6 Units MTW138 European Trapezium Mill Dolomite Large-Scale Grinding Station For Indonesian Mineral Raw Material Enterprise
Indonesia boasts huge reserves of high-purity dolomite mineral resources, and the local artificial stone, daily glass and refractory material industries have expanded rapidly in recent years. Before cooperating with us, the customer adopted multiple small traditional Raymond mills with scattered layout, low single machine output, high energy consumption per ton powder and unstable finished fineness, which could not meet the large-scale raw material supply demand of downstream industrial parks. To realize centralized large-volume continuous production and reduce unit production cost, the customer customized 6 sets parallel full-process grinding production line matched with MTW138 European trapezium mill with us.
Our technical team carried out on-site sampling and full performance test of local dolomite ore, and finally selected MTW138 upgraded European trapezium mill as core grinding equipment. The machine adopts integral bevel gear transmission, built-in thin oil automatic lubrication, curved air duct and reinforced four sets thickened grinding roller components, with stable operation and low failure rate. Instead of long-term full-load 20t/h overload operation for each single machine, we set single machine stable production load at 12 tons per hour. Balanced mild load operation effectively slows down the abrasion speed of grinding roller and ring liner, extends the replacement cycle of wear-resistant accessories, and greatly reduces the annual maintenance budget of the whole plant with 6 units running simultaneously.
The whole processing workshop adopts dual-shift operation mode commonly used by local large mineral processing enterprises. Two independent 8-hour production shifts are arranged every working day, with one hour reserved for centralized equipment cleaning, lubrication and comprehensive safety inspection. Under simultaneous stable operation of 6 sets MTW138 mills, the factory can produce about 1440 tons of high whiteness qualified dolomite fine powder every day. The powder fineness of each unit can be independently adjusted between 180 mesh and 700 mesh to flexibly match the diversified fineness requirements of artificial stone factories, glass melting workshops and refractory material manufacturers under the customer’s industrial group.
Centralized Workshop Layout And Full Set Supporting Equipment Configuration
The 6-units dolomite grinding line adopts centralized modular parallel layout, equipped with shared raw dolomite feeding silo and independent sealed finished powder storage silo for each mill, realizing automatic closed-loop centralized production without manual material transfer links. All MTW138 main grinding machines, vertical elevators, conveying pipelines, sealing accessories, pulse dust removal units and touch screen PLC centralized control cabinet are delivered as a complete full set, without customers needing to purchase auxiliary matching parts separately locally. Three senior field technical engineers from our team traveled to the project site to guide integral steel frame assembly, 6-units equipment hoisting, multi-pipeline unified docking and full-line stable commissioning, and the whole centralized grinding station reached full-load formal supply production within 24 days after all cargo arrived at the port.
The closed-loop processing flow of each single machine covers raw dolomite feeding, MTW138 European trapezium fine grinding, air powder classification, pulse bag dust collection and finished powder sealed storage, forming an uninterrupted independent production branch without processing blind spots. Detailed single machine equipment configuration and actual stable running indicators are listed below:
Core Grinding Equipment: MTW138 upgraded European trapezium mill, equipped with 4 sets thickened wear-resistant grinding roller assemblies
Single Machine Stable Hourly Production Capacity: 12 tons/h, adjustable range 6.5–15t/h, fluctuates with dolomite ore hardness and target powder mesh number
6-Units Total Daily Output Of High Whiteness Dolomite Fine Powder: Around 1440 tons, 16 hours effective continuous production under two shifts
Adjustable Finished Powder Mesh Range Per Unit: 180–700 mesh, independent online real-time adjustment without stopping other parallel mills
Maximum Allowable Feed Particle Size: Dolomite raw stone ≤35mm after primary jaw crushing treatment
Single Machine Production Operation Mode: Fully sealed negative pressure circulating grinding, ultra-low dust overflow inside the centralized workshop
Full Supporting Equipment For Each Unit: Shared raw dolomite storage silo, constant quantitative vibrating feeder, MTW138 trapezium mill, high-efficiency air powder classifier, large pulse bag dust collector, centrifugal induced draft fan, touch screen PLC centralized control cabinet, independent sealed finished dolomite powder silo, multi-layer safety maintenance steel platform
Core Practical Advantages Of 6-Units Centralized MTW138 Dolomite Grinding Scheme
Balanced Single Machine Load Extends Wear Parts Service Life For Mass Production Line
Dolomite ore contains scattered hard silicate impurities, long-term high-load grinding will continuously wear grinding roller and ring liner components. For overseas large-scale centralized mineral processing plants, frequent shutdown replacement of wear-resistant accessories for multiple units will bring huge production capacity loss and international logistics spare parts cost. By limiting each MTW138 mill stable output to 12t/h instead of continuous full-load overload operation, we effectively reduce the abrasion rate of all core vulnerable components, and the replacement cycle of key wear-resistant spare parts can be extended by nearly 35%, avoiding large-area unexpected production suspension triggered by simultaneous mechanical aging of multiple units.
