A beneficiation system for complex polymetallic gold concentrates
Patent Information
- Application Number
- CN202522123463.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-09
- Publication Date
- 2026-09-15
- Estimated Expiration
- 2035-10-09
AI Technical Summary
1、本实用新型通过设置破碎单元、球磨单元、筛分模块、粗选单元、精选单元、尾矿处理单元、金属回收单元和药剂添加单元，从破碎、球磨、筛分到粗选、精选、尾矿处理各个环节紧密配合，能够充分解离和回收含复杂多金属金精矿中的各种有价金属，在粗选单元通过添加合适的药剂，实现了对含金矿物和其他有价金属矿物的初步富集，精选单元进一步对粗精矿进行提纯，提高了精矿的品位，尾矿处理单元对尾矿进行再处理，有效回收了尾矿中残留的有价金属，大大提高了金、银、铜、铅、锌等金属的综合回收率，减少了资源浪费。
Smart Images
Figure CN224749230U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gold mining beneficiation and processing technology, specifically a beneficiation system for complex polymetallic gold concentrate. Background Technology
[0002] With the development of the gold mining industry, the resources of complex polymetallic gold concentrates are increasing day by day. In addition to gold as the main target metal, these gold concentrates often contain a variety of valuable metals such as silver, copper, lead, and zinc. Due to the extremely complex occurrence of each metal, they are closely interlocked and exhibit fine-grained and micro-fine-grained interlocking characteristics. Furthermore, the ore also contains a large number of gangue minerals.
[0003] In the mineral processing process, gravity separation alone is not enough to effectively separate fine-grained valuable metal minerals. Although flotation is widely used, it is very difficult to achieve selective separation of each metal in ores with complex polymetallic coexistence and intercalation relationships. The metal recovery rate is low, the concentrate grade is not high, and the treatment of tailings is not perfect. Tailings often contain a large amount of unrecovered valuable metals, resulting in a waste of resources.
[0004] To address the aforementioned technical problems, it is necessary to design a mineral processing system for complex polymetallic gold concentrates. Utility Model Content
[0005] The purpose of this invention is to provide a mineral processing system for complex polymetallic gold concentrate, which has the advantages of effectively recovering valuable metals remaining in tailings and improving the overall metal recovery rate. It solves the problems of traditional mineral processing equipment, such as difficulty in selectively separating various metals, low metal recovery rate, and inadequate tailings treatment.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a mineral processing system for complex polymetallic gold concentrate, comprising a crushing unit, a ball milling unit connected to the discharge port of the crushing unit, a screening module connected to the discharge port of the ball milling unit, a roughing unit connected to the discharge port of the screening module, a cleaning unit connected to one side of the roughing unit, a tailings treatment unit connected to one side of the cleaning unit, a metal recovery unit connected to one side of the tailings treatment unit, and a reagent addition unit connected to one side of each of the roughing unit, the cleaning unit, and the tailings treatment unit.
[0007] Preferably, the discharge port of the screening module is connected to a material return conveying module, and the discharge port of the material return conveying module is connected to the feed port of the ball mill unit.
[0008] Preferably, the roughing unit includes a flotation machine and an aeration module, and the cleaning unit includes a primary cleaning device, a secondary cleaning device, and a middlings return device.
[0009] Preferably, the drug addition unit includes a drug storage tank, a drug metering pump, and a drug mixer.
[0010] Preferably, the tailings treatment unit includes tailings thickening equipment, tailings regrinding equipment, and tailings re-selection equipment, and the metal recovery unit includes cyanide leaching equipment, zinc powder replacement equipment, and electrolysis equipment.
[0011] Preferably, the crushing unit includes a jaw crusher and a cone crusher, with the discharge port of the jaw crusher connected to the feed port of the cone crusher.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model, by setting up a crushing unit, ball milling unit, screening module, roughing unit, cleaning unit, tailings treatment unit, metal recovery unit, and reagent addition unit, closely coordinates each stage from crushing, ball milling, screening to roughing, cleaning, and tailings treatment. It can fully dissociate and recover various valuable metals in complex polymetallic gold concentrate. In the roughing unit, by adding appropriate reagents, the gold-bearing minerals and other valuable metal minerals are initially enriched. The cleaning unit further purifies the rough concentrate, improving the grade of the concentrate. The tailings treatment unit reprocesses the tailings, effectively recovering the remaining valuable metals in the tailings, greatly improving the comprehensive recovery rate of metals such as gold, silver, copper, lead, and zinc, and reducing resource waste.
