FAQ
Company & Certifications
Q1 Do you have third-party testing or patents?
We own multiple independent intellectual property rights and patents and can provide test reports from third-party testing institutions (such as TÜV and SGS).
Q2 What international safety certifications does your equipment meet?
Our explosion-proof equipment has passed ISO9001:2015 quality management system certification and CE certification. Some products meet NFPA, EN, and ATEX standards. The company is also a member of the Fire and Explosion Prevention Working Group of the National Machinery Safety Standardization Committee.
Products & Technology
Q1 How to choose the filter bag material?
We offer a variety of materials including PE, PP, Aramid, PPS, PTFE, and Fiberglass. Customers can choose the appropriate filter material based on operating temperature, humidity, acidity/alkalinity, and electrostatic requirements.
Q3 How does the Explosion Isolation Flap Valve work?
As the blast shockwave propagates upwards, the valve plate quickly closes, preventing flames and pressure from entering upstream equipment, thus effectively isolating the explosion and protecting the production line and personnel.
Q2 What types of dust are Flameless Explosion Vents suitable for?
Suitable for St1 and St2 non-metallic dust and St2 metallic dust, effectively blocking flames and high temperatures to prevent secondary explosions.
Q4 What are the advantages of the Explosion-proof Classifier Milling System?
The equipment integrates dry grinding and dynamic classification, featuring nitrogen protection, full positive pressure, continuous production, and closed-loop control. Advantages include:
Explosion-proof safety: Reduces the risk of dust explosions at the source
High energy efficiency: Energy consumption is reduced by 15–20% compared to traditional ball mills
Controllable particle size: Narrow particle size distribution, stable finished product
Applications & Industries
Q1 Can you provide application examples?
We have provided design and installation services for 90% of the explosion-proof grinding systems for aluminum powder and aluminum-magnesium alloy powder in China, and serve customers worldwide. Some case studies cannot be disclosed due to client confidentiality requirements, but we can provide anonymized parameter comparisons and application scenario descriptions.
Q2 In which industries are your products mainly used?
Our equipment is widely used in:
Metal powders, battery materials, powder metallurgy
Pigments and coatings, chemicals, pharmaceuticals
Wood processing, feed, grain and agricultural product processing
Industrial dust removal and metal product processing
Production & Delivery
Q1 Does third-party inspection support apply?
We support customers or third-party organizations to conduct Factory Inspection (FAT) and Site Inspection (SAT).
Q3 What payment methods are supported?
We support T/T wire transfer and L/C letter of credit, which can be flexibly arranged based on the customer's country and order amount.
Q2 How is export packaging ensured for safe transport?
All products are packaged in international standard wooden crates that are moisture-proof, anti-static, and shockproof, suitable for sea and air transport, ensuring the safe arrival of the equipment.
Q4 What is the minimum order quantity (MOQ)?
We accept small trial orders. The MOQ varies depending on the product. Small batch orders are supported for regular accessory products.
Purchase & Payment
Q1 Do you support third-party inspection?
We support customers or third-party organizations to conduct Factory Inspection (FAT) and Site Inspection (SAT).
Q3 What payment methods are accepted?
We support T/T wire transfer and L/C letter of credit. Specific arrangements can be made flexibly based on the customer's country and order amount.
Q2 How is export packaging ensured for safe transport?
All products are packaged in moisture-proof, anti-static, and shockproof international standard wooden crates, suitable for sea and air freight, ensuring the safe arrival of the equipment.
Q4 What is the minimum order quantity (MOQ)?
We accept small trial orders. The MOQ varies depending on the product. Small batch orders are supported for standard accessories.
Work with Ruizhi – Global Dust Safety Partner
Aluminum Powder Classifier Milling system is an innovative device that integrates dry milling and dynamic classification of materials.
Ball mill is the key equipment for crushing materials after they are broken. The cylinder is generally made of welded steel plates, closed at both ends with end covers, and the inner wall of the cylinder is inlaid with wear-resistant lining to prevent the cylinder from wear.
The explosion-proof flap valve is a pressure differential self-operated dust explosion isolation valve that does not require external electrical equipment.
About Us
With 30 years of experience and 90% market share in China’s aluminum powder explosion-proof systems, Ruizhi provides safe, certified, and efficient solutions for industries worldwide.
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