Water magnesium stone coating equipment, modified activation machine, powder dryer

Release time:

2024-11-27 08:47

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As a flame retardant filler, hydromagnesite has many advantages such as good thermal stability, non-toxicity, smoke suppression, non-volatility, and low cost, which has attracted widespread attention both domestically and internationally. In terms of application, it can be used to extract. Mg and MgO raw materials, with high MgO content and low impurities in the ore, low decomposition temperature, and the volatile.powder.It is non-toxic and harmless; it can also be used to produce reburned magnesia, which is used in modern steel industry for magnesia-carbon bricks, magnesia-chrome bricks, etc., with advantages such as high density (.>3.559/cm³), high refractoriness (>2800℃), high chemical inertness, and high thermal shock stability..

At the same time, fibrous hydromagnesite is an excellent reinforcement and strengthening material, currently mainly used in the production of microporous calcium silicate and calcium silicate boards, as well as mid-range insulation materials and silicate cement concrete. The low-grade fiber-prepared hydromagnesite fiber cement concrete has been applied in highway construction..

In addition, hydromagnesite has high whiteness, good flakiness, strong adhesion, and relatively poor water absorption, and can be used in combination with calcite as a filler for papermaking; it can also produce magnesium hydroxide flame retardants, which have both filling and flame-retardant dual functions, are halogen-free, and belong to non-halogen flame retardants, with high processing temperatures and a starting decomposition temperature much higher than that of aluminum hydroxide, reaching. 320℃, but it has the disadvantages of low flame retardant efficiency and difficulty in uniform dispersion in organic polymers..

Since hydromagnesite is a highly polar inorganic mineral, it has poor compatibility with polymer materials, making it difficult to form a good interfacial bond, which severely limits the application of hydromagnesite. To ensure that the mechanical properties of the composite material after addition are within the applicable range, surface modification treatment must be performed.

Anionic surfactants are divided into four categories: carboxylic acids, sulfonic acids, sulfuric acids, and phosphoric acids. There are significant differences in the modification effects on hydromagnesite among different categories.

In the case of determining the modifier,mechanical equipment such as a honeycomb mill can be used to assist in the modification of hydromagnesite. The honeycomb mill modification process is a pneumatic system where the powder is transported by air flow into the atomized modifier system chamber to intertwine and combine with the modifier, forming a single-layer nano-coating film, completing the modification.

With the help of the honeycomb mill, the surface energy of hydromagnesite powder after carboxylate and phosphate modification can be significantly reduced. This precise feeding and stable control technology ensures the stability and consistency of the modification process, effectively improving the modification effect of materials such as hydromagnesite. Moreover, the honeycomb mill can apply more than two coating media simultaneously when processing functional materials that require surface treatment, making it suitable for various materials including hydromagnesite.It can alsosynchronously achieve grinding, drying, sorting,spheronization, anddrying and depolymerizing wet grinding filter cakes and slurries. The coating rate can reach 99.2%, and the activation rate reaches 99.8%..It can be produced continuously, with large equipment scale, high output, stable and reliable operation, suitable for large-scale industrial production. It can meet the large-scale modification needs of materials such as hydromagnesite.

 

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