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{"title":"High Purity White Reactive Alpha Alumina Powder For Refractory Castables","imgUrl":"https:\/\/img.chinax.com\/nimg\/a7\/6a\/a327826cbaf0f88ac7033007752a-200x200-1\/high_purity_white_reactive_alpha_alumina_powder_for_refractory_castables.jpg","attrs":{"Price":"Negotiation","SiO\u2082(%)":"0.03, 0.07","Na\u2082O(%)":"0.10, 0.14","D50 Cilas(\u03bcm)":"1.8, 2.5, 3.0"}}
{"title":"HUAO Customized White Reactive Alumina Micro Powder For Refractory Linings","imgUrl":"https:\/\/img.chinax.com\/nimg\/fc\/96\/c263f16be4b37682f0ad7756d453-200x200-1\/huao_customized_white_reactive_alumina_micro_powder_for_refractory_linings.jpg","attrs":{"Price":"Negotiation","SiO\u2082(%)":"0.03, 0.07","D50 Cilas(\u03bcm)":"1.8, 2.5, 3.0","Surface area\/BET(m\u00b2\/g)":"2.6, 3.0, 3.4"}}
{"title":"Customized White Reactive Alumina Powder For Refractory Spray Coatings","imgUrl":"https:\/\/img.chinax.com\/nimg\/86\/b4\/1cde5ff2bb11cc3018efd8ae6590-200x200-1\/customized_white_reactive_alumina_powder_for_refractory_spray_coatings.jpg","attrs":{"Price":"Negotiation","SiO\u2082(%)":"0.03, 0.07","D90 Cilas(\u03bcm)":"5.0, 7.0, 10.0","Na\u2082O(%)":"0.10, 0.14"}}
{"title":"Low Impurity Reactive Alpha Alumina Micro Powder For Refractory Linings","imgUrl":"https:\/\/img.chinax.com\/nimg\/33\/57\/9332a257f09d2f59e3f8886df484-200x200-1\/low_impurity_reactive_alpha_alumina_micro_powder_for_refractory_linings.jpg","attrs":{"Packaging Details":"25kgs\/1250kgs\/Jumbo(BB); or as customer's requirement","Payment Terms":"100% in advance\/ 30% TT in advance,balance payment before delivery.","Place of Origin":"Zibo, Shandong","Brand Name":"HUAO"}}
Reactive Alumina HA180 Powder for Ultra-Low Cement Castables and Engineered Structural Ceramics
HUAO Reactive Alumina HA180 is a premium-grade, sub-micron reactive alumina powder engineered for high-performance refractory and advanced technical ceramic formulations. Manufactured in our ISO 9001, ISO 14001, and ISO 45001 certified facilities, HA180 features a tightly controlled monodisperse "singlet" particle distribution with a median particle size (D50) of 1.8 μm and a BET surface area of 2.1 m²/g. As an established China reactive alumina manufacturer with over 10 years of international B2B export experience, HUAO produces HA180 using specialized thermal calcination and fine-milling technology. The resulting product exhibits rapid sintering reactivity, low water demand, and high packing density, making it an essential matrix component in low-cement (LCC), ultra-low cement (ULCC), and cement-free castable systems.
Technical Parameters
Properties / Test Methods
Unit
HA180 Typical Index
HA180 Min Index
HA180 Max Index
Na₂O
%
0.12
--
0.20
Fe₂O₃
%
0.03
--
0.05
MgO
%
0.01
--
--
SiO₂
%
0.03
--
0.08
CaO
%
0.02
--
--
Specific Surface Area (BET)
m²/g
2.1
1.5
3.0
D50 Particle Size (Cilas)
μm
1.8
1.4
2.3
D90 Particle Size (Cilas)
μm
4.5
--
6.0
Particle Distribution Type
--
Singlet
--
--
Key Features
Controlled Singlet Particle Distribution: A monodisperse singlet grain distribution guarantees tight particle size uniformity, preventing local agglomeration and promoting optimal grain packing.
Tightly Regulated Median Grain Size: A narrow median size range (D50: 1.4-2.3 μm, typical 1.8 μm; D90 ≤ 6.0 μm) ensures efficient space-filling within refractory aggregate matrices.
