Device for accelerating weathering of selected solid waste into soil by utilizing solar energy

Abstract

The utility model discloses a device for accelerating weathering of selected solid waste into soil by utilizing solar energy. The device comprises a solar heat collector, a liquid storage tank, a first one-way valve, a heat pipe, a first pressure pump, a gate valve, a reactor, a filler pipe, a thermometer, a second pressure pump, a second one-way valve and a circulating liquid pipe. According to the utility model, solar energy is converted into heat energy by utilizing the solar heat collector, and the heat energy is transmitted into the reactor, so that the weathering of the mining and selection solid waste into soil is effectively accelerated, the mineral decomposition and reconstruction are realized, and the resource utilization of the mining and selection solid waste as well as the treatment and ecological utilization of the mining and selection solid waste are realized; the filler pipes are distributed in the reactor, provide accommodating space for the selected solid waste, are uniformly distributed and are matched with the gap areas, so that the selected solid waste and high-temperature liquid are subjected to sufficient heat exchange, and weathering of the selected solid waste into soil is further accelerated.

Description

Technical Field

[0001] This utility model belongs to the field of resource utilization and ecological utilization technology of mining solid waste, specifically involving a device that uses solar energy to accelerate the weathering of mining solid waste into soil. Background Technology

[0002] Mining and beneficiation solid waste refers to various solid wastes generated during the ore mining and washing processes. Underground mining generates 2-3 tons of waste rock for every ton of ore mined, while open-pit mining generates 6-8 tons of waste rock for every ton of ore mined. The long-term, large-scale accumulation of mining and beneficiation solid waste poses a serious threat to the natural environment. Open-pit dumps of tailings, waste rock, and coal gangue occupy vast amounts of land resources, leading to the loss of vegetation cover, damage to soil structure, loss of habitats, and a significant decline in regional biodiversity.

[0003] The physicochemical composition of mining and beneficiation solid waste is similar to that of parent soil, enabling it to gradually form soil-like matrix through natural weathering or artificial intervention. Mining and beneficiation solid waste typically contains rock fragments, clay minerals, silicates, and small amounts of organic matter, components similar in origin to natural soils. For example, the clay minerals and carbonaceous matter in coal gangue can improve soil water retention and aeration, while elements such as iron, calcium, and magnesium in some tailings can replenish soil mineral nutrients. However, the natural weathering of mining and beneficiation solid waste to form soil is very slow. Current technologies include equipment for weathering solid waste into soil through combustion, but these methods are energy-intensive, produce exhaust gases, and require secondary treatment. There is an urgent need to develop a device to accelerate the weathering of mining and beneficiation solid waste into functional soil, thereby realizing the resource utilization of mining and beneficiation solid waste. Utility Model Content

[0004] To address the technical problems of slow solid waste weathering, the need for secondary treatment, and insufficient clean energy in existing technologies, the purpose of this utility model is to provide a device that utilizes solar energy to accelerate the weathering of mined solid waste into soil.

[0005] The purpose of this utility model is achieved as follows: It includes a solar collector, a storage tank, a first one-way valve, a heat pipe, a first pressure pump, a gate valve, a reactor, a packing tube, a thermometer, a second pressure pump, a second one-way valve, and a circulating liquid pipe. A packing tube is longitudinally arranged at the center of the reactor, and several equally spaced packing tubes are arranged in a ring around this packing tube. Gaps are formed between adjacent packing tubes and between the packing tubes and the inner wall of the reactor. The reactor has an inlet at the top and an outlet at the bottom, both equipped with gate valves. The outlet of the solar collector is connected to the inlet of the storage tank via a pipe. The outlet of the storage tank is connected to the inlet at the lower side of the reactor via a heat pipe, with the first one-way valve and the first pressure pump sequentially installed in the pipe. The outlet of the reactor is connected to the inlet of the solar collector via a circulating liquid pipe, with the second one-way valve and the second pressure pump sequentially installed in the circulating liquid pipe. The reactor is equipped with a thermometer.

[0006] The heat pipes are either steel-jacketed composite type or polyurethane insulation material wrapped type, which can greatly reduce heat loss during transportation.

