Next Article in Journal
Autonomous Operation Method of Multi-DOF Robotic Arm Based on Binocular Vision
Previous Article in Journal
Role of Melatonin to Enhance Phytoremediation Capacity
Previous Article in Special Issue
Low-Cost Activated Grape Seed-Derived Hydrochar through Hydrothermal Carbonization and Chemical Activation for Sulfamethoxazole Adsorption
Open AccessArticle

Potential for Developing Biocarbon Briquettes for Foundry Industry

1
Swerim AB, Box 812, SE-97125 Luleå, Sweden
2
Volvo Group Truck Operations, SE-40508 Gothenburg, Sweden
3
Central Metallurgical Research and Development Institute, Cairo 12422, Egypt
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(24), 5288; https://doi.org/10.3390/app9245288
Received: 16 October 2019 / Revised: 11 November 2019 / Accepted: 29 November 2019 / Published: 4 December 2019
(This article belongs to the Special Issue New Carbon Materials from Biomass and Their Applications)
The foundry industry is currently facing challenges to reduce the environmental impacts from application of fossil fuels. Replacing foundry coke with alternative renewable carbon sources can lead to significant decrease in fossil fuel consumption and fossil CO2 emission. The low bulk density, low energy density, low mechanical strength and the high reactivity of biocarbon materials are the main factors limiting their efficient implementation in a cupola furnace. The current study aimed at designing, optimizing and developing briquettes containing biocarbon, namely, biocarbon briquettes for an efficient use in cupola furnace. Laboratory hydraulic press with compaction pressure of about 160 MPa and stainless-steel moulds (Ø = 40 mm and 70 mm) were used for compaction. The density, heating value, energy density, mechanical strength and reactivity of biocarbon briquettes were measured and evaluated. The compressive strength and splitting tensile strength of biocarbon briquettes were measured by a compression device. The reactivity of biocarbon briquettes was measured under controlled conditions of temperature and gas atmosphere using the thermogravimetric analysis technique (TGA). Different types of binders were tested for the compaction of commercial charcoal fines with/without contribution of coke breeze. The effect of charcoal ratio, particle size, binder type, binder ratio, moisture content and compaction pressure on the quality of the biocarbon briquettes was investigated. Molasses with hydrated lime and cement were superior in enhancing the biocarbon briquettes strength and energy density among other tested binders and additives. The briquettes’ strength decreased as the biocarbon content increased. The optimum recipes consisted of 62% charcoal fines, 20% molasses, 10% hydrated lime and 8% cement. Cement is necessary to develop the tensile strength and hot mechanical strength of the briquettes. The charcoal with high ash content showed higher strength of briquettes but lower heating value compared to that with low ash content. Dispersion of silica suspension on charcoal particles during the mixing process was able to reduce the reactivity of biochar in the developed biocarbon briquettes. The biocarbon briquettes density and strength were increased by increasing the compaction pressure. Commercial powder hydrated lime was more effective in enhancing the briquettes’ strength compared to slaked burnt lime. Upscaling of biocarbon briquettes (Ø = 70 mm) and testing of hot mechanical strength under load indicated development of cracks which significantly reduced the strength of briquettes. Further development of biocarbon briquettes is needed to fulfil the requirements of a cupola furnace. View Full-Text
Keywords: biocarbon; biomass; foundry industry; cupola furnace; CO2 emission; briquetting biocarbon; biomass; foundry industry; cupola furnace; CO2 emission; briquetting
Show Figures

Figure 1

MDPI and ACS Style

Mousa, E.; Kazemi, M.; Larsson, M.; Karlsson, G.; Persson, E. Potential for Developing Biocarbon Briquettes for Foundry Industry. Appl. Sci. 2019, 9, 5288.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop