Variable-flow process system for copper-sulfur separation

Abstract

The invention belongs to the technical field of mineral separation, and relates to a copper-sulfur separation variable flow process system which comprises a copper roughing process, a copper concentration process, a copper scavenging process, copper concentrate collection and sulfur concentrate collection. Low-grade copper concentrate and sulfur-containing tailings are obtained through the copper roughing process, the low-grade copper concentrate is subjected to the copper concentration process, and the sulfur-containing tailings are subjected to the copper scavenging process; a variable flow path pipeline is further arranged, and the copper concentration process comprises primary copper concentration, secondary copper concentration and tertiary copper concentration; the copper concentration process can be set into three different processes through the variable flow pipeline, wherein the first process is that copper concentration is carried out only once; the second method comprises the following steps: firstly carrying out secondary copper concentration and then carrying out tertiary copper concentration; and the third method comprises the following steps: firstly carrying out primary copper concentration, then carrying out secondary copper concentration and finally carrying out tertiary copper concentration. By adopting the process system, the copper-sulfur separation process system can flexibly cope with different ore properties and grade changes, the recovery rate of copper and sulfur is improved, and the production cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of ore dressing, and in particular to a variable process technology system for copper-sulfur separation. Background Art

[0002] Due to the changeable nature of the ore, the copper-containing high-sulfur magnetite beneficiation process adopts the "magnetic first, then flotation" process, that is, first "magnetic separation" (the ore is first crushed and ground to fully dissociate the minerals, and then the magnetic minerals are separated by a magnetic separator), and then "flotation" (in the flotation process, various flotation agents are added to separate the target minerals from the gangue minerals; the target minerals attach to the bubbles and float to the surface of the pulp to form a foam layer, which is then scraped out to become concentrates, while the gangue remains in the pulp and is discharged as tailings). Among them, the "flotation" process conventionally adopts copper-sulfur "mixed flotation" and "concentrate regrinding", and finally the "copper-sulfur separation" process. "Copper-sulfur separation" is an important link in the field of copper-sulfur ore beneficiation technology, which includes two main steps: "roughing" and "fine selection". "Roughing" is the primary stage of the copper-sulfur separation process, and its purpose is to preliminarily separate minerals containing copper and sulfur from the original ore. "Selection" is a process of further purification based on "rough selection". The rough concentrate will undergo more detailed flotation in the selection stage to further improve the grade of the copper concentrate.

[0003] Due to the fluctuation and change of the grade of the raw ore entering the flotation process, higher adaptability requirements are put forward for the ore dressing process. For example, when the copper grade of the raw ore entering the flotation process is low (0.05% to 0.1%), after the "mixed flotation" and "concentrate regrinding" processes, it is difficult to select the copper concentrate grade to more than 18% by using copper-sulfur separation for one "rough selection" and two "concentration" processes, and it is necessary to add the "concentration" process to effectively improve the grade of the copper concentrate; but when the copper grade of the raw ore entering the flotation process is high (0.15% to 0.2%), due to the better copper selection effect, the copper-sulfur separation can reach a grade of 18% after "one concentration", without the need to continue the "secondary concentration" and "tertiary concentration" operations.

[0004] The existing technology is to first design and implement a process system including different times of "roughing" and "fine selection" according to the grade of the current raw ore entering the flotation process to meet the grade requirements of the copper concentrate. In the future, when the grade of the raw ore entering the flotation process fluctuates during the operation, because the designed and implemented production process cannot be adjusted or changed, the only way is to adjust the scraping amount, reagent dosage, and lime dosage of the flotation equipment to try to adapt to the raw ore entering the flotation process of different grades; however, due to the limited adjustment range of the scraping amount, reagent dosage, and lime dosage, the entire production process cannot be adjusted or changed, and cannot effectively adapt to the problem of grade fluctuations of the raw ore entering the flotation process. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a variable process system for copper-sulfur separation, which solves the problem that although the process system in the prior art can adapt to different grades of floating ores as much as possible by adjusting the scraping amount, reagent dosage and lime dosage of the flotation equipment, it is unable to adjust or change the entire production process and cannot effectively adapt to the impact of ore grade fluctuations on copper concentrate indicators.

