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Radioactivity Assessment In Cement Manufacturing

Process flow diagram for the cement manufacturing process, showing energy and heat consumption or inputs, as well as gaseous and particulate emissions (adapted from Ref. [31]). Note that emissions at the preheating and kiln stages include both fugitive emissions and cement kiln dust or those particulates captured with controlled devices.

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RADIOACTIVITY CONCENTRATION AND DOSE ASSESSMENT OF

Keywords: Radioactivity, radiation, radiological parameters, cement factory, soil Cite this Article: Usikalu Mojisola R, Oderinde Ajibola, Adagunodo Theophilus A and Akinpelu A, Radioactivity Concentration and Dose Assessment of Soil Samples in Cement Factory and Environs in

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(PDF) Assessment of natural radioactivity in

Assessment of natural radioactivity in cements used as building materials in Turkey. ... nation at all stages of the production process [2]. The. ... Environmental impact of some cement manufacturing.

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Assessment of Radioactivity and the Exposure Doses from ...

initial raw materials from which the cement is processed. The knowledge of radioactivity in building materials, cement in particular, and the associated radiation doses due to inhalation are of paramount importance for assessment of radiological hazards to human health. Radioactivity levels in

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Assessment of radioactivity and trace elements of

03-04-2017  Trace elements present in cement pose an additional health risk not only to workers but also to the surrounding atmosphere. In the present work, radioactivity concentrations and elemental analysis of cement from 9 production sites in Saudi Arabia were performed using gamma-ray spectroscopy and inductively coupled plasma mass spectrometer.

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(PDF) Radioactivity level measurement of some

Journal of Kerbala University , Vol. 7 No.2 Scientific . 2009 Radioactivity level measurement of some cement samples ‫قياس مستوى االشعاع في بعض نماذج االسمنت‬ *Basim Abd Al-Hassen Al-Mayahi *Dhia Amin Al Joher **Muthana Hassan Hadi **Raad Jalyl Ahmed *Dept. Environmental - Faculty of Science - Kufa University **Dept. Internal- Kufa University Abstract The ...

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Natural radioactivity and human exposure by raw

01-09-2010  During the manufacturing process in the cement industry, raw materials of different levels of natural radioactivity are utilized. In this study we present the radiological impact of cements as a building material and the different raw materials used in their manufacture.

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Assessment of CO2 capture technologies in cement ...

01-09-2012  Highlights Integration of 3 CO 2 capture technologies with a cement making process was studied. Chemical looping has lower energy consumption than amine scrubbing. Energy recovery in chemical looping is 11.5 times higher than amine scrubbing. Amine scrubbing has the highest CO 2 abatement effect. Oxy-combustion cement making is the least energy intensive concept.

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Assessment of Natural Radioactivity and Estimation of ...

Assessment of Natural Radioactivity and ... Cement manufacturing may cause environmental contamination at all stages of the production process. The cement as the building material contains ...

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Assessment of radioactivity and trace elements

In the present work, radioactivity concentrations and elemental analysis of cement from 9 production sites in Saudi Arabia were performed using gamma-ray spectroscopy and inductively coupled ...

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Assessment of Natural Radioactivity Levels of

The radiological parameters in cement samples were calculated as follows: mean radium equivalent activity Raeq = 67.87 Bqkg−1, gamma index Iγ = 0.256, alpha index Iα = 0.067, the absorbed gamma dose rate D = 60.76 nGyh−1, external hazard index Hex =

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Assessment of Natural Radioactivity Levels of

The natural radioactivity was measured in eight types of cements produced in Slovak cement plants and in five types of composites made from the cement type of CEM I, which is also included in study. The number of samples analysed was at least four samples for each cement type and cement composite.

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Risk Assessment in Cement Manufacturing

The Cement manufacturing process mainly can be divided in to ten stages. From limestone loading to dispatching of cement various hazards takes place which causes harm. The purpose of this project to minimize the risk by using Risk assessment techniques and methods and provide safety control measures, health and safety environment built up and healthy environment create beneficial for

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Natural radioactivity in refractory

01-07-2009  The assessment of ionising radiation exposure of a ‘standard worker’ was performed in three steps: 1) analysis of questionnaires completed by the ‘Health and Safety Manager’ of each plant; 2) preliminary site visits; 3) survey measurements.

