CN113372181A

CN113372181A - Oxidant for fireworks and firecrackers lead and preparation method thereof

Info

Publication number: CN113372181A
Application number: CN202110723944.1A
Authority: CN
Inventors: 黄启庆; 黄文芝; 刘景如; 李宗易
Original assignee: Hunan Qingtai Firecracker Manufacturing Co ltd
Current assignee: Hunan Qingtai Firecracker Manufacturing Co ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2021-09-10

Abstract

An oxidant for a firework and firecracker lead and a preparation method thereof relate to the firework and firecracker lead technology. A certain amount of potassium perchlorate, barium nitrate and urea nitrate are put into a vertical mill for grinding until the potassium perchlorate, the barium nitrate and the urea nitrate pass through a certain mesh, then the grinding is stopped, a certain amount of active agent and ferroferric oxide are further added into the vertical mill, then the vertical mill is started for grinding, the rotating speed of the vertical mill is adjusted, after the grinding is carried out for a period of time, the obtained mixture passes through a certain mesh, finally the mixture is cooled to the normal temperature, and the mixture is qualified through inspection. The invention adopts potassium perchlorate, barium nitrate and urea nitrate as ingredients, and the prepared oxidant has the characteristic of higher safety because the potassium perchlorate, the barium nitrate and the urea nitrate have the characteristic of relatively higher chemical stability and lower sensitivity to machinery and friction.

Description

Oxidant for fireworks and firecrackers lead and preparation method thereof

Technical Field

The invention relates to the technical field of fireworks and crackers, in particular to an oxidant for a fireworks and firecracker lead and a preparation method thereof.

Background

The fireworks and crackers make positive contribution to the earning of foreign exchange for export in China by using the fireworks effect with great ornamental value, and become the pillar industry for economic development in some areas in China. The fireworks and crackers produce fireworks and firecrackers by igniting the fireworks and firecrackers in the product to produce combustion or explosion reaction, and then produce sound, light, color and other equivalent effects.

Fireworks and crackers are flammable and explosive dangerous goods and are easy to have accidents in the production, transportation and use processes. According to statistics, most of safety accidents of fireworks and crackers are caused by instability of pyrotechnic compositions and leads. One of the main reasons of some fireworks explosion accidents is that the sensitivity of the lead is high, and the lead can cause combustion and explosion after being slightly rubbed, impacted, heated and the like. Therefore, in order to ensure the production safety of fireworks and crackers, besides strengthening management and producing according to the chapter, the key is to reduce the sensitivity of lead mixed medicines and improve the technological content from the internal cause of enterprise production, and the main factor influencing the sensitivity of the medicines is the performance of an oxidant.

Disclosure of Invention

The invention aims to provide an oxidant for a firework and firecracker lead and a preparation method thereof aiming at the defects and shortcomings of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme: the oxidant for the firework and firecracker lead comprises, by weight, 35-60 parts of potassium perchlorate, 25-40 parts of barium nitrate, 15-20 parts of urea nitrate, 5-15 parts of an active agent and 15-30 parts of ferroferric oxide.

Furthermore, the oxidant for the fireworks and firecrackers lead comprises, by weight, 50 parts of potassium perchlorate, 40 parts of barium nitrate, 15 parts of urea nitrate, 10 parts of an active agent and 15 parts of ferroferric oxide.

Further, the active agent is fatty glyceride.

The preparation method of the oxidant for the fireworks and firecrackers lead comprises the following steps:

step 1, putting potassium perchlorate, barium nitrate and urea nitrate into a vertical mill, and grinding the mixture to 200-250 meshes;

step 2, after the step 1 is completed, adding an activating agent and ferroferric oxide into the vertical mill, and grinding the mixture to a 300-400-mesh sieve;

and 3, after the step 2 is finished, cooling the mixed ingredients to normal temperature, and packaging after the mixed ingredients are inspected to be qualified to obtain the oxidant for the fireworks and firecrackers lead.

Further, the rotating speed of the vertical mill in the step 1 is 800-1000 r/min.

Further, the rotating speed of the vertical mill in the step 2 is 1200-1500 r/min.

The working principle of the invention is as follows:

firstly, putting a certain amount of potassium perchlorate, barium nitrate and urea nitrate into a vertical mill for grinding until the potassium perchlorate, the barium nitrate and the urea nitrate pass through a 200-250-mesh sieve, stopping grinding, further adding a certain amount of an active agent and ferroferric oxide into the vertical mill, starting the vertical mill for grinding, adjusting the rotating speed of the vertical mill, grinding for a period of time to obtain a mixture, passing the mixture through a 300-400-mesh sieve, cooling the mixture to normal temperature, and checking to be qualified to obtain the oxidant for the firework and firecracker lead.

