Deepening China-Africa Cooperation To Help Green Metallurgy

Deepening China-Africa cooperation to help green metallurgy

--ZINFON FACTORY Direct bond magnesium-chromium bricks help upgrade copper smelting in Nigeria

 Against the background of global green energy transition and efficient utilization of mineral resources, ZINFON FACTORY, by virtue of its leading refractory technology, has successfully reached a strategic cooperation with a large copper smelting enterprise in Nigeria. The cooperation focuses on providing high-performance directly bonded magnesium-chromium bricks for the reflector furnace of a Nigerian copper mine, which helps the customer to improve smelting efficiency, reduce operating costs, and at the same time practice the concept of low carbon and environmental protection, marking a new level of in-depth synergy between China and Africa in the field of metallurgical technology.

Background of cooperation: Empowering Africa's mining development with technology

 As a major mineral resource country in Africa, Nigeria, copper smelting is an important pillar of its industrial economy. However, the traditional reflector furnace is prone to problems such as rapid refractory loss and low thermal efficiency under high temperature and strong corrosive environment, which directly affects the smelting efficiency and metal purity.

 In response to the customer's demand, ZINFON FACTORY's technical team conducted an in-depth study of the Nigerian copper mining environment, combined with the local ore characteristics and smelting process, and finally selected the direct bonded magnesium-chromium bricks as the core material of the reflector lining to provide customized refractory solutions for the customer.

Product Advantage: Why choose direct bond magnesium chrome bricks?

 Direct bonded magnesium-chromium brick is a kind of high-performance refractory material made of high-purity electrofused magnesia (MgO) and chromite (Cr₂O₃) as the main raw materials through high-temperature sintering process. Its core feature is the direct combination of magnesia and chromite, forming a solid MgO-Cr₂O₃ solid solution structure, avoiding the problem of strength degradation caused by low melting point impurities (such as CaO, SiO₂) in the traditional magnesia-chromium bricks.

Comparison with traditional magnesium chromium bricks
 

Advantages:

1. High temperature resistance and thermal shock resistance
        Withstand temperatures up to 1700 ℃ or more, short-term can withstand 1800 ℃ instantaneous high temperature.
        Low coefficient of thermal expansion, good thermal shock stability, can adapt to frequent temperature fluctuations (such as copper reflector furnace start and stop conditions).

2. Excellent slag erosion resistance
        The introduction of Cr₂O₃ forms a dense oxide layer, which effectively resists the chemical erosion of molten sulfides (e.g., Cu₂S) and alkaline slag in the copper smelting process.
        Strong resistance to penetration prevents molten slag from penetrating into the interior of the brick body and causing structural damage.

3. High strength and abrasion resistance
        High density (bulk density ≥2.9g/cm³) and low porosity (<18%), maintaining structural stability under high temperature and pressure.
        It is suitable for copper reflector furnace vaults, furnace walls and other key parts that are susceptible to mechanical scouring and chemical corrosion.

4. Environmental protection and long life
        Reduce the risk of hexavalent chromium (Cr⁶⁺) generation in high temperature use by optimizing the formulation (e.g., reducing the free Cr₂O₃ content), which is in line with environmental protection requirements.
        Typical service life is up to 12-18 months (about 8-12 months for conventional magnesium-chromium bricks).

Project Implementation: From Technology Adaptation to Localized Services

 In order to ensure the smooth implementation of the project, ZINFON FACTORY adopts the double-driven strategy of "technology + service":

       Accurate working condition matching: Based on the complex composition and high sulfur content of Nigerian copper ore, ZINFON FACTORY optimizes the product formula to enhance the sulfide corrosion resistance.

       Full-cycle technical support: guiding installation, providing training on refractory masonry, oven baking and subsequent maintenance to ensure that the customer team masters the operation specifications.

       Supply chain guarantee: respond quickly to customer needs, realize on-time delivery of products, and shorten the cycle of customer shutdown and transformation.

Cooperation results: a model of win-win cooperation

 Extending the life of the reflector furnace, reducing the maintenance cost, and the quality of the product meets the international standard, helping the customer to expand the high-end copper market.

 This cooperation not only injects kinetic energy for the upgrading of Nigeria's copper mining industry, but also lays the foundation for ZINFON FACTORY to further develop the African market. In the future, ZINFON FACTORY will continue to plow into refractory technology innovation, promote the complementary resources and technology in China and Africa, and build a sustainable industrial future together.

Zinfon Refractory Technology Co.,Ltd

We are a refractory material supplier integrating R&D,production,construction,warehousing and commerce.

We are offering various magnesia and alumina refractories including both shaped and unshaped products, raw materials and related chemical products.

We are certified to ISO9001, ISO14001, ISO45001 and other national and local certifications as follows:

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