Cyanite a group of things with common features the application of raw material
From;    Author:Stand originally
According to cyanite a group of things with common features the characteristic of raw material, its basically are centered in 4 respects in the application of fireproof material domain

(1) with cyanite a group of things with common features raw material gives priority to body, make a brick directly, have most with andalusite brick representative.

(2) with cyanite a group of things with common features raw material is accretion, improve the high temperature capability of refractory products, if raise its,fight creep function and heatproof shake function to wait.

(3) use at adventitious fireproof material, the most commonly used is the systole that cyanite compensates high temperature to fall as expander, prevent a structure to flake.

(4) with cyanite a group of things with common features raw material synthesizes Molaishi.

1. Andalusite is used at making a brick directly

Andalusite characteristic is apparent; Mo Laishi changes temperature low; The heat in changing a course expands low; Crystallization is bulky, can use at doing orthopaedics. These all making that andalusite can be not used at making directly via to calcine firing or do not burn firebrick, save a large number of the sources of energy.

2. Improve the performance of fireproof material

The application of cyanite, andalusite and silicon line stone in this respect is relatively general, act well to basically reflect in 3 respects: It is to raise the loading softening point of firebrick to reach fight creep ability; 2 it is the thermal shock stability that improves fireproof product; 3 be those who adjust refractory products is firing and contractive.

Tall aluminous brick is in low creep successfully our country is used in large hot-blast stove, it is through adding silicon line stone, or andalusite, or cyanite is right tall aluminium is qualitative the result of fireproof modified.

Cyanite is used in practice a group of things with common features mineral improvement is fireproof the example of stability of material thermal shock is very much, have most representative should belong to the Mo Laishi pit that is used at ceramics industry to provide with cordierite - kiln provides Molaishi. As a result of the characteristic of use condition, the life that kiln has depends on stability of its thermal shock. Germany mixes silicon line stone the earliest andalusite is used at kiln to provide, replace one part to synthesize Molaishi, its advantage besides prolonging the life that kiln has, still can reduce kiln to have cost.

About adding cyanite a group of things with common features mineral the mechanism that increases stability of fireproof material thermal shock, think to have two kinds of reasons commonly: One of, additive cyanite a group of things with common features Mo Laishi of mineral translate into, raised Mo Laishi content, grow at the same time columnar not come to what stone forms to interweave the structure is advantageous to thermal shock stability; Secondly, mineral unfinished not comes to cyanite completely petrifaction, form structure of polyphase composite material, use each of mineral coefficient of expansion break match and increase thermal shock stability.
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