据《中国建材报》报道,国际硅藻土年贸易量约45—50万吨。硅藻上最大出口国为美国,年出口量1993年为16.7万吨,其次有丹麦、法国、西班牙和墨西哥等。出口的硅藻土大多为助滤剂产品,近几年国际市场对硅藻土需求旺盛,价格坚挺。如美国煅烧硅藻土助滤剂,英国多货价为330—360英磅/吨。据市场预测,今后相当一段时间内,硅藻土主导消费领域(助滤剂、含成 According to the “China Building Materials News” report, the annual international diatomite trade volume is about 450,000-500,000 tons. The largest exporter of diatoms is the United States. The annual export volume in 1993 was 167 thousand tons, followed by Denmark, France, Spain, and Mexico. Most of the diatomaceous earth exported is filter aid products. In recent years, the international market has had a strong demand for diatomaceous earth and the price is firm. Such as the United States calcined diatomaceous earth filter aid, the British multi-price 330-360 pounds / ton. According to market forecasts, diatomite dominates the consumption sector for a considerable period of time