1. Overview of Diatomite
1.1 Definition and Formation
Diatomite, also known as diatomaceous earth (DE) or kieselguhr, is a soft, porous, naturally occurring sedimentary rock. It is formed by the fossilized remains of diatoms — single-celled aquatic photosynthetic algae that have existed on Earth for over 100 million years.
These microscopic organisms possess intricate silica-based cell walls (frustules). After death, their remains settle in aquatic environments including lakes, oceans, and marshes. Over millions of years, geological compression and mineralization accumulate these frustules into diatomite deposits. The mineral is globally mined in ancient aquatic basin regions, such as the United States, China, Germany, and Denmark.Made of high‑purity alumina ceramic with interconnected microporous structure. It absorbs essential oils via capillary effect and releases fragrance steadily without flame. Porosity adjustable from 20%‑45% to match your diffusion speed requirement. Chemical inert, non‑toxic, RoHS compliant. Custom threads, cut‑outs, special shapes and engraved logos are available. More durable than gypsum diffuser stones. Widely applied for car diffusers, home fragrance sets, wardrobe fresheners, aroma device wick components. Support OEM & ODM according to your drawings
1.2 Classification and Grade Standards
Based on processing methods, diatomite is mainly divided into two categories: natural diatomite and calcined diatomite.
Natural diatomite is directly mined and crushed for use. Calcined diatomite is treated at 600–1000℃ to remove organic substances, densify pore structures, and improve filtration performance and mechanical strength.
High-end food-grade and pharmaceutical-grade diatomite undergoes deep purification to reduce heavy metals and impurities, complying with FDA and EU international food safety standards. Featuring abundant reserves, low processing cost and eco-friendliness, diatomite is a vital sustainable material with continuously expanding application scenarios.
2. Core Characteristics of Diatomite
2.1 Physical Structure Characteristics
Diatomite’s physical properties are derived from fossilized diatom frustules, with high porosity as its core feature.
It has a porosity of 80%–90% and a large specific surface area, delivering strong adsorption capacity for liquids, gases and fine particles. Its rigid frustule structure maintains good stability under pressure, with excellent wear resistance and filtration performance.
The only physical limitations are low natural plasticity and relatively low mechanical strength caused by high porosity, which can be effectively improved by modification treatment.
2.2 Chemical Properties
The main chemical component of high-quality diatomite ore is amorphous SiO₂ (80%–95%), with trace impurities of Al₂O₃, Fe₂O₃ and organic matter.
It features excellent chemical inertness, resisting corrosion from most acids and alkalis (except hydrofluoric acid). Meanwhile, it is non-toxic and environmentally friendly, which guarantees safe application in food, pharmaceutical and environmental protection fields.
2.3 Thermal Performance
Diatomite has outstanding thermal performance with a high melting point of 1650–1750℃. It possesses excellent thermal stability and low thermal conductivity, making it an efficient and reliable thermal insulation and fire-resistant material for industrial and construction scenarios.
3. Advantages of Diatomite Ceramic
3.1 Excellent Adsorption and Filtration Performance
The ultra-high porosity and large specific surface area are the core competitive advantages of diatomite. Different from conventional filter materials, it achieves efficient adsorption and filtration effects.
It can accurately capture micro-particles, heavy metals and organic impurities while ensuring the smooth flow of liquids and gases, with comprehensive filtration performance far superior to traditional filter materials.
3.2 Safe and Non-toxic with Stable Chemical Properties
Benefiting from stable chemical inertness and non-toxic properties, diatomite is extremely safe for food, beverage and pharmaceutical production. It requires no additional safety protection measures and will not cause secondary pollution to processed products, meeting strict industrial safety requirements.
3.3 Lightweight and High Thermal Insulation Performance
Diatomite is lightweight and high-temperature resistant. It will not bring extra load to building and industrial materials. In addition, it can effectively enhance the thermal insulation and sound insulation performance of products, realizing multi-functional optimization of materials.
3.4 Economical and Environmentally Friendly
As a natural mineral, diatomite has abundant global reserves and low mining and processing costs, serving as a cost-effective alternative to synthetic materials.
It is fully biodegradable in natural environments. Its application as natural insecticide and soil conditioner reduces the dependence on chemical agents, perfectly fitting the requirements of sustainable green development.
4. Industry-Specific Applications of Diatomite Ceramic
4.1 Food and Beverage Industry
As a high-precision, food-grade filtration aid (over 60% of global usage), diatomite removes tiny impurities down to 0.1 μm. It is widely used for clarifying beer, wine, juice and edible oil and complies with FDA and EU safety standards.
4.2 Water Treatment Industry
Thanks to high porosity and strong adsorption, it effectively removes suspended solids, heavy metals and organic pollutants, suitable fordrinking water, industrial wastewater and swimming pool water purification.
4.3 Construction & Building Materials Industry
Added to mortar, concrete, fireproof coatings and interior paints, it improves thermal insulation, sound insulation and fire resistance, and can regulate humidity and adsorb formaldehyde for eco-friendly interiors.
4.4 Daily Chemical Industry
With fine particles and mild abrasiveness, purified diatomite is safe for toothpaste, facial scrubs and metal polishes, providing gentle cleaning without scratching surfaces.
