公开(公告)号：US4900431A

公开(公告)日：1990-02-13

申请号：US287164

申请日：1988-12-21

申请人： Cariou F. Volpi ,  Jean-Jacques Predali ,  Philippe Raveneau

发明人： Cariou F. Volpi ,  Jean-Jacques Predali ,  Philippe Raveneau

IPC分类号： B03D1/001 ,  B03D1/02

CPC分类号： B03D1/02 ,  B03D1/002 ,  B03D1/012 ,  B03D2201/007 ,  B03D2201/02 ,  B03D2203/04

摘要： The invention relates to a process for upgrading andalusite present in an ore containing it. The process involves separation from other silicates by froth flotation to obtain a concentrate whose content of andalusite is higher than 90%. It is characterized by the fact that the process comprises at least the following steps:(a) grinding as may be required and placing in pulp of the ore containing the andalusite(b) pre-conditioning the ore containing the andalusite by keeping the pH of the aqueous phase of the pulp at a value of below 3.50, the solids ratio in the pulp being higher than 30% (by weight)(c) conditioning the preconditioned ore pulp for at least 10 minutes after addition of an alkyl sulfonate;(d) dilution as may be required of the pulp to bring it to a solids ratio comprised between 15 and 30% (by weight);(e) froth flotation by bubbling calibrated air bubbles therethrough in manner known in itself, the froth flotation proper lasting at the most 10 minutes. The invention is useful in the production of refractory raw materials.

摘要翻译： 本发明涉及一种将含有矿石的矿物质升华的方法。 该方法包括通过泡沫浮选与其它硅酸盐分离，以获得其红砂石的含量高于90％的浓缩物。 其特征在于该方法至少包括以下步骤：（a）根据需要进行研磨并将其放置在含有红柱石的矿石的纸浆中（b）通过保持pH值为 纸浆的水相值低于3.50，纸浆中的固体比率高于30％（重量）（c）在加入烷基磺酸盐后调节预处理的矿浆至少10分钟; （d）可能需要的纸浆稀释使其达到15至30重量％之间的固体比; （e）以本身已知的方式通过鼓泡校准的气泡来泡沫浮选，泡沫浮选适当持续至多10分钟。 本发明可用于生产耐火材料。