Dos Santos International Goes Green at Canadian Diamond Mines
Fifteen years ago, “going green” wasn’t quite the popular phrase that it is today. However, that many years ago, Joseph Dos Santos, President of Dos Santos International was presented with a challenge to go green like no other. The challenge? Use the least amount of space possible to process and separate one of Earth’s greatest treasures. This was the motivation for the newest installations in the DSI Snake Sandwich High-Angle Conveyor portfolio.
The first project came to fruition in the Northwest Territories, at Canada’s first completely underground diamond mine – Snap Lake. The frozen tundra, untouched by industry, holds beautiful diamonds deep beneath the surface. The Snap Lake ore body is a dyke that dips an average of 12-15° from the northwest shore down under the lake. Kimberlite, the diamond bearing ore, is brought to the surface, to a processing facility, where the diamonds are extracted. Because of the hostile environment the facilities must be enclosed and heated. A smaller footprint for the plant was determined to be the optimal way to minimize environmental impact and cost.
Because of Snap Lake’s remote location, building and operating the mine required careful planning. This led to pursuit of the DSI Snake Sandwich High Angle Conveyor because of its space saving features. In the process building, the kimberlite must be elevated then discharged into the various crushing, screening and sorting functions. The original concept was to use a multitude of DSI Snake Sandwich conveyors to minimize the facilities. This was ultimately rationalized to require only two DSI Snakes, which now define the facility’s minimal footprint (see photo with data table). The ability to convey at any high angle made the DSI Snake Sandwich Belt Conveyor ideal. The sandwich belt technology imparts a gentle yet firm hugging pressure on the material in the belt sandwich. This allows the precious gems within the kimberlite to be elevated at high angles without damage or spillage. The Snap Lake project incorporates two DSI Snakes, each travelling to opposite ends of the building. The units were standardized at 36” belt width to simplify spare parts inventory. Design of the units included provision for future upgrade, from 275 t/h to 524 t/h, merely by increasing the belt speed. By operating at the lower speed until the upgrade is required the Snakes’ optimal energy efficiency is preserved.
The success of Snap Lake then led to the incorporation of DSI Snakes with confidence into the Victor Project in Northeastern Ontario. This success continues at the Victor Project, Ontario’s first diamond mine, where three DSI Snake Sandwich units are operating. Simplification of inventory was further exercised at the Victor Project with all units at 42” belt width. However, tonnage requirements for these units vary from a low of 185 tph at unit 11 to a high of 422 tph at unit 12. For prolonged equipment life and energy conservation, unit 11 is run at a slower speed than the other units.
The Snap Lake Mine is operated by DeBeers with a commitment to maintain the highest environmental standards. It is the only diamond mine in the Northwest Territories that certified its environmental management systems to the high international standard, ISO 14001 through advanced exploration, construction and pre-operations. Dos Santos International is proud to assist in the environmentally conscious mission of this project. Dos Santos International has been at the forefront of a technology not only versatile and unique in itself, but useful in creating an environmentally friendly, cost efficient means of showing the world the sparkling beauty this Earth of ours beholds.
DS 01
DSI Snake #1 Sandwich Conveyor
for
Continental CN at Snap Lake Diamond Mine
(Initial / Future)
Material- Kimberlite
- Density- 1.6 t/cu-m (100 PCF)
- Size- 32 mm (1.3”) minus
Conveying Rate- 275/550 t/h (303/606 STPH)
Conveying Angle- 49.5 degrees
Belt Width- 914 mm (36”)
Belt Speed- 1.5/2.2 m/s (295/433 FPM)
Lift- 18,310 mm (60.1’)
Length- 39,015 mm (128’)
Snake Drives
- Top Belt- 22.4/44.8 kW (30/60 HP)
- Bottom Belt- 22.4/44.8 kW (30/60 HP)
DS 02
DSI Snake #2 Sandwich Conveyor
for
Continental CN at Snap Lake Diamond Mine
(Initial / Future)
Material- Kimberlite
- Density- 1.6 t/cu-m (100 PCF)
- Size- 50 mm (2”) minus
Conveying Rate- 250/500 t/h (276/552 STPH)
Conveying Angle- 49.5 degrees
Belt Width- 914 mm (36”)
Belt Speed- 1.5/2.2 m/s (295/433 FPM)
Lift- 18,310 mm (60.1’)
Length- 70,562 mm (231.5’)
Snake Drives
- Top Belt- 22.4/44.8 kW (30/60 HP)
- Bottom Belt- 22.4/44.8 kW (30/60 HP)
For more information on this project as well as many other Snake installations, please visit:
Snake Sandwich Conveyor
Dos Santos International Goes Green at Canadian Diamond Mines
Fifteen years ago, “going green” wasn’t quite the popular phrase that it is today. However, that many years ago, Joseph Dos Santos, President of Dos Santos International was presented with a challenge to go green like no other. The challenge? Use the least amount of space possible to process and separate one of Earth’s greatest treasures. This was the motivation for the newest installations in the DSI Snake Sandwich High-Angle Conveyor portfolio.
