Resumen de Chinese scientists target mineral powders and diatomite processing
Equipment needed for the surface modification of mineral powders includes high speed heating technology for the dry method and reaction kettles or temperature controlled reaction tanks for the wet process. Specialised "SLG-type" continuous equipment can also be used for powder surface modification.
China is home to 70 active diatomite mines with proven reserves of 400m tonnes and prospective reserves of over 2bn tonnes, according to [Zheng]. Of this, Jilin province contains more than half, at 210m tonnes proven; Yunnan province contains 82m tonnes; and Zhejiang province contains a further 43m tonnes proven, he said.
The US Geological Survey (USGS) estimates more conservatively that China's diatomite reserves are around 110m tonnes, with 430,000 tonnes extracted in 2014. This still puts it second in the world in terms of volume, behind only the US, with reserves of 250m tonnes and a production rate of 800,000 tonnes in 2014.
