Unqualified expanded ammonium nitrate explosive recycling device

Abstract

The utility model relates to the technical field of expanded ammonium nitrate explosive production devices, in particular to a recovery device for unqualified expanded ammonium nitrate explosives, and aims to solve the problems that impurities such as explosives swept out from a bottom plate are mixed into the explosives, the water content exceeds the standard, and a solution containing ammonium nitrate explosives generated by flushing equipment cannot be reused. According to the characteristic that the expanded ammonium nitrate explosive is soluble in water, the dissolving tank is arranged, unqualified products and water are heated and dissolved in the dissolving tank, the solution is primarily purified through the filtering device, for example, wood flour floats on the upper layer of the solution, then the solution is filtered again through the gravel filter, and the wood flour and other impurities are basically filtered thoroughly; the solution filtered twice is collected in a storage tank for later use, and the component proportion can be recalculated after ammonium nitrate concentration test.

Description

Technical Field

[0001] The utility model relates to the technical field of expanded ammonium nitrate explosive production devices, in particular to a device for recovering unqualified expanded ammonium nitrate explosives. Background Art

[0002] Expanded ammonium nitrate explosives are mainly composed of ammonium nitrate, compound wax, and wood powder, wherein the melting point of the compound wax drop is below 80°C, the wood powder fineness is required to pass through a 40-mesh sieve, and the particle size is within 0.38mm. The preparation process of expanded ammonium nitrate explosives is: the ammonium nitrate solution and the compound oil phase solution are transported to a dynamic mixer through a pipeline for mixing, and then transported to an expansion crystallizer through a pipeline for vacuum drying and expansion to obtain an expanded ammonium oil mixture, and then the wood powder is added and mixed to obtain expanded ammonium nitrate explosives.

[0003] At present, domestic expanded ammonium nitrate explosive production lines produce defective products during production, which are generally processed and recycled in a special workshop for defective products. However, when impurities are mixed into the explosives (such as explosives swept from the floor), the water content is seriously exceeded, and the solution containing ammonium nitrate explosives produced by the washing equipment cannot be reused, according to the characteristics of expanded ammonium nitrate explosives that are soluble in water, they are generally not reprocessed in the processing workshop. The reused part can only be destroyed in the oil separation sedimentation tank using the water dissolution method. This causes a waste of raw materials and is also likely to cause the discharged wastewater to exceed the ammonia nitrogen standard and cause pollution to the environment. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a device for recovering unqualified expanded ammonium nitrate explosives, to process and recycle the solution containing ammonium nitrate explosives mixed with impurities, exceeding the water content or generated by flushing equipment, so as to reduce the waste of raw materials and the pollution to the environment.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A device for recovering unqualified expanded ammonium nitrate explosives, comprising:

[0007] A dissolving tank, wherein a filtering device is provided in the dissolving tank;

[0008] A feed pipe, the end of which is connected to the dissolving tank and is used to introduce unqualified expanded ammonium nitrate explosives into the dissolving tank;

[0009] A hot water pipe, the end of which is connected to the dissolution tank and is used to introduce hot water into the dissolution tank;

[0010] A sand and gravel filter, wherein the sand and gravel filter is arranged below the dissolution tank;

[0011] A first connecting pipe, wherein the upper end of the first connecting pipe is connected to the lower part of the dissolution tank, and the lower end of the first connecting pipe is connected to the upper part of the sand filter;

[0012] a first valve, the first valve being connected to a first connecting pipe;

[0013] A storage tank, wherein the storage tank is arranged below the sand filter;

[0014] A second connecting pipe, wherein the upper end of the second connecting pipe is connected to the lower part of the sand filter, and the lower end of the second connecting pipe is connected to the storage tank.

[0015] Furthermore, in the structure of the above-mentioned expanded ammonium nitrate explosive defective product recovery device, the side branch of the first connecting pipe is connected to the first sewage pipe, the first sewage pipe is connected to the third valve, the side branch of the second connecting pipe is connected to the flushing water inlet pipe, and the flushing water inlet pipe is connected to the fourth valve.

