A clay-based calcium cluster bullet and a manufacturing method thereof

Abstract

The present invention discloses a novel clay-based calcium cluster bullet and a manufacturing method thereof. The raw materials of the novel clay-based calcium cluster bullet include: clay material, calcium gelling material, admixture and water. The clay material is completely dried engineering waste soil. The admixture includes: waterproof material, chopped fiber, and permeable liquid hardener material. The slurry after weighing and stirring is added to an extrusion molding device to extrude into a novel clay-based calcium cluster bullet and perform indoor curing, water immersion curing or carbonization curing. Since the raw materials used in the present invention are cheap and easy to obtain, the production cost is reduced, and the technical problem of efficient and high value-added resource utilization of engineering waste soil is effectively solved, and the dud bullets cause little harm to civilians after the war.

Description

Technical Field

[0001] The invention relates to a recycled aggregate and a manufacturing technology thereof, and in particular to a novel clay-based calcium cluster bullet and a manufacturing method thereof. Background Art

[0002] Cluster munitions refer to explosive submunitions (small, unguided explosives or bomblets) that are scattered or released, each weighing less than 20kg, and are designed to explode on or after impact. Cluster munitions cannot avoid the problem of misfires during use. Reducing the unexploded bomb rate of cluster munitions and reducing the damage caused by cluster munitions after the war have become one of the hot issues that the international community is generally concerned about. However, the unexploded bomb rate of most cluster munitions at home and abroad is generally greater than 1%, and it is necessary to improve the technical route of existing cluster munition design. Summary of the invention

[0003] Aiming at the technical problem that the unexploded bomb rate of cluster munitions is generally greater than 1%, the present invention proposes a novel clay-based calcium cluster bullet.

[0004] The invention provides a novel clay-based calcium cluster bullet. The novel clay-based calcium cluster bullet comprises the following raw materials in parts by weight: 60.1-60.5 parts of a clay base material, 14.8-14.9 parts of a calcium gelling material, 0.6-1.1 parts of an admixture, and 24.0-24.1 parts of water.

[0005] Furthermore, the clay base material is completely dried engineering waste soil, and the completely dried engineering waste soil is the residual mud after separation of engineering slag and sand, which is completely dried and crushed into powder particles with a particle size of less than 2.36 mm.

[0006] Furthermore, the calcareous cementitious material is ordinary Portland cement, dihydrate gypsum, and quicklime powder. The strength grade of the ordinary Portland cement is 42.5, and the particle size of the quicklime powder is less than 1.18 mm.

[0007] Furthermore, the admixture includes: waterproof material, chopped fibers, and penetrating liquid hardener material.

[0008] Furthermore, the waterproof material is a powdered flexible cement-based waterproof material purchased from the market, the chopped fibers are 3 mm polypropylene fibers, and the penetrating liquid hardener material is purchased from the market.

[0009] Furthermore, the water is groundwater or surface water.

[0010] A method for manufacturing the novel clay-based calcium cluster bullet, the method comprising the following steps:

[0011] S1. Weigh the raw materials of the novel clay-based calcium cluster bullet according to the designed ratio, wherein the clay base material is weighed in two portions, with the mass percentages of the first portion and the second portion being 70% and 30% respectively, and the weighed calcium gelling material is added to the first portion of the clay material and stirred, and then the second portion of the clay base material is added and the weighed admixture and water are added and stirred;

[0012] S2, adding the stirred mixture to a novel clay-based calcium cluster bullet extrusion molding device to extrude the novel clay-based calcium cluster bullet;

[0013] S3. Carry out indoor curing and water immersion curing on the new clay-based calcium cluster bullets.

[0014] Furthermore, the new clay-based calcium cluster bullet has a diameter of 10 mm and a length of 60 mm.

[0015] Furthermore, the crushing index of the new clay-based calcium cluster bullet is less than 30%.

[0016] Furthermore, during carbonization curing, the novel clay-based calcium cluster bullet is placed in a carbonization reactor for curing, and the carbonization curing conditions are: temperature 20° C., relative humidity 50%, and CO2 pressure in the reactor of 0.05 MPa.

