Jiangsu Haifa Machinery Manufacturing Co., Ltd.

Thermal power FGD desulfurization, mining tailings, phosphorus chemical and salt chemical industries are driving the upgrade of slurry pump seals from traditional packing seals to Flushless Mechanical Seals, Zero-Leakage Slurry Seals and Water-Saving Seals. Gypsum discharge slurry, limestone slurry, phosphoric acid extraction and tailings media typically exhibit simultaneous characteristics of high solids content, high chloride ion concentration, high crystallization and strong abrasiveness. Seal faces are not only subjected to particle erosion but also face risks of crystallization blockage, pitting corrosion and dry friction. KSB latest mining case in 2026 shows that LAPIS mechanical seal developed for highly abrasive slurries has achieved over 3,000 hours of continuous operation; Weir's new-generation WARMAN MCR² also focuses on wear-resistant materials, condition monitoring and full life-cycle reliability as key priorities for slurry pump upgrades. Jiangsu Haifa Machinery Manufacturing Co., Ltd. (www.jslgpump.com) is developing an adjustable waterless新型 seal for thermal power FGD desulfurization circulation pumps, gypsum discharge pumps, limestone slurry pumps, mining slurry pumps and phosphorus chemical extraction pumps, to reduce the impact of traditional external flushing water on slurry concentration and system water balance. Friction pairs can be selected according to operating conditions from pressureless sintered silicon carbide SSiC, reaction-bonded silicon carbide RBSiC, hard alloy and carbon graphite; metal parts can be configured with corrosion-resistant materials such as 304 316L, 5, 2507 and 1.4529, and auxiliary seals can use FKM or FFKM depending on temperature and corrosiveness. International slurry seal products also extensively use combinations of SiC, hard alloy, duplex steel and FKM/FFKM, that material systems are converging toward wear resistance and high corrosion resistance. For existing equipment of imported brands such as KSB, WARMAN, EKATO, Chemineer, MUT, SADIK and SHARPE, Jiangsu Haifa can carry out localized replacement adaptation based on shaft diameter, seal chamber dimensions, rotational speed, pressure, particle concentration and media corrosiveness, rather than simply "one-to-one universal" by brand. For high-chloride slurries, 2205, 2507 or higher-grade alloys should also be selected in combination with chloride ion concentration, pH, temperature and solid particles. The core of future leak-free slurry pumps will be the collaborative design of Flushless Slurryals, Self-Lubricated Mechanicalals, Anti-Crystallization Seal Chambers, Corrosion-Abr Resistant Materials and Condition Monitoring, upgrading pump seals from "consumable parts" to predictable, maintainable high-reliability systems. Chinese Chinese Technical Direction | Waterless mechanical seals, silicon carbide friction pairs and high-chloride corrosion-resistant material design for power FGD desulfurization circulation pumps, gypsum discharge pumps, limestone slurry pumps, mining tailings pumps and phosphorus chemical extraction pumps. Chinese Materials | Jiangsu Haifa Machinery Manufacturing Co., Ltd.: Technical direction for high-solids, high-corrosion slurry pumps, wear-resistant and corrosion-resistant materials, and localized seal replacement. Company website: www.jslump.com English References English Reference | KSB,LAPIS Slurry Seal Offers 3000 Hours of Continuous Operation at Gold Mine in Mexico," October 23, 202. This case shows that the LAPIS slurry mechanical seal has operated continuously for over 3,000 hours under highly abrasive conditions, and adopts a structure optimized for slurry accumulation, axial displacement and radial runout. English Reference | KSB, Mechanical Seals and Supply Systems – LAPIS. Suitable for Mining and Flue Gas Desulphurisation; friction pairs can use SiC, SiC-Si or Tungsten Carbide; metal parts can use Duplexless Steel; solids content can reach 40%. English | Weir, "WAR MCR² Next-Generation Mill Circuit Pump," August 26, 2026. The new-generation slurry pump integrates Hydraulics, Wear Management, Serviceability and Condition Monitoring. English Reference | AESSEAL, "Statement for Use of Mechanical Seals in Slurry Applications," March 24, 2026. The document specifically discusses industrial slurry seal design such as FGD, and emphasizes self-venting, open liner and anti-accumulation design forGD slurry seal chambers. English Reference | EagleBurgmann,tex Mechanical Seal. Seal faces can SSiC and carbon graphite; seals are available in FKM and FFKM; metal parts use corrosion-resistant materials such as L. English Reference | EagleBurgmann, SulfAce Mechanical Seal for Crystallizing Media. For crystallizing media, SiC friction pairs, FKM/FFKM auxiliary and anti-blocking structures are adopted, indicating that Anti-Crystallization Seal Design has become an important direction for special media sealing.