[0016] Furthermore, the above-mentioned expanded ammonium nitrate explosive defective product recovery device structure also includes:

[0017] Dynamic mixer;

[0018] A material conveying pipeline, wherein the starting end of the material conveying pipeline is connected to the lower part of the storage tank, and the end of the material conveying pipeline is connected to the dynamic mixer;

[0019] A water phase pipeline, the end of which is connected to a material conveying pipeline;

[0020] A metering pump is connected to a material conveying pipeline.

[0021] Furthermore, in the structure of the device for recovering defective expanded ammonium nitrate explosives, a second sewage pipe is connected to the lower part of the storage tank, and a fifth valve is connected to the second sewage pipe.

[0022] Furthermore, in the structure of the above-mentioned expanded ammonium nitrate explosive defective product recovery device, a blocking and dispersing plate is provided above the interior of the sand and gravel filter.

[0023] Furthermore, in the structure of the above-mentioned expanded ammonium nitrate explosive defective product recovery device, the filter device is in the shape of a frame-shaped filter screen, and the pore size of the filter screen is 40 meshes.

[0024] Furthermore, in the structure of the above-mentioned expanded ammonium nitrate explosive defective product recovery device, the sand and gravel filter is provided with an upper layer of sand and gravel and a lower layer of sand and gravel, the particle size of the upper layer of sand and gravel is 0.3-0.5 mm; the particle size of the upper layer of sand and gravel is 0.1-0.3 mm.

[0025] Furthermore, in the structure of the above-mentioned expanded ammonium nitrate explosive defective product recovery device, the storage tank is connected to a heating and heat preservation device.

[0026] Furthermore, in the structure of the above-mentioned expanded ammonium nitrate explosive defective product recovery device, the material conveying pipeline is connected to a material filter, and the filter aperture of the material filter is 80 meshes.

[0027] The beneficial effect of the utility model is that in the structure of the device for recovering unqualified expanded ammonium nitrate explosives involved in the utility model, in order to solve the problem that impurities are mixed into explosives, such as explosives swept out from the bottom plate, water content exceeds the standard, and the solution containing ammonium nitrate explosives produced by the flushing equipment cannot be reused, according to the property that expanded ammonium nitrate explosives are soluble in water, a dissolving tank is set, unqualified products and water are heated and dissolved in the dissolving tank, and the solution is preliminarily impurity-removed by a filtering device, for example, wood powder will float on the upper layer of the solution, and then it is filtered again by a sand and gravel filter, and the impurities such as wood powder are basically filtered out, and the solution after two filtrations is collected in a storage tank for standby use, and the component distribution ratio can be recalculated after the ammonium nitrate concentration test. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of a device for recovering unqualified expanded ammonium nitrate explosives according to a specific implementation method of the utility model;

[0029] Description of labels:

[0030] 1. Dissolving tank; 101. Filtering device;

[0031] 2. Feed pipeline;

[0032] 3. Hot water pipes;

[0033] 4. Sand filter; 41. Blocking dispersion plate;

[0034] 5. first connecting pipe; 51. first valve;

[0035] 6. Second connecting pipe; 61. Second valve;

[0036] 7. The first sewage pipe; 71. The third valve;

[0037] 8. Flush the water inlet pipe; 81. The fourth valve;

[0038] 9. Dynamic mixer;

[0039] 10. Storage tanks;

[0040] 11. Material conveying pipeline; 111. Metering pump; 112. Material filter;

[0041] 12. Water phase pipeline;

[0042] 13. Second sewage pipe; 131. Fifth valve. DETAILED DESCRIPTION

[0043] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0044] Please refer to Figure 1 The specific implementation of the utility model relates to a device for recovering unqualified expanded ammonium nitrate explosives, comprising:

