Mining

 

"Our hands-on approach guarantees our customers cost effective engineering and superior service!"


SAMPLE PROJECTS
  • Highland Valley Copper
    Logan Lake, BC
    Detailed structural, civil, and mechanical engineering services, including field assistance for the following in-plant projects:
    • Pebble Crusher Area Improvement                                                                                                                                       Study to remove the existing 350 HP pebble crushing units and replace with larger 900 HP units. In addition a dust collection system would be installed. A New building was proposed to house the dust collection equipment. A new maintenance building was proposed which will be attached to the existing pebble crusher building and will be designed to allow the existing overhead crane to roll through. A new lube area for the new crusher lube units as well as lube storage was proposed. A new MCC building was also proposed which will be located over the new lube area.                                                                                                                                         
    • Ball Mill Discharge Magnet Installation                                                                                                                                Detailed design of magnet support structure and removable hood and unique track mounted chute arrangement for the ball mills.
    • Moly Leach Plant Dryer                                                                                                                                                           Detailed design of new hot oil piping and supporting steel and access platforms for the new moly dryer and bucket elevator. Modifications were made to the existing screw conveyors and chuting.
    • Moly Flotation Cell Replacement                                                                                                                                              The existing two banks of Denver flotation #100 (eight cells each) had reached the end of their useful life. It was decided to replace them with Outokumpu (OK) Tank Cells #10 (eight flotation cells in two banks). Our design approach is to make the changeover with minimal disruption to the production of Moly. The existing structural support steel was used and reinforced. The tank cells were covered with lids to contain the H2S gas. A manifold connected with duct work to a new scrubber. The cells will be supplied with NaHS, N2 and Co2. The two Conditioning Tanks upstream of the cells needed to be raised to accommodate gravity flow. Pump boxes (two) and pumps (four) were added to the floor level below the cells to pump concentrates to the thickeners.
    • Stacker Conveyor - Head Pulley Relocation                                                                                                                           The main mill feed conveyor’s head pulley was moved to accommodate increased belt speed
    • Corrosion Investigation of Concentrator Structural Steel                                                                                             Determination of remaining structural integrity in areas exposed to sulphide concentrates over long term.
  • Scoping Study Review
    Confidential Client
    A confidential review of a scoping study for an exploration property in Northern Europe.  SDE's review, in conjunction with JDS Energy and Mining, focused on global concentrate refining and smelting availability, concentrate shipping from a remote land locked mine site, plus labour and infrastructure availability.  Our input assisted the client to evaluate their ongoing participation in the project.
  • Molybdenum Roaster and Emissions Project
    Endako Mines
    Following on a feasibility study, (completed in late 2007), Sacré-Davey was retained by Endako Mines to complete the detailed engineering for modifications to roasting and off-gas treatment systems to match the proposed mine expansion at the Endako Mines division of Thompson Creek Metals. SDE’s component on the project was worth $20 million.

    The initial study completed by SDE showed Endako Mines that replacement of key process equipment, would increase the recovery of entrained dust at the current or and expanded rates. To remove dust at even 1% higher at a consistent rate is a substantial return at then market for Mo.

    SDE provided Process, Mechanical, Electrical, Structural and support design services to the project.
  • Sherwood Copper
    Kutcho Creek Mine, Deas Lake, BC
    SDE worked with Sherwood Copper and the rest of the Kutcho team to produce a comprehensive scoping study for the optimization and development of the new Kutcho Creek Mine.

    SDE’s responsibilities included all onsite facilities including the mill building (from the Crusher to the Concentrate Load-out), offices, maintenance shops, stores, camp, water & waste water treatment, and transportation of tailings.SDE prepared flowsheets, mass balances and equipment layouts for the mill, together with sizing of key process equipment, including flotation cells, cyclones, pumps and filter process. SDE also participated in preparation of capital and operation cost estimates.
  • Snowden Mining Group
    Confidential Client
    Assistance with a preliminary economic assessment to determine electrical power requirements for a remote 25,000 tpd process plant. Power requirements included process plant ancillaries plus infrastructure. Determination of capital cost requirement of approximately $65 million for the base power plant plus critical stand-by units.
  • MAX Molybdenum Mine     view details
    Roca Mines, north of Revelstoke, BC
    Phase 1:
    Structural review of the mill and crusher buildings, ongoing design updates and modifications in order to meet code and snow loads at the MAX site. These modifications will be completed after the building is re-erected at the MAX site.
    Phase 2:
    Sacré-Davey provided plant layout and structural engineering services for Roca’s MAX Moly project. Work included building refit, equipment foundations, platforms and complete mill structures for the 1000 TPD mine. Sacré-Davey also provided Roca with preliminary engineering for Phase 3 expansion.
  • Cement Transload Terminal     view details
    Ferenco Industrial - For the Ashgrove Cement Company, Las Vegas, Nevada
    SDE provided civil and structural engineering services for this project.

