Synchronous elimination method for efficiently eliminating CO

Abstract

A synchronous elimination method for efficiently eliminating CO comprises the steps that a first CO elimination slurry roll is pushed into the bottom of a hole, and a second protection mechanism makes contact with the bottom of the hole; then the explosive cartridges with the required number are loaded; filling a second CO elimination slurry roll; the blast holes are blocked through yellow mud, and a CO eliminating slurry roll-explosive roll-CO eliminating slurry roll sequence structure is formed; the high temperature and high pressure generated at the moment of explosion of the explosive act on the CO elimination slurry roll, so that the CO elimination suspended slurry is evaporated and is in full contact with the CO toxic gas to realize the CO elimination operation, and meanwhile, part of dust is taken away by utilizing part of liquid drops of the CO elimination suspended slurry, so that the dust falling and reducing operation is realized while the CO elimination operation is realized. The method is simple in implementation process and ideal in CO removal effect, CO can be removed from the source, meanwhile, the effect of synchronous dust falling can be achieved, life health and safety of workers can be effectively guaranteed, and meanwhile the environment protection effect can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of toxic gas purification, and in particular is a synchronous elimination method for efficiently eliminating CO. Background Art

[0002] After the shallow hole blasting operation, the generated CO toxic gas and dust will be thrown into the tunnel space along with the rock under the action of the shock wave, which can easily cause the CO concentration in the tunnel after the blast to be too high. At the same time, it will also cause the concentration of dust in the tunnel to increase sharply, which will pose a serious threat to the personal safety of the operators. At present, water cannon mud and local ventilation measures are conventional disposal measures for shallow hole blasting operations. When the explosives explode, the water cannon mud bag will be broken, and the droplets produced can play the role of flame extinguishing and dust reduction. However, this disposal method has a limited effect on CO elimination; local ventilation measures mainly use local ventilators and wind pipes to supply air to the working face, thereby achieving the effect of diluting CO concentration and reducing dust. However, during the shallow hole blasting operation, the throwing of rocks is easy to hit, and even press the wind pipe, thereby seriously weakening the toxicity and dust removal effect of the ventilation measures. In summary, the existing disposal measures have certain limitations, and they cannot achieve the simultaneous elimination of CO and dust. Therefore, it is urgent to provide a measure that can simultaneously achieve CO elimination and dust reduction and smoke elimination to ensure the life, health and safety of operators. Summary of the invention

[0003] In view of the problems existing in the above-mentioned prior art, the present invention provides a synchronous elimination method for efficient elimination of CO. The method has a simple implementation process and an ideal CO removal effect. It can achieve the purpose of eliminating CO from the source. At the same time, it can also play a role in synchronous dust reduction, which can effectively protect the life, health and safety of workers and help improve the environmental protection effect.

[0004] In order to achieve the above-mentioned purpose, the present invention provides a synchronous elimination method for efficient elimination of CO, which adopts a CO elimination slurry roll, wherein the CO elimination slurry roll includes an elimination slurry roll body and a CO elimination suspended slurry; the elimination slurry roll body includes a cylindrical outer shell, a hard bottom plate, a support grid, an anti-condensation ball, a snap-fit, an outer connecting block, an inner connecting block, a first protection mechanism and a second protection mechanism; the outer shell is a flexible shell; the hard bottom plate is fixedly packaged at the head end of the outer shell, and a plurality of outer connecting blocks are fixedly connected around the axis on its outer side surface, and an inner connecting block is fixedly connected at the axis on its inner side surface; the support grid is a cross-shaped support member, which is covered with leakage holes, is inserted into the inner cavity of the outer shell, and the center of its head end is fixedly connected to the hard bottom plate through the inner connecting block, and the support grid is used to support the cylindrical state of the outer shell and divide the inner cavity of the outer shell into four fan-shaped cavities; the anti-condensation ball is a solid ball; a plurality of anti-condensation balls are assembled inside the outer shell and distributed in the four fan-shaped cavities; the snap-fit ​​is located on the outside of the end of the support grid, It is radially contracted and buckled on the outside of the outer shell, and the end of the outer shell is closed; a slurry filling space is formed between the snap fastener, the hard bottom plate and the outer shell; the first protection mechanism is arranged on the outside of the head end of the outer shell, and includes a plurality of connecting support rods, a support frame and a shock-absorbing arc plate; the number of the plurality of connecting support rods corresponds to the number of the plurality of external connecting blocks, and the ends of the plurality of connecting support rods are fixedly connected to the hard bottom plate through a plurality of external connecting blocks respectively; the end of the support frame is fixedly connected to the head end of the plurality of connecting support rods; the end of the shock-absorbing arc plate is fixedly connected to the head end of the support frame, and its head end has an arc-shaped groove 1 that is concave toward the end direction, and a flexible cushion layer is covered in the arc-shaped groove 1; the second protection mechanism is arranged on the outside of the end of the outer shell, and includes a connecting plate and an elastic frame; the connecting plate is fixedly connected to the end of the outer shell; the elastic frame is umbrella-shaped, and its head end is hinged to the central area of ​​the connecting plate through a pin shaft, and its end has an arc-shaped groove 2 that is concave toward the head end; the CO elimination suspension slurry is filled in the slurry filling space; The simultaneous elimination method for efficient CO elimination includes the following steps: Step 1: Filling operation; S11: Complete the drilling operation of the blasthole at the scheduled blasting location; S12: pushing the first CO elimination slurry roll to the bottom of the blast hole, and making the second protection mechanism of the CO elimination slurry roll contact with the bottom of the hole; S13: Pushing the required number of explosive rolls into the blasthole one by one, while ensuring that the end of the inner explosive roll contacts the shock-absorbing arc plate in the first protection mechanism on the first CO elimination slurry roll; wherein a section of the explosive roll at the outer end is buried with a detonator, and when pushing the section of the explosive roll at the outer end, ensure that the gun line connected to the detonator extends along the edge of the blasthole to the outside of the hole mouth; S14: Make the second protection mechanism of the second CO2 elimination slurry roll close to one side of the hole bottom, then push the second CO2 elimination slurry roll into the blasthole, and at the same time, ensure that the shock absorbing arc plate in the first protection mechanism of the second CO2 elimination slurry roll is in contact with the end of the outer end explosive roll; S15: The blasthole is blocked with yellow mud, so that a charging structure of CO2 elimination slurry roll, explosive roll, and CO2 elimination slurry roll is formed in the blasthole, thereby completing the filling operation of the blasthole; Step 2: CO elimination operation; S21: After the filling operation of the blasthole is completed, the blast line is led out, and then the personnel are evacuated to the outside of the safe area, and then the blast line is used to detonate the detonator, and the explosive roll is detonated by the detonator; S22: The high temperature and high pressure generated by the explosion of explosives are used to act on the CO elimination slurry volume, so that the CO elimination suspension slurry evaporates and fully contacts the CO poisonous gas to achieve the CO elimination operation. At the same time, part of the CO elimination suspension slurry droplets are used to take away part of the dust, so as to achieve dust reduction and dust reduction operations while achieving the CO elimination operation.