[0006] In order to solve the above technical problems, the present invention provides the following core technical solutions: a copper-sulfur separation variable process system, including a copper roughing process, a copper concentrating process, a copper scavenging process, copper concentrate collection and sulfur concentrate collection; the copper roughing process obtains low-grade copper concentrate and sulfur-containing tailings, the low-grade copper concentrate is subjected to a copper concentrating process, and the sulfur-containing tailings are subjected to a copper scavenging process; the copper concentrating process further obtains high-grade copper concentrate and concentrating tailings, the high-grade copper concentrate is subjected to copper concentrate collection, and the concentrating tailings are continuously returned to the copper roughing process; the copper scavenging process further obtains sulfur concentrate and copper-containing tailings, the sulfur concentrate is subjected to sulfur concentrate collection, and the copper-containing tailings are continuously returned to the copper roughing process; it is characterized in that: the copper concentrating process includes copper primary concentrating, copper secondary concentrating, and copper tertiary concentrating, and the copper concentrating process can be set as three different processes:

[0007] The first type: copper is only refined once;

[0008] The second method: first conduct copper secondary concentration, and then conduct copper tertiary concentration;

[0009] The third method: first conduct copper primary selection, then conduct copper secondary selection, and finally conduct copper tertiary selection.

[0010] Furthermore, based on the above core technical solution, the copper scavenging process includes primary scavenging and secondary scavenging. The primary scavenging of copper obtains low-sulfur concentrate and copper-containing tailings; the low-sulfur concentrate continues to undergo secondary scavenging of copper, and the secondary scavenging of copper obtains sulfur concentrate and copper-containing tailings. Furthermore, the primary scavenging of copper uses 3 BF8 flotation machines, and the secondary scavenging of copper uses 5 BF8 flotation machines.

[0011] Furthermore, based on the above core technical solution, the copper roughing process uses three BF8 flotation machines.

[0012] Furthermore, based on the above core technical solution, two BF8 flotation machines are used for the first copper concentration, two BF4 flotation machines are used for the second copper concentration, and two BF4 flotation machines are used for the third copper concentration.

[0013] Furthermore, based on the above core technical solution, a variable process pipeline is also provided, and the specific setting method is as follows: pipeline 1 is provided between the copper roughing process and the copper primary concentration, pipeline 2 is provided between the copper roughing process and the copper secondary concentration; pipeline 3 is provided between the copper primary concentration and the copper secondary concentration, and pipeline 4 is provided between the copper primary concentration and the copper concentrate collection; pipeline 1, pipeline 2, pipeline 3 and pipeline 4 are all provided with valves. Furthermore, the valve is a rubber cone valve, which is used to block or open each entrance of the variable process pipeline.

[0014] Furthermore, based on the above core technical solution, the tailings from the primary copper concentration and the secondary copper concentration are returned to the copper roughing process, and the tailings from the tertiary copper concentration are returned to the secondary copper concentration.

[0015] Furthermore, based on the above core technical solution, the copper roughing process, copper primary concentration, copper secondary concentration and copper tertiary concentration are all equipped with lime adding devices for index selection of high-grade copper concentrate.

[0016] Furthermore, based on the above core technical solution, a storage barrel is provided for collecting the copper concentrate, and the high-grade copper concentrate can be directly stored in the storage barrel.