[0007] The packing tube is made of materials with high strength and rigidity, such as steel and cast iron, and good thermal conductivity. When the reactor is in operation, the gate valve closes the reactor inlet and outlet, keeping the reactor in a closed state.

[0008] The solar collector is installed on the ground using a mounting frame. The installation angle of the solar panels can be adjusted according to geographical location, seasonal changes, and sunshine duration. The number of solar panels can be adjusted according to actual operating conditions.

[0009] The circulating liquid used in this device is a liquid material with good thermal conductivity, such as heat transfer oil, gasoline, diethylene glycol, silicone oil, etc.

[0010] The thermometer is used to monitor the temperature of the liquid inside the reactor. When the temperature of the liquid inside the reactor is lower than the set value (such as 120°C), the second pressure pump and the second check valve are opened, and the liquid inside the reactor is discharged into the solar collector through the circulation pipe for reheating, so as to realize the recycling of the liquid.

[0011] Preferably, the reactor is a cylindrical cavity, with both the inlet and outlet having a frustum-shaped structure, and the diameter of the bottom port of the outlet being smaller than the diameter of the top port of the inlet.

[0012] Preferably, the packing tube is cylindrical with a volume of 100 m³. 3 ~150 m 3 .

[0013] Preferably, there are 3 to 8 equally spaced packing tubes arranged in a ring.

[0014] Preferably, the solar collector heats the liquid to 120°C to 180°C, and more preferably to 150°C.

[0015] The beneficial effects of this utility model are as follows: This utility model utilizes a solar collector to convert solar energy into heat energy, which is clean and transferred to the reactor, effectively accelerating the weathering of mining solid waste into soil, decomposing and reconstructing minerals, realizing the resource utilization of mining solid waste, as well as the treatment, disposal and ecological utilization of mining solid waste; the reactor is equipped with packing pipes, which provide a space for the mining solid waste and are evenly distributed, and together with the void area, allow the mining solid waste to fully exchange heat with the high-temperature liquid, further accelerating the weathering of mining solid waste into soil. Attached Figure Description

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

[0017] Figure 2 This is a top view of the reactor containing nine packing tubes.

[0018] In the diagram: 1-Solar collector, 2-Storage tank, 3-First check valve, 4-Heat pipe, 5-First pressure pump, 6-Outlet, 7-Gate valve, 8-Reactor, 9-Inlet, 10-Packed tube, 11-Void area, 12-Thermometer, 13-Second pressure pump, 14-Second check valve, 15-Circulation pipe. Detailed Implementation

[0019] The present invention will be further described below with reference to the embodiments and accompanying drawings, but this does not limit the present invention in any way. Any changes or substitutions made based on the teachings of the present invention shall fall within the protection scope of the present invention.

[0020] Example 1

[0021] As attached Figures 1-2The apparatus shown in this embodiment, which utilizes solar energy to accelerate the weathering of solid waste into soil, includes a solar collector 1, a storage tank 2, a first one-way valve 3, a heat pipe 4, a first pressure pump 5, a gate valve 7, a reactor 8, a packing tube 10, a thermometer 12, a second pressure pump 13, a second one-way valve 14, and a circulating liquid pipe 15. A packing tube 10 is longitudinally arranged at the center of the reactor 8, and eight equally spaced packing tubes 10 are arranged in a ring around this packing tube 10. A void area 11 is formed between adjacent packing tubes 10 and between the packing tubes 10 and the inner wall of the reactor 8. The diameter of the packing tube 10 is 500 cm and its height is 1000 cm. The reactor 8 has a cylindrical cavity with a 100cm-150cm gap between the packing tubes. The reactor 8 has an inlet 9 at the top and an outlet 6 at the bottom, both equipped with gate valves 7. The outlet of the solar collector 1 is connected to the inlet of the storage tank 2 via a pipe, using heat-conducting oil. The outlet of the storage tank 2 is connected to the lower side inlet of the reactor 8 via a heat pipe 4, with a first check valve 3 and a first pressure pump 5 sequentially installed on the pipe. The outlet of the reactor 8 is connected to the inlet of the solar collector 1 via a circulating liquid pipe 15, with a second check valve 14 and a second pressure pump 13 sequentially installed on the circulating liquid pipe 15. The reactor 8 is equipped with a thermometer 12. The reactor 8 is a cylindrical cavity with both the inlet 9 and outlet 6 having a frustum-shaped structure, and the diameter of the bottom port of the outlet 6 being smaller than the diameter of the top port of the inlet 9. The packing tube 10 is cylindrical.

