Goldcorp Marlin Mine CRF Plant



Marlin Mine
Huehuetenango, Guatemala

225 tons/hour


  • Conceptual Design
  • Structural/Mechanical Engineering
  • Design & Supply of Control System
  • Supply/Fabrication of all Equipment
  • Supervision of Equipment Installation
  • Commissioning and Training


  • Aggregate Conveyors & Hopper
  • Cement Silo & Weigh Hopper
  • Dust Collector
  • Continuous Pugmill Mixer
  • All Support Structure & Platforms
  • Control Room & MCC
  • PLC Control System
  • Water System
  • Pneumatic Controls

This continuous CRF plant uses a conveyor scale to monitor aggregate flow and make corresponding adjustments to cement and water flow rates via the PLC. The totalized quantity of aggregate, cement and water determines final batch size. The continuous pugmill mixes all materials, discharging into haul-trucks.

Cement is pneumatically delivered to the cement silo and fed to the weigh hopper after each batch. Subtractive weighing is then used during the batch process.

Prepared aggregate from adjacent stockpiles is fed by front-end loader into the aggregate storage bin.

During a batch, a variable-frequency drive is used to control the cement feed screw, discharging the cement weigh hopper. Similarly, water is pumped to the pugmill and monitored by a mag-flow meter. A water control valve modulates water flow.

The PLC control system & touchscreen features  multiple recipe selection, alarming and data logging for each batch.