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Displaying items by tag: Alternative Fuels

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India could learn from its game of ‘Hungry, hungry cement plants’

17 June 2015

This week brought the news that, following testing by the Food Safety and Standards Authority of India (FSSAI), some 27,402t or US$49.8m of Nestlé's Maggi noodles had to be recalled from the market due to allegedly high levels of lead. But what do you do with 27,402t of noodles deemed unsafe for human consumption?

The solution was incineration. Five cement plants will take 40 days, which started on 9 June 2015, to consume all of the noodles as an alternative fuel. "This was the most environment-friendly solution to destroy the recalled noodles," said Luca Fichera, executive vice president of Nestlé's supply chain in India.

India's fuel supply is notoriously unreliable. Coal is the dominant fuel used for cement and power production in India, however, supplies have been inconstant in terms of both quality and quantity for some time now. To shore up the coal supply, the government cancelled, reallocated and auctioned 214 of the 218 coal blocks in India, starting in September 2014. According to local media, Coal India, which still operates most of the blocks, is now expected to increase its coal production capacity by as much as 60Mt in 2015, following 7% production growth in the 2014 - 2015 financial year. However, there is still a major coal shortage in the country and recent reports by India's coal ministry suggest that the new coal linkages will increase coal costs. The new coal linkage process will see sales go via an auction system instead of a static price. Coal costs for cement producers are expected to rise by as much as 25% as a result.

Given India's long-standing fuel supply problems, its cement producers may wish to learn from the use of Nestlé's Maggi noodles as alternative fuels in cement plants. Instead of viewing the coal shortage as a challenge, it might instead be considered an opportunity to increase alternative fuel use, reducing costs and moving to more environmentally-friendly cement production. In addition to the standard industrial, municipal and household waste, among others, India might look to use some of the large quantities of waste biomass that must surely be produced from its agricultural sector. Like the game, 'Hungry, hungry hippos,' India's cement plants could consume a wide variety of nearby wastes in place of coal.

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Lafarge tackles hurdles to refuse-derived fuels production in Egypt

03 June 2015

Encouraging news from Egypt with the announcement that Lafarge Ecocem has taken on two refuse-derived fuels (RDF) contracts in Suez and Qalyubeya. The RDF plants will have production capacities of 42,000t/yr and 280,000t/yr respectively, after upgrades are built.

The move follows a deal Lafarge struck with Orascom in March 2015 to develop a waste management framework of municipal and agricultural waste. The plan is to achieve an average fuel substitution rate of 25% by the end of 2015. Around the same time Ecocem also signed a cooperation agreement with the German Development Cooperation (GIZ) and the Qalyubeya Governorate to upgrade a recycling plant in Qalyubeya to produce RDF. Part of the deal was intended to reinvest some of the revenue from RDF sales back into the region's waste collection infrastructure.

These production levels compare to SITA UK's new RDF plants in the UK, which has a more mature RDF market. There, the newly opened Malpass Farm plant is planned to produce 200,000t/yr and the Tilbury plant will have an output capacity of 500,000t/yr when it opens. However, the Malpass Farm plant mainly feeds one cement plant, the 1.3Mt/yr Cemex Rugby plant with a mean substitution rate of 61% in 2013. By contrast, Lafarge Cement Egypt runs the massive 10.6Mt/yr El Sokhna plant.

Co-processing at El Sokhna by Lafarge is of particular interest given the links with Egypt's unofficial household waste collectors, the Zabbaleen. Lafarge Egypt recruited and trained 140 Zabbaleen to gather waste material for RDF production. The strategy enabled Lafarge to gather continuous supplies of RDF and strengthen local stakeholder relations, as Lafarge's 2013 sustainability report puts it. Lafarge Egypt's substitution rate was 2.2% in 2012 with significant improvements made since then. The current target of 25% for the end of 2015 shows how much progress Lafarge has made.

Hisham Sherif of the Egyptian Company for Solid Waste Recycling (Ecaru) placed Egypt's municipal solid waste level at 20Mt/yr at a presentation given at the Global CemFuels Conference earlier in 2015. From this 4Mt/yr of RDF could be produced. Together with biomass derived fuel (BDF) Sherif reckoned that the country's cement plants could reach substitution rates of 30 – 40%. Problems though with increasing RDF rates in Egypt include legal complexities, institutional issues, poor services and monitoring and centralised planning with little regard for the country's unofficial waste pickers, such as the Zabaleen.

