cement kiln waste Articles

  • 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 ...


    By SatrindTech Srl

  • 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 ...

  • 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 ...


    By Inderscience Publishers

  • Municipal solid waste: alternative source of energy to the cement kilns in the state of Madhya Pradesh, India

    Rapid urbanisation has resulted in large–scale municipal solid waste (MSW) generation in India. Scientific and environment friendly disposal of MSW is a challenge for the municipal local bodies. A survey has been conducted regarding municipal solid waste generation from 342 local bodies in the State of Madhya Pradesh. Total generation of the MSW in the State is estimated around 4,500 MT/day ...


    By Inderscience Publishers

  • Comparative performance of cement kiln dust and activated carbon in removal of cadmium from aqueous solutions

    This study compared the performance of cement kiln dust (CKD) as industrial byproduct and commercially activated carbon (AC) as adsorbent derived from agricultural waste for the removal of cadmium (Cd2+) from aqueous solutions. CKD and AC were characterized by Fourier transform infrared (FTIR) and scanning electron microscopy (SEM) and surface areas demonstrate the differences of ...


    By IWA Publishing

  • 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. ...


    By Tana Oy

  • Waste incineration in cement plants: constraints and development opportunities (a French-German comparison)

    Is it possible to reconcile economic and ecological concerns? This article examines, through a French-German comparison, the case of obtaining a calorific value for wastes used as substitute fuels in cement kilns. On the one hand, this new strategy for obtaining needed inputs offers to the cement industry an economic opportunity for lowering production costs (the main determinant of ...


    By Inderscience Publishers

  • 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, ...


    By Inderscience Publishers

  • 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

  • Cement Manufacturing 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 ...


    By The World Bank

  • 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

  • `A Case Study in Implementation of the NESHAPs for the Portland Cement Industry at a Major Source,` appeared in Cement Americas magazine, July/August 2003

    Introduction Located at 40 CFR 63, Subpart LLL, the Portland Cement (PC) MACT standard poses a significant regulatory hurdle to the cement industry-Facilities subject to its requirements had to complete initial performance testing and develop their first substantial semi-annual monitoring report by January 31, 2003. The final Portland Cement MACT rule was promulgated on June 14, 1999, ...


    By Trinity Consultants

  • 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 ...

  • Defining solid waste

    Simultaneous to the publication of the final National Emission Standards for Hazardous Air Pollutants for Boilers (the Boiler NESHAP) and the Commercial and Industrial Solid Waste Incinerator (CISWI) Rules, EPA issued a new regulation that for the first time defines what materials are a non-hazardous solid waste when combusted. This rule, Solid Wastes Used as Fuels or Ingredients in Combustion ...


    By Trinity Consultants

  • Waste to Energy Analysis

    The manufacturing of SRF in a single pass is not a new concept. However, with the environmental efficacy of alternative fuel production under seemingly increasing scrutiny, a one-step process is of growing importance, believes Peter Streinik, Head of Business Unit Waste at UNTHA. There can be no disputing that alternative fuel production is being increasingly acknowledged as a valuable part of ...

  • Management of Hazardous Wastes

    ' Management of hazardous waste is a growing concern in many countries. The long-term impacts and costs of improper disposal can be very high and the emphasis must be on prevention. A comprehensive management system should include (i) policies, institutions and effective regulations and (ii) adequate and acceptable disposal facilities (either public or private). This note outlines the key ...


    By The World Bank

  • Use of process analyzers in cement plants solutions from Siemens – Case Study

    Cement is a hydraulic binding agent to produce concrete. Due in part to the fast growth of the Asian economies, world consumption of cement is currently growing at an annual rate of 8%. Therefore, cement production is expanding and, at the same time, production processes need to be optimized to ensure maximum efficiency. In this context, process analytics plays an important role: It determines ...

  • Permitting of Alternative Fuels and Raw Materials at Portland Cement Plants Post NSR Reform

    Introduction One of the ways that the portland cement industry is seeking eco-efficiency gains is in waste co-processing and energy/material recovery - using the waste and by-products of other industries as fuels and raw materials for cement manufacture.1 These wastes and by¬products of other industries, such as tires and plastics (fuels) or blast furnace slag and fly ...


    By Trinity Consultants

  • Study Charts a Future for Waste-Derived Fuels

    Pointers to possible future EU policy initiatives to give co-incineration facilities burning waste-derived fuels a strategic role in waste management have emerged in a study for the European Commission.1 The report suggests a policy focus on promoting source separation of municipal wastes, active discouragement of mass burn incinerators, and a levelling of the regulatory playing-field for ...

  • Waste co-incineration in the European Community, is the sky the limit?

    The co-combustion of waste in industrial furnaces -co-incineration- attracts considerable interest in the European Community, because of the combination of perceived business incentives, regulatory developments, and the slate of available technological options. It was found, however, that EU-regulation developed to ensure safe and environmentally acceptable processing of waste represents a clear ...

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