Device for rapidly determining grade of copper-nickel sulfide ore

Abstract

The utility model belongs to the field of mine exploration and production, and particularly relates to a device for quickly determining the grade of copper-nickel sulfide ore, which is based on rock powder generated in the rock drilling process according to the mine production process and the structural characteristics of the ore structure. The grade of 140-200-mesh ore powder is analyzed through the steps of rock drilling liquid collection, centrifugal classification, drying and cake making, grinding and screening, grade determination through a handheld spectrograph analyzer and the like, and the centrifugal classification device suitable for the content of the utility model is designed according to self requirements. The ore grade determination time is greatly shortened, the problem that errors are large when a handheld spectrograph is used for analyzing mineralized non-uniform ore and star-like-sponge meteorite-like ore is solved, and mine production can be effectively guided.

Description

Technical Field

[0001] The utility model belongs to the field of mine exploration and production, and in particular relates to a device for quickly determining the ore grade of copper-nickel sulfide ore. Background Art

[0002] The purpose of ore grade in metal and non-metal mines is to guide mine production and is one of the most critical indicators for dynamic management of mine reserves. At present, mines often use chemical test methods, oxime spectrophotometry or handheld spectrometers to determine the amount of nickel. The oxime spectrophotometric method for determining the amount of nickel requires multiple steps such as sampling, crushing and testing. According to the mine production organization process, its shortest cycle is generally around 24 hours, and it is impossible to timely guide the needs of mines with 8 or 12-hour rolling shift production. Due to the ore structure and the characteristics of the handheld spectrometer itself, the grade of massive sponge meteorite iron ore cannot be directly analyzed using a handheld spectrometer.

[0003] In order to meet the needs of mines, the utility model proposes a device for quickly determining the grade of copper-nickel sulfide ore that is consistent with the production process of mines. Utility Model Content

[0004] The utility model aims to provide a device for quickly determining the grade of copper-nickel sulfide ore, so that the time for determining the grade of the mine is shortened to within 0.5-2h.

[0005] Based on the mining rock drilling and blasting production process, the utility model adopts the following technical solutions:

[0006] A device for quickly determining the grade of copper-nickel sulfide ore comprises a centrifugal grading device, the centrifugal grading device comprises a liquid collecting funnel, a shell, a motor and a centrifugal storage mechanism, the upper end of the shell is provided with a shell cover, the center of the shell cover is provided with an opening, the upper end of the shell cover opening is provided with a liquid collecting funnel, the lower end of the shell cover opening is provided with a clamp, the center of the bottom of the shell is provided with a motor, the motor is provided with a centrifugal storage mechanism, the centrifugal storage mechanism comprises a circular chassis, the chassis is mounted on the motor, the upper part of the shell is provided with a top plate, the top plate is connected to the shell cover, the chassis corresponds to the top plate, the chassis and the top plate are provided with three groups of blocks, and screens are fixed to the blocks of the corresponding groups through screen clamps.

[0007] Preferably, a splash-proof device is provided at the central entrance of the liquid collecting funnel, the splash-proof device is a hemispherical structure, and the splash-proof device is connected to the liquid collecting funnel through four short columnar steel bars.

[0008] Preferably, a drain switch is provided at the bottom of the housing.

[0009] Preferably, a shell foot is provided at the lower end of the shell.

[0010] Preferably, the upper end of the shell is connected to a shell cover via fixing bolts.

[0011] Preferably, an upper plate clamp is provided on the upper portion of the top plate, and the top plate is connected to the lower portion of the outer shell cover via the upper plate clamp and the clamp.

[0012] Preferably, the sieve includes a 10-mesh sieve, a 140-mesh sieve and a 200-mesh sieve, and the 0-mesh sieve, the 140-mesh sieve and the 200-mesh sieve are installed in sequence from inside to outside.

[0013] The utility model has the following beneficial effects:

[0014] The structure of the utility model separates the drilling fluid by arranging a motor in a shell, and then arranging upper and lower base plates through the motor, and arranging screens of different specifications between the base plates. It not only shortens the time for determining the ore grade, but also solves the problem of large errors in analyzing unevenly mineralized ores and star-shaped and sponge meteorite iron ores by a handheld spectrometer. The rock powder utilized by the utility model is the rock powder of the entire blasthole, which is more representative than the continuous fast drilling method, does not occupy production time separately compared with the grooving method, and can well avoid the influence of human factors during sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the appearance diagram of the centrifugal classification device for rock drilling fluid of the utility model;

[0016] Figure 2 This is a cross-sectional view of the centrifugal classification device for rock drilling fluid of the utility model;

[0017] In the figure: 1-1. Liquid collecting funnel, 1-2. Splash-proof device, 2-1. Casing, 2-2. Motor, 2-1-1. Casing cover, 2-1-3. Drain switch, 2-1-4. Casing foot, 2-1-5. Fixing bolt, 2-1-6. Clamp, 2-3-1. Chassis, 2-3-2. Top plate, 2-3-3. 10 mesh screen, 2-3-4. 140 mesh screen, 2-3-5. 200 screen, 2-3-6. Screen clamp, 2-3-2-1. Upper plate clamp, 2-3-2-2. Block. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0019] The utility model firstly proposes a method and a device for quickly determining the ore grade of sulfide copper-nickel ore according to the mine production process and the ore structure characteristics.

