Solid flame color reagent and its forming process

Abstract

The application discloses a solid flame color reaction agent, raw material components include sodium silicate, sodium carbonate and color developing agent, wherein the sodium silicate is in solution state or solid state. The application also discloses a forming process of the solid flame color reaction agent, which comprises uniformly mixing the raw material components, burying a carrier into the mixed material, and then drying and forming or sintering to form the carrier with the solid flame color reaction agent attached. The solid flame color reaction agent can be attached to the surface of various carriers or filled into the interior of the carrier, and can display bright orange yellow color when meeting hydrogen gas flame, can meet the long-period color developing requirement, and has strong flame color persistence and no obvious attenuation.

Description

TECHNICAL FIELD

[0001] The present application relates to a solid-state flame color reaction agent and its forming process, belonging to the technical field of flame color reaction. BACKGROUND

[0002] The principle of gas or liquid fuel combustion producing colored flame is that the electrons outside the atomic nucleus of fuel material are accelerated and excited by means of flame, spark or high-voltage potential, and part of the electrons absorb energy to jump to a higher energy level (excited state), so that they become very unstable. When the electrons return to the ground state, the energy originally absorbed is mainly released in the form of photons. If the light released is within the visible light range, the flame will show the corresponding flame color.

[0003] Propane is an important torch fuel for sports events, and its combustion flame is yellow. In response to the concept of green, low-carbon and environmental protection, more and more sports events use hydrogen as torch fuel in recent years. Hydrogen fuel combustion produces transparent and colorless flame, which has poor visibility and appearance. Therefore, flame color enhancer is usually added to the flame. Patent CN113956903A discloses a preparation method of flame color enhancer, which mentions a yellow flame color enhancer with iron-chromium-aluminum as carrier. The color enhancer mentioned in this patent has single flame color, and the coating obtained by dipping method is thin, which has short service life and short service time. Patent CN114011682A discloses a slow-release flame color coating formed by adding flame color reaction agent to porous silicon oxide coating. The coating of the color enhancer mentioned in this patent needs two forming processes, which is complicated and has high cost. Moreover, the loading amount of the flame color reaction agent is small, and the flame color time is limited.

[0004] Conventional flame color reaction agents are limited by the form or adding method of the material, and it is difficult to achieve the attachment of special-shaped carriers and long-period coloration of days. SUMMARY

[0005] The present application aims to overcome the above-mentioned defects, and provides a solid-state flame color reaction agent and its forming process, which solves the technical problem that conventional flame color reaction agents are limited by the form or adding method of the material, and it is difficult to achieve the attachment of special-shaped carriers and long-period coloration of days. The solid-state flame color reaction agent of the present application can be attached to the surface of various forms of carriers or filled into the interior of the carrier, and shows bright orange-yellow color when encountering hydrogen flame, which can meet the long-period coloration requirement, and the flame color has strong persistence and no obvious decay.

[0006] To achieve the above-mentioned application purposes, the present application provides the following technical solutions:

[0007] A solid-state flame color reaction agent is prepared by using the following raw material components with mass percentage:

[0008] Sodium silicate 85% to 93%;

[0009] sodium carbonate 0%~9%;

[0010] color developing agent 6%~7%;

[0011] the sum of the mass percentage of sodium silicate, sodium carbonate and color developing agent is 100%;

[0012] the sodium silicate is in solution state or solid state;

[0013] the color developing agent is one of strontium chloride, calcium chloride or lithium chloride or a mixture of two or more thereof.

[0014] further, the sodium silicate is Na2O·2.8SiO2 solution, Na2O·2.4SiO2 solution or Na2O·2.2SiO2 solution with a concentration not less than 45°Baume;

[0015] or the sodium silicate is solid anhydrous sodium metasilicate;

[0016] the color developing agent is a mixture of strontium chloride and calcium chloride with a mass ratio of 1:1.

[0017] a forming process of a solid flame color reaction agent, comprising:

[0018] mixing the raw material components uniformly to obtain a mixture; the raw material components and their mass percentage are as follows:

[0019] sodium silicate 85%~93%;

[0020] sodium carbonate 0%~9%;

[0021] color developing agent 6%~7%;

[0022] the sodium silicate is in solution state or solid state;

[0023] the color developing agent is one of strontium chloride, calcium chloride or lithium chloride or a mixture of two or more thereof;

[0024] after embedding the carrier into the mixture, drying and forming or sintering to form the carrier with the solid flame color reaction agent attached thereto.

