A fundamental investigation into wollastonite beneficiation: physicochemical properties and process mineralogy

硅灰石是一种硅酸钙工业矿物，通常用作油漆和塑料的填料。 它也被用于建筑业作为石棉的替代品;陶瓷应用，包括陶瓷釉料和陶瓷体;在冶金应用中，硅灰石通常被添加到钢铁铸造和焊接的配方粉末中。 硅灰石的开采遍布地球仪，主要矿藏在中国（中国是主要生产国）以及印度和美利坚合众国。 迄今为止，从硅灰石矿石中提取硅灰石或研究其物理化学性质的工作很少，因此，本项目的重点是确定安大略塞利湾存款中硅灰石和其他矿物的物理化学性质，并利用这些知识提高对硅灰石加工的理解。 这将对塞利湾存款和全球其他硅灰石矿床产生影响。 该项目将研究硅灰石的特性，以及如何在分离系统中利用这些特性来生产可用于各种行业的可持续高品位精矿。 加拿大是世界上最重要的矿业国家之一，生产60多种矿物和金属。 采矿和矿物加工长期以来一直是该国主要的财富创造者之一。 2014年，该部门雇用了大约375，000人，为加拿大国内生产总值（GDP）贡献了570亿美元，占加拿大商品出口价值的18.2%。 对加拿大来说，提高有价值矿物加工的知识至关重要，需要对这些矿床进行可持续加工，以回收有价值矿物并减少采矿业的负面影响。

Wollastonite is a calcium silicate industrial mineral, which is commonly used as a filler in paints and plastics. It is also used in the construction industry as a substitute for asbestos; ceramic applications including ceramic glazes and bodies; in metallurgical applications wollastonite is commonly added to formulated powders for steel casting and welding. Wollastonite is mined across the globe, with major deposits found in China (China being the main producer) as well as in India and the United States of America. To date, little work has been conducted on the extraction of wollastonite from its ores, or on the physico-chemical properties of this mineral. As such, this project is centred on determining the physico-chemical properties of wollastonite and other minerals within the Seeley's Bay deposit in Ontario, and using this knowledge to improve the understanding of wollastonite processing. This will have implications for both the Seeley's Bay deposit, and other wollastonite deposits globally. This project will investigate the properties of wollastonite and how these can be utilised in separation systems to produce a sustainable high grade concentrate to be used in various industries. Canada is one of the most important mining nations in the world, producing more than 60 minerals and metals. Mining and mineral processing has long been one of the country's key wealth generators. In 2014 the sector employed approximately 375,000 people and contributed $57 billion to Canada's Gross Domestic Product (GDP), accounting for 18.2% of the value of Canadian goods exports. Improved knowledge of the processing of valuable minerals is of vital importance to Canada, and the sustainable processing of these deposits, both in recovering the valuable minerals and in reducing the negative impact of the mining industry is required.