[0020] like Figure 1 and 2 The centrifugal classification device for rock drilling fluid shown in the figure consists of a collecting device and a centrifugal classification device. The collecting device consists of a liquid collecting funnel 1-1 with an upper and lower circle and a splash-proof device 1-2. The upper design of the funnel facilitates the collecting device to be close to the face and collect more rock drilling fluid; the lower circle design facilitates connection with the centrifugal classification device. The splash-proof device is hemispherical and connected to the funnel through four short columnar steel bars, which prevents a large amount of rock drilling fluid from splashing out and large pieces from falling into the equipment during centrifugation.

[0021] The centrifugal separation device is composed of a housing 2-1, a motor 2-2, and a centrifugal storage mechanism. The housing 2-1 is cylindrical in shape, and includes a housing cover 2-1-1, a drain switch 2-1-3, and a housing foot 2-1-4. The housing cover 2-1-1 is fixed to the housing 2-1-2 by means of fixing bolts 2-1-5. The housing cover 2-1-1 is hollow and circular, and a clamp 2-1-6 is provided at the bottom to fix the centrifugal storage mechanism; when in use, the drain switch 2-1-3 is kept in a normally open state to drain the water inside the housing 2-1.

[0022] The centrifugal storage mechanism is also cylindrical as a whole, and is composed of a chassis 2-3-1, a top plate 2-3-2, a 10-mesh screen 2-3-3, a 140-mesh screen 2-3-4, a 200-mesh screen 2-3-5, and a screen clamp 2-3-6. The center upper convex of the chassis 2-3-1 is mechanically connected to the motor 2-2. When working, the motor 2-2 drives the chassis 2-3-1 and then drives the centrifugal storage mechanism to rotate. The upper part of the chassis 2-3-1 is formed with three blocks for storing muddy rock powder. The top plate 2-3-2 is in the shape of a hollow circle, with a clamp 2-3-2-1 arranged on the upper part close to the inner edge, and three groups of blocks 2-3-2-2 arranged on the lower part corresponding to the blocks of the bottom plate 2-3-1. Some reinforcements can be added to the 10-mesh screen 2-3-3, the 140-mesh screen 2-3-4, and the 200-mesh screen 2-3-5 according to their strength to ensure that the screen can withstand the centrifugal force when the device is working. Example

[0023] Step 1: Use the liquid collecting funnel 1-1 to collect the drilling fluid in the drilling fluid centrifugal classification device. Since the water used for underground drilling is municipal water, the water quality can be guaranteed. The wastewater flowing out of the blasting hole during rock drilling carries a large amount of ore powder. The metal mineral content in the powder can basically represent the metal mineral content in the ore, but its particle size is uneven and cannot be used directly. The time for collecting drilling fluid is 0.1m from the start of drilling the blasthole to the end hole, and the collection hole depth is 1.5m-3m. Multiple boreholes can be collected from the same palm. In order to avoid the presence of foreign mineral powder or spraying material on the drill rod and the palm face, the drilling fluid is not collected when the opening is 0.1m.

[0024] Step 2: Use the motor 2-2 to drive the chassis 2-3-1 to rotate, and then drive the three screens of 10 mesh 2-3-3, 140 mesh 2-3-4 and 200 mesh 2-3-5 to centrifuge the drilling fluid. Use the special centrifugal classification device for drilling fluid of the utility model to centrifuge the drilling fluid to collect rock powder of 140-200 mesh, 10-1400 mesh and less than 10 mesh, among which 140-200 mesh rock powder is used for testing, 10-140 mesh rock powder is used as standby, and less than 10 mesh rock powder is discarded. This step is carried out simultaneously with the first step, and the machine is stopped at any time to observe the amount of rock powder, and the number of blastholes for collecting drilling fluid is adjusted in time.

[0025] Step 3: Drying the rock powder. Water will affect the grade of rock powder, so the rock powder that needs to be tested immediately must be dried. Take out the 140-200 mesh and 10-140 mesh rock powder from the centrifugal classification container of the drilling fluid, stir evenly, and then put the muddy rock powder into a special high-temperature resistant plastic container for drying to form a rock powder cake.

