CN113029843A - Mine filling concentration environment-friendly accurate measuring device - Google Patents
Mine filling concentration environment-friendly accurate measuring device Download PDFInfo
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- CN113029843A CN113029843A CN202010552475.7A CN202010552475A CN113029843A CN 113029843 A CN113029843 A CN 113029843A CN 202010552475 A CN202010552475 A CN 202010552475A CN 113029843 A CN113029843 A CN 113029843A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/36—Analysing materials by measuring the density or specific gravity, e.g. determining quantity of moisture
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Abstract
The invention provides an environment-friendly accurate measuring device for mine filling concentration, and belongs to the technical field of mine filling. The device includes sample container, filling material concentration detection system, rigid link, sample container scavenge pipe, concentration measurement controller, transmission cable, surveyed ground paste container and autonomous system, is surveyed the ground paste sampler and takes a sample to surveyed the ground paste through scalable rigid link control, and the upper end is connected with filling material concentration detection system, and filling material concentration detection system passes through the transmission cable and is connected with the concentration measurement controller, and autonomous system is connected to the concentration measurement controller. The device has scientific measurement principle, environment-friendly measurement method, reasonable measurement position and accurate measurement result, is easy to commercialize for production and manufacturing enterprises through technical guidance, has purchasing and using requirements for all mines adopting filling mining, and has very wide market popularization value.
Description
Technical Field
The invention relates to the technical field of mine filling, in particular to an environment-friendly and accurate measuring device for mine filling concentration.
Background
The metal ore mining method comprises a caving method, an open stope method and a filling method, and the filling method is the only choice of a plurality of mines along with the continuous increase of mining depth and the higher and higher environmental protection requirement. For metal ore filling, the most core is the filling concentration, and the filling concentration is too high, so that the pipe is inhibited and wrinkled and is easy to cause pipe blockage; the filling concentration is too low, the strength is reduced under the condition of the same cement consumption, or the cement consumption is increased and the cost is increased under the condition of the same strength, and the layered segregation of a stope is reached, so the environment is polluted. Pack consistency is considered as the "soul" of pack mining, the key to pack strength and cost control.
However, the current measurement of filler concentration is not satisfactory. The most commonly used methods are nuclear densitometers and ultrasonic densitometers, wherein a nuclear densitometer has radiation that causes more or less harm to the human body over long-term use; the ultrasonic concentration meter has larger measurement error for the concentration of the filling material with higher concentration and non-full pipe; and the two concentration meters need to be frequently checked in the using process. In order to accurately check the filling concentration, a specially-assigned person often performs irregular sampling and manual measurement by adopting a drying method and the like in the filling process. For a long time, the environmental protection and accurate measurement of the filling concentration has not been solved.
Therefore, the invention provides an environment-friendly and accurate measuring device for mine filling concentration, which aims to environment-friendly and accurately measure the concentration of metal ore filling materials. By adopting the device, the concentration of the filling slurry can be accurately detected through a central control room or on-site control, and the use is very convenient. The method has important significance in the aspects of accurate control of mine filling concentration, reduction of filling cost and the like.
Disclosure of Invention
The invention provides an environment-friendly accurate measuring device for mine filling concentration, aiming at the problems that the existing filling concentration detection is not environment-friendly and inaccurate.
The device includes the sample container, the rigid link pole, filling material concentration detection system, the sample container scavenge pipe, the transmission cable, the concentration measurement controller, surveyed ground paste container and autonomous system, it is surveyed the ground paste to hold in the ground paste container to be surveyed, the sample container can go deep into and be surveyed sample in the ground paste, the sample container passes through the filling material concentration detection system of rigid link pole connection top, filling material concentration detection system below sets up the sample container scavenge pipe, the sample container scavenge pipe can wash the sample container, filling material concentration detection system passes through the transmission cable and connects the concentration measurement controller, the remote autonomous system is connected to the concentration measurement controller.
The sampling container is one of a cone, a truncated cone, a cylinder, a quadrangular pyramid and the like, and is easy to intrude into the slurry to be tested for sampling when moving downwards and has a discharging function when moving upwards; the inner surface and the outer surface of the sampling container are smooth and are not easy to rust and corrode.
The rigid connecting rod can stretch out and draw back, and the ground paste sampler is surveyed the ground paste through scalable rigid connecting rod control and is taken a sample.
