Coal Ash Asia Handbook 2018

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- Shuozhou City, Shanxi Province, China

The Asian Coal Ash Association proudly welcomes its members and following industry leaders to view our 2018 Coal Ash Asia Handbook. Coal Ash Asia is China’s premier coal ash handling, processing and utilization information exchange forum. China’s role in the coal ash industry is crucial, as it maintains the top spot for most coal consumed by a populous per year. We hosted our international event in Shuozhou City, China, and welcomed top researchers and commercial enterprises to share and explore leading research and technology. Our tracks included:

  1. Coal Ash Processing and High Value Utilization

  • Grinding, Classifying and Superfine grinding

  • Cement, Concrete, Wall Materials and Geopolymer

  • High Value Utilizations: Ceramics, Cenospheres, Fillers

  • Sulphoaluminate cement CalciumSulphoAluminate

      2. FGD Gypsum Utilization

  • Gypsum drying and Calcination

  • Construction Applications: gypsum block, board, mortar

  • Agricultural applications

  • High Strength Gypsum, etc

     3. Coal Gangue and Coal Chemical Residue

  • Processing and Utilization

     4. Metal Extraction

  • Alumina and other metal extraction best practices and methods

Please click below to download our 2018 Coal Ash Asia Handbook, with research from China’s top researchers in coal ash.

Want to join us in 2019? Register by clicking below!

Coal Ash Asia 2018: A Recap

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-Shuozhou City, Shanxi Province, China

A big thank you to everyone who participated in our Coal Ash Asia 2018 proceedings in Shuozhou City, China, this past September 12-15th. This year's topics focused on the high-value utilization of fly ash, FGD gypsum and coal gangue as well as highlight applications in building material products (cement, concrete, geopolymers etc).

A special thank you to our international delegation (click organisation to visit website):

We would like to extend our humble gratitude to our friends at the China Building Materials Academy’s Institute of Technical Information for the Building Materials Industry, in Beijing. This year’s extension and construction of our annual products and services exhibition was our largest in Coal Ash Asia history, with over 50 exhibitors, and a welcome ceremony which included an orchestra playing on instruments made primarily from fly ash!  

New to this year’s proceedings was our Technology Symposium track geared towards new technologies in fly ash, which included discussion on fly ash based aggregates, fillers, and ceramic tiles. Contributors to this track included: Prof. Chang Jiqing from Guangdong Penghu Industrial Co., Ltd., Zhang Jingjie from Shanxi Hujin Coal Electricity New Material Co., Ltd., Ma Liantao from Hengyuan Waste Utilization, and Peter Ma from Shandong Wei Tong Technology Co., Ltd.

Another new feature was our meeting dedicated to new FGD gypsum technologies. Content included alpha high strength gypsum and calcination methods. Contributors included: Prof. Duan Pengxuan from Guilin University of Technology, Prof. Xiang Lan from Tsinghua University, and Li Yushan from Shandong Pingyi Kaiyuan New Building Material Co., Ltd.

This year also welcomes esteemed contributor, Mr. Bill Martin, who led engaged attendees in his workshop, “Fly Ash Use in Road and Embankment Construction”. Here, Mr. Martin led the discussion for industry experts, who explained real-world projects of American and Australian fly-ash in road projects. Also discussed were new technology and applications in road engineering. Attendees were able to openly discuss and compare methods and approaches to road construction, and receive technical explanations as to the process of applying road and embankment technology from start to finish.

We are excited to announce upcoming events and association/research developments in the new year. Please sign up for our newsletter to stay in touch!

 Here are a few pictures from CAA2018! An Album will be available under past events, in the coming weeks.

Want to Download the Conference program from CAA2018? You can find it on our CAA introduction page.

Research Highlight: Acid Extraction of Valuable Resources in Fly Ash and Various Utilizations of Acid Slag

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- Beijing, China

Aluminium and rare earth mineral extraction was a well-explored topic at AsianCAA’s latest Coal Ash Asia event, in Beijing, last July.   Vice Professor Li Fang Fei, from JiLin University, shared her research pertaining to acid leaching in order to extract precious rare earth minerals. Jilin University is a key collaborator with the China Building Materials Academy (CBMA), and the Institute for Technical Information for the Building Materials Industry, our co-hosts of Coal Ash Asia. The university's chemistry department contributes essential research to the topic of waste utilization and management.  Below is Professor Li Fang Fei’s abstract, discussing her latest research.

Abstract: Fly ash is the main solid waste of power plants. After combustion, the aluminum, rare earth and other valuable resources in the raw coal are further enriched in the fly ash. That makes the high Al2O3 content in the fly ash of Inner Mongolia region (up to 50 wt % ). Aluminum, iron, gallium, and other rare earth resources in fly ash could be extracted by acid leaching process. And followed by resin separation, enrichment leaching, and crystallized purification process, various valuable resources could be successfully separated and purified to an ideal level. Such leaching method is not only applicable to the high-active CFB fly ash, but also suitable for the OF fly ash whose amount is much larger than the former. In addition, the amount of acid leaching slag of fly ash is very small, which is composed of porous SiO2 with ideal purity and highly reactivity. Such "white mud" could be produced as building materials, artificial zeolites, inorganic fibers, catalyst carriers, and other useful products, which promotes the governance and comprehensive utilization of fly ash.

Jilin University will be returning contributors to Coal Ash Asia 2018. For more information, or to register, please follow the links below. If you would like to be sent an information package regarding our event, please input your email below.

