Dead Burned Magnesite Ore

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Product feature:

high temperature performance and high-density, strong anti-permeability ability and easy to rapid sintering, very thin sintered layer,good thermal shock stability, strong slag-resistance, long service life and so on.

Product function:

Apply to the construction of bottom and wall of all kinds steel making electric arc furnace and ferroalloy smelting furnace for hot charging of hot metal and second hand steel

Product usage:

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

Product Advantage:

We can 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.

Classifi cation	Brand	Chemical composition（%）						Size mm	Application
Classifi cation	Brand	MgO （≥）	SiO₂ （≤）	Fe₂O₃（≤）	CaO （≤）	Al₂O₃（≤）	C/S （≥）	Size mm	Application
Magnesite	M47A	47	0.3	0.28	-	0.1	2	0-25； 25-350	Fused Magnesite；Caustic Calcined Magnesite
	M47B	47	0.4	0.30	0.6	-	-
	M47C	47	0.6	0.30	0.6	-	-
	M46A	46	0.8	0.30	1.2	-	-	0-25	Fused Magnesite； Dead Burned Magnesite；Caustic Calcined Magnesite；
	M46B	46	1.2	0.4	0.8	-	-	25-350
	M45	45	1.5	-	1.5	-	-	25-350
	M41	41	2.0	-	6.0	-	-	25-350	High Ferrum High Calcium Synthetic Magnesite
Magnesite Dolomite Ore	MCa-10	22	2	-	10	-	-	25-350	Calcium Magnesite
Magnesite Dolomite Ore	MCa-6	22	2	-	6	-	-	25-350	Calcium Magnesite
Dolomite	MCa-28	20	1.0	-	28	-	-	25-30	Dolomite Clinker
Dolomite	MCa-26	20	1.5	-	26	-	-	25-30	Dolomite Clinker

Q:what is best for making refractory insulation for Blast furnace, hot stove.: High dimensional insulating blanket.

Q:What are unshaped fire-resisitance materials?: Refractory castable, refractory plastic material, usually classified according to construction and manufacture method, unfired bricks precast block, refractory pressed into material, refractory cast material, refractory coating, refractory ramming material there are many classification methods

Q:Preparation of refractory clay: Is it to make refractories? Add some andalusite to the refractory mortar will improve the effect.

Q:What are the specifications of fireclay bricks?: Dimensions of refractory bricks : 230 * 115 * 65mm

Q:What kind of refractory materials can withstand 1500℃ when processing briquette stove core and meanwhile cost less?: Alkali resistant castables cost the least.

Q:How should refractory cement be used?: Refractory cement is very easy to use. Add some water and mix, and it will harden. Generally there is no need to add other binding agents, but you can add some refractory aggregate and powder. If you use only refractory cement, it will generate a lot of cracks after high temperature. Generally refractory cement can withstand temperature of about 1300 degrees.

Q:Refractory material, refractory brick: Refractory materials of various varieties, different uses, it is necessary to scientifically classify refractory materials, so as to facilitate scientific research, rational selection and management. There are many classification methods for refractory materials, among which chemical properties classification method, chemical mineral classification method, production technology classification method, material form classification method and so on are included.

Q:What's the feature of construction external wall fireproof and thermal inuslation matertial?: It has properties of low heat conductivity coefficient, low density, high flexibility, fireproof and waterproof. Its heat conductivity coefficient at normal temperature is 0.018W / (K · m) . The thermal insulation property is three to eight times that of the traditional materials. And it is completely waterproof. [2] Thermal insulation lining has properties of low heat conductivity coefficient, low density, high flexibility, fireproof and waterproof. Light, generally about10-96kg / m3, 20kg / m3 or less is felt, 24-48kg / m3 is middle-hard plate, 48-96kg / m3 is hard plate, wherein 48kg / m? can be used as ceiling, with softening point being 500 ° C , thermal insulation 300 ° C. It is widely used in the United States, k =0.9. Calcium silicate thermal insulation product is developed in 1970s in China. With high compressive?strength, low heat conductivity coefficient, recycle and easily construction, it is widely used in the power system. In China, small workshop?production were the most common, then four production lines were gradually introduced from America, including instant fiber forming, dry method punched felt, which are advanced and quality, temperature endurance up to 800-1250 ° C.

Q:How much is the content of boron carbide in refractory material?: Boron carbide is used in refractory material. For example, generally we could add 0.2% of boron carbide into magnesia carbon bricks. It is suggested that 0.5% is enough, because it has strong effect in boosting melt. It is said that 0.5% would be alright since boron oxide after oxidation belongs to material of low melting point, so the amount should be limited within 0.5%-1%,

Q:What types of steel are silicious quicksand and chromium quicksand used in respectively?: Chromium quicksand can be used in steel-making process that has longer refining time like LF, VD and RH, in stainless steel drainage and thin plate drainage agent. Silicious quicksand is used in short steel-making process, process that is less than 45 seconds or process without refining. You can consult Hua Heng for details or inspect it by yourself.

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