Smokeless odorless firework oxidant

Abstract

The invention discloses a smokeless and odorless firework oxidant which is prepared from the following components: zirconium dioxide, hafnium dioxide, silicon dioxide, manganese dioxide, iron oxide, arsenic trioxide and calcium oxide. Wherein the weight ratio of zirconium dioxide is not less than 90%; all the components are mixed, calcined and then subjected to wet ball milling, and a powdery material is obtained. The firework oxidizing agent is suitable for firework firework compositions, can be widely applied to firework spraying compositions and launching compositions, and is smokeless and odorless during combustion; the firework oxidant is not easy to decompose, good in stability, zero in friction sensitivity and impact sensitivity and suitable for high-automation-degree production, and the safety risk of production and transportation is greatly reduced.

Description

Technical Field

[0001] The invention relates to a fireworks oxidant. Background Art

[0002] Currently, potassium perchlorate is the primary oxidant used in fireworks. To reduce smoke, some fireworks use ammonium perchlorate. For example, cold-light sprays typically use a combination of ammonium perchlorate, a single-base powder, and titanium powder. However, ammonium perchlorate can have a strong odor, which detracts from the viewing experience.

[0003] To this end, we have developed a new oxidant for use in fireworks, named "Taioxan powder" (formerly known as "Carbon Oxygen Powder"). Taioxan powder is primarily composed of zirconium dioxide, a zirconium oxide with the chemical formula ZrO2. Normally, it appears as white, odorless, and tasteless crystals that are insoluble in water, hydrochloric acid, and dilute sulfuric acid. It is chemically inert and possesses a high melting point, high resistivity, high refractive index, and low thermal expansion coefficient. Currently, it is primarily used as a raw material for high-temperature resistant materials, ceramic insulation materials, ceramic sunscreens, and artificial diamonds. A search has not yet uncovered any previous uses of zirconium dioxide as a fireworks oxidant. Summary of the Invention

[0004] The present invention aims to provide a novel fireworks oxidizer that produces no odor or smoke during combustion. The technical solution employed in this invention is a smokeless and odorless fireworks oxidizer composed of the following components: zirconium dioxide, hafnium dioxide, silicon dioxide, manganese dioxide, iron oxide, arsenic trioxide, and calcium oxide; zirconium dioxide accounts for no less than 90% by weight. The components are mixed, calcined, and then wet-ball-milled to produce a powdered material.

[0005] Preferably, the particle size of the powdery material is not greater than 400 mesh.

[0006] Preferably, the mass percentage of each component is: zirconium oxide 93.5% to 94.5%; hafnium oxide 2% to 3%; silicon dioxide 1% to 2%; manganese dioxide 0.3% to 0.9%; iron oxide 0.1% to 1%; arsenic trioxide 0.1% to 1%; and calcium oxide 0.01% to 0.1%.

[0007] Preferably, the method for processing the fireworks oxidant comprises the following steps:

[0008] S1 weighs each component according to the ratio and mixes them to obtain the material;

[0009] S2 material is fed into the calcining furnace for calcination; the material at the calcining furnace outlet is mixed with the ball milling medium and ball milled in a wet ball mill;

[0010] After S3 ball milling, the mixture of material and ball milling medium is fed into the feed port of the vacuum concentrator, which is provided with a heating mechanism; the bottom of the vacuum concentrator is provided with a material outlet and a condensate outlet; the ball milling medium is evaporated by heat, and the vapor ball milling medium outlet at the top of the vacuum concentrator is connected to the top of the condenser through a demister, and the vapor ball milling medium enters the receiving chamber at the bottom of the condenser through the condenser; the material after removing the ball milling medium is discharged from the material outlet of the vacuum concentrator to obtain the fireworks oxidant.

[0011] The beneficial effects of the present invention are that the provided fireworks oxidant is suitable for fireworks pyrotechnic agents, can be widely used in fireworks spray agents and propellant agents, and is smokeless and odorless when burned; the fireworks oxidant is not easy to decompose and has good stability, and has zero friction sensitivity and impact sensitivity, is suitable for high-level automated production, and greatly reduces production and transportation safety risks.

[0012] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time.

[0013] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0014] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0015] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0016] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0017] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0018] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a system configuration diagram of the Taiyang powder processing device for preparing the embodiment;

[0020] Figure 2 It is a structural schematic diagram of the Taiyang powder processing device for preparing the embodiment.

