Effect of water on brucite

Brucite


Brucite is also known as brucite Mg (OH) 2. Hardness: 2.5. The single crystal is in the form of thick plate, and the common one is the lamellar aggregate; Sometimes it forms a fibrous aggregate, which is called nemalite or brucite asbestos. Brucite also often forms the illusion of periclase.


01 Application field of brucite


1. Extraction of Mg and MgO raw materials: Mg and MgO are extracted from brucite, and the content of MgO in the ore is high, with few impurities; Low decomposition temperature; The volatiles produced during heating are non-toxic and harmless, so products such as Mg and MgO can be extracted from brucite.


2. Reburned magnesia: mainly used for producing magnesia refractory materials. Magnesia-carbon brick, magnesia-chrome brick, etc. are widely used in modern steel industry. The amount of such MgO has exceeded 1/2 of its output.


3. Light magnesium oxide: light MgO is extracted from low-grade brucite rock by chemical method.


4. Fused periclase: It is a very pure product required by high-tech electronic products.


5. Chemically pure magnesium reagent: by electrothermal method, metal magnesium can be extracted to produce chemically pure reagents such as MgCl2, MgSO4, Mg (NO3) 2.


6. Reinforcing material: brucite can be used as a substitute for chrysotile in some fields..


7. Flame retardant: The test of making flame retardant based on polypropylene shows that brucite has good flame retardant effect and is an ideal non-toxic, smokeless, pollution-free, high-temperature flame retardant. At the same time, it can play the role of filler reinforcement.


8. Papermaking filler: Brucite has high whiteness, good flaking, strong adhesion and poor water absorption.


9. Crafts: The dense block of brucite is rich in color, uniform in texture, good in transparency, and fine and smooth; It often forms natural stripes and patterns with other minerals or varieties, and has ornamental value. Therefore, it can be carved into handicrafts.


02 Water content of brucite


1. Moisture content of superior products ≤ 0.5% 2. Moisture content of qualified products ≤ 1%


03 Effect of water content of brucite


The water content is one of the important indicators in the detection indicators of flame retardant chemical brucite products. The water content directly affects the application of downstream customers' products. If the moisture content of the flame retardant chemical brucite product is on the high side, adding it to the flame retardant product may affect the application performance of the product, and the application performance of the flame retardant product may be affected by foaming and steam overflow during the processing of the product, resulting in the appearance or internal defects of the flame retardant product.


04 Test method for water content of brucite


1. Oven method: dry the sample in an electric constant temperature drying oven at 105C ± 2C until the mass is constant, and determine the moisture content according to the mass reduction before and after drying.


2. Rapid moisture meter method: put the brucite sample into the sample tray of the moisture meter, start heating, and produce the test results in 3-5 minutes