Limestone from mining to mill grinding into powder applied to the whole process of wall coating

Limestone used as wall materials, there are two methods, one is the high temperature calcination of mature lime, the other is directly by the Raymond mill grinding into lime powder, both methods can achieve the fineness of the wall materials requirements, wall paint putty powder 325 mesh or so, usually milling equipment can achieve the needs of this particle size. Here we come one by one to see the specific process of the two production processes:

Lime calcined at high temperatures to mature lime, limestone mined from the mine is calcium carbonate (CaCO3), commonly known as quicklime, the object is larger, to be crushed by the jaw crusher and other crushing, such as high-temperature calcination by the rotary kiln will become calcium oxide (CaO), calcium oxide in contact with water will become the final calcium hydroxide Ca (OH) 2, after two magnificent chemical transformation, and eventually become a white wall coating, the wall coating, the most primitive aspect of this aspect is also the most primitive and most ancient form of wall coating. This aspect is also the most primitive and ancient, can not help but think back to when I was a child, my family built a house to dig a large limestone pool, in which the scene of boiled eggs. Specific chemical reactions are as follows:

By the above chemical reaction can be seen: in the process of high-temperature calcination will produce a lot of carbon dioxide, the world is advocating low-carbon environmental protection, it is clear that this production process is unscientific, environmentally friendly, although the production cost is low, but in terms of long-term development, this production process is bound to slowly emerging technologies out. The emergence of Raymond mill, limestone can be directly ground into powder for its wall coating use, the middle of the production process without carbon dioxide. The entire milling production line also needs to be equipped with a small jaw crusher for pre-grinding crushing, the right size of the material can be entered into the Raymond mill grinding, grinding production process for a complete set of closed system, equipped with environmentally friendly bag dust collector or pulse dust collector, which can effectively reduce the overflow of dust. The powder produced by this mill can be used directly, compared with the former process, saving a lot of time, and the mill is a vertical structure, in the use of space is more economical and effective, so the limestone mill has now been a large number of input into the market, and by the user trust and support.

The emergence of Raymond mill so that how many ore resource value can be reflected, commonly used putty powder in addition to lime powder, there are gypsum powder, talcum powder, etc. are also made by grinding and grinding, so Raymond mill is also the gospel of the new materials for the wall, there is no mill, the decoration of the wall materials is difficult to get a rapid development.

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