[0021] Explanation of the accompanying drawings: 101. Calcination furnace; 102. Discharge port; 103. Elevator; 201. Wet ball mill; 202. Feed port; 203. Discharge port; 301. Vacuum concentration tank; 302. Thermometer; 303. Defoamer; 304. Cooling water outlet; 305. Condenser; 306. Cooling water inlet; 307. Pressure storage tank; 308. Receiving chamber; 309. Exhaust valve; 310. Condensate outlet; 311. Material outlet; 312. Steam inlet; 313. Feed port; 314. Reflux pipe. DETAILED DESCRIPTION

[0022] Preparation Example: The smokeless and odorless fireworks oxidizer is composed of the following components in percentage by mass: 93.5% to 94.5% zirconium oxide; 2% to 3% hafnium oxide; 1% to 2% silicon dioxide; 0.3% to 0.9% manganese dioxide; 0.1% to 1% iron oxide; 0.1% to 1% arsenic trioxide; and 0.01% to 0.1% calcium oxide. To obtain an oxidizer suitable for fireworks, the components are mixed, calcined, and then wet-milled to a particle size of no greater than 400 mesh. The resulting modified powder, referred to as taiolate powder, is suitable as an oxidizer for fireworks and can be widely used in fireworks sprays and propellants.

[0023] For the modified processing of calcined ball mill, please refer to the attached Figure 1-2 The processing device of the Tai oxygen powder is composed of a calcining furnace 101, a wet ball mill 201, and a vacuum concentration tank 301 in sequence.

[0024] The components are weighed and mixed according to the above ratio to obtain a material. The material is fed into the calcining furnace 101 by the elevator 103 for calcination. The material then flows out of the discharge port 102 and enters the feed port 202 of the ball mill 201. The material is mixed with a ball milling medium (such as water or kerosene) and ball milled in the wet ball mill 201. The particle size of the material after ball milling is no larger than 400 mesh.

[0025] The milled material and milling medium mixture is fed from discharge port 203 into feed port 313 of vacuum concentrator 301. The heating coils within vacuum concentrator 301, which heat the material, are connected to a steam supply (not shown) via steam inlet 312. The vacuum concentrator also houses a stirring assembly, a thermometer 302, and an exhaust valve 309.

[0026] A material outlet 311 and a condensate outlet 310 are provided at the bottom of the vacuum concentration tank 301 .

[0027] The heated, vaporized ball milling medium exits the top outlet of vacuum concentrator 301 through demister 303 and enters the top of condenser 305. There, gas and liquid separation occurs. The liquid collected by the demister returns to vacuum concentrator 301 through reflux pipe 314. This prevents waste of entrained material and improves the purity of the recovered ball milling medium.

[0028] The vaporized ball milling medium descends from the top of condenser 305 through the middle of condenser 305 and enters a receiving chamber 308 at the bottom of condenser 305. A condensation pipe is provided in the middle of condenser 305. One end of the condensation pipe is connected to a cooling water supply mechanism (not shown) via a cooling water inlet 306, and the other end of the condensation pipe is provided with a cooling water outlet 304. This condenses the vaporized ball milling medium into a liquid state for recycling.

[0029] The inner cavity of the condenser 305 is connected to a vacuum pump (not shown in the figure) through a pressure storage tank 307. Since the condenser 305 is connected to the inner cavity of the vacuum concentration tank 301, a low-pressure environment can be maintained in the condenser 305 and the vacuum concentration tank 301 to reduce the boiling point of the ball milling medium and cause it to evaporate quickly. The processing and manufacturing process is safe, efficient and environmentally friendly: the material is mixed with the ball milling medium after calcination, and is wet-milled into granular materials not larger than 400 mesh. Under the low-pressure environment of the vacuum concentration tank, the ball milling medium in the material is heated by the heating coil to evaporate efficiently and then condense into liquid, thereby achieving efficient separation of the ball milling medium and the material. The material after removing the ball milling medium is discharged from the material outlet 311 of the vacuum concentration tank 301. In the example, the material is also air-dried by an air-drying mechanism. Thus, Tai oxygen powder is obtained.

[0030] A 237-gram sample of the prepared Taiyang powder, randomly selected from the National Fireworks and Firecrackers Product Quality Inspection and Testing Center, passed testing. Test report number: WAY20250403. The testing and assessment were based on standard AQ4104-2008, "Safety Performance Indicators and Determination Methods for Fireworks and Firecrackers Pyrotechnic Powders." The test concluded that the safety performance of all items tested met the requirements of standard AQ4104-2008. Specifically, the friction sensitivity (70-degree swing angle, hydraulic pressure: 1.23 MPa) was 0%, and the impact sensitivity (hammer weight: 10 kg, hammer height: 250 mm) was 0%.

