Fused Magnesite Chrome Sinter

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Fused magnesite chrome sinter
1.Low Chrome ,Medium Chrome ,High Chrome
2.high bulk density
3.offer free sample

Fused magnesite chrome sinter

Finished Fused Mag-Chrome is made of high-quality chrome concentrate and high purity magnesite at accurate proportion, adjusting Cr2O3 content from high chrome to low chrome, in order to achieve low impurity content and high bulk density, as well as meet different needs. after molding into brick with our clincker, it is widely used in secondary refining device for RH,VOD,AOD and non-ferrous metallurgical furnace.

High Chrome (Cr2O3  32-99%)

Specification(%)

               

SiO2                 (max)

Fe2O3                      (max)

MgO     (min)    

Cr2O3       (min)  

B.D.      (min)

Cr  32

1.2

11.5

45

32

3.75

Cr  36

1.2

13

40

36

3.80

Cr  83

0.5

0.5

18

77-83

Cr  99

0.5

0.5

0.5

98.5

Medium Chrome (Cr2O3 20-30%)

Specification

(%)

       

SiO2(max)        

Fe2O3(max)          

Al2O3(max)          

CaO(max)        

MgO(min)        

Cr2O3(min)        

B.D.(min)        

Cr20      

1

11.5

5-7

1.2

58

20

3.70

Cr20

1

8

5

1.2

65

20

3.65

Cr25

1.2

10

6

1

55

25

3.70

Cr30

1.2

11

6

1

50

30

3.70

Low Chrome (Cr2O3  14-18%)

Specification

(%)

SiO2(max)      

Fe2O3(max)        

Al2O3(max)          

CaO  (max)        

MgO(min)        

Cr2O3(min)        

B.D.          

Cr14            

1

6

4

1.2

75

14

3.60

Cr16

1

6.5

5

1.2

70

16

3.65

Cr18

1

8

6

1.2

65

18

3.65

Cr18

1

11.5

7

1.2

60

18

3.70

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Q:Can polystyrene foam color steel plate be used as decorative fireproofing material ?
No, only non-combustible product can prevent fire. Most polystyrene foam boards are flammable which cannot prevent fire. Polyphenyl can only retard flame, highest fire retardant fire rating being B1 level. Under the same conditions, fireproof performance of polystyrene foam board will be better because most extruded sheets are made by recycling materials and contain much more impurities which will affect flame resisting property. The second reason is that high temperature in extruded sheet manufacturing technique will decompose part of flame retardants. For B1 level extruded sheet, it is difficult to reach 30 burning oxygen index, while for B2 level, it is hard to reach 32. So polyphenyl board is safer.
Q:What are the construction measures of refractory material in winter? Please descriptive briefly.
The temperature is low in winter, so refractory bulk materials should be stirred evenly on time to avoid freezing.
Q:How much is the content of boron carbide in refractory material?
furthermore, aluminite powder costs only ¥20,000/ton, and the addition is only 0.1%—2%, or just none; while boron carbide costs ¥50,000/ton.
Q:What kinds of fireproof and fire retardant materials are there?
fireproof materials are mainly non-combustible A material and flame retardant B1materials. Class A non-combustible material: Granite, marble, terrazzo, cement products, concrete products, plasterboard, lime products, clay, glass, tiles, mosaics, steel, aluminum, copper alloy; B1 grade flame retardant materials: Ceiling materials gypsum board, gypsum fiber boards, cement particle board, mineral wool acoustic panels, glass wool decorative acoustic board, perlite decorative acoustic board, flame retardant plywood, medium density fiberboard flame, rock wool decorative panels, retardant wood, aluminum composites, flame retardant phenolic plywood, aluminum foil, glass fiber reinforced plastic composite materials; wall materials gypsum board, gypsum fiber boards, cement particle board, mineral wool board, glass wool board, perlite board, flame retardant plywood, retardant MDF, fireproof plastic decorative plates, flame-sided particleboard, colorful paint, flame retardant wallpaper, wall covering flame retardant, flame imitation granite decorative plates, magnesium oxychloride cement prefabricated wall panels, flame retardant glass fiber reinforced plastic plate, PVC plastic sheeting, high-strength lightweight composite panels, fire-retardant molded wood composite board, color retardant plywood, fiberglass and other flame retardant.
Q:How to divide the fire resistant level of construction thermal insulation materials?
1, Combustion performance of the national standard building materials are divided into the following levels: Class A: incombustible building material: Material that almost never burn. Class B1: nonflammable building material: Nonflammable materials have good effect of flame resistance. In case of fire it in the air or at high temperature it is difficult to catch fire and spread, and when the fire source is removed, the combustion can stop immediately. Class B2: combustible building material: Combustible materials have good effect of flame resistance. In case of open fire in the air or at high temperature, it will immediately burst into flames and spread the fire quickly, such as wooden column, timber roof truss, wooden stairs, etc. Class B3: flammable building material: No flame-retardant effect, highly flammable, high risk of fire. 2, According to fire rating, external wall thermal insulation materials can be divided into 1) thermal insulation material with class A combustion performance. Rock wool, glass wool, foam glass, foamed ceramics, foam cement, hole-closed perlite,etc. 2) thermal insulation material with class B1 combustion performance: Extruded polystyrene board (XPS) after special treatment /polyurethane (PU) after special treatment , phenolic aldehyde, gelatine powder polyphenyl granule, etc. 3) thermal insulation material with class B2 combustion performance: Molding polystyrene board (EPS), extruded polystyrene board (XPS), polyurethane (PU), polyethylene (PE), etc.
Q:How to distinguish the fire rating of rubber and plastic thermal insulation material?
It is divided into level A, B1, B2 and B3. According to the current "burning behavior of building materials classification method", Level A insulation material is a non-combustible material, which belongs to YT. However, from the point of view of the current market , level A insulation material are very few, only glass wool, rock wool board, foam glass and vitrified micro bead. However, compared with level A insulation material, the more welcomed by the market is the organic insulation material. This is characterized as thermal insulation material, which is divided into three levels: level B1 is flame retardant, level B2 is flammable and level B3 is flammable. The level B1 nonflammable thermal insulation material is determined according to the fire endurance of the material. And different parts of the material are divided differently! Such as the common EPS / XPS insulation boards through special treatment of adding flame retardant. . Level B2 combustible insulation material is commonly the EPS expanded polystyrene foam insulation board and XPS board, that is, the ordinary plate. This material has low ignition point, and releases large amounts of harmful gases in the combustion process . Level B3 flammable insulation material is commonly the thermal insulation material taking polystyrene foam as the main material. Since this material is highly flammable, it has been out of the external wall thermal insulation materials. As for the civil construction insulation materials, China's current popular building insulation materials in the market are mainly made of three organic foams: EPS (molded polystyrene board), XPS (extruded polystyrene board) and PU (polyurethane).
Q:What are the new refractories?
Most are ordinary refractories.
Q:whether the aluminum silicate thermal insulation material is fireproof or not?
aluminum silicate is fireproof, and the melting point is between -40 ~ 800 ℃. Aluminum: it takes the flint clay clinker as raw material, produced by resistance or electric arc furnace fusion and injection fiber-forming process. its characteristics: Low thermal conductivity, excellent thermal and chemical stability, without binder and corrosive material.
Q:Why does refractory need to add coarse firstly and then add fine aggregate?
Binding agent can wrap particles and improve binding effect.
Q:Does refractory belong to metallurgical auxiliary materials?
Refractory includes metallurgical auxiliary materials.

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