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CN-119608379-B - Dry discharge process for gold wet beneficiation and beneficiation equipment

CN119608379BCN 119608379 BCN119608379 BCN 119608379BCN-119608379-B

Abstract

The invention relates to the technical field of gold beneficiation, and provides a gold wet beneficiation dry discharge process and beneficiation equipment, wherein the gold wet beneficiation dry discharge process comprises the following steps of S1 crushing and screening raw materials to obtain a granular product meeting the specified particle size, S2 grinding, grinding the granular product obtained in the step S1, screening impurities to obtain a powder product, S3 flotation, adding medicines and carrying out flotation treatment on the powder product obtained in the step S2, and carrying out flotation on a gold-containing foam product, S4 dense filter pressing, wherein the foam product in the step S3 is subjected to flocculation and precipitation treatment, gold-containing slime precipitated at the bottom is subjected to filter pressing to obtain final gold-containing mineral powder, and clear water overflowed from the top is subjected to aeration and photolysis treatment and then flows back to the previous steps for use. Through the technical scheme, the problem of large water resource consumption of the traditional mineral separation process in the prior art is solved.

Inventors

  • MA XIAOZHONG
  • An Peichen
  • LI LEI

Assignees

  • 青龙满族自治县安泉兴黄金有限公司

Dates

Publication Date
20260508
Application Date
20250107

Claims (9)

