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Method for extracting rhenium from rhenium-rich concentrates

ActiveCN102628111AThe effect is thoroughHigh recovery rate of rheniumProcess efficiency improvementIonIon exchange
The invention provides a method for extracting rhenium from rhenium-rich concentrates. The method comprises the following steps of: mixing the rhenium-rich concentrates with quick lime, grinding a mixture, feeding oxygen-enriched air into the mixture, and roasting the mixture at a temperature of 400-900 DEG C; sizing and immersing the roasted mixture by using water, and filtering after the immersion is finished; adding an impurity removing agent into the filtered liquid so as to remove calcium and trace heavy metal ions; filtering after removing impurities; and carrying out ion exchange process on the filtered liquid, which is subjected to impurity removal and filtering, through anion exchange resin, obtaining ammonium rhenate solution after desorption, and obtaining ammonium perrhenate through reconcentration and crystallization. According to the method provided by the invention, quick lime oxygen-enriched roasting and water immersion are used, so that the operations of decoppering, arsenic removal and desulfuration are carried out, therefore rhenium, arsenic and sulfur are oxidized sufficiently under the oxygen enrichment condition; the rhenium, arsenic and sulfur are combined with calcium oxide, so that insoluble substances are generated; the effects of removing copper, arsenic and sulfur are more thorough in the water immersion condition, and the disadvantage that the calcium content is high in the quick lime roasting and water immersion technology is solved through using the impurity removing agent to remove impurities; and the recovery rate of rhenium is high, so that the method provided by the invention is favorable to industrialized application.
Owner:YANGGU XIANGGUANG COPPER

Dual-rotation direction blade hole-blade soybean milk machine

The invention relates to a soybean milk machine, in particular to a dual-rotation direction blade hole-blade soybean milk machine, comprising a top cover, a motor, a sealing ring, a rotation shaft, a sleeve, a hole blade, a grinding hole, a material cylinder, a main blade, a cylinder bottom blade and a base. The top cover and the base are respectively arranged at the top part and the bottom part of the material cylinder; the sleeve is a cylinder with the upper end closed and the lower end opened; the lower end of the sleeve is provided with four cylinder bottom blades integrated with the sleeve and evenly distributed along the circumference of the sleeve; the top cover and the base are respectively provided with a motor; the rotation shaft of the motor of the base penetrates an axial hole at the bottom part of the material cylinder and the upper end thereof is connected with the main blade which is integrated with the rotation shaft. Compared with the traditional soybean milk machine, the dual-rotation direction blade hole-blade soybean milk machine of the invention greatly improves the speed of beating the slurry particles by the blades, and increases the rate that the blades collide with the slurry particles, thereby greatly enhancing the working efficiency of the soybean milk machine.
Owner:JIANGSU LUSHI DIAMOND TOOLS CO LTD
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