 

  • New Concrete Plant and Aggregate Depot     view details
    Lafarge Concrete, Vancouver, BC
    Preliminary planning, detailed engineering and estimating services for a new 100 cubic meter per hour concrete batch plant, 40,000 tonne aggregate depot, conveying systems, ancillary buildings and structures.
  • Automated conveyor sampler     view details
    Neptune Bulk Terminals
    Detailed design for the installation of an automated conveyor sampler for potash. Project includes, structural, mechanical, electrical and controls.
  • Dust Collector Installation
    Chemical Lime Company of Canada, Langley, BC
    Structural design services for the installation of a new dust collector system.
  • Cricket Mountain Kiln#4
    Stothert Engineering
    Structural engineering services for the upgrade and addition of a new lime kiln at Continental Lime's Crickett Mountain Plant.
  • Coal Exhaust Fan Mounting
    Continental Lime Company, Exshaw, AB
    Structural design services for the installation of a Coal Exhaust Fan. Materials Handling.
  • BHP Shell Husky Riverport
    Dennerick Engineering and Fabrication Co. Ltd., Burnaby, BC
    Structural design check of various steel tanks.
  • Coal Silo Hopper Wear
    Continental Lime Company, Delta, Utah
    Structural design services for the review and repair of a coal silo.
  • Structural Review
    Tacoma Lime Plant USA Stothert (CLI)
    Structural design and review services for the seismic upgrade of Continental Lime's Tacoma Plant.
  • Heat Recovery System     view details
    Barrick Gold - Eskay Creek Mine , Smithers, BC
    "Eskay Creek" mine is a remote mine powered completely by packaged diesel generators, with partial heat recovery. The balance of the heating requirements are met by propane heaters that are strategically placed in the plant as amenities. The purpose of this study was to quantify the cost of heat and energy savings potential that could be archived by re-configuring and improving the heat recovery system and modeling the following cases versus each other:
    • heat recovery only
    • heat recovery and propane heaters
    • propane heaters only
    In addition, the study quantified propane savings, cost of operation and a full scope and cost estimate with a construction schedule.
  • Cominco Storage Bins
    Dennerik Engineering, BC
    Structural engineering services for the installation of new ore storage bins.
  • Consolidated Magna Ventures Ltd.
    Evaluation of Flotation for Copper Oxide and Sulphide Copper Recovery, El Rosario Mine Project.
  • Silver Standard Resources Inc.
    Gold and Silver Flowsheet Design-Lunnoe Project.
  • Homestake Canada Inc.
    Evaluation of Flotation for Precious and Base Metal Recovery-Eskay Creek Project, and Waste Heat Recovery and optimization
  • International Skyline Gold Corporation
    Gold,Copper,Molybdenum and Magnetite Flowsheet Design, Bronson Slope Project.
  • Placer Dome Inc.
    Process Evaluation for the Vasilkovskoye Gold Project.
  • Teck Corporation
    Copper and Nickel Flotation Evaluation-Voisey Bay Project.
  • Imperial Metals Corporation
    Detail Design of 6.5 MM tonnes per year Processing Plant for the Mt. Polley copper-gold deposit. Work included equipment layouts in concentrator building, general arrangements of equipment, detail engineering, design of process and service piping systems.
  • Kinsenda Mine, Zaire
    Expansion of u/g Copper Mine in order to increase production from 1200 to 2000 tonnes per day, Work included development of a new production level, deepening of existing shaft, design of mining systems and selection of u/g equipment.
  • Minera Escondida Ltda., Chile
    Basic Engineering for New Tailings Pipeline and Reclaim Water System for 190,000 tpd Mill. Estimated Total Capital Cost $140 MM USD. Work included conceptual layouts of vacuum and pressure filter units, hydrocyclone, centrifuges and high-density thickeners for high water recovery rates.
  • Inco Ltd, Sudbury
    Detail Design of new Tailings Pipeline and Pumping Facility at flow rate of 7,500 usgpm that would be fitted into the existing building. Work included 3-dimensional modeling of multistage pumping, mechanical and piping details.
  • Highland Valley Copper
    Detail Design of new Tailings Pumphouse for variable flow between 50,000 to 80,000 usgpm. Pumphouse required “lifeline” reliability. This resulted in a complicated pipeline/valving network of rubber lined carbon steel/HDPE material. Project was significant with zero field re-work of piping.
  • Highland Valley Copper
    Detail Design for Highmount Relocation Project, addtion of 40,000 TPD (tons per day) capacity
  • San Salvador Mine, Codelco, Chile
    Electrical frequency conversion design
  • Plant Upgrade
    Columbia Bitulithic (now a subsidiary of Lafarge Canada Inc.), Mitchell Island
    SDE designed the pile foundations for two new steel tanks (13.4 ft dia. X 30 ft high, and 18.5 ft dia. X 33 ft high) and an elevated 10 ft dia. X 15 ft high steel mineral silo on 36 ft high steel legs. SDE worked closely with the client on the design to ensure that construction proceeded quickly with minimum disruption to existing operations.
  • Concrete Plant Engineering
    Dennerik Engineering and Fabricating Co., Ltd
    Dennerik Engineering was retained by Schwing America Inc. to carry out a design-build contract for a continuous batch plant, fabricating and installing the required equipment. SDE in turn provided engineering design services to Dennerik Engineering for the following plants:
    • RMC Concrete Products, Hansen, California
    • RMC Concrete Products, Redwood City, California
    • McLeod Concrete Products, Charlotte, North Carolina
    • Callaveras Concrete, Tracy, California

    In each case SDE provided project definition and conceptual engineering services for the design and construction of new continuous mix ready-mix concrete batch plants. Two of these projects are pending financing.


   

   

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