  1. 1. The gold wet ore dressing dry discharge process is characterized by comprising the following steps of: S1, crushing and screening, namely crushing and screening raw materials to obtain a granular product meeting the specified particle size; s2, grinding, namely grinding the granular product obtained in the step S1, and then sieving impurities to obtain a powder product; s3, flotation, namely adding chemicals and carrying out flotation treatment on the powder product obtained in the step S2, and floating out a foam product containing gold; s4, dense filter pressing, namely flocculating and precipitating the foam product in the step S3, and filtering the gold-containing mineral mud precipitated at the bottom to obtain final gold-containing mineral powder, wherein clear water overflowed from the top flows back to the previous step for use after aeration and photolysis treatment; in the step S3, firstly, the powder product obtained in the step S2 is sent into a stirring tank (1), a flotation agent is added into the stirring tank (1), primary flotation is carried out after stirring, and after the product sequentially passes through a primary flotation machine (201), a primary static flotation machine (202) and a secondary static flotation machine (203) in the primary flotation, a foam product and a residual material product are produced; In the step S4, firstly pumping the foam product produced in the step S3 into a first-stage thickener (301) and adding a flocculating agent, wherein gold-containing mineral mud precipitated at the bottom of the first-stage thickener (301) is subjected to filter pressing by a filter press (4) to obtain final gold-containing mineral powder, clean water overflowed from the top of the first-stage thickener (301) is pumped into a second-stage thickener (302) for retreating, and clean water overflowed from the top of the second-stage thickener (302) sequentially enters an aeration tank (5) and a photolysis tank (6) for treating, and the treated water is returned to the previous step for use; In the step S1, a rack (8), a primary crusher (901), a secondary crusher (902), a tertiary crusher (903), a first conveyor belt (1001), a second conveyor belt (1002), a third conveyor belt (1003) and a screening device (11) which are arranged on the rack (8) are used; the heights of the input ends of the first conveying belt (1001) and the second conveying belt (1002) are lower than the heights of the output ends of the first conveying belt (1001), the output end of the first conveying belt (1001) is located above the input end of the second conveying belt (1002), and the output end of the second conveying belt (1002) is located above the input end of the first conveying belt (1001); the screening device (11) is of a two-layer screen structure and is provided with a first-stage discharge hole (1101), a second-stage discharge hole (1102) and a third-stage discharge hole (1103) which are respectively used for screening out particle products with a first-stage particle size, a second-stage particle size and a third-stage particle size, wherein the particle sizes of the first-stage particle size, the second-stage particle size and the third-stage particle size are gradually increased; The output ends of the primary crusher (901) and the tertiary crusher (903) are connected with the input end of the first conveying belt (1001), the input end of the tertiary crusher (903) is connected with the output end of the second conveying belt (1002), and the input end and the output end of the secondary crusher (902) are respectively connected with the input ends of the tertiary discharge hole (1103) and the second conveying belt (1002); In step S1, raw materials are firstly fed into the first-stage crusher (901), the crushed raw materials are lifted and conveyed to the screening device (11) by means of the first conveying belt (1001), the granular products with three-stage grain sizes directly fall into the second-stage crusher (902), the granular products produced by the second-stage crusher (902) and the granular products with two-stage grain sizes are lifted and conveyed to the third-stage crusher (903) by means of the second conveying belt (1002), the granular products produced by the third-stage crusher (903) are returned to the first conveying belt (1001), the crushed raw materials and the crushed raw materials are conveyed to the screening device (11) together, and the granular products with the first-stage grain sizes screened by the screening device (11) are conveyed to step S2 by means of the third conveying belt (1003).
  2. 2. The dry-discharge process for wet gold beneficiation according to claim 1, wherein in the step S3, the produced residue product is subjected to secondary flotation, and a foam product and a tailing product are produced after the secondary flotation, wherein the foam product is returned to the primary flotation for reprocessing, the tailing product is sent to a cyclone (7), coarse sand product and fine sand product are obtained after cyclone classification treatment, the coarse sand product is subjected to filter pressing to obtain a byproduct with gold content lower than that of gold-containing mineral powder, and the fine sand product is sent to the first-stage thickener (301) in the step S4.
  3. 3. The dry-discharge process for gold wet ore dressing according to claim 1, wherein in the step S2, two working states are provided, namely, a state of starting only the primary ball mill (1201) and a state of starting both the primary ball mill (1201) and the secondary ball mill (1202) simultaneously; When the primary ball mill (1201) is only started, the granular product with the primary particle size firstly enters the primary ball mill (1201) to be ground into powder product, then enters the spiral classifier (13) to produce a large-particle-size product and a small-particle-size product, the large-particle-size product flows back to the primary ball mill (1201), and the small-particle-size product screens out impurities and then is sent to the step S3; When the primary ball mill (1201) and the secondary ball mill (1202) are simultaneously started, the granular product with the primary particle size firstly enters the primary ball mill (1201) to be ground into powder product, then enters the spiral classifier (13) to produce a large-particle-size product and a small-particle-size product, the large-particle-size product is sent to the secondary ball mill (1202), and is sent to the spiral classifier (13) after being subjected to secondary ball milling, and the small-particle-size product is sent to the step S3 after impurities are screened out.
  4. 4. The utility model provides a gold mineral processing equipment, is applied to a gold wet process ore dressing dry row technology of claim 1, its characterized in that, screening plant (11) include casing (14), pivot (15), one-level screen cloth (16) and second grade screen cloth (17), pivot (15) are in around self axis direction swing setting in casing (14), pivot (15) are arranged along the material direction of delivery, one-level screen cloth (16) are located on pivot (15), second grade screen cloth (17) elastic vibration is located in casing (14).
  5. 5. A gold beneficiation equipment according to claim 4, further comprising a telescopic member (18), a rack (19) and a gear (20), wherein the telescopic member (18) is arranged on the housing (14), the rack (19) is slidably arranged on the housing (14), the telescopic end of the telescopic member (18) is connected with the rack (19), the gear (20) is coaxially arranged on the rotating shaft (15), and the gear (20) is meshed with the rack (19).
  6. 6. A gold beneficiation apparatus in accordance with claim 4, further comprising a vibration mechanism (21), the vibration mechanism (21) for driving the secondary screen (17) to vibrate, The vibrating mechanism (21) comprises a swinging frame (2101), vibrating motors (2102) and knocking rollers (2103), wherein the swinging frame (2101) is Y-shaped and is provided with a left upper end, a right upper end and a lower end, the middle part of the swinging frame (2101) is hinged on the shell (14), the vibrating motors (2102) are arranged at the lower end of the swinging frame (2101), the number of the knocking rollers (2103) is two, the left upper end and the right upper end of the swinging frame (2101) are respectively arranged in a rotating mode, The vibration motor (2102) is started and then used for providing a swinging force for the swinging frame (2101), and the swinging frame (2101) is started and then used for enabling the two knocking rollers (2103) to alternately knock the secondary screen (17).
  7. 7. A gold beneficiation equipment according to claim 4, wherein the inner wall of the shell (14) is provided with an arc-shaped groove (22), two side edges of the primary screen (16) slide in the arc-shaped groove (22), and the gold beneficiation equipment further comprises a spring (23), and two ends of the spring (23) are respectively connected with the inner wall of the arc-shaped groove (22) and the primary screen (16).
  8. 8. A gold beneficiation equipment according to claim 7, further comprising a water delivery inner pipe (24), a water delivery outer pipe (25), an atomizing nozzle (26) and a high pressure nozzle (27), wherein the water delivery inner pipe (24) is arranged on the inner wall of the shell (14) and is positioned in the arc-shaped groove (22), the water delivery inner pipe (24) is used for being connected with an external water supply device, the water delivery inner pipe (24) is provided with an atomizing water supply hole (28) and a high pressure water supply hole (29), the water delivery outer pipe (25) is rotatably arranged outside the water delivery inner pipe (24), the atomizing nozzle (26) and the high pressure nozzle (27) are arranged on the water delivery outer pipe (25), the atomizing nozzle (26) and the high pressure nozzle (27) face the bottom surface of the primary screen (16), and after the water delivery outer pipe (25) is rotated, the atomizing water supply hole (28) is communicated with the atomizing nozzle (26) or the high pressure water supply hole (29) is communicated with the high pressure nozzle (27).
  9. 9. A gold beneficiation equipment according to claim 8, wherein the outer water delivery pipe (25) is provided with a clamping part (30), the inner water delivery pipe (24) is provided with two limiting parts (31), the clamping part (30) is positioned between the two limiting parts (31) and used for limiting the sliding limit position of the outer water delivery pipe (25).

