A kind of anti-caking oxidant for fireworks and firecrackers and preparation method thereof

Abstract

The invention discloses an anti-caking oxidizing agent for fireworks and crackers and a preparation method thereof. The oxidizing agent comprises oxidation components including potassium perchlorate and barium nitrate, and additive components including fumed silica and tartrate and / or potassium sodium tartrate. The preparation method for the oxidizing agent comprises the following steps: placing potassium perchlorate, barium nitrate, fumed silica and tartrate and / or potassium sodium tartrate into a pulverizer, carrying out crushing and mixing, and then carrying out crushing until the obtained mixture has a particle size of no more than 400 meshes. The oxidizing agent is not prone to caking and has good stability during storage; the oxidizing agent can be used for preparation of fireworks and crackers with good explosion loudness, flame relaying capacity, high firing rate, good heat stability, and properties like hygroscopicity, friction sensitivity and strike sensitivity meeting requirements of National Standard for Safety and Quality of Fireworks and Crackers in China; and the oxidizing agent has good application prospects.

Description

technical field

[0001] The invention relates to an anti-caking oxidant for fireworks and firecrackers and a preparation method thereof, belonging to the field of fireworks and firecrackers manufacturing. Background technique

[0002] Since the implementation of "Safety and Quality of Fireworks and Firecrackers" GB10631-2013, due to the safety and storage stability of potassium perchlorate, the oxidant used in domestic production of firecrackers is potassium perchlorate. However, the production process of potassium perchlorate all adopts the method of potassium chlorate secondary electrolysis, and every ton of potassium perchlorate needs more than 8,000 kilowatt-hours of electricity, which consumes a large amount of electric energy and potassium resources, making the cost of potassium perchlorate higher, and the price per ton is as high as nearly 10,000 yuan, resulting in higher production costs for fireworks and firecracker enterprises. In addition, potassium perchlorate is...

Examples

Embodiment 1

[0022] A mixture of 10% by mass percentage of potassium perchlorate and 90% of barium nitrate, plus 0.5% of potassium sodium tartrate and 0.5% of fumed silica, and 0.009% of rose bengal as raw material, are placed in a pulverizer , pulverized and mixed for about 20 minutes, and pulverized until the particle size of the mixed material was ≤400 mesh. The color of the mixed material was judged to be uniform, and the oxidizing agent was obtained. Finally, a 1:1 mixture of oxidant and combustible agent is used to form fireworks and firecrackers to produce firecrackers. Firecrackers are tested according to SN / T0306.4-2006, GB10631-2013, United Nations standards, etc.:

[0023] The detonation rate reaches more than 95%;

[0024] The firing rate reaches over 98%;

[0025] Sound level: sound level value ≤ 120dB (maximum sound level value 118.6dB, minimum sound level value 112.3dB, average sound level value 116.9dB);

[0026] The time for gas product pressure to rise from 0.69MPa to ...

technical field

[0001] The invention relates to an anti-caking oxidant for fireworks and firecrackers and a preparation method thereof, belonging to the field of fireworks and firecrackers manufacturing. Background technique

[0002] Since the implementation of "Safety and Quality of Fireworks and Firecrackers" GB10631-2013, due to the safety and storage stability of potassium perchlorate, the oxidant used in domestic production of firecrackers is potassium perchlorate. However, the production process of potassium perchlorate all adopts the method of potassium chlorate secondary electrolysis, and every ton of potassium perchlorate needs more than 8,000 kilowatt-hours of electricity, which consumes a large amount of electric energy and potassium resources, making the cost of potassium perchlorate higher, and the price per ton is as high as nearly 10,000 yuan, resulting in higher production costs for fireworks and firecracker enterprises. In addition, potassium perchlorate is...

Examples

Embodiment 1

[0022] A mixture of 10% by mass percentage of potassium perchlorate and 90% of barium nitrate, plus 0.5% of potassium sodium tartrate and 0.5% of fumed silica, and 0.009% of rose bengal as raw material, are placed in a pulverizer , pulverized and mixed for about 20 minutes, and pulverized until the particle size of the mixed material was ≤400 mesh. The color of the mixed material was judged to be uniform, and the oxidizing agent was obtained. Finally, a 1:1 mixture of oxidant and combustible agent is used to form fireworks and firecrackers to produce firecrackers. Firecrackers are tested according to SN / T0306.4-2006, GB10631-2013, United Nations standards, etc.:

[0023] The detonation rate reaches more than 95%;

[0024] The firing rate reaches over 98%;

[0025] Sound level: sound level value ≤ 120dB (maximum sound level value 118.6dB, minimum sound level value 112.3dB, average sound level value 116.9dB);

[0026] The time for gas product pressure to rise from 0.69MPa to ...