Refractory Raw Materials-Silicon Fume Product

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Tianjin
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TT OR LC
Min Order Qty:
20 m.t.
Supply Capability:
5000 m.t./month

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Product Description:

CMAX Brand Silica fume is a byproduct of producing silicon metal or ferrosilicon alloys.It consists primarily of amorphous silicon dioxide (SiO2),its average granule diameter is 0.15~0.20 µm,specific surface area is 15000~20000 m2/kg.

1.      Very low permeability to chloride and water intrusion.

2.      Extremely high electrical resistivity.

3.      Increased abrasion resistance on floors,highways,marin structures.

4.      Superior resistance to chemical attack from chlorides,acids,sulfates.

 

Grey Densified and undensified Silica fume for cement

Analysis

Result

SF85

SF88

SF90

SF92

SF94

SF96

SF97

SF98

SiO2(%)(min.)

85.05

88.05

99.05

92.05

94.05

96.05

97.5

98.5

Fe2O3 (%)

0.78

0.44

0.21

0.25

0.20

0.20

0.10

0.20

Al2O3 (%)

0.29

0.20

0.21

0.25

0.20

0.20

0.20

0.20

CaO (%)

0.39

0.30

0.36

0.30

0.30

0.30

0.30

0.30

K2O+ Na2O (%)

0.29

0.24

0.22

0.20

0.20

0.20

0.20

0.20

Moisture (%)

3.05

2.55

2.05

2.05

1.85

1.25

1.00

1.00

Loss on Ignition (L.O.I) @975OC (%)

 