The filling material concentration detection system comprises a weighing sensor, a distance sensor and a rigid connecting rod telescopic control structure, the precision requirement of the weighing sensor is not less than 1/1000, the precision requirement of the distance sensor is not less than 1cm, and the lifting speed of the telescopic structure is adjusted according to actual requirements. The concentration detection mechanism is protected by a shell.
The concentration measurement controller is mainly used for setting and controlling measurement parameters, including basic parameter settings such as specific gravity, volume, stroke distance, speed and the like, setting parameter inspection, manual and automatic measurement, weight zero clearing, starting measurement, density and mass concentration conversion, liquid crystal screen display and other functions. The functions can be realized through a pre-programmed measurement and control program, and the concentration measurement controller is protected by a shell. The concentration measurement controller provides a remote interface. Before actual use, the device needs to be measured and calibrated for at least 3 times, and the accuracy of a measuring result is ensured.
The filling material concentration detection system and the concentration measurement controller are both fixedly installed on a platform or a support frame where the mine filling concentration environment-friendly accurate measurement device is located.
The measured slurry is the final slurry obtained by uniformly mixing the full tailings, the cement, other aggregates and the additive.
The slurry container to be measured can be a horizontal stirring tank, a vertical stirring tank, a buffer tank and the like, the slurry in the container is the slurry to be filled into an underground stope through a drill hole, and the slurry container to be measured has enough space and installation conditions. The installation condition can be artificially created if the installation condition is not met.
The automatic control system can be a PLC (programmable logic controller) and a DSC (differential scanning controller) system, is connected through a remote interface of the concentration measurement controller and can be compatible with the existing filling automatic control system.
The specific use method of the device is as follows:
s1: the device is arranged at a proper position and used for testing the slurry concentration in the stirring tank or buffering the slurry in the storage bin between the stirring tank and the drill hole, and the tested slurry is the slurry formed by uniformly mixing all filling materials;
s2: before use, checking the volume v of the sampling container for not less than 3 times by using clear water, and checking the symmetrical weighing sensor;
s3: inputting the density value of solid particles of the filling material into a concentration measurement controller;
s4: the concentration measurement controller is used on site or an automatic control system is used remotely to control the device, a weight reset button is clicked at first, then a start button is clicked to start measurement, and the measured weight of the slurry is m;
s5: the density rho of the filling material is m/v, the density rho is set through a built-in program of a concentration measurement controller, and a density result is displayed on the concentration measurement controller or an automatic control system;
s6: calculating mass concentration according to the density of the solid particles of the filling material and the density of the filling material through the built-in program setting of the concentration measurement controller; the density and concentration switching button on the concentration measurement controller can freely convert the density and the concentration;
s7: and unloading the sampling container, emptying the filling material, and cleaning the sampling container by adopting a sampling container cleaning pipe for next measurement.
The technical scheme of the invention has the following beneficial effects:
according to the scheme, the method is easy to commercialize for production and manufacturing enterprises through technical guidance, and all mines adopting filling mining have purchasing and using requirements, so that the method has a very wide market popularization value. The main advantages of the device are summarized as follows: firstly, the measurement principle is scientific. The traditional concentration measurement is indirect, the principle of the measuring device is simple and scientific, namely, the density is the ratio of mass to volume, and the density and the mass concentration can be freely converted through basic physical properties. Secondly, the measuring method is environment-friendly. Compared with the most accurate nuclear density meter of the present filling concentration, the measuring method of the device is environment-friendly and pollution-free. Thirdly, the measurement position is reasonable. The traditional filling concentration measurement is generally installed on a conveying pipeline, but due to concentration fluctuation of slurry and change of the cross section area in the pipeline, the non-contact concentration measurement is difficult to measure accurately, and although the measurement part of the device is not a pipeline, the concentration measurement result is representative because the measured slurry is the final filling material. Fourth, the measurement results are accurate. The testing device ensures the accuracy of the test result by means of weighing sensor precision control, expansion rate control, checking for avoiding errors for not less than 3 times and the like.
Drawings
FIG. 1 is a schematic structural diagram of an environment-friendly and accurate mine filling concentration measuring device according to the present invention;
FIG. 2 is a schematic view of a horizontal stirring installation in example 1 of the present invention;
FIG. 3 is a schematic view of a vertical stirring installation in example 2 of the present invention.
Wherein: the method comprises the following steps of 1-sampling container, 2-rigid connecting rod, 3-filling material concentration detection system, 4-sampling container cleaning tube, 5-transmission cable, 6-concentration measurement controller, 7-measured slurry, 8-measured slurry container and 9-automatic control system.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The invention provides an environment-friendly and accurate measuring device for mine filling concentration.