[0005] Further, in order to effectively improve the fluidity of the CO2-eliminating suspension slurry to avoid condensation, the support grid includes a first grid and a second grid; The lengths of the first grille and the second grille are both shorter than the length of the outer shell, and the widths of the first grille and the second grille are both shorter than the inner diameter of the outer shell; the first grille passes through the strip groove; the middle section of the second grille in the width direction is inserted into the strip groove and is perpendicular to the first grille; The leakage holes on the first grid are several rectangular holes distributed all over its surface, a connecting shaft is fixedly connected to the center of its head end, and is fixedly connected to the inner connecting block through the connecting shaft; the leakage holes on the second grid are several circular holes distributed all over its surface.

[0006] As a preferred embodiment, the outer shell is made of flame-retardant material; the shock-absorbing arc plate is made of flame-retardant material, and a plurality of circular dispersed holes are opened on the surface of the shock-absorbing arc plate and the flexible cushion layer; the connecting support rod is a rigid rod made of flame-retardant material.

[0007] Furthermore, in order to effectively reduce the amount of CO2 elimination agent used, and at the same time, to improve the elimination effect and elimination efficiency of CO2, and also to make the formed CO2 elimination suspension slurry have a certain dust reduction effect, the preparation method of the CO2 elimination suspension slurry is as follows: A1: preparing a first suspension; firstly synthesizing a high-efficiency CO eliminator by a hydrothermal method, a coprecipitation method or a microscopic morphology control method, wherein the CO eliminator is a transition metal oxide composed of one or more elements of iron, copper, manganese and cerium; then grinding the CO eliminator into fine powder, then adding a liquid inorganic mineral binder thereto, and fully stirring the powder into a slurry to form a first suspension; A2: preparing a second suspension; stirring and dispersing the prepared first suspension, and adding a surfactant dropwise thereto, and stirring sufficiently after the addition to form a second suspension; A3: preparing a CO elimination suspension slurry; adding a set amount of deionized water and an auxiliary solvent to the second suspension, and then performing a second stirring dispersion to form a CO elimination suspension slurry.

[0008] Furthermore, in order to ensure that the prepared CO elimination suspension slurry has a better CO elimination effect, and at the same time, to ensure that the CO elimination suspension slurry has good heat absorption capacity and dust reduction and removal capacity, in A1, the particle size of the CO elimination agent is 0.01-0.075 mm, and its mass concentration is 1%-15%, based on the total mass of the CO elimination suspension slurry; the liquid inorganic mineral binder component is one or more silicate materials, and the mass ratio of the CO elimination agent to the liquid inorganic mineral binder is 1:1-1.4; in A2, the surfactant is a non-ionic surfactant, and the mass concentration of the surfactant is 0.0001%-0.03%, based on the total mass of the CO elimination suspension slurry; in A3, the auxiliary solvent is one of the organic acid salts, and the volume ratio of deionized water to the auxiliary solvent is 20-35:1.