[0022] Solar energy is converted into heat energy by solar collector 1 to heat the liquid. The liquid is heated to 120℃~180℃ by solar collector 1 and then transported to storage tank 2. Before reactor 8 starts, the gate valve 7 corresponding to the outlet 6 is closed, and coal gangue enters the packing tube 10 through the inlet 9. After the packing tube 10 is filled, the gate valve 7 corresponding to the inlet 9 is closed, so that reactor 8 is in a closed state. The first one-way valve 3 and the first pressure pump 5 are opened, and the high-temperature liquid is injected into the void area 11 in reactor 8 through heat pipe 4 to heat the coal gangue. When the thermometer 12 reading is lower than 120℃, the second one-way valve 14 and the second pressure pump 13 are opened to transport the liquid in reactor 8 to solar collector 1 for reheating, so as to realize the recycling of liquid and continuously convert solar energy into heat energy to heat coal gangue, accelerate its weathering into soil process, and not produce pollution. After treatment, the liquid in reactor 8 is drained, and then the outlet 6 is opened to unload the reaction products.

[0023] Example 2

[0024] The device for accelerating the weathering of solid waste into soil using solar energy in this embodiment is based on Embodiment 1. The difference between this embodiment and the embodiment is that: there are 6 equally spaced packing tubes arranged in a ring-shaped row, and the reactor 8 has a double-layer metal wall structure. Powder (perlite, etc.) is used for heat insulation to prevent heat loss.

[0025] After the phosphorus tailings are crushed to a particle size of less than 10 mm, they are conveyed to the packing pipe 10 through the feed inlet 9. The temperature of the reactor 8 is controlled at 150℃ to accelerate the physical and chemical weathering of the phosphorus tailings and to convert the phosphorus element in the phosphorus tailings into available phosphorus.

Claims

1. A device for accelerating the weathering of solid waste into soil using solar energy, comprising a solar collector (1), a liquid storage tank (2), a first one-way valve (3), a heat pipe (4), a first pressure pump (5), a gate valve (7), a reactor (8), a packing tube (10), a thermometer (12), a second pressure pump (13), a second one-way valve (14), and a circulating liquid pipe (15), characterized in that... A packing tube (10) is arranged longitudinally at the center of the reactor (8), and several packing tubes (10) are arranged in a ring around the packing tube (10) at equal intervals. A void area (11) is formed between adjacent packing tubes (10) and between the packing tubes (10) and the inner wall of the reactor (8). The reactor (8) is provided with a feed inlet (9) at the top and a discharge outlet (6) at the bottom. Gate valves (7) are provided at the feed inlet (9) and the discharge outlet (6) respectively. The solar collector (1) The outlet of the reactor (8) is connected to the inlet of the storage tank (2) through a pipe. The outlet of the storage tank (2) is connected to the inlet of the lower side of the reactor (8) through a heat pipe (4). The pipe is equipped with a first one-way valve (3) and a first pressure pump (5) in sequence. The outlet of the reactor (8) is connected to the inlet of the solar collector (1) through a circulating liquid pipe (15). The circulating liquid pipe (15) is equipped with a second one-way valve (14) and a second pressure pump (13) in sequence. The reactor (8) is equipped with a thermometer (12).

2. The device for accelerating the weathering of solid waste into soil using solar energy according to claim 1, characterized in that... The reactor (8) is a cylindrical cavity. The inlet (9) and outlet (6) are both frustum-shaped structures, and the diameter of the bottom port of the outlet (6) is smaller than the diameter of the top port of the inlet (9).

3. The device for accelerating the weathering of solid waste into soil using solar energy according to claim 1, characterized in that... The packing tube (10) is cylindrical.

4. The device for accelerating the weathering of solid waste into soil using solar energy according to claim 1, characterized in that... There are 3 to 8 equally spaced packing tubes (10) arranged in a ring.

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