Coal mine underground coal gangue mining, selecting and filling integrated treatment system and method

Abstract

The invention relates to the field of coal mining, and discloses a coal mine underground coal gangue mining, selecting and filling integrated treatment system and method.The system comprises an intelligent sorting system used for conducting gangue pre-discharging on raw coal and separating gangue from coal; the crushing system comprises a jaw crusher and a rod mill, the TDS intelligent dry separator is connected with the jaw crusher through a lump coal transfer belt conveyor, and a feed port of the rod mill is connected with a discharge port of the jaw crusher through a chute; the pulping system is used for mixing the crushed gangue particles with water to prepare slurry and comprises a ball mill, and the ball mill is connected with a rod mill through a slurry pump and connected with a stirring pool through a conveying pump; the pumping system is used for pumping the gangue slurry to the goaf for filling and comprises a slurry pump; and the control system is used for controlling the operation of the whole system to realize automatic control. Integrated treatment of raw coal gangue pre-discharging, gangue crushing, pulping, pumping and filling is achieved, the production efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the field of coal mining, and in particular to an integrated processing system and method for coal gangue mining, selection and filling in underground coal mines. Background Art

[0002] A large amount of gangue is generated during coal mining. Traditional methods of handling it mainly include stacking and landfilling. These methods have the following problems: (1) Occupation of land resources: Gangue stacking occupies a large amount of land resources and affects the ecological environment; (2) Environmental pollution: Gangue stacking will produce dust, noise, odor and other pollution, affecting the surrounding environment; (3) Safety hazards: Gangue stacking has safety hazards such as spontaneous combustion and explosion;

[0003] (4) Waste of resources: Gangue contains usable coal resources, and piling them up wastes resources. Therefore, a system and method for integrated processing of gangue mining, selection and filling in underground coal mines was developed. Summary of the invention

[0004] In view of this, the object of the present invention is to provide an integrated processing system and method for gangue mining, selection and filling in coal mines, which realizes the integrated processing of raw coal pre-discharge of gangue, gangue crushing, slurrying, pumping and filling, improves production efficiency and reduces production costs.

[0005] In order to achieve the above-mentioned invention object, the technical solution adopted is as follows:

[0006] An integrated processing system for coal gangue mining, selection and filling in underground coal mines, comprising:

[0007] An intelligent sorting system is used to pre-discharge gangue from raw coal and separate gangue from coal, and the intelligent sorting system includes a TDS intelligent dry sorting machine;

[0008] The crushing system is used to crush the gangue into fine particles, including a jaw crusher and a rod mill. The TDS intelligent dry separator is connected to the jaw crusher through a lump coal transfer belt conveyor, and the feed port of the rod mill is connected to the discharge port of the jaw crusher through a chute;

[0009] The slurry making system is used to mix the crushed gangue particles with water to form a slurry, and comprises a ball mill, wherein the feed port of the ball mill is connected to the discharge port of the rod mill through a slurry pump, and the slurry discharge port of the ball mill is connected to a stirring tank through a delivery pump, and a stirrer is arranged in the stirring tank;

[0010] A pumping system for pumping the gangue slurry into the goaf for filling, including a slurry pump;

[0011] The control system is used to control the operation of the entire system and realize automatic control. The control system is respectively connected with the intelligent sorting system, the crushing system, the pulping system and the pumping system. The control system includes a controller.

[0012] As a further improvement of the present invention, it also includes a water supply system for supplying water to the pulping system.

[0013] As a further improvement of the present invention, the ball mill adopts a wet grid-type bearing ball mill, and the equipment specifications are Weight: 40t, rated power: 560kW, rated voltage: 10kV, rated speed: 740r / min, processing capacity: 106t / h.

[0014] As a further improvement of the present invention, the mixer adopts a ZHJB-3000 mixer, the motor power of the mixer is 11kw, 650V, the speed is 19r / min, the mixing drum of the mixer adopts a circular design, the diameter is 3m, the depth is 2.5m, the volume is 18m 3 .

[0015] As a further improvement of the present invention, the outlet of the mud pump is provided with a flow meter and a concentration meter for real-time detection of slurry concentration and delivery flow rate. At the same time, a dilution and flushing water device is prepared at the pump inlet for adjusting slurry concentration and flushing pipelines.

[0016] An integrated processing method for coal gangue mining, selection and filling in coal mines, comprising the following steps:

[0017] S1. Pre-discharge of raw coal gangue: Use intelligent sorting system to pre-discharge raw coal gangue and separate gangue from coal;

[0018] S2. Gangue crushing: Gangue after intelligent dry selection is sent to the crushing system, and then enters the jaw crusher for crushing through the belt conveyor and scraper conveyor. It is crushed to ≤40mm and enters the rod mill;

[0019] S3, slurry making: mixing the crushed gangue particles with water to form slurry;

[0020] S4. Pumping and filling: The gangue slurry in the mixing tank enters the suction port of the filling pump, and the gangue slurry is pumped to the filling position by the filling pump, and filled by gravity to fill the void space in the goaf.