After the technical scheme is adopted, the invention has the beneficial effects that:

1. the potassium perchlorate is used as an ingredient, and has the characteristic of relatively high chemical stability and low sensitivity to machinery and friction, so that the prepared oxidant has high safety;

2. the decomposition oxygen release reaction of barium nitrate and urea nitrate adopted in the invention is endothermic reaction, and simultaneously is not sensitive to mechanical action, has good chemical stability, lower cost and no toxicity to human body, so that the prepared oxidant has the characteristics of safety, low manufacturing cost and the like;

3. according to the invention, ferroferric oxide is added into the ingredients, so that the ferroferric oxide can accelerate the decomposition of barium nitrate and urea nitrate and has the function of a catalyst;

4. the active agent added into the ingredients can effectively improve the moisture absorption problem of the oxidant in the ingredients, so that the finished product has better combustion performance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention.

Description of reference numerals: 1-step 1, 2-step 2, 3-step 3.

Detailed Description

Referring to fig. 1, the technical solution adopted by the present embodiment is: the catalyst comprises 55 parts of potassium perchlorate, 40 parts of barium nitrate, 20 parts of urea nitrate, 15 parts of activity and 30 parts of ferroferric oxide.

The active agent is fatty glyceride.

step 1, putting potassium perchlorate, barium nitrate and urea nitrate into a vertical mill, and grinding the mixture to a 250-mesh sieve;

step 2, after the step 1 is finished, adding an activating agent and ferroferric oxide into the vertical mill, and grinding the mixture to a 400-mesh sieve;

The rotating speed of the vertical mill in the step 1 is 900 r/min.

Further, the rotating speed of the vertical mill in the step 2 is 1500 r/min.

According to the embodiment, firstly, a certain amount of potassium perchlorate, barium nitrate and urea nitrate are put into a vertical mill for grinding until the potassium perchlorate, the barium nitrate and the urea nitrate pass through a 250-mesh sieve, then the grinding is stopped, a certain amount of active agent and ferroferric oxide are further added into the vertical mill, then the vertical mill is started for grinding, the rotating speed of the vertical mill is adjusted, after the grinding is carried out for a period of time, the obtained mixture passes through a 400-mesh sieve, finally, the mixture is cooled to the normal temperature, and after the mixture is inspected to be qualified, the oxidant for the firework and firecracker lead is prepared.

After adopting above-mentioned technical scheme, this embodiment beneficial effect does:

1. in the embodiment, potassium perchlorate is used as an ingredient, and has the characteristic of relatively high chemical stability and low sensitivity to machinery and friction, so that the prepared oxidant has high safety;

2. the decomposition oxygen release reaction of barium nitrate and urea nitrate adopted in the embodiment is an endothermic reaction, is not sensitive to mechanical action, has good chemical stability, is low in cost and is non-toxic to human bodies, so that the prepared oxidant has the characteristics of safety, low manufacturing cost and the like;

3. in the embodiment, ferroferric oxide is added into the ingredients, so that the ferroferric oxide can accelerate the decomposition of barium nitrate and urea nitrate and has the function of a catalyst;

4. the active agent added into the ingredients in the embodiment can effectively improve the moisture absorption problem of the oxidant in the ingredients, so that the finished product has better combustion performance.

The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The oxidant for the fireworks and firecrackers lead is characterized in that: the high-efficiency barium nitrate fuel comprises, by weight, 35-60 parts of potassium perchlorate, 25-40 parts of barium nitrate, 15-20 parts of urea nitrate, 5-15 parts of an active agent and 15-30 parts of ferroferric oxide.

2. An oxidant for fireworks and firecrackers lead as claimed in claim 1, wherein: the composition comprises, by weight, 50 parts of potassium perchlorate, 40 parts of barium nitrate, 15 parts of urea nitrate, 10 parts of an active agent and 15 parts of ferroferric oxide.

3. An oxidant for fireworks and firecrackers lead as claimed in claim 1, wherein: the active agent is fatty glyceride.

4. The preparation method of the oxidant for the fireworks and firecrackers lead is characterized by comprising the following steps: it comprises the following steps:

step (1), putting potassium perchlorate, barium nitrate and urea nitrate into a vertical mill, and grinding the mixture to 200-250 meshes;

step (2), after the step (1) is completed, adding an activating agent and ferroferric oxide into the vertical mill, and grinding the mixture to a 300-400-mesh sieve;

and (3) after the step (2) is completed, cooling the mixed ingredients to normal temperature, and packaging after the mixed ingredients are inspected to be qualified to obtain the oxidant for the fireworks and firecrackers lead.

5. The method for preparing the oxidant for the fireworks and firecrackers lead as claimed in claim 4, wherein the method comprises the following steps: the rotating speed of the vertical mill in the step (1) is 800-1000 r/min.

6. The method for preparing the oxidant for the fireworks and firecrackers lead as claimed in claim 4, wherein the method comprises the following steps: the rotating speed of the vertical mill in the step (2) is 1200-1500 r/min.