- 埃肯
- 先进的制造业和工业领域
- 耐火材料
- 微硅粉在定型制品中的应用
微硅粉：定型耐火材料制品的首选原材料之一
耐火材料: 采用各种材料和形式来应对各种挑战
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。
根据不同的矿物和化学特性，耐火材料以不同的形式设计和供应： 浇注料 、 预制件 和定型制品。本文研究的后者是以不同尺寸和形状交付的耐火材料。这些 " 模块 " 是预先烧制的，并使用标准的砌筑技术进行安装。这与浇注料不同，浇注料是在交货状态下直接使用的散状耐火粉料（通常转化为整体或无缝耐火内衬），与液体混合，在需要时加入一种或多种添加剂。定型制品也与预制件不同，预制件是模制或预铸组件，其形状通常很复杂，用于直接安装在熔炉和窑炉的功能部件中。
埃肯微硅粉 (MICROSILICA®)：高性能定型制品的质量标杆
定型制品或耐火砖的优点在于，其尺寸和成份含量可以定制，以适应温度分布和热变化，防止腐蚀和炉渣，排斥与耐火内衬接触的熔融材料，并适应外壳的几何参数。定型制品还可在安装过程进行广泛的选择，同时还考虑经济因素，如材料成本、所需设备、人工成本、劳动法规和合同或监管要求，以及时间限制、安装技能和当地服务提供商的可用性。
定型制品的性能可用 微硅粉 来定制，以满足特定的加工和最终产品特性，并为耐火材料制造商提供额外的优势，即在安装前进行场外预测试，确保满足客户的应用要求。这使得制造商可以根据耐火外壳的尺寸、规格、物理性能和耐化学性方面准确选择所需的形状，以确保关键部件在高温和可变加热 / 冷却循环下的完整性，并能耐化学腐蚀和机械应力。定型产品制造商还可用添加剂来改善干粉的流动性、提高密度，并在高温下获得毫石 / 镁橄榄石的形成。
Microsilica
埃肯是微硅粉技术的全球领导者，为定型耐火材料提供多种 ELKEM MICROSILICA® 产品。这些硅或硅铁生产工艺中产生的副产品由超细无定形二氧化硅（SiO2）球体组成，具有纯度高的特性，可对各种高温应用的特定性能要求产生重大影响。
以下是我们用于制作定型制品的产品非详尽列表，其中许多产品也适用于浇注料（非成型产品）和预制件。埃肯专家、技术人员和销售人员可以为您的特定应用探索适当的解决方案：
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.
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
了解用于耐火应用的不同硅基材料，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。
More about Refractory applications
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