[0031] Application Example 1: Use oxyacetic acid powder as an oxidant to produce a fireworks composition—propellant. The propellant's components, by weight, are: oxyacetic acid powder 38 parts, nitrocellulose 62 parts. Mix and granulate according to standard methods.

[0032] A 100-gram sample of black pellets randomly selected from the propellant passed testing at the National Fireworks and Firecrackers Product Quality Inspection and Testing Center. Test report number: WAY20250404. The testing and assessment were based on standard AQ4104-2008, "Safety Performance Indicators and Determination Methods for Fireworks and Firecrackers Pyrotechnic Compositions." The test concluded that all safety performance indicators met the requirements of standard AQ4104-2008. Specifically, the friction sensitivity (70-degree swing angle, hydraulic pressure: 1.23 MPa) was 22%, and the impact sensitivity (hammer weight: 10 kg, hammer height: 250 mm) was 18%.

[0033] There is no smoke when the fireworks are set off, the fireworks launch performance meets the requirements, and there is no odor of ammonium perchlorate burning.

[0034] Application Example 2: Using Tyrox powder as the oxidant to create a spray-type firework—a cake firework. The pyrotechnic composition, by weight, is as follows: 4 parts Tyrox powder, 92 parts single-base powder, and 4 parts titanium sponge powder. Mix according to standard methods and produce the cake firework using the usual cake firework production process.

[0035] Twenty randomly selected samples of the cake fireworks passed testing at the National Fireworks and Firecrackers Product Quality Inspection and Testing Center (Test Report No. WAC20250964). The testing and assessment were based on GB 10631-2013, "Safety and Quality of Fireworks and Firecrackers." The conclusion was: All items tested met the requirements of GB 10631-2013. Specific firing and safety performance are shown in the table below:

[0036]

[0037] Visual inspection during the fireworks display: the fireworks display speed is uniform, there is no smoke during combustion, the fireworks shape meets the requirements, and there is no odor of ammonium perchlorate combustion.

[0038] The embodiments of the present invention disclosed above are only used to help illustrate the present invention. The embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and changes can be made based on the contents of this specification. This specification selects and describes these embodiments in detail in conjunction with the accompanying drawings in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and utilize the present invention well. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention. Therefore, the present invention is only limited by the claims and their full scope and equivalents, and is not limited by the specific embodiments disclosed.

Claims

1. A smokeless and odorless fireworks oxidant, characterized in that: The invention is composed of the following components: zirconium dioxide, hafnium dioxide, silicon dioxide, manganese dioxide, iron oxide, arsenic trioxide and calcium oxide; the weight proportion of zirconium dioxide is not less than 90%; the components are mixed, calcined and then wet ball milled to obtain a powdery material.

2. A smokeless and odorless fireworks oxidant as claimed in claim 1, characterized in that: The particle size of the powdery material is not greater than 400 mesh.

3. A smokeless and odorless fireworks oxidant as claimed in claim 1 or 2, characterized in that: The mass percentage of each component is: zirconium oxide 93.5% to 94.5%; hafnium oxide 2% to 3%; silicon dioxide 1% to 2%; manganese dioxide 0.3% to 0.9%; iron oxide 0.1% to 1%; arsenic trioxide 0.1% to 1%; and calcium oxide 0.01% to 0.1%.

4. The smokeless and odorless fireworks oxidant according to claim 1, characterized in that: The processing method of the fireworks oxidant comprises the following steps: S1 weighs each component according to the ratio and mixes them to obtain the material; S2 material is fed into the calcining furnace for calcination; the material at the calcining furnace outlet is mixed with the ball milling medium and ball milled in a wet ball mill; After S3 ball milling, the mixture of material and ball milling medium is fed into the feed port of the vacuum concentrator, which is provided with a heating mechanism; the bottom of the vacuum concentrator is provided with a material outlet and a condensate outlet; the ball milling medium is evaporated by heat, and the vapor ball milling medium outlet at the top of the vacuum concentrator is connected to the top of the condenser through a demister, and the vapor ball milling medium enters the receiving chamber at the bottom of the condenser through the condenser; the material after removing the ball milling medium is discharged from the material outlet of the vacuum concentrator to obtain the fireworks oxidant.

Images