Lafarge Ecocem appears to be tackling each of these problems in turn as the deals with Orascom and the Qalyubeya Governorate show. However, spare a thought for Egypt's unofficial waste sector workers who are likely to lose their livelihoods as waste management becomes more formalised and personnel rates per tonne of waste collected tumble.

For more information on the Zabaleen, check out the documentary made about them in 2009, called 'Garbage Dreams'.

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Co-processing cashews

13 May 2015

At the 24th AFCM Technical Symposium in April 2015, Nguyen Quoc Thang, plant manager at Vicem's Binh Phuoc cement plant, delivered an outstanding presentation. He explained the sourcing and processing methods for using cashew nut shells as an alternative fuel to replace coal at the plant.

Around 300,000t/yr of cashews are grown and harvested in the south-east of Vietnam, the equivalent of about 130,000t/yr of cashew nut shell, 85% of which remains after processing. According to Nguyen Quoc Thang, the plant uses cashew nut shells to replace 35% of its fuel and has significantly reduced its CO2 emissions and fuel costs by doing so.

Cashew nuts are grown in large quantities in Brazil, India, Nigeria, Vietnam, the Ivory Coast, Pakistan and Indonesia, among others. In 2012, some 4.15Mt of cashew nuts were grown. Cashew nut demand has risen greatly in both the long-term and the more recent past. New (and delicious) products are being designed to meet the demands of health-conscious people and vegans, including cashew nut butters, cashew milks, cashew cream, cashew ice cream, cashew cheese and cashew cooking sauces. All at premium prices, of course, and all driving cashew nut demand ever-higher.

Cashew nuts are always sold pre-shelled, as the shell is toxic if consumed. Their growing production volumes and the necessity that they always be pre-shelled for sale or further processing makes cashew nuts an ideal alternative fuel for cement production, with reliable supplies guaranteed for the foreseeable future, subject to good crop yields. Moreover, cashew nuts are mainly grown in regions that currently have low cement plant alternative fuel substitution rates, providing an instant solution to some of the cement industry's environmental challenges.

Cement producers in cashew nut-growing (and other types of nut) countries would do well to note the example that Vicem's Binh Phuoc cement plant has presented. In addition to saving costs and tackling environmental restrictions, the highly-profitable nut industries could provide extra economic value to their home countries through partnership with local cement plants.

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Did LafargeHolcim overprice its sale to CRH?

25 February 2015

One of the compelling issues to emerge from the Global CemFuels conference last week in Dubai was how alternative fuel (AF) use by cement producers might change while oil prices are low. Dirk Lechtenberg, of MVW Lechtenberg hinged his overview talk on both low energy prices and the on-going Lafarge-Holcim merger. The unspoken implication was that Holcim and Lafarge are offloading cement plants that use increasingly unprofitable AF. Cement plants are increasingly being out-bid for AF by energy-from-waste plants and 'gate fees' are dwindling accordingly.

Here's how it works. CRH is buying nine plants from Lafarge and Holcim in western Europe and five in eastern Europe. These are plants with high AF substitution rates. For example, Holcim's plants in France and Belgium have a substitution rate of 50% using around 250,000t/yr of waste fuels. Similarly, the Lafarge Zement Wössingen cement plant has permits for a 60% AF rate.

Globally, Lafarge and Holcim had substitution rates of 17.2% and 12.8% in 2013. CRH had a substitution rate of 21.2% in the same year. Post merger LafargeHolcim is estimated to have a substitution rate of below 10% in 2015. Meanwhile CRH is estimated to have a rate over 30%. After establishing this, Lechtenberg demonstrated how a thermal substitution model might be affected by fluctuating coal prices whilst using a refuse-derived fuels (RDF) rate of 35%. Put the price of coal below US$55/t and the savings of using RDF vanish.

Other delegates at the conference pointed out various limitations in Lechtenberg's methodology and figures. External legislation such as a carbon tax can disrupt this model for example. However, once coal becomes cheap and abundant enough it will displace most AF on economic grounds due to its high calorific value. Very few waste fuels can beat it.

At the time of writing the Brent crude oil price is just below US$60/barrel following a steep decline since mid-2014. The Australian coal price, the world's biggest export hub, has seen a steady fall since 2011 hitting just over US$60/t in January 2015. However, how interconnected are the oil and coal price?

This is difficult to link because bulk energy consumers switch supply according to price and other variables such as which fuels they can actually use. That last point is important in this discussion because preparing a cement plant to use AF requires an investment cost. Meanwhile, energy producers vary production depending on how much profit they want to make. Throw in new energy sources such as waste fuels and fracking and the overall picture becomes messy as all of these factors and others (OPEC policy, legislation etc) interact. Low oil prices do not necessarily mean low coal prices. For example, one analyst looking at BP's Statistical Review of World Energy in 2014 concluded that oil and coal consumption hold an inverse relationship to each other. When the proportion used of one rises, the proportion used of the other falls, and vice versa.