[0017] The copper-sulfur separation variable process system can flexibly adjust the process according to the ore properties and grade changes by setting different copper concentration processes (primary concentration, secondary concentration, and tertiary concentration), improve the copper concentrate grade and recovery rate, and reduce production costs. The setting of copper primary scavenging and copper secondary scavenging can improve the recovery rate and reduce the loss of useful minerals. The use of a specific number of BF8 flotation machines for copper scavenging can improve the flotation efficiency, optimize the equipment configuration, and improve the economic benefits of the overall process. The use of three BF8 flotation machines for copper roughing can improve the roughing efficiency, obtain more low-grade copper concentrate, and improve the copper recovery rate of the entire system. Through the combination of different models of flotation machines (BF8 and BF4), the system can optimize the flotation effect according to the needs of different concentration stages, improve the copper concentrate grade, and improve the use efficiency of the equipment. The variable process pipelines and valves can be set up to quickly adjust the process flow according to needs, improve the flexibility and response speed of the system, and adapt to different production needs. Using rubber cone valves to block or open process pipelines can easily control the flow direction of slurry and achieve rapid switching of process flow. At the same time, rubber cone valves have good sealing performance to prevent slurry leakage; it can further improve the recovery rate of copper, reduce resource waste, and reduce production costs. Setting up lime addition devices at each stage of concentration can accurately control the pH value, optimize flotation conditions, improve the grade and recovery rate of copper concentrate, and ensure environmental protection requirements. Setting up storage barrels to directly store high-grade copper concentrate can reduce the transportation and storage links of copper concentrate, reduce operating costs, and improve the management efficiency of copper concentrate.

[0018] In short, this technical solution can adjust or change the entire production process, effectively adapting to the problem of the impact of ore grade fluctuations on copper concentrate indicators. It enables the copper-sulfur separation process system to flexibly respond to different ore properties and grade changes, improve the recovery rate of copper and sulfur, reduce production costs, and ensure environmental friendliness and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0020] Figure 1 This is a process flow chart of the first embodiment. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Definition of terms:

[0023] "Roughing" is a key step in the mineral processing process, which is mainly used to initially separate valuable minerals from the raw ore to obtain a rough concentrate with a higher grade.

[0024] "Selection" is a key step in the mineral processing technology, which refers to the process of further purifying the rough concentrate obtained through the roughing process to obtain a higher grade concentrate product.

[0025] "Scavenging" refers to the further separation of roughing tailings after the roughing operation. The purpose of this operation is to recover more useful components from the roughing tailings and improve the metal recovery rate.

[0026] "Concentrate" refers to the mineral products containing higher grade useful minerals separated by various beneficiation methods (such as flotation, gravity separation, magnetic separation, etc.) during the beneficiation process.

[0027] "Tailings" refers to the slag containing lower-grade useful minerals remaining after sorting during the mineral processing process.

[0028] "BF4 flotation machine": is a medium-sized self-aspirating mechanical agitation flotation equipment, mainly used in the separation process of non-ferrous metals, ferrous metals and non-metallic minerals.

[0029] "BF8 flotation machine": It is a large self-aspirating mechanical agitation flotation equipment, mainly used in the separation process of non-ferrous metals, ferrous metals and non-metallic minerals. The main difference between the BF4 flotation machine and the BF8 flotation machine is their processing capacity and tank volume. The BF8 flotation machine is suitable for larger-scale mineral processing operations, while the BF4 flotation machine is suitable for medium-scale mineral processing operations. Both have the characteristics of self-aspirating mechanical agitation, which can efficiently perform mineral flotation separation.

[0030] Embodiment 1:

