We use cookies to enhance your experience. By continuing to browse this website, you agree to our use of cookies. More information.
Grinding is a popular and effective top-down process used to produce glass powder with particle sizes ranging from nanometers to micrometers. This article discusses a series of grinding process types used in the production of Mo-Sci's series of special glass powders.
The most common glass forms provided by Mo-Sci are microspheres, ingots and glass powders.
In particular, powder glass is essential for a series of applications throughout industry and research; for example, glass nanofillers provide obvious benefits for the development of composite materials used in dental and medical prostheses. 1,2
Due to their hydrophobicity, surface roughness and chemical inertness, these composite materials have excellent strength and excellent biocompatibility.
Nano fillers and glass powders can be produced by a "bottom-up" method such as a sol-gel process. However, these techniques are often impractical, especially when producing glass particles with complex compositions. 3
In these cases, a "top-down" solution is considered a better option, where the larger glass particles are broken down into smaller particles in a process called "milling".
It should be noted that in the context of machining, the term "milling" has two meanings. This may refer to grinding (for example, using a ball mill) or cutting (for example, using a CNC milling machine). This article uses the former meaning of the term-referring to the grinding process.
Using a "jaw crusher" will result in the roughest grinding of any process outlined here.
The jaw crusher works similarly to a standard nutcracker, crushing solid materials by applying pressure directly between a pair of mechanical "jaws".
These jaws are usually arranged vertically, which means that the gap between them will narrow as the material falls from the system.
Therefore, when the material passes through the crusher, the particle size will decrease. Once the material is processed, the crushed material will be discharged through the narrow gap at the bottom of the jaw.
Jaw crushers are heavy-duty machines commonly used in mining and quarry applications. Therefore, they are very suitable for use with materials with different hardnesses.
Jaw crushers are usually used to process larger material fragments, but they are not suitable for fine grinding. Instead, these tools can be used as a preliminary step before controlled grinding using a jet mill or a ball mill.
Hammer crushers (or hammer crushers) provide higher accuracy than jaw crushers.
This tool uses a hammer to crush the aggregate into smaller particles. It is often used to treat organic waste, paper and food, including grains and fruits. Hammer mills are also commonly used to produce glass powder.
The hammer mill is a very durable tool, suitable for rough grinding, and can be equipped with single or multiple rows of hammers.
Its adaptability and cost-effectiveness make ball milling become one of the most popular and widely used glass grinding technologies.
The ball mill used for glass processing consists of a rotating or vibrating ceramic-lined drum, which contains several balls, usually alumina, zirconia or other durable materials, to form the grinding medium.
Once the glass is added to the drum, the drum rotates, causing continuous impact and friction between the ball and the glass, and eventually breaks the glass into smaller particles.
The ball mill has excellent versatility and is available in a variety of sizes. These tools can be dry or wet milled and are compatible with a variety of grinding media.
The ball mill can also be adapted to batch or continuous processing, and the grinding size can be adjusted by changing the diameter of the ball.
Industrial ball mills can coarsely grind larger materials, while laboratory-grade ball mills are suitable for fine grinding of glass to the micron level and beyond. "High-energy" ball milling enables users to reliably grind materials into nano-sized particles. 4
Most centrifugal mills are found in laboratory equipment. The centrifugal mill uses a shearing action between the rotor and the fixed sleeve to decompose the material in a relatively clear way.
These instruments provide extremely high rotation speeds (up to tens of thousands of revolutions per minute), which facilitates rapid and complex controlled grinding of small batches of materials. The sieve allows the extraction of particles as small as tens of microns in diameter.
The jet mill is a precision equipment that uses high-speed airflow or compressed air to promote glass particles to collide indoors.
Once the particles reach a sufficiently small size, a process called cyclone separation allows the particles to leave the gas stream.
Jet mills can be used to continuously grind glass particles until they reach the required size, so that the glass powder can be ground with minimal particle size changes. 5
Similar to the ball mill, the jet mill can also grind the glass powder to sub-micron level.
Mo-Sci has extensive experience in all these grinding methods, allowing the company to provide a wide range of specialty glass powders-including powders with complex formulations that are not normally available elsewhere.
In addition to using different types of mills, Mo-Sci also uses a series of grinding media, including alumina, zirconia and yttria stabilized zirconia (YSZ), and wet grinding in alcohol or water to provide excellent results.
Made of materials originally created by Krista Grayson of Mo-Sci Corporation.
This information is derived from materials provided by Mo-Sci Corp. and has been reviewed and adapted.
For more information on this source, please visit Mo-Sci Corp.
Please use one of the following formats to cite this article in your paper, essay, or report:
Mo-Sci Corp. (September 6, 2021). Glass grinding in the production of special glass powder: equipment and technology. AZoM. Retrieved from https://www.azom.com/article.aspx?ArticleID=20713 on November 25, 2021.
Mo-Sci Corp.. "Glass Grinding in the Production of Special Glass Powder: Equipment and Technology". AZoM. November 25, 2021. <https://www.azom.com/article.aspx?ArticleID=20713>.
Mo-Sci Corp.. "Glass Grinding in the Production of Special Glass Powder: Equipment and Technology". AZoM. https://www.azom.com/article.aspx?ArticleID=20713. (Accessed November 25, 2021).
Mo-Sci Corp.. 2021. Glass grinding in the production of specialty glass powder: equipment and technology. AZoM, viewed on November 25, 2021, https://www.azom.com/article.aspx?ArticleID=20713.
Do you have any questions about this article?
In this interview, we will discuss the need for advanced solutions to semiconductor manufacturing challenges, and how Hardinge Inc. solves various semiconductor manufacturing applications through innovative products.
AZoM talks with Dr. Robert Shepherd from Cornell University. In their research, Dr. Shepherd and his team produced a key component of a technology that can make inflatable braille that changes shape under the touch of the user a reality. Triggered by burning, Dr. Shepherd and his team created a hapt
Michael is part of a team of researchers at the Massachusetts Institute of Technology, which has developed a data-driven system that accelerates the process of discovering new 3D printing materials.
The knife grinder GRINDOMIX GM 200 has two sharp, sturdy blades and a powerful 1000 W motor, making it an ideal instrument for grinding and homogenizing food and feed.
The Extrel VeraSpec atmospheric pressure ionization mass spectrometer (APIMS) is designed to provide reliable and reproducible low part-per-trillion detection limits for pollution control in ultra-high purity (UHP) gases used in semiconductor and other high-tech industrial applications.
For many years, rotovaps (rotovaps) have been the standard for laboratories and industries that perform chemistry, such as laboratories in the pharmaceutical, chemistry, life sciences, materials, environment, and cannabis sectors.
AZoM.com-AZoNetwork website
Owned and operated by AZoNetwork, © 2000-2021