After R&D efforts often years, a new processing technology, the Shizhuyuan Method, is developed with flotation as the backbone flowsheet and with chelate collector as the core of the flotation .

By adopting the flotation-gravity separation combined process,using reasonably the compound regulators and chelate collectors and coordinating with si.

After R&D efforts often years, a new processing technology, the Shizhuyuan Method, is developed with flotation as the backbone flowsheet and with chelate collector as the core of the flotation .

It is shown that separation results obtained by the combined use of collectors are better than by the separate use of collectors, whether mixed collector, Y89 or new chelating collector ZH.

, lead salt to activate wolfram minerals and GY—a new type chelating collector to foat wolframite and scheelite bulkly, and then cleaning flotation of scheelite at elevated temperature and w.

The chelating collector B130 has some important adventages, such as stronger collecting property and better selectivity for refractory oxidized copper ores, and is capable of convenient utility.

In the process of flotation of the mixed copper ores, addition of the chelating collector B130 not only can decrease dosage of Na2,but also can realize bulk flotation of sulphide copper ores and oxidized copper ores,as well as simplify technological flowsheet and increase technical economic index of mineral separation plants.

While copper-sulphur separation is rather difficult in strong alkaline pulps conditioned by lime,the experiments prove that their separation becomes effective by dereagentization and aeration agitation with the addition of extremely small amount of mixed collectors-butyl xanthate and diethyldithiocarbamate.