use of bones in sugar refining in india
Bone char Historically, bone char was often used in sugar refining as a decolorising and deashing agent, particularly in cane sugar as this contains more colored impurities. It has largely fallen out of use,[citation needed] particularly in the US and Europe, mainly for economic reasons but also due to the concerns of vegetarians and vegans, as well as various religious groups.
Natural resources of India Copper has been used since ancient times. Details of copper mining and metallurgy are available in ancient works like Arthashastra. Copper is mainly used in industrial applications, electrical/electronic equipment and Consumer products such as utensils. Major resources of copper are available at Rajasthan, Madhya pradesh and Jharkhand. As of 2010, India had 1.56 billion tonnes of copper ore.[21] India is one of the 20 major copper producers. In 2008, India produced 7,10,000 tonnes of copper.[22] Hindustan Copper Limited, a public sector company, is the only producer of primary refined copper. Post-pillar method and blast hole stoping method are used for mining. Some of the domestic demand is met through scrap recycling. In India, copper scrap is recycled through direct melting, which is a hazardous process.[21]