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Environmental assessment of different cement

01-09-2016  To assess which manufacturing process is more sustainable at the lowest level of CO 2 emissions, the environmental impact of four different cement manufacturing scenarios was considered: business as usual BAU, Scenario 1 – energy efficient kiln process, Scenario 2–30% of thermal energy produced by alternative fuel, and Scenario 3 – energy efficient kiln process together with 30% of

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A life-cycle assessment of Portland cement

01-05-2009  In this paper LCA is used to evaluate the environmental impact of four cement manufacturing processes: (1) the production of traditional Portland cement, (2) blended cement (natural pozzolans), (3) cement where 100% of waste cement kiln dust is recycled into the kiln process, and (4) Portland cement produced when cement kiln dust (CKD) is used to sequester a portion of the process

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Cement: Materials and manufacturing process

Next the material is burned in a large rotary kiln at 1500° C. Heating starts the de-carbonation where CO2 is driven from the limestone. The partially fused resulting is known as clinker. A modern kiln can produce around 6000 tons of clinker a day. CaCO3 (limestone) + heat -> CaO (lime) + CO2.

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Assessment of CO2 capture technologies in

01-09-2012  Post-combustion CO 2 capture in the cement making process involves the separation of CO 2 from the cement kiln flue gas. Several studies, trials and theoretical assessments about the potential application of CCS measures in the cement industry have been carried out ( IEA GHG, 2008 ; ECRA, 2009 ; Nakanishi, 2009 ; Puyvelde, 2009 ; CSI, 2009 ; Sarlis and Shaw, 2008 ; Bosoaga et al.,

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Alpha radioactivity in Indian cement samples

In fact, radioactivity can be in the air we breathe, the soil on which we walk the dwellings in which we live and even within our bodies (1). The present study deals with radon exhalation in Portland cement in which radon gas with a half life of 3.8 days is emanated in air as a product of 238 U that occur as a trace element almost in all the

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Environmental Guidelines for Cement Manufacturing

cement. The process results in a variety of wastes, including dust, which is captured and recycled to the process. The process is very energy-intensive and there are strong incentives for energy conservation. Gases from clinker cooler are used as secondary combustion air. The dry process, using preheaters and precalciners, is both economically and

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Health and safety in the cement industry

Cement is one of the most widely used substances on earth. Making cement is an energy and resource intensive process with both local and global environmental, health and safety impacts. Recognizing these facts, several cement companies, initiated the Cement Sustainability Initiative (CSI) as a member-sponsored program of the World Business Council

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Portland Cement Dust - HSE

This hazard assessment updates the health effects sections of an earlier HSE review of Portland cement (HSE 1994). The latter is taken to represent an accurate assessment of the literature available up to 1991. This assessment concentrates on the evidence for

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CEMENT PRODUCTION AND QUALITY CONTROL A. Cement ...

The whole process of cement manufacturing in Messebo Cement plant which consists of two separate Cement Production lines can be summarized into the following processes ;as can be seen in the process and Quality flow diagram below; 1. Quarrying and Crushing 2. Raw material Storage and Transportation 3. Proportioning 4.

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A Risk Assessment Study on Occupational Hazards in Cement ...

occupational hazards. In Cement industry the major sources of emission are: 1. Raw material handling: Total Dust or Suspended Particulate Matter. 2. Raw Mill Section: Total Dust or Suspended Particulate Matter. 3. Cement Grinding Unit: Total Dust or Suspended Particulate Matter. All precautions would be taken to avoid foreseeable accident

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EIA study, EMP and Environment Clearance Process for ...

20-12-2017  Sources of solid waste in cement manufacturing include clinker production waste, mainly composed of spoil rocks, which are removed from the raw materials during the raw meal preparation.Another potential waste stream involves the kiln dust removed from the bypass flow and the stack, if it is not recycled in the process.Filtrate from the filter presses used in the semi-wet process

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Fire and Explosion Hazards in Cement

Cement manufacturing is a very energy intensive process. As such, on-site power plants are increasingly being used to meet energy demands of the cement plant. Some of the fire hazards associated with on-site power plants include fire in power house buildings due to ignition of lube oil.