[0045] A dissolving tank 1, wherein a filtering device 101 is provided in the dissolving tank 1;

[0046] A feed pipe 2, the end of which is connected to the dissolving tank 1, and is used to introduce unqualified expanded ammonium nitrate explosives into the dissolving tank 1;

[0047] A hot water pipe 3, the end of which is connected to the dissolution tank 1, and is used to introduce hot water into the dissolution tank 1;

[0048] A sand filter 4, wherein the sand filter 4 is arranged below the dissolution tank 1;

[0049] A first connecting pipe 5, wherein the upper end of the first connecting pipe 5 is connected to the lower part of the dissolution tank 1, and the lower end of the first connecting pipe 5 is connected to the upper part of the sand filter 4;

[0050] A first valve 51, wherein the first valve 51 is connected to the first connecting pipe 5;

[0051] A storage tank 10, wherein the storage tank 10 is arranged below the sand filter 4;

[0052] A second connecting pipe 6 , the upper end of which is connected to the lower part of the sand filter 4 , and the lower end of which is connected to the storage tank 10 .

[0053] The working principle of the above embodiment is as follows: first, all valves are closed, and the unqualified expanded ammonium nitrate explosive enters the dissolution tank 1 through the feed pipe 2, and then 80°C hot water is added to the dissolution tank 1 through the water inlet pipe to fully dissolve the unqualified expanded ammonium nitrate explosive. At this time, light insoluble impurities such as wood powder will float on the liquid surface, and other insoluble impurities will be filtered by the filtering device 101; then the first valve 51 is opened to allow the filtered solution to flow into the sand and gravel filter 4. After the sand and gravel are filtered, the second valve 61 is opened to allow the solution after the sand and gravel filtration to flow into the storage tank 10 for standby use.

[0054] In the above embodiment, in order to solve the problem that the explosives are mixed with impurities, such as the explosives swept out from the bottom plate, the water content exceeds the standard, and the solution containing ammonium nitrate explosives produced by the flushing equipment cannot be reused, according to the characteristic of expanded ammonium nitrate explosive being soluble in water, a dissolving tank 1 is provided, and the unqualified products and water are heated and dissolved in the dissolving tank 1, and the solution is preliminarily removed of impurities by a filtering device 101, for example, wood powder will float on the upper layer of the solution, and then it is filtered again by a sand and gravel filter 4, and the impurities such as wood powder are basically filtered out. After the solution is filtered twice, it is collected in a storage tank 10 for standby use, and the component distribution ratio can be recalculated after the ammonium nitrate concentration test.

[0055] As a preferred embodiment, the side branch of the first connecting pipe 5 is connected to the first sewage pipe 7, and the first sewage pipe 7 is connected to the third valve 71. The side branch of the second connecting pipe 6 is connected to the flushing water inlet pipe 8, and the flushing water inlet pipe 8 is connected to the fourth valve 81.

[0056] In the above embodiment, the working principle also includes: regularly closing the first valve 51 and the second valve 61, opening the third valve 71 and the fourth valve 81, so that clean water enters the sand filter 4 through the flushing water inlet pipe 8, backwashes the sand filter 4, and then discharges it through the first sewage pipe 7.

[0057] As a preferred embodiment, it also includes:

[0058] Dynamic mixer 9;

[0059] A material conveying pipeline 11, wherein the starting end of the material conveying pipeline 11 is connected to the lower part of the storage tank 10, and the end of the material conveying pipeline 11 is connected to the dynamic mixer 9;

[0060] A water phase pipeline 12, the end of which is connected to the material conveying pipeline 11;

[0061] A metering pump 111 , wherein the metering pump 111 is connected to the material conveying pipeline 11 .

[0062] As a preferred embodiment, a second sewage pipe 13 is connected to the lower portion of the storage tank 10 , and a fifth valve 131 is connected to the second sewage pipe 13 .

