Converter steel slag hot decomposing pool water seepage blocking system

Abstract

The utility model discloses a converter steel slag hot smothering pool water seepage blocking system, it includes setting between two adjacent hot smothering pools water blocking system, water guide system and drainage system, water blocking system includes the water barrier layer and isolation layer for the physical blocking seepage path between hot smothering pool, and the isolation layer sets up at the bottom of water barrier layer, water guide system includes the seepage layer and buffer water guide layer for the hot smothering pool water seepage directional guide to drainage system, and the seepage layer sets up at the bottom of isolation layer, and the buffer water guide layer sets up at both sides of water barrier layer, drainage system includes drainage cushion layer and drainage passage, and the drainage cushion layer sets up at the bottom of seepage layer, and one end of seepage layer is connected with drainage corridor through drainage passage, and the scheme is through "guide - resistance - drainage " integrated design, solves the problem of the blasting accident problem caused by the water seepage under the high temperature rapid cooling condition.

Description

Technical Field

[0001] This utility model relates to the field of solid waste treatment technology, specifically to a seepage prevention system for a converter steel slag hot quenching pool. Background Technology

[0002] Currently, the third-generation pool-type hot quenching process for converter steel slag is widely used in domestic steel plants. This process has the advantages of small footprint, short process flow, and high processing efficiency. The third-generation pool-type hot quenching process involves directly dumping high-temperature converter steel slag into the hot quenching pool, then using an excavator to remove the slag and apply water for cooling. Finally, the slag is quenched by applying water to form solid steel slag with smaller particle size and lower temperature.

[0003] In actual production sites, multiple hot quenching tanks are arranged in a straight line. Due to the harsh working environment of the hot quenching tanks, which are subjected to high temperatures, rapid cooling, and mechanical impacts over a long period, cracks appear in the concrete walls of the tanks. Once the hot quenching tanks are filled with converter slag, the slag-quenching operation begins, and the cooling water seeps out along the cracks in the tank walls into adjacent hot quenching tanks. If slag-turning operations are underway in adjacent hot quenching tanks, the high-temperature converter slag coming into contact with the accumulated water will cause the water to rapidly vaporize, potentially leading to a blasting accident and seriously affecting on-site safety. Therefore, a seepage prevention system is urgently needed to block seepage between the hot quenching tanks. Utility Model Content

[0004] To address the aforementioned shortcomings of existing technologies, this utility model provides a seepage prevention system for the hot quenching pool of converter steel slag, which solves the problem of blasting accidents caused by seepage in the hot quenching pool under high-temperature rapid cooling conditions.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A seepage blocking system for a converter slag hot quenching pool is provided, comprising a water-blocking system, a water-guiding system, and a drainage system disposed between two adjacent hot quenching pools; the water-blocking system includes a water-proof layer and an isolation layer for physically blocking the seepage path between the hot quenching pools, with the isolation layer disposed at the bottom of the water-proof layer; the water-guiding system includes a seepage layer and a buffer water-guiding layer for directionally guiding seepage water from the hot quenching pool to the drainage system, with the seepage layer disposed at the bottom of the isolation layer and the buffer water-guiding layers disposed on both sides of the water-proof layer; the drainage system includes a drainage pad and a drainage channel, with the drainage pad disposed at the bottom of the seepage layer and one end of the seepage layer connected to a drainage corridor via the drainage channel.

[0006] Furthermore, the isolation layer is made of corrosion-resistant and waterproof felt material, with a thickness of 3-5mm; the synergistic effect of the isolation layer and the waterproof layer achieves the function of blocking water seepage.

[0007] Furthermore, the waterproof layer is made of C30 impermeable concrete with a permeability grade of P6; the drainage cushion layer is made of C20 impermeable concrete with a permeability grade of P6 and a thickness of 300-400mm.

[0008] Furthermore, the seepage layer is filled with pebbles with a particle size of 20-50 mm, with a thickness of 500-600 mm and a porosity of not less than 35%.

[0009] Furthermore, the buffer water-guiding layer is made of extruded polystyrene board with a thickness of 50-100mm, and several vertical water-guiding grooves are provided at intervals on the outer side of the buffer water-guiding layer; the buffer water-guiding layer and the seepage layer together form an integrated structure for directional seepage guidance.

[0010] Furthermore, the extruded polystyrene board has a compression resilience of not less than 85% at 150°C, thus enabling it to alleviate thermal stress cracking.

[0011] Furthermore, the drainage cushion layer is sloped at 2%-5% along the drainage direction, and the drainage channel is connected to the seepage layer at the bottom of the slope to ensure that the seepage water flows into the drainage channel by gravity.

[0012] Furthermore, a barrier net is installed at the inlet end of the drainage channel. The diameter of the drainage channel is 100-300mm, and the aperture of the barrier net is 5-15mm. This is to prevent pebble particles from clogging the channel and to achieve the dual functions of timely drainage and filtration of debris.

