coal fly ash used in cement yahoo answers

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    Cement Manufacturing Process Phases Flow Chart. Aug 30 2012 · This saves the extra fuel cost and makes cement somehow economical Raw materials are extracted from the quarry and by means of conveyor belt material is transported to the cement plant There are also various other raw materials used for cement manufacturing For example shale fly ash mill scale and bauxite

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    Mar 26 2011 · huge carbon footprint from coal. mining storing of coal and disposal of fly ash from coal burning plants is a major concern. if the rules used to control pollution from nuc plants was applied to coal we wouldn t be allowed to use coal at all. fast breeder reactors would virtually eliminate uranium mining. i m betting on nuclear power for the 21st century. nothing

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  • fly ash brick manufacturing units in Yahoo Answers

    Mar 20 2007 · NTPC has also been providing ash from its thermal power stations to different industries for manufacture of cellular concrete and portland pozzolana cement. It is working in close association with FAM in several technology demonstration projects. AEC have recently appointed a consultant for evolving an "Integrated Fly Ash management system".

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  • how to make cement mill empty weightConsultax

    Cement Manufacturing Process Phases Flow Chart. Aug 30 2012 · This saves the extra fuel cost and makes cement somehow economical Raw materials are extracted from the quarry and by means of conveyor belt material is transported to the cement plant There are also various other raw materials used for cement manufacturing For example shale fly ash mill scale and bauxite

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  • how much does one cubic yard of concrete Yahoo Answers

    Mar 14 2006 · Air entrainment water to cement ratio coarse stone and fine aggregate cement content admixture content fly ash substitution all contribute to the variation in weight. I do agree that 150 lbs per cubic foot is a recognized average when calculating concrete weight. since there is 27 cubic feet in a cubic yard (150 lbs x 27 cubic feet) one

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    It is used in making Portland cement to make concrete. It is used in making steel and glass toothpaste plastics paint tiles and even bread and cereals. Limestone is used as

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  • How is cement concrete and glass made.. Yahoo Answers

    Dec 25 2009 · Some of the second raw materials used are clay shale sand iron ore bauxite fly ash and slag. When a cement kiln is fired by coal the ash of the coal acts as a secondary raw material. 1930s vibrated concrete manufactured in Croydon and installed by the LMS railway after an Art Deco refurbishment in Meols United Kingdom.

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  • coal fly ash used in cement Yahoo Answers

    Nov 18 2007 · Portland Flyash Cement contains up to 30 fly ash. The flyash is pozzolanic so that ultimate strength is maintained. Because flyash addition allows a lower concrete water content early strength can also be maintained. Where good quality cheap flyash is available this can be an economic alternative to ordinary Portland cement.

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    The Beyond Coal Campaign is part of Sierra Club s efforts to not only protect every person s right to the outdoors but also to promote affordable clean energy that safeguards the health of our communities protects wildlife and preserves our remaining wild places. We re trying to close all the coal plants in the US and help communities and

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    Feb 01 2008 · Fly ash and volcanic ash are often mixed with portland cement and aggregate to make what is called Hydraulic Cement. It expand slightly and can be poured into the mold even if its under water. The romans invented it and it was how they made many of thier underwater footings for bridges and aquaducts.

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  • what is deposition of rocks Yahoo Answers

    Aug 12 2006 · Even volcanic ash can become sedimentary rock The only hard ones to remember are conglomerate and breccia. Conglomerates are made up of rounded gravel-size particles (To a geologist gravel is anything from 2mm to 4 meters in diameter) and breccia is made up of angular sharp-edged gravel-sized clasts.

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    Dec 06 2007 · The ratios you used are based on long tried and true methods but I would add paragraphs about deviating from the tried and true formulations and what the consequences would be for example if you used too much fine aggregate or not enough cement too much cement varying the water-cement ratio etc.

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    Nov 03 2020 · If the materials left over are properly recycled it helps reduce building costs as the ash leftover is used in cement. If we created a filter which could collect all the heavy metals and the sulfur dioxide we could decrease the cost of production for batteries. Nickel Cadmium Lithium and Sulfuric Acid are all used to make batteries.

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  • Why is fly ash not considered a hazardous Yahoo Answers

    Jan 30 2010 · That is the problem the storage before the release. If pig manure which is just like human for the most part was treated like human it would not be a problem. Same with fly ash. They allow it to be stored. But now lots of fly ash is used in other products now like concrete and similar items.

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  • Why cant we make compost from human poo Yahoo Answers

    Apr 23 2008 · after ones business is finished cover the fresh poop with leaves or /and ash this helps decomposition and also is the start of a mix as well as killing the smell. Another idea to take care of smell in these kind of toilets is a metal or plastic pipe that starts at the source of the smell and reaches well above the outhouse where the sun can

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  • What is fly ash and why is it used in cement

    Aug 23 2019 · One of the core ingredients of cement is fly ash. This is a byproduct from the burning of coal in power stations. Fly ash is a fine powder that is light grey in colour and is made up of tiny spherical particles. Fly ash also contains pozzolanic materials similar to volcanic ash that react with lime to form cement.