[0025] further, the sodium silicate is Na2O·2.8SiO2 solution, Na2O·2.4SiO2 solution or Na2O·2.2SiO2 solution with a concentration not less than 45°Baume;

[0026] or the sodium silicate is solid anhydrous sodium metasilicate;

[0027] the carrier is made of metal or ceramic; the solid flame color reaction agent is attached to the surface of the carrier, the inside of the hollow carrier or the pores of the porous structure carrier.

[0028] Further, when the sodium silicate is in solution state, the carrier is buried in the mixture and then dried and formed or sintered and formed;

[0029] When the sodium silicate is in solid state, the carrier is buried in the mixture and then sintered and formed.

[0030] Further, the drying and forming is performed by using a muffle furnace, and the program-controlled heating steps are as follows:

[0031] (1) The furnace temperature is uniformly raised from normal temperature to 100-200°C in 10-20 minutes;

[0032] (2) The furnace temperature is kept at 100-200°C for 10-20 minutes;

[0033] (3) The furnace temperature is uniformly raised from 100-200°C to 350-400°C in 10-20 minutes;

[0034] (4) The furnace temperature is kept at 350-400°C for 10-20 minutes;

[0035] (5) The furnace temperature is naturally cooled from 350-400°C to normal temperature.

[0036] Further, the sintering and forming is performed by using a muffle furnace, and the program-controlled heating steps are as follows:

[0037] (1) The furnace temperature is uniformly raised from normal temperature to 100-200°C in 10-20 minutes;

[0038] (2) The furnace temperature is kept at 100-200°C for 10-20 minutes;

[0039] (3) The furnace temperature is uniformly raised from 100-200°C to 350-400°C in 10-20 minutes;

[0040] (4) The furnace temperature is kept at 350-400°C for 20-40 minutes;

[0041] (5) The furnace temperature is uniformly raised from 350-400°C to 900-1000°C in 50-70 minutes;

[0042] (6) The furnace temperature is kept at 900-1000°C for 20-40 minutes;

[0043] (7) The furnace temperature is uniformly lowered from 900-1000°C to 350-400°C in 50-70 minutes;

[0044] (8) The furnace temperature is naturally cooled from 350-400°C to normal temperature.

[0045] Further, the method for mixing each raw material component uniformly to obtain the mixture is as follows:

[0046] The sodium carbonate is crushed and passed through a 200-mesh sieve, and the undersize is placed in a crucible;

[0047] The color developing agent is crushed and passed through a 150-mesh sieve, and the undersize is placed in a crucible;

[0048] The sodium silicate is poured into the crucible containing the sodium carbonate and the color developing agent, and is stirred uniformly;

[0049] Further, the forming process of the solid flame color reaction agent also includes: locally peeling or polishing the solid flame color reaction agent attached to the carrier to meet the appearance requirements.

[0050] Further, the solid flame color reaction agent attached to the carrier is a porous medium compound;

[0051] The thickness of the solid flame color reaction agent attached to the carrier is 10-15 mm, and the flame color reaction time of the solid flame color reaction agent layer is greater than or equal to 7 days.

[0052] Compared with the prior art, the present application has the following beneficial effects:

[0053] (1) The solid flame color reaction agent of the present application can adjust the color developing effect of the hydrogen flame by configuring different mass percentages of raw materials, and can meet the wide range of changes from light orange flame to deep orange flame;

[0054] (2) The heating forming process of the solid flame color reaction agent of the present application can be applied to carriers with different shapes or structures, and can achieve uniform and sufficient attachment, effectively prolonging the flame color reaction time;

[0055] (3) The heating process of the solid flame color reaction agent of the present application can select dry or sintering forming processes according to the needs, and the raw materials have a wide application range; compared with the dry forming process, the sintering forming process has more firm attachment of the solid flame color reaction agent, longer color developing time, and less deformation of the solid flame color reaction agent after long-term contact with the flame, without affecting the carrier shape; the dry forming process has simpler manufacturing procedures and lower manufacturing cost;

[0056] (4) The solid flame color reaction agent formed by dry or sintering meets the color developing needs of the hydrogen flame, and the flame color is bright; the solid flame color reaction agent has no color attenuation after long-term contact with the flame;

[0057] (5) The raw material of the present application is sodium silicate, which can effectively improve the adhesion between the solid flame color reaction agent and the carrier;