[0017] The present invention adopts extrusion molding technology to efficiently utilize engineering waste soil as resources, and mass-produces low-cost new clay-based calcium cluster bullets. Since the clay-based material used is cheap and easy to obtain, it not only improves the design concept of cluster munition bullets, but also changes the explosive bullets in cluster munitions into non-explosive bullets that only rely on gravity and physical shape to attack targets, effectively solving the technical problem that the unexploded rate of cluster munitions is generally greater than 1%, and effectively improves the resource utilization rate and added value of engineering waste soil; the produced new clay-based calcium cluster bullets can also be recycled and reused after being discarded, which significantly reduces the cost of cluster munitions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of a new type of clay-based calcium cluster bullet. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0020] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0021] Example 1

[0022] The novel clay-based calcium cluster bullet of this embodiment comprises the following raw materials in parts by weight: 60.5 parts of completely dried engineering waste soil, 7.5 parts of 42.5-grade ordinary Portland cement, 3.7 parts of dihydrate gypsum, 3.7 parts of quicklime powder, 0.2 parts of waterproof material, 0.4 parts of 3mm polypropylene fiber, and 24.1 parts of water. The completely dried engineering waste soil is the powder particles of the residual mud after the separation of mud and sand from engineering slag, which is completely dried and crushed, and has a particle size of less than 2.36 mm. The particle size of the quicklime powder is less than 1.18 mm. The waterproof material is a powdery and flexible cement-based waterproof material purchased on the market. The raw materials of the new clay-based calcium cluster bullet are weighed according to the designed ratio. The clay base material is weighed in two portions, and the mass percentages of the first portion and the second portion are 70% and 30% respectively. The weighed calcium cementitious material is added to the first portion of the clay material and stirred. Then the second portion of the clay base material is added and the weighed admixture and water are added and stirred. The stirred mixture is added to the new clay-based calcium cluster bullet extrusion molding equipment to extrude the new clay-based calcium cluster bullet. The new clay-based calcium cluster bullet is placed in an indoor environment for indoor maintenance. The aggregate produced by the extrusion molding equipment is as follows: Figure 1 As shown, the diameter is 10 mm and the length is 60 mm. The crushing index test results of the new clay-based calcium cluster bullet are shown in Table 1.

[0023] Example 2

[0024] The novel clay-based calcium cluster bullet of this embodiment comprises the following raw materials in parts by weight: 60.1 parts of completely dried engineering waste soil, 7.4 parts of 42.5-grade ordinary Portland cement, 3.7 parts of dihydrate gypsum, 3.7 parts of quicklime powder, 0.2 parts of waterproof material, 0.2 parts of 3mm polypropylene fiber, 0.7 parts of penetrating liquid hardener material, and 24.0 parts of water. The completely dried engineering waste soil is the powder particles of the residual mud after the separation of mud and sand from engineering debris, which is completely dried and crushed, and has a particle size of less than 2.36 mm. The quicklime powder has a particle size of less than 1.18 mm. The waterproof material is a powdered flexible cement-based waterproof material purchased from the market, and the penetrating liquid hardener material is purchased from the market. The raw materials of the new clay-based calcium cluster bullet are weighed according to the designed ratio. The clay base material is weighed in two portions, and the mass percentages of the first portion and the second portion are 70% and 30% respectively. The weighed calcium cementitious material is added to the first portion of the clay material and stirred. Then the second portion of the clay base material is added and the weighed admixture and water are added and stirred. The stirred mixture is added to the new clay-based calcium cluster bullet extrusion molding equipment to extrude the new clay-based calcium cluster bullet. The new clay-based calcium cluster bullet is placed in an indoor environment for indoor maintenance. The aggregate produced by the extrusion molding equipment is as follows: Figure 1 As shown, the diameter is 10 mm and the length is 60 mm. The crushing index test results of the new clay-based calcium cluster bullet are shown in Table 1.

[0025] Example 3

[0026] The novel clay-based calcium cluster bullet of this embodiment comprises the following raw materials in parts by weight: 60.5 parts of completely dried engineering waste soil, 7.5 parts of 42.5-grade ordinary Portland cement, 3.7 parts of dihydrate gypsum, 3.7 parts of quicklime powder, 0.2 parts of waterproof material, 0.4 parts of 3mm polypropylene fiber, and 24.1 parts of water. The completely dried engineering waste soil is the powder particles of the residual mud after the separation of mud and sand from engineering slag, which is completely dried and crushed, and has a particle size of less than 2.36 mm. The particle size of the quicklime powder is less than 1.18 mm. The waterproof material is a powdery and flexible cement-based waterproof material purchased on the market. The raw materials of the new clay-based calcium cluster bullet are weighed according to the designed ratio. The clay base material is weighed in two portions, and the mass percentages of the first portion and the second portion are 70% and 30% respectively. The weighed calcium cementitious material is added to the first portion of the clay material and stirred. Then the second portion of the clay base material is added and the weighed admixture and water are added and stirred. The stirred mixture is added to the new clay-based calcium cluster bullet extrusion molding equipment to extrude the new clay-based calcium cluster bullet. The new clay-based calcium cluster bullet is placed in a carbonization reactor for carbonization curing. The carbonization curing conditions are: temperature of 20°C, relative humidity of 50%, and CO2 pressure in the reactor of 0.05MPa. Aggregates produced by the extrusion molding equipment are as follows: Figure 1As shown, the diameter is 10 mm and the length is 60 mm. The crushing index test results of the new clay-based calcium cluster bullet are shown in Table 1.

