Corrosion-Resistant Chemical Pumps for Strong Acid Leaching Solutions
Corrosion-Resistant Chemical Pumps for Strong Acid Leaching Solutions
Recently, we received a customer's request for a pump selection solution for transporting PLS (concentrated leachate). This medium contains H₂SO₄ (sulfuric acid), has a pH value as low as 1.5-2.5, and is extremely corrosive. How can we ensure safe, leak-free, and durable transport? We tailored a high-performance, cost-effective lined pump solution for our customer. If you also face similar highly corrosive conditions, this selection case study may provide you with some guidance.
Analysis of Operating Challenges: Why Ordinary Pumps Cannot Handle the Task?
In hydrometallurgical or chemical production, PLS (concentrated leachate) typically contains high concentrations of sulfuric acid, exhibiting strong corrosiveness and oxidizing properties. Customer Requirements:
Media: H₂SO₄, pH 1.5–2.5
Flow Rate: 50–100 m³/h
Head: 20–30 m
Features: No solid particles
Requirements: Lined or polymer pump
These operating conditions place extremely high demands on the pump's chemical stability and sealing reliability. Ordinary metal pumps (such as 304 and 316 stainless steel) are highly susceptible to intergranular corrosion or pitting at this pH level, potentially leading to perforation and leakage within a short period.
For the above-mentioned strong acid, particle-free transport requirements, our technical team recommends the IHF100-80-160 fluoroplastic lined centrifugal pump. This model is specifically designed for highly corrosive media and perfectly suited for PLS conditions.
Core Parameter Configuration:
Project Recommended Parameters/Configuration
Pump Model: IHF100-80-160
Flow Range: 100 m³/h (Covering 50-100 m³/h requirements; selecting the maximum value is more reliable)
Head: 30 m (Meets 20-30 m requirements)
Suitable Power: 15 kW
Power Supply: AC380V, 50Hz, 3-phase
Sealing Type: Mechanical Seal
Impeller Material: Fluorine Alloy (F46/FEP)
Pump Casing Material: Carbon Steel Casing + PTFE Lining (PTFE/F46)
Packaging: Export-grade Wooden Crate (Moisture-proof, Pressure-resistant, Suitable for Long-Distance Transportation)
III. Why Recommend IHF100-80-160? Four Core Advantages
Fearless of Strong Acids, Excellent Corrosion Resistance
All flow-through components (impeller, pump body lining) are made of fluoroplastics (F46/PTFE). This material is virtually inert to strong acids such as sulfuric acid, hydrochloric acid, and hydrofluoric acid, and will not corrode even after long-term operation in an environment with a pH of 1.5-2.5.
Compared to rubber-lined pumps, PTFE-lined pumps are more resistant to high temperatures and oxidation, and will not carbonize or age due to sulfuric acid dehydration.
Optimized structure for particulate-free media
Since the media contains no solid particles, a standard closed impeller is used, resulting in high hydraulic efficiency and precise matching to a design point of 100 m³/h@30 m, avoiding energy waste.
Reliable sealing, eliminating leakage
Equipped with an external mechanical seal, the friction pair is made of silicon carbide/silicon carbide (or hard alloy), and the auxiliary sealing ring is made of fluororubber (FKM). Even when conveying acidic liquids with a pH of 1.5, it can guarantee no visible leakage over a long period, protecting the site environment and operator safety.
Perfect power and power supply matching
A 15kW motor is selected, with ample safety margin (calculated shaft power approximately 11-12kW) to prevent overload and burnout.
Standard AC380V/50Hz/3PH industrial power supply, no additional transformer required, plug and play.
IV. Service Commitment: More Than Just Selling a Pump
Professional Selection: Based on your medium composition (H₂SO₄ concentration, temperature), flow rate, and head, we provide calculation sheets and selection reports.
Factory Testing: Each pump undergoes hydraulic performance testing and static pressure sealing testing.
Safe Packaging: Export-grade wooden crates with internal cushioning material, suitable for domestic long-distance or sea freight shipments.
After-sales Support: Installation guidance, a list of spare seals, and a 12-month warranty are provided.
V. Conclusion
In strong acid conditions such as PLS (concentrated leachate), choosing the right material is more important than choosing a big brand. The IHF100-80-160 fluoroplastic-lined pump, with its excellent corrosion resistance, stable sealing performance, and precise flow rate-head matching, is your reliable choice for handling pH 1.5 sulfuric acid media.
If you also have similar challenges in selecting chemical pumps (sulfuric acid, hydrochloric acid, mixed acids, solvents, etc.), please feel free to contact us. We will provide you with a one-on-one technical solution!
WhatsApp: 008618049841995
