Talk:Cement kiln

This article is within the scope of WikiProject Chemical and Bio Engineering, a project which is currently considered to be inactive.Chemical and Bio EngineeringWikipedia:WikiProject Chemical and Bio EngineeringTemplate:WikiProject Chemical and Bio EngineeringChemical and Bio Engineering articles

Climate change Mid‑importance

	This article is within the scope of WikiProject Climate change, a collaborative effort to improve the coverage of Climate change on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.Climate changeWikipedia:WikiProject Climate changeTemplate:WikiProject Climate changeClimate change articles
Mid	This article has been rated as Mid-importance on the project's importance scale.
If you are looking for ways to improve this article, we recommend checking out our recommended sources and our style guide

Engineering Low‑importance

	Engineering portal This article is within the scope of WikiProject Engineering, a collaborative effort to improve the coverage of engineering on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.EngineeringWikipedia:WikiProject EngineeringTemplate:WikiProject EngineeringEngineering articles
Low	This article has been rated as Low-importance on the project's importance scale.

Comment

I have opened up a new article for this, allowing reference from product related articles. The existing article on Portland cement references Kiln, which refers only to ceramics kilns, and which would become unweildy if extended to include every piece of equipment that is called a "kiln". I will expand this article shortly, and welcome other informed contributions.LinguisticDemographer 16:11, 1 October 2006 (UTC) I have now added a bunch of text. I am aware that the text is hard to understand without diagrams and pictures. I'll remedy that when I get a moment.LinguisticDemographer 01:59, 2 October 2006 (UTC)[reply]

Emissions section

Following incorporation of the "Emissions" article, I have tidied it up a bit. I took out the sentence:

"Investigations have shown that their (i.e. "dioxins and furans") emissions are independent of the type of input materials used and cannot be influenced by process technology measures."

I removed it because it's patently untrue on both counts. Clearly, some materials (e.g. those containing halogens) are more likely to produce D&F than others, and many plants are in fact using process technology (involving control of temperature profiles) to control them. Maybe "investigations" did show this, but obviously other investigations show the contrary. . . .LinguisticDemographer 11:27, 28 June 2007 (UTC) p.s. There is no citation in this section. It appears to be based on the report of a very comprehensive research project performed by VDZ a while back. I thought the original article mentioned it, but I can't find it in the "history". If anyone can pin it down, it would be helpful. . . .LinguisticDemographer 11:42, 28 June 2007 (UTC)[reply]

Stoichiometry

This is a wonderful article, but in the beginning section explaining what happens to the rawmix as the temperature of the kiln rises, the chemical reactions given don't seem stoichiometric.

When dolomite decomposes, I would think the proper equation would be:

   CaMg(C0₃)₂) --> MgO + CaCO₃ + CO₂  or

   CaMg(C0₃)₂) --> MgO + CaO + 2CO₂        (I don't know which is correct)

When limestone combines with silicate, I would think the equation would be:

   2CaCO₃ + SiO₂ --> Ca₂SiO₄ + 2C0₂

When limestone decomposes into calcium oxide, the equation should be:

   CaCO₃ --> CaO + C0₂

The stoichiometry is important because it shows where the carbon dioxide comes from. As mentioned in the article, cement manufacture is a major source of carbon dioxide emissions: 60% of total emissions comes from the limestone calcification process.

I didn't want to make these changes myself, because I am not an expert in these matters. Others more knowledgeable than me should make the edits.

Mhklein (talk) 20:21, 13 March 2008 (UTC)[reply]

Coal used

Here in Brazil cement industry uses sub-bituminous coal in cement production, without any problem.Agre22 (talk) 16:42, 9 January 2010 (UTC)agre22[reply]

Original Research

Substantial parts of this article were written by me. I am a well known researcher in this field. I hereby assert that all those parts of the article that were written by me and are not provided with references are the results of my own original research. Wikipedia rules state that information that is the result of original research is prohibited, and where such information is unambiguously present in an article, it is the duty of every editor to remove it forthwith. LinguisticDemographer (talk) 22:40, 15 April 2010 (UTC)[reply]

A similar wiki on the history of the industry

There is a substantial wiki on the History of the UK industry, that has been used once here for a reference. Moore, Dylan. "Cement Kilns: Introduction". www.cementkilns.co.uk. Retrieved 3 April 2018. At least this could be used to provide alternative references to the ones referred to above. --ClemRutter (talk) 09:22, 3 April 2018 (UTC)[reply]