Wholesalers Refractory Magnesia Calcium Brick Magnesite Dolomite Brick for Steel Refiningfurnace

• Customization: Available
• Feature: Good Mechanical Strength, Good Thermal Insulation Performance, High-Temperature Resistant, Low Thermal Conductivity
• Production Process: Extrusion Method
• Model NO.: Magnesia Dolomite Brick
• Refractoriness (℃): 1770< Refractoriness< 2000
• Shape: Brick
• MGO Content (%: 80.3
• Application Limit Temp: 1700c
• Apparent Porosity: 16%~18%
• Cold Crushing Strength: 55~80MPa
• Sio2 Content %): 1%~3.5%
• Application: Furnace Lining
• Ingle Package Size: 100X100X100cm
• Transport Package: Wooden Box
• Trademark: Thermaxcel
• Origin: Shandong, China
• HS Code: 6902100000
• Production Capacity: 20000t/Year

Product Description

 

Product Description

Magnesia dolomite brick is also called high calcium magnesium brick. Magnesia refractories with cristobalite as the main crystalline phase and tricalcium silicate as the secondary crystalline phase.It is used in the air eye of the steel-making side-blown converter, open hearth furnace top, oxygen-blown converter upper and other places.
Magnesia dolomite brick is a magnesia compound refractory material with MgO and CaO as the main chemical components. Its main mineral composition is cristobalite and cristobalite, both of which are high-melting minerals, which do not react at high temperature to generate new The compound minerals exist in an independent form and maintain their own inherent characteristics.
Cristobalite has good high temperature plasticity, which can buffer the thermal stress generated inside the brick due to temperature changes; cristobalite reacts with SiO2 in the slag to generate high melting point minerals C2S and C3S, which improves the viscosity of the slag and reduces it. The penetration of the slag into the brick improves the anti-stripping performance of the brick; calcite can absorb non-metallic inclusions such as S, P and AI2O3 in molten steel.Therefore, the magnesia dolomite brick has good thermal shock stability, good structural spalling resistance and slag penetration resistance, and also has the unique performance of purifying molten steel.

 

Brand Properties		MD15	MD20	MD25	MD30	MD40
Bulk Density (g/cm3)		3.03	3.03	3.03	3.03	3
Apparent Porosity (%)		13	12	12	13	13
Cold Crushing Strength (MPa)		80	90	80	80	80
Permanent Linear Change (%)@ 1,500ºC x 2hrs		--	-0.35	--	-0.61	--
Refractoriness Under Load (ºC) @0.2MPa		1700	1700	1700	1700	1700
Chemical Composition (%)	MgO	80.3	76.3	70.3	66.3	56.3
	CaO	17	21	27	31	41
	Al2O3	0.5	0.5	0.5	0.5	0.5
	Fe2O3	0.7	0.7	0.7	0.7	0.7
	SiO2	1.3	1.3	1.3	1.3	1.2

 

 

Q1 : How can you control your quality?

A1 : For each production processing, we have complete QC system for the chemical composition and Physical properties. After production, all the goods will be tested, and the quality certificate will be shipped along with goods. 

Q2 : What is your lead time? 

A2 : It usually needs about 15- 20 days after receiving the PO. 

Q3 : Do you provide free samples?

A3 : Yes, free samples are available, generlly speaking, the buyer shall bear all the delivery cost. 

Q4 : What is your payments terms?

A4 : We can accept 30% deposit, 70% balance to be against the BL copy or by LC, or other payment terms. 

Q5 : Can we visit your company?

A5 : Yes, for sure, you are welcome to visit JUCOS company. 

Q6 : What standards do you have?

A6 : Our products meet the standards, such as ASTM, ASME, AMS, DIN, JIS etc. 

      The third party testing is all available for us.