[0031] like Figure 1 As shown, a copper-sulfur separation variable process system includes a copper roughing process, a copper concentrating process, a copper scavenging process, copper concentrate collection and sulfur concentrate collection; the copper roughing process obtains low-grade copper concentrate and sulfur-containing tailings, the low-grade copper concentrate is subjected to a copper concentrating process, and the sulfur-containing tailings are subjected to a copper scavenging process; the copper concentrating process further obtains high-grade copper concentrate and concentrating tailings, the high-grade copper concentrate is subjected to copper concentrate collection, and the concentrating tailings are continuously returned to the copper roughing process; the copper scavenging process further obtains sulfur concentrate and copper-containing tailings, the sulfur concentrate is subjected to sulfur concentrate collection, and the copper-containing tailings are continuously returned to the copper roughing process; a variable process pipeline is also provided, the copper concentrating process includes copper primary concentrating, copper secondary concentrating and copper tertiary concentrating; the copper concentrating process can be set to three different processes through the variable process pipeline: the first: only copper primary concentrating is performed; the second: copper secondary concentrating is performed first, and then copper tertiary concentrating is performed; the third: copper primary concentrating is performed first, then copper secondary concentrating, and finally copper tertiary concentrating is performed. The entire production process can be adjusted or changed according to the ore properties and grade changes, effectively adapting to the impact of ore grade fluctuations on copper concentrate indicators, meeting the production requirements of different raw ore copper grades, and effectively ensuring that the copper concentrate grade is ≥18% and the copper recovery rate is ≥65%. At the same time, when the first or second process is adopted, the unused flotation machine can be turned off, which plays a role in energy saving and consumption reduction, and reduces production costs.

[0032] The copper scavenging process includes copper primary scavenging and copper secondary scavenging. The copper primary scavenging obtains low-sulfur concentrate and copper-containing tailings; the low-sulfur concentrate continues to undergo copper secondary scavenging, and the copper secondary scavenging obtains sulfur concentrate and copper-containing tailings. The copper primary scavenging uses 3 BF8 flotation machines, and the copper secondary scavenging uses 5 BF8 flotation machines, which can improve the flotation efficiency, optimize the equipment configuration, and improve the economic benefits of the overall process. The copper roughing process uses 3 BF8 flotation machines. It can improve the roughing efficiency, obtain more low-grade copper concentrate, and improve the copper recovery rate of the entire system. The copper primary concentration uses 2 BF8 flotation machines, the copper secondary concentration uses 2 BF4 flotation machines, and the copper tertiary concentration uses 2 BF4 flotation machines. Through the combination of different models of flotation machines (BF8 and BF4), the system can optimize the flotation effect according to the needs of different concentration stages, improve the grade of copper concentrate, and improve the efficiency of equipment use.

[0033] The specific setting of the variable process pipeline is as follows: Pipeline 1 is set between the copper roughing process and the copper primary concentration, and Pipeline 2 is set between the copper roughing process and the copper secondary concentration; Pipeline 3 is set between the copper primary concentration and the copper secondary concentration, and Pipeline 4 is set between the copper primary concentration and the copper concentrate collection; Pipeline 1, Pipeline 2, Pipeline 3 and Pipeline 4 are all equipped with valves. The process flow can be quickly adjusted as needed to improve the flexibility and response speed of the system and adapt to different production needs.

[0034] The tailings from the primary copper concentration and the secondary copper concentration are returned to the copper roughing process, and the tailings from the tertiary copper concentration are returned to the secondary copper concentration. This can further improve the copper recovery rate, reduce resource waste, and reduce production costs.

[0035] Table 1 shows the sorting indexes completed by the first process, Table 2 shows the sorting indexes completed by the first process, and Table 3 shows the sorting indexes completed by the first process.

[0036] Table 1:

[0037]

[0038] Table 2:

[0039]

[0040] Table 3:

[0041]

[0042] This embodiment can adjust or change the entire production process flow, effectively adapting to the problem of the impact of ore grade fluctuations on copper concentrate indicators. The copper-sulfur separation process system can flexibly respond to different ore properties and grade changes, improve the recovery rate of copper and sulfur, reduce production costs, and ensure environmental friendliness and economic benefits.

