An automatic sampling device for flotation cell slurry

Abstract

This utility model relates to an automatic sampling device for flotation cell slurry, solving the problems of traditional sampling methods that require repeated sampling, are cumbersome to operate, and have low sampling efficiency. It includes a sampling box, a sampling handle, and a suction pipe. The sampling box has a movable cover on top; the upper half of the sampling box is equipped with grids at certain intervals and angles to allow the slurry to enter the sampling spoon from the side along the gaps between the blades; the lower half of the sampling box has intact side walls without openings; the bottom of the sampling box is inclined at a certain angle to the horizontal plane, and a tubular discharge hole is provided at the lowest point of the sampling box. The lower end of the sampling handle is connected to the sampling box, and the sampling handle is engraved with scales to determine the sampling depth. The suction pipe is connected at one end to the discharge hole at the bottom of the sampling box, and the other end is equipped with a pipe switch. This utility model provides accurate and representative sampling; it has a high degree of automation and high sampling efficiency; the device has a simple structure and is easy to operate.

Description

Technical Field

[0001] This utility model relates to an automatic sampling device for flotation cell slurry, belonging to the technical field of mineral processing equipment. Background Technology

[0002] Mineral processing is a crucial step in the development and utilization of mineral resources. It primarily refers to the process of extracting valuable minerals from ore and removing impurities, with flotation being the most commonly used method. In flotation operations at a mineral processing plant, in addition to regularly sampling and analyzing the raw ore pulp, concentrate pulp, and tailings pulp, the intermediate products from the flotation cell and tundish also need to be regularly sampled and monitored to provide guidance for controlling the entire flotation process. Before flotation, to ensure the flotation effect, a large amount of collectors and frothers, along with other surfactants, are added to the pulp. After the pulp enters the flotation cell and is aerated and stirred, valuable minerals rise from the bottom, forming a certain thickness of mineralized froth on the surface of the flotation cell. This froth has a high metal grade, leading to significant variations in the mineral composition of the pulp at different depths and positions within the flotation cell.

[0003] Currently, most concentrators still use traditional sampling methods when taking samples of slurry from flotation cells and intermediate tanks. This involves vertically inserting an open sampling spoon into the slurry to scoop up a small sample. This method results in the spoon collecting a large amount of foam during its descent and retraction, leading to inflated test results that do not accurately reflect the true flotation process. Furthermore, to ensure sample representativeness, multiple sampling attempts are often required, making the process cumbersome and inefficient. Utility Model Content

[0004] To address the aforementioned problems, this invention provides an automatic sampling device for flotation cell slurry, which improves sampling efficiency and accuracy.

[0005] This utility model provides the following technical solution:

[0006] An automatic sampling device for flotation cell slurry includes a sampling box, a sampling handle, and a suction pipe. The sampling box has a movable cover on top. The upper half of the sampling box is equipped with grids at certain intervals and angles to allow the slurry to enter the sampling spoon from the side along the gaps between the blades. The lower half of the sampling box has intact side walls without openings. The bottom of the sampling box is inclined at a certain angle to the horizontal plane, and a tubular discharge hole is provided at the lowest point of the sampling box. The lower end of the sampling handle is connected to the sampling box, and the sampling handle is engraved with graduations to determine the sampling depth. One end of the suction pipe is connected to the discharge hole at the bottom of the sampling box, and the other end is equipped with a pipe switch.

[0007] Preferably, the sampling box and sampling handle are made of stainless steel.

[0008] Preferably, the suction pipe is a flexible tube, which can be made of rubber or plastic.

[0009] Preferably, the sampling box cover and the sampling box body are connected by a hinge.

[0010] Preferably, the suction tube is fitted onto the discharge hole at the bottom of the sampling box and connected or fixedly connected by a pipe clip.

[0011] More preferably, the sampling handle has an arc-shaped hook at the end, which can be hung on a railing or fixed bracket when sampling for a long time.

[0012] The beneficial effects of this utility model are:

[0013] 1. Accurate and representative sampling. Compared with traditional slurry sampling spoons, this invention can avoid the influence of surface mineralization foam on the sample. At the same time, by changing the position and height of the sampling box, samples can be continuously collected from different parts of the flotation cell, which greatly improves the representativeness of the sample.

[0014] 2. High degree of automation and high sampling efficiency. Compared with traditional sampling methods, which require repeated sampling to ensure sample representativeness, this invention controls the start and stop of sampling by controlling the switch at the tail of the suction pipe, and achieves sampling at multiple points in the flotation cell by moving the sampling box position.