[0013] The beneficial effects of this utility model are as follows: This solution adopts an integrated multi-layer protection design of "guidance-blocking-drainage". The water blocking system physically blocks the seepage path to prevent water from seeping laterally; the water guiding system directionally guides the seepage water to avoid accumulation; and the drainage system drains water and filters debris in a timely manner. This ensures that water can be effectively blocked and guided even under harsh working conditions such as high temperature, rapid cooling, and mechanical vibration, thereby avoiding the risk of explosion caused by the rapid vaporization of high-temperature steel slag when it encounters seepage water, and ensuring the safety of personnel and equipment in the hot quenching pool operation area. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The above and other objects, features, and advantages of the present invention will become clearer through the drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not intentionally drawn to scale with actual dimensions; the focus is on illustrating the main idea of ​​the present utility model.

[0015] Figure 1This is a cross-sectional view of the structure located between two adjacent hot quenching pools.

[0016] Figure 2 This is a longitudinal sectional view of the scheme.

[0017] Figure 3 This is a schematic diagram of the structure of the buffer water-conducting layer.

[0018] 1. Drainage cushion layer; 2. Drainage channel; 3. Barrier net; 4. Permeability layer; 5. Isolation layer; 6. Buffer water guiding layer; 7. Water guiding channel; 8. First row of bolts in the hot sump; 9. Concrete wall of the hot sump; 10. Backfill soil; 11. Drainage corridor; 12. Hot sump. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0023] like Figures 1 to 3As shown, the seepage blocking system of the converter slag hot quenching pool in this scheme includes a water blocking system, a water guiding system, and a drainage system installed between two adjacent hot quenching pools 12; the water blocking system includes a water-blocking layer 7 and an isolation layer 5 for physically blocking the seepage path between the hot quenching pools 12, with the isolation layer 5 located at the bottom of the water-blocking layer 7; the water guiding system includes a seepage layer 4 and a buffer water guiding layer 6 for directionally guiding the seepage water from the hot quenching pool 12 to the drainage system, with the seepage layer 4 located at the bottom of the isolation layer 5 and the buffer water guiding layer 6 located on both sides of the water-blocking layer 7; the drainage system includes a drainage pad 1 and a drainage channel 2, with the drainage pad 1 located at the bottom of the seepage layer 4, and one end of the seepage layer 4 connected to the drainage corridor 11 through the drainage channel 2.

[0024] As an optional implementation, the isolation layer 5 is a corrosion-resistant and waterproof felt material with a thickness of 3-5mm, and the waterproof layer 7 is C30 impermeable concrete with an impermeability grade of P6. Under the synergistic effect of the isolation layer 5 and the waterproof layer 7, the function of blocking water seepage is achieved.

[0025] The drainage cushion layer 1 is made of C20 impermeable concrete with an impermeability grade of P6 and a thickness of 300-400mm.

[0026] As an optional implementation, the seepage layer 4 is filled with pebbles with a particle size of 20-50mm, with a thickness of 500-600mm and a porosity of not less than 35%; the buffer water-guiding layer 6 is an extruded polystyrene board with a thickness of 50-100mm, and several vertical water-guiding grooves 61 are provided at intervals on the outer surface of the buffer water-guiding layer 6; the buffer water-guiding layer 6 and the seepage layer 4 together form an integrated structure for directional seepage guidance; at the same time, the compression rebound rate of the extruded polystyrene board at 150℃ is not less than 85%, which enables it to alleviate thermal stress cracking.

[0027] As an optional implementation, both the seepage layer 4 and the drainage cushion layer 1 are provided with a slope of 2%-5% along the drainage direction. The drainage channel 2 is connected to the bottom end of the seepage layer 4 to ensure that the seepage water flows into the drainage channel 2 by gravity. The drainage cushion layer 1 is made of C20 impermeable concrete with an impermeability grade of P6 and a thickness of 300-400mm. The inlet end of the drainage channel 2 is provided with a barrier net 3. The diameter of the drainage channel 2 is 100-300mm, and the aperture of the barrier net 3 is 5-15mm. This is to prevent pebble particles from clogging the channel and to achieve the dual functions of timely drainage and filtration of debris.

