Showing results for: cement industry Articles
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Music: a metaphor for industrial ecology
The term industrial ecology (IE) with its emphasis on symbiotic factories represents a metaphor for how the manufacturing sector can be reconstituted and sent down the path of sustainable development (SD). However, that journey cannot proceed until several obstacles have been removed or circumvented. The one discussed and analysed in this paper deals with how to initiate organisationally an IE ...
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Utilization of lime-dried sludge for eco-cement clinker production: effects of different feeding points
Co-processing lime-dried sludge (LDS) in cement kilns is an appropriate technique to solve the problem of LDS disposal and promote the sustainable development for cement industry. However, there were limited studies that investigated the effects of feeding points on product quality and cement kiln emissions. In this study, simulated experiments were conducted by dividing the feeding points ...
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Project - Coal Conversion to Biomass Fuel
Replacing Coal With Biomass in Cement Kilns Rawlings has completed one of the first wood waste recovery systems to introduce biomass as fuel to heat cement kilns at Mitsubishi Cement in Lucerne Valley ...
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RDF for cement kilns
The use of the cement has significantly contributed to the worldwide economies. In fact cement is considered to be the second most consumed substance in our society and apparently the amount of it, used in construction, is more than double that of the total of all other building materials, including wood, steel, plastic and aluminium. Nowadays the cement industry has important environmental ...
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Spinel Bricks
Main introduction of Magnesia-Alumina Spinel Brick: The Magnesia-Alumina Spinel Brick is made from high purity magnesia sand or fused magnesite and calcined bauxite according to different applications, and then made into different size bricks. The Magnesia-alumina spinel bricks as the chrome free products are specially developed for the transition zone of large scale dry-method cement kiln. They ...
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CaO–LOI classification system for cement kiln dust
Cement Kiln Dust (CKD), a residual of cement production, has been used effectively as a cement replacement, but there is a lack of guidance for its appropriate selection and performance in specific engineering applications. Since CKD is not a controlled product, the chemical composition and material properties differ from source to source like coal fly ash. This paper presents a dual–letter ...
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Co–processing waste materials in cement production: experience from the past and future perspectives
The neglected, municipal solid waste management has become an important issue for national and local governments in developing countries in recent times, not only because of the tremendous rise of wastes but also of the resultant environmental degradation and rising public concern. Co–processing of waste in cement plants has been used as a treatment option for certain waste material in Europe, ...
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End-of-life Tires as an Alternative Fuel (TDF) in Cement Kilns: Now Easier than Ever!
End-of-life tires are a challenging type of waste since they are difficult to shred and are expensive to treat and get rid of. However, tire derived fuel TDF is an extremely good alternative to the traditional fuels used in cement kilns, like oil, coal, and petroleum coke. The following blog presents a solution and explains how TDF can be used for heating cement kilns. The calorific value of ...
By Tana Oy
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Project Holcim Cement New York - Cement Kiln Dust Landfill Closure - Case Study
Project: Holcim Cement Landfill Location: Catskill, NY Type: Cement, Kiln, Dust (CKD) Owner: Holcim Cement (SIX: HOLN) Engineer: Arcadis ClosureTurf Size: 54 acres HydroTurf Size: 300,000 sq.ft. Completed: 2015 – Phase I, 2016 – Phase II The Holcim Cement – CKD Landfill is a 46 acre final closure cover system project located in Catskill, NY. The project is an unlined ...
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Alternative Fuel Preparation Technology Used in Cement Industry
Under the environment of global carbon emission reduction, cement production with low carbon emission is an important direction of cement industry development. How to maximize the value of solid waste is the difficulty of effective utilization of solid waste resources, and it is also a crucial process to replace fossil fuels in cement kilns. The alternative fuel preparation system provided by ...
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The fiber glass filter bags for dust air filtration from cement kiln
The fiber glass filter bags designed for cement kiln from Zonel Filtech that is made of E-fiber glass woven filter fabric with PTFE membrane laminated treatment after some special finish treatment so as to make the cement kiln dust filter bag with a much better flexibility, abrasion resistance, lower emission rate but lower resistance and very suitable to be used in the cement dust air ...
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The Benefits of Monolithic Refractory Installation in Cement Kilns
Refractory consumption in the production of cement continues to grow worldwide. As contractors look to capitalize on this application, many are looking to monolithic refractory installation as a faster, more efficient process than traditional brick refractory. Thanks to equipment improvements and material innovations — such as no-cement, colloidal silica, which offers optimal alkali ...
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Possible reuse of Egyptian controlled cement dust
Possibilities for the reuse of controlled cement dust, collected from the hopper of the electrostatic precipitators installed on the different cement kilns of two of the three biggest companies for Portland cement production located to the south of Cairo, have been investigated. Twenty-one factors representing the physical properties and mineral and chemical composition of the cement dust were ...
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Variability of NOx Emissions from Precalciner Cement Kiln Systems
In 2003, there are forty-two precalciner kilns out of about 190 total portland cement kiln systems operating in the United States. As a class, precalciner kiln systems have the lowest annual mass emissions of the oxides of nitrogen (NOx) per ton of clinker when compared to wet, long-dry and preheater kiln systems, however, like all cement kilns, precalciner systems experience significant ...
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`Variability of NOx Emissions from Precalciner Cement Kiln Systems,` presented at the 2004 AWMA annual conference
Abstract In 2003, there were forty-two precalciner kilns out of about 190 total Portland cement kiln systems operating in the United States. As a class, precalciner kiln systems have the lowest annual mass emissions of the oxides of nitrogen (NOx) per ton of clinker when compared to wet, long-dry and preheater kiln systems; however, like all cement kilns, precalciner systems experience ...
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filter bags sleeve used in cement vertical kiln from KoSa Environmental,Filter bag,Liquid Filter Housings,kosafiltration.com
filter bags sleeve used in cement vertical kiln Introduction ...
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How to Deal With Hazardous Waste?
At present,hazardous waste is a facing an increasingly serious environmental problem .so the mainstream of industrial waste disposal methods: curing landfill, biochemical method, incineration disposal method. Other hazardous waste disposal methods include high temperature steam sterilization, microwave, plasma incineration, pyrolysis incineration, wet air oxidation, advanced biology, alkali metal ...
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Continuous Mercury Monitoring Benefits Cement Plants
Antti Heikkilä from Gasmet Technologies highlights the challenges faced by mercury monitoring in cement kilns, and explains how a new continuous mercury monitoring system addresses these issues and provides process operators with an opportunity to improve environmental performance and demonstrate compliance with forthcoming legislation. Background The production of cement klinker and lime ...
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Air Rule for Cement Kilns Requires 92 Percent Cut in Mercury Emissions
Portland cement kilns will be required to reduce emissions of mercury by 92 percent as part of an Environmental Protection Agency final rule announced Aug. 9 that imposes controls for several toxic pollutants. Although most of the emissions standards in the final rule are less stringent than what the agency had proposed in 2009, the cement industry said the cost to operate the required controls ...
By Ohio Lumex
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Cement and Lime Kilns case study
Cement and Lime Kilns PROCESS DESCRIPTION Cement, lime and gypsum manufacturing processes have in common the mixing of inorganic minerals calcined at high temperatures typically using rotary kilns (vertical kilns are also used). CEMENT Regular Portland cements are the usual products for general concrete construction. The raw materials, limestone or chalk, together with clay or shale are mixed ...
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