"We know how to process industrial ash and how to export the know-how into large-scale industry. Chemically modified waste ash can be binder, building material or other raw material for other industries."
TUULI Project (Sustainable Utilization of Ash, Slag and Pyrolysis Residuals)
In this Business Finland supported project, we investigated how the properties of ash and slag can be changed through combustion conditions and mechanical and chemical processing. The utilization of processed fractions was extensively studied, especially in applications requiring solidification.
The project sought a holistic understanding of the composition and behavior of ash and other thermal by-products. The aim was to reduce the amount of ash and slag to be landfilled, to reduce the use of virgin raw materials, to develop new methods of ash treatment and to strengthen the international competitiveness of the participants.
REslag - EU Horizon 2020 Project
Project objective: to valorise the steel slags that are currently landfilled and reuse this waste as a resource for 4 innovative applications that contribute to a circular economy in the steel sector and also count with a cross-sectorial approach, focusing on energy intensive industries (ceramic, glass, cement, metallurgy, etc.).
Ash Quality Control System
The utilization possibilities of Naantali multi-fuel power plant ash. We investigated potential ash applications and the required ash quantities in the region of Southwest Finland. The aim was to create an ash quality control system for the Naantali multi-fuel power plant, and to ensure the reuse of ash generated.
Thesis - Turku University of Applied Sciences
Refining Desulphurization End Product
Processing desulphurization end product into a binder.
We optimized the desulphurization end product as an admixture with different ashes, and examined the possibilities of refining a binder from dust incineration ash mixture. We also explored the high-lime ash possibilities.
We utilized previous research and new experiments to find out, what conditions the desulphurization end product fraction needs to meet, in order to act as a binder or part of a binder, so that it is fully suitable to work directly, for example, in various civil engineering applications.
Peat Ash in Alternative Binder Development
The goal of the research was to develop a binder substitute for cement by combining and modifying waste fractions from different industries.
The fractions were activated either by mechanical grinding or chemical modification. The composition of different types of ashes and their differences in binder use were also analyzed.
Ramboll Finland Oy
Utilization Potential of Hylte Ash
Assessing binder possibilities of Hylte ash. The focus was on infrastructure applications, but potential as fertilizer raw material were also estimated.
Characterization of the ash fractions - determining chemical and mineralogical compositions. Determining parameters used in applications utilizing the cementitious properties of high calcium ashes. Preparing different cementitious masses based on the ash. The resulting strength and calorimetric data were observed, and conclusions of optimized recipes formulated.
Stora Enso Sverige
Foam Concrete Recipe Optimization
Utilization of Limestone Fines
Renotech LWA - Lightweight Aggregate
A Turku University of Applied Sciences project for Renotech Oy. The purpose was to research a lightweight aggregate developed by Renotech Oy, determine its properties, research its marketing possibilities.
The aggregate’s ability to purify and neutralize surface water and soil was tested. The research was done using a flow-through spectrophotometer, MP-AES and an automatic burette. The samples were analyzed for total phosphorous, iron, copper, zinc and for their buffer capacity. The results showed that the light weight aggregate product has more effective adsorption and neutralizing qualities, when compared to natural rock, especially for total phosphorous.
Turku University of Applied Sciences Capstone innovation project for Renotech Oy
Material Structure Analysis
We examined the layers of a wall sample in order to determine the reason for it's fragility. The sample was chipped and its layers were removed with a hacksaw. The samples were crushed in a mortar and evaluated visually. The material from the different layers was collected in jars and analyzed separately. Thermogravimetry was performed on a Leco TGA-601 instrument.
Calorific Value of Paint
The paint sample was mixed for about 3 minutes, after which a subsample was taken in a foil pan.
The sampöe was dried in an oven at 105 °C for about 2 hours. The dry paint sample was ground in a mortar into ca. 1 mm granules. The calorific value was measured with a Digital Data Systems CP 500 Bomb Calorimeter.
In order for the sample to burn properly in the calorimeter, similarly pulverized standard benzoic acid (Digital Data Systems certified calorimetric standard) with a calorific value of 26.4412 MJ/kg was added.
About 0.45 g of the mixture was weighed into a calorimeter crucible. A 105 mm long 0.1 mm NiCr wire, to which an 80 mm cotton wire was tied, was used as the ignition wire. The bomb was filled with O2 gas at a pressure of 30 bar, and the calorific value was measured according to the program.
"We have the know-how, if not within our own team, then in our network, as companies focus their expertise on improving their own products."