Magnesite-chrome Bricks

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Magnesite chrome bricks in magnesium oxide (MgO style) and chromium trioxide (Cr2O3) as main component, and periclase spinel as main mineral components of refractory products.This kind of bricks of high refractoriness, high temperature strength, strong alkaline slag erosion resistance, good thermal stability, also has certain adaptability for acid slag.The main raw material of manufacturing magnesite-chrome brick is sintered magnesite and chromite.Magnesia raw material purity as high as possible, chromite chemical composition requirement is: the Cr2O3:30 ~ 45%, CaO: 1.0 ~ 1.5% or less.

Production technology of calcined magnesite chrome bricks in line with magnesia brick.In order to eliminate the bricks in burning process because of MgO style and Cr2O3, Al2O3, or
Directly combined magnesite chrome brick
Directly combined magnesite chrome brick
Iron oxide reaction caused by the expansion of the spinel as of loose effect, also can use common sintering synthetic materials made from magnesite chrome brick.In addition, there is not burned magnesite chrome brick, for example, combined with inorganic magnesium salt solution is not burned

magnesite chrome brick.Don't burned magnesite chrome brick production technology is simple, low cost, heat stability, but the high temperature strength far less burnt brick.The late '50 s, develop a socalled "direct combination" magnesite chrome brick.The characteristics of this kind of brick is

pure raw materials, sintering temperature is high, the periclase, spinel, such as direct combination between high temperature phase, such as low silicate phase for the island shape distribution, therefore, significantly improve the high temperature strength and slag resistance of the brick.
With chrome ore - magnesia compact grinding calcined after fine powder, and magnesia bricks made of coarse particle with method, is an

effective measure to eliminate the effect of loose.Magnesite chrome brick made of using this method, compared with common magnesia chrome brick, brick of low porosity, compressive strength, high refractoriness under load and the bending strength.With chrome ore - magnesite powder compact, high-temperature synthesis of calcined magnesite chrome magnesia-chrome brick made of sand, slag resistance and high temperature strength are better than other magnesite chrome brick.
In addition, there is electricity solitary furnace molten magnesite chrome material directly casting and fused magnesite chrome brick

(see figure of microstructure, see image), electricity melt magnesium chrome material according to the production of brick melt granule recombination magnesite chrome brick, etc.

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Q:With different capacitance magnesia brick brick?
Hello, the magnesium chromium brick into common magnesia chrome brick, magnesia chrome bricks, half magnesia chrome brick, magnesia chrome brick, semi fused magnesia chrome brick, unburned magnesia chrome brick, magnesia chrome brick and magnesia chrome brick and directly combined with the distinction lies in 1: containing magnesia (raw material) the purity of 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 change and periclase chromium ore directly combined, so called direct bonded magnesia chrome brick. The performance of direct bonding magnesia chrome brick is better than that of common magnesia chrome brick
Q:What is the difference between magnesia chrome brick and direct bonded magnesia chrome brick?
The performance of direct bonding magnesia chrome brick is better than that of common magnesia chrome brick.
Q:What are the differences between magnesium chrome bricks, such as direct bonding, re bonding, semi bonding, CO sintering and chemical bonding? Hope expert advice..
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:Magnesium chrome brick price?
Dashiqiao magnesium brick factory of China Building Materials Academy is a joint stock company invested, constructed and managed by China Building Materials Academy.The plant was built in 1992, officially put into operation in 1993, covers an area of 89 thousand square meters, has a long 118 meters, an annual output of 30 thousand tons of high temperature tunnel kiln production line. The group has 1200 employees, 6 senior engineers, more than 20 engineers and technicians, and has strong technical force. Group's total assets of 5.5 million, with an annual output value of 600 million. Profit and tax 65 million yuan.
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:Magnesia chrome brick
Magnesia chrome brick to Magnesium Oxide (MgO) and chromium oxide (Cr2O3) as the main ingredient, refractory periclase and spinel as main mineral components of products. The bricks have high refractoriness, high temperature strength, strong resistance to alkaline slag, good thermal stability, and certain adaptability to acid slag. The main raw materials for making magnesia chrome bricks are sintered magnesia and chromite. The purity of magnesia raw materials should be as high as possible, chrome iron ore chemical composition requirements: Cr2O3:30 - 45%, CaO = 1 ~ 1.5%.
Q:Process for producing magnesia chrome brick?
The oxide of iron reacts to produce a loose effect caused by the expansion of the spinel. Also, the magnesia chrome brick can be made from the synthetic common sintered material. In addition, there are non burned magnesia chrome bricks, for example, non burned magnesia chrome bricks combined with inorganic magnesium salt solutions. The unfired magnesia chrome brick has the advantages of simple production process, low cost and good thermal stability, but the strength of the high temperature is far less than that of the burnt brick. In the late 50s, a so-called "direct bonding" magnesia chrome brick was developed. The characteristics of this brick raw material is pure, high firing temperature, periclase and spinel phase with high temperature directly, silicate and other low melting point phase for island distribution, therefore, significantly improve the high temperature strength and slag resistance of brick.
Q:What is a half combination of magnesia chrome bricks?
Direct binding for magnesium magnesium rock stone or periclase spinel crystals, silicate phases were isolated in the grain asked. Half combined with thermal shock resistance than magnesia chrome brick direct bonded magnesia chrome brick, and about half combined with the characteristics of magnesia chrome brick, some physical and chemical indicators. I don't understand, I know there is a production of magnesia chrome brick factory technicians understand this, is known as gold refractory material factory.
Q:What are the types of magnesia chrome bricks for industrial use?
1. burned magnesia chrome bricks 2. magnesia chrome bricks 3. semi bonded magnesia chrome brick and magnesia chrome brick generally is the three
Q:What are the main raw materials of magnesia chrome bricks?
At present the most widely used are magnesium aluminum alloy, followed by magnesium manganese alloy and magnesium zinc zirconium alloy. Mainly used in aviation, aerospace, transportation, chemical, rocket and other industrial sectors. In practical metals, it is the lightest metal, and the specific gravity of magnesium is about 2/3 of aluminum and 1/4 of iron. It is the lightest metal in practical metals, high strength and high rigidity.

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