Description

Dry discharge process for gold wet beneficiation and beneficiation equipment Technical Field The invention relates to the technical field of gold beneficiation, in particular to a gold wet beneficiation dry discharge process and beneficiation equipment. Background Gold dressing is a process of separating and extracting gold from other minerals in ore, generally comprising crushing and grinding, gravity separation and flotation, stirring and aerating in a flotation machine to enable gold minerals to be selectively attached to bubbles, float to the surface of ore pulp to form a foam layer, scraping foam to contain gold concentrate, and leaving the tailings in the ore pulp. Firstly, in the traditional beneficiation process, a large amount of water is needed in each process, and the water resource consumption in the whole process flow is large, so that the concept of environmental protection and water saving is not facilitated. In addition, in the traditional beneficiation process, a tailing pond needs to be designed in a system to store tailings, the tailing pond needs to occupy a large space, and a part of products with low gold content still exist in the tailings. Aiming at the problems, the prior art does not solve the problems well, and brings trouble to the normal operation in the field, so that a gold wet ore dressing dry discharge process and ore dressing equipment are needed to solve the problems. Disclosure of Invention The invention provides a gold wet beneficiation dry discharge process and beneficiation equipment, which solve the problem of high water resource consumption of the traditional beneficiation process in the related technology. The technical scheme of the invention is as follows, a gold wet ore dressing dry-discharging process comprises the following steps: S1, crushing and screening, namely crushing and screening raw materials to obtain a granular product meeting the specified particle size; s2, grinding, namely grinding the granular product obtained in the step S1, and then sieving impurities to obtain a powder product; s3, flotation, namely adding chemicals and carrying out flotation treatment on the powder product obtained in the step S2, and floating out a foam product containing gold; s4, dense filter pressing, namely flocculating and precipitating the foam product in the step S3, and filtering the gold-containing mineral mud precipitated at the bottom to obtain final gold-containing mineral powder, wherein clear water overflowed from the top flows back to the previous step for use after aeration and photolysis treatment; In the step S3, firstly, the powder product obtained in the step S2 is sent into a stirring tank, a flotation agent is added into the stirring tank, primary flotation is carried out after stirring, and the product sequentially passes through a primary flotation machine, a primary static flotation machine and a secondary static flotation machine in the primary flotation to produce a foam product and a residual material product; In the step S4, firstly pumping the foam product produced in the step S3 into a primary thickener and adding a flocculating agent, filtering and pressing gold-containing mineral mud precipitated at the bottom of the primary thickener by a filter press to obtain final gold-containing mineral powder, pumping clear water overflowed from the top of the primary thickener into a secondary thickener for retreatment, and sequentially enabling clear water overflowed from the top of the secondary thickener to enter an aeration tank and a photolysis tank for treatment, wherein the treated water flows back to the previous step for use. Optionally, in step S3, the produced residue product is subjected to secondary flotation, and a foam product and a tailing product are produced after the secondary flotation, wherein the foam product is returned to the primary flotation for reprocessing, the tailing product is sent to a cyclone, coarse sand product and fine sand product are obtained after cyclone classification treatment, the coarse sand product is subjected to filter pressing to obtain a byproduct with gold content lower than that of gold-containing mineral powder, and the fine sand product is sent to the primary thickener in step S4. Optionally, in step S1, a frame is used, and a primary crusher, a secondary crusher, a tertiary crusher, a first conveyor belt, a second conveyor belt, a third conveyor belt and a screening device are mounted on the frame; The heights of the input ends of the first conveying belt and the second conveying belt are lower than the heights of the output ends of the first conveying belt and the second conveying belt, the output end of the first conveying belt is positioned above the input end of the second conveying belt, and the output end of the second conveying belt is positioned above the input end of the first conveying belt; The screening device is of a two-layer screen structure and is provided with a first-stage discharg