Abstract:
The present invention is directed to the selective removal of ferric ion and/or ferric compounds from valuable metal recovery process streams.
Abstract:
A method is provided that includes the steps of passing microwave energy through a sulfidic material comprising arsenopyrite and pyrite to reduce at least most of the arsenopyrite to arsenic sulfide and form a calcine, the material being positioned in a reaction chamber of a reactor vessel and removing the arsenic sulfide from the calcine.
Abstract:
The present invention is directed to the microwave treatment of a class of selected metal ores and concentrates, particularly those known as chalcopyrite, in a fluidized bed reactor. The end product is commonly a mixture of copper oxide and copper sulfate, both of which are liquid soluble and directly recoverable by known techniques. The ratio of the oxide-sulfate mixture end product may be controlled by suitable control of microwave parameters.
Abstract:
A method of oxidizing carbonaceous ores to assist in the recovery of metals is provided. The method includes the steps of heating a bed of carbonaceous ore in the reaction chamber of a reactor vessel, using microwave energy to initiate and sustain oxidation of the carbonaceous ore within the bed into carbon dioxide, controlling the inflow of oxygen into the reaction chamber to provide sufficient oxygen to maintain the reaction C + O 2 = CO 2 , and monitoring the depletion of carbon from the carbonaceous ore.
Abstract translation:提供了一种氧化含碳矿石以辅助回收金属的方法。 该方法包括以下步骤:在反应器容器的反应室中加热碳质矿床,使用微波能量引发和维持床内碳质矿石氧化成二氧化碳,控制进入反应室的氧气流入 提供足够的氧以保持反应C + O 2 + CO 2,并监测来自碳质矿石的碳的消耗。
Abstract:
The present invention is directed to the use of electromagnetic radiation, acoustic energy, and surfactant injection to recover hydrocarbon-containing materials from a hydrocarbon-bearing formation.
Abstract:
A method of oxidizing carbonaceous ores to assist in the recovery of metals is provided. The method includes the steps of heating a bed of carbonaceous ore in the reaction chamber of a reactor vessel, using microwave energy to initiate and sustain oxidation of the carbonaceous ore within the bed into carbon dioxide, controlling the inflow of oxygen into the reaction chamber to provide sufficient oxygen to maintain the reaction C + O 2 = CO 2 , and monitoring the depletion of carbon from the carbonaceous ore.
Abstract:
A semi-permeable membrane process is provided that separates metal complexes having differing oxidation states, hi one implementation, the metal in the metal complexes separated in the retentate have an oxidation number of four or higher while the metal in the metal complexes passed by the membrane has an oxidation number of three or lower.
Abstract:
The present invention is directed to the use of electromagnetic radiation, acoustic energy, and surfactant injection to recover hydrocarbon-containing materials from a hydrocarbon-bearing formation.