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Safety in cement plant - SlideShare

20-06-2015  Safety- Hazards In all the cement production processes there are hazards that can be classed in: o Safe behaviour o Environment, Work and Passage Areas • Routine and general hazards such as: o Safety labelling o Personal Protective Equipment (PPE) • Special hazards during the cement production phases such as: o Quarrying o Crushing o Clinker production o Milling processes at raw mill, cement

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Which method of manufacturing cement is

Apr 10, 2014 ... become self-sufficient in cement production, with domestic production exceeding the country's need, ... Cement production value chain involves five basic processes; ... Benue Cement Co (Dangote Cement Co) ..... Dry process should replace wet process. Wet process requires about 56 – 66% more energy. More details » Get Price

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Alpha radioactivity in Indian cement samples

Ira n. J. R a d ia t. R es., 2 0 0 6 ; 3 (4 ): 1 7 1 -11 7 6 Alpha radioactivity in Indian cement samples M.Nain 1 *,R.P.Chauhan 2,S.K.Chakarvarti 3 1 Department of Physics, Govt. P.G. College, Karnal, Haryana, India 132001 2 Departments of Physics, Indira Gandhi National College, Ladwa, Kurukshetra, India 136132 3 Department of Applied Physics, N.I.T. Deemed University, Kurukshetra, India 136119

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Environmental Guidelines for Cement Manufacturing

cement. The process results in a variety of wastes, including dust, which is captured and recycled to the process. The process is very energy-intensive and there are strong incentives for energy conservation. Gases from clinker cooler are used as secondary combustion air. The dry process, using preheaters and precalciners, is both economically and

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Workshop: “Environmental Impact Assessment(EIA) (for ...

Environmental Impact Assessment (EIA) (for Assessors) Emissions from cement manufacturing plant Relevant emissions from cementmanufacturing plantare: • -Nitrogen oxides(NOx) and other nitrogen compounds; • -Sulphur dioxide(SO2) and other sulphur compounds; •-Dust. Cement plant operationon air pollutionand abatement

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Sustainability assessment of Indonesian cement ...

Three cement production plants located in Western Indonesian are used as case studies where social impact and environmental impact are evaluated via life cycle assessment (LCA) model. This model is integrated with analytic hierarchy process (AHP), a multi-criteria decision analysis tool in selecting the most sustainable cement manufacturing plant.

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Radioactivity in building materials in Iraq

The dose rate varies depending upon the concentrations of the radionuclides 226 Ra (derived from 238 U), 232 Th, their progeny and 40 K, present in building materials, which in turn depends upon the geological origin of the rock or soil of which those building materials are composed, the manufacturing process and the addition of technically enhanced natural occurring radioactive material like fly ash,

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Portland Cement Dust - HSE

This hazard assessment updates the health effects sections of an earlier HSE review of Portland cement (HSE 1994). The latter is taken to represent an accurate assessment of the literature available up to 1991. This assessment concentrates on the evidence for

More

CEMENT PRODUCTION AND QUALITY CONTROL A. Cement ...

The whole process of cement manufacturing in Messebo Cement plant which consists of two separate Cement Production lines can be summarized into the following processes ;as can be seen in the process and Quality flow diagram below; 1. Quarrying and Crushing 2. Raw material Storage and Transportation 3. Proportioning 4.

More

Fire and Explosion Hazards in Cement

Cement Manufacturing Process. The cement manufacturing process typically involves quarrying, drying grinding, kiln burning cooling, finish grinding, and packaging. Each of these process steps are described in the following sections. Step #1: Quarrying. Querying involves the mining of limestone.

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Risk Assessment In Cement Manufacturing

Risk assessment of cement production process ijert Dec 04 2019183 lesliam suggested that in order to control the risk of cement production plant, our work operation should be safe and reliable without any interference. Risk assessment can be accessed at any time to provide security and benefit for future development. Our work should be safe and beneficial

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Which method of manufacturing cement is

Apr 10, 2014 ... become self-sufficient in cement production, with domestic production exceeding the country's need, ... Cement production value chain involves five basic processes; ... Benue Cement Co (Dangote Cement Co) ..... Dry process should replace wet process. Wet process requires about 56 – 66% more energy. More details » Get Price

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