With all of this in mind there is ambiguity over whether CRH has been handed a time bomb in terms of its new cement plants' energy policies. Given that widely assumed production costs for the major oil producing nations are mostly above the current cost of crude oil, if the producers are controlling the price, then it seems likely that the price can't stay this low on a sustained basis. However, the cost of coal is on a five year low also. Is this the new normal or a market blip?

Cement plants using AF have a capital expenditure cushion against changing their fuels mix in the short to medium term but it can only last so long. The longer fossil fuel energy prices remain low the longer CRH will make less money from the fuel strategy it will inherit at its new plants.

Comment on this article here

Read the review of the 9th Global CemFuels Conference 2015

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Changing the fuels mix in North America

26 March 2014

Three news stories this week cover the gamut of fuels used by the cement industry in North America.

First we had an example of the changing trends in fossil fuel usage when TruStar Energy announced a deal to supply compressed gas to Argos USA. Then we moved to an example of recycled fuels used in co-processing when chemical waste firm ChemCare trumpeted its 100 million gallon milestone (that's 379,000m3 to the rest of the world) in supplying fuel-quality waste to the Lafarge co-processing subsidiary Systech Environmental. Finally, Cemex rounded off the main fuels groups with renewables, when it released pans to build a US$600m wind farm project in north-east Mexico.

Obviously fossil fuels still dominate in kilns north of the Darian Gap, as they do almost everywhere else, and fuel buyers wouldn't be doing their job properly if they weren't searching for the next best deal. Yet the range here shows a dynamic industry.

Jan Theulen from HeidelbergCement pointed out one example in the US at the recent Global CemFuels Conference held in Vienna. Here, rising landfill prices are increasing opportunities for alternative fuels use alongside changing US Environmental Protection Agency (EPA) permitting for solid recovered fuel. Alternative fuels consultant Dirk Lechtenberg, in an interview with Global Cement Magazine in February 2014, singled out the US as one country that is developing its alternative fuels use. As he explained, "Even though the fossil fuel prices are quite low in the US, the industry is developing supply chains for alternative fuels to be more independent with their fuels sourcing."

This race between cheaper fossil fuels in the US (via shale gas) and increasing development in alternative fuels is fascinating. Specifically: why is it happening now? Gas prices have fallen and demand for cement is returning in the US. The annual mean Henry Hub natural gas spot price in the US fell from US$8.86/million BTU in 2008 to a low of US$2.75/million BTU in 2012. This compares to up to US$15/million BTU in Japan and US$9/million BTU in Europe.

Public environmental pressure made manifest by the policies of the EPA and general increased knowledge about co-processing may be factors for the surge in alternative fuels investment. Long lead times for alternative fuels schemes may be another. Planners making a decision about what fuels mix to pursue in 2008 at the start of the recession might well have bet on alternatives to spread their risk. Yet the cause could be something else, as shale gas takes over higher paying industries, such as electrical generation, and the cement industry continues to be priced out of the leftovers.

Ultimately what burns in a cement kiln comes down to price. Depending on how the shale gas market plays out in North America it would be ironic if 'frackers', the bogeymen of current environmentalists, inadvertently cleaned up the cement industry.

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Losing energy in Egypt

05 June 2013

ASEC Cement CEO Giorgio Bodo has cited security, fuel scarcity and general instability as the challenges facing cement producers in Egypt.

The comments came with the announcement that ASEC Minya had started clinker production at its 2Mt/yr Minya plant. In the news report ASEC congratulated itself on reaching clinker production within 28 months. Construction originally began in December 2010, just before the Egyptian Revolution of early 2011 occurred.

Bodo's comments will come as no surprise to delegates of the recent Global CemTrader conference which took place on 23 – 24 May 2013 in London, UK. In his presentation on current political unrest in the Arab countries and the implications for the cement industry, Bodo outlined seismic changes to the Egyptian cement market. As per his comments with the Minya announcement, challenges included the loss of fuel subsidies, fuel shortages, oversupply of cement and a decline in export prices. However, the overall picture was a mixed one. Bodo expected growth to be driven by growing political stability, increased government and private-sector spending, new development projects coming on-line, new export opportunities and other reasons.