[0026] Step 4: Weighing. To ensure that the handheld spectrometer analyzes the rock powder grade data accurately, as well as the subsequent laboratory analysis and internal and external inspection sample requirements, the rock powder is weighed after drying. If it is less than 30g, proceed to step 5; if it is greater than 30g, proceed to step 6.

[0027] Step 5: Grinding and screening. Grind the 10-140 mesh rock powder, and screen out the rock powder smaller than 140 mesh, mix it with the original 140-200 mesh rock powder with water, and then dry and weigh it.

[0028] Step 6: Use a handheld spectrometer to analyze the rock powder grade. Use a handheld spectrometer to analyze the copper and nickel content in the rock powder cake and give the copper and nickel grade of the ore on site. To prevent the handheld spectrometer from being contaminated by rock powder, a thin layer of plastic wrap can be placed between the rock powder cake and the handheld spectrometer during the test. The handheld spectrometer needs to be calibrated in advance.

[0029] Step 7: Laboratory inspection. The dried rock powder is sent to the laboratory for analysis of copper and nickel content using traditional methods, and the rock powder grade is compared and calibrated using a handheld spectrometer.

[0030] In order to meet the complex environment of the mining field and the needs of the utility model, the utility model proposes a simple rock drilling fluid centrifugal classification device, which consists of a collecting device and a centrifugal classification device. The core of the device is the centrifugal classification device, which generates centrifugal force based on high-speed rotation.

[0031] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations, modifications, and substitutions made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A device for quickly determining the grade of copper-nickel sulfide ore, characterized in that: The invention comprises a centrifugal classification device, the centrifugal classification device comprising a liquid collecting funnel (1-1), a shell (2-1), a motor (2-2) and a centrifugal storage mechanism, the upper end of the shell (2-1) is provided with a shell cover (2-1-1), the center of the shell cover (2-1-1) is provided with an opening, the upper end of the opening of the shell cover (2-1-1) is provided with a liquid collecting funnel (1-1), the lower end of the opening of the shell cover (2-1-1) is provided with a clamp (2-1-6), the center of the bottom of the shell (2-1) is provided with a motor (2-2), and the motor (2-2) is provided with a centrifugal storage mechanism, The centrifugal storage mechanism comprises a circular bottom plate (2-3-1), the bottom plate (2-3-1) being mounted on a motor (2-2), a top plate (2-3-2) being arranged on the upper part of the outer shell (2-1), the top plate (2-3-2) being connected to the outer shell cover (2-1-1), the bottom plate (2-3-1) corresponding to the top plate (2-3-2), three groups of blocks (2-3-2-2) being arranged on the bottom plate (2-3-1) and the top plate (2-3-2), and screens being fixed on the blocks (2-3-2-2) of the corresponding groups via screen clamps (2-3-6).

2. The device for quickly determining the grade of copper-nickel sulfide ore according to claim 1, characterized in that: A splash-proof device (1-2) is provided at the central entrance of the liquid collecting funnel (1-1); the splash-proof device (1-2) is a hemispherical structure; the splash-proof device (1-2) is connected to the liquid collecting funnel (1-1) via four short columnar steel bars.

3. The device for quickly determining the grade of copper-nickel sulfide ore according to claim 1, characterized in that: A water drain switch (2-1-3) is provided at the bottom of the housing (2-1).

4. A device for quickly determining the grade of copper-nickel sulfide ore according to claim 1 or 3, characterized in that: The lower end of the outer shell (2-1) is provided with a shell foot (2-1-4).

5. The device for quickly determining the grade of copper-nickel sulfide ore according to claim 4, characterized in that: The upper end of the outer shell (2-1) is connected to an outer shell cover (2-1-1) via a fixing bolt (2-1-5).

6. The device for quickly determining the grade of copper-nickel sulfide ore according to claim 1, characterized in that: An upper plate clamp (2-3-2-1) is provided on the upper portion of the top plate (2-3-2), and the top plate (2-3-2) is connected to the lower portion of the outer shell cover (2-1-1) via the upper plate clamp (2-3-2-1) and the clamp (2-1-6).

7. The device for quickly determining the grade of copper-nickel sulfide ore according to claim 1, characterized in that: The sieves include a 10-mesh sieve (2-3-3), a 140-mesh sieve (2-3-4) and a 200-mesh sieve (2-3-5), and the 0-mesh sieve (2-3-3), the 140-mesh sieve (2-3-4) and the 200-mesh sieve (2-3-5) are installed in sequence from inside to outside.

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