Patents

• [1]A device of ozone oxidation with ultrasonic dispersion
• [2]A device of solution spray oxidation
• [3]A method and device to prepare single or complex oxides metals by solution spray oxidation
• [4]A method of using aluminum ash to continuously produce alumina, cryolite and sodium silicate
• [5]A method of recovering valuable metals from WPCBs
• [6]Horizontal bottom-blown furnace and oxidative desulfurization of lead materials
• [7]A protective device of cooled solution spray nozzle
• [8]