A switchable tailings return water and tailings conveying structure

Abstract

The utility model relates to a switchable tailings return water and tailings conveying structure, which solves the current problem that pipeline construction, operation and maintenance costs and safety factors cannot be achieved at the same time. Three pipelines are constructed, two of which adopt steel skeleton structure pipelines with high cost but wear-resistant and pressure-resistant, and the third adopts HDPE pipelines with low cost. Under normal circumstances, the two steel skeleton structure pipelines are used as tailings conveying pipelines and 1# tailings return water pipelines respectively, and the HDPE pipeline is used as 2# tailings return water pipeline. Gate valves are installed at both ends of the tailings conveying pipeline and the 1# tailings return water pipeline, as well as between the tailings conveying pipeline and the 1# tailings return water pipeline, to form a switchable gate valve switching unit; when a fault such as a break occurs at a certain point in the tailings conveying pipeline, the 1# tailings return water pipeline can be switched to an emergency tailings conveying pipeline by switching the opening and closing of the gate valve switching unit. The present invention optimizes by changing the pipeline layout, the number of constructions, the material selection, etc., taking into account safety and cost.

Description

Technical Field

[0001] The utility model belongs to the field of tailings transportation and tailings water return in hydrometallurgical mines, and in particular relates to a switchable tailings water return and tailings transportation structure. Background Art

[0002] Tailings transportation and tailings return water are key production processes in hydrometallurgical mines. Whether they are normal or not has a significant impact on the system water balance and continuous and stable production. In general, in order to improve the safety factor, a double-circuit layout is adopted, that is, two tailings transportation pipelines and two tailings return water pipelines are built, for a total of four pipelines. The advantage is that the safety factor is high, and any failure of any pipeline will not cause the metallurgical production to stop. The disadvantage is that the construction investment and operation and maintenance costs increase exponentially.

[0003] The Chinese patent "A material switching process for long-distance pipeline transportation shared by multiple materials (CN115325456A)" also involves a switching process, but it (1) belongs to the field of oil transportation technology; (2) it only improves the pipeline utilization rate and reduces the construction cost to a certain extent, but does not consider pipeline backup and cannot ensure a sufficient safety factor; (3) the switching of materials transported in the pipeline is achieved through pipeline switchers and pipeline isolators, which is essentially an optimization work on both sides of the transportation pipeline, and does not change the layout and construction of the transportation pipeline itself. Utility Model Content

[0004] The utility model solves the problem that the current structural pipeline construction, operation and maintenance cost and safety factor cannot be achieved at the same time by providing a switchable tailings return water and tailings conveying structure.

[0005] The utility model is realized by the following technical solutions:

[0006] A switchable tailings return water and tailings conveying structure comprises three pipelines, two of which are steel skeleton structure pipelines with higher cost but wear resistance and pressure resistance, and the third is HDPE pipeline with lower cost. Under normal circumstances, the two steel skeleton structure pipelines are respectively used as tailings conveying pipelines and 1# tailings return water pipeline, and the HDPE pipeline is used as 2# tailings return water pipeline. Gate valves are installed at both ends of the tailings conveying pipeline and 1# tailings return water pipeline and between the tailings conveying pipeline and 1# tailings return water pipeline to form a switchable gate valve switching unit.

[0007] The gate valves of the gate valve switching unit are arranged respectively near the beneficiation and smelting plant area and the tailings storage.

[0008] There are two gate valves installed between the tailings conveying pipeline and the 1# tailings return pipeline, which are arranged near the beneficiation plant area and the tailings storage respectively.

[0009] The gate valves of the gate valve switching unit are interlocked with each other. When any gate valve of the two gate valves between the tailings conveying pipeline and the 1# tailings return water pipeline is closed or opened, the other gate valve can be closed or opened at the same time; when any gate valve at both ends of the tailings conveying pipeline and the 1# tailings return water pipeline is closed or opened, the remaining gate valves can be closed or opened; when the two gate valves between the tailings conveying pipeline and the 1# tailings return water pipeline are closed or opened at the same time, all the gate valves at both ends of the tailings conveying pipeline and the 1# tailings return water pipeline can be opened or closed at the same time.

[0010] The present invention optimizes the pipeline layout, the number of pipelines to be built, the material selection, etc., taking into account both safety and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model. DETAILED DESCRIPTION

[0012] The utility model aims to provide a structure that can switch the tailings return pipeline to an emergency tailings conveying pipeline at any time, which can reduce the number of pipelines to be built in the double-circuit layout by one. While reducing the construction investment and operation and maintenance costs, it still ensures that the safety factor is not reduced, and the entire beneficiation system will not be shut down due to the failure of any pipeline.

[0013] The utility model adopts a single-double combination layout, that is, three pipelines are constructed, two of which are steel skeleton structure pipelines with high cost but wear-resistant and pressure-resistant, and the third is a low-cost HDPE pipeline. Under normal circumstances, the two steel skeleton structure pipelines are used as tailings conveying pipelines and 1# tailings return water pipelines, respectively, and the HDPE pipeline is used as 2# tailings return water pipeline. When a fault such as a break occurs at a certain point in the tailings return water pipeline, the 1# tailings return water pipeline can be switched to the emergency tailings conveying pipeline by switching the gate valve unit open and closed, ensuring continuous and stable production.

