CN103041986A - Vibrating screen ore-feeding device - Google Patents
Vibrating screen ore-feeding device Download PDFInfo
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- CN103041986A CN103041986A CN201310015666XA CN201310015666A CN103041986A CN 103041986 A CN103041986 A CN 103041986A CN 201310015666X A CN201310015666X A CN 201310015666XA CN 201310015666 A CN201310015666 A CN 201310015666A CN 103041986 A CN103041986 A CN 103041986A
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Abstract
The invention relates to a vibrating screen ore-feeding device which is characterized in that the vibrating screen ore-feeding device comprises a totally enclosed cylindrical box; a sealing cover is arranged above a cylindrical box; triangle lifting holes are formed on bilateral sides of the sealing cover and a spray-proof sealing door and an ore-feeding pipe are arranged in the center of the sealing cover; the middle of the cylindrical box is provided with a buffering ore pulp feeding center cylinder and an ore discharging hole is formed on the lateral wall of a center cylinder; the inner wall of the cylindrical box, the bottom of the cylindrical box, the inner wall of a center cylinder and the outer wall of a center cylinder are respectively provided with a wear-resistant plate; the outer side of a center cylinder is provided with 2N ore separating plates which separate the cylindrical box into N ore separating areas and N ore discharging areas, the lower portion of every ore discharging area is provided with an ore discharging pipe, and an outlet of the external end of every ore discharging pipe is arranged into a fan shape; a wear-resistant composite ore-feeding ball valve is arranged above every ore discharging pipe and an adjusting screw rod, an adjusting nut and a hand wheel are connected above every ore-feeding ball valve; and eight trapezoidal reinforcing-rib plates are uniformly arranged outside the cylindrical box along a periphery. The vibrating screen ore-feeding device has the advantages of achieving the uniform ore-feeding operation, improving the screening efficiency, being capable of automatically adjusting the flow of ore pulp and good in wear resistance and extending the service life.
Description
Technical field
The present invention relates to a kind of vibratory sieve mine-feeding equipment, belong to the mine ore dressing mechanical field.
Background technology
The high mouthful iron ore of Taiyuan Iron and Steel Co. with 13 imported from America Derrick 2SG48-60W-5STK No. five high frequency shale shakers (hereinafter to be referred as the import vibratory sieve, the two vibrators of 2 expressions, SG represents the powerful vibration of super cracity, exciting force 7.3g, W represents the wet wet screening, 5 expressions five tunnel, STK represents that stack is overlapping), it is 0～0.5 millimeter with granularity, concentration is that 35%～45% iron ore slurry carries out classification, treating capacity 100～120t/h, use to be stainless steel mesh, screen size 0.075 * 0.075mm is " throat " equipment of iron ore slurry classification, undersize degree certified products enter the subsequent processing magnetic separation, Iron Ore Powder granularity defective work enters ball mill again and regrinds on the sieve, and so automatic cycle is reciprocal, and it is the crucial classifying equipoment that can whole system sort and finish year 2200000 tons of Iron Ore Powder.
The defective that former import vibratory sieve mine-feeding equipment exists: (1) in use, the problem such as former import vibratory sieve frequent occurrence ore pulp is large to the ore deposit fluctuation, gives the ore deposit inhomogeneous, and classification efficiency is low, and machine vibration is large; (2) the original feed casing just utilizes rectangle to carry out simply to the ore deposit to casing side opening five holes, ore deposit, do not regulate screw mandrel, it can not be realized evenly to the ore deposit, can not regulate again to the ore deposit uninterrupted, cause import vibratory sieve five tunnel to be subjected to the ore deposit different, the difficult problems such as classification efficiency is low, loads inhomogeneous, and machine vibration is large; (3) former rectangle to the fatal shortcoming of ore deposit casing is: can not control to the ore deposit uninterrupted, can not advance ore deposit, even ore removal in the realization center, it is inhomogeneous to the ore deposit that ore pulp often appears in process of production, the ore removal fluctuation is large, service life is short, take up room large, leak the difficult problem such as ore deposit, and cause import vibrosieve stage efficiency low, load inhomogeneous the problem that machine vibration is large.
Summary of the invention
In order to overcome above-mentioned deficiency, the present invention aims to provide a kind of vibratory sieve mine-feeding equipment, can realize evenly to the ore deposit, arbitrarily adjust flux size, the target such as the life-span is long, classification efficiency is high, load is even, satisfy the import vibratory sieve to the ore deposit requirement.