Meanwhile, battles over the energy costs and supply in Egypt became public this week when Jose Maria Magrina, the CEO of Arabian Cement Company (ACC) implored the government to help cement producers move away from using natural gas, by removing operating licenses and speeding up the granting of environmental permits. Around the same time a member of the Federation of Egyptian Industries revealed that the government plans to increase the price of natural gas by over 75% for cement producers by 2016. Eventually the cement industry will be expected to source its energy needs independently.

Misr Cement announced in May 2013 that it too was preparing to use coal following a 14-hour shutdown of its kilns due to a shortage of mazot (heavy duty fuel oil). Figures with the ACC release stated that energy shortages have caused the cement industry in Egypt an effective loss of 20% (3.7Mt) of its production capacity since February 2013, with a 25% loss for ACC (350,000t). Suez Cement has also confirmed that it too has cut production by 20 - 30% so far in 2013. ¬

Unsurprisingly in this situation the alternative fuels sector has shown considerable interest in Egypt as Dirk Lechtenberg, MVW Lechtenberg & Partner, reports in the June 2013 issue of Global Cement Magazine [LINK]. Agricultural waste such as rice straw has shown potential as an alternative fuel for cement kilns. Refuse-derived fuels present a harder challenge given competition from the informal economy scavenging through rubbish tips.

Despite the many problems facing local cement producers, Egypt's compound annual growth rate in expected to be 3% for the next five years. In addition it was recently announced by the Minister of investments that Brazilian investors intend to invest US$2bn into the local cement sector.

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Cemex shows the alternative way in Germany

15 May 2013

Congratulations to Cemex for their work on alternative fuels in Germany. In April 2013 Cemex reached an alternative fuels substitution rate of over 80% at its German cement plants, with the Kollenbach plant beating 90%. Impressive stuff.

The German cement industry as a whole is already one of the leaders in the industry for alternative fuels use, reaching levels above 60% in 2010. This compares favourably with, for example, the UK's (high) rate of 40% in 2011 and the Cembureau average rate of 28% for its 27 European member states in 2009.

To show how fast the change in alternative fuels usage has been in Germany, in 2000 the rate was around 25%. For Cembureau members it was about 10.5% in 2000. Cemex's achievement at Kollenbach even surpasses HeidelbergCement's alternative fuels rate of 85% that it achieved across the border in 2011, at its Eerste Nederlandse Cement Industrie (ENCI) plant in the Netherlands.

Globally, Cemex seems likely to meet its 2015 target of 35% alternative fuels substitution rate. The other large multinational cement producers have similar plans in place. For example, Lafarge intends to reach 50% usage by 2020.

For more information on the German cement industry, read our feature 'Germany: A modern force in cement' in the May 2013 issue of Global Cement Magazine.

This week we present the 100th issue of Global Cement Weekly, Global Cement's weekly cement industry news digest. To mark the occasion we would like to know what you think about what we are doing. Let us know by taking the Global Cement Reader Survey 2013. All completed submissions will be entered in a draw to win an iPad Mini.

Take the Global Cement Reader Survey 2013

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Power to the plants

23 May 2012

Two stories this week on alternative fuels illustrate their current place in the cement industry succinctly. Sumitomo Osaka Cement in Japan plans to increase the sales of power generated in-house at its Tochigi Prefecture plant using wood biomass fuel. Meanwhile on the other side of the Pacific Cemex US is planning to cut costs and carbon emissions by installing wind turbines at its Victorville site in California.

At the recent Global CemTrader conference on supplementary cementitious materials (SCMs), coal and petcoke and logistics for the global cement industry, Patrick Peenaert of Lafarge delivered a presentation entitled the 'Global Overview of Worldwide Coal & Petcoke.'

In his talk Peenaert revealed, unsurprisingly, that fossil fuels dominate the global cement industry for the energy consumption of the top four international producers, with coal and petcoke making up over 70% of usage. However, alternative fuel usage has grown from 13% in 2008 to 18% in 2011. As price pressures on fossil fuels grow from other industries so too will investment into alternative fuel options.

The Japanese story demonstrates this well, especially given that the economic fallout of the 2011 earthquake on the Japanese power industry has made an alternative fuel process considerably more valuable for a plant with a temporary closed kiln. By contrast the US story is more nonchalant: operations will proceed at the Californian plant regardless of whether the turbines are built or not.

Yet hedging one's bets with power sources is increasingly seen to be a prudent long term strategy in an uncertain world. A familiar refrain in the recent batch of cement producer financial reports has been mounting energy costs. This week's half-year results for the Pretoria Portland Cement in the bullish African market is no exception.

Watch the video of Patrick Peenaert's presentation at the Global CemTrader 2012 conference, and all the other presentations

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