4.5 Agricultural Industry
It acts as a zero-residue natural insecticide for crop and grain storage pest control, and serves as an efficient carrier for slow-release fertilizers and pesticides to optimize soil structure.This multi-functional porous ceramic material integrates filtration, insulation, catalysis and environmental purification performance, realizing multi-scenario and multi-purpose application. It solves the shortcomings of single function, poor adaptability and easy aging of traditional single-function filter and thermal insulation materials. With strong compatibility with various industrial equipment and environmental protection systems, it can adapt to diversified and complex working conditions. It simplifies enterprise equipment configuration, improves overall operational efficiency, and provides reliable technical and material support for modern industrial intelligent production and efficient environmental governance.
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项目
Item
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陶土头/渗灌管Infiltration Cup |
植物吸水棒
Plant Water
Absorbing Wick
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电极砂芯
Electrode Wick
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陶瓷芯棒Ceramic Wick
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曝气板/管
Aerator plate/tube
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香薰陶瓷
Scented Ceramic
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真空陶瓷吸盘
Vacumm Ceramic Chuck
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废水废气处理微孔陶瓷
Porous Ceramic for water and gas treatment
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白色氧化铝
White Alumina
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碳化硅
Silicon Carbide
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|
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密度(g/cm³)
Density
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1.6-2.0
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0.8-1.2
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1.8-2.2
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0.8-1.2
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2.5-2.6
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1.6-2.0
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1.7-2.0
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2.8-3.2
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2.6-3.0
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开放孔率(%) Open Porosity
Rate
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30-40
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50-60
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20-30
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40-60
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30-35
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30-45
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35-40
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NA
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NA
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气孔率(%) Porosity Rate |
40-50
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60-75
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25-40
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60-75
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35-36
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40-50
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40-45
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30-40%
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30-40%
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吸水率(%)
Water
Absorption
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25-40
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40-70
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10-28
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40-70
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20-23
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25-40
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25-35
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NA
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NA
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孔径 ( μm） Pore Size |
1-5 |
1-3 |
1-3 |
1-3 |
1-3 |
1-5 |
1-10 |
2-50μm |
20-80μm |
Development History
Patents and certification
We’ve obtained various global certifications includingIATF16949，CE, EMC, LVD, RoHS, FDA, MSDS, ISO 9001, SGS and TUV. We also own eight registered trademarks and forty technical patents to support independent R&D.
Our proprietary core technologies run through all product lines: porous ceramics, industrial ceramic components, special glass, metallized ceramics, liquid absorption cotton, ozone generators and silicone goods. All products are manufactured in strict accordance with international quality standards, delivering reliable and high-performance solutions that have gained wide recognition and market trust worldwide.
Package
We adopt scientific and standardized packaging solutions tailored to product characteristics to effectively prevent collision, extrusion, dust and moisture damage. With mature global transportation system and strict shipment inspection procedures, we ensure all products remain intact and stable during long-distance delivery, providing customers with safe, efficient and reliable one-stop logistics service.
Services
Inquiry & Customization
We provide fast and accurate quotation response for all your inquiries. Flexible OEM & ODM customization solutions are available to meet your unique product design, packaging and branding requirements.
Order Quality Control
We keep clients updated with full production progress throughout the whole order cycle. Our QC team carries out strict comprehensive pre-shipment inspection to guarantee all goods comply with your quality standards before delivery.
Customs Document Support
We prepare a full set of standard export documents including commercial invoice, packing list, certificate of origin and other certification papers, to ensure smooth global customs clearance for shipments to all destinations worldwide.
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FAQ
01
Question: Can you produce based on customers’ drawings or physical samples?
Answer: Absolutely yes. We accept technical drawings in all mainstream file formats as well as actual physical samples. Before formal production, our engineering team will provide a full professional DFM feasibility evaluation for your reference.
02
Question: How long is the production lead time for custom orders?
Answer: Sample lead time: 3–7 working days. Custom mold lead time: 5–10 working days (we will confirm the cycle separately with you for complex molds). Mass production lead time: 7–20 working days, depending on product structure complexity and order quantity.
03
Question: What’s your minimum order quantity for custom products?
Answer: We provide flexible MOQ solutions for all customized items. We will try our best to set a low minimum order volume to support your small-batch trial orders, meanwhile we can handle stable mass production to satisfy your long-term bulk demands.
04
Question: What customization services can you provide?
Answer: We support comprehensive one-stop customization, including product size, shape, appearance, precision tolerance, surface treatment, hole grooving, bending, cutting and adjustable high-temperature resistant parameters. Custom engraved LOGO and exclusive customized packaging are also available as extra personalized options upon request.
05
Question: Do you accept third-party inspection of finished products?
Answer: Yes, we fully cooperate with all mainstream authorized third-party testing institutions. Well-known organizations such as SGS, BV and other internationally recognized inspection bodies are all acceptable. We can supply complete official inspection reports and material certification documents as you require.
06
Question: Can you customize raw material options for products?
Answer: Sure. We can select and match appropriate raw materials according to your application scenarios, working conditions and performance requirements, including alumina, zirconia, quartz, silicone and other special engineering materials, and adjust related performance parameters to meet your usage standards.
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