- 埃肯
- 先进的制造业和工业领域
- 耐火材料
- 微硅粉在预制件中的应用
微硅粉：一种用于耐火材料预制件的关键原材料
耐火材料：使用不同的材料和方式满足复杂的要求
耐火材料用于提供各种高温处理装置的内衬材料 从温度为 600 °C 的烹饪烤箱到 1700 °C 以上的铁水处理，再到 温度为 1100 °C 的石化加工、1450 °C 的水泥熟料烧结等。耐火材料根据不同的矿物和化学特性，以不同的形式设计和交付：浇注料、定型制品 和预制件。后者是本文的主题，描述了预制部件或以预制组件形式交付的耐火材料，用于直接安装在熔炉和窑炉的功能部件中。使用预制件的主要优点之一是显著缩短安装时间，从而缩短现有系统的停机时间，并可简化损坏部件的维护和维修。
微硅粉：能够制造多种精密预制件
模块化预制件提供特定的高温性能和机械特性，可在现场外进行预测试，以确保在安装前满足客户的应用要求。这使得制造商可以在燃烧器单元外制造非常复杂的耐火材料衬里，使窑炉和熔炉保持正常运行。这也使耐火部件制造商使用更高等级的材料衬砌现有关键部件，从而提高耐火外壳的物理性能和耐化学侵蚀性，包括：
- 保护关键部件的完整性免受高温的影响，同时保持持续的高温，减少热损失和耐化学侵蚀性，以及由于极端高温或所有部件的周期性加热/冷却循环而产生的机械应力
- 在耐火材料的各个部分，防止壳体、原材料和最终产品之间发生不必要的反应，如磨损或化学反应
微硅粉
埃肯是微硅粉技术领域的全球领导者，可为预制部件提供诸多优势，因为使用该技术能够制造出更灵活的部件，这些部件安装更加简便，并可完美融入现有结构。埃肯预制部件用 MICROSILICA® 产品是硅或 硅铁 生产工艺的副产品，由超细无定形二氧化硅（SiO2）球体组成。它们具有高纯度特性，在高温下可以对各种应用所需的特定特性产生重要影响。
采用预制形状制成的典型部件包括煅烧炉、烟道、水泥窑窑口、喷煤管、烟气罩和流槽/盖、水泥窑闸板、出铁口、挡渣坝/墙、冲击板/块等等。
它们还用于燃烧器、喷嘴以及炉子内衬（用于铝业）。
以下是我们用于制造预制部件的产品的非详尽列表，其中许多产品也适用于定型制品和不定形耐火材料。埃肯专家、技术人员和销售人员可为您的特定应用寻求适当的解决方案。
耐火材料用硅基材料
Elkem Microsilica® 971
The ELKEM MICROSILICA® 971 product, a high quality, purpose-made, low-impurity grade, for versatile applications in refractories, available in densified (D) or undensified (U) form, to be used in advanced refractory products such as self-flowing, low, ultra-low and no-cement castables.
Product data sheet
Elkem Microsilica® HQ
The Elkem Microsilica® HQ product is a cost-effective alternative for low cement castables, with controlled and stable chemical composition, based on low alkalis and higher reactivity.
Elkem Microsilica® 968
The ELKEM MICROSILICA® 968 product, a cost-effective alternative for low cement castables, featuring a controlled and stable chemical composition.
Product data sheet
Elkem Microsilica® 955
The Elkem Microsilica® 955 product, a medium-quality grade silica fume with tight specification limits based on in-process control, resulting in higher silica content and reduced impurities.
Product data sheet
SioxX®
Designed for microsilica-containing LCC and ULCC, based on Al2O3 - SiO2 system with quick wet-out and low water demand.
SioxX®-Quick
Designed to act as an accelerator in undispersed aluminosilicate systems like dry gunning LCC and ULCC mixes without clay.
SioxX®-Zero
Designed for microsilica-gel bonded systems (NCC) to control the working and demoulding time and to develop high green-strength at room temperature.
SioxX®-Flow
Designed to work as a multi-functional microsilica dispersant, for aluminosilicate LCC, ULCC and NCC, giving customers freedom to fine-tune their products with other additives (accelerators, retarders, etc.). It enhances the rheological properties, reduces the water demand and increases the flow. Suitable also for shotcreting.
By combining both SioxX®-Flow and SioxX®-Set products, setting can be controlled. SioxX®-Flow product will also work in combination with Silica-Sol (colloidal silica) in NCC to control flow, working and setting time.When used in silica-sol systems a separate gelling agent needs to be added.
SioxX®-Set
Designed for undispersed systems mainly for NC gunning mixes. Can also be used for LC and ULC gunning. In castables and shotcrete (dispersed systems) SioxX®-Set can be used as accelerating agent.
SioxX®-Ten / SioxX®-Ten PLUS
SioxX®- Ten and SioxX®- Ten PLUS are primarily designed for ultra low cement alumina-based or microsilica-gel bonded no-cement castables.
SioxX®- Ten mainly works at the range of 800-1100ºC, while SioxX®- Ten PLUS is recommended to work at the range of 600-900ºC.
Both of them enhance the rheological properties, reduce the water demand, increase the flow, control the working and de-moulding time, help develop high green strength as well as high strength at the indicated working range of temperature.
SioxX® Mag
Designed for basic (MgO-based) refractory castables, to help avoid inherent problems of crack formation and poor workability. For advice how to best use our Specialties, contact our competent technical staff.
如果您正在寻找我们的产品安全数据表，也可以到我们的产品安全数据表中心查询
了解用于耐火材料的不同硅基材料，每种材料都具有独特的特性，专为满足高温环境的需求而制造。
耐火材料应用的更多信息
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