For more information on other papers from Professor Li Fang Fei, click below:

High Value-added Utilization of Coal-Related Solid Wastes

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Dr. Li Hui Quan, a researcher at Chongqing University recently presented at the recent Coal Ash Asia conference in Beijing, China from July 21-24, 2017. The following is the fully translated abstract of their research. For more information, or to contact this researcher please contact the team at Asian Coal Ash Association.

Thermal power generation is an important component of Chinese energy. Shanxi and Inner Mongolia are regarded as the most important energy bases of China. Large amounts of coal gangue, fly ash, desulfurization gypsum and waste denitration catalyst emerge during the processes of coal mining and coal to electricity conversions. This causes terrible environmental problems due to the low waste utilization ratio. Many metal elements such as Al, Li and Ga, enrich coal-related solid wastes. Our team proposes a theoretical system of the mild separation of active components, the coordinated control of mineral structure and the step by step extraction of associated elements.

We found key technologies of the mild activation by proton acid and deep desilication of silicon, the extraction of alumina by sub-molten salt, the selective adsorption and separation of rare metals, and the directional conversion of silicon resources. The technical system of utilizing alumina & silicon, the step by step extraction of associated elements and the clean recycling & carrier generation of waste denitration catalyst are established. A 3000 tons / annual experimental production line of Al-Si composite from high-alumina fly ash by deep desilication process has been built. The Al-Si composite can replace 80 Bauxite sinter. The establishment of this technical system should be standard practice for the new recycling economy pattern of energy output; low emissions and material preparation, forming green, intelligent and cyclic factories with high resources and ecology amalgamation.

Presenters and Attendees at Coal Ash Asia 2017

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-- Beijing

With CAA2017 just weeks away, we are proud to be hosting sizable international content and present our final speaker list at this year’s event. Our friends at the Slag Association of Asia will be hosting a concurrent event “Slag and Tailings Asia” in the same location at the Sheraton Grand Dongcheng Beijing Hotel.  Those who have registered for one will gain access to both events. All attendee will receive contact information for all 600 guests at this year's event and complimentary business and academic matching.

View below for our list of International Organisations in attendance as well as organisations presenting at this month’s concurrent events.

List of Presenters_CAA2017.png

To see what we’ll be talking about at this year’s events click the links below for more information:

CAS at Coal Ash Asia 2017

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- Baotou, Inner Mongolia

For the third year in a row, the Asian Coal Ash Association will be welcoming Coal Ash Solutions as the Business Matching Sponsors for this year’s Coal Ash Asia. The 3 day event will take place July 21-24 in Baotou, Inner Mongolia at the Shangri La Hotel. 

Coal Ash Solutions will be supporting international exchange by providing facilitation, introductions and translation of multiple meetings for each international delegate. Attendees will be able to request assistance with scheduling meetings as well as personal consultation on who would match best with their interests. Each attendee will receive a full contact list, included with each registration.

Business Matching will be available operating parallel to other Coal Ash Asia components including: oral presentations, poster exhibition, products and services exhibition and academic matching. We are delighted to be working with CAS. Our sponsors have facilitated over 70 successful meetings during our 2015 and 2016 events, and are looking forward to helping create meaningful exchange in 2017.

Click here to register for Coal Ash Asia and learn more about how Business Matching at this year’s event can work for you.

Hot Topic: Alumina Extraction from Fly Ash

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Baotou, Inner Mongolia

Aluminium is widely used in transportation, packaging and building materials sectors, due to its resistance to corrosion.  Alumina can be found in coal deposits all over the world including the US, India and China, the top three producers. Aluminium extraction however, is not a common practice in coal-fired power stations, as many struggle to justify the costs and energy costs. Inefficient systems have caused an obstacle for industry wide adaptation.

At this year’s Coal Ash Asia, in Baotou, Inner Mongolia, July 21-24, Industry professionals and researchers from around the globe will meet to discuss and share knowledge on Alumina Extraction. Discussions will explore energy and cost efficient extraction technologies, as well as international and domestic overviews from participating countries in our International Panel session.   

Our annual industrial tour will take place at Datang International Renewable Resources Development Co., Ltd. The holding company, Datang Group is a “big five” power company in China. The company is operating the first and only commercial project of Alumina Extraction of Fly ash in China, with production capacity of 200 000 tons/a Alumina, and producing paper and building materials products. Among these by-products are cement and calcium silicate board.

China universities, including the China Building Materials Academy in Beijing, lead in research pertaining to fly and bottom ash a processing and utilization. Feedback from the international community from Coal Ash Asia 2016 supported notions that China is year’s ahead in terms clean energy technology.

Processing and treating ash from coal fired power stations to the building materials industry is new to countries like Ukraine. “ The only industry that uses fly ash in Ukraine is the cement industry, with no processing or treatment, we simply feed what we get from the power station to the plant,” Andrey Garanin, business development manager from United Minerals Group (UMG) in Ukraine. Mr. Garanin attended CAA2016 to explore alternative applications for ash. After a visit to CAA’s annual industrial tour in Shuozhou, Mr. Garanin cited that there are many possibilities for effective adaptation in Ukrainian markets for Chinese tech. “China could help guide Ukraine to clean, energy efficient building materials. The infrastructure is unlike anything we’ve seen in Eastern Europe.”

Check out our introduction page to find our more about Coal Ash Asia 2017, who else will be joining us, and what other tracks we will cover at this year’s event.

Read the Wood Mackenzie report on alumina extraction!  (click here)