Research Highlight: Synthesis of High Quality Zeolites from Coal Fly Ash

- Perth, Australia

Dr. Kevin Li (Gang Li), participated in CAA2017 on behalf of the Centre for Energy, School of Mechanical & Chemical Engineering at the University of Western Australia in Perth, Australia. Dr. Li, a returning speaker to Coal Ash Asia, focused his presentation on synthesizing zeolites and necessary related conditions. The below abstract is an overview of the research presented at the conference. For more of Dr. Li’s publications and research, please click the link at the bottom of the abstract.

Abstract: Coal fly ash is a hazardous industrial waste generated from coal combustion and has been considered as an appropriate raw material for zeolite synthesis. In this study, synthesis of a high-quality type A zeolites (471m /g surface area) from fly ash at high conversion rate (98.2% aluminium and 96.5% silicon) has been achieved via a two-step alkali fusion and hydrothermal procedure. Furthermore, in preparation for production in commercials scale, up scaling of the developed synthesis process has been undertaken by using 150L reactor. More importantly, we tracked the migration of elements and quantified their distribution from fly ash to product zeolites and waste water throughout the synthesis process. Metalloid elements including arsenic and selenium, and those with strong amphoteric properties such as molybdenum were found highly mobile and mostly collected in the waste water. In comparison, less than 20% of heavy metal elements of weak amphoteric nature including copper, chromium and lead originated from the fly ash went to the waste water; the rest of these three heavy metals along with almost all of the cadmium, iron and nickel were fixed into the product zeolites. Despite the accumulation of hazardous elements in product zeolites, none of them was leachable under various harsh conditions, ensuring safe applications of such zeolites.

If you are interested in attending Coal Ash Asia 2018 in Shuozhou, please click the "CAA2018" link to register, and our event team will assist you in finding the participation that's right for you.

China Coal Combustion Product Conference: Technological Innovation to Promote Green Development

- Shuozhou City, Shanxi Province, China

The Asian Coal Ash Association would like to thank all who participated in CICCPC 2017, the most recent international exchange in Shuozhou. This year’s topics focused on fly ash and desulfurized gypsum, with the theme "Technological Innovation to Promote Green Development". During the two day event participants engaged in technical exchanges on comprehensive utilization of fly ash and gypsum and discuss the latest scientific research.

One goal of the conference was to further strengthen international and domestic cooperation to promote technological progress and industrial development. Experts from the U.S.A, Germany, Australia, Canada, Ukraine and Japan were among the 700 participants at this year’s event.

The conference was jointly organized by AsianCAA, the National Institute of Building Materials Industry Information, Shuozhou Municipal People's Government, and the Shanxi Economic and Information Commission.  Mr. David Harris, the chairman of the Asian Coal Ash Association gave keynote and regular session speeches during the proceedings. Mr. Harris outlined coal ash and other solid waste utilization technologies, international trade status’ and industry development prospects.

In conjunction with the regular plenary session, was a product/technology exhibition and academic poster display. A variety of specialized meetings also took place at CICCPC. The meeting of the National Coal-based Solid Waste Resource Industry Technology Innovation Strategic Alliance took place for the first time during proceedings. There was a Fly Ash Intelligent Sales Control System meeting as well as a special Green Building Materials and Construction Technology exchange. The Ceramic Association business forum convened during the 23rd of September and  Shuozhou City Investment Promotion and Tourism Promotion gave a special inside look into regional operations. Guests were also able to enjoy an afternoon of horse racing at Youyo County and many other networking opportunities.

High Value-added Utilization of Coal-Related Solid Wastes

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.

CAS at Coal Ash Asia 2017

- 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.

Who Will Be At World of Coal Ash 2017?

- Lexington Kentucky

AsianCAA will attend its 3rd World of Coal Ash conference, this May 8-11 in Lexington Kentucky. Mr. David Harris, Chairman of the association will be presenting during the Shortcourse portion of the event, sharing an international perspective on Asian suppliers meeting global demands. Mr. Harris serves as advisor to power generators, construction material manufacturers and municipalities in Asia. Keep reading for presentation times and locations.

Hongli Recycling

A subsidiary of Datong Coal Mine Group will be bringing a small delegation of representatives to share their unique jet steam milling technology. The jet steam facility is the largest in China with an annual output of 100,000 tons of ultrafine industrial minerals.

