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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
Microsilica, a microscope view
Microsilica

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。

Silicon based materials for refractories​

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.

Product data sheet

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.

Product data sheet

SioxX®-Quick

Designed to act as an accelerator in undispersed aluminosilicate systems like dry gunning LCC and ULCC mixes without clay.

Product data sheet

 

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.

Product data sheet

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.

Product data sheet

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.

Product data sheet

 

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.

Product data sheet

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.

Product data sheet

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。

Silica Fume / Microsilica

Silica fume is a byproduct of the production of silicon metal or ferrosilicon alloys, and is a highly reactive pozzolanic material that is used as a supplementary cementitious material in concrete to improve its properties.

Read more about silica fume

Silicon powder / micronized silicon

Silicon powder is a finely ground, micronized form of elemental silicon that is used in a wide range of industrial applications, including metallurgy, ceramics, electronics, and more.

Read more about silicon powder

Specialties for Refractories

Specialties for refractories are various types of silicon products specifically designed for use in high-temperature applications. 

Read more about specialties for refractories

 

埃肯- 材料颗粒级配分析软件

埃肯- 材料颗粒级配分析软件

通过我们的软件优化您的材料颗粒级配,充分利用埃肯微硅粉产品的达到最佳使用效果。

more about Refractory applications

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