[0009] In the present invention, the outer shell of the CO elimination slurry roll is a flexible shell, and the CO elimination suspension slurry is filled inside. In this way, when the explosive explodes, it can ensure that the outer shell can be quickly broken under high temperature and high pressure conditions, and it is conducive to the high temperature and high pressure conditions to act quickly on the CO elimination slurry roll, so that the elimination slurry is quickly dispersed, evaporated and fully contacted with CO gas, achieving the effect of synchronous elimination of CO. At the same time, the slurry droplets can also be used to absorb part of the dust in the explosion environment, playing a role of synchronous dust removal, and effectively reducing the harm of CO toxic gas and fine dust in blasting operations. The cross-shaped support grid is inserted into the interior of the outer shell, and the support effect of the support grid can be used to make the flexible outer shell always maintain a cylindrical state. At the same time, the support grid can also be used to divide the space inside the outer shell into four fan-shaped cavities, so that the support grid can play a certain role in isolating the CO elimination suspension slurry filled in later, and the leakage holes on the support grid itself can promote the interactive flow of CO elimination suspension slurries in different fan-shaped cavities, so that it can be helpful to avoid the condensation of CO elimination suspension slurry, ensuring the subsequent use effect. By loading a number of anti-condensation balls into the inner cavity of the outer shell, and distributing the anti-condensation balls in four fan-shaped cavities, after the CO elimination slurry is filled in the later stage, the stirring effect of the anti-condensation balls can play an anti-condensation role. At the same time, the fluidity of the CO elimination suspension slurry can be enhanced in conjunction with the leakage holes on the supporting grid, further ensuring the subsequent use effect. On the premise of ensuring the good fluidity of the CO elimination suspension slurry, it is beneficial to significantly reduce the amount of CO elimination agent used, and it can ensure that the CO elimination suspension slurry can be evaporated more quickly by the high temperature and high pressure environment, thereby significantly improving the elimination effect and elimination efficiency of CO. At the same time, part of the slurry droplets can also be used to play a role in dust reduction and dust removal. By assembling a snap fastener on the outside of the last section of the outer shell, the end of the outer shell can be quickly closed by the snap fastener, so that the CO elimination suspension slurry can be stored in a closed space, which is beneficial to make the internal CO elimination suspension slurry evaporate more quickly and more concentratedly during the blasting process, further improving the CO elimination effect, and at the same time, it can also better play a role in dust reduction and dust reduction. An internal connection block is installed inside the hard bottom plate, which can be used to position and connect the support grid, thereby preventing the support grid from being separated from the outer shell. In addition, the support grid fixedly connected to the outer shell is conducive to promoting the fluidity of the CO2-eliminating suspension slurry in different fan-shaped cavities, further avoiding the condensation of the CO2-eliminating suspension slurry. For the first protection mechanism, the support frame is connected to the hard bottom plate through multiple support rods, and the length of the support rods can be used to isolate a longer buffer space. In this way, the CO2-eliminating slurry roll on one side of the first protection mechanism can be effectively prevented from being broken due to accidents.In addition, since the first protection mechanism is in contact with the explosive roll during the specific use process, this buffer space can be used to effectively reduce the impact force generated at the initial moment of the explosion, so as to avoid the CO elimination slurry roll being pushed away by the impact force at the initial moment of the explosion, ensuring that the high temperature and high pressure environment generated by the explosion can quickly and effectively act on the CO elimination slurry roll, causing the outer shell to rupture quickly, and causing the internal CO elimination suspension slurry to evaporate quickly, so that it can be timely and fully in contact with the generated CO gas, so that the CO elimination operation can be efficiently achieved, and the effect of CO in-situ elimination can be significantly improved. The shock-absorbing arc plate is fixedly connected to the support frame, and then the inner surface thereof is covered with a flexible cushion layer. On the one hand, the flexible cushion layer can be used to form a shorter flexible buffer space, and on the other hand, the concave space in the shock-absorbing arc plate can be used to cover the end of the explosive roll, so as to play a role in positioning the explosive roll. For the second protective structure, the connecting plate is connected to the end of the outer shell, and then the umbrella-shaped elastic frame is hinged to the connecting plate through a pin shaft. In this way, a buffer space 2 can be formed between the elastic frame with elastic deformation ability and the snap-on component, which can effectively prevent the CO elimination slurry roll on one side of the second protective mechanism from accidentally rupturing. In addition, the hinged connection method of the elastic frame can make it have a certain swing amplitude. When the outer shell is a flexible shell, the elastic frame can have better adaptability during the installation process through flexible swinging, ensuring the buffering effect of the buffer space 2. The two CO elimination slurry rolls are arranged on both sides of the explosive roll respectively. The CO elimination effect is triggered by the high temperature and high pressure conditions generated by the explosion, and thus has the ability to eliminate CO in situ, which can achieve efficient CO elimination operations under the premise of using less CO elimination agent. The CO elimination slurry roll adopted in the present invention has a double protection structure, which can not only reduce the usage of CO elimination agent, but also achieve the purpose of eliminating CO toxic and harmful gases generated by shallow hole blasting operations from the source. At the same time, it can also play a certain role in smoke elimination and dust reduction during the blasting operation, and to a certain extent achieve the trinity effect of CO elimination, smoke elimination and dust reduction in situ in the blasthole, which improves the efficiency of CO elimination operations and effectively protects the life, health and safety of workers.

