Zirconia Ball Applied in Refractory Material Grinding to Enhance High-Temperature Resistance

2025-10-27

在耐火材料行业,随着高温工业(如钢铁、水泥、陶瓷等领域)对材料性能要求的不断提高,耐火材料的高温稳定性、力学强度及化学惰性成为核心技术指标。而耐火材料的性能很大程度上取决于其原料的研磨细度与颗粒级配,研磨环节作为原料预处理的关键步骤,对最终产品质量影响深远。传统研磨介质如氧化铝球、钢球等,在高温环境下易出现硬度下降、磨损加剧等问题,难以满足现代耐火材料对高效、稳定研磨的需求。在此背景下,氧化锆球凭借其卓越的高温性能与物理化学稳定性,逐渐成为耐火材料研磨领域的优选介质。



氧化锆球的材料特性:高温稳定性的核心保障

氧化锆球的核心优势源于其独特的材料组成与晶体结构。作为以氧化锆(ZrO₂)为主要成分的研磨介质,其性能主要取决于氧化锆纯度、晶粒尺寸及添加物(如氧化镁、氧化钇等)。高纯度氧化锆球(通常95%以上ZrO₂含量)在高温下可保持稳定的四方晶相或单斜晶相,通过“相变增韧”机制提升抗热震性,使其在1500℃以上仍能维持较高硬度与耐磨性。相比传统氧化铝球(Al₂O₃含量90%-95%),氧化锆球的硬度(HV10约1200-1500)更高,且具有更低的热膨胀系数(约10×10⁻⁶/℃),可有效减少因温度变化导致的研磨介质开裂或变形,延长使用寿命。此外,氧化锆球化学稳定性优异,在与耐火材料原料(如氧化铝、硅砂、黏土等)接触时,不易发生化学反应,避免引入杂质影响材料纯度。

在耐火材料研磨中的应用优势:效率与质量的双重提升

在实际应用中,氧化锆球在耐火材料研磨环节展现出显著优势。首先,其高硬度与低磨损率可大幅提升研磨效率。通过氧化锆球的冲击与研磨作用,耐火材料原料(如刚玉、莫来石、尖晶石等)能被快速细化至微米级甚至亚微米级,且研磨过程中球耗低(年磨损率通常<0.1%),减少因介质磨损引入的杂质,同时降低研磨设备的维护成本。其次,氧化锆球的加入可优化耐火材料的微观结构。细化后的颗粒分布更均匀,坯体致密度提高,经高温烧结后,材料的高温抗折强度、荷重软化温度等指标显著提升,满足高温工况下的长期使用需求。例如,在陶瓷结合剂耐火材料中,采用氧化锆球研磨可使原料粒度分布更窄,坯体干燥强度提高15%-20%,烧成后高温强度提升约10%。此外,氧化锆球的密度(约6.0-6.2g/cm³)适中,在球磨机中可与不同密度的原料形成合理配比,避免因密度差异导致的沉降或偏析,进一步保障研磨均匀性。

行业应用趋势与发展前景:推动耐火材料产业升级

随着全球高温工业的快速发展,耐火材料向高性能、长寿命、低能耗方向转型已成为必然趋势。氧化锆球作为关键研磨材料,其市场需求持续增长,尤其在高端耐火材料领域(如不定形耐火材料、功能型耐火材料)的应用比例不断提升。目前,国内多家大型耐火材料企业已将氧化锆球纳入核心研磨介质体系,通过优化球料比、研磨时间及设备参数,实现了生产效率提升30%以上,产品合格率提高5%-8%。未来,随着氧化锆制备工艺的成熟(如纳米级氧化锆粉体的应用)以及成本的逐步优化,氧化锆球将在中低端耐火材料市场进一步普及。同时,针对特殊工况(如含硫、含碱金属环境),掺杂其他氧化物(如Cr₂O₃、SiO₂)的氧化锆复合研磨球也将成为研究热点,以满足更复杂的研磨需求。

FAQ:

Q1:氧化锆球与传统氧化铝球在高温性能上的主要差异是什么?

A1:氧化锆球耐高温性更优,使用温度可达1500℃以上,氧化铝球约1200℃;氧化锆球抗热震性更强,经1000℃急冷急热后不易开裂,且硬度更高(HV10约1500 vs 氧化铝球HV10约1000),研磨效率提升20%-30%。

Q2:在耐火材料研磨中,如何选择氧化锆球的规格(如直径、纯度)?

A2:根据原料硬度选择纯度:硬度过高的原料(如熔融石英、碳化硅)选98%氧化锆球;中等硬度原料(如刚玉、莫来石)选95%氧化锆球;直径方面,球磨机容积小时选φ5-10mm小球,大容积设备选φ10-20mm中球,球料比建议3-5:1。

Q3:氧化锆球在研磨过程中是否会对耐火材料的纯度产生影响?

