发表时间:2018-08-07
(1) The brucite asbestos produced in Sichuan is light green to colorless, the fiber is coarse and brittle, inelastic and flexible, easy to break, good splitting. Fine fiber is transparent and colorless, with glass luster, like artificial glass fiber.
2. Easy to dissolve in hydrochloric acid, no bubble.
3. The blowpipe flame is not melted, glowing at ignition, and weakly alkaline after burning. After ignition, add cobalt nitrate solution and then burn it to light red. Heat is applied to the raw water in the closed pipe, turning the ash into brown, and the manganese containing variety becomes dark brown.
(4) the resources of the Chinese serpentine are rich, but because of the lack of geological work, there are few reports on the brucite sites. The main known points are as follows: Dandong in Liaoning, Xixia in Henan, and Ningqiang in Shaanxi. The exploitation and utilization of the deposit of Ningqiang black wood forest is early.
5 at present, the origin of brucite in Liaoning is Dandong area, which is mainly used as flame retardant material.