[0010] The method has a simple implementation process and an ideal CO removal effect. A charge structure of a CO elimination slurry roll, an explosive roll, and a CO elimination slurry roll is formed inside the blasthole. Through the charge structure and the structure of the CO elimination slurry roll itself, the purpose of efficiently eliminating the toxic and harmful CO gas generated by the shallow hole blasting operation from the source can be fully achieved on the premise of effectively reducing the amount of CO elimination agent used. At the same time, the CO elimination suspension slurry can be used to absorb and take away the dust generated during the explosion, thereby playing a role in synchronous dust reduction. To a certain extent, the three-in-one effect of CO elimination, smoke elimination, and dust reduction can be achieved in situ in the blasthole, thereby effectively protecting the life, health, and safety of the operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 Schematic diagram of the structure of the CO elimination slurry roll in the present invention; Figure 2 yes Figure 1 AA cross-sectional view; Figure 3 is a schematic structural diagram of the first grid in the present invention; Figure 4 is a schematic structural diagram of the second grid in the present invention; Figure 5 It is a schematic diagram of the assembly of the CO elimination slurry coil in the present invention; Figure 6 It is a schematic diagram of the CO elimination structure of the CO elimination slurry roll-explosive roll-CO elimination slurry roll in the present invention.

[0012] In the figure: 1. CO elimination slurry roll, 2. outer shell, 3. hard bottom plate, 4. support grid, 5. anti-condensation ball, 6. fastener, 7. outer connection block, 8. inner connection block, 9. first protection mechanism, 10. second protection mechanism, 11. connecting support rod, 12. support frame, 13. shock-absorbing arc plate, 14. flexible cushion, 15. connecting plate, 16. elastic frame, 17. pin, 18. first grid, 19. second grid, 20. strip groove, 21. connecting shaft, 22. elimination slurry roll body, 23. blast hole, 24. explosive roll, 25. detonator, 26. gun line, 27. yellow mud, 28. cone section. DETAILED DESCRIPTION

[0013] The present invention will be further described below in conjunction with the accompanying drawings.

