2015年5月29日星期五

The main factor of refractory high temperature creep

The factors that affect the high temperature creep of refractory are many, and many factors are interrelated… The main factors that affect the creep deformation of refractory are the following:
1, refractory material, including: chemical composition, mineral composition (single phase or refractory brickmultiphase), microstructure.
2, the outside conditions in effect, including: temperature, load, and time, atmosphere (oxidative or reductive).
3, the chemical mineral composition and microstructure of refractory materials determine the creep resistance of the materials.
4, in phase composition to determine the basic conditions, high bulk density, compressive strength, porosity low refractory products, creep resistance is better, but with the increase of temperature and time increase, refractory material stress will be increased creep deformation will increase.

2015年5月27日星期三

Experts teach you how to distinguish the quality of refractory brick

Xinmi Changxing refractories experts teach you to identify the quality of refractory brick:
fire brickIn general, according to the contents of various chemical constituents in the refractory brick and its role, it is divided into three categories of main ingredients, impurities and added ingredients.
The main ingredient in the refractory brick is the majority of the material, and the chemical composition of the high temperature character of the material is decisive… Why refractory brick can have excellent resistance to the high temperature effect, and many refractory materials and each characteristic? Completely or basically according to the contents of various chemical components in the refractory and its role, it is usually divided into three types of main components, impurities and the added ingredients.
Impurities are those in refractory material in different principal component, content of fractional and high heat resistance properties of the refractory often bring the harm of chemical composition. This chemical composition is carried from the raw material containing the main ingredients…
The main ingredient in the refractory brick is the majority, and the chemical constituents of the high temperature properties of the material are decisive… The reason why the refractory brick has good resistance to high temperature, and many refractory materials also eachrefractory brickcharacteristic, completely or basically depends on the principal components. Therefore, the main ingredients of refractory must be fully paid attention to. Usually on refractory materials according to the chemical composition and classification, and on many of the same material refractory material is divided into several levels, is mostly according to the main components of the kinds and content of the amount. Can be used as refractory materials are main components with a high melting point high lattice energy or high temperature decomposition of elements or compounds.
The price of fire brick should be based on your output, the type of refractory brick, and other factors to determine the type of fire brick, can determine the price of fire brick.

2015年5月25日星期一

Definition and application of refractory ball

Refractory ceramic balls refractory ball in alumina industry and refractory kaolin as the main raw material, scientific formula, made of forming and high temperature fire brickfiring, it has 1 high mechanical strength, long life cycle; 2. Good chemical stability, and the material is not a chemical reaction; 3. High temperature resistant performance is good; the highest temperature heat-resistant ceramic balls refractory can reach 1900. Especially in the fertilizer plant of high and low temperature transformation furnace, reformer, hydrogenation, desulfurization tank and machination furnace, dispersed liquid, gas and support, to cover and protect the catalyst role. Refractory porcelain ball can also be used in the iron and steel industry hot air stove and heating converter equipment.
Refractory ceramic balls into resistant to ordinary ball and high aluminum refractory ball, ordinary refractory ball used in sulfuric acid and fertilizer industries converter and transform furnace, high aluminum refractory ball is suitable for industries such as steel, urea, hot blast furnace, heating and transformation furnace and other equipment.