Displaying items by tag: shale

Ireland: Mannok, Sweden-based minerals company Boliden and the South Eastern Applied Materials (SEAM) research centre at South East Technological University in Carlow, Wexford and Wicklow in Ireland have launched a 30-month project to reduce the embodied CO₂ emissions of cement. The project will investigate possible uses of shale as a supplementary cementitious material (SCM) in cement production and the CO₂ curing of cement paste-based mine backfill. Enterprise Ireland has supplied funding worth €700,000 for the collaboration.

Mannok operations director Kevin Lunney said "We are delighted to be working with SEAM and Boliden on this critical research for the cement sector, which could have many far-reaching benefits for the construction sector more generally. Finding local, viable, low-carbon solutions for the industry can make a major contribution to lowering emissions in Ireland."

Boliden specialist development engineer Adam McElroy and section-mill process head Colum Burns said "This project will greatly enhance our knowledge and understanding of the potential for developing low carbon cement for mine backfill purposes and for utilising backfill systems as a carbon sink. The project will also investigate synergies between the cement manufacturing and mining industries that could enhance the sustainability of both industries."

Philippines: Germany-based Hazemag says that it has supplied two HRC 1230 roller crushers to Northern Cement’s 2.0Mt/yr Bulacan, Quezon cement plant. The supplier says that each crusher has a capacity of 800t/hr and will grind pozzolan, shale and silica in the plant’s additive crushing and handling line.

US: The Montana Department of Environmental Quality (DEQ) is accepting public comment on a proposed shale-clay exploration project by Ireland-based CRH’s subsidiary Ash Grove Cement near its Clark Gulch quarry. The Observer has reported that the project would consist of construction of a 0.62km road and the extraction and transportation of a 10,000t sample. The window for comment closes on 3 January 2020.

Canada: The Greater Vancouver Water District (GVWD) has struck a deal with Lafarge Canada to sell drinking water treatment residuals to the Richmond cement plant for use in cement production. The contract is for a three-year agreement up to a total cost of just under US$1m, according to Postmedia News. The deal follows a 12-month industrial trial that started in mid-2016.

The residuals will be used as a substitute for shale in the production process. Around 10,000t/yr of residuals will be used to replace 2100t/yr of red shale and conglomerate that are currently supplied from a quarry at Sumas Mountain, Abbotsford. The use of residuals doesn’t affect the plant’s Air Quality Permit following stack tests. As part of the agreement Lafarge will need to build additional storage capacity at its plant.