1. Real Project Story: Calcite Grinding Plant Built For Northern Vietnam Local Ore Processor

Last year we received an inquiry from a calcite mining factory based in Lang Son, Northern Vietnam. Their old small milling machine couldn’t meet local filler factory’s demand for high-fineness calcite powder, and the original equipment created heavy dust that repeatedly failed local environmental inspections. After half a month of communication and raw ore test grinding in our factory, we finalized the whole HGM130 turnkey grinding solution matching their actual factory scale.

We didn’t push them to run the mill at maximum capacity 10t/h as many suppliers do. Taking daily maintenance and machine service life into consideration, we locked the stable running output at 6 tons per hour. Local factories in Vietnam rarely operate round-the-clock, so the client chose two 8-hour shifts every day, leaving one hour for daily machine cleaning and wear parts check. In this daily 16-hour effective production window, the plant can get roughly 96 tons of qualified fine calcite powder each day.

The local calcite ore in Lang Son features low impurity and high natural whiteness, which is a perfect raw material for plastic and coating filler. We adjusted the internal classifier structure of HGM130, allowing the finished powder fineness to shift freely from 600 mesh up to 2000 mesh, so the client can supply multiple downstream buyers with different mesh standards at the same time.

2. Whole Plant Equipment Matching & Practical Working Data

The whole set grinding station centers on one HGM130 medium-speed raymond ultrafine mill, and we picked every auxiliary machine based on the client’s limited factory space and environmental protection requirements. All parameters come from real running records of similar Southeast Asian mineral plants, no empty theoretical data:

• Core Grinding Host Model: HGM130 three-ring medium speed ultrafine mill

• Normal Stable Hourly Output: 6 tons/hour (flexible range 6-10t/h based on raw ore texture and target mesh)

• Daily Finished Powder Yield: Around 96 tons (16 hours two-shift operation per working day)

• Daily Operation Schedule: Two shifts of 8 hours each, 1 hour downtime for cleaning, lubrication and equipment inspection

• Adjustable Powder Fineness: 600 mesh to 2000 mesh, no full-line shutdown needed for mesh switching

• Max Feed Ore Size: ≤25mm after primary jaw crusher crushing

• Running Mode: Full negative pressure closed circulation, zero visible dust leakage inside workshop

• Supporting Auxiliary Equipment: Vertical bucket elevator, quantitative vibration feeder, frequency conversion powder separator, double cyclone powder collector, large area pulse dust remover, PLC centralized control cabinet

3. Why This HGM130 Grinding Scheme Fits Vietnam Local Production Conditions

3.1 Moderate Load Extends Machine Service Cycle, Cut Long Term Cost

Running grinding equipment at full load every day will wear grinding rollers and rings rapidly, forcing frequent replacement of spare parts. For this Vietnamese client, we set a mild 6t/h stable load to reserve enough performance surplus. Only during seasonal peak demand of powder sales, they temporarily raise output to 7-8t/h to stock goods. This small design difference helps them cut nearly 30% annual wear parts replacement cost compared with overloaded mill solutions.

3.2 Two-shift Operation Matches Local Labor & Maintenance Habits

Most small and medium mineral factories across Vietnam only adopt two-shift operation. Local workers refuse long overnight shifts, and grinding equipment needs daily internal cleaning to stop mineral material from sticking inside the grinding chamber. Our 16-hour production plan avoids unnecessary night labor arrangement, matching the client’s existing worker schedule perfectly without extra staffing cost.

3.3 Customized Dust Removal System Solves Local Environmental Trouble

The client’s old mill failed environmental testing many times due to unprocessed flying dust. We equipped a matched large pulse dust remover specially designed for HGM130 model, covering all dust outlet positions of the whole grinding line. After on-site installation, the whole workshop stays nearly dust-free, and the client smoothly passed local industrial environmental assessment without extra reconstruction work.

3.4 Easy Operation Control System Adapted For Local Workers

We simplified the operation logic of the matched PLC control cabinet for HGM130, removing complicated professional parameters that local operators can hardly understand. One single worker can manage the whole grinding station during each shift, with real-time data display of feeding speed, powder fineness and machine running current on the cabinet screen. Operators can spot abnormal machine status quickly without professional training.

4. Main Local Downstream Industries Using This Calcite Fine Powder

The calcite powder produced from this HGM130 plant sells well in multiple northern Vietnam provinces, covering several mature processing industries:

• Inorganic filler for plastic masterbatch, rubber goods, water-based interior & exterior wall coatings

• Raw additive material for dry mortar, interior wall putty and concrete production factories

• Low-whiteness standard fine powder for flue gas desulfurization and sewage treatment neutralization

• High-purity superfine calcite powder for daily chemical, cosmetic and paper filling production

5. Overseas Project Support We Offer For Southeast Asian Calcite Milling Clients

We have finished dozens of calcite, limestone and talc grinding plant projects in Southeast Asia, including Vietnam, Thailand, Cambodia and Indonesia, so we fully grasp local factory operation rules and environmental regulatory standards.

For every client who selects HGM series ultrafine mill equipment, we provide full one-stop service: customized factory layout drawing design based on client’s workshop dimension, complete pre-assembly and running test inside our factory before shipment, overseas on-site installation & commissioning guided by our professional technical engineers, long-term supply of original wear spare parts at factory direct price.

Apart from HGM130 model, we also supply matched grinding line schemes for HGM100, HGM125 and HGM160 models, to satisfy small, medium and large mineral powder production demands for global overseas markets.