Ground calcium carbonate is processed from calcite and marble. It serves as low-cost filler for coatings, plastic, artificial stone and paper industries. High-end markets pursue ultrafine powder such as 800 mesh, 1250 mesh and 2000 mesh, which brings higher profit margin. Conventional Raymond mill cannot steadily produce ultrafine powder. Insufficient classification accuracy causes coarse impurities and affects downstream product quality.
SBM independently developed LUM Ultrafine Vertical Grinding Mill, combining advanced roller technology and German multi-stage classification system optimized for ultrafine GCC processing. Adjustable powder fineness ranges 325–2500 mesh, hourly capacity from 1.5 tons to 16 tons, satisfying medium and small high-end GCC factories. Multi-stage turbine classifier delivers high cutting precision and stable D97 particle size without coarse grains, meeting strict feed standards of coating and plastic manufacturers.
Compared with traditional ring roller ultrafine mills, LUM ultrafine vertical mill reduces energy consumption by 30%–50%. The whole machine runs under sealed negative pressure without dust pollution. Hydraulic turnover structure simplifies maintenance for rollers, liners and other wear-resistant parts to shorten downtime. Multiple annual 30,000-ton ultrafine GCC projects in Guangxi and Vietnam adopt this machine. 1250 mesh and 2000 mesh calcium carbonate powder is supplied directly to coating factories and brings remarkable economic benefits.
A complete ultrafine GCC line includes primary crushing, lifting, storage, LUM ultrafine main mill, pulse dust collector, powder coating modification machine and automatic packing unit. SBM engineers adjust classification system configuration according to target fineness, providing free raw material testing, site layout, installation and commissioning service.
If you want to calculate investment of ultrafine GCC plant or watch on-site operation videos, contact us via online consultation. Send raw material information and required mesh size. Our engineers deliver customized process proposals one-to-one.
Summary: LUM ultrafine vertical mill is designed for 325–2500 mesh GCC production. Multi-stage precise classification cuts power consumption and guarantees high whiteness powder suitable for high-end plastic & coating fillers.