[0014] like Figures 1 to 6As shown, the present invention provides a synchronous elimination method for efficient elimination of CO, adopting a CO elimination slurry roll 1, wherein the CO elimination slurry roll 1 includes an elimination slurry roll body 22 and a CO elimination suspension slurry; the elimination slurry roll body 22 includes a cylindrical outer shell 2, a hard bottom plate 3, a support grid 4, an anti-condensation ball 5, a snap 6, an outer connecting block 7, an inner connecting block 8, a first protection mechanism 9 and a second protection mechanism 10; the outer shell 2 is a flexible shell; the hard bottom plate 3 is fixedly packaged at the head end of the outer shell 2, and a plurality of outer connecting blocks 7 are fixedly connected to the outer surface thereof around the axis, and an inner connecting block 8 is fixedly connected to the axis on the inner side thereof; wherein, the outer connecting blocks 7 and the inner connecting blocks 8 on the hard bottom plate 3 do not penetrate in the thickness direction thereof during the installation process, so as to avoid leakage of the CO elimination suspension from the side of the hard bottom plate 3 in the later stage. The support grid 4 is a cross-shaped support member with leakage holes all over it. It is inserted into the inner cavity of the outer shell 2, and the center of its head end is fixedly connected to the hard bottom plate 3 through the inner connecting block 8. The support grid 4 is used to support the cylindrical state of the outer shell 2 and divide the inner cavity of the outer shell 2 into four fan-shaped cavities; the anti-coagulation ball 5 is a solid ball with a smooth surface. The anti-coagulation ball 5 enhances the fluidity of the CO2-eliminating suspended slurry to prevent excessive adhesion; a number of anti-coagulation balls 5 are assembled inside the outer shell 2 and distributed in the four fan-shaped cavities; the snap-fit ​​member 6 is located on the outside of the end of the support grid 4, and is radially contracted and snapped onto the outside of the outer shell 2 to close the end of the outer shell 2; a slurry filling space is formed between the snap-fit ​​member 6, the hard bottom plate 3 and the outer shell 2; the first protective mechanism 9 is arranged on the outside of the head end of the outer shell 2, and includes a plurality of connecting support rods 11, a support frame 1 2 and a shock-absorbing arc plate 13; the number of the plurality of connecting support rods 11 corresponds to the number of the plurality of external connecting blocks 7, and the ends of the plurality of connecting support rods 11 are fixedly connected to the hard bottom plate 3 through the plurality of external connecting blocks 7 respectively; the end of the support frame 12 is fixedly connected to the head end of the plurality of connecting support rods 11; the end of the shock-absorbing arc plate 13 is fixedly connected to the head end of the support frame 12, and its head end has an arc-shaped groove 1 which is recessed toward the end, and a flexible cushion layer 14 is covered in the arc-shaped groove 1; the second protection mechanism 10 is arranged on the outer side of the end of the outer shell 2, and includes a connecting plate 15 and an elastic frame 16; the connecting plate 15 is fixedly connected to the end of the outer shell 2; the elastic frame 16 is umbrella-shaped, and its head end is hinged to the central area of ​​the connecting plate 15 through a pin 17, and its end has an arc-shaped groove 2 which is recessed toward the head end; the CO elimination suspension slurry is filled in the slurry filling space; As a preferred embodiment, the radial dimensions of the first protection mechanism 9 and the second protection mechanism 10 may be slightly larger than the radial dimension of the outer shell 2, but smaller than the dimension of the blast hole 23, so as to be smoothly pushed into the blast hole 23; As a preferred embodiment, the buckle 6 forms a cone section 28 at the end of the outer shell 2 while closing the end of the outer shell 2; as a further preferred embodiment, the connecting plate 15 is encapsulated at the open end of the cone section 28; the buckle 6 is used to form the cone section 28 at the end of the outer shell 2, and the open end of the cone section 28 is used to connect the second protection mechanism 10, and the cone section 28 can be used to further form a buffer section, so that the second protection mechanism 10 can be used to form a double protection mechanism for the end side of the CO elimination slurry roll 1; The simultaneous elimination method for efficient CO elimination includes the following steps: Step 1: Filling operation; S11: completing the drilling operation of the blast hole 23 at the predetermined blasting position; S12: Pushing the first CO elimination slurry roll 1 to the bottom of the blast hole 23, and making the second protection mechanism 10 of the CO elimination slurry roll 1 contact with the bottom of the hole; S13: Push the required number of explosive rolls 24 into the blasthole one by one, and at the same time, ensure that the end of the inner explosive roll 24 contacts the shock-absorbing arc plate 13 in the first protection mechanism 9 on the first CO elimination slurry roll 1; wherein, a section of the explosive roll 24 at the outer end is buried with a detonator 25, and when pushing the section of the explosive roll 24 at the outer end, ensure that the firing line 26 connected to the detonator 25 extends along the edge of the blasthole 23 to the outside of the hole; S14: The second protection mechanism 10 of the second CO2 elimination slurry roll 1 is brought close to one side of the hole bottom, and then the second CO2 elimination slurry roll 1 is pushed into the blast hole 23, while ensuring that the shock absorbing arc plate 13 in the first protection mechanism 9 of the second CO2 elimination slurry roll 1 is in contact with the end of the outer explosive roll 24; S15: The blasthole 23 is blocked with yellow mud 27, so that a charging structure of CO elimination slurry roll 1, explosive roll 24, and CO elimination slurry roll 1 is formed in the blasthole 23, and the filling operation of the blasthole 23 is completed; Step 2: CO elimination operation; S21: After the filling operation of the blasthole 23 is completed, the blast line 26 is led out, and then the personnel are evacuated to the outside of the safe area, and then the blast line 26 is used to detonate the detonator 25, and the explosive roll 24 is detonated by the detonator 25; S22: The high temperature and high pressure generated by the explosion of the explosives are used to act on the CO elimination slurry volume 1, so that the CO elimination suspension slurry evaporates and fully contacts the CO poisonous gas to achieve the CO elimination operation. At the same time, part of the dust is taken away by the droplets of the CO elimination suspension slurry, so as to achieve dust reduction and dust reduction operations while achieving the CO elimination operation.

[0015] In order to effectively improve the fluidity of the CO2-eliminating suspension slurry to avoid condensation, the support grid 4 includes a first grid 18 and a second grid 19; The lengths of the first grille 18 and the second grille 19 are both shorter than the length of the outer shell 2, and the widths of the first grille 18 and the second grille 19 are both shorter than the inner diameter of the outer shell 2. The center area of ​​the first grille 18 in the width direction is provided with a strip groove 20 along the length direction for the second grille 19 to pass through. The middle section of the second grille 19 in the width direction is inserted into the strip groove 20 and is perpendicular to the first grille 18. The leakage holes on the first grid 18 are a plurality of rectangular holes distributed throughout its surface, a connecting shaft 21 is fixedly connected to the center of its head end, and is fixedly connected to the inner connecting block 8 through the connecting shaft 21; the leakage holes on the second grid 19 are a plurality of circular holes distributed throughout its surface.

[0016] As a preferred embodiment, the outer shell 2 is made of flame-retardant material; the shock-absorbing arc plate 13 is made of flame-retardant material, and a plurality of circular dispersed holes are opened on the surface of the shock-absorbing arc plate 13 and the flexible cushion layer 14; the connecting support rod 11 is a rigid rod, which is made of flame-retardant material.

[0017] In order to effectively reduce the amount of CO eliminator used, and at the same time, to improve the elimination effect and elimination efficiency of CO, and also to make the formed CO elimination suspension slurry have a certain dust reduction effect, the preparation method of the CO elimination suspension slurry is as follows: A1: preparing a first suspension; firstly synthesizing a high-efficiency CO eliminator by a hydrothermal method, a coprecipitation method or a microscopic morphology control method, wherein the CO eliminator is a transition metal oxide composed of one or more elements of iron, copper, manganese and cerium; then grinding the CO eliminator into fine powder, then adding a liquid inorganic mineral binder thereto, and fully stirring the powder into a slurry to form a first suspension; A2: preparing a second suspension; stirring and dispersing the prepared first suspension, and adding a surfactant dropwise thereto, and stirring sufficiently after the addition to form a second suspension; A3: preparing a CO elimination suspension slurry; adding a set amount of deionized water and an auxiliary solvent to the second suspension, and then performing a second stirring dispersion to form a CO elimination suspension slurry.