Institute of Technical Information for the Building Materials Industry (ITIBMI)

Our co-hosts of Coal Ash Asia and academic matching partner for this year’s Coal Ash Asia event, July 21-24 will be attending WOCA this May. The Institute of Technical Information for Building Materials Industry of China was founded in 1958 and is managed by the China Building Material Industry Association (CBMA). ITIBMI is dedicated to research on cement, glass, ceramics, new building materials and non-ferrous metal, and has publications particularly on cement itself and the building material industry. The institute is one of the key organizations working on cement technologies and materials in China, with direct relevance to energy efficiency.

Come visit AsianCAA and our members at World of Coal Ash:

Asian Coal Ash Association Booth: #94, Exhibition Room. Lexington Convention Center

Bill Martin Presentation: "Superheated Steam Jet Milling" Wednesday May 10th, 4:30pm Regency Ballroom 2, Session 6, Presentation #261

David Harris Shortcourse Presentation: "Can Asian Suppliers Meet Global Demand?" Monday, May 8, 3:30pm - 4:00pm Lexington Convention Center

Want to know who else will be exhibiting at World of Coal Ash?

Click here to see the list of 2017 exhibitors.

Sino Australia Coal Combustion Products (SACCP) Exchange: November 19-26

Brisbane & Sydney, November 19-26

On the heels of a successful Coal Ash Asia event this past September in Shuozhou City, AsianCAA will be bringing a delegation of Chinese researchers and companies to Australia for a formal academic and commercial exchange.

The itinerary (see below) consists of a multiplatform approach to coal ash utilization in Australia. A couple goals of our tour will be to focus on sustainable design and management strategies in the construction sector and current research projects and initiatives at UNSW. UNSW Built Environment has a close relationship with the Cooperative Research Centre for Low Carbon Living based at UNSW. The CRC supports end user-driven research collaborations to address the major challenge of climate change facing Australia. UNSW Built Environment researchers are involved in CRC programs dedicated to integrated building systems and engaged communities.

The Centre for Built Infrastructure Research (CBIR) is a multidisciplinary team of researchers from the faculties of Engineering, Science and Design, Architecture and Building. CBIR's nationally and internationally renowned work focuses on finding solutions to important global problems in building structures, materials, design, management, improvement, safety and conservation.

Our commercial exchange is backed by companies who are operational and technical leaders in the coal combustion products industry. Millmerran Flyash Pty Ltd is an independent processor and marketer of coal combustion products, operating out of the Millmerran power station in South East Queensland. Utilising supercritical boiler technology and low NOx burners.

Wagners CFT Manufacturing Pty Ltd have developed and commercialised a new innovative geopolymer concrete named Earth Friendly Concrete (EFC), that offers customers unique durability performance and the highest level of sustainability of any concrete available in the world today.

Cement Australia has a production capacity of over 3 million tonnes annually. Operations range from the mining of raw materials to the manufacturing, marketing and distribution of a diverse range of high performance cements and cement related products.

Adbri Masonry manufactures and supplies a range of products to the building, construction, infrastructure and mineral processing markets throughout Australia. The company’s principal activities include the production, importation and distribution of clinker, cement, industrial lime, premixed concrete, aggregates and concrete products.

To join our delegation or our itinerary of companies/institutes, please email our communications coordinator, Sonya Laing: s.laing@asiancoalash.org.

Early Bird Rates End July 1st! Register Now for Asian Coal Ash Association’s 6th Annual Coal Ash Asia Event


The Asian Coal Ash Association in collaboration with ITIBMI (Institute for Technical Information for the Building Materials Industry is under way with planning Coal Ash Asia, 2016, from September 23-26. New components at this year’s event will be an international panel discussion as well as an interview component, led by government, commercial and academic leaders of interest.

Based on the success of last year the association is offering our international delegates a unique experience at our event with complimentary business matching services. Attendees will be able to request meetings with individuals/organisations of interest and receive complimentary translation services during the course of the event.

This will be the association’s sixth year hosting and third year in Shuozhou City, Shanxi Province, with next year’s event to be held in Baotou, Inner Mongolia.  Government support from the Shuozhou government has made them a key participant and contributor to CAA events. Shuozhou city is home to one of China’s most prominent industrial parks, with currently twelve operations functioning in the industrial solid waste utilization sector.

Other activities of note include visiting a 1000 year old Pagoda, traveling on a 300km/hour high speed train to visit the city of Taiyuan (China's coal industry capital) and enjoying multiple cocktail hours and networking opportunities.

International guests are welcome to participate as oral presenters and exhibitors or by way of submitting academic research new product overviews to our poster exhibition and building materials journal. Register before July 1st and receive a discounted rate of $1500 (regular $1950).