[0013] 2. The primary cleaning equipment of this utility model performs a first cleaning on the rough concentrate obtained from the roughing process, further increasing the content of the target mineral in the concentrate. The secondary cleaning equipment further purifies the concentrate obtained from the primary cleaning to obtain a high-grade final concentrate. Through two cleaning processes, the grade of the concentrate can be significantly improved, meeting the market demand for high-quality concentrate. Attached Figure Description
[0014] Figure 1 This is a block diagram illustrating the system principle of this utility model; Figure 2 This is a block diagram illustrating the principle of the coarse selection unit and the fine selection unit of this utility model; Figure 3 This is a block diagram illustrating the principle of the metal recycling unit and tailings treatment unit of this utility model. Figure 4 This is a block diagram illustrating the principle of the crushing unit and screening module of this utility model. Detailed Implementation
[0015] Please see Figures 1-4A mineral processing system for complex polymetallic gold concentrate includes a crushing unit, a ball milling unit connected to the discharge port of the crushing unit, a screening module connected to the discharge port of the ball milling unit, a roughing unit connected to the discharge port of the screening module, a cleaning unit connected to one side of the roughing unit, a tailings treatment unit connected to one side of the cleaning unit, a metal recovery unit connected to one side of the tailings treatment unit, and a reagent addition unit connected to one side of each of the roughing unit, cleaning unit, and tailings treatment unit. The system comprises a crushing unit, a ball milling unit, a screening module, a roughing unit, a cleaning unit, a tailings treatment unit, and a metal recovery unit. The collection unit and reagent addition unit work closely together in all stages from crushing, ball milling, screening to roughing, cleaning, and tailings treatment. This allows for the full dissociation and recovery of various valuable metals from complex polymetallic gold concentrates. In the roughing unit, the addition of appropriate reagents achieves the initial enrichment of gold-bearing minerals and other valuable metal minerals. The cleaning unit further purifies the rough concentrate, improving its grade. The tailings treatment unit reprocesses the tailings, effectively recovering the remaining valuable metals and significantly improving the overall recovery rate of metals such as gold, silver, copper, lead, and zinc, while reducing resource waste.
[0016] Please see Figure 1 The discharge port of the screening module is connected to a material return conveying module, and the discharge port of the material return conveying module is connected to the feed port of the ball mill unit. When material with a particle size that does not meet the requirements appears after screening, it can be sent back to the ball mill unit for re-grinding through the material return conveying module. This can ensure that the particle size of the material entering the subsequent mineral processing unit is uniform and appropriate, improve grinding efficiency, and ensure the stability and mineral processing indicators of subsequent mineral processing operations.
[0017] Please see Figure 2 The roughing unit includes a flotation machine and an aeration module, while the cleaning unit includes a primary cleaning device, a secondary cleaning device, and a middlings return device. The flotation machine provides a stable environment for the flotation of valuable metallic minerals, while the aeration module can introduce an appropriate amount of air into the flotation machine to generate bubbles. These bubbles come into full contact with the mineral particles, causing the target minerals to adhere to the bubbles and float to the surface. This achieves the initial separation of gold-bearing minerals and other valuable metallic minerals from gangue minerals, improving the roughing effect. The primary cleaning device performs a first cleaning of the rough concentrate obtained from the roughing process, further increasing the content of the target minerals in the concentrate. The secondary cleaning device further purifies the concentrate obtained from the primary cleaning process, obtaining a high-grade final concentrate. Through these two cleaning processes, the grade of the concentrate can be significantly improved, meeting the market demand for high-quality concentrate. Both the primary and secondary cleaning devices use flotation machines.
[0018] Please see Figure 2The reagent addition unit includes a reagent storage tank, a reagent metering pump, and a reagent mixer. The reagent storage tank can safely and stably store various mineral processing reagents. The reagent metering pump can precisely control the amount of reagent added, accurately delivering the reagent to the designated location according to the requirements of different stages in the mineral processing process and different ore properties. The reagent mixer can fully mix multiple reagents evenly, ensuring that the reagents achieve the best effect in the mineral processing process. Precise reagent addition helps to improve the selectivity and efficiency of mineral processing, reduce reagent waste, and lower production costs.
[0019] Please see Figure 3 The tailings treatment unit includes tailings thickening equipment, tailings regrinding equipment, and tailings re-selection equipment. The metal recovery unit includes cyanide leaching equipment, zinc powder replacement equipment, and electrolysis equipment. The tailings thickening equipment first thickens the tailings to reduce their water content, thereby reducing the cost and difficulty of subsequent processing. The tailings regrinding equipment regrinds the thickened tailings to further dissociate the remaining valuable metal minerals. The tailings re-selection equipment re-selects the regrinded tailings using appropriate beneficiation methods to recover residual gold, silver, copper, lead, and other minerals from the tailings. Zinc is a valuable metal, and this process fully taps into the resource value of tailings, improving the comprehensive utilization rate of resources. The cyanide leaching equipment mixes high-grade gold concentrate with sodium cyanide solution, allowing the gold to dissolve into the solution. The zinc powder replacement equipment adds zinc powder to the leached solution to replace the gold in the solution, resulting in gold mud. The electrolysis equipment then electrolytically refines the gold mud to obtain pure gold. For other metal concentrates, appropriate extraction methods can be adopted according to their properties. This multi-step metal recovery process can efficiently and accurately extract pure metals, increasing the added value of the products.