[0058] (6) The dry process and the sintering process are the optimal processes designed for the formula of the present application, which can effectively improve the uniformity of the solid flame color reaction agent and obtain the ideal thickness. Attached Figure Description

[0059] Figure 1 This is a flowchart of a solid flame tester forming method according to the present invention;

[0060] Figure 2 This is the drying and heating curve of the solid flame test reagent of the present invention;

[0061] Figure 3 This is the sintering heating curve of the solid flame tester of the present invention;

[0062] Figure 4 This is an image showing the effect of the solid flame tester attached to the carrier prepared by the drying process in Example 1 of the present invention;

[0063] Figure 5 This is an image showing the effect of the solid flame coloring agent attached to the carrier prepared by the sintering process in Example 2 of the present invention. Detailed Implementation

[0064] The features and advantages of the present invention will become clearer and more apparent from the following detailed description.

[0065] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments. Although various aspects of embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated otherwise.

[0066] This invention relates to a solid flame coloring agent suitable for flame coloring requirements under special environmental conditions, particularly for hydrogen flame coloring requirements. The solid flame coloring agent is composed of sodium silicate, sodium carbonate, and a coloring agent, and is formed using a heating-drying or sintering process. This solid flame coloring agent forming process allows it to be attached to the surface of various shaped carriers or filled into the interior of carriers. This solid flame coloring agent can meet the requirements for long-term coloring.

[0067] This invention discloses a solid flame tester, the raw material composition and mass percentage of which are as follows:

[0068] Sodium silicate 85%–93%;

[0069] Sodium carbonate 0%–9%;

[0070] Color developer 6%–7%;

[0071] Optionally, the sodium silicate raw material is a solution with a concentration of not less than 45° Baume, such as Na2·2.8SiO2 solution, Na2·2.4SiO2 solution or Na2·2.2SiO2 solution; or, the sodium silicate raw material is white solid anhydrous sodium metasilicate with a molecular formula of Na2SiO3; in the formula of the present application, the sodium silicate provides sodium ions that can cause flame color reaction and improves the bonding capacity of the solid flame color reaction agent to the carrier.

[0072] Optionally, the color developing agent is one of strontium chloride, calcium chloride and lithium chloride or a mixture of two or three thereof.

[0073] The sodium silicate solution of the present application has a certain water content and a limited mass fraction of sodium ions, and the mass fraction of sodium ions can be increased by adding sodium carbonate to increase the yellow display depth; the sodium silicate raw material is selected to be a solution with a concentration of not less than 45° Baume, because a solution with a concentration of less than 45° Baume has a high water content and low viscosity, and the mixture prepared therefrom has poor forming during drying or sintering, which is not conducive to the forming of high-quality solid flame color reaction agent; with the increase of the number, the Baume and the viscosity increase, and the forming effect is better; Na2·2.8SiO2 solution, Na2·2.4SiO2 solution or Na2·2.2SiO2 solution is an industrial product of large-scale production and is easy to obtain economically.

[0074] For example, Figure 1 A forming process of a solid flame color reaction agent, the specific steps of which are as follows:

[0075] a) crushing sodium carbonate and passing it through a 200-mesh sieve, and taking the undersize to a crucible;

[0076] b) crushing the color developing agent and passing it through a 150-mesh sieve, and taking the undersize to the crucible;

[0077] c) pouring anhydrous sodium metasilicate into the crucible containing the sodium carbonate and the color developing agent, and stirring uniformly;

[0078] d) placing a metal or ceramic carrier in the crucible and burying it under the uniform material;

[0079] e) placing the crucible containing the metal or ceramic carrier and the uniform material in a muffle furnace for heating;

[0080] f) after heating, taking out the carrier with the solid flame color reaction agent attached thereto;

[0081] g) performing a cleaning treatment such as partial peeling and polishing on the solid flame color reaction agent attached to the surface of the carrier or filled into the interior of the carrier, and detecting the appearance to meet the requirements.

[0082] Or, the specific steps are as follows:

[0083] a) The sodium carbonate is crushed and passed through a 200 mesh sieve, and the undersize is placed in a crucible;

[0084] b) The color reagent is crushed and passed through a 150 mesh sieve, and the undersize is placed in a crucible;

[0085] c) The sodium silicate solution is poured into the crucible containing the sodium carbonate and color reagent, and stirred until uniform;

[0086] d) The metal or ceramic carrier is placed in the crucible and immersed below the surface of the liquid mixture;

[0087] e) The crucible containing the metal or ceramic carrier and the uniform liquid mixture is placed in a muffle furnace for heating;

[0088] f) After heating, the carrier with the solid flame color reagent attached is removed;

[0089] g) The solid flame color reagent attached to the surface of the carrier or filled into the interior of the carrier is subjected to a surface cleaning treatment such as partial peeling and polishing, and the appearance is checked to ensure that it meets the requirements.