[0028] The construction process of this plan is as follows: S1: Excavation: Use excavators and other engineering machinery to break up and remove the filling material between the hot quenching pools 12. The excavation depth is 350mm lower than the bottom of the hot quenching pools 12. S2: Slope: Slope along the direction from the hot stagnation pool 12 to the drainage corridor 11, so that the water flows to the drainage corridor 11. The slope is 3% to ensure that the cooling water of the seeping stagnation residue can flow away in time. S3: Set up drainage cushion layer 1: Set up drainage cushion layer 1 with C20 impermeable concrete, impermeability grade P6, thickness 350mm, and cure for 3 days before proceeding to the next step. S4: Set up drainage channel 2: At the drainage corridor 11, an opening is made above the drainage cushion layer 1 to set up drainage channel 2. Drainage channel 2 is a hole with a diameter of 200mm, which is connected to the drainage corridor 11 to lead the accumulated water to the drainage corridor 11 for discharge; a barrier net 3 is set at the opening. The barrier screen is made of stainless steel and has a screen diameter of 15mm to prevent pebbles and other objects from entering the drainage corridor 11. S5: Set a seepage layer 4: Set a seepage layer 4 of a certain thickness above the concrete cushion layer. The seepage layer 4 is filled with pebbles with a particle size of 20-50mm, with a thickness of 550mm and a porosity of ≥35%. The accumulation of pebbles will create a certain amount of porosity, ensuring that the seeping slag cooling water can infiltrate into the drainage cushion layer 1 in time and be discharged to the drainage corridor 11 through the drainage channel 2. S6: Set up isolation layer 5: After the seepage layer 4 is leveled with pebbles, set up isolation layer 5. The material of isolation layer 5 is a corrosion-resistant and waterproof material. The material of isolation layer 5 is asphalt felt isolation layer 5. Isolation layer 5 can effectively block the drainage layer and the waterproof layer 7. S7: Set up a buffer water guiding layer 6: Set up a buffer water guiding layer 6 of a certain thickness along the concrete wall 9 of the hot quenching pool. The material is extruded polystyrene board with a thickness of 50mm. Several vertical water guiding grooves 61 are set at intervals on the surface of the buffer water guiding layer 6 in contact with the concrete wall 9 of the hot quenching pool. S8: Set up a water-proof layer 7: In the space formed by the buffer water-conducting layer 6 and the isolation layer 5, a water-proof layer 7 of a certain thickness is set up. The material of the water-proof layer 7 has the property of blocking water seepage. The material of the water-proof layer 7 is C30 impermeable concrete with an impermeability grade of P6. The material of the water-proof layer 7 is 500mm higher than the first row of bolts 8 in the hot sump pool. S9: Backfill: Backfill with plain soil in layers of 10 and compact it, with each layer not exceeding 300mm in thickness and a compaction coefficient not less than 0.95.

[0029] In summary, this solution, through a systematic and modular anti-seepage design, combined with scientific material selection and standardized construction techniques, effectively solves the seepage problem of converter steel slag hot quenching pool 12 under high temperature and rapid cooling environment. It has multiple beneficial effects such as high safety, strong applicability, convenient construction, economy and environmental protection, and is suitable for promotion to similar metallurgical solid waste treatment scenarios.

[0030] Although the specific embodiments of the utility model have been described in detail with reference to the accompanying drawings, they should not be construed as limiting the scope of protection of this patent; various modifications and variations that can be made by those skilled in the art without inventive effort within the scope described in the claims are still within the scope of protection of this patent.

Claims

1. A seepage prevention system for a converter slag hot quenching pool, characterized in that, The system includes a water-blocking system, a water-guiding system, and a drainage system disposed between two adjacent hot-cooling pools. The water-blocking system includes a water-proof layer and an isolation layer for physically blocking the seepage path between the hot-cooling pools, with the isolation layer disposed at the bottom of the water-proof layer. The water-guiding system includes a seepage layer and a buffer water-guiding layer for directionally guiding seepage water from the hot-cooling pools to the drainage system, with the seepage layer disposed at the bottom of the isolation layer and the buffer water-guiding layers disposed on both sides of the water-proof layer. The drainage system includes a drainage pad and a drainage channel, with the drainage pad disposed at the bottom of the seepage layer and one end of the seepage layer connected to a drainage corridor via the drainage channel.

2. The seepage prevention system for the hot quenching pool of converter steel slag according to claim 1, characterized in that, The isolation layer is a corrosion-resistant and waterproof roofing felt material, and the thickness of the isolation layer is 3-5mm.

3. The seepage prevention system for the converter slag hot quenching pool according to claim 1, characterized in that, The waterproof layer is made of C30 impermeable concrete with an impermeability grade of P6; the drainage cushion layer is made of C20 impermeable concrete with an impermeability grade of P6 and a thickness of 300-400mm.

4. The seepage prevention system for the converter slag hot quenching pool according to claim 1, characterized in that, The seepage layer is filled with pebbles with a particle size of 20-50mm, with a thickness of 500-600mm and a porosity of not less than 35%.

5. The seepage prevention system for the converter slag hot quenching pool according to claim 1, characterized in that, The buffer water-guiding layer is an extruded polystyrene board with a thickness of 50-100mm, and several vertical water-guiding grooves are provided at intervals on the outer side of the buffer water-guiding layer.

6. The seepage prevention system for the converter slag hot quenching pool according to claim 5, characterized in that, The extruded polystyrene board has a compression resilience of not less than 85% at 150°C.

7. The seepage prevention system for the hot quenching pool of converter steel slag according to claim 1, characterized in that, The drainage cushion layer is provided with a slope of 2%-5% along the drainage direction, and the drainage channel is connected to the end of the seepage layer located at the bottom of the slope.

8. The seepage prevention system for the hot quenching pool of converter steel slag according to claim 1, characterized in that, The drainage channel is equipped with a barrier net at its inlet end. The diameter of the drainage channel is 100-300mm, and the aperture of the barrier net is 5-15mm.

Images