The technical solution used in the present invention is as follows:
A kind of vibratory sieve mine-feeding equipment is characterized in that: comprise totally-enclosed cylindrical box, the casing top is seal cover, and the seal cover both sides are provided with the triangle handle hole, and the seal cover centre is provided with splashproof hermatic door and mineral-feeding pipe; Be provided with buffering in the middle of the casing and advance the ore pulp central tube, the central tube sidewall is provided with the ore removal hole; Be provided with the 2N piece in the central tube outside and every the ore deposit plate casing be divided into N and go out the mining area every mining area and N, each goes out the below, mining area and is equipped with out pipe, goes out the outlet of pipe outer end and is set to fan-shaped; Going out to be provided with above the pipe wear-resisting compoundly to the ore deposit ball valve, connect for ball valve top, ore deposit and regulate screw mandrel, regulate screw and adjusting handle, give the ore deposit ball valve and regulate the screw mandrel welding, regulate screw and be positioned at the seal cover below; The inwall of cylindrical box, bottom, central tube inwall, outer wall are equipped with wearing plate; Be evenly distributed with four basic lower margins around the cylindrical shape ore pulp bottom half, lower margin is fixed with hex bolts; The cylindrical box outside arranges eight trapezoidal reinforcement gussets along even circumferential, strengthens gusset and is welded on the base; Wherein N is not less than 4 positive integer.
In the such scheme, described cylindrical box volume is 0.5～2 cubic metre, increases the ore pulp buffer bin.
In the such scheme, the appearance and size of described triangle handle hole is length * wide * bore dia=(100～200) * (80～100) * (Φ 40～Φ 80) mm, is processed into 5 * 45 ° of chamferings around the handle hole.
In the such scheme, described ore removal hole is distributed on the central tube sidewall, is divided into up and down two row, and descending from bottom half 300 ~ 400mm, line space is 300 ~ 400mm, and the ore removal bore dia is Φ 200 ~ 250mm.
In the such scheme, described to go out pipe appearance and size be diameter * length=(Φ 159～Φ 259) * (200～400) mm, is evenly arranged on (Φ 700～Φ 900) mm circumference.
In the such scheme, the described wear-resisting compound ore deposit ball valve of giving, its material outside is abrasive rubber, the inside is cast steel ZG45II, its ball appearance and size Φ 200～Φ 350mm, the inside is steel ball, its ball appearance and size Φ 120mm.
In the such scheme, described adjusting screw mandrel and adjusting screw, its appearance and size is T36 * 6～T56 * 6mm; Described adjusting handle appearance and size Φ 250～Φ 350mm was with 6 minutes steel pipe manufacturings.
In the such scheme, described every the mining area with go out the mining area and be arc, when N is 5, it is 48 ° that arc goes out corresponding circle heart angle, mining area, it is inner/outer diameter=(Φ 450～Φ 600)/(Φ 800～Φ 1500) mm that arc goes out mining area appearance and size, corresponding central angle is 24 ° every the mining area, for going out half of corresponding circle heart angle, mining area.
In the such scheme, described wearing plate is glass cermaic plate, and appearance and size is length * wide * thick=(100～150) * (20～50) * (20～30) mm, adhesive material cement mortar and 107 glue, ratio is 3:1, carries out spontaneous curing after the stickup 120～160 hours, and solidification temperature is 15 ℃～25 ℃.
In the such scheme, described lower margin spacing is 90 °, and appearance and size is aperture * length=(Φ 25～Φ 40) * (50～70) mm, fixes with M24 * 100 hex bolts.
The present invention utilizes minute design, the embedded process designs such as even circumferential N, to enter dexterously the ore deposit and N road ore removal embeds in the same cylinder, enter the ore deposit in the middle of taking, the mode of the even ore removal of circumference N equal portions, and flow wear resistance ball valve, Flow-rate adjustment screw mandrel etc. are controlled in design, regulate the ore removal uninterrupted by regulating the wear resistance ball valve openings of sizes, going out pipe outer end design duckbilled plate, guaranteed even ore removal, make that the import vibratory sieve is stressed evenly, machine vibration reduces greatly, meet designing requirement, realize evenly to targets such as ore deposit and import vibrosieve stage efficiency height.