[0090] Optionally, when the raw material is solid zero-water metasilicate sodium, sintering is used for forming, as shown in the following table: Figure 3 The program-controlled heating steps in the muffle furnace are as follows:

[0091] a) The furnace temperature is uniformly increased from room temperature to 150°C in 15 minutes;

[0092] b) The furnace temperature is held at 150°C for 15 minutes;

[0093] c) The furnace temperature is uniformly increased from 150°C to 350°C in 15 minutes;

[0094] d) The furnace temperature is held at 350°C for 30 minutes;

[0095] e) The furnace temperature is uniformly increased from 350°C to 950°C in 60 minutes;

[0096] f) The furnace temperature is held at 950°C for 30 minutes;

[0097] g) The furnace temperature is uniformly decreased from 950°C to 350°C in 60 minutes;

[0098] h) The furnace temperature is naturally cooled from 350°C to room temperature.

[0099] In the above process, heating to 350°C and holding for a period of time is mainly to remove free water and bound water in the mixture. Although solid zero-water metasilicate sodium theoretically does not contain water, it is placed in the air and has a certain humidity.

[0100] 350-950℃ is the solid flame color reaction agent deformation process. 900-1000℃ is the sintering temperature range, preferably 950℃, and the sintering is not complete when the temperature is lower than 900℃, and the hardness and shape of the shaped product still have a certain range of variation; when the temperature exceeds 1000℃, the conventional metal carrier will be burned out, and the solid flame color reaction agent is not easy to adhere to success.

[0101] Optionally, when the raw material is sodium silicate solution, sintering or drying is used for forming. When sintering is used for forming, the muffle programmed heating steps are as described above, and when drying is used for forming, the muffle programmed heating steps are as follows Figure 2 , including:

[0102] a) The furnace temperature is uniformly increased from room temperature to 150℃, and the time is 15min;

[0103] b) The furnace temperature is 150℃ for 15min;

[0104] c) The furnace temperature is uniformly increased from 150℃ to 350℃, and the time is 15min;

[0105] d) The furnace temperature is 350℃ for 15min;

[0106] e) The furnace temperature is naturally cooled from 350℃ to room temperature.

[0107] In the above process, the heating to 350℃ and the constant temperature for a period of time are mainly to remove the free water and the combined water in the mixture. The heating temperature is appropriately high at 350℃, and there is no great influence on the forming effect. When the temperature is lower than 350℃, part of the combined water is not completely removed, and the product formed by drying at this temperature is easy to crack when contacting high-temperature fierce flame.

[0108] Optionally, the carrier to which the solid flame color reaction agent is attached can be metal material or non-metal material, and can be processed into different shapes according to different uses.

[0109] The solid flame color reaction agent can be attached to the surface of the carrier or filled into the hollow or porous medium carrier.

[0110] Through testing, the thickness of the solid flame color reaction agent attached to the carrier of the present application is 10-15mm, and the flame color reaction time of the solid flame color reaction agent layer is ≥7 days. The thickness of the flame color reaction agent obtained by the dipping coating method in the prior art can only reach 1-2mm, which leads to short flame color reaction time and cannot meet the demand.

[0111] The solid flame color reaction agent prepared by the drying or sintering forming process of the present application can be applied to metal or non-metal carriers of various shapes, and can be applied to various hydrogen gas burners according to the shape of the carrier, and is especially suitable for the burner structure of special-shaped, complex curved surface or non-metal material, such as the flame stabilizer attached to the flame outlet of the burner.

[0112] The solid-state flame color reaction agent prepared by the drying or sintering forming process of the present application is firmly combined with the carrier, resistant to long-term ablation, and has good thermal vibration stability, and is not easy to fall off under various combustion conditions such as strong wind, rain and snow, or variable thermal load. In the forming process, strontium, lithium, calcium, sodium, chlorine, silicon, oxygen and carbon elements are uniformly mixed in advance to improve the color purity of hydrogen flame; and free water and bound water in the mixture are removed by drying or sintering to avoid the collapse of the flame color reaction agent caused by the instantaneous gasification of water when the flame color reaction agent is contacted by the hot flame; finally, the mixture is fused into a solid porous medium compound by drying or sintering, which is hard and not easy to fall off. The solid-state flame color reaction agent prepared by the forming process of the present application has an adhesion layer of 10-15 mm thick on the surface of the carrier, and is firmly attached, hard in texture, and effectively improves the color life of the flame color reaction agent.

