• Cement Refractory Cement/ High Alumina Cement System 1
  • Cement Refractory Cement/ High Alumina Cement System 2
  • Cement Refractory Cement/ High Alumina Cement System 3
Cement Refractory Cement/ High Alumina Cement

Cement Refractory Cement/ High Alumina Cement

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0 m.t.
Supply Capability:
50000 m.t./month

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Product Description

 

 

 

Corumdum mullite series castable refractory cement for Petrolchemical&Coal Chemical Industry

Corundum mullite series castables features:
1. high refractoriness
2. good chemical stability
3. high strength

 

1.   The corundum mullite series castables, prepared with tabular alumina, white fused alumina, fused mullite, etc. as starting materials, are characterized by high refractoriness, good chemical stability, high strength, etc.. The castables with Al2O3≥94% are corumdum castables.

2.   The castables are mainly used for on-site casting and off-site precasting for working linings of high temperature refining chemical equipment in chemical and metallurgical industry.

 

Technical Data

 Item    Corumdum mullite series castable refractory cement for Petrolchemical&Coal Chemical Industry
  Corundum mullite castables Corundum castables
 CastPA72   CastPA88   CastPA94
 Long term service temperature,℃ 1550 1600 1650
 Al2O3,% 72 88 94
 SiO2,% -- -- 0.5
 Fe2O3,% 0.5 0.5 0.3
Bulk density,g/cm3(110℃×24h)  2.5 2.7 2.9
 CCS,MPa (110℃×24h) 50 50 55
 Linear change rate after heating,%  ,(1300℃×3h) ±0.4  ±0.3  ±0.3

 

Cement Refractory Cement/ High Alumina Cement


Cement Refractory Cement/ High Alumina Cement


Cement Refractory Cement/ High Alumina Cement

Packaging & Shipping

 

 

Packaging Details:25kg or 50kg per small bag or as customer's demand
Delivery Detail:After 7 days with stock, 30 days production and inspection

 

 

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Cement Refractory Cement/ High Alumina Cement

 

Our Services

 

 

♥  Research of application basis, new technical process and new technology, development of new product, and technical consultation.

♥  Optimum solution and product supply of refractories for high temperature industries, such as iron&steel, non-ferrous, petrochemical and building materials.

♥  Engineering design, contract and consult for refractories, and civil architecture design.

♥ Research,development, manufacture and sale of superhard materials.

♥ R&D, manufacture and sale of special packing materials for export.

♥ Inspection,supervision and arbitration of refractories.

♥ Consultation and services in refractories information.

♥ Training and cultivation of high-level talents in refractories profession.

 


 

