Sulfonic Acid Curing Agent PEEK Gear Pump

This PEEK gear metering pump is a positive-displacement pump specifically designed for handling sulfonic acid curing agents (such as p-toluenesulfonic acid and benzenesulfonic acid) used in furan and phenolic resin processes.

To withstand the highly corrosive nature of these acidic agents, the gears and pump body are constructed from modified PEEK, while the seals utilize FFKM (perfluoroelastomer). This design resolves common issues associated with standard stainless steel pumps-such as corrosion, flow rate drift, and metering inaccuracy-making it ideal for the precise dosing and delivery of curing agents in self-hardening resin sand casting production lines.

Features
1. High Resistance to Sulfonic Acid Corrosion: Gears and friction components are made of modified PEEK (a high-performance engineering plastic), offering resistance to strong acidic curing agents such as p-toluenesulfonic acid and alkylbenzenesulfonic acid. The material does not swell or corrode, preventing media contamination and significantly extending the pump's service life.
2. High-Precision Volumetric Metering: Flow rate is strictly linear to rotational speed, with a metering repeatability of ±0.5%. This ensures precise control of the curing agent addition ratio (25–65% of the resin), stabilizing the molding sand curing speed and ensuring consistent casting quality.
3. Self-Lubricating, Suitable for Low-Viscosity Media: PEEK material possesses inherent self-lubricating properties. Since sulfonic acid curing agents lack lubricity, the pump operates stably without relying on the medium for lubrication, minimizing the risk of seizing or jamming.
4. Reliable Sealing Solutions: Comes standard with FFKM (perfluoroelastomer) seals; options include double mechanical seals and a magnetically driven, leak-free design to prevent acidic media leakage and protect both the equipment and the operating environment.
5. Strong Process Adaptability: Compatible with curing agent viscosities ranging from 10 to 5,000 mPa·s. It can be paired with servo or variable-frequency drive (VFD) motors, integrated directly into automatic furan resin sand-mixing and dosing systems, and supports continuous 24-hour production.

Compatible Media
Sulfonic acid curing agents, p-toluenesulfonic acid, benzenesulfonic acid, and alkylbenzenesulfonic acid; suitable for conveying curing agents used in furan resin and phenolic resin casting processes.

Application Industries
Foundry Industry: Metered dosing of curing agents for self-hardening furan resin sand and resin sand production lines.
Fine Chemical Industry: Metered transfer of acidic catalysts and highly corrosive additives.

FAQ

Q1: Can PEEK gear pump handle sulfonic acid curing agent?

A: Yes. Modified PEEK gears together with FFKM seals resist p‑toluene sulfonic acid and other strong‑acid curing agents, avoid corrosion and flow drift.

Q2: Can it connect to resin‑sand automatic batching machine?

A: Yes, flow linear to speed, support servo/VFD motor for accurate curing‑agent proportion.

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