[0021] As a further improvement of the present invention, in step S3, the crushed gangue particles are mixed with water to form a slurry, which specifically includes the following steps: the slurry from the rod mill is transported to the feed port of the ball mill through a slurry pump, the slurry is ball-milled to 100 mesh in the ball mill and enters the stirring tank, water is used to be pumped from the water tank position through a pipeline water supply method using an electromagnetic valve or an electric control valve to measure the water and send it to the mixer for slurrying, and the gangue and water are evenly added from one side of the stirring tank according to a preset ratio and fully stirred.

[0022] As a further improvement of the present invention, in step S4, gravity is used for filling to fill the void spaces in the goaf, specifically including the following steps: filling is performed using pre-constructed high, medium, low / co-position filling boreholes, and the gangue slurry enters the reserved holes and then enters the void spaces in the goaf, first starting to flow in in a spreading manner, using gravity to diffuse into the voids in the goaf, and after the voids in the lower part of the goaf are filled, starting to fill in a stacked manner along the slope of the lower layer of slurry according to the gravity slope.

[0023] The beneficial effects of the present invention are as follows: the present invention provides an integrated processing system and method for mining, selection and filling of coal gangue in coal mines, which has the advantages of integrated mining, selection and filling, intelligent sorting, efficient crushing, advanced pulping technology, and automatic control. It can effectively improve the recovery rate of coal resources, reduce environmental pollution, improve production efficiency, reduce production costs, and realize green mining, and has important application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0025] Figure 1 It is a process flow chart of the present invention. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0028] An integrated processing system for coal gangue mining, selection and filling in underground coal mines, comprising:

[0029] An intelligent sorting system is used to pre-discharge gangue from raw coal and separate gangue from coal, and the intelligent sorting system includes a TDS intelligent dry sorting machine;

[0030] The crushing system is used to crush the gangue into fine particles, including a jaw crusher and a rod mill. The TDS intelligent dry separator is connected to the jaw crusher through a lump coal transfer belt conveyor, and the feed port of the rod mill is connected to the discharge port of the jaw crusher through a chute;

[0031] The slurry making system is used to mix the crushed gangue particles with water to form a slurry, and comprises a ball mill, wherein the feed port of the ball mill is connected to the discharge port of the rod mill through a slurry pump, and the slurry discharge port of the ball mill is connected to a stirring tank through a delivery pump, and a stirrer is arranged in the stirring tank;

[0032] A pumping system for pumping the gangue slurry into the goaf for filling, including a slurry pump;

[0033] The control system is used to control the operation of the entire system and realize automatic control. The control system is respectively connected with the intelligent sorting system, the crushing system, the pulping system and the pumping system. The control system includes a controller.

[0034] It also includes a water supply system for supplying water to the pulping system.

[0035] The main dust-producing point of the crushing system is the crusher. In order to ensure dust-free operation of the crushing system, a closed hood + wet filter dust collector is used for dust removal at key dust-producing locations to ensure the cleanliness of the airflow to the greatest extent and avoid dust pollution. The KCS-550D-Ⅱ mining wet filter dust collector adopts two-stage spraying, captures dust through a cyclone and a filter, and then combines it with high-efficiency corrugated plate dehydration to achieve efficient dust removal. This makes the dust collector have the characteristics of high dust removal efficiency, good dehydration effect, low noise, and low maintenance. The dust collector is mainly composed of three parts: the front spray section, the supporting fan, and the dust removal and dehydration section.

[0036] The ball mill adopts a wet grid-type bearing ball mill, and the equipment specifications are Weight: 40t, rated power: 560kW, rated voltage: 10kV, rated speed: 740r / min, processing capacity: 106t / h.

[0037] The mixer adopts ZHJB-3000 mixer, the motor power of the mixer is 11kw, 650V, the speed is 19r / min, the mixing drum of the mixer adopts circular design, the diameter is 3m, the depth is 2.5m, the volume is 18m 3 .

[0038] The outlet of the mud pump is provided with a flow meter and a concentration meter for real-time detection of slurry concentration and delivery flow rate. At the same time, a dilution and flushing water device is prepared at the pump inlet for adjusting slurry concentration and flushing pipelines.

[0039] like Figure 1 As shown, a method for integrated processing of coal gangue mining, selection and filling in coal mines includes the following steps:

[0040] S1. Pre-discharge of raw coal gangue: Use intelligent sorting system to pre-discharge raw coal gangue and separate gangue from coal;

[0041] S2. Gangue crushing: Gangue after intelligent dry selection is sent to the crushing system, and then enters the jaw crusher for crushing through the belt conveyor and scraper conveyor. It is crushed to ≤40mm and enters the rod mill;

[0042] S3, slurry making: mixing the crushed gangue particles with water to form slurry;

[0043] S4. Pumping and filling: The gangue slurry in the mixing tank enters the suction port of the filling pump, and the gangue slurry is pumped to the filling position by the filling pump, and filled by gravity to fill the void space in the goaf.