As shown in fig. 1, the device includes sampling container 1, rigid connection rod 2, filling material concentration detection system 3, sampling container scavenge pipe 4, transmission cable 5, concentration measurement controller 6, surveyed ground paste container 8 and autonomous system 9, hold surveyed ground paste 7 in the surveyed ground paste container 8, sampling container 1 can go deep into and be surveyed and take a sample in the ground paste 7, sampling container 1 passes through the filling material concentration detection system 3 of rigid connection rod 2 connection top, filling material concentration detection system 3 below sets up sampling container scavenge pipe 4, sampling container scavenge pipe 4 can wash sampling container 1, filling material concentration detection system 3 passes through transmission cable 5 and connects concentration measurement controller 6, concentration measurement controller 6 connects autonomous system 9.
The device use as follows:
s1: the device is arranged at a proper position and used for testing the slurry concentration in the stirring tank or buffering the slurry in the storage bin between the stirring tank and the drill hole, and the tested slurry is the slurry formed by uniformly mixing all filling materials;
s2: before use, checking the volume v of the sampling container for not less than 3 times by using clear water, and checking the symmetrical weighing sensor;
s3: inputting a particle density value in a concentration measurement controller;
s4: the concentration measurement controller is used on site or an automatic control system is used remotely to control the device, a weight reset button is clicked at first, then a start button is clicked to start measurement, and the measured weight of the slurry is m;
s5: the density rho of the filling material is m/v, the density result is displayed on a concentration measurement controller or an automatic control system through the built-in program setting of the concentration measurement controller;
s6: calculating mass concentration according to the density of the solid particles of the filling material and the density of the filling material through the built-in program setting of the concentration measurement controller; the density and concentration switching button on the concentration measurement controller can freely convert the density and the concentration;
s7: and unloading the sampling container, emptying the filling material, and cleaning the sampling container by adopting a sampling container cleaning pipe for next measurement.
This is described below in connection with two specific embodiments.
Example 1-horizontal stirrer:
as shown in figure 2, in practical application, the device is applied above a discharge opening of a second section of a horizontal mixer for a certain copper ore, and the capacity of the mixer is 120m3H is used as the reference value. Sampling container 1 is connected in filling material concentration detection system 3 through rigid connection rod 2, and during actual sampling, sampling in the horizontal stirred tank is deepened to conical sampling container 1, and rigid connection rod 2 contracts, promotes sampling container, detects, and the testing result passes through transmission cable 5 and transmits to concentration measurement controller 6. The mineral filler has a solid densityAbout 2.73g/cm3The volume of the sampling container is 500ml (which needs to be checked before use), the sampling container is reset when weighing, the mass of the container is 923g when the slurry is full, and the density of the filling material is 1.85g/cm3The mass concentration was switched to 72.5%.
Example 2-vertical stirrer:
as shown in FIG. 3, in practical use, this apparatus is applied to a buffer tank below a certain iron ore vertical mixer, and the slurry is first stirred in two high-concentration stirring tanks of phi 2600X 3000, each vertical mixer having a capacity of 150m3And h, the two vertically stirred slurry are merged in a buffer pool before entering the drill hole. Sampling container 1 is connected in filling material concentration detection system 3 through rigid connection rod 2, and during actual sampling, sampling in the horizontal stirred tank is deepened to conical sampling container 1, and rigid connection rod 2 contracts, promotes sampling container, detects, and the testing result passes through transmission cable 5 and transmits to concentration measurement controller 6. The mineral filler has a solid density of about 2.95g/cm3The volume of the sampling container is 500ml (which needs to be checked before use), the sampling container is reset when weighing, the mass of the container is 890g when slurry is filled, and the density of the filling material is 1.78g/cm3The mass concentration was switched to 66.3%.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. The utility model provides an accurate measuring device of mine filling concentration environmental protection which characterized in that: comprises a sampling container (1), a rigid connecting rod (2), a filling material concentration detection system (3), a sampling container cleaning pipe (4), a transmission cable (5), a concentration measurement controller (6), a measured slurry container (8) and an automatic control system (9), hold in being surveyed ground paste container (8) and surveyed ground paste (7), sample container (1) can go deep into and be surveyed sample in ground paste (7), sample container (1) are through filling material concentration detection system (3) of rigid connection pole (2) connection top, filling material concentration detection system (3) below sets up sample container scavenge pipe (4), sample container scavenge pipe (4) can wash sample container (1), filling material concentration detection system (3) are through transmission cable (5) connection concentration measurement controller (6), remote autonomous system (9) is connected as required in concentration measurement controller (6).
