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高岭土又名瓷土,系硅酸盐类(Al_2O_3·2SiO_2·xH_2O),主要用于陶瓷、耐火、无线电等行业。关于高岭土矿尘肺的X线表现,国内尚未见报导。为了解高岭土对人体的危害及其X线表现,现将18例高岭土矿尘肺报导于后。生产过程及劳动条件该矿使用手镐采掘。采矿过程中,除接触高岭土粉尘外,还接触硫铁矿石、煤炭、石灰石等。游离SiO_2含量,岩石中为17.3%,矿井内自然沉降粉尘中为13.86%,单纯高岭土粉尘中为1.26%。采出的矿石经人工选料(用刀削去表面杂质、泥沙)、烘干、搓揉、包装即为成品。其中烘干、搓揉工序粉尘浓度最高。
Kaolin also known as clay, Department of silicate (Al 2 O 3 2SiO 2 · xH 2 O), mainly for ceramics, fire-resistant, radio and other industries. On the X-ray manifestations of kaolin mine pneumoconiosis, the country has not yet been reported. In order to understand the harm of kaolin to the human body and its X-ray performance, 18 cases of kaolin mine pneumoconiosis were reported later. Production process and working conditions The mine uses pickaxe mining. Mining process, in addition to contact kaolin dust, but also contact with pyrite, coal, limestone and so on. The free SiO 2 content was 17.3% in rock, 13.86% in naturally-settled dust in the mine, and 1.26% in pure kaolin dust. Mining ore by artificial selection of materials (with a knife to remove surface impurities, sediment), drying, rubbing, packaging is the finished product. One drying, rubbing process the highest concentration of dust.