[0018] In order to ensure that the prepared CO elimination suspension slurry has a better CO elimination effect, and at the same time, it can also ensure that the CO elimination suspension slurry has good heat absorption capacity and dust reduction and removal capacity, in A1, the particle size of the CO elimination agent is 0.01-0.075 mm, and its mass concentration is 1%-15%, based on the total mass of the CO elimination suspension slurry; the liquid inorganic mineral binder component is one or more silicate materials, and the mass ratio of the CO elimination agent to the liquid inorganic mineral binder is 1:1-1.4; in A2, the surfactant is a non-ionic surfactant, and the mass concentration of the surfactant is 0.0001%-0.03%, based on the total mass of the CO elimination suspension slurry; in A3, the auxiliary solvent is one of the organic acid salts, and the volume ratio of deionized water to the auxiliary solvent is 20-35:1.

[0019] In the present invention, the outer shell of the CO elimination slurry roll is a flexible shell, and the CO elimination suspension slurry is filled inside. In this way, when the explosive explodes, it can ensure that the outer shell can be quickly broken under high temperature and high pressure conditions, and it is conducive to the high temperature and high pressure conditions to act quickly on the CO elimination slurry roll, so that the elimination slurry is quickly dispersed, evaporated and fully contacted with CO gas, achieving the effect of synchronous elimination of CO. At the same time, the slurry droplets can also be used to absorb part of the dust in the explosion environment, playing a role of synchronous dust removal, and effectively reducing the harm of CO toxic gas and fine dust in blasting operations. The cross-shaped support grid is inserted into the interior of the outer shell, and the support effect of the support grid can be used to make the flexible outer shell always maintain a cylindrical state. At the same time, the support grid can also be used to divide the space inside the outer shell into four fan-shaped cavities, so that the support grid can play a certain role in isolating the CO elimination suspension slurry filled in later, and the leakage holes on the support grid itself can promote the interactive flow of CO elimination suspension slurries in different fan-shaped cavities, so that it can be helpful to avoid the condensation of CO elimination suspension slurry, ensuring the subsequent use effect. By loading a number of anti-condensation balls into the inner cavity of the outer shell, and distributing the anti-condensation balls in four fan-shaped cavities, after the CO elimination slurry is filled in the later stage, the stirring effect of the anti-condensation balls can play an anti-condensation role. At the same time, the fluidity of the CO elimination suspension slurry can be enhanced in conjunction with the leakage holes on the supporting grid, further ensuring the subsequent use effect. On the premise of ensuring the good fluidity of the CO elimination suspension slurry, it is beneficial to significantly reduce the amount of CO elimination agent used, and it can ensure that the CO elimination suspension slurry can be evaporated more quickly by the high temperature and high pressure environment, thereby significantly improving the elimination effect and elimination efficiency of CO. At the same time, part of the slurry droplets can also be used to play a role in dust reduction and dust removal. By assembling a snap fastener on the outside of the last section of the outer shell, the end of the outer shell can be quickly closed by the snap fastener, so that the CO elimination suspension slurry can be stored in a closed space, which is beneficial to make the internal CO elimination suspension slurry evaporate more quickly and more concentratedly during the blasting process, further improving the CO elimination effect, and at the same time, it can also better play a role in dust reduction and dust reduction. An internal connection block is installed inside the hard bottom plate, which can be used to position and connect the support grid, thereby preventing the support grid from being separated from the outer shell. In addition, the support grid fixedly connected to the outer shell is conducive to promoting the fluidity of the CO2-eliminating suspension slurry in different fan-shaped cavities, further avoiding the condensation of the CO2-eliminating suspension slurry. For the first protection mechanism, the support frame is connected to the hard bottom plate through multiple support rods, and the length of the support rods can be used to isolate a longer buffer space. In this way, the CO2-eliminating slurry roll on one side of the first protection mechanism can be effectively prevented from being broken due to accidents.In addition, since the first protection mechanism is in contact with the explosive roll during the specific use process, this buffer space can be used to effectively reduce the impact force generated at the initial moment of the explosion, so as to avoid the CO elimination slurry roll being pushed away by the impact force at the initial moment of the explosion, ensuring that the high temperature and high pressure environment generated by the explosion can quickly and effectively act on the CO elimination slurry roll, causing the outer shell to rupture quickly, and causing the internal CO elimination suspension slurry to evaporate quickly, so that it can be timely and fully in contact with the generated CO gas, so that the CO elimination operation can be efficiently achieved, and the effect of CO in-situ elimination can be significantly improved. The shock-absorbing arc plate is fixedly connected to the support frame, and then the inner surface thereof is covered with a flexible cushion layer. On the one hand, the flexible cushion layer can be used to form a shorter flexible buffer space, and on the other hand, the concave space in the shock-absorbing arc plate can be used to cover the end of the explosive roll, so as to play a role in positioning the explosive roll. For the second protective structure, the connecting plate is connected to the end of the outer shell, and then the umbrella-shaped elastic frame is hinged to the connecting plate through a pin shaft. In this way, a buffer space 2 can be formed between the elastic frame with elastic deformation ability and the snap-on component, which can effectively prevent the CO elimination slurry roll on one side of the second protective mechanism from accidentally rupturing. In addition, the hinged connection method of the elastic frame can make it have a certain swing amplitude. When the outer shell is a flexible shell, the elastic frame can have better adaptability during the installation process through flexible swinging, ensuring the buffering effect of the buffer space 2. The two CO elimination slurry rolls are arranged on both sides of the explosive roll respectively. The CO elimination effect is triggered by the high temperature and high pressure conditions generated by the explosion, and thus has the ability to eliminate CO in situ, which can achieve efficient CO elimination operations under the premise of using less CO elimination agent. The CO elimination slurry roll adopted in the present invention has a double protection structure, which can not only reduce the usage of CO elimination agent, but also achieve the purpose of eliminating CO toxic and harmful gases generated by shallow hole blasting operations from the source. At the same time, it can also play a certain role in smoke elimination and dust reduction during the blasting operation, and to a certain extent achieve the trinity effect of CO elimination, smoke elimination and dust reduction in situ in the blasthole, which improves the efficiency of CO elimination operations and effectively protects the life, health and safety of workers.