The first project came to fruition in the Northwest Territories, at Canada’s first completely underground diamond mine – Snap Lake. The frozen tundra, untouched by industry, holds beautiful diamonds deep beneath the surface. The Snap Lake ore body is a dyke that dips an average of 12-15° from the northwest shore down under the lake. Kimberlite, the diamond bearing ore, is brought to the surface, to a processing facility, where the diamonds are extracted. Because of the hostile environment the facilities must be enclosed and heated. A smaller footprint for the plant was determined to be the optimal way to minimize environmental impact and cost.
Because of Snap Lake’s remote location, building and operating the mine required careful planning. This led to pursuit of the DSI Snake Sandwich High Angle Conveyor because of its space saving features. In the process building, the kimberlite must be elevated then discharged into the various crushing, screening and sorting functions. The original concept was to use a multitude of DSI Snake Sandwich conveyors to minimize the facilities. This was ultimately rationalized to require only two DSI Snakes, which now define the facility’s minimal footprint (see photo with data table). The ability to convey at any high angle made the DSI Snake Sandwich Belt Conveyor ideal. The sandwich belt technology imparts a gentle yet firm hugging pressure on the material in the belt sandwich. This allows the precious gems within the kimberlite to be elevated at high angles without damage or spillage. The Snap Lake project incorporates two DSI Snakes, each travelling to opposite ends of the building. The units were standardized at 36” belt width to simplify spare parts inventory. Design of the units included provision for future upgrade, from 275 t/h to 524 t/h, merely by increasing the belt speed. By operating at the lower speed until the upgrade is required the Snakes’ optimal energy efficiency is preserved.
The success of Snap Lake then led to the incorporation of DSI Snakes with confidence into the Victor Project in Northeastern Ontario. This success continues at the Victor Project, Ontario’s first diamond mine, where three DSI Snake Sandwich units are operating. Simplification of inventory was further exercised at the Victor Project with all units at 42” belt width. However, tonnage requirements for these units vary from a low of 185 tph at unit 11 to a high of 422 tph at unit 12. For prolonged equipment life and energy conservation, unit 11 is run at a slower speed than the other units.
The Snap Lake Mine is operated by DeBeers with a commitment to maintain the highest environmental standards. It is the only diamond mine in the Northwest Territories that certified its environmental management systems to the high international standard, ISO 14001 through advanced exploration, construction and pre-operations. Dos Santos International is proud to assist in the environmentally conscious mission of this project. Dos Santos International has been at the forefront of a technology not only versatile and unique in itself, but useful in creating an environmentally friendly, cost efficient means of showing the world the sparkling beauty this Earth of ours beholds.
DS 01
DSI Snake #1 Sandwich Conveyor
for
Continental CN at Snap Lake Diamond Mine
(Initial / Future)
Material- Kimberlite
- Density- 1.6 t/cu-m (100 PCF)
- Size- 32 mm (1.3”) minus
Conveying Rate- 275/550 t/h (303/606 STPH)
Conveying Angle- 49.5 degrees
Belt Width- 914 mm (36”)
Belt Speed- 1.5/2.2 m/s (295/433 FPM)
Lift- 18,310 mm (60.1’)
Length- 39,015 mm (128’)
Snake Drives
- Top Belt- 22.4/44.8 kW (30/60 HP)
- Bottom Belt- 22.4/44.8 kW (30/60 HP)
DS 02
DSI Snake #2 Sandwich Conveyor
for
Continental CN at Snap Lake Diamond Mine
(Initial / Future)
Material- Kimberlite
- Density- 1.6 t/cu-m (100 PCF)
- Size- 50 mm (2”) minus
Conveying Rate- 250/500 t/h (276/552 STPH)
Conveying Angle- 49.5 degrees
Belt Width- 914 mm (36”)
Belt Speed- 1.5/2.2 m/s (295/433 FPM)
Lift- 18,310 mm (60.1’)
Length- 70,562 mm (231.5’)
Snake Drives
- Top Belt- 22.4/44.8 kW (30/60 HP)
- Bottom Belt- 22.4/44.8 kW (30/60 HP)
For more information on this project as well as many other Snake installations, please visit:
https://edir.bulk-online.com/profile...ernational.htm
http://www.google.com/search?hl=de&c...btnG=Suche&lr=
Attachments
dos_santos_2_snap-lake (JPG)
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