China's wollastonite deposits are mainly distributed in three geosynclinal fold systems. The Jilin-Heilongjiang fold system with many large mineral deposits are the most important tectono-magmatic unit, followed by the South China fold system and Shanjiang fold system. There are small mineral deposits on margins of the Yangtze platform and North China platform. The intermediate and acid intrusive rocks associated with mineralization are mainly hypabyssalepizonal to medium granite, porphyritic granite, granodiorite porphyry, syenodiorite-porphyry and quartz porphyry. The host rocks are generally marine carbonate rocks containing siliceous components like chert nodules and chert bands.
The grade of wollastonite ore in China is high. According to the incomplete statistics, there are 4 deposits with an average grade (mineral content, similarly hereinafter) of wollastonite between 79.03%~71.90%. Their retained ore reserves are more than 20 million tons, accounting for 15% of the total, and are mainly distributed in Guangdong, Jilin Provinces. There are 6 deposits with an average grade within 69.21%~60.84%. Their retained reserves are more than 22 million tons, accounting for 16% of the total, and are distributed in Qinghai, Zhejiang, Anhui and Jiangsu Provinces. There are 9 deposits with an average grade within 57.10%~50.00%. Their retained reserves are more than 42 million tons, accounting for 32% of the total, and are distributed in Jilin, Liaoning and Zhejiang. There are 10 deposits with an average grade within 45%~39.98%. Their retained reserves are more than 25 million tons, accounting for 19% of the total, and are distributed in Liaoning, Hunan, and Inner Mongolia.Henan Hongxing Mining Machinery Co., Ltd is the professional manufacturer of complete sets of mining machinery, for example,classifiers,ball mill Welcome all of you to visit our official website.limestone rotary kiln:http://www.hxjqchina.com/product-list_38.html
The quality of wollastonite in China is good. The ore quality of many deposits in Jilin, Liaoning, Hubei, Zhejiang, Jiangxi and Qinghai is almost as good as that of famous Indian wollastonite. It is especially the case with the wollastonite ores in the Dadingshan wollastonite mine, Lishu County, Jilin Province, which are characterized by white color, low impurity content, and acicular or fibrous crystalls and so are the natural, low-iron superior wollastonite rarely seen in the world. The quality and varieties of their products reach the advanced standard in the world, and enjoy the high prestige in the international market.
Limestone commonly occur together with wollastonite in the deposits and can be mined as a by-product, and besides diopside and tremolite, which can be used as raw materials for architectural ceramics, can also be mined as valuable by-products. However, non-ferrous metal minerals such as copper, lead and zinc associated with wollastonite in skarns type wollastonite deposits are of little value for recovery.
The development conditions of wollastonite deposits in China are better. They are easily accessible and most deposits are suited to open-pit mining. The ores are dressed by magnetic method and floatation method with good results.
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