refractory aluminum mortar cement with high refractoriness for metellurgy steel casting

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Loading Port:
Tianjin
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TT OR LC
Min Order Qty:
20 m.t.
Supply Capability:
1000 m.t./month

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Product Description:

Product Description

High aluminum cement can be used in the manufacture of prepared monolithic refractories, preparation of plaster alumina cement, self-stressing cement, cement with other special purposes, and maintenance, resistance to sulfate erosion and winter construction of engineering with other special needs.1. Cement CA-50 with Excellent high temperature.

 

 Technical index

Item

CA-50

CA-70

CA-90

Al2O3

%

≥50,

≥70

≥90

SiO2

≤8.0

≤8.0

≤8.0

Fe2O3

≤2.5

≤2.5

≤2.5

S

≤0.1+

-

-

CaO

30

25

9

Refractoriness

1550

1650

1750

Size

Mu

180

180

180

 

 

 

 Physical and Chemical Properties

Product Name

Low cement and high alumina   castable

Product Code

LH-16B

Density (kg/m3)

≥2.5

Chemical Component (%)

AL2O3

≥65

SiO2

20

Cold Crushing Strength(MPa)

110°C*24h

≥80

1100°C*3h

≥80

Modulus of Rupture(MPa)

110°C*24h

≥8

1400°C*3h

≥10

Linear Change Rate(%)

1100°C*3h

-0.1—--0.3

Water Consumption of Construction   (%)

6~7

Maximum Service Temperature(°C)

1400

Application Part

The front end of cooler,   precalciner, heat-resisting parts and lining of other industrial kiln.

 

 

 

refractory aluminum mortar cement with high refractoriness for metellurgy steel casting

refractory aluminum mortar cement with high refractoriness for metellurgy steel casting

refractory aluminum mortar cement with high refractoriness for metellurgy steel casting




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Q:How to measure the influence of high-temperature performance of the products refractory in the formation of the liquid phase.
Generally how can do high-temperature performance to measure how much liquid may affect hot bending strength rul refractoriness levels of high temperature creep?
Q:What's the definition of fire endurance of the fire-resistant coating for steel structure?
Fire endurance (h): Under the condition of standard fire resistance test, the time when the building components, accessories, or structure is subjected to fire to the time when they loose stability, integrality or thermal insulation is called fire endurance which is showed in time. Steel is the kind of building material that is nonflammable with many properties of seismic resistance and bending resistance. In practical applications, steel can improve the load capacity of buildings in a relative way, meet the needs of buildings design, beauty and mould, and it can also avoid the defects of poor flexibility and tensile strength of buliding materials like concrete. Therefore, steel is quite popular in the construction industry, and it is widely used in single-story or multi-storey skyscrapers, plants, warehouses, waiting rooms and airport terminals, etc. However, as a kind of building material, it has some unavoidable defects in fire prevention. That is its mechanical properties like yield point, tensil strength and elasticity modulus will decrease dramatically with the rise of the temperature.
Q:How to distinguish the construction fire-proof material rating?
According to national standard GB8624-97,combustion performance of 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. According to national standard, the fire rating of PVC floor must be class B1.
Q:What are included in fireproofing materials?
There are many types of fireproof materials, and the following listed below is the main species: All kinds of fire retardant coating such as finishing fire retardant paint, fire retardant coating components, fire-resistant coating for steel structure; all kinds of fire-proof materials such as fire retardant material and its products, textile, fire retardant fabric, building materials and products, flooring material and external wall thermal insulation system; all kinds of fireproofing components such as fireproof panel, fire door, fire resistant window frame, fire resisting shutter, fireproofing glass, elevator landing door,ventilating duct, fire-proof sealing material and fire protection smoke exhaust fan. The main indicators to judge fire resistance are: Flame retardency, ignition,production of toxic gases, smoke density,heat release and exhaust gas; fire resistance, combustion performance, heat of combustion, fire-resistant performance, high temperature resistance, fire rating, etc. There are some specific parameters which need to be judged by a professional testing equipment. You can go to the inorganic laboratory to check. The test results of fire rating are accurate.
Q:What refractory materials are used in power plant
And then I will introduce some application of thermal material in power plant (below) I hope I can help you. Energy saving is the trend of future industrial development efforts, grinding machine, conveyor belt, so the production of light thermal insulation materials will gain state support, drying kiln. Our factory mainly produce light thermal insulation brick. The refractory material we use most is light insulation brick, and the equipment used is sand mixer (Luohe, Henan)
Q:Is the linear change on reheating the same as heating permanent linear change of refractory material?
“+”represents expansion. the afterexpansion and aftercontraction after cooled to be at room temperature. The change may significantly damage the masonry of thermal kiln. There are regulations on the linear change on reheating of common refractory material in the national standard. Some physical chemical changes may continue. It is defined as the change from being heated to the specified temperature of refractory material sample. Heat preserving for a while till afte cooling to be at room temperature, then the residual will expand or contract in its length, heat preservation for a while, organization vitrification, the irreversible changes of its length refers to heating the firing refractory to be at high temperature, so as to make the volume of refractory materials expand or contract, due to the influence of uneven temperature or lack of time, otherwise it will cause the deformation of the refractory ball and make this indicator within standard even reach smaller value, so firing control must be strengthened in product production. But it is should not be too high. For refractory materials with same chemical composition, the linear change on reheating is produced in the heating process. Properly increasing sintering temperature and prolonging the holding time is an effective process measures, make its firing inadequate. When subjected to high temperature, it can reduce the thermal shock resistance. Minus sign "-" represents contraction. The permanent line rate refers to heating the fire refractory ball to the specified temperature. Linear change on reheating, also known as residual linear change, is an important indicator to assess the quality of refractory in the long time use. To control the permanent line rate within the standard or reach the minimum value.
Q:How to choose the material of refractory?
Long using temperature of aluminum oxide fiber is 1400 ℃, containing chromium aluminum silicate fiber, quartz, high purity aluminum silicate fiber, long-term use of temperature is 1000-1200 ℃ has aluminum silicate refractory fiber according to different raw materials, advanced refractory fiber (such as alumina. Commonly used vitreous aluminum silicate refractory fibre is amorphous, zirconium oxide refractory fibre) using temperature is 1700 ℃ view as >and the best temperature is 1300 ℃. Crystalline refractory fiber are polycrystalline mullite fiber, including ordinary aluminum silicate fiber, alumina and graphite refractory fiber, etc. The use of common refractory fiber temperature is 1150 ℃;>
Q:What is special refractories?
Long nozzle, slidding plate, tapping hole, stopper rods, and products that steel mills use
Q:How many kinds of A-level fireproof and thermal insulation materials are there?
Shenyang polystyrene board, extruded sheet, polystyrene particles, and polystyrene plastic plates...
Q:Fire rating of decoration materials
You can refer to (code for fire protection design of buildings)

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