首页>
外国专利>
PREPARATION PROCESS OF THE TRIVALENT CHROME COMPOUNDS WHICH ARE INSOLUBLE IN WATER AND WHICH ARE MADE FROM RESIDUAL PRODUCTS FROM THE CHROME ORES-WORKING
PREPARATION PROCESS OF THE TRIVALENT CHROME COMPOUNDS WHICH ARE INSOLUBLE IN WATER AND WHICH ARE MADE FROM RESIDUAL PRODUCTS FROM THE CHROME ORES-WORKING
展开▼
机译:不溶于水且由铬矿石加工残留物制成的三价铬化合物的制备过程
展开▼
页面导航
摘要
著录项
相似文献
摘要
The present invention concerns a new process and the relative plant for reducing hexavalent chromium contained in the resultant earth after the production of chromium, in order to obtain the transformation from water-soluble compounds into insoluble compounds, the process comprising the phases of mixing the said residual products with one or more reducing agents and of indirectly heating the said mixture substantially without the presence of oxygen.
展开▼