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    Nov 08 2012 · Yahoo AnswersSOCIAL Sep 20 2012 · Best Answer Social advantages / disadvantages of metalliferous mining cannot be entirely divorced from the economic effects of mining. Social advantages »More detailed

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  • Why cant we make compost from human poo Yahoo Answers

    Apr 23 2008 · after ones business is finished cover the fresh poop with leaves or /and ash this helps decomposition and also is the start of a mix as well as killing the smell. Another idea to take care of smell in these kind of toilets is a metal or plastic pipe that starts at the source of the smell and reaches well above the outhouse where the sun can

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  • Burning Fossil Fuels Yahoo Answers

    Feb 03 2008 · It is estimated that during 1982 US coal burning released 155 times as much radioactivity into the atmosphere as the Three Mile Island incident. Burning coal also generates large amounts of bottom ash and fly ash. These materials are used in a wide variety of applications utilizing for example about 40 of the US production.

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    Feb 28 2008 · I know for a fact that coal fueled power plants use electrostatic cleaners in the exhaust from their furnaces to capture as much as they can before that fly ash gets into the atmosphere. That fly ash is then collected and buried or washed into sediment ponds. So-o-o-o let s be fair #1 and tell the complete story for point #2. Now let s get

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    May 14 2013 · However fly ash can vary in quality depending on the mineral qualities of the coal it is produced from and it can also contain unburned carbon that can weaken the cement. Silica fume when mixed into cement produces a high strength chemically resistant cement. However it is expensive and not as available as fly ash.

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  • Are there any ethical issues related to Yahoo Answers UK

    Nov 11 2009 · Coal Ash (aka Fly Ash Bed Ash Bottom Ash) is sometimes used for road base or mixed in cement. Sometimes it can contain amounts of hazardous chemicals. 0 0. mosesqueenofegypt. 1 decade ago. Join Yahoo Answers and get 100 points today. Join. Trending questions.

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  • what is the effect of adding fly ash to Yahoo Answers UK

    May 10 2008 · Favourite answer Fly ash is a pozzolanic by product of coal fired power stations. Pozzolanic means that it hardens following reaction with water. It is commonly blended with portland cement (OPC)

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  • Pozzolan Addition Directly Into Cement Mill

    Re Pozzolan Addition Directly Into Cement Mill Page 2 Of 2. Home Forum Technical Cement Forum re Pozzolan addition directly into Cement Mill 537 posts Time Posted 30 04 2013 05 23 47 Ted Krapkat says re Pozzolan addition directly into Cement Mill Hello Shastri How hard is the pozzolan you are using What is the top size of the pre ground material from the roll press

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  • Are there any positive effects on ca.answers.yahoo

    Nov 03 2020 · If the materials left over are properly recycled it helps reduce building costs as the ash leftover is used in cement. If we created a filter which could collect all the heavy metals and the sulfur dioxide we could decrease the cost of production for batteries. Nickel Cadmium Lithium and Sulfuric Acid are all used to make batteries.

    Get Price
  • Why is fly ash not considered a hazardous Yahoo Answers

    Jan 30 2010 · That is the problem the storage before the release. If pig manure which is just like human for the most part was treated like human it would not be a problem. Same with fly ash. They allow it to be stored. But now lots of fly ash is used in other products now like concrete and similar items.

    Get Price
  • concrete mix Yahoo Answers

    Dec 06 2007 · The ratios you used are based on long tried and true methods but I would add paragraphs about deviating from the tried and true formulations and what the consequences would be for example if you used too much fine aggregate or not enough cement too much cement varying the water-cement ratio etc.

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  • How much heat can Cement take Yahoo Answers

    Dec 31 2014 · Normal concrete made with portland cement will not withstand these temperatures- it will crack and maybe even send shrapnel flying. You need to use a cement that is heat rated and has a high fly-ash content such as FIREROK.

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  • concrete mix Yahoo Answers

    Dec 06 2007 · The ratios you used are based on long tried and true methods but I would add paragraphs about deviating from the tried and true formulations and what the consequences would be for example if you used too much fine aggregate or not enough cement too much cement varying the water-cement ratio etc.

    Get Price
  • Where can I buy VOLCANIC ASH Yahoo Answers

    Sep 21 2010 · They use volcanic ash to add long term strength to cement (known as pozzolanic additives). A similar product is fly ash produced by coal burning power stations also used as a pozzolan. If you talk

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  • Where can I buy VOLCANIC ASH Yahoo Answers

    Sep 21 2010 · A similar product is fly ash produced by coal burning power stations also used as a pozzolan. If you talk to producers or bulk sellers of cement they might also market volcanic ash or fly ash. If you want it for study purposes (ie a few kilograms) you might even be able to sweet talk them into giving you some.

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    Nov 11 2007 · Burning coal also generates large amounts of bottom ash and fly ash. These materials are used in a wide variety of applications utilizing for example about 40 of the US production. 15 Harvesting processing and distributing

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    Yahoo Answers is a great knowledge-sharing platform where 100M topics are discussed. Everyone learns or shares information via question and answer.

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  • Are there any positive effects on ca.answers.yahoo

    Nov 03 2020 · If the materials left over are properly recycled it helps reduce building costs as the ash leftover is used in cement. If we created a filter which could collect all the heavy metals and the sulfur dioxide we could decrease the cost of production for batteries. Nickel Cadmium Lithium and Sulfuric Acid are all used to make batteries.

    Get Price
  • how much does one cubic yard of concrete Yahoo Answers

    Mar 14 2006 · Air entrainment water to cement ratio coarse stone and fine aggregate cement content admixture content fly ash substitution all contribute to the variation in weight. I do agree that 150 lbs per cubic foot is a recognized average when calculating concrete weight. since there is 27 cubic feet in a cubic yard (150 lbs x 27 cubic feet) one

    Get Price