[0113] Example 1

[0114] The raw material composition and mass percentage of the solid-state flame color reaction agent are as follows:

[0115] Na2SiO2 solution with a concentration of 51° Baume 85%;

[0116] Sodium carbonate 9%;

[0117] Calcium chloride and lithium chloride mixture (mass ratio 1:1) 6%;

[0118] The drying and heating process is used for forming, and the preparation steps are as follows:

[0119] a) The sodium carbonate is crushed and passed through a 200 mesh sieve, and the undersize is placed in a crucible;

[0120] b) The calcium chloride and lithium chloride are crushed and passed through a 150 mesh sieve, and the undersize is placed in a crucible;

[0121] c) Pour the sodium silicate solution with a concentration of 51° Baume into the crucible containing sodium carbonate, calcium chloride and lithium chloride, and stir evenly;

[0122] d) Place the metal or ceramic carrier in the crucible and immerse it below the liquid level of the liquid mixture;

[0123] e) Place the crucible containing the metal or ceramic carrier and the uniform liquid mixture in the muffle furnace for drying;

[0124] f) The temperature control process during the drying process is as shown in the following table. Figure 2

[0125] g) After the drying is completed, the carrier with the solid-state flame color reaction agent attached is taken out;

[0126] ​h) the solid flame color reagent attached to the surface of the carrier or filled into the interior of the carrier is subjected to a cleaning treatment such as partial peeling or polishing, and the appearance is checked to see if it meets the requirements, as shown in Figure 4 .

[0127] The carrier used in this example is irregular in shape, and the solid flame color reagent attached to the surface of the carrier obtained by the molding method of the present application is uniform in thickness, about 10.2 mm, and its flame color reaction is orange (electromagnetic wave frequency 489-496 THz) and the flame color reaction time is 7 days.

[0128] Example 2

[0129] The raw material composition and mass percentage of the solid flame color reagent are as follows:

[0130] Na2SiO3 solution with a concentration of 56° Baume 88%;

[0131] Sodium carbonate 6%;

[0132] A mixture of calcium chloride and lithium chloride at a mass ratio of 1:1 6%;

[0133] The molding is performed using a sintering heating process, and the preparation steps are as follows:

[0134] a) The sodium carbonate is crushed and passed through a 200-mesh sieve, and the undersize is placed in a crucible;

[0135] b) The calcium chloride and strontium chloride are crushed and passed through a 150-mesh sieve, and the undersize is placed in a crucible;

[0136] c) The sodium silicate solution with a concentration of 56° Baume is poured into the crucible containing the sodium carbonate, calcium chloride, and strontium chloride, and stirred uniformly;

[0137] d) The metal or ceramic carrier is placed in the crucible and immersed below the liquid level of the liquid mixture;

[0138] e) The crucible containing the metal or ceramic carrier and the uniform liquid mixture is placed in a muffle furnace for sintering;

[0139] f) During the sintering process, the temperature control process is as shown in Figure 3 .

[0140] g) After the sintering is completed, the carrier with the solid flame color reagent attached to it is removed;

[0141] h) The solid flame color reagent attached to the surface of the carrier or filled into the interior of the carrier is subjected to a cleaning treatment such as partial peeling or polishing, and the appearance is checked to see if it meets the requirements, as shown in Figure 5 .

[0142] The carrier used in this embodiment is irregular in shape. The solid flame color reagent attached to the surface of the carrier obtained by the forming method of the present application is uniform in thickness, about 12.6 mm, and the flame color reaction is deep orange (electromagnetic wave frequency 482-489 THz), and the flame color reaction time is 10 days.