[0043] Embodiment 2:

[0044] This embodiment is based on the first embodiment, the valve is a rubber cone valve, a lime replenishing device is provided, and a storage bucket is also provided; the details are as follows:

[0045] A copper-sulfur separation variable process system comprises a copper roughing process, a copper concentrating process, a copper scavenging process, copper concentrate collection and sulfur concentrate collection; the copper roughing process obtains low-grade copper concentrate and sulfur-containing tailings, the low-grade copper concentrate is subjected to a copper concentrating process, and the sulfur-containing tailings are subjected to a copper scavenging process; the copper concentrating process further obtains high-grade copper concentrate and concentrating tailings, the high-grade copper concentrate is subjected to copper concentrate collection, and the concentrating tailings are continuously returned to the copper roughing process; the copper scavenging process further obtains sulfur concentrate and copper-containing tailings, the sulfur concentrate is subjected to sulfur concentrate collection, and the copper-containing tailings are continuously returned to the copper roughing process; a variable process pipeline is also provided, the copper concentrating process comprises copper primary concentrating, copper secondary concentrating and copper tertiary concentrating; the copper concentrating process can be set to three different processes through the variable process pipeline: the first type: only copper primary concentrating is performed; the second type: copper secondary concentrating is performed first, and then copper tertiary concentrating is performed; the third type: copper primary concentrating is performed first, then copper secondary concentrating is performed, and finally copper tertiary concentrating is performed. The entire production process can be adjusted or changed according to the ore properties and grade changes, effectively adapting to the impact of ore grade fluctuations on copper concentrate indicators, meeting the production requirements of different raw ore copper grades, and effectively ensuring that the copper concentrate grade is ≥18% and the copper recovery rate is ≥65%. At the same time, when the first or second process is adopted, the unused flotation machine can be turned off, which plays a role in energy saving and consumption reduction, and reduces production costs.

[0046] The copper scavenging process includes copper primary scavenging and copper secondary scavenging. The copper primary scavenging obtains low-sulfur concentrate and copper-containing tailings; the low-sulfur concentrate continues to undergo copper secondary scavenging, and the copper secondary scavenging obtains sulfur concentrate and copper-containing tailings. The copper primary scavenging uses 3 BF8 flotation machines, and the copper secondary scavenging uses 5 BF8 flotation machines, which can improve the flotation efficiency, optimize the equipment configuration, and improve the economic benefits of the overall process. The copper roughing process uses 3 BF8 flotation machines. It can improve the roughing efficiency, obtain more low-grade copper concentrate, and improve the copper recovery rate of the entire system. The copper primary concentration uses 2 BF8 flotation machines, the copper secondary concentration uses 2 BF4 flotation machines, and the copper tertiary concentration uses 2 BF4 flotation machines. Through the combination of different models of flotation machines (BF8 and BF4), the system can optimize the flotation effect according to the needs of different concentration stages, improve the grade of copper concentrate, and improve the efficiency of equipment use.

[0047] The specific setting method of the variable process pipeline is: Pipeline 1 is set between the copper roughing process and the copper primary concentration, and Pipeline 2 is set between the copper roughing process and the copper secondary concentration; Pipeline 3 is set between the copper primary concentration and the copper secondary concentration, and Pipeline 4 is set between the copper primary concentration and the copper concentrate collection; Pipeline 1, Pipeline 2, Pipeline 3 and Pipeline 4 are all equipped with valves. The process flow can be quickly adjusted as needed to improve the flexibility and response speed of the system to adapt to different production needs. The valve is a rubber cone valve, which is used to block or open the various inlets of the variable process pipeline. It can easily control the flow direction of the slurry and realize the rapid switching of the process flow. At the same time, the rubber cone valve has good sealing performance to prevent slurry leakage.

[0048] The tailings from the primary copper concentration and the secondary copper concentration are returned to the copper roughing process, and the tailings from the tertiary copper concentration are returned to the secondary copper concentration. This can further improve the copper recovery rate, reduce resource waste, and reduce production costs.

[0049] The copper roughing process, copper primary concentration, copper secondary concentration and copper tertiary concentration are all equipped with lime adding devices for index selection of high-grade copper concentrate. Setting up lime adding devices at each concentration stage can accurately control the pH value, optimize flotation conditions, improve the grade and recovery rate of copper concentrate, and ensure environmental protection requirements.

[0050] Copper concentrate collection is equipped with storage barrels, and high-grade copper concentrate can be directly stored in the storage barrels. Setting up storage barrels to directly store high-grade copper concentrate can reduce the transportation and storage links of copper concentrate, reduce operating costs, and improve the management efficiency of copper concentrate.