[0027] Example 4

[0028] The novel clay-based calcium cluster bullet of this embodiment comprises the following raw materials in parts by weight: 60.1 parts of completely dried engineering waste soil, 7.4 parts of 42.5-grade ordinary Portland cement, 3.7 parts of dihydrate gypsum, 3.7 parts of quicklime powder, 0.2 parts of waterproof material, 0.2 parts of 3mm polypropylene fiber, 0.7 parts of penetrating liquid hardener material, and 24.0 parts of water. The completely dried engineering waste soil is the powder particles of the residual mud after the separation of mud and sand from engineering debris, which is completely dried and crushed, and has a particle size of less than 2.36 mm. The quicklime powder has a particle size of less than 1.18 mm. The waterproof material is a powdered flexible cement-based waterproof material purchased from the market, and the penetrating liquid hardener material is purchased from the market. The raw materials of the new clay-based calcium cluster bullet are weighed according to the designed ratio. The clay base material is weighed in two portions, and the mass percentages of the first portion and the second portion are 70% and 30% respectively. The weighed calcium cementitious material is added to the first portion of the clay material and stirred. Then the second portion of the clay base material is added and the weighed admixture and water are added and stirred. The stirred mixture is added to the new clay-based calcium cluster bullet extrusion molding equipment to extrude the new clay-based calcium cluster bullet. The new clay-based calcium cluster bullet is placed in a carbonization reactor for carbonization curing. The carbonization curing conditions are: temperature of 20°C, relative humidity of 50%, and CO2 pressure in the reactor of 0.05MPa. Aggregates produced by the extrusion molding equipment are as follows: Figure 1 As shown, the diameter is 10 mm and the length is 60 mm. The crushing index test results of the new clay-based calcium cluster bullet are shown in Table 1.

[0029] Example 5

[0030] The novel clay-based calcium cluster bullet of this embodiment comprises the following raw materials in parts by weight: 60.5 parts of completely dried engineering waste soil, 7.5 parts of 42.5-grade ordinary Portland cement, 3.7 parts of dihydrate gypsum, 3.7 parts of quicklime powder, 0.2 parts of waterproof material, 0.4 parts of 3mm polypropylene fiber, and 24.1 parts of water. The completely dried engineering waste soil is the powder particles of the residual mud after the separation of mud and sand from engineering slag, which is completely dried and crushed, and has a particle size of less than 2.36 mm. The particle size of the quicklime powder is less than 1.18 mm. The waterproof material is a powdery and flexible cement-based waterproof material purchased on the market. The raw materials of the new clay-based calcium cluster bullet are weighed according to the designed ratio. The clay base material is weighed in two portions, and the mass percentages of the first portion and the second portion are 70% and 30% respectively. The weighed calcium cementitious material is added to the first portion of the clay material and stirred. Then the second portion of the clay base material is added and the weighed admixture and water are added and stirred. The stirred mixture is added to the new clay-based calcium cluster bullet extrusion molding equipment to extrude the new clay-based calcium cluster bullet. The new clay-based calcium cluster bullet is placed in water for immersion curing. The aggregate produced by the extrusion molding equipment is as follows: Figure 1 As shown, the diameter is 10 mm and the length is 60 mm. The crushing index test results of the new clay-based calcium cluster bullet are shown in Table 1.