[0063] As a preferred embodiment, a blocking and dispersing plate 41 is provided above the interior of the sand and gravel filter 4. When the solution enters the top of the sand and gravel filter 4 from the dissolution tank 1, the blocking and dispersing plate 41 disperses the solution and distributes it more evenly in the sand and gravel layer.

[0064] As a preferred embodiment, the filtering device 101 is in the shape of a frame-shaped filter screen, and the pore size of the filter screen is 40 meshes.

[0065] As a preferred embodiment, the sand filter 4 is provided with an upper layer of sand and a lower layer of sand, the particle size of the upper layer of sand is 0.3-0.5 mm; the particle size of the lower layer of sand is 0.1-0.3 mm.

[0066] As a preferred embodiment, the storage tank 10 is connected to a heating and heat preservation device, and the heat preservation temperature is controlled at 125±5°C.

[0067] As a preferred implementation, the material conveying pipeline 11 is connected to a material filter 112, and the filter aperture of the material filter 112 is 80 meshes.

[0068] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A device for recovering unqualified expanded ammonium nitrate explosives, characterized in that: include: A dissolving tank, wherein a filtering device is provided in the dissolving tank; A feed pipe, the end of which is connected to the dissolving tank and is used to introduce unqualified expanded ammonium nitrate explosives into the dissolving tank; A hot water pipe, the end of which is connected to the dissolution tank and is used to introduce hot water into the dissolution tank; A sand and gravel filter, wherein the sand and gravel filter is arranged below the dissolution tank; A first connecting pipe, wherein the upper end of the first connecting pipe is connected to the lower part of the dissolution tank, and the lower end of the first connecting pipe is connected to the upper part of the sand filter; a first valve connected to a first connecting pipe; A storage tank, wherein the storage tank is arranged below the sand filter; A second connecting pipe, wherein the upper end of the second connecting pipe is connected to the lower part of the sand filter, and the lower end of the second connecting pipe is connected to the storage tank.

2. The device for recovering unqualified expanded ammonium nitrate explosives according to claim 1, characterized in that: The side branch of the first connecting pipe is connected to a first sewage pipe, and the first sewage pipe is connected to a third valve. The side branch of the second connecting pipe is connected to a flushing water inlet pipe, and the flushing water inlet pipe is connected to a fourth valve.

3. The device for recovering unqualified expanded ammonium nitrate explosive according to claim 1, characterized in that: Also includes: Dynamic mixer; A material conveying pipeline, wherein the starting end of the material conveying pipeline is connected to the lower part of the storage tank, and the end of the material conveying pipeline is connected to the dynamic mixer; A water phase pipeline, the end of which is connected to a material conveying pipeline; A metering pump is connected to a material conveying pipeline.

4. The device for recovering unqualified expanded ammonium nitrate explosives according to claim 3, characterized in that: The lower part of the storage tank is connected with a second sewage pipe, and the second sewage pipe is connected with a fifth valve.

5. The device for recovering unqualified expanded ammonium nitrate explosive according to claim 1, characterized in that: A blocking and dispersing plate is arranged above the interior of the sand filter.

6. The device for recovering unqualified expanded ammonium nitrate explosives according to claim 1, characterized in that: The filter device is in the shape of a frame-shaped filter screen, and the aperture of the filter screen is 40 meshes.

7. The device for recovering unqualified expanded ammonium nitrate explosive according to claim 1, characterized in that: The sand and gravel filter is provided with an upper layer of sand and gravel and a lower layer of sand and gravel, wherein the particle size of the upper layer of sand and gravel is 0.3-0.5 mm; and the particle size of the lower layer of sand and gravel is 0.1-0.3 mm.

8. The device for recovering unqualified expanded ammonium nitrate explosive according to claim 1, characterized in that: The storage tank is connected with a heating and heat preservation device.

9. The device for recovering unqualified expanded ammonium nitrate explosives according to claim 3, characterized in that: The material conveying pipeline is connected with a material filter, and the filter aperture of the material filter is 80 meshes.

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