Utilize empty isolated design concept, innovative design mine-feeding equipment inwall, base plate and central tube inside and outside wall cylinder are pasted wear-resisting cast stone piece, have avoided ore pulp grinding mine-feeding equipment, and mine-feeding equipment has wearability, has prolonged service life.
Beneficial effect of the present invention:
(1) realizes that import vibratory sieve N road is evenly to ore deposit and uninterrupted control, reach uniform load, reduce vibration, reduction power mono-consumption and the mechanical disorder of machine, improve efficient and the operating rate of import vibrosieve, screening efficiency has improved 20%～30%, satisfies the requirement of lower road magnetic separation process ore grain size and output;
(2) the design wearing plate has improved mine-feeding equipment service life, improved concentrate output, improve 35.6% for ore deposit efficient, use this device and repair wear-resisting glass cermaic plate as long as checked in per 2～3 years, changing once wear-resisting glass cermaic plate in per 5～6 years gets final product, iron ore slurry can not impact, grinding improve after mine-feeding equipment, prolonged 20 times of mine-feeding equipment service lifes, expectation will be saved the mine-feeding equipment spare part and be taken 1,950,000 yuan;
(3) this apparatus structure is simple, even, multiple functional, elegant in appearance to the ore deposit, effectively utilized the space, be worthy to be popularized, the present invention is applicable to all vibratory sieve ore pulps to the ore deposit, particularly Derrick 2SG48-60W-5STK five tunnel import vibratory sieves are to the ore deposit best results, and being used for the ore pulps such as other import vibratory sieve, cyclone, magnetic separator, slag stock pump also has good effect to the ore deposit.
Description of drawings
Fig. 1 is the cutaway view of the embodiment of the invention 1.
Fig. 2 is the top view of Fig. 1.
Fig. 1 cuts open by A-A line among Fig. 2.
Among the figure 1, handle hole, 2, seal cover, 3, casing, 4, central tube, 5, the ore removal hole, 6, wearing plate, 7, mineral-feeding pipe, 8, go out pipe, 9, give the ore deposit ball valve, 10, regulate screw mandrel, 11, regulate screw, 12, adjusting handle, 13, every the ore deposit plate, 14, strengthen gusset, 15, go out the mining area, 16, every the mining area, 17, base.
The specific embodiment
Further specify the present invention below by embodiment, but be not limited to following examples.
Embodiment 1:
As shown in Figure 1, 2, be provided with five vibratory sieve mine-feeding equipments that go out the mining area, comprise totally-enclosed cylindrical box 3, casing 3 tops are seal cover 2, and seal cover 2 both sides are provided with triangle handle hole 1, and seal cover 2 centres are provided with splashproof hermatic door and mineral-feeding pipe 7; Be provided with buffering in the middle of the casing 3 and advance ore pulp central tube 4, central tube 4 sidewalls are provided with ore removal hole 5; Be provided with ten in central tube 4 outsides and every ore deposit plate 13 casing be divided into five and go out mining area 15 every mining area 16 and five, each goes out 15 belows, mining area and is equipped with out pipe 8, goes out the outlet of pipe 8 outer ends and is set to fan-shaped; Going out to be provided with above the pipe 8 wear-resisting compoundly to ore deposit ball valve 9, connect for ore deposit ball valve 9 tops and regulate screw mandrel 10, regulate screw 11 and adjusting handle 12, give ore deposit ball valve 9 and regulate screw mandrel 10 welding, regulate screw 11 and be positioned at seal cover 2 belows; The inwall of cylindrical box 3, bottom, central tube inwall, outer wall are equipped with wearing plate 6; Be evenly distributed with four basic lower margins around cylindrical shape ore pulp casing 3 bottoms, lower margin is fixed with hex bolts; Cylindrical box 3 outsides arrange eight trapezoidal reinforcement gussets 14 along even circumferential, strengthen gusset 14 and are welded on the base 17.