Low Water Absorption & Enhanced Rheology: Specific BET surface area controlled between 1.5-3.0 m²/g (typical 2.1 m²/g) enables high slurry flowability while minimizing water additions in unshaped castables.
High Chemical Purity: Strict controls over impurities—Na₂O ≤ 0.20%, Fe₂O₃ ≤ 0.05%, and SiO₂ ≤ 0.08%—preserve high-temperature refractoriness and hot modulus of rupture (HMOR).
Accelerated Low-Temperature Sintering: Fine micro-grain morphology drastically increases solid-state reactivity, accelerating full densification during firing cycles.
Applications
High-Performance Monolithic Castables: Serves as an essential reactive binder and matrix modifier in Low-Cement Castables (LCC), Ultra-Low Cement Castables (ULCC), and self-flowing castables used in steel ladles and tundishes.
Technical & Advanced Ceramics: Used in structural ceramic components, wear-resistant tiles, and high-purity electrical ceramics requiring uniform density and mechanical strength.
Shaped Refractory Products: Acts as a high-reactivity additive in fired refractory bricks and functional ceramics to enhance cold crushing strength (CCS) and resistance to thermal shock.
Why Choose HUAO
Certified In-House Production: Operating under strict ISO 9001, ISO 14001, and ISO 45001 management systems, HUAO maintains complete batch-to-batch quality tracking across every lot of reactive alumina.
Superior Flowability & Processing: The singlet particle morphology of HA180 reduces inter-particle friction, allowing formulators to achieve superior castable placement with reduced mixing liquid requirements.
Direct Factory Source & Supply Security: As a trusted global B2B supplier with dedicated milling capacity, HUAO guarantees continuous bulk delivery and stable pricing directly from our manufacturing base.
Precise Particle Size Consistency: Advanced laser diffraction testing (Cilas) ensures every batch adheres strictly to the target D50 (1.8 μm) and D90 (≤ 6.0 μm) parameters.
Customization
HUAO offers custom particle sizing, specialized surface area modifications, and tailored technical support to match client specific recipe requirements. Standard export packaging options include 25kg multi-wall paper bags, 1000kg jumbo bulk bags (ton bags), or custom palletized units with moisture-proof protective wrapping.
FAQ
Q1: What makes the "singlet" particle distribution of HA180 advantageous over multimodal reactive aluminas?
A1: The singlet monodisperse distribution of HA180 yields highly predictable packing behavior, controlled water demand, and steady drying kinetics, ideal for precision castable formulations.
Q2: What are the typical chemical purity levels for HUAO Reactive Alumina HA180?
A2: HA180 features typical impurity levels of 0.12% Na₂O (max 0.20%), 0.03% Fe₂O₃ (max 0.05%), and 0.03% SiO₂ (max 0.08%), protecting the hot strength of refractory matrices.
Q3: What is the typical BET surface area and median particle size (D50) of HA180?
A3: HA180 delivers a typical BET surface area of 2.1 m²/g (range 1.5-3.0 m²/g) and a typical D50 particle size of 1.8 μm (range 1.4-2.3 μm).
Q4: Which packaging options are available for overseas shipments of HA180?
A4: We supply direct factory shipments in 25kg bags, 1000kg jumbo ton bags, or specialized moisture-barrier packaging tailored for overseas sea freight.
We also provide other alumina products. If you would like to learn more about Alumina Ceramic Tubes, please click here.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter
Year Established:
2016
Employee Number:
6~400
Ecer Certification：
Verified Supplier
ZIBO HUAO NEW MATERIALS CO., LTD is a professional manufacturer and supplier of high-performance alumina ceramic products and refractory raw materials. With over 10 years of export experience, we act not only as a supplier, but also as the eyes of our clients to monitor prod... ZIBO HUAO NEW MATERIALS CO., LTD is a professional manufacturer and supplier of high-performance alumina ceramic products and refractory raw materials. With over 10 years of export experience, we act not only as a supplier, but also as the eyes of our clients to monitor prod...