[0020] The method has a simple implementation process and an ideal CO removal effect. A charge structure of a CO elimination slurry roll, an explosive roll, and a CO elimination slurry roll is formed inside the blasthole. Through the charge structure and the structure of the CO elimination slurry roll itself, the purpose of efficiently eliminating the toxic and harmful CO gas generated by the shallow hole blasting operation from the source can be fully achieved on the premise of effectively reducing the amount of CO elimination agent used. At the same time, the CO elimination suspension slurry can be used to absorb and take away the dust generated during the explosion, thereby playing a role in synchronous dust reduction. To a certain extent, the three-in-one effect of CO elimination, smoke elimination, and dust reduction can be achieved in situ in the blasthole, thereby effectively protecting the life, health, and safety of the operators.

Claims

1. A synchronous elimination method for efficient elimination of CO, using a CO elimination slurry roll (1), the CO elimination slurry roll (1) comprising an elimination slurry roll body (22) and CO elimination suspended slurry; the elimination slurry roll body (22) comprising a cylindrical outer shell (2), a hard bottom plate (3), a support grid (4), an anti-condensation ball (5), a snap-fit ​​member (6), an outer connection block (7), an inner connection block (8), a first protection mechanism (9) and a second protection mechanism (10); the outer shell (2) is a flexible shell; the hard bottom plate (3) is fixedly packaged at the head end of the outer shell (2), and a plurality of outer connection members are fixedly connected to the outer surface of the outer shell around the axis. The support grid (4) is a cross-shaped support member with leakage holes all over it, which is inserted into the inner cavity of the outer shell (2), and the center of its head end is fixedly connected to the hard bottom plate (3) through the inner connection block (8). The support grid (4) is used to support the cylindrical state of the outer shell (2) and divide the inner cavity of the outer shell (2) into four fan-shaped cavities; the anti-condensation ball (5) is a solid ball; a plurality of anti-condensation balls (5) are assembled inside the outer shell (2) and distributed in the four fan-shaped cavities; the buckle (6) is located on the outside of the end of the support grid (4) and is radially contracted and buckled on the outer shell. (2), and the end of the outer shell (2) is closed; a slurry filling space is formed between the snap-fitting member (6), the hard bottom plate (3) and the outer shell (2); the first protection mechanism (9) is arranged on the outside of the head end of the outer shell (2), and comprises a plurality of connecting support rods (11), a support frame (12) and a shock-absorbing arc plate (13); the number of the plurality of connecting support rods (11) corresponds to the number of the plurality of external connecting blocks (7), and the ends of the plurality of connecting support rods (11) are fixedly connected to the hard bottom plate (3) via the plurality of external connecting blocks (7); the end of the support frame (12) is fixedly connected to the head ends of the plurality of connecting support rods (11); The end of the shock-absorbing arc plate (13) is fixedly connected to the head end of the support frame (12), and the head end has an arc-shaped groove (1) that is recessed in the direction of the end, and the arc-shaped groove (1) is covered with a flexible cushion layer (14); the second protection mechanism (10) is arranged on the outside of the end of the outer shell (2), and comprises a connecting plate (15) and an elastic frame (16); the connecting plate (15) is fixedly connected to the end of the outer shell (2); the elastic frame (16) is umbrella-shaped, and the head end thereof is hinged to the central area of ​​the connecting plate (15) through a pin (17), and the tail end thereof has an arc-shaped groove (2) that is recessed in the direction of the head end; the CO2 elimination suspension slurry is filled in the slurry filling space; It is characterized in that The following steps are involved: Step 1: Filling operation; S11: completing the drilling operation of the blast hole (23) at the predetermined blasting position; S12: pushing the first CO2-eliminating slurry roll (1) to the bottom of the blasthole (23), and making the second protection mechanism (10) of the CO2-eliminating slurry roll (1) contact the bottom of the hole; S13: Pushing the required number of explosive rolls (24) into the blast hole one by one, while ensuring that the end of the inner explosive roll (24) contacts the shock-absorbing arc plate (13) in the first protection mechanism (9) on the first CO elimination slurry roll (1); wherein a section of the explosive roll (24) at the outer end is buried with a detonator (25), and when pushing the section of the explosive roll (24) at the outer end, ensure that the firing line (26) connected to the detonator (25) extends along the edge of the blast hole (23) to the outside of the hole mouth; S14: the second protection mechanism (10) of the second CO2 elimination slurry roll (1) is moved close to one side of the hole bottom, and then the second CO2 elimination slurry roll (1) is pushed into the blast hole (23), while ensuring that the shock absorbing arc plate (13) in the first protection mechanism (9) of the second CO2 elimination slurry roll (1) is in contact with the end of the outer end explosive roll (24); S15: using yellow mud (27) to block the blasthole (23), so that a charging structure of the order of CO2 elimination slurry roll (1) - explosive roll (24) - CO2 elimination slurry roll (1) is formed inside the blasthole (23), and the charging operation of the blasthole (23) is completed; Step 2: CO elimination operation; S21: After the filling operation of the blasthole (23) is completed, the blast line (26) is led out, and then the personnel are evacuated to the outside of the safe area, and then the blast line (26) is used to detonate the detonator (25), and the explosive roll (24) is detonated by the detonator (25); S22: utilizing the high temperature and high pressure generated by the explosion of the explosives to act on the CO elimination slurry volume (1), so that the CO elimination suspension slurry evaporates and fully contacts the CO poisonous gas, thereby achieving the CO elimination operation. At the same time, utilizing part of the droplets of the CO elimination suspension slurry to carry away part of the dust, thereby achieving dust reduction and reduction operations while achieving the CO elimination operation.

