Narrabri Nth Caterpillar Longwall

[johnh]

Below are the photos or links to some photos of the New new Caterpillar longwall System installed this year at Narrabri Nh coal mine in NSW, the shearer is the new generation Eectra 3000 with 2x 860kw cutters, 2 x 150kw haulage , 70kw pump motor with 200l/min hydraulic pump, and a 200kw coal sizer (lump breaker)

Cutting drum is 2.7m in dia and the longwall is 300m wide with a 145 x 2m wide supports the longwall is designed to be retrofittable to a top coal caving system once the mine has assessed the goaf and roof conditions after the first two panels.

the system has a 4.5 to 5000 tph capacity

(hope the photos show)




i1152.photobucket.com/albums/p487/johnh70/IMG00024-20111201-1018.jpg

i1152.photobucket.com/albums/p487/johnh70/th_IMG00021-20111201-1017.jpg

i1152.photobucket.com/albums/p487/johnh70/th_IMG00025-20111201-1019.jpg

i1152.photobucket.com/albums/p487/johnh70/th_IMG00012-20111201-1014.jpg

i1152.photobucket.com/albums/p487/johnh70/th_IMG00012-20111201-1014.jpg

[johnh]

photos of the Caterpillar , Narrabri longwall surface buld

[rob52]

Whitehaven’s Narrabri North Longwall face to be extended from 300m to 400m

Published by Harleigh Hobbs, Assistant Editor
World Coal, Wednesday, 17 August 2016 11:45
Advertisement

Whitehaven Coal Ltd … to extend its Narrabri North Longwall, in New South Wales, from 300 m to 400 m.

The current system set a monthly production record of 1.057 million t in April…first 400 meter-wide panel in 2nd Half 2017.

Narrabri North Longwall is operating a complete Cat longwall mining system including an EL3000 Shearer, roof supports, AFCPF6 Face Conveyor and BSLPF6 Beam Stage Loader with crusher and boot end. Chocks have 2.05 m spacing, 2.25 – 4.70 m height range, 450 mm leg dia. and 13 000 kN support capacity.

Last year, the mine ordered a second EL3000 Shearer 860 kW (1380 hp) cutter head, haulage capable of 32 m/min while cutting.

Narrabri established a new calendar year production record of 8.3 million t of ROM coal in 2015. …. “As a direct consequence of the higher production levels, production costs have fallen with Narrabri confirming its place as Whitehaven’s lowest cost mine.”

2014 = 5.659Mt
2015 = 8.3 Mt of ROM coal
2016 = 6.9Mt ROM on 300m wide face (12weeks out for two (2) Longwall changeouts)
2017 = ??Mt on 300m then 400m wide face
2018 = ???Mt on 400m wide face
Noting the expansion approval to 11Mt for the 400m wide face & first 400 meter-wide panel in 2nd Half 2017
…..will be interesting to see if they get to 11Mt?


Rob

[John]

Apr 14, 2017 23:29:29 GMT -5 rob52 said:

Whitehaven’s Narrabri North Longwall face to be extended from 300m to 400m

Published by Harleigh Hobbs, Assistant Editor
World Coal, Wednesday, 17 August 2016 11:45
Advertisement

Whitehaven Coal Ltd … to extend its Narrabri North Longwall, in New South Wales, from 300 m to 400 m.

The current system set a monthly production record of 1.057 million t in April…first 400 meter-wide panel in 2nd Half 2017.

Narrabri North Longwall is operating a complete Cat longwall mining system including an EL3000 Shearer, roof supports, AFCPF6 Face Conveyor and BSLPF6 Beam Stage Loader with crusher and boot end. Chocks have 2.05 m spacing, 2.25 – 4.70 m height range, 450 mm leg dia. and 13 000 kN support capacity.

Last year, the mine ordered a second EL3000 Shearer 860 kW (1380 hp) cutter head, haulage capable of 32 m/min while cutting.

Narrabri established a new calendar year production record of 8.3 million t of ROM coal in 2015. …. “As a direct consequence of the higher production levels, production costs have fallen with Narrabri confirming its place as Whitehaven’s lowest cost mine.”

2014 = 5.659Mt
2015 = 8.3 Mt of ROM coal
2016 = ?Mt on 300m wide face
2017 = ??Mt on 300m then 400m wide face
2018 = ???Mt on 400m wide face
Noting the expansion approval to 11Mt for the 400m wide face & first 400 meter-wide panel in 2nd Half 2017
…..will be interesting to see if they get to 11Mt?


Rob

Rob, it would be interesting to see Narrabri's latest outputs per month.

[rob52]

Hi J,

Re "it would be interesting to see Narrabri's latest outputs per month."

2016_09 Narrabri North U/G-Factsheet
"2016 Actual Production - 6.9Mt ROM coal, 7.3Mt product
2017 Production Target - 8.0Mt – 8.3Mt ROM coal

Calendar Year 2016 two monthly production records of 981kt in January and 1,057kt in April.
ROM coal production for FY2016 was 6.9Mt.
The 11% reduction in FY2016 production relative to FY2015 was due to the completion of two full longwall change-outs during the year. This equates to approximately 12 weeks of lost production."

Narrabri Longwall Project Description
Pg31
"The longwall panels would have an average face extraction height of 4.2m taken from the floor of the seam (which is between 4.6m to 10m thick). The face height would be ramped back to the gate roads at a height of 3.5m at the maingate and tailgate ends."

Taking Face Height 4.2m average
4.2m*300m = 1260m^2 x 4km length = 5,040,000m^3
4.2m*400m = 1680m^2 x 4km length = 6,720,000m^3

eight (8) of Roadways ?3.5m Height x ?5.5m Width say 4.5km length (ie include Main Headings works) = 693,00m^3

693,00/5,040,000 = 13.75% so for a rough calc on weekly Longwall Production ignore the Development Roadway Coal.

Their actual forecast figures
Pg34
2.4.4 Mining Rate gives
- Table 2.7 Indicative Coal Production Schedule - Development & Longwall Coal


********
So...very simplified ie ignoring Development Roadway Coal
52Weeks - 12Weeks = 40 Weeks of Full Longwall Production = 6.9Mt
- Implies an Average of 172,500 Tons/Week for the forty (40) weeks of full production using a 300m face.
- Equates to an average of 690,000 Tons for any four week period during the forty (40) weeks of full production using a 300m face.

********
Interesting...consider the 8.3MT figure....46 Weeks @ 180,435tons allowing six (6) Weeks for the Longwall Changeout as the period between full Longwall production on separate blocks.  However 400m/300m = 1.33PU using the same average 4.2m face Height.

Time will tell.

Rob