[0020] Please see Figure 4 The crushing unit includes a jaw crusher and a cone crusher. The discharge port of the jaw crusher is connected to the feed port of the cone crusher. The jaw crusher can crush large pieces of complex polymetallic gold concentrate into smaller particles. The cone crusher can further crush the material after the jaw crusher to obtain finer ore. The multi-stage crushing method can meet the particle size requirements of the ball mill unit, improve grinding efficiency, and provide good conditions for subsequent mineral processing operations.
[0021] In operation, large chunks of complex polymetallic gold concentrate are fed into a jaw crusher for initial crushing, breaking the large ore into smaller particles. The crushed material then enters a cone crusher through the discharge port for further medium and fine crushing, resulting in even finer ore particles. The crushed ore is then conveyed into a ball mill unit for grinding, which fully liberates the various valuable metal minerals from the gangue minerals. The material after grinding in the ball mill unit enters a screening module for particle size classification. Qualified material passes through the screen and enters the subsequent coarsening unit. Material that does not meet the particle size requirements is returned to the ball mill unit for re-grinding via a material return conveying module, ensuring that the material entering the subsequent beneficiation unit has a uniform and suitable particle size. The reagent mixer mixes the reagents and adds them to the flotation machine, which provides a stable environment for the flotation of valuable metal minerals. The aeration module fills the flotation machine with air, generating a sufficient number of bubbles. The bubbles come into full contact with the mineral particles, causing the gold-bearing minerals and other valuable metal minerals to adhere to the bubbles and float to the surface, while the gangue minerals remain in the pulp. This achieves the initial separation of the gold-bearing minerals and other valuable metal minerals from the gangue minerals, yielding rough concentrate and tailings. The rough concentrate obtained from the roughing process enters the primary cleaning equipment, where reagents are added again to cause the target minerals to adhere to the bubbles and float to the surface, while the impurity minerals are suppressed and remain in the pulp. The concentrate obtained from the primary cleaning process enters the secondary cleaning equipment for further purification, further improving the grade of the concentrate and obtaining a high-grade final concentrate. The middlings generated during the cleaning process are returned to a suitable location for reprocessing through the middlings return device. Tailings from the roughing unit enter the tailings thickening equipment in the tailings treatment unit to thicken the tailings and reduce their water content. The thickened tailings then enter the tailings regrinding equipment, where they are regrinded to further dissociate the remaining valuable metal minerals. The regrinded tailings then enter the tailings re-selection equipment, where flotation is used to re-select the tailings and recover the remaining gold, silver, copper, lead, and zinc valuable metals. In the cyanide leaching equipment, high-grade gold concentrate is mixed with sodium cyanide solution to dissolve the gold into the solution. The leached solution then enters the zinc powder displacement equipment, where zinc powder is added to the solution. The zinc powder reacts with the gold in the solution to displace the gold, resulting in gold mud. The gold mud then enters the electrolysis equipment for electrolytic refining. Through the electrolysis process, impurities in the gold mud are removed to obtain pure gold.
[0022] In summary, this mineral processing system for complex polymetallic gold concentrate solves the problems of traditional mineral processing equipment, such as difficulty in selectively separating various metals, low metal recovery rate, and inadequate tailings treatment, by setting up crushing unit, ball milling unit, screening module, roughing unit, cleaning unit, tailings treatment unit, metal recovery unit, and reagent addition unit.
Claims
1. A mineral processing system for complex polymetallic gold concentrate, comprising a crushing unit, characterized in that: The discharge port of the crushing unit is connected to a ball mill unit, the discharge port of the ball mill unit is connected to a screening module, the discharge port of the screening module is connected to a roughing unit, one side of the roughing unit is connected to a cleaning unit, one side of the cleaning unit is connected to a tailings treatment unit, one side of the tailings treatment unit is connected to a metal recovery unit, and one side of the roughing unit, the cleaning unit, and the tailings treatment unit are all connected to a reagent addition unit.
2. The mineral processing system for complex polymetallic gold concentrate according to claim 1, characterized in that: The discharge port of the screening module is connected to a material return conveying module, and the discharge port of the material return conveying module is connected to the feed port of the ball mill unit.
3. The mineral processing system for complex polymetallic gold concentrate according to claim 1, characterized in that: The roughing unit includes a flotation machine and an aeration module, and the cleaning unit includes a primary cleaning device, a secondary cleaning device, and a middlings return device.
4. The mineral processing system for complex polymetallic gold concentrate according to claim 1, characterized in that: The drug addition unit includes a drug storage tank, a drug metering pump, and a drug mixer.
5. A mineral processing system for complex polymetallic gold concentrate according to claim 1, characterized in that: The tailings treatment unit includes tailings concentration equipment, tailings regrinding equipment, and tailings re-selection equipment; the metal recovery unit includes cyanide leaching equipment, zinc powder replacement equipment, and electrolysis equipment.
6. The mineral processing system for complex polymetallic gold concentrate according to claim 1, characterized in that: The crushing unit includes a jaw crusher and a cone crusher, with the discharge port of the jaw crusher connected to the feed port of the cone crusher.