Potentials range is determined in which the cobalt-tungsten alloy phase selectively dissolved in solutions of phosphoric acid to form soluble compounds of these metals, while the tungsten carbide phase remains in the ...Potentials range is determined in which the cobalt-tungsten alloy phase selectively dissolved in solutions of phosphoric acid to form soluble compounds of these metals, while the tungsten carbide phase remains in the precipitate. It shows that tungsten ores and concentrates are decomposed at 1,050℃-1,100℃ in sodium chloride-sodium metasilicate melts to form two immiscible phases, namely, halide-tungstate, containing 96% to 99% of tungsten, and silicate, containing 90% of the rest ore components.展开更多
In this new century, the new green economy growth development pattern is gradually raised. As the expanding of development background, green management pattern has gradually been listed in many enterprises. This allow...In this new century, the new green economy growth development pattern is gradually raised. As the expanding of development background, green management pattern has gradually been listed in many enterprises. This allows companies to conduct exploration deeply, and takes advantage of sustainable development of the green economy plans; so as to make the call of national energy-saving emission to be responded, environment-friendly and resource-saving society to be constructed, also can make the healthy and green corporate culture to be created.展开更多
文摘Potentials range is determined in which the cobalt-tungsten alloy phase selectively dissolved in solutions of phosphoric acid to form soluble compounds of these metals, while the tungsten carbide phase remains in the precipitate. It shows that tungsten ores and concentrates are decomposed at 1,050℃-1,100℃ in sodium chloride-sodium metasilicate melts to form two immiscible phases, namely, halide-tungstate, containing 96% to 99% of tungsten, and silicate, containing 90% of the rest ore components.
文摘In this new century, the new green economy growth development pattern is gradually raised. As the expanding of development background, green management pattern has gradually been listed in many enterprises. This allows companies to conduct exploration deeply, and takes advantage of sustainable development of the green economy plans; so as to make the call of national energy-saving emission to be responded, environment-friendly and resource-saving society to be constructed, also can make the healthy and green corporate culture to be created.