Concrete preparation method is:
1. design cylindrical shape ore pulp casing: design outline is of a size of (Φ 800～Φ 1500) * (800～1000) mm, and 0.8 cubic metre of volume increases by 1.5 tons of ore pulp buffer bins;
2. the design buffering is advanced the ore pulp central tube in the middle of the ore pulp casing: profile is diameter * length=(Φ 450～Φ 600) * (700～900) mm; Design ore removal hole Φ 200～Φ 259mm around the central tube; The ore removal hole is distributed on central tube Φ 540 sidewalls, is divided into two rows, and lower row is from bottom 300 ~ 400mm, and spacing is 300 ~ 400mm, and the hole is Φ 200 ~ Φ 250mm;
3. on the ore pulp casing, design splashproof hermatic door, mineral-feeding pipe: according to casing size and disposal ability, design splashproof hermatic door appearance and size is diameter * thickness=(Φ 1000～Φ 1800) * (4～10) mm; Design mineral-feeding pipe appearance and size is diameter * length=(Φ 200～Φ 400) * (200～400) mm;
4. utilize around the mine-feeding equipment cylinder body bottom every the ore deposit plate totally ten be divided into five and go out mining area and five every the mining area, it is characterized in that in order to guarantee even ore removal, going out corresponding circle heart angle, mining area and be 48 °, namely to go out mining area appearance and size be inner/outer diameter * fan-shaped angle=(Φ 450～Φ 600)/(Φ 800～Φ 1500) mm * 48 °, fan-shaped is inner/outer diameter * fan-shaped angle=(Φ 450～Φ 600)/(Φ 800～Φ 1500) mm * 24 ° every mining area appearance and size, its objective is to guarantee around the mine-feeding equipment even ore removal and strengthen intensity between central tube and the mine-feeding equipment cylindrical shell;
5. each goes out the mining area bottom design and goes out pipe, and appearance and size is (Φ 159～Φ 259) * (200～400) mm, is evenly arranged on (Φ 700～Φ 900) mm circumference; Going out pipe outer end design duckbilled plate structure in addition, its material is wear-resistant rubber sheet, is shaped as fan-shapedly, guarantees even ore removal;
6. in order to guarantee every the even ore removal in mining area, the wear resistance ball valve of design control uninterrupted on five road mineral-feeding pipes: it is characterized in that according to wear-resisting compound to the ore deposit ball valve to five of ore deposit uninterrupted designs, its material outside is abrasive rubber, the inside is cast steel ZG45II, its ball appearance and size Φ 200～Φ 350mm, the inside is steel ball, its ball appearance and size Φ 120mm; Give above the ball valve of ore deposit compound, according to regulating screw mandrel for ore deposit uninterrupted design discharge and regulating screw, its appearance and size T36 * 6～T56 * 6mm; Basis is given ore deposit uninterrupted design adjusting handle on the Flow-rate adjustment screw mandrel, its appearance and size Φ 250～Φ 350mm, and with 6 minutes steel pipe manufacturings, shape was as vehicle steering; Wear-resisting compound ore deposit ball valve and the screw mandrel bind mode given is welding, and welding rod is chosen as J507; The purpose that designs this device is the control uninterrupted, realizes that import vibratory sieve five tunnel evenly to the ore deposit, reaches the screening efficiency maximization;
7. paste wear-resisting glass cermaic plate: build company by the unit in charge of construction ore deposit and advance the inside and outside wall of ore chimney at import vibratory sieve mine-feeding equipment inwall, bottom and center and paste wear-resisting glass cermaic plate, glass cermaic plate appearance and size is length * wide * thick=(100～150) * (20～50) * (20～30) mm, adhesive material cement mortar and 107 glue, ratio is 3:1, carries out spontaneous curing after the stickup 120～160 hours;
8. at 8 trapezoidal reinforcement gussets of mine-feeding equipment cylindrical shell 3 outsides design, it is characterized in that basis is to ore deposit weight and production capacity, design wide on the trapezoidal reinforcement steel plate/lower wide * height * thick=(200～300)/(400～600) * (80～200) * (8～16) mm, be evenly arranged in the circumferential direction of the circle 8;
9. on the ore pulp casing, utilize the steel plate design triangle handle hole 1 of (10～20) mm thickness, appearance and size is length * wide * bore dia=(100～200) * (80～100) * (Φ 40～Φ 80) mm, in order to prevent from cutting off steel wire rope, is processed into 5 * 45 ° of chamferings around the handle hole;
10. design four basic lower margins around the cylindrical shape ore pulp bottom half, it is characterized in that in order to guarantee that mine-feeding equipment connects reliably, vibration is little, ore removal is even, design four basic lower margins, spacing is 90 °, appearance and size is aperture * length=(Φ 25～Φ 40) * (50～70) mm, fixes with M24 * 100 hex bolts.
