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List of Stockpile Management Projects in NT


ALCAN GOVE BAUXITE OPERATIONS - REFINERY EXPANSION - STRUCTURAL/MECHANICAL
Mining - Earthworks/Civil Engineering (Stockpile Management) project for New development. Refinery expansion will increase production from a current 2 Mt/y to 3.8Mt/y in 2007. Proposed expansion includes stockpiling and handling. Bauxite will not be exported from Gove anymore but will be directed to the refinery. Stockpile sizes will remain the same, but stacker and feed conveyor systems will be upgraded or replaced and the refinery reclaimer will also be replaced. Three new grinding mills will be installed to replace the old rod and ball mills. One new mill slurry tank and pump transfer system together with one train of indirect mill slurry equipment will be installed. The heated feed will now be processed in a new high temperature double digestion process. A third low temperature digestion plant will be installed, as well as deep-cone thickners and high pressure pumps. The mud and liquor residue will be seperated in pressure decanters and processed through a train of new high rate washers and a single train of five deep cone thickners. The existing washers and thickners will be used for storage of residue liquids. Some will be demolished. Six new vertical pressure filters will be installed in a new security filtation area to process most of the turbid liquor flow from the thickners. Agglomeration precipitators and growth precipitators will be added to increase capacity as well as two interstage cooling facilities will be installed on each growth precipitator train. Flash vessels and a barometric condenser will be installed using cooling water from new cooling towers. A new hydrocyclone classification system with three classification stages allowing three different sized hydrate streams to be produced will be installed. A new filtration area and equipment will be installed to conduct filtration of various hydrate streams. Equipment will include six drum filters, vacum pumps and air blowers. Three new stationary calciners will be installed in conjunction with new hydrate conveyors and upgraded aluminia transfer systems. A new evaporation plant will be installed as well as cooling towers for vapour removal in the last three flash stages. Lime plant capacity will be increased from 140 t/h to 200 t/h by installing a new burner system and modifying the kiln's internal geometry. A new burnt lime storage silo will be installed. The existing power station will be converted from fuel oil to gas that will involve a new boiler and associated turbine units. The neutralisation plant will include a mixing tank and two thickners in a bunded area. New liquor purification plant will be constructed involving two seperate plants for the mixing and drying stage. Click for more details...

ALCAN GOVE BAUXITE OPERATIONS - REFINERY EXPANSION - ELECTRICAL/INSTRUMENTATION
Mining - Earthworks/Civil Engineering (Stockpile Management) New project at Gove Peninsula North West Arneham Land via, Gove, NT 0880. This type is Electrical/Instrumentation with Private ownership. Refinery expansion will increase production from a current 2 Mt/y to 3.8Mt/y in 2007. Proposed expansion includes stockpiling and handling. Bauxite will not be exported from Gove anymore but will be directed to the refinery. Stockpile sizes will remain the same, but stacker and feed conveyor systems will be upgraded or replaced and the refinery reclaimer will also be replaced. Three new grinding mills will be installed to replace the old rod and ball mills. One new mill slurry tank and pump transfer system together with one train of indirect mill slurry equipment will be installed. The heated feed will now be processed in a new high temperature double digestion process. A third low temperature digestion plant will be installed, as well as deep-cone thickners and high pressure pumps. The mud and liquor residue will be seperated in pressure decanters and processed through a train of new high rate washers and a single train of five deep cone thickners. The existing washers and thickners will be used for storage of residue liquids. Some will be demolished. Six new vertical pressure filters will be installed in a new security filtation area to process most of the turbid liquor flow from the thickners. Agglomeration precipitators and growth precipitators will be added to increase capacity as well as two interstage cooling facilities will be installed on each growth precipitator train. Flash vessels and a barometric condenser will be installed using cooling water from new cooling towers. A new hydrocyclone classification system with three classification stages allowing three different sized hydrate streams to be produced will be installed. A new filtration area and equipment will be installed to conduct filtration of various hydrate streams. Equipment will include six drum filters, vacum pumps and air blowers. Three new stationary calciners will be installed in conjunction with new hydrate conveyors and upgraded aluminia transfer systems. A new evaporation plant will be installed as well as cooling towers for vapour removal in the last three flash stages. Lime plant capacity will be increased from 140 t/h to 200 t/h by installing a new burner system and modifying the kiln's internal geometry. A new burnt lime storage silo will be installed. The existing power station will be converted from fuel oil to gas that will involve a new boiler and associated turbine units. The neutralisation plant will include a mixing tank and two thickners in a bunded area. New liquor purification plant will be constructed involving two seperate plants for the mixing and drying stage. Click for more details...

CHINESE SOUTH EXTENDED & MOTTRAMS GOLD MINE PROJECT
Mining - Earthworks/Civil Engineering (Stockpile Management) project at Doulgas Station, Stuart Hwy, 12km North of Hayes Creek Wayside Inn, via, Pine Creek, NT 0847 for New. The company proposes to recommence gold mining operations. Mining is proposed to commence on two deposits within this area. The proposed mining development consists of two open cut pits and will employ conventional open cut excavation methods. No mineral processing will occur on these sites. The ore will be transported by road, approximately 62km south-east, for processing. The major components of the proposed Chinese South Extended and Mottrams development include: construction of two open cut mines, pit dewatering, water storage and management, stockpiling of ore, construction of access and haul roads; and construction of two waste rock storage facilites. Click for more details...

MCARTHUR RIVER BASE METALS OPERATIONS PHASE 3 EXPANSION
Operating Mine - Expn - Phase 3 project at 60km southwest of, Borroloola, NT 0854 in the Mining - Earthworks/Civil Engineering (Stockpile Management). A project to extend the existing pit to the east to cover 210ha (1750m x 1500m). Mining to 420m deep should increase mineable reserves from 54 million tonnes (Mt) to 115Mt. Expansion of the current fleet of rope shovels, hydraulic excavators & large haul trucks to increase the mining capacity from 2.5Mtpa to 5.5 Mtpa. Upgrade of the processing plant (expanded crushing facilities, additional grinding mills, flotation cells & thickeners) to produce up to 800,000tpa of bulk zinc/lead concentrate containing 368,000t zinc. New overburden emplacement facilities (OEF) to the east & south of the expanded pit as well as expansion of the existing North OEF from 375ha to 860ha & a height increase from 55m to 80m. Installation of a new water management dam with a low permeability liner & drainage to allow it to eventually be converted to Cell 4 of the tailings storage facility. Increase using the existing pipeline of gas fired power generation from 20MW to 45-40MW. Expansion of the permanent accommodation village by 30 then later 80 rooms. Construction of a 300 room temporary workers camp serviced by a packet sewerage treatment plant. Workforce to peak during construction at 930 & operationally at 735 permanent staff & contractors. Click for more details...

MCARTHUR RIVER BASE METALS OPERATIONS CRUSHER CIRCUIT CONTRACT
Private ownership Mining - Earthworks/Civil Engineering (Stockpile Management) project In The Roper Gulf Shire Council Area for New development. One year extension of the contract to operate the crusher circuit including feeding from the run-of-mine (ROM) stockpile. Covers the primary, secondary & tertiary crushing plants & mobile equipment. Click for more details...

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