Construction of Zhuocheng Mica Equipment Project invested 100 million yuan in Yifeng County

The project, with a total investment of 100 million yuan and an area of 25 mu, mainly produces cable fire-resistant mica tape and mica products. It is expected to be officially put into production by the end of May next year. After reaching the production capacity and reaching the standard, it can achieve an annual production capacity of 7000 tons, with an estimated annual output value of more than 250 million yuan. (Ren Zhihui, Long Xiaolin)

Advantages and disadvantages of natural mica

Under the long-term scouring of high temperature and high pressure water, the natural mica will undergo hydration reaction, which will make the mica discolor, delaminate, scale, wet and even break. Natural muscovite began to lose weight from 200 ℃, and began to decompose when the temperature was higher than 450 ℃, and the thickness expanded, and it lost weight sharply above 600 ℃, and almost completely decomposed at 900 ℃.

Anti-corrosion and waterproof function of mica flake and mica powder

Mica is divided into different qualities according to its sand content, color and flaky structure. A variety of mica products of different quality, mica flakes and mica powder have different uses.

Effect of Mica on the Wettability of Coatings

In the process of lost foam casting, the effective application of coating containing mica is very important. Mica coating enables the mold to form a layer of coating on its surface when it is in foam pattern, which plays the role of "protection", "support" and "isolation". During liquid metal filling, the first is the transport of high-temperature decomposition products of foam pattern through the coating. Its transmission is affected by the type and quantity of decomposition products, coating characteristics and pressure. The coating layer containing mica component should not only separate the metal liquid that has replaced the foam pattern from the dry sand without binder behind it, but also form a "barrier" between molding sand and metal liquid to prevent sand sticking; What is more important is to keep the cavity stable while allowing the products of thermal decomposition of the pattern (including liquefied objects and vaporized objects) to pass smoothly. If the liquid decomposition products of the liquefied pattern can seep out through the coating in time, it is undoubtedly very beneficial to the smooth filling of the mold and the guarantee and improvement of the casting quality