[0051] This embodiment can adjust or change the entire production process flow, effectively adapting to the problem of the impact of ore grade fluctuations on copper concentrate indicators. The copper-sulfur separation process system can flexibly respond to different ore properties and grade changes, improve the recovery rate of copper and sulfur, reduce production costs, and ensure environmental friendliness and economic benefits.

[0052] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A copper-sulfur separation variable process system, comprising a copper roughing process, a copper concentrating process, a copper scavenging process, copper concentrate collection and sulfur concentrate collection; the copper roughing process obtains low-grade copper concentrate and sulfur-containing tailings, the low-grade copper concentrate is subjected to the copper concentrating process, and the sulfur-containing tailings are subjected to the copper scavenging process; the copper concentrating process further obtains high-grade copper concentrate and concentrating tailings, the high-grade copper concentrate is subjected to the copper concentrate collection, and the concentrating tailings are continuously returned to the copper roughing process; the copper scavenging process further obtains sulfur concentrate and copper-containing tailings, the sulfur concentrate is subjected to the sulfur concentrate collection, and the copper-containing tailings are continuously returned to the copper roughing process; it is characterized in that: The copper concentration process includes copper primary concentration, copper secondary concentration, and copper tertiary concentration. The copper concentration process can be set to three different processes: The first method is to only carry out the copper concentration once; The second method is to first perform the copper secondary concentration, and then perform the copper tertiary concentration; The third method is to firstly carry out the copper primary concentration, then carry out the copper secondary concentration, and finally carry out the copper tertiary concentration.

2. A copper-sulfur separation variable process system according to claim 1, characterized in that: The copper scavenging process includes primary copper scavenging and secondary copper scavenging, wherein the primary copper scavenging obtains low-sulfur concentrate and copper-containing tailings; the low-sulfur concentrate is further subjected to the secondary copper scavenging, wherein the secondary copper scavenging obtains sulfur concentrate and copper-containing tailings.

3. A copper-sulfur separation variable process system according to claim 2, characterized in that: The copper primary scavenging adopts 3 BF8 flotation machines, and the copper secondary scavenging adopts 5 BF8 flotation machines.

4. A copper-sulfur separation variable process system according to claim 1, characterized in that: The copper roughing process uses three BF8 flotation machines.

5. The copper-sulfur separation variable process system according to claim 1 is characterized in that: The copper primary concentration uses two BF8 flotation machines, the copper secondary concentration uses two BF4 flotation machines, and the copper tertiary concentration uses two BF4 flotation machines.

6. A copper-sulfur separation variable process system according to claim 1, characterized in that: A variable process pipeline is also provided, and the specific setting method is as follows: pipeline one is provided between the copper roughing process and the copper primary concentration, pipeline two is provided between the copper roughing process and the copper secondary concentration; pipeline three is provided between the copper primary concentration and the copper secondary concentration, and pipeline four is provided between the copper primary concentration and the copper concentrate collection; pipeline one, pipeline two, pipeline three and pipeline four are all provided with valves.

7. A copper-sulfur separation variable process system according to claim 6, characterized in that: The valve is a rubber cone valve, which is used to block or open each inlet of the variable flow pipeline.

8. The copper-sulfur separation variable process system according to claim 1 is characterized by: The tailings from the primary copper concentration and the secondary copper concentration are returned to the copper roughing process, and the tailings from the tertiary copper concentration are returned to the secondary copper concentration.

9. The copper-sulfur separation variable process system according to claim 1 is characterized by: The copper roughing process, the copper primary concentration, the copper secondary concentration and the copper tertiary concentration are all provided with lime supplementing devices for selecting the indexes of the high-grade copper concentrate.

10. The copper-sulfur separation variable process system according to claim 1, characterized in that: The copper concentrate is collected and provided with a storage barrel, and the high-grade copper concentrate can be directly stored in the storage barrel.

Images