Q:What are the main materials in concrete fireproofing material?
fireproofing materials mainly consist of class A incombustible?material and class B1 nonflammable material. Class A incombustible?material: Granite, marble, terrazzo, cement products, concrete products, gypsum board, lime products, clay products, glass, tiles, mosaics, steel, aluminum, copper alloy; class B1 nonflammable material: Ceiling materials, dry wall, fibrous plaster.
Q:What is the limit of fireproof rolling shutter?
Fireproof rolling shutter door is a kind of fire protection and heat insulation facility which is suitable for the large openings of buildings, having a certain effect on the design and installation. Fire shutter doors are widely used in fire partition of industrial and civil building. It can effectively prevent the spread of fire, to protect the safety of life and property. It is an indispensable modern building fire facilities. According to the national standard 14102-2005 GB standard, the provisions of 14102-2005 GB specify that: If fire resistance limit of fire resisting shutter is no less than 3 hours, it is AAA fireproof rolling shutter. Therefore, the fire resistance limit of AAA grade fireproof rolling shutter should be 3 hours.
Q:What kind of refractory bricks material is best?
1, high alumina brick: The content of Al2O3 is more than 75. The refractoriness is higher than the clay brick. It has good resistance to acid, alkali and erosion and is suitable for cement kiln calcining zone and other places. It has long operation life, but the price is high. 2. dolomite?brick: Formation of coating has good performance, good corrosion resistance, but f-CaO is contained in bricks. It is hydratable and difficult to transport and keep, so it is less used in the production. 3. magnesia-chrome bricks: It has good formation of coating and is used for burning zone. The disadvantage is poor thermal shock resistant performance. Besides, positive Hexavalent Cr is highly toxic. Countries that produce and use magnesia-chrome bricks gradually decrease on the international. Now production units using this brick should find alternatives as soon as possible. 4. spinel brick: It is often used in transitional zone and has good seismic performance, good reduction resistance, but refractoriness is a little bit poor. 5. anti-stripping brick: This brick contains a small amount of ZrO. Martensite phase transformation happens to form thin crack during temperature-rise period. It has strong alkali?resistance, anti-stripping performance and good slag resistance. 6. phosphate brick: It has low refractoriness, but it has strong strength and good shock resistance. It is often used in grate?cooler, hot kiln hood, etc. 7. carborundum brick: It has high temperature resistance(1800 degree, softening temperature under a fixed load is 1620-1640), small coefficient of thermal expansion, high cold-resistance heat-resistance, abrasion resistance. It is suitable for cooling zone and kilneye. 8. silmo brick: It has good thermal shock resistance, high strength, good abrasion resistance, and is suitable for transitional belt.
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:What is the best refractory company?
Recently, many of the activities of palladium ah, find a few big beauty shoot videos, but also to send jewelry, and draw, seems to be the need to vigorously develop the market China.
Q:Who can tell somthing about how to choose fire resistant rating of fire resistance rolling shutter doors?
There is no necessary connection between them. Different fire resistant ratings of bulidings require different fire endurance of different elemements of buildings. According to the fire endurance, fireproof doors can be divided into A-grade, B-grade and C-grade, whose fire endurance should not be less 1.2h, 0.9h and 0.6h respectively. A-grade fireproof doors can be even applied to the material whose fire resistant rating is at secondary level. "Building Regulations" mention that fire resisting shutter can be used as partition of fire?compartment in those places where setting firewalls is not so easy. When using fire resisting shutter whose fire endurance doesn't include unexposed surface temperature rise, it should install closed independent automatic sprinkler system for protection on both sides, and the sprinkler sholud last at least 3 hours.
Q:What substitutes are available for high-end refractories in addition to zircon sand?
The composite sand powder can effectively replace zircon sand, with the same operation process, less operation time and environmental protection
Q:Who knows what kind of material the fire-proof plate use, and is it good?
It is the decorative board made by adopting silicious material or calcareous material as the main raw material, and blending them with certain proportion of fibrous material, lightweight?aggregate, adhesive and chemical?additive before steam pressing. It is a kind of new material and more and more frequently used currently not only for it is fireproof. Construction of the fire-proof plate has higher requirements on the adhesive, and the price of the fire-proof plate with better quality is more expensive than that of the decoration panel. The thickness of the fire-proof plate is generally 0.8mm, 1mm, and 1.2mm. So it is the best material for making cupboards.
Q:What are the disadvantages of the refractory industry?
The rapid development of continuous casting technology allows Hua Heng refractories to be improved in variety and quality. The development of refractory for continuous casting has a significant impact on the production of continuous casting and quality of continuous casting billet. Constructing and putting Baosteel into action has greatly pushed the improvement of the refractory technology. Continuous casting refractory is an important part of the continuous casting machine. In addition to the general characteristics of refractories, it is also required functions that can purify molten steel, improve the quality of steel, stabilize temperature and composition of the molten steel, control and regulate the molten steel flow. Therefore, it is known as functional refractories. Continuous casting Refractories include: (1) ladle refractory - ladle lining, permanent lining and ventilation components; (2) tundish refractories - permanent lining, coating, insulating plates, clad etc; (3 ) functional refractories - long nozzle for non-oxidizing casting, submerged nozzle, monolithic stopper, sliding gate; (4) ceramic purifier for purifying molten , slag dam, alkaline paint and horizontal separating ring and gate board for continuous casting.
Q:Can anyone say something about what A-level fire-proof decorative material is?
Now A-level market is very confusing. The major products are material monomer A-level and composite A-level, now a lot of B-level material is wrapped in calcium silicate board. The foam cement overall composite is level A, such as phenolic aldehyde composite, as well as some of the foam paddings, while monomer A-level includes rock wool, ultra-thin insulation panel and the like.. But there are few products with real sound A level qualification. Many manufacturers are playing the edge ball with A-level fire rating examining reports and B-level system detection reports and records, but this situation will not last long, which will soon be clear. I hope the information above can help you. Hope you adopt

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