After the improvement: realize the import vibratory sieve evenly to the ore deposit, machine vibration reduces, and reaches the screening efficiency maximization, and screening efficiency improves 20%～30%, at utmost realizes evenly to ore deposit, the most excellent purpose of screening efficiency.
Embodiment 2:
Be provided with six vibratory sieve mine-feeding equipments that go out the mining area:
Utilize around the mine-feeding equipment cylinder body bottom every the ore deposit plate totally ten two be divided into six and go out mining area and six every the mining area, it is characterized in that in order to guarantee even ore removal, going out corresponding circle heart angle, mining area is 40 °, fan-shaped is inner/outer diameter * fan-shaped angle=(Φ 450～Φ 600)/(Φ 800～Φ 1500) mm * 20 ° every mining area appearance and size, its objective is to guarantee around the mine-feeding equipment even ore removal and strengthen intensity between central tube and the mine-feeding equipment cylindrical shell; Each goes out the mining area bottom design and goes out pipe.Remaining part and embodiment 1 are same.
Embodiment 3:
Be provided with eight vibratory sieve mine-feeding equipments that go out the mining area:
Utilize around the mine-feeding equipment cylinder body bottom every the ore deposit plate totally ten six be divided into eight and go out mining area and eight every the mining area, it is characterized in that in order to guarantee even ore removal, going out corresponding circle heart angle, mining area is 30 °, fan-shaped is inner/outer diameter * fan-shaped angle=(Φ 450～Φ 600)/(Φ 800～Φ 1500) mm * 15 ° every mining area appearance and size, its objective is to guarantee around the mine-feeding equipment even ore removal and strengthen intensity between central tube and the mine-feeding equipment cylindrical shell; Each goes out the mining area bottom design and goes out pipe.Remaining part and embodiment 1 are same.
Claims (10)
1. vibratory sieve mine-feeding equipment is characterized in that: comprise totally-enclosed cylindrical box, the casing top is seal cover, and the seal cover both sides are provided with the triangle handle hole, and the seal cover centre is provided with splashproof hermatic door and mineral-feeding pipe; Be provided with buffering in the middle of the casing and advance the ore pulp central tube, the central tube sidewall is provided with the ore removal hole; Be provided with the 2N piece in the central tube outside and every the ore deposit plate casing be divided into N and go out the mining area every mining area and N, each goes out the below, mining area and is equipped with out pipe, goes out the outlet of pipe outer end and is set to fan-shaped; Going out to be provided with above the pipe wear-resisting compoundly to the ore deposit ball valve, connect for ball valve top, ore deposit and regulate screw mandrel, regulate screw and adjusting handle, give the ore deposit ball valve and regulate the screw mandrel welding, regulate screw and be positioned at the seal cover below; The inwall of cylindrical box, bottom, central tube inwall, outer wall are equipped with wearing plate; Be evenly distributed with four basic lower margins around the cylindrical shape ore pulp bottom half, lower margin is fixed with hex bolts; The cylindrical box outside arranges eight trapezoidal reinforcement gussets along even circumferential, strengthens gusset and is welded on the base; Wherein N is not less than 4 positive integer.
2. vibratory sieve mine-feeding equipment according to claim 1, it is characterized in that: described cylindrical box volume is 0.5～2 cubic metre, increases the ore pulp buffer bin.
3. vibratory sieve mine-feeding equipment according to claim 1, it is characterized in that: the appearance and size of described triangle handle hole is length * wide * bore dia=(100～200) * (80～100) * (Φ 40～Φ 80) mm, is processed into 5 * 45 ° of chamferings around the handle hole.
4. vibratory sieve mine-feeding equipment according to claim 1, it is characterized in that: described ore removal hole is distributed on the central tube sidewall, is divided into up and down two row, and descending from bottom half 300 ~ 400mm, line space is 300 ~ 400mm, and the ore removal bore dia is Φ 200 ~ 250mm.
5. vibratory sieve mine-feeding equipment according to claim 1 is characterized in that: described to go out pipe appearance and size be diameter * length=(Φ 159～Φ 259) * (200～400) mm, is evenly arranged on (Φ 700～Φ 900) mm circumference.
