Natural brucite is usually used to make refractory materials, such as lightly burned powder. Refractory materials are cheap and have poor economic benefits; the ultrafine brucite flame retardant produced by ultrafine crushing of brucite is a high-tech product with a high price, more than four times the price of light burnt powder, with high added value and economic benefits. As a manufacturer of ultrafine brucite grinders, Guilin Hongcheng will introduce to you today the ultrafine grinding of brucite and the uses of ultrafine brucite flame retardants.
The production process of ultrafine brucite flame retardant consists of ultrafine crushing of brucite and powder surface modification. Ultrafine brucite flame retardant is a new environmentally friendly product. When the materials produced by it are burned, very little toxic gas is produced, which protects the environment and greatly reduces the occurrence of human poisoning incidents caused by burning materials. Utilizing natural brucite powder ore waste to produce ultrafine brucite flame retardant products through ultrafine crushing of brucite is a mine resource reuse project, which is in line with the national circular economy development strategy; at the same time, it reduces the natural brucite powder ore waste everywhere The secondary pollution of dust caused by wind blowing when stacking is also an environmental protection project.
Flame retardants are additives that make polymers less likely to catch fire and slow down their burning after they catch fire. Halogen flame retardants are widely used because they have good flame retardant effects and do not affect the physical and chemical properties of materials. Polymers with added halogen flame retardants produce large amounts of smoke when burned, and can easily release corrosive gases (such as HC1, HBr, etc.) and harmful gases, which can easily cause secondary hazards. Today's environmental protection requirements are getting higher and higher, and the use of halogen-containing organic flame retardants has been restricted. Environmental protection organizations in European Community countries have issued decrees banning halogen-containing flame retardants from entering the European market. Halogen-containing organic flame retardants will also be restricted, creating a lot of room for the development of inorganic flame retardants. Producing excellent natural inorganic flame retardants is an urgent requirement for green and environmental protection.
Ultrafine brucite flame retardant is a high-tech environmentally friendly inorganic flame retardant product that does not contain halogen. When applied, it relies on chemical decomposition to absorb heat and release water to act as a flame retardant. It is non-toxic and does not corrode processing machinery. The chemical properties of the magnesium oxide generated after decomposition are stable and do not cause secondary harm. It is a fast-developing and environmentally friendly flame retardant.
Purpose of ultrafine brucite flame retardant: Ultrafine brucite flame retardant promotes carbonization of polymers and is a replacement product of organic flame retardant. Compared with aluminum hydroxide, magnesium hydroxide has a higher decomposition temperature (hydrogen Aluminum oxide is around 220°C, while magnesium hydroxide is around 350~400°C), which is more suitable for the processing requirements of certain polymers and also promotes carbonization of polymers. In recent years, the application field of magnesium hydroxide flame retardant is constantly expanding. Ultrafine brucite flame retardant is made from the natural mineral brucite after being ultrafinely crushed to the required particle size and then surface modified. In addition to having a flame retardant effect in synthetic materials, it also has the ability to inhibit smoke and hydrogen chloride generation. function, and makes the material non-toxic and non-corrosive. Due to the high thermal decomposition temperature, synthetic materials added with magnesium hydroxide can withstand high processing temperatures, which is beneficial to speeding up the extrusion speed, shortening the molding time, and helping to improve the flame retardant efficiency. The particle size of magnesium hydroxide is fine, causing little wear and tear on equipment, which is beneficial to extending the service life of processing equipment. At the same time, raw materials are easily available and the production cost is low. It can be widely used in polypropylene, polyethylene, polyvinyl chloride, high-impact polystyrene and ABS. and other fields. Mainly used in wire and cable materials (such as PVC, XLPE, EVA, EPDM), various unsaturated polymer materials (PE, PP), EPDM rubber and various construction and decoration materials industries. It is a replacement product of organic flame retardants and one of the development directions of flame retardant technology at home and abroad.
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Brucite ultrafine crushing technology and equipment: The particle size of brucite powder ore waste is less than 5mm, and the fineness of ultrafine brucite flame retardant is required to be less than 10μm. Brucitee ultrafine crushing process equipment is used to produce ultrafine brucite retardants. The key to fuel products. At present, the main mineral fine grinding equipment is Raymond crusher, ball mill, jet mill, etc. These equipment produce ultrafine powder below 10 μm, with extremely low productivity and high energy consumption. In view of this situation, Guilin Hongcheng recommends that you choose HLMX ultra-fine vertical mill for ultra-fine crushing of brucite. The HLMX series ultra-fine vertical mill is a large-scale ultra-fine vertical mill developed by Guilin Hongcheng on the basis of the HLM vertical mill, which is suitable for the development requirements of my country's non-metallic mineral industry. It has been used in calcium carbonate, Baiyun Stone, silica, graphite and other industries have been successfully applied in the market, and the technology and technology are mature. It is an ideal equipment for large-scale production of environmentally friendly and energy-saving ultrafine powder. The production capacity of a single machine is large, with an output of up to 50t/h, which is equivalent to more than 5 micro-powder mills. It can utilize low-peak electricity to produce products with the same fineness, which saves 30-50% of energy compared with ordinary mills, making it more efficient and energy-saving. The system adopts PLC automatic control to automatically adjust and record the system's pressure, temperature, feeding volume, dry cooling air volume and other parameters, and monitor the operation of the equipment, etc., which can effectively control product quality.
In the market of inorganic flame retardants, aluminum hydroxide was developed earlier than magnesium hydroxide. Both are currently recognized flame retardants with the three major functions of flame retardant, smoke suppression and filling. Under the same filling amount, hydrogen Magnesium oxide flame retardant is better than aluminum hydroxide. Aluminum hydroxide material needs to be synthesized and the cost is high. Products directly processed from natural brucite have the same performance as synthetic products, but the price is low, which makes it easy for application manufacturers to accept it. Therefore, ultrafine brucite flame retardants have greater room for development. If you have production needs for ultrafine brucite flame retardants and need to know more about ultrafine brucite crushing equipment and technical information, please leave us a message.
