so as to screen fine materials in the hole slag stones), trapezoidal bars are arranged at the front end, materials smaller than or equal to 100mm can be screened out and conveyed to a slag soil screen 13 to be screened out, soil waste and sand stone larger than or equal to 20mm are screened out, wherein the waste is conveyed to a waste pile, the quality of a product at a later stage can be ensured, sand stone larger than or equal to 20mm is conveyed to a transfer warehouse 14 through the belt conveyor and does not enter jaw breaking any more to be repeatedly broken, the whole bar screening feeder 11 adopts a variable frequency motor to carry out variable frequency control, and an intelligent feeding mode can be realized manually or through DCS (PLC).
(2) 1C 6X125 jaw crusher 12 with the production capacity not less than 550t/h is selected for coarse crushing, the maximum feeding grain diameter is not less than 800mm, the setting range of a discharge hole is 100-200 mm, and crushed materials are conveyed to a transfer warehouse 14 through a belt conveyor.
(3) The intermediate transfer warehouse 14, wherein the storage of the intermediate transfer warehouse 14 is 0-200 mm of the material (the particle size of the screened material is adjustable) which is pre-screened by the residue soil screen 13 after one break, the full warehouse of the intermediate transfer warehouse 14 can supply two breaks for 3-5 hours for breaking production, the maintenance gap of front and rear end equipment can be effectively utilized for continuous production, the continuity of production is ensured, the working efficiency and the production benefit are improved, and meanwhile, 3 vibrating feeders are configured for stable and continuous feeding of the two breaks.
(4) And (3) two-crushing (medium crushing), namely adopting 1 HST250S1 single-cylinder hydraulic cone crusher 21 with the production capacity of 550t/h, wherein the adjustable range of a discharge hole is 20-60 mm, conveying the sand stone produced by the two-crushing to a first vibrating screen 23 for screening through a belt conveyor, directly feeding the sand stone with the 5-33 mm into a vertical impact crusher 31 for shaping sand, and feeding the sand stone with the 33mm above into three-crushing for fine crushing.
(5) The three crushing (fine crushing) comprises the steps of adopting 2 HPT300M multi-cylinder hydraulic cone crushers 22 with the treatment capacity of 400t/h, crushing sand and stone with the treatment capacity of more than or equal to 33mm after the first vibrating screen 23 is subjected to two-crushing screening, wherein the adjustable range of a discharge hole is 13-45 mm, the discharge specification is 0-33 mm, the two single-cylinder hydraulic cone crushers 21 and the two multi-cylinder hydraulic cone crushers 22 are respectively adopted for medium crushing and fine crushing, the cone load can be reduced, the equipment abrasion is reduced, the raw materials can be crushed in a grading manner, the medium crushing yield and the product particle type integrity can be ensured, meanwhile, the raw materials can be crushed in the shortest time after entering the shaping sand making machine, the cost is prevented from increasing due to repeated crushing, 2 first vibrating screens 23 are selected for screening equipment, the screen specification is 5-33 mm, and the treatment capacity of a single screen is 120-900 t/h. The stone scraps with the size of 0-5 mm are sieved out by the vibrating screen, the stone scraps with the raw materials and the mud content of high or wet can be used for tunnel guniting, the stone scraps with the mud content of low and dry can directly enter a transfer bin of the sand making machine according to the requirements, and crushed stones with the size of 5-33 mm directly enter the sand making machine for transferring materials.
(6) And (4) four-break (shaping and sand making) is carried out by adopting a VSI6X1150 vertical impact crusher 311 table with the processing capacity of 500t/h, mainly carrying out equipment treatment on two-break, three-break 5-33 mm and partial 0-5 mm rapid sand making and shaping, and carrying out equipment treatment on the produced semi-finished product machine-made sand, 5-10, 10-20 and 20-30, wherein the semi-finished product machine-made sand sucks out redundant stone powder through winnowing equipment to achieve machine-made sand meeting the standard requirement, and 5-10, 10-20 and 20-30 crushed stones are subjected to secondary screening and wind power through a second screening machine and a third screening machine to solve the stone powder wrapped on the surface of the crushed stone, and are discharged into a storage bin after the standard requirement is met.
(7) The whole production line adopts dry dedusting, and two bag type dust collectors 10 and a water mist spraying system respectively carry out effective dedusting aiming at most of one break, two breaks, three breaks, four breaks and screening 5. The # 1 dust remover mainly removes dust from the jaw crusher 12, the dregs screen 13, the single-cylinder hydraulic cone crusher 21 and the multi-cylinder hydraulic cone crusher 22, the # 2 dust remover mainly removes dust from the first vibrating screen 23, the second vibrating screen 32 and the blanking points thereof, and the # 3 dust remover mainly removes dust from the vertical impact crusher 31, the third vibrating screen 33 and the blanking points thereof. The effective dust removal and filtration area of the three dust collectors exceeds 1800m < 2 >, so that the full-coverage dust removal of the equipment area can be realized, and the environmental protection requirement is met.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (9)
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| CN117960331A (en) * | 2024-02-01 | 2024-05-03 | 浙江交工国际工程有限公司 | Aggregate self-collection and processing method |
| CN119909834A (en) * | 2024-12-30 | 2025-05-02 | 太原重工股份有限公司 | Semi-jaw crushing station and installation method |
| CN119608379A (en) * | 2025-01-07 | 2025-03-14 | 青龙满族自治县安泉兴黄金有限公司 | A gold wet beneficiation dry discharge process and beneficiation equipment |
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| CN109731661B (en) * | 2019-02-28 | 2023-10-27 | 贵州成智重工科技有限公司 | Five-double-full dry crushing production line for high-quality sand aggregate and processing method |
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