A3:优质氧化锆球杂质含量极低(Fe₂O₃<0.1%,Na₂O<0.05%),化学稳定性好,研磨时不会与耐火材料原料发生反应,且自身磨损率低(年磨损率<0.1%),可有效避免杂质引入,保证材料纯度与性能稳定。

We use cookie to improve your online experience. By continuing to browse this website, please agree to our use of cookie.

Cookies

Please read our Terms and Conditions and this Policy before accessing or using our Services. If you cannot agree with this Policy or the Terms and Conditions, please do not access or use our Services. If you are located in a jurisdiction outside the European Economic Area, by using our Services, you accept the Terms and Conditions and accept our privacy practices described in this Policy.
We may modify this Policy at any time, without prior notice, and changes may apply to any Personal Information we already hold about you, as well as any new Personal Information collected after the Policy is modified. If we make changes, we will notify you by revising the date at the top of this Policy. We will provide you with advanced notice if we make any material changes to how we collect, use or disclose your Personal Information that impact your rights under this Policy. If you are located in a jurisdiction other than the European Economic Area, the United Kingdom or Switzerland (collectively “European Countries”), your continued access or use of our Services after receiving the notice of changes, constitutes your acknowledgement that you accept the updated Policy. In addition, we may provide you with real time disclosures or additional information about the Personal Information handling practices of specific parts of our Services. Such notices may supplement this Policy or provide you with additional choices about how we process your Personal Information.


Cookies

Cookies are small text files stored on your device when you access most Websites on the internet or open certain emails. Among other things, Cookies allow a Website to recognize your device and remember if you've been to the Website before. Examples of information collected by Cookies include your browser type and the address of the Website from which you arrived at our Website as well as IP address and clickstream behavior (that is the pages you view and the links you click).We use the term cookie to refer to Cookies and technologies that perform a similar function to Cookies (e.g., tags, pixels, web beacons, etc.). Cookies can be read by the originating Website on each subsequent visit and by any other Website that recognizes the cookie. The Website uses Cookies in order to make the Website easier to use, to support a better user experience, including the provision of information and functionality to you, as well as to provide us with information about how the Website is used so that we can make sure it is as up to date, relevant, and error free as we can. Cookies on the Website We use Cookies to personalize your experience when you visit the Site, uniquely identify your computer for security purposes, and enable us and our third-party service providers to serve ads on our behalf across the internet.

We classify Cookies in the following categories:
 ●  Strictly Necessary Cookies
 ●  Performance Cookies
 ●  Functional Cookies
 ●  Targeting Cookies


Cookie List
A cookie is a small piece of data (text file) that a website – when visited by a user – asks your browser to store on your device in order to remember information about you, such as your language preference or login information. Those cookies are set by us and called first-party cookies. We also use third-party cookies – which are cookies from a domain different than the domain of the website you are visiting – for our advertising and marketing efforts. More specifically, we use cookies and other tracking technologies for the following purposes:

Strictly Necessary Cookies
These cookies are necessary for the website to function and cannot be switched off in our systems. They are usually only set in response to actions made by you which amount to a request for services, such as setting your privacy preferences, logging in or filling in forms. You can set your browser to block or alert you about these cookies, but some parts of the site will not then work. These cookies do not store any personally identifiable information.

Functional Cookies
These cookies enable the website to provide enhanced functionality and personalisation. They may be set by us or by third party providers whose services we have added to our pages. If you do not allow these cookies then some or all of these services may not function properly.

Performance Cookies
These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. They help us to know which pages are the most and least popular and see how visitors move around the site. All information these cookies collect is aggregated and therefore anonymous. If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance.

Targeting Cookies
These cookies may be set through our site by our advertising partners. They may be used by those companies to build a profile of your interests and show you relevant adverts on other sites. They do not store directly personal information, but are based on uniquely identifying your browser and internet device. If you do not allow these cookies, you will experience less targeted advertising.

How To Turn Off Cookies
You can choose to restrict or block Cookies through your browser settings at any time. Please note that certain Cookies may be set as soon as you visit the Website, but you can remove them using your browser settings. However, please be aware that restricting or blocking Cookies set on the Website may impact the functionality or performance of the Website or prevent you from using certain services provided through the Website. It will also affect our ability to update the Website to cater for user preferences and improve performance. Cookies within Mobile Applications

We only use Strictly Necessary Cookies on our mobile applications. These Cookies are critical to the functionality of our applications, so if you block or delete these Cookies you may not be able to use the application. These Cookies are not shared with any other application on your mobile device. We never use the Cookies from the mobile application to store personal information about you.

If you have questions or concerns regarding any information in this Privacy Policy, please contact us by email at . You can also contact us via our customer service at our Site.