Full Set Integrated Parallel Shipment Shortens On-Site Centralized Construction Cycle
All steel frame components, conveying main pipelines, branch pipelines, connecting flanges, sealing gaskets and driving motors for 6 units are pre-assembled and fully tested in our factory before shipment, with unified standard connecting interfaces and reserved parallel interconnection ports. Local construction teams can complete integral frame assembly and multi-unit equipment unified docking directly without additional cutting, welding or on-site transformation, greatly compressing the overall centralized workshop construction cycle and enabling the customer to officially supply dolomite powder to downstream industrial parks faster.
Matched Large Combined Bag Dust Removal System Meets Local Mining Area Environmental Emission Supervision Standards
Indonesia has strict unified supervision standards for industrial dust emissions in large mineral processing industrial parks. We matched combined large pulse bag dust collectors fully adapted to the total air volume demand of 6 sets MTW138 trapezium mill units, so that the whole centralized grinding workshop operates under fully enclosed negative pressure circulation. Almost no floating dust can be observed in the production area during normal simultaneous operation of all mills, and the whole project passed the local environmental comprehensive acceptance at one time after full commissioning.
Centralized Touch Screen PLC Control Lowers Overall Operator Training Threshold
The supporting centralized PLC control cabinet adopts streamlined multi-screen touch operation panel, which can synchronously display real-time running data of all 6 mills including raw material feeding speed, finished powder fineness, main motor load and equipment operating current. We provided four full days of centralized hands-on on-site operation training for the factory’s on-site operators; ordinary production staff can independently monitor and adjust each MTW138 trapezium mill without advanced professional industrial technical knowledge.
Main Application Fields Of High Whiteness Dolomite Fine Powder Produced By Centralized Production Line
The high whiteness dolomite powder produced by this 6-units parallel grinding station is supplied to dozens of downstream processing industrial parks all over Indonesia, covering multiple core industrial raw material fields:
Low-temperature flux raw material for artificial stone slab and terrazzo production
Magnesium-containing filling raw material for soda-lime daily glass and architectural decorative glass melting processing
High temperature resistant light mineral raw material for industrial refractory brick and casting coating manufacturing
Anti-aging inorganic filler raw material for interior and exterior water-based architectural coating and waterproof mortar production
Global Full-Cycle Turnkey Service Support For Multi-Unit Mineral Grinding Station Projects
We have delivered dozens of multi-set parallel MTW series European trapezium mill centralized grinding station cooperation projects to all regions of the globe, accumulating abundant practical experience to adjust the overall supporting scheme of production lines according to local climate conditions, environmental protection unified policies and daily large-scale factory production operation customs. Before shipment, all overseas multi-unit centralized projects will complete factory pre-assembly and aging synchronous test for each single machine to ensure complete matching of all main machines and accessories. Professional overseas technical engineers can be dispatched to provide full-cycle on-site integral installation guidance and centralized operator hands-on training services. Original factory wear-resistant spare parts for MTW138 European trapezium mills are supplied at factory direct prices all year round, with stable global sea freight logistics solutions to shorten the bulk spare parts delivery waiting period.