Talk:Lignite: Difference between revisions

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Ash content

The ash content for the lignite is way lower than the lignite used for power production in Eastern Europe and other places. Lignite with up to 40% ash content (when dry) is used and there is bibliography and links about this. However, I don't know if the figures given in the wikipedia page are ash content for water-free lignite or for lignite as is (with 40-60% water) so I don't edit it. Please be more specific. — Preceding unsigned comment added by Apavlides24 (talk • contribs) 12:48, 15 February 2013 (UTC)[reply]

brown coal

Lignite. See Brown coal.

Types of Lignite The three "types" of Lignite listed under the header Types of Lignite all have links referring to the paragraph they are contained in.

"xyloid lignite or fossil wood and the second form is the compact lignite or perfect lignite." I have removed the links. —Preceding unsigned comment added by Ptrask (talk • contribs) 14:40, 4 June 2009 (UTC)[reply]

Germany

According to a report from Federal Ministry for the Environment,Nature Conservation and Nuclear Safety (In Germany) the contribuition from Lignite in power production was a lot higher. 151.1 TWh in 2006 (23.7%), 155.1 TWh in 2007 (24.4) and 150.8 TWh in 2008 (23.7%). Where does the numner 11% come from I wonder? —Preceding unsigned comment added by Ki98mama (talk • contribs) 09:38, 30 October 2009 (UTC)[reply]

Chemistry

Hmm, I was hoping for a bit more of chemistry and scientific facts, such as the chemical composition, distribution on carbon and other elements, perhaps an illustration showing what the composistion looks like on atomic scale - if that is possible? Is there an expert on the subject who can provide some of that? :-) Medico80 08:56, 30 June 2007 (UTC)[reply]

coking

Can't you coke the stuff? 132.205.44.5 (talk) 04:47, 11 February 2008 (UTC)[reply]

image

I try to insert a second picture, but i failed. I like this

[1]

or this most impressive panorama [2] --Entrophie (talk) 20:01, 5 March 2008 (UTC)[reply]

Close up Image

I am going to try and find an image that is close-up of this Mineraloid

Denton22 (talk) 17:49, 13 March 2008 (UTC)[reply]

Hazelwood Power Station

I do not know enough if adding Australia to the end of Hazelwood Power Station, Victoria will break the link, but it does need to be done, as it is quite confusing on first read as to where the powerstation is located. —Preceding unsigned comment added by 134.117.251.4 (talk) 16:20, 18 October 2010 (UTC)[reply]

Technological advance

Yesterday, Australian miner T. Forrest announced in the World Economic Forum in Davos that he will be initiating to turn lignite into Diesel in Pakistan. This is extremely significant if this will reduce pollution which is extremely high when burning lignite/brown coal. I had thought 'they' had given up on turning brown coal into diesel. Research was stopped at one point some years ago.

Environmentalists and others had hoped that the heavily polluting Hazelwood Power Station in Victoria could be closed down through the carbon tax, carbon trading (or something), but this has not happened, because of costs, jobs, and of course the financial loss of the nearby brown coal mining operations. If there now exists a process that the mining can continue and the power can be generated through diesel, that is a game changer for Australia, and the rest of the world. 121.209.53.9 (talk) 02:55, 24 January 2014 (UTC)[reply]

Seam thickness conundrum

"The coal seams are up to 100 metres thick, with multiple coal seams often giving virtually continuous brown coal thickness of up to 230 metres."

So...are they up to 100 m thick or up to 230 m thick? - 68.2.235.85 (talk) 04:08, 8 December 2015 (UTC)[reply]

100 m. The "multiple coal seams often giving virtually continuous..." is the clue. Vsmith (talk) 12:28, 8 December 2015 (UTC)[reply]

External links modified

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Lignite always contains sulfur

(=> it is necessary to filter the exhaust gases of coal power stations fueled by lignite) ... but the word 'sulfur' is'nt mentioned in the article. Can some native speaker write sth. about that in the article ? thanks in advance, --Neun-x (talk) 19:17, 1 April 2018 (UTC)[reply]

Unclear about moisture content?

I am a bit confused about the numbers … currently the article says that lignite has "carbon content around 60–70 percent, a high inherent moisture content sometimes as high as 75 percent", which on the face of it doesn't seem to add up. Perhaps it should be clearer? My understanding is that brown coal can indeed contain a very large amount of water when its first dug out of the ground, but this rapidly reduces as it dries. I believe the carbon content mentioned above is as a percentage of solids, ie. excluding the water. Is that correct? Logicman1966 (talk) 16:39, 4 March 2019 (UTC)[reply]

Is lignite really, always equal to brown coal, everywhere?

I don't think lignite is totally equal to brown coal, as the article claims. I think brown coal, i.e. coal with frequently identifiable plant imprints and sometimes partly carbonized parts in it, can be deep-shaft mined in some places, just like black coal or anthracite. On the other hand, lignite is always surface mined (industrially strip-mined or ad-hoc open pit mined) and it doesn't have the "rocky" consistency expected of real coal.

The lowest-grade lignite is sometimes called "burning slate" in Eastern Europe, especially if it has less than 4000kcal/kg thermal value, thus unable to meat the legal definition for coal. That burning slate usually looks like a wafer of alternating, very thin layers of lignite and inorganic content. 80.99.11.157 (talk) 16:20, 2 May 2019 (UTC)[reply]

@@ Line 94: / Line 94: @@
 I am a bit confused about the numbers … currently the article says that lignite has "carbon content around 60–70 percent, a high inherent moisture content sometimes as high as 75 percent", which on the face of it doesn't seem to add up. Perhaps it should be clearer? My understanding is that brown coal can indeed contain a very large amount of water when its first dug out of the ground, but this rapidly reduces as it dries. I believe the carbon content mentioned above is as a percentage of solids, ie. excluding the water. Is that correct? [[User:Logicman1966|Logicman1966]] ([[User talk:Logicman1966|talk]]) 16:39, 4 March 2019 (UTC)
+== Is lignite really, always equal to brown coal, everywhere? ==
+I don't think lignite is totally equal to brown coal, as the article claims. I think brown coal, i.e. coal with frequently identifiable plant imprints and sometimes partly carbonized parts in it, can be deep-shaft mined in some places, just like black coal or anthracite. On the other hand, lignite is always surface mined (industrially strip-mined or ad-hoc open pit mined) and it doesn't have the "rocky" consistency expected of real coal.
+The lowest-grade lignite is sometimes called "burning slate" in Eastern Europe, especially if it has less than 4000kcal/kg thermal value, thus unable to meat the legal definition for coal. That burning slate usually looks like a wafer of alternating, very thin layers of lignite and inorganic content. [[Special:Contributions/80.99.11.157|80.99.11.157]] ([[User talk:80.99.11.157|talk]]) 16:20, 2 May 2019 (UTC)