Dead Burnt Magnesite With Good Quality And Good Price DBM

Ref Price:
$250.00 - 450.00 / m.t
Loading Port:
Qingdao
Payment Terms:
TT or LC
Min Order Qty:
50 m.t
Supply Capability:
5000 m.t/month

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Product Description:

Dead Burnt Magnesite  DBM


Main products level

0-1mm

1-3mm

3-5mm

0-10mm

200mesh (90% through)

325mesh

Specification

Grade

MgO

(min.)

SiO2

(max.)

CaO

(max.)

Fe2O3

(max.)

Al2O3

(max.)

L.O.I.

(typical)

 

mesh

DBM90

90.00%

1.00%

1.50%

0.70%

0.10%

1.70%

 

 

 

0-400

DBM95

95.00%

1.00%

1.50%

0.80%

0.10%

2.60%

DBM96

96.00%

1.50%

2.50%

0.80%

0.30%

2.90%

DBM97

97.00%

3.00%

2.50%

0.80%

0.30%

3.40%


Usage

Mainly used in producing common magnesite brick, magnesite aluminum brick, magnesite chrome brick, gunning mix, hot patching mix for converter and EAF ect.

Features

Our factory produce the products of the Dead-burned magnesite are selected natural magnesite, it is produced by mine-selecting, purifying, calcimine in shaft kiln. It is an ideal material for unshaped refractory material, the final products are used in open hearth furnace, electric furnace bottom and furnace's lining tamping.






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Q:What is the biggest difference between refractory bricks and clay refractory bricks? Where can I find information on the refractory bricks?
You can look up knowledge manual of refractory material to find phosphatic material, etc. Xinjiang refractory bricks, castable refractory, refractory material, silicious, corundum and alumina-magnesia: High alumina and clay refractory bricks can be divided into
Q:Why should graphitic refractory materials be used now that graphite can burn?
In theory, any substance can burn as long as certain temperature is reached. Graphite is turned from diamond under anaerobic condition and at high temperature of 2 000 ~ 3 000 ℃. that is to say, ignition point of graphite (lamellar graphite ) under anaerobic condition will be at least above 3 000 ℃. There are many types of graphite, and their ignition points are also different. Ignition point of pyrolytic graphite is much low. Except for a few cutting-edge areas, fire endurance demand for most areas in daily life (eg. brake pad will add a certain amount of graphite) is under 1000 ℃. Therefore, graphite can be used as refractory material. That is, graphite can both burn and can be used as refractory material, which are not contradictory.
Q:What is the role of the vermiculite fireproof material?
Apart from inflaming retarding, the materials covered with vermiculite has a lot of advantages including anti rust, waterproof, anticorrosive, wear-resisting, heat-resisting and the coating is armed with toughness, colorability, adhesiveness, fast-drying and luster.
Q:What are the fire protection standards of insulation materials?
The combustion performance of thermal insulation materials for exterior walls of all civil buildings, within the scope of fire design auditing and fire control acceptance, should be brought into the auditing and acceptance. As for the "Management Regulations on Supervisions of Fire Prevention and Control for Building Projects" (Ministry of Public Order No. 106) , all civil buildings which are out of the scope of Article 13 and 14 are included in the random check. Before the release of new standard, it must be strictly implemented the Article II of the "Fire prevention Interim Provisions on civil external wall insulation system and external wall decorative" ([2009] No. 46), namely, the insulation materials of civil buildings must use materials with A-level combustion performance.
Q:What is the most reasonable drying heating curve of magnesia refractories? Products of less than 0.5T
You'd better oxidize magnesia preformed unit at room temperature for a longer period of time, then bake it, during which, it's enough to control the maximum temperature within 300 degrees. During the middle process, usually heating up for 4 hours and keep warm for 3 hours. The entire heating up process takes about 20 hours. If it is the site operation magnesia-based castable, it should be heated slowly in the early stage, and pay attention to keeping warm at 80 degrees Celsius. Every manufacturers has their own heating curves, so do not blindly adopt existing curves, try to make your own heating curve.
Q:What refractories can withstand high temperature above 2100 degrees?
Well, what can you heat to 2100 degrees? ? The dryer? What you used are all substance of low-melting point, which cannot withstand even 1000 degrees. "Is the maximum temperature of refractory bricks 1500 degrees?" Do you mean refractoriness or operating temperature? Firstly, a dryer is impossible to reach 2100 degree. If it does, you might as well use high chrome brick for oxidizing atmosphere. You can use silicon nitride brick for non-oxidizing atmosphere. But I guess it is enough for you to use clay brick, but the price differs a lot! ! !
Q:what is best for making refractory insulation for Blast furnace, hot stove.
High dimensional insulating blanket.
Q:What is the the best matching ratio of refractory cement?
The ratio of cement and sand is about 30 per cent. Properties and Applications of refractory mortar: 1, Good plasticity and easy construction; 2, High bonding strength and strong corrosion resistance; 3, Relatively high refractoriness up to 1650 ℃ ± 50 ℃; 4, Good slag corrosion resistance; 5, Good thermal peeling. Refractory mortar is mainly used in coke ovens, glass furnaces, hot blast furnace and other industrial furnaces. Applied industry: Metallurgy, building materials, machinery, petrochemicals, glass, boiler, electric power, steel, cement, etc. And refractory cement is also known as aluminate cement. Aluminate cement takes bauxite and limestone as raw materials, alumina content of about 50% as the clinker. And it is a hydraulic cementing material made by grinding. Refractory cement is also known as aluminate cement. Aluminate cement is often yellow or brown or gray. The main mineral of aluminate cement is mono calcium aluminate (CaO · Al2O3, abbreviated CA) and other aluminates, and a small amount of dicalcium silicate (2CaO · SiO2), etc. It is a special cement.
Q:what's the classification of fireproof and thermal inuslation matertial?
1. thermal insulation material with A class combustion performance. Rock wool, glass wool, foam glass, foamed ceramics, foam cement, hole-closed perlite (2) thermal insulation material with B class combustion performance: extruded polystyrene board after special processing (XPS)/ polyurethane after special processing (PU) , phenolic aldehyde, gelatine powder polyphenyl granule. 3,thermal insulation material with B2 class combustion performance: molding polystyrene board(EPS), extruded polystyrene board(XPS), polyurethane (PU), polyethylene (PE),etc. sea capacity module and vitrified micro bead(cooperate with the innovator of vitrified micro bead, Liu Weihua) fireproofing issues have been completely solved.
Q:The performance of refractory material
As for easticity modulus, you can serach for information on the Internet or specialized books.

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