Preface

When you come across this article titled “Buy Inert Alumina Ceramic Balls” written by us, it means you have found a professional manufacturer of inert alumina ceramic balls with years of experience. Due to our professionalism, our product quality is more reliable; and as a direct factory, our prices are more favorable. When purchasing inert alumina ceramic balls, you can consider us – Pingxiang Yongguang Chemical Packing Co., Ltd.

Types and Prices

Material Type	Diameter Range (mm)	Reference Unit Price (USD/ton)	Remarks
Ordinary Inert Ceramic Balls	Φ3~Φ50	$430	Suitable for normal temperature and low-pressure working conditions
Low-Alumina Inert Ceramic Balls	Φ3~Φ50	$450	Applicable in slightly corrosive environments
Medium-Alumina Inert Ceramic Balls	Φ3~Φ50	$700	Main choice for conventional medium and high-pressure reactors
High-Alumina Inert Ceramic Balls	Φ3~Φ50	$800	Cost-effective option for high-temperature and high-pressure working conditions
Corundum Inert Ceramic Balls	Φ3~Φ50	1100~1600	Specialized for extreme working conditions (e.g., high temperature of 1500℃)

Note: The above prices are approximate. For specific quotations, please contact us or send an email to us.

Purchase Precautions

Working Condition Parameters

• Operating temperature of the reactor/tower (whether it exceeds 1000℃?);
• Pressure (whether it is high pressure?);
• Medium type (whether there is acid-base corrosion?).

Specification Requirements

• Diameter of ceramic balls (needs to match the catalyst/packing layer in the equipment; common sizes are Φ10~Φ50mm);
• Whether special shapes are required.

Acceptance Standards

• Whether a third-party test report (e.g., for compressive strength, alkali resistance) is required;
• Quality guarantee period (usually 1~2 years).

Qualification and Experience

Priority should be given to manufacturers that have been established for more than 5 years and have the production qualification in line with the HG/T 3683.1—2014 standard.

Testing Capability

Formal manufacturers should be equipped with compressive strength testing machines and temperature resistance testing equipment, and be able to provide test reports for each batch of products (to avoid “three-no products” – no manufacturer, no production date, no quality certificate).

Quality Agreement

Clearly specify key indicators such as Al₂O₃ content and compressive strength in the contract, as well as the testing standard (e.g., implementation in accordance with HG/T 3683.1—2014).

Price Agreement

Clarify the unit price, total price, and payment method (e.g., 30% advance payment, 60% payment upon acceptance of goods after delivery, and 10% payment upon expiration of the quality guarantee period).

Delivery Agreement

Clarify the delivery cycle (7~15 days for conventional specifications, 20~30 days for customized specifications), delivery location, and acceptance period (e.g., completion of appearance and size inspection within 3 days after goods arrival).

Key Points for Judging Quality

V. Key Points for Judging Quality: 4-Step Quick Identification to Avoid “Shoddy Products”

Even if there is a test report, it is still necessary to conduct a preliminary quality judgment through “appearance + simple testing” after the goods arrive, so as to avoid accepting unqualified products:

1. Check the Appearance: 3 “No” Standards

• No obvious defects: No cracks, corner chips, or bulges on the surface (cracks will reduce compressive strength and easily cause breakage during use);
• No size deviation: Randomly sample 10 pieces and measure with a caliper; the diameter error should be ≤ ±0.5mm (uneven size will lead to uneven air flow distribution in the equipment);
• No abnormal color: Products of the same batch should have a uniform color (e.g., high-alumina ceramics are grayish white, corundum ceramics are milky white); messy colors may indicate uneven mixing of raw materials.

1. Test Compressive Strength: Simple “Knock Test”

• Gently tap the ceramic ball with a hammer; the sound should be clear (like a “ting-ting” sound). If the sound is dull (like a “dong-dong” sound), it indicates that there are internal pores and the compressive strength is insufficient;
• If conditions permit, samples can be sent to a third party for testing (in accordance with HG/T 3683.1—2014, the compressive strength of Φ25mm high-alumina ceramic balls should be ≥10.00kN per piece).

1. Check Density: “Weighing Comparison” Method

• Take 10 ceramic balls of the same specification (e.g., Φ25mm), weigh them, and calculate the average weight per piece: approximately 12~15g for ordinary ceramics, 18~22g for high-alumina ceramics, and 23~26g for corundum ceramics;
• If the average weight per piece is significantly lower than the average range of the corresponding material, it may be due to insufficient raw material filling and low density (low density will lead to reduced wear resistance and temperature resistance).

1. Verify the Report: Focus on “2 Data Points”

• Check the test report provided by the supplier to confirm the Al₂O₃ content (it should be consistent with the agreement in the purchase contract to avoid “passing low-alumina products off as high-alumina ones”);
• Confirm the resistance to sudden temperature changes (≥300℃ according to the standard). If there are high-temperature fluctuations in the working conditions, additional temperature resistance test records should be required.