Recycled Oil Usage in Mining Explosives Emulsion
PT Kaltim Prime Coal, which operates one of the world’s largest openpit mine is working with AECI Mining Explosives to explore the use of used oil for explosives emulsions to achieve two main objectives;
1. To reduce the costs of manufacturing emulsions
2. To reduce the volume of waste used oil
Disposal of waste oil is a challenging task especialy in mines, and incorrect disposal can lead to ground water contamination.
KCP mines 450 million + BCM of overburden material per annum. In 2021,according to Mining Weekly, 453 miilion BCM of overburden was mined, consuming 85 000 t of bulk explosives to produce 56.4 million tons of coal. 8 million + of used oil was generated from the year 2010 - 2021, with a part of this oil used for ANFO while the remaining oil was shipped to licensed waste processors.
Explosives alongside fuel represent a significant costs in mining, in fact they are the two of the main operation costs for most mining companies. KPC with AECI is using used oil to replace up to 100% of diesel in emulsion while meeting local standards and without reducing the bulk explosives performance. This oil is recovered from engineering workshops, separated from foreign contaminants. This saved the company on 2.3 million litres yearly average from 2011 - 2021.
AECI Mining Chemicals has developed new technologies that can be applied when waste oil is used in blasting. An appropriate emulsifier is designed to work a particular type, quality and amount of waste oil available.
To read more on this article, visit https://www.miningweekly.com/
Ref: https://www.miningweekly.com/article/explosives-firm-assists-with-disposal-of-used-oil-2022-10-28/rep_id:3650
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