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Q:The effect of a high content of water in liquid resin exerted on refractory material?
For one thing, Substandard whiteness, transportation, low quality and the storage of refractory material may account for this. For another, a high content of moisture reduced the performance of refractory material. A high content of moisture is equal to buy water with same money in terms of trade settlement. Based on this, we can’t consider the super-standard water content from a single aspect, because the water content in refractory material is definitely super-standard, and another problem is particle size. Many people hold the idea that excessive amount of water content may revive its original performance, but it tends to have influenced the quality of refractory material.
Q:What's the definition of fire endurance of the fire-resistant coating for steel structure?
1. Fire endurance. Conduct fire resistance test of any building component according to the standard time-temperature curve, and the time when it is subjected to the fire to the time when it loses support capability or fire insulation function or its integrality is destroyed is referred to fire endurance. 2. Steel has relatively low fire endurance which is usually 0.25h only, namely 15 minutes; 3. Of steel structure buildings, steel can be used as beams, pillars, etc. but its fire endurance is not enough (usually these components have higher requirement on fire endurance, and take pillar as an example, it is usually demanded that the fire endurance should be 2-3h), and under this condition, it needs to brush fire retardant coating so as to raise the fire endurance. As to the specific quantity or types of the fire retardant coating, it is decided upon the actual conditions. In short, the building material needs to meet the required fire endurance of the buildings.
Q:Can anyone tell me what is A-leve fireproof material?
Combustion performance of materials can be divided into: A-level, B1-level, B2-level and B3-level, which respectively refer to noncombustible, difficult-flammble, flammable and inflammable materials. Building materials can be divided into four grades based on combustion performance (noninflammability, flame retardancy, flammability and inflammability). According to the stipulation of "Specification of Fireproof Design for Buildings" (GBJ16-1987) (2001 revised edition), fire hazard of production or storage should be divided into A-level, B-level, C-level, D-level and E-level. In "Specifications on Fireproof Design for Petrochemical Enterprises" (GB50160--1992) (1999 Revision), it also stipulates that fire hazard should be classified on the same basis of subtsance danger in usage, production or storage. According to different fire hazard, requirements and measures of oreventing and restricting fire explosion can be put forward from the aspects of fire separation distance, fire resistant rating of buildings, allowed floors, safe evacuation, fire fighting facilities and other aspects.
Q:What's the maximum temperature that the high-temperature resistant refractory ceramic fiber cotton can endure?
Nichrome wire, stainless steel wire and glass fiber are reinforced. Ceramic fiber coating cloth and slag cloth, sintering ceramic fiber cloth and ceramic fiber fumigation cloth) Characteristics of the ceramic fiber cloth: high temperature resistance, low heat conductivity, thermal shock resistance, low thermal capacity; superior insulating property at high temperature, long service life; resistance to nonferrous metals like molten aluminum and zinc erosion; low and high temperature strength; innocuity with no adverse effect on the environment; Applications of ceramic fiber cloth: It can be applied to the thermal insulation of all kinds of furnaces, high-temperature pipelines and vessels; furnace doors, valves, flange seal, fire doors, fire resisting shutters and high-temperature furnace door curtains; engine and instrument insulation, clad material of fireproof cables, and high-temperature resistant and fire-proof materials; thermal insulation cloth for coverage, high-temperature expansion gap padding, and inner linings of the flue; high temperature resistant labor safety products, fireproof suits, high-temperature filtration and sound absorption, replacement of asbestos, etc.
Q:What is the main material of fireproof wooden door?
Fireproof door is an important part of fire-fighting apparatus and society fire prevention, so the quality and use of fireproof door is the key to the success of the fire prevention. Some customers don't know clearly that whether the fireproof door should install a door closer. Today I specially read the explanation of relevant state departments for fireproof door, in the explanation in 5.3.3, fireproof door should be installed fireproof door closer or set, so that normally open fireproof door can automatically close close-door device of the door leaf (except for the use of special parts, such as pipe shaft doors, etc.) in the event of a fire. In other words, except for some special parts which don't need to be installed door closer, such as pipe shaft doors, other parts are required to install fireproof door closer.
Q:what's the fire endurance of fireproof panel?
fire endurance of fireproof panel generally is 3 hours. For example, 12 mm non-asbestos fiber reinforced calcium silicate board, fireproof panel, two single 75 keel. through the monitoring of national fireproof construction materials quality supervision center, it's security and refractory time will reach over 3 hours. fireproof panel, also called fire resistance board, scientific name is thermosetting resin impregnated paper laminated wood,english abbreviation HPL(Decorative High - pressure Laminate) is fire resistant building material for surface decoration and has rich surface colors,lines and special logistics performance, it's widely used in interior decoration, furniture, cabinets, laboratory table, external wall, etc.
Q:What are the standards of refractory concrete ?
The special concrete compound by uitable binding materials, refractory aggregates, admixtures and water at a certain ratio. It can maintain the desired mechanical property at high temperature of above 900 ℃ for a long time. The property depends on the material and matching of all the aggregates, admixtures and binding materials. Its material, composition and ingredients are similar to these of refractory castable. Refractory aggregate can be dry slag, broken refractory bricks, basalt, bauxite, magnesite, etc. According to the binding material, it can be divided into Portland cement refractory concrete, aluminate cement refractory concrete, sodium silicate refractory concrete, phosphate refractory concrete, magnesia refractory concrete, etc. (8) The particle material and powder material in refractory concrete are called aggregate and admixture respectively. The mixture of concrete can be moulded by casting, vibrating or ramming. And proper measures to promote their hardening can be used in accordance with the hardening characteristics of the binding materials (such as air hardening, water hydraulicity, thermal hardness, etc.). It is mainly used to build the monolithic lining of industrial furnace and procast blocks. Of all the concrete, the ones used for under 900 ℃ is called heat-resistant concrete, and they are used for the foundation and chimneys, etc. of industrial furnaces and thermal equipment.
Q:How long is the duration of fire resistance that fireproof window of level B can endure?
Fire proof window of level B is the fire proof window whose duration of fire resistance is not less than 1 hour.  Technical requirements: One, Materials and fittings (1) the frame of windows draw on steel or wood frames which have certain intensity and are able to ensure the integrity and stability of components.  (2) Steel frame and layering can use galvanized steel or stainless steel plate. Its selection criteria shall be in line with provisions 5.1 of GB12955< steel fire door general technical conditions >. (4) The internal fillings of steel, wood frames should use non combustible materials. (5) Fire proof windows can opt for qualified products without affecting the performance of fire proof window. Light transmittance of glass shall not be less than 75% of the same layer of ordinary flat glass.  (6)The sealing material between the frame and the fireproof glass should adopt the nonflammable materials, functioning as the fire blocker. (7)Hardware fittings should be tested for qualified products.
Q:What is refractory aggregate?
Refractory aggregate is fire-resistant product improved with low temperature binder, chemical compound and normal temperature strength.
Q:How to use fireclay?
Actually, fire clay is not strong. Fireclay are all clinkers with no strength, also known as "blade mud". It is used as the filler with a thickness of not more than 3mm. Therefore, it can not be used for thermal insulation inside the furnace. Inner thermal insulation of the civil boiler can use "alumina cement", also known as refractory cement.

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