[0015] 3. The device has a simple structure and is easy to operate. The main body of the collection device uses simple and readily available materials, requires no power drive, and requires minimal investment, resulting in low cost. It can automatically collect samples continuously for extended periods, reducing the labor intensity of on-site operators. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram illustrating the working principle of this utility model;

[0018] In the diagram, 1 is the sampling box; 2 is the sampling box cover; 3 is the sampling handle; 4 is the suction pipe; 5 is the flotation cell; and 6 is the sample collection bucket. Detailed Implementation

[0019] To make the objectives, contents, and advantages of this utility model clearer, the embodiments of the technical solution of this utility model will be described in detail below with reference to the accompanying drawings.

[0020] This utility model proposes an automatic sampling device for slurry in flotation cells or intermediate boxes, comprising a sampling box 1; a sampling box cover 2; a sampling handle 3; and a slurry suction pipe 4.

[0021] See Figure 1The bottom of sampling box 1 is tilted at a certain angle, and a tubular discharge hole is provided at the lowest point of the bottom. After the slurry collects at the lowest point, it is discharged from the discharge hole. The upper part of sampling box 1 consists of a ring of grids. During sampling, the slurry enters the sampling box 1 from all sides along the gaps in the grids, ensuring the representativeness of the sample. The top of sampling box 1 is equipped with a cover plate 2 to prevent surface foam from entering the sampling box. Sampling box 1 and cover plate 2 are connected by hinges so that cover plate 2 can move.

[0022] Still Figure 1 The lower end of the sampling handle 3 is welded to the side of the sampling box 1. The sampling handle 3 has scales engraved on its body so that the sampling depth can be observed during sampling. The tail of the sampling handle 3 has an arc hook so that the operator can hold it or fix it in a certain position.

[0023] Still Figure 1 The suction pipe 4 is fitted onto the discharge hole at the bottom of the sampling box 1. It can be connected by pipe clips or fixed. The tail of the suction pipe 4 is equipped with a pipe switch to control the start and stop of sampling.

[0024] The usage process of this utility model is as follows:

[0025] See Figure 2 In operation, first close the valve on suction pipe 4, then lower most of the pipe vertically below the flotation platform, ensuring the valve is at the bottom of flotation cell 5 or the lower platform. After completing this, open the sampling box cover and inject clean water or slurry until the entire suction pipe 4 is full, then close the cover. At this point, insert sampling box 1 into the slurry and simultaneously open the valve on suction pipe 4. Under siphon action, the clean water or slurry in sampling box 1 is drawn out. When sampling box 1 falls below the slurry surface, the slurry in flotation cell 5 continuously flows into sampling box 1 through the grid gaps and is discharged through the outlet. When the sampling box reaches the appropriate position and a period of time is allowed, place the sample collection bucket 6 below the outlet of suction pipe 4. Sampling begins; after sampling, close the valve on suction pipe 4 to stop sampling.

[0026] During the sampling process, provided that the horizontal height of sampling box 1 is higher than the height of the suction pipe 4, the height and position of the sampling box can be raised or lowered at will, thereby enabling sampling at multiple points in the flotation cell and ensuring the representativeness of the samples.

[0027] After sampling is completed, the sampling handle 2 is fixed in a specific position by hooking at the end. When sampling again, simply turn on the pipeline switch to start the next sampling cycle.

Claims

1. A device for automatic sampling of a pulp in a flotation cell, characterized in that The device includes a sampling box, a sampling handle, and a suction pipe. The sampling box has a movable cover on top. The upper half of the sampling box is equipped with grids at certain intervals and angles. The lower half of the sampling box has intact side walls without openings. The bottom of the sampling box is inclined at a certain angle to the horizontal plane, and a tubular discharge hole is provided at the lowest point of the sampling box. The lower end of the sampling handle is connected to the sampling box, and the sampling handle is engraved with scales. One end of the suction pipe is connected to the discharge hole at the bottom of the sampling box, and the other end is equipped with a pipe switch.

2. A device for automatic sampling of mineral pulp in a flotation cell according to claim 1, characterized in that The sampling box and sampling handle are made of stainless steel.

3. A device for automatic sampling of mineral pulp in a flotation cell according to claim 1, characterized in that The suction pipe is a flexible tube made of rubber or plastic.

4. A device for automatic sampling of mineral pulp in a flotation cell according to claim 1, characterized in that The sampling box cover and the sampling box body are connected by a hinge.

5. A device for automatic sampling of mineral pulp in a flotation cell according to claim 1, characterized in that The suction tube is fitted onto the discharge hole at the bottom of the sampling box and connected or fixedly connected by a pipe clip.

6. A device for automatic sampling of mineral pulp in a flotation cell according to claim 1, characterized in that The sampling handle has an arc-shaped hook at the end.

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