[0143] Example 3

[0144] The raw material composition and mass percentage of the solid flame color reagent are as follows:

[0145] Zero-water sodium metasilicate 93%;

[0146] Sodium carbonate 0%;

[0147] Calcium chloride, strontium chloride, lithium chloride mixture (mass ratio) 1:1:1 7%;

[0148] The sintering heating process is used for forming, and the preparation steps are as follows:

[0149] a) Crush the sodium carbonate and pass it through a 200-mesh sieve, and take the undersize and place it in a crucible;

[0150] b) Crush the calcium chloride, strontium chloride, and lithium chloride and pass them through a 150-mesh sieve, and take the undersize and place it in a crucible;

[0151] c) Pour the zero-water sodium metasilicate into the crucible containing the sodium carbonate, calcium chloride, strontium chloride, and lithium chloride, and stir until uniform;

[0152] d) Place the metal or ceramic carrier in the crucible and bury it under the uniform material;

[0153] e) Place the crucible containing the metal or ceramic carrier and the uniform material in a muffle furnace for sintering;

[0154] f) During the sintering process, the temperature control process is as shown in Figure 3 .

[0155] g) After the sintering is completed, remove the carrier with the solid flame color reagent attached to it;

[0156] h) Perform a local peeling, polishing, and other cleaning treatment on the solid flame color reagent attached to the surface of the carrier or filled into the interior of the carrier, and detect the appearance to ensure that it meets the requirements.

[0157] The carrier used in this embodiment is irregular in shape. The solid flame color reagent attached to the surface of the carrier obtained by the forming method of the present application is uniform in thickness, about 12.6 mm, and the flame color reaction is deep orange (electromagnetic wave frequency 482-489 THz), and the flame color reaction time is 10 days.

[0158] The present application is described in detail above in connection with specific embodiments and exemplary examples, but the description is not to be construed to limit the present application. It will be understood by those skilled in the art that various equivalents, modifications and substitutions can be made to the present application and its embodiments without departing from the spirit and scope of the present application, and these are to be construed to fall within the scope of the present application. The scope of the present application is defined by the appended claims.

[0159] The contents not described in detail in the specification of the present application are known to those skilled in the art.

Claims

1. A forming process for a solid flame color reagent, characterized in that, The solid flame color reaction agent is prepared by using the following raw material components with the mass percentage: Sodium silicate 85%~93%; Sodium carbonate 0%~9%; Color developing agent 6%~7%; The sum of the mass percentage of sodium silicate, sodium carbonate and color developing agent is 100%; The sodium silicate is Na2·2.8SiO2 solution, Na2·2.4SiO2 solution or Na2·2.2SiO2 solution with the concentration not less than 45° Baume; Or the sodium silicate is solid-state zero-water metasilicate sodium; The color developing agent is a mixture of strontium chloride and calcium chloride with the mass ratio of 1:1; The above raw material components are mixed uniformly to obtain a mixture; the carrier is buried in the mixture and then sintered to form a carrier with the solid flame color reaction agent attached thereto; The sintering and forming are performed by using a muffle furnace, and the program-controlled heating steps of the muffle furnace are as follows: (1) The furnace temperature is uniformly increased from room temperature to 100~200℃ at a speed of 10~20 min; (2) The furnace temperature is kept at 100~200℃ for 10~20 min; (3) The furnace temperature is uniformly increased from 100~200℃ to 350~400℃ at a speed of 10~20 min; (4) The furnace temperature is kept at 350~400℃ for 20~40 min; (5) The furnace temperature is uniformly increased from 350~400℃ to 900~1000℃ at a speed of 50~70 min; (6) The furnace temperature is kept at 900~1000℃ for 20~40 min; (7) The furnace temperature is uniformly decreased from 900~1000℃ to 350~400℃ at a speed of 50~70 min; (8) The furnace temperature is naturally cooled from 350~400℃ to room temperature; The solid flame color reaction agent is attached to the surface of the carrier, the inside of the hollow carrier or the pores of the porous structure carrier; The solid flame color reaction agent attached to the carrier is a porous medium compound; The thickness of the solid flame color reaction agent attached to the carrier is 10~15 mm, and the flame color reaction time of the solid flame color reaction agent is ≥7 days.

2. A process for forming a solid flame color reagent according to claim 1, wherein The material of the carrier is metal or ceramic.

3. A process for forming a solid flame color reagent as defined in claim 1, wherein The method for mixing the raw material components uniformly to obtain the mixture is as follows: The sodium carbonate is crushed and sieved, and the undersize is placed in a crucible; The color developing agent is crushed and sieved, and the undersize is placed in a crucible; The sodium silicate is poured into the crucible containing the sodium carbonate and the color developing agent, and stirred uniformly.

4. A process for forming a solid flame color reagent as defined in claim 1, wherein Further comprising: The solid flame color reaction agent attached to the carrier is partially stripped or polished to meet the appearance requirements.

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