Cement News tagged under: Technical forum
Dependency: Part 203 February 2014, Published under Cement NewsIn the second of a two-part Technical Forum Dr Clark continues his exploration of the complex dependencies involved in delivering a successful cement project. The fictional cement company, Ruritania Cement, is used to illustrate those dependencies from the placing of a contract and the contract-effective date to the day when the first cement is delivered to a customer from the cement plant. This was indeed a proud moment for Ruritania Cement, even though it was more than six years sin... |
NOx in the mass balance14 August 2013, Published under Cement NewsDr Clark discusses how NOx emissions fit into the mass balance of a cement kiln. How do they arise and how can they be controlled and mitigated? Organic nitrogen compounds in the fuel used to fire the cement kiln will be oxidised to NOx in the kiln’s main burner and precalciner During 2012 a popular series of workshops were held in conjunction with the Cemtech Dubai, Jakarta and Geneva conferences on the topic of the fundamental mass balance of a cement kiln. The workshops fe... |
Making step changes08 May 2013, Published under Cement NewsDr Clark recalls the step changes in cement kiln technology and capacities that were provided by preheating and precalcining technologies. Modern day cement kilns have huge output capacities in comparison to their more basic predecessors. Long kilns needed large supporting structures Among the topics for ICR this month are preheaters and precalciners. These are items of equipment all modern cement manufacturers are well aware of or even perhaps take for granted. Those of us with... |
Gaseous emission control12 December 2012, Published under Cement NewsWith acid gas emissions being one of the topics of this ICR issue Dr Clark reflects on previous Technical Forums on this subject and the latest offerings from WL Gore in this regard. WL Gore deNOx technology The control of the acid gas emissions NOx and SO2 is periodically discussed in the Technical Forum along with the control of other gaseous emissions such as unburnt hydrocarbons, dioxins, furans, mercury and other heavy metals. The chemistry underlying the origin and mitigat... |
Top-cycle heat recovery15 August 2012, Published under Cement NewsWith the publication of an article on the Holcim Lägerdorf kiln in this month’s ICR, Dr Michael Clark muses on the mass and energy flows of such a semi-wet kiln system, even speculating that there will be differences in those energy flows required in winter and summer. Holcim Lägerdorf is the starting point of this month’s Technical Forum’s foray into mass and energy flows of semi-wet kiln systems Recent Technical Forum articles have largely been focused around the cemen... |