Direct Bonded Magnesia-Chrome brick

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Features

Because of the advantage of easily adheringkiln crust and strong erosion resistance, the direct bonded magnesia chromebrick has acting the unchangeable part in burning zone of cement rotary kiln. However,the problem that magnesia chrome brick for cement kiln causes pollution becomesincreasing prominent, and the call for chrome free brick for cement kiln is increasing.

Before thecement industry eliminates magnesia chrome brick, direct bonded low chrome magnesiachrome brick should be chosen and used reasonably to decrease the pollution ofsexavalent chrome as far as possible and ensure the normal operation of cementkiln. Direct bonded low chrome magnesia chrome brick is featured with lowchrome content, high refractoriness under load, high crushing strength, andgood corrosion resistance.

Applications

   Thebrick is an ideal transition product for all kinds of direct bonded magnesia chromebrick for cement rotary kiln burning zone before chrome free brick is used incement kiln.

item

index

MgO,%                              

88

Cr203

3-5

SiO2,%                              

1

Apparent porosity, %                  

17

Refractoriness under load℃[0.2MPa×0.6%] ≥

1700

Cold crushing strength  MPa              

60

Thermal shock resistance,time  

[1100   water-cooling]                

7


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Q:What are the types of magnesia chrome bricks for industrial use?
It is possible to judge by the concrete kiln. The magnesium chrome bricks produced by real gold company are very good. Our factory purchased them the year before last, and their technicians were very professional, and gave us very good suggestions.
Q:Process for producing magnesia chrome brick?
The fine powder compacts after calcination produced by magnesia - chrome ore grinding method, brick with magnesia coarse particles, are effective measures to eliminate the effect of loose. Compared with the common magnesia chrome brick, the magnesia chrome brick made by this method has lower porosity, higher compressive strength, higher softening temperature and higher flexural strength. Compacts with chrome magnesite powder, magnesia chrome brick by synthetic magnesia chrome sand made of high-temperature calcination, slag resistance and high temperature strength are better than other magnesite chrome brick.In addition, magnesite brick and electric arc furnace melting magnesium chromium material by direct casting (see Figure microstructure, color), fused magnesia chrome brick material produced by the process of melting particles combined with magnesia chrome brick etc..
Q:Magnesia chrome brick
The fine powder compacts after calcination produced by magnesia - chrome ore grinding method, brick with magnesia coarse particles, are effective measures to eliminate the effect of loose. Compared with the common magnesia chrome brick, the magnesia chrome brick made by this method has lower porosity, higher compressive strength, higher softening temperature and higher flexural strength. Compacts with chrome magnesite powder, magnesia chrome brick by synthetic magnesia chrome sand made of high-temperature calcination, slag resistance and high temperature strength are better than other magnesite chrome brick.
Q:What are the environmental hazards of magnesia chrome refractory bricks?
Magnesia chrome brick with MgO and Cr2O3 as the main component of this kind of brick, high refractoriness, high strength, anti alkaline slag corrosion resistance, excellent thermal stability, has certain adaptability in industry wide application of now high temperature acid slag
Q:How much is magnesium chrome brick a ton?
Magnesium chrome bricks according to physical and chemical indicators in order to know the specific price, the production of magnesia chrome brick place a lot
Q:With different capacitance magnesia brick brick?
Fused magnesia brick brick has compact structure, high mechanical strength,
Q:What is a half combination of magnesia chrome bricks?
Opacifying particles as periclase spinel crystal structure, fully developed, as part of account of solution structure and matrix.
Q:What is the difference between magnesia chrome brick and direct bonded magnesia chrome brick?
The magnesium chromium brick with the direct bonded magnesia chrome brick is different: 1 with the purity of magnesia (raw materials) 2: the sintering temperature of common magnesia chrome brick sintering temperature at 1550 DEG ~1600 DEG, direct the magnesium chromium brick sintering temperature is over 1700 DEG C, because of its more than 1700 DEG C, magnesia chrome brick microstructure occurred change, and periclase chromium ore directly combined, so called direct bonded magnesia chrome brick
Q:Magnesium chrome brick price?
Magnesia brick factory with strong technology foundation as the basis, has developed more than 40 varieties of products, including building materials, non-ferrous metals, iron and steel and other fields, won the national high-tech products nearly a dozen, four patents, including magnesia spinel brick reached the world advanced levelFrom July 2006 to now won the high-tech enterprises in Liaoning province; National Standardization Management Committee issued the "adopting international standard product certificate" enterprises; in 2009 passed the ISO9001 quality management system certification; the famous brand products of Liaoning Province certificate certificate and certificate management, the reliable guarantee for the quality of products.
Q:How many kinds of refractory bricks are there?
High aluminum brick: Al2O3 content more than 75 higher than that of the refractory clay brick, anti corrosion resistance, suitable for cement kiln etc., long service life, but high price.

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