2. The environment-friendly and accurate mine filling concentration measuring device according to claim 1, characterized in that: the sampling container (1) is one of a cone, a truncated cone, a cylinder and a quadrangular pyramid, and the sampling container (1) is easy to intrude into the slurry to be detected for sampling when moving downwards and has a discharging function when moving upwards; the inner surface and the outer surface of the sampling container (1) are smooth; two sides of the sampling container (1) are provided with overflow ports.
3. The environment-friendly and accurate mine filling concentration measuring device according to claim 1, characterized in that: the rigid connecting rod (2) can be stretched and retracted.
4. The environment-friendly and accurate mine filling concentration measuring device according to claim 1, characterized in that: the filling material concentration detection system (3) comprises a weighing sensor, a distance sensor and a rigid connecting rod telescopic control structure, the precision requirement of the weighing sensor is not less than 1/1000, the precision requirement of the distance sensor is not less than 1cm, and the lifting speed of the telescopic control structure is adjusted according to actual needs.
5. The environment-friendly and accurate mine filling concentration measuring device according to claim 1, characterized in that: the filling material concentration detection system (3) and the concentration measurement controller (6) are fixedly mounted on a platform or a support frame where the mine filling concentration environment-friendly accurate measurement device is located, and the concentration detection system (3) and the concentration measurement controller (6) are protected by shells.
6. The environment-friendly and accurate mine filling concentration measuring device according to claim 1, characterized in that: the concentration measurement controller (6) sets and controls measurement parameters, the measurement parameters comprise specific gravity, travel distance and speed, the measurement parameter control comprises parameter setting inspection, manual or automatic measurement, weight zero clearing, measurement starting and density and mass concentration conversion, and the parameters are displayed through a liquid crystal screen.
7. The environment-friendly and accurate mine filling concentration measuring device according to claim 1, characterized in that: the concentration measurement controller (6) provides a remote interface, and during actual measurement, the mass concentration measurement and the drying method are compared and calibrated for at least 3 times, so that the accuracy of the measurement result is ensured.
8. The environment-friendly and accurate mine filling concentration measuring device according to claim 1, characterized in that: the automatic control system (9) is a PLC or DSC system, the automatic control system (9) is connected with a remote interface of the concentration measurement controller, and the automatic control system can be compatible with the existing filling automatic control system.
9. The method for applying the environment-friendly accurate mine filling concentration measuring device according to claim 1, wherein the method comprises the following steps:
s1: mounting a measuring device at a position to be measured;
s2: before use, the volume v of the sampling container (1) is checked for at least 3 times by using clear water, and the symmetrical weighing sensor is checked;
s3: inputting the density value of solid particles of the filling material into a concentration measurement controller (6);
s4: the concentration measurement controller (6) is used on site or the automatic control system (9) is used remotely to control the device, firstly, a weight zero clearing button is clicked, then, a starting button is clicked to start measurement, and the measured weight of the slurry is m;
s5: the density rho of the filling material is m/v and is set by a built-in program of the concentration measurement controller (6), and the density result is displayed on the concentration measurement controller (6) or the automatic control system (9);
s6: calculating mass concentration according to the density of the solid particles of the filling material and the density of the filling material through a built-in program of a concentration measurement controller (6); a density and concentration switching button on the concentration measurement controller (6) can freely switch the density and the concentration;
s7: the sampling container (1) is unloaded, the filling material is emptied, and then the sampling container is cleaned by a sampling container cleaning pipe (4) for the next measurement.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010552475.7A CN113029843A (en) | 2020-06-17 | 2020-06-17 | Mine filling concentration environment-friendly accurate measuring device |
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| CN202010552475.7A CN113029843A (en) | 2020-06-17 | 2020-06-17 | Mine filling concentration environment-friendly accurate measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115291507A (en) * | 2022-01-06 | 2022-11-04 | 兰州理工大学 | Mine filling slurry concentration sliding mode control method and system |
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- 2020-06-17 CN CN202010552475.7A patent/CN113029843A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115291507A (en) * | 2022-01-06 | 2022-11-04 | 兰州理工大学 | Mine filling slurry concentration sliding mode control method and system |
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