6. vibratory sieve mine-feeding equipment according to claim 1 is characterized in that: the described wear-resisting compound ore deposit ball valve of giving, and its material outside is abrasive rubber, the inside is cast steel ZG45II, its ball appearance and size Φ 200～Φ 350mm, the inside is steel ball, its ball appearance and size Φ 120mm.
7. vibratory sieve mine-feeding equipment according to claim 1 is characterized in that: described adjusting screw mandrel and regulate screw, and its appearance and size is T36 * 6～T56 * 6mm; Described adjusting handle appearance and size Φ 250～Φ 350mm was with 6 minutes steel pipe manufacturings.
8. vibratory sieve mine-feeding equipment according to claim 1, it is characterized in that: described every the mining area with go out the mining area and be arc, when N is 5, it is 48 ° that arc goes out corresponding circle heart angle, mining area, it is inner/outer diameter=(Φ 450～Φ 600)/(Φ 800～Φ 1500) mm that arc goes out mining area appearance and size, corresponding central angle is 24 ° every the mining area, for going out half of corresponding circle heart angle, mining area.
9. vibratory sieve mine-feeding equipment according to claim 1, it is characterized in that: described wearing plate is glass cermaic plate, appearance and size is length * wide * thick=(100～150) * (20～50) * (20～30) mm, adhesive material cement mortar and 107 glue, ratio is 3:1, carry out spontaneous curing 120～160 hours after the stickup, solidification temperature is 15 ℃～25 ℃.
10. vibratory sieve mine-feeding equipment according to claim 1, it is characterized in that: described lower margin spacing is 90 °, appearance and size is aperture * length=(Φ 25～Φ 40) * (50～70) mm, fixes with M24 * 100 hex bolts.
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| CN201310015666.XA CN103041986B (en) | 2013-01-16 | 2013-01-16 | Vibrating screen ore-feeding device |
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| CN201310015666.XA CN103041986B (en) | 2013-01-16 | 2013-01-16 | Vibrating screen ore-feeding device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105251623A (en) * | 2015-11-23 | 2016-01-20 | 四川安宁铁钛股份有限公司 | Middling ore box of flotation machine |
| CN110052063A (en) * | 2019-04-10 | 2019-07-26 | 昆明理工大学 | A kind of inclined shallow layer sedimentation and thickening machine even material feeding device with half mould dregs separating device |
| CN110961246A (en) * | 2018-09-30 | 2020-04-07 | 南京梅山冶金发展有限公司 | Novel automatic ore feeding adjusting device of ore separation box |
| CN112934676A (en) * | 2021-02-04 | 2021-06-11 | 广东韶钢松山股份有限公司 | Method for reducing hardening of raw ore vibrating screen |
| CN117066107A (en) * | 2023-10-16 | 2023-11-17 | 甘肃省地质矿产勘查开发局第三地质矿产勘查院 | Be applied to piece removal equipment that charcoal thick liquid method carried gold |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105251623A (en) * | 2015-11-23 | 2016-01-20 | 四川安宁铁钛股份有限公司 | Middling ore box of flotation machine |
| CN110961246A (en) * | 2018-09-30 | 2020-04-07 | 南京梅山冶金发展有限公司 | Novel automatic ore feeding adjusting device of ore separation box |
| CN110052063A (en) * | 2019-04-10 | 2019-07-26 | 昆明理工大学 | A kind of inclined shallow layer sedimentation and thickening machine even material feeding device with half mould dregs separating device |
| CN110052063B (en) * | 2019-04-10 | 2021-07-02 | 昆明理工大学 | Take half type to separate even feeder of thickener is subsided to shallow layer to one side of sediment ware |
| CN112934676A (en) * | 2021-02-04 | 2021-06-11 | 广东韶钢松山股份有限公司 | Method for reducing hardening of raw ore vibrating screen |
| CN117066107A (en) * | 2023-10-16 | 2023-11-17 | 甘肃省地质矿产勘查开发局第三地质矿产勘查院 | Be applied to piece removal equipment that charcoal thick liquid method carried gold |
| CN117066107B (en) * | 2023-10-16 | 2023-12-12 | 甘肃省地质矿产勘查开发局第三地质矿产勘查院 | Be applied to piece removal equipment that charcoal thick liquid method carried gold |
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|---|---|
| CN103041986B (en) | 2015-03-25 |
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