News
Selfclear Auto-Filtration Full-Load Verification
2026-09-04
In the purification stage of lepidolite and spodumene lithium extraction, the leachate carries a large amount of unreacted mineral residue, aluminosilicate colloids, and other suspended impurities. Solid-liquid separation is mandatory to reach the clarity required for downstream processing. For years, the industry has defaulted to a plate-and-frame filter press combined with sintered-tube (Sintered-PE) filter elements, yet this conventional process still carries a set of well-known pain points.
- Plate-and-frame filtration relies on filter cloth with a limited service life and is prone to breakthrough; sintered-tube elements face the same consumable-life limitation.
- Plate-and-frame operation requires manual cloth change-out, cake discharge, and cloth cleaning. Labor intensity is high and the on-site environment is poor; with the equipment's open structure, corrosive slurry also poses a splash hazard.
- Sintered tubes use a depth-filtration structure, and acid-wash regeneration rarely restores the desired performance in practice, forcing frequent element replacement.
Auto-Filtration, Unattended - Safer Lithium Salt Purification
Feature-Tec's Selfclear automatic filtration system delivers a fundamental change to the purification stage. The system is fully enclosed and integrates automatic feeding, filtration, cake discharge, and media regeneration. No lid opening is required across the entire operating cycle, completely eliminating the risks of corrosive-liquid splash and operator exposure. On the filtration-performance side, Selfclear supports a staged configuration of 0.5 micron primary filtration plus 0.3 micron polishing filtration; filtrate turbidity is held stably below 0.5 NTU, and filter-cake moisture is contained within 40%. All three core indicators are significantly better than the conventional process. From a running-cost perspective, the system draws less than 1 kW of installed power and can run fully unattended in automatic mode, sharply reducing operator dependency.
Filter-media reliability is the key to long-term stable operation of an automatic filtration system. Selfclear is equipped with application-specific filter cloth and supports on-line chemical cleaning. Filtration flux is recovered by combining back-flush with chemical recirculation, and the service life of a single cloth set reaches approximately one year. Combined with Feature-Tec's extensive engineering experience in filtration processes, the cloth material, structure, pore size, and back-flush parameters can be precisely matched to the slurry characteristics, avoiding the frequent blinding or breakthrough caused by improper selection. The solution is particularly suited to continuous slurry systems with a solids content between 0.1% and 3%, and has been verified at full load on a ten-thousand-ton lithium-salt production line.
For lithium-salt producers advancing smart manufacturing and headcount-efficient operations, Selfclear delivers far more than an upgrade in filtration performance. It represents a systemic leap in production mode - from batch, labor-intensive operation to continuous, automated production - raising both operational efficiency and intrinsic safety in the purification stage to a new level.
About Feature-Tec
With over 20 years of expertise in filtration, separation, and purification, Feature-Tec delivers high-performance solutions worldwide — from cartridge elements, bag filters, and depth filters to membrane systems, coalescers, filter housings, and complete filtration packages across water treatment, oil & gas, biopharmaceuticals, semiconductors, fine chemicals, and hydrogen processing. Certified by ASME VIII-1&2 and backed by CNAS/ISO 17025 / GMP-Like accredited laboratories, we provide full validation support from E&L studies to integrity testing. Cross-brand replacement solutions, helping customers optimize process reliability and equipment longevity through source-purification technology tailored to real-world demands. Contact us at marketing@feature-tec.com for professional solutions.
Contact
Hotline: (+86)400-820-6150
Email: marketing@feature-tec.com
Address: 8/F, Block A, Building 3, Tianhua Information Technology Park, 299 Longcao Road, Xuhui District, Shanghai