[0031] Example 6

[0032] The novel clay-based calcium cluster bullet of this embodiment comprises the following raw materials in parts by weight: 60.1 parts of completely dried engineering waste soil, 7.4 parts of 42.5-grade ordinary Portland cement, 3.7 parts of dihydrate gypsum, 3.7 parts of quicklime powder, 0.2 parts of waterproof material, 0.2 parts of 3mm polypropylene fiber, 0.7 parts of penetrating liquid hardener material, and 24.0 parts of water. The completely dried engineering waste soil is the powder particles of the residual mud after the separation of mud and sand from engineering debris, which is completely dried and crushed, and has a particle size of less than 2.36 mm. The quicklime powder has a particle size of less than 1.18 mm. The waterproof material is a powdered flexible cement-based waterproof material purchased from the market, and the penetrating liquid hardener material is purchased from the market. The raw materials of the new clay-based calcium cluster bullet are weighed according to the designed ratio. The clay base material is weighed in two portions, and the mass percentages of the first portion and the second portion are 70% and 30% respectively. The weighed calcium cementitious material is added to the first portion of the clay material and stirred. Then the second portion of the clay base material is added and the weighed admixture and water are added and stirred. The stirred mixture is added to the new clay-based calcium cluster bullet extrusion molding equipment to extrude the new clay-based calcium cluster bullet. The new clay-based calcium cluster bullet is placed in water for immersion curing. The aggregate produced by the extrusion molding equipment is as follows: Figure 1 As shown, the diameter is 10 mm and the length is 60 mm. The crushing index test results of the new clay-based calcium cluster bullet are shown in Table 1.

[0033] Table 1 Test results of crushing index of new clay-based calcium cluster bullet

[0034]

[0035] The novel clay-based calcium cluster bullet of the present invention is formed in one piece by adding calcium cementitious materials, admixtures and water and utilizing extrusion technology. It has the advantages of fast forming, low manufacturing cost and no waste of raw materials during the forming process. It significantly reduces the unexploded rate of cluster munitions and the humanitarian hazards caused by the unexploded cluster munitions. At the same time, it fully utilizes engineering waste soil to be made into cluster bullets that can meet military needs, thus realizing efficient and high value-added resource utilization of engineering waste soil.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that after reading the specification of this application, the technicians can still modify or replace the specific implementation mode of the present invention with equivalents, but these modifications or changes do not deviate from the scope of protection of the pending claims of the present application.

Claims

1. A clay-based calcium cluster bullet, characterized in that: The clay-based calcium cluster bullet comprises the following raw materials in parts by weight: 60.1-60.5 parts of clay base material, 14.8-14.9 parts of calcium gelling material, 0.6-1.1 parts of admixture, and 24.0-24.1 parts of water; The clay base material is completely dried engineering spoil, which is the residual mud after separation of engineering slag and sand, completely dried and crushed into powder particles, with a particle size of less than 2.36 mm; The admixture includes: waterproof material, chopped fibers, and penetrating liquid hardener material; The waterproof material is a powdered flexible cement-based waterproof material purchased from the market, the chopped fibers are 3 mm polypropylene fibers, and the penetrating liquid hardener material is purchased from the market; The method for manufacturing clay-based calcium cluster bullets comprises the following steps: S1. Weigh the raw materials of clay-based calcium cluster bullets according to the designed ratio, wherein the clay-based material is weighed in two portions, with the mass percentages of the first portion and the second portion being 70% and 30% respectively, and the weighed calcium gelling material is added to the first portion of the clay-based material and stirred, and then the second portion of the clay-based material is added and the weighed admixture and water are added and stirred; S2, adding the stirred mixture into a clay-based calcium cluster bullet extrusion molding device to extrude the clay-based calcium cluster bullet; S3. Maintain the clay-based calcium cluster bullets.

2. A clay-based calcium cluster bullet according to claim 1, characterized in that: The calcareous cementitious material consists of ordinary Portland cement, dihydrate gypsum and quicklime powder. The strength grade of the ordinary Portland cement is 42.5, and the particle size of the quicklime powder is less than 1.18 mm.

3. A clay-based calcium cluster bullet according to claim 1, characterized in that: The water is groundwater or surface water.

4. The clay-based calcium cluster bullet according to claim 1, characterized in that: The curing includes indoor curing, water immersion curing or carbonization curing.

5. The clay-based calcium cluster bullet according to claim 1, characterized in that: The clay-based calcium cluster bullet has a diameter of 10 mm and a length of 60 mm.

6. The clay-based calcium cluster bullet according to claim 1, characterized in that: The crushing index of the clay-based calcium cluster bullet is less than 30%.

7. The clay-based calcium cluster bullet according to claim 4, characterized in that: During carbonization curing, the clay-based calcium cluster bullet is placed in a carbonization reactor for curing, and the carbonization curing conditions are: temperature 20° C., relative humidity 50%, and CO2 pressure in the reactor of 0.05 MPa.

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