[0044] In step S3, the crushed gangue particles are mixed with water to form a slurry, which specifically includes the following steps: the slurry from the rod mill is transported to the feed port of the ball mill through a slurry pump, the slurry is ball-milled to 100 mesh in the ball mill and enters the stirring tank, water is pumped from the water tank through a pipeline and metered into the mixer by a solenoid valve or an electric control valve for slurry making, and gangue and water are evenly added from one side of the stirring tank according to a preset ratio and fully stirred.

[0045] In step S4, gravity is used for filling to fill the void spaces in the goaf, specifically including the following steps: filling is performed using pre-constructed high, medium, low / co-position filling boreholes, and the gangue slurry enters the reserved holes and then enters the void spaces in the goaf, first starting to flow in in a spreading manner, using gravity to diffuse into the void spaces in the goaf, and after the voids in the lower part of the goaf are filled, overlapping filling begins along the slope of the lower layer of slurry according to the gravity slope.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, component splitting or combination, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An integrated processing system for coal gangue mining, selection and filling in underground coal mines, characterized in that: include: An intelligent sorting system is used to pre-discharge gangue from raw coal and separate gangue from coal, and the intelligent sorting system includes a TDS intelligent dry sorting machine; The crushing system is used to crush the gangue into fine particles, including a jaw crusher and a rod mill. The TDS intelligent dry separator is connected to the jaw crusher through a lump coal transfer belt conveyor, and the feed port of the rod mill is connected to the discharge port of the jaw crusher through a chute; The slurry making system is used to mix the crushed gangue particles with water to form a slurry, and comprises a ball mill, wherein the feed port of the ball mill is connected to the discharge port of the rod mill through a slurry pump, and the slurry discharge port of the ball mill is connected to a stirring tank through a delivery pump, and a stirrer is arranged in the stirring tank; A pumping system for pumping the gangue slurry into the goaf for filling, including a slurry pump; The control system is used to control the operation of the entire system and realize automatic control. The control system is respectively connected with the intelligent sorting system, the crushing system, the pulping system and the pumping system.

2. The integrated processing system for coal gangue mining, selection and filling in underground coal mines according to claim 1 is characterized in that: It also includes a water supply system for supplying water to the pulping system.

3. The integrated processing system for coal gangue mining, selection and filling in underground coal mines according to claim 1 is characterized in that: The ball mill adopts a wet grid-type bearing ball mill, and the equipment specifications are Weight: 40t, rated power: 560kW, rated voltage: 10kV, rated speed: 740r / min, processing capacity: 106t / h.

4. The integrated processing system for coal gangue mining, selection and filling in underground coal mines according to claim 1 is characterized in that: The mixer adopts ZHJB-3000 mixer, the motor power of the mixer is 11kw, 650V, the speed is 19r / min, the mixing drum of the mixer adopts circular design, the diameter is 3m, the depth is 2.5m, the volume is 18m 3 .

5. The integrated processing system for coal gangue mining, selection and filling in underground coal mines according to claim 1 is characterized in that: The outlet of the mud pump is provided with a flow meter and a concentration meter for real-time detection of slurry concentration and delivery flow rate. At the same time, a dilution and flushing water device is prepared at the pump inlet for adjusting slurry concentration and flushing pipelines.

6. An integrated processing method for coal gangue mining, dressing and filling in coal mines, characterized in that: The following steps are involved: S1. Pre-discharge of raw coal gangue: Use intelligent sorting system to pre-discharge raw coal gangue and separate gangue from coal; S2. Gangue crushing: Gangue after intelligent dry selection is sent to the crushing system, and then enters the jaw crusher for crushing through the belt conveyor and scraper conveyor. It is crushed to ≤40mm and enters the rod mill; S3, slurry making: mixing the crushed gangue particles with water to form slurry; S4. Pumping and filling: The gangue slurry in the mixing tank enters the suction port of the filling pump, and the gangue slurry is pumped to the filling position by the filling pump, and filled by gravity to fill the void space in the goaf.

7. The method for integrated processing of coal gangue mining, selection and filling in underground coal mines according to claim 6, characterized in that: In step S3, the crushed gangue particles are mixed with water to form a slurry, which specifically includes the following steps: the slurry from the rod mill is transported to the feed port of the ball mill through a slurry pump, the slurry is ball-milled to 100 mesh in the ball mill and enters the stirring tank, water is pumped from the water tank through a pipeline and metered into the mixer by a solenoid valve or an electric control valve for slurry making, and gangue and water are evenly added from one side of the stirring tank according to a preset ratio and fully stirred.

8. The method for integrated processing of coal gangue mining, selection and filling in underground coal mines according to claim 6, characterized in that: In step S4, gravity is used for filling to fill the void spaces in the goaf, specifically including the following steps: filling is performed using pre-constructed high, medium, low / co-position filling boreholes, and the gangue slurry enters the reserved holes and then enters the void spaces in the goaf, first starting to flow in in a spreading manner, using gravity to diffuse into the void spaces in the goaf, and after the voids in the lower part of the goaf are filled, overlapping filling begins along the slope of the lower layer of slurry according to the gravity slope.

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