2. A synchronous elimination method for efficient CO elimination according to claim 1, characterized in that: The supporting grid (4) comprises a first grid (18) and a second grid (19); The lengths of the first grille (18) and the second grille (19) are both shorter than the length of the outer shell (2), and the widths of both are shorter than the inner diameter of the outer shell (2); a strip groove (20) is provided in the central area of ​​the first grille (18) in the width direction along the length direction for the second grille (19) to pass through; the middle section of the second grille (19) in the width direction is inserted into the strip groove (20) and is perpendicular to the first grille (18); The leakage holes on the first grille (18) are a plurality of rectangular holes distributed over its surface, a connecting shaft (21) is fixedly connected to the center of its head end, and is fixedly connected to the inner connecting block (8) via the connecting shaft (21); the leakage holes on the second grille (19) are a plurality of circular holes distributed over its surface.

3. A synchronous elimination method for efficient CO elimination according to claim 1, characterized in that: The outer shell (2) is made of flame-retardant material; the shock-absorbing arc plate (13) is made of flame-retardant material, and a plurality of circular dispersed holes are provided on the surface of the shock-absorbing arc plate (13) and the flexible cushion layer (14); the connecting support rod (11) is a rigid rod member, which is made of flame-retardant material.

4. A synchronous elimination method for efficient CO elimination according to claim 3, characterized in that: The preparation method of the CO elimination suspension slurry is as follows: A1: preparing a first suspension; firstly synthesizing a high-efficiency CO eliminator by a hydrothermal method, a coprecipitation method or a microscopic morphology control method, wherein the CO eliminator is a transition metal oxide composed of one or more elements of iron, copper, manganese and cerium; then grinding the CO eliminator into fine powder, then adding a liquid inorganic mineral binder thereto, and fully stirring the powder into a slurry to form a first suspension; A2: preparing a second suspension; stirring and dispersing the prepared first suspension, and adding a surfactant dropwise thereto, and stirring sufficiently after the addition to form a second suspension; A3: Preparation of CO elimination suspension slurry; A set amount of deionized water and an auxiliary solvent are added to the second suspension, and then stirred and dispersed for a second time to form a CO elimination suspension slurry.

5. A synchronous elimination method for efficient CO elimination according to claim 4, characterized in that: In A1, the particle size of the CO eliminator is 0.01-0.075 mm, and its mass concentration is 1%-15%, based on the total mass of the CO eliminator suspension slurry; the liquid inorganic mineral binder component is one or more silicate materials, and the mass ratio of the CO eliminator to the liquid inorganic mineral binder is 1:1-1.4; in A2, the surfactant is a non-ionic surfactant, and the mass concentration of the surfactant is 0.0001%-0.03%, based on the total mass of the CO eliminator suspension slurry; in A3, the auxiliary solvent is one of the organic acid salts, and the volume ratio of deionized water to the auxiliary solvent is 20-35:1.

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