[0014] like Figure 1 As shown in the figure, taking a hydrometallurgical mine as an example, a total of three pipelines are built, two of which are high-cost but wear-resistant and pressure-resistant pipelines that can meet the requirements of slurry transportation, and the third is a low-cost pipeline that can only meet the requirements of tailings return water transportation. Under normal circumstances, the 2# and 5# gate valves are closed, and the 1#, 3#, 4#, and 6# gate valves are opened. The two wear-resistant and pressure-resistant pipelines are used as tailings transportation pipelines and the 1# tailings return water pipeline, and the HDPE pipeline is used as the 2# tailings return water pipeline.

[0015] If a fault occurs in one of the tailings return pipes, by closing the valves on both sides of the pipe through remote control or on-site operation and increasing the frequency or number of return pumps in the other return pipe, it can be ensured that the return water is not affected and production runs normally and stably.

[0016] If the tailings conveying pipeline fails, by closing the 1#, 3#, 4#, and 6# gate valves through remote control or on-site operation, and opening the 2# and 5# gate valves, the 1# tailings return water pipeline, which also uses wear-resistant and pressure-resistant pipes, can be switched to the emergency tailings conveying pipeline. By increasing the frequency or number of openings of the return water pump of the other return water pipeline, it can be ensured that the tailings conveying is not affected and the production runs normally and stably.

[0017] In the utility model:

[0018] 1. A total of three pipelines are built, two of which use high-cost but wear-resistant and pressure-resistant pipelines (such as steel skeleton structures, etc.), and the third uses low-cost pipelines (such as HDPE, etc.); when a break or other fault occurs at a certain point in the tailings return water pipeline, the 1# tailings return water pipeline can be switched to the emergency tailings conveying pipeline by switching the gate valve switching unit to ensure continuous and stable production.

[0019] 2. Use wear-resistant and pressure-resistant pipelines (such as steel skeleton structures, etc.) to ensure that they can withstand the transportation conditions of tailings slurry and have sufficient service life;

[0020] 3. The 1# tailings return pipe is wear-resistant and pressure-resistant to ensure that it can withstand the transportation conditions of tailings slurry when switched to the emergency tailings transportation pipe, and has a sufficient service life to leave enough time for emergency repairs;

[0021] 4. The 2# tailings return pipe uses low-cost pipes (such as HDPE, etc.), which can not only meet the transportation conditions of tailings return water, have a sufficient life, but also reduce investment.

[0022] 5. The gate valve switching units are arranged close to the smelting plant area and the tailings storage to increase the protection range of the pipeline.

[0023] 6. The gate valve switching unit can be operated by remote control or on-site manual switching.

[0024] 7. The gate valve switching units are interlocked with each other. When closing or opening gate valve 2#, gate valve 5# can be closed or opened; when closing or opening gate valve 1#, gate valves 3#, 4#, and 6# can be closed or opened; when closing or opening gate valves 2# and 5#, gate valves 1#, 3#, 4#, and 6# can be opened or closed.

Claims

1. A switchable tailings return water and tailings conveying structure, characterized by: It includes three pipelines, two of which are high-cost but wear-resistant and pressure-resistant pipelines, and the third is a low-cost pipeline. Under normal circumstances, the two high-cost but wear-resistant and pressure-resistant pipelines are used as tailings conveying pipelines and 1# tailings return pipeline respectively, and the low-cost pipeline is used as 2# tailings return pipeline. Gate valves are installed at both ends of the tailings conveying pipeline and the 1# tailings return pipeline, as well as between the tailings conveying pipeline and the 1# tailings return pipeline, to form a switchable gate valve switching unit.

2. A switchable tailings return water and tailings conveying structure according to claim 1, characterized in that: The more expensive but wear-resistant and pressure-resistant pipes are steel skeleton structures, while the less expensive pipes are HDPE pipes.

3. A switchable tailings return water and tailings conveying structure according to claim 1 or 2, characterized in that: The gate valves of the gate valve switching unit are arranged respectively near the beneficiation and smelting plant area and the tailings storage.

4. A switchable tailings return water and tailings conveying structure according to claim 1 or 2, characterized in that: There are two gate valves installed between the tailings conveying pipeline and the 1# tailings return pipeline, which are arranged near the beneficiation plant area and the tailings storage respectively.

5. A switchable tailings return water and tailings conveying structure according to claim 4, characterized in that: The gate valves of the gate valve switching unit are interlocked with each other. When any gate valve of the two gate valves between the tailings conveying pipeline and the 1# tailings return water pipeline is closed or opened, the other gate valve can be closed or opened at the same time; when any gate valve at both ends of the tailings conveying pipeline and the 1# tailings return water pipeline is closed or opened, the remaining gate valves can be closed or opened; when the two gate valves between the tailings conveying pipeline and the 1# tailings return water pipeline are closed or opened at the same time, all the gate valves at both ends of the tailings conveying pipeline and the 1# tailings return water pipeline can be opened or closed at the same time.

Images