$Raw Materials for Refractory:Refractory Grade Calcium Aluminate High Alumina Cement Price System 1$
$Raw Materials for Refractory:Refractory Grade Calcium Aluminate High Alumina Cement Price System 2$

$Raw Materials for Refractory:Refractory Grade Calcium Aluminate High Alumina Cement Price$

$Raw Materials for Refractory:Refractory Grade Calcium Aluminate High Alumina Cement Price System 1$

$Raw Materials for Refractory:Refractory Grade Calcium Aluminate High Alumina Cement Price System 2$

Raw Materials for Refractory:Refractory Grade Calcium Aluminate High Alumina Cement Price

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 2000 m.t./month

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Specifications

high alumina cement
1.Bindering materials
2.Use to refractory
3.long setting time
4.resist high temprature

refractory grade calcium aluminate high alumina cement price

Features:

1. High refractoriness

2. Stable chemical properties, good chemical corrosion performance

3. Ideal plasticity

4. Low shrinking

5. High binding strength, good structural integrity

6. Long service life

Application:

1. Mainly used for the masonry of high-alumina refractory bricks and repairing kilns.

2. Steel, cement, and ceramic industry

3. Power and chemical Plants

4. Petrochemical industry and foundries.

Specification

Items		Unit	Index
Items		Unit	CA-70	CA-80
Chemical composition	Al2O3	%	68.50-72.00	78.50-81.00
	CaO	%	28.0-31.50	17.00-20.00
	SiO2	%	≤0.50	≤0.50
	Fe2O3	%	≤0.50	≤0.40
	K2O+Na2O	%	≤0.50
Specific Surface Area		cm2/g	≥5000	≥7000
Beginning Set		min	40-150	≥30
Bending Strength	24h	Mpa	≥7.0	≥5.50
Compressive Strength	24h	Mpa	≥45.0	≥40.00
Refractories			≥1560	≥1790

$refractory grade calcium aluminate high alumina cement price$

Q:Refractory net: I think China's refractory industry does exist high yield and quality is not high.The main reason, I think, is the immaturity of the Chinese government and individuals. First of all, the government does not encourage basic research, resulting in the lack of innovation in the refractory industry; moreover, the company and enterprise take immediate interests as the most important and do not value long-term development; individual enterprises are eager for quick success and instant benefit. Users of domestic refractories, refractory products only to the price for the bid by standard of foreign products; regardless of price, quite a bit of the meaning of things.

Q:What is the appropiate thickness if fire resistant time for ultra thin steel structure coating is 2.5 hours?: According to the "code for fire protection design of tall buildings", the fire resistance time of the component is at the first level: 3 hours, beam: 2 hours, floor: 1.5 hours;if fire resistance level is level the requirement for time of fire resistance component is the column: 2.5 hours, beam: 1.5 hours, floor: 1 hours. For fire resistant coating, fire resistance time for ultra-thin fire retardant coating is shorter than 1.5 hours. If the time exceeds 1.5 hours, thick fire resistive coating should be used. Steel structure can adopt surrounding concrete or brick, fireproof coating, fireproof board coating and composite structure for its fire resisitance. Fire resisitance board can be divided into thick fire protection plate and thin plate, the thickness of the plate thickness of the fire is between 20 ~ 50mm, mainly includes calcium silicate fireproof board and expansion boring stone fire board, the main varieties are KB board, CF; thin fireproof plate is between 6 ~ 15mm thick, the main varieties include enforced short fiber cement plate, ordinary enforced fiber silicate calcium board and glass cloth reinforced inorganic board. As is known to all, steel structure usually will lose bearing capacity usually in 450 to 650 degree, leading to deformation, steel column and beam bending, and be no longer usable at last. Generally fire resistant limit of unprotected steel stucture is about 15 minutes. 1.5 hours;if fire resistance level is level the requirement for time of fire resistance component is the column: 2.5 hours, beam: 1.5 hours, floor: 1 hours. Steel structure an use surrounding concrete (or masonry), fire retardant coating, fire retardant plate and compround structure to achieve the required refractory limit. Hope my answer will help you.

Q:What's the classification of refractory material?: Magnesium aluminum is complex and mainly seeing what classification standard is like according to the appearance shape can be divided into two categories, setting and not setting according to the acid alkali can be divided into acidic, magnesia, high aluminum, ramming expected, spinel, spray coating, plastic, just the quality of the jade, daub material according to the chemical composition is divided into, such as clay, neutral and alkaline according to the operation mode can be divided into different castable, magnesium, calcium, magnesium chrome

Q:how to divided the external wall thermal insulation materials fire rating: The external wall thermal insulation materials is divided by fire rating: 1. The thermal insulation material of level A combustion performance: inorganic fiber spray coating, glass wool, foam glass, foamed ceramics, rock wool, foam cement and hole-closed perlite, etc. 2. combustion performance is level B1 insulation materials: Extruded polystyrene board (XPS) after special treatment / Special treatment of polyurethane (PU), phenolic aldehyde and gelatine powder polyphenyl granule 3, combustion performance is level B2 insulation material: Molded polystyrene board (EPS), extruded polystyrene board (XPS), polyurethane (PU), polyethylene (PE), etc.

Q:What are the application of old refractory bricks?: It can still be used as refractory bricks or refractory. The quality of auxiliary material is not as good as bauxite.

Q:Fire resistance and evaluation of refractory for casting: The products to be tested are broken and ground, adding organic binders (usually dextrin) that do not affect the refractoriness. Water is used to make standard sized test cones, as shown in figure 1-2-1. Test cone is positive, three edge cone, the bottom side length of 8.5mm, the top side length is 2mm.Test, the equivalent of high standard cone refractoriness of the 2 products to be high, No. 1 and No. 1 high temperature low standard cone of each one, and the 2 to be tested in accordance with regulations frustum cone plug made of high aluminum material, a cone prism and vertical 8 degrees. 1 degrees tilt angle. Then, the cone is heated in a high temperature furnace. When the test cone with a high temperature and bending down to the standard cone top contact cone, the high standard cone refractoriness refractoriness is running.

Q:What kind of refractory materials should be used for the intermediate frequency furnace to smelt manganese?: I am not quite clear. But you should take two aspects into consideration, namely, no pollution and strong durability.

Q:What kind of materials can be tested their electrical resistivity in the current refractory industry?: fused cast bricks, fused zirconia corundum blocks, corundum, high zirconium

Q:Why does refractory need to add coarse firstly and then add fine aggregate?: Binding agent can wrap particles and improve binding effect.

Q:Can polystyrene foam color steel plate be used as decorative fireproofing material ?: Polystyrene foam plastic can not be used as fireproofing material; polystyrene foam plastic is made up of polystyrene resin as main component, foaming?agent and other additives. It is a buffer material which is most widely used[1]. It is closed hole structure, so it has low water-absorbing quality and excellent water resistance; low density, about 0.015 ~0.03; good mechanical strength, excellent buffer?performance; good machinability, easy to be moulded; good dyeing property, thermal adaptability and anti-radiation; high dimensional accuracy, uniform structure. Therefore, it has a large share in external wall thermal insulation. But it will emit polluted styrene gas when burning. It is a kind of class B material in construction.

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