Steelmaking eaf partly high alumina brick

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       炼钢电炉顶用高铝砖

项目
item

DL—80

DL—75

BDL—80

BDL—75

Al2O3 %

80

75

80

75

显气孔率,%
A.P.

19(21)

19(21)

18(20)

18(20)

常温耐压强度,MPa
CCS

75

65

60

55

重烧线变化,%(1500℃x2h)
P.L.C

0—-0.3

0—-0.3

±0.2

±0.2

荷重软化开始温度,℃
Refractoriness

1530

1520

1530

1520

热震稳定性(1100℃,水冷)
Thermal shock (1100℃water)

提供数据
Issue actual value

8

8


Specifications:


Product features: high alumina brick to select of steelmaking furnace be yangquan super bauxite clinker asthe main raw material, after high pressure forming, high temperature sintering. The main mineral composition as corundum and mullite phase, has excellent high temperature mechanical properties and resistance to chemical attack. Especially not burning products, appearance is more accurate size, good thermal shock stability.


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Q:How are qualitative and qualitative refractories understood?
Unshaped refractory products, referred to as bulk loading, are made at the place of use for the required shapes and for heat treatment, such as castable, ramming, projection, spray, refractory clay, etc..
Q:Whether yellow dextrin is used in refractory bricks?
The production of refractory bricks needs yellow dextrin as bonded materials.
Q:What materials are used for roof insulation?
The other one is inorganic insulation materials, such as Portland, rare earth insulation, the thickness should be 5 cm or more, up to the high cost of auxiliary materials of construction, to reinforce, new inorganic insulation material, the material thickness, on the line of 2-3 cm, direct smear on the top of the house, without auxiliary material, than the price of wool, high aluminum silicate cotton.
Q:What are kiln bricks?
Kiln brick masonry brick kiln used brick, brick is a brick kiln.
Q:What are the main raw materials of magnesia chrome bricks?
Magnesium alloys are alloys based on magnesium and other elements. Its characteristics are: small density (1.8g/cm3 magnesium alloy or so), high specific strength, high modulus of elasticity, good heat dissipation, good shock resistance, greater impact load capacity than aluminum alloy, good resistance to organic and alkaline corrosion. The main alloying elements are aluminum, zinc, manganese, cerium, thorium, and a small amount of zirconium or cadmium.
Q:What are the specific raw materials for plastic pallets?
With excellent mechanical properties, its strength and elasticity are higher than HDPE, and it has good flexural fatigue resistance. It has good heat resistance and good chemical stability. Besides being concentrated by concentrated sulfuric acid and concentrated nitric acid, it is relatively stable to other chemical reagents. The high frequency insulation performance of polypropylene is excellent because of its almost no water absorption, so the insulation performance is not affected by temperature.
Q:How are shale porous bricks and clay porous bricks distinguished?
Weathering resistance is better than clay brickDue to differences in clay shale and its performance, the national standard requires shale weathering properties than clay bricks.
Q:Difference between inorganic insulation material and organic thermal insulation material
Manufacturing distinction:1, organic insulation materials mainly from petroleum products, including foam polystyrene board (EPS), extruded polystyrene board (XPS), spray polyurethane (SPU) and polystyrene particles. From a nationwide perspective, the organic exterior wall insulation system occupies more than 75% of the current external thermal insulation Market in our country.2, inorganic heat preservation material including expanded perlite, hollow glass beads, rock wool, mineral wool, perlite, glass wool and lightweight block self insulation system, mainly based on inorganic materials such as stone, glass, industrial waste and so on. As the state attaches importance to and requirements of the fire protection safety standards for wall materials, the market share of inorganic thermal insulation materials will be greatly improved.
Q:What is the problem about splintering when the refractory brick is fired?
There are many bubbles inside the refractory brick, it is also possible that the brick itself is not up to the standard about volume density, then refractory brick fragmentates. There are many reasons, may be in the process of repression
Q:What are the refractory materials?
Many kinds of refractory materials, usually by refractoriness level is divided into ordinary refractory materials (1580 to 1770 DEG C), advanced refractories (1770 to 2000 DEG C) and special refractories (more than 2000 DEG C); according to the chemical characteristics into acid refractory material, refractory materials and basic refractory materials. In addition, there are refractories for special occasions.

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