stepped kiln Articles

  • Shredding tyres stops zika virus breeding

    Zika is a dangerous disease threatening millions of people today in southern hemisphere. It is spread mostly by the bite of an infected Aedes species mosquito (Ae. aegypti and Ae. albopictus). These mosquitoes bite during the day and night. Once you get bitten it is too late to do much but what is important is to prevent this mosquito from breeding. Mosquitos typically lay eggs near water because ...


    By Tana Oy

  • 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 Co., Inc.

  • Impact assessment of CO2 emissions caused by exergy losses in the cement sector

    In this study, global effects caused by exergetic inefficiency are examined for rotary kiln of the cement plant. For this purpose, a rotary kiln process of a cement plant in Turkey is modelled, and the annual operation data of this process is analysed. As a first step, an exergy analysis is carried out for all of the thermal processes of the cement plant. Then exergy losses and carbon dioxide ...


    By Inderscience Publishers

  • South Asia on the clean brick road

    South Asia's brick sector needs to retrofit its existing kilns with cleaner and more efficient technology, a recent (May 9—10) workshop in Kathmandu heard. Organised by the Climate and Clean Air Coalition, Mexico's National Institute of Ecology, and the International Centre for Integrated Mountain Development in Nepal, the workshop was attended by entrepreneurs from Latin America, Africa ...


    By SciDev.Net

  • 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 ...


    By Gasmet Technologies Oy

  • Energy and Tires

    Energy consumption is known to be one of the main operational expenses that cement factories have to meet to carry out the production cycle of concrete. The process leading to the development of clinker from raw materials is a special baking made with appropriate kilns that work 24 hours a day. ...


    By SatrindTech Srl

  • A STIEFEL project UTO Uvrier case study

    The waste incineration plant UTO Uvrier is situated in the south western part of Switzerland. The Association which controls the plant was established in 1969 and treats waste from 44 municipalities with a combined population of 170,000 inhabitants. The principal task of UTO Uvrier is the thermal heat recovery from urban and industrial waste. Apart from this, UTO also treats other types of waste ...


    By Jakob Stiefel GmbH

  • Cementing the PC MACT

    On September 9, 2010, the U.S. EPA promulgated the final amendments to the National Emissions Standard for Hazardous Air Pollutants from Portland Cement Manufacturing Industry (40 CFR 63 Subpart LLL), also known as the PC MACT. EPA’s self-proclaimed “historic” rulemaking includes some important implications for cement manufacturers and other sources that may be subject to ...


    By Trinity Consultants

  • Demonstrating advanced environmental management

    Everyone has high expectations when it comes to maintaining the environment. But for Castle Cement, just meeting those expectations wasn't enough. Managing stakeholder expectations is a major challenge for those implementing environmental management systems (EMS). Increased demands for transparency are driving process-based management systems and the rise in public reporting of environmental ...


  • Xenemetrix EX-3600M (EDXRF) spectrometer analysis of the major elements in cement and compliance with ASTM Method C-114

    Energy Dispersive X-ray Fluorescence (EDXRF) can play a vital role in this industry by giving accurate analytical results in a short time.  ASTM C-114 is the test method used for the analysis of hydraulic cements. .  The overview of Xenemetrix EX-3600M (EDXRF) spectrometer analysis of the major elements in cement and compliance with ASTM Method C-114 will be described in this ...


    By Xenemetrix Ltd.

  • Aluminum Manufacturing Industry - Pollution Prevention Guideline

    Introduction Pollution Prevention Guidelines to provide technical advice and guidance to staff and consultants involved in pollution-related projects. The guidelines represent state-of-the-art thinking on how to reduce pollution emissions from the production process. In many cases, the guidelines provide numerical targets for reducing pollution, as well as maximum ...


    By The World Bank

  • Control VOC`s in Refinery Wastewater

    Oil and water do not mix, like many of life’s one-liners this statement is basically true but not the whole story. Many hydrocarbon liquids, particularly aromatics, have significant solubilities in water: Benzene 1800 PPMVToluene 470Ethyl Benzene 150Xylenes 150 Petroleum refineries do not like salts in their feedstock since these corrode and foul process equipment. The first refining step is ...

  • Iron Ore Pelletizing Plants - Case Study

    Changing the iron ore processing chain The iron ore being mined globally can approximately be divided equally into boulders and fines. For further processing boulders have to be sized to 10-30 mm for blast furnaces and 6-18 mm for sponge iron plants. Iron ore in a finely ground state is not easily transported or readily processed .The iron ore pelletizing process agglomerates the fine ...

  • Calcium Carbonate, a solution to the energy crisis!

    A 'chemical' solution exists to solve jointly the energy crisis and CO2 release. Thanks to the Lime, “Cycle C4” could produce liquid fuels (petrol, diesel, etc.) with no CO2 release. The cycle presents no technological uncertainty, each step is widely known and controlled. Profitable with a barrel quote at 100 dollars. In 2004, the International Energy Agency annual report predicted that oil ...


    By Itgium

  • Tri-NOx Multi-Chem Wet Scrubber. Case Study of Our NOx Scrubber in a Plastics Resin Plant.

    As part of a commitment to reduce airborne emissions – or even the threat of such emissions – the Mt. Vernon, IN plant of GE Plastics has installed a NOx scrubber. When such GE Plastics products as Ultem resins are produced, nitric acid is used, and emissions from this step are tightly controlled. But to address upset conditions, the company opted to install an emergency scrubber that can treat ...


    By Tri-Mer Corporation

  • Holcim: SRF production with UNTHA shredders in Vietnam

    Work is underway to commission a Solid Recovered Fuel (SRF) manufacturing plant in Vietnam, for one of the world’s leading cement and aggregates specialists, Holcim. The plant will process solid footwear production waste from the country’s main shoe factory, to create a fossil fuel substitute that will power Holcim’s local cement kiln calciner. Following a global ...


    By UNTHA Shredding Technology

  • Breweries Industry - Pollution Prevention Guidelines

    Introduction Pollution Prevention Guidelines to provide technical advice and guidance to staff and consultants involved in pollution-related projects. The guidelines represent state-of-the-art thinking on how to reduce pollution emissions from the production process. In many cases, the guidelines provide numerical targets for reducing pollution, as well as maximum emissions levels that are ...


    By The World Bank

  • Recovering Valuable Chemicals from Air Emissions

    Air emissions in many cases are a waste of valuable natural resources that should have become useful chemicals. In some cases the economic payback from recycling/reuse of air emissions can be almost as much a motivation to control air pollution as government regulations. Examples of recycling and reuse of air emissions are sulfur oxides emissions that can be made into sulfuric acid, cement ...


  • Waste not, want not: Efficiency is the name of the game for Ohio millwork company

    If the nation’s power grid ever goes down, chances are good that Baird Brothers Sawmill, Canfield, Ohio, wouldn’t miss a beat. That’s because the custom and stock millwork company uses natural resources and recycling for its power and heat ...


  • EPA isues GHG BACT guidance

    Beginning in 2011, major sources of greenhouse gas (GHG) emissions that trigger Prevention of Significant Deterioration (PSD) permitting must implement Best Available Control Technology (BACT) for GHG emissions from new and modified sources. EPA has issued a variety of guidance in an attempt to clarify the BACT determination process for GHG emissions from common stationary sources:1 EPA’s ...


    By Trinity Consultants

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