Name: High-purity custom fused magnesia FM-95 to FM-98 | High-temperature refractory materials | Zhengzhou Rongsheng Kiln Refractory Materials Co., Ltd.
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Product Introduction

Zhengzhou Rongsheng Kiln Refractory Materials Co., Ltd. specializes in producing high-purity, custom-composition fused magnesia (FM-95-FM-98), manufactured using an electric arc melting process (temperatures exceeding 2750°C). The MgO content is as high as 95%-98%, with impurities such as SiO₂, Fe₂O₃, and Al₂O₃ controlled to extremely low levels. The products possess excellent thermal shock resistance, corrosion resistance, and high-temperature strength, and are widely used in harsh environments such as steel smelting, cement rotary kilns, and glass melting pools. Supporting ISO9001 quality system certification and CE/SGS international export standards, the company can flexibly adjust the chemical ratio according to customer needs to ensure performance matches different application scenarios, helping customers extend the service life of refractory materials and reduce kiln shutdown maintenance costs. It is a reliable partner for high-temperature industrial customers worldwide.

Advantages and features

1. The MgO purity reaches 95%-98%, and the impurity content is lower than the industry standard, which improves high-temperature stability.
2. The electric arc melting process ensures dense and uniform grains, and its thermal shock resistance is superior to that of ordinary sintered magnesia.
3. Supports customized chemical ratios to meet the special needs of different customers for elements such as Al₂O₃ and SiO₂.
4. Possesses complete global export certifications (ISO9001/CE/SGS), meeting market access requirements in Europe, America, and Southeast Asia.
5. High cost-effectiveness, reduces replacement frequency, and significantly reduces overall operation and maintenance expenses.

Application Scenario

It is suitable for applications such as continuous casting protective slag in steel plants, electric furnace linings, cement rotary kiln linings, glass furnace regenerators and heating elements; it is mainly targeted at manufacturers and engineering contractors in the global metallurgy, building materials, and ceramics industries, and is especially suitable for export order customers with strict requirements for the quality of refractory materials.

Product Parameters

Chemical composition parameters

MgO content:	95.0% - 98.0%
SiO2 content:	< 1.0%
Fe2O3 content:	< 0.3%
Al2O3 content:	< 0.3%
CaO content:	< 0.5%
Moisture content:	< 0.1%

Physical performance parameters

Melting point:	≥ 2800 ℃
Bulk density:	≥ 3.40 g/cm³
Compressive strength:	≥ 60 MPa
Porosity:	< 5%
Thermal conductivity (measured by thermocouples):	≥ 20 W/(m·K) (800 ℃)
Thermal expansion coefficient:
Thermal shock resistance:	6.5 - 8.0 × 10^-6 /K (25-1000 ℃)

Process parameters

Production Process:	Arc melting method
Sintering temperature:	≥ 1800 ℃
particle size range:	Applicable to fine powders to bulk materials
Machinability:	FM-95，FM-96，FM-97，FM-98

Application Performance

Chemical resistance:	Excellent resistance to corrosion from steel slag, molten slag, and glass products.
High temperature resistance:	The structure is stable at high temperatures and does not decompose even after long-term use.
Thermal stability:	Good, suitable for repeated high-temperature cycles
Mechanical strength:	High efficiency, suitable for preparing high-performance MgO-C refractory bricks and kiln linings.

Packaging and storage

Packing:	Plastic woven bags lined with moisture-proof bags, standard bulk or customized packaging.
Storage conditions:	Keep in a cool, dry place, avoiding moisture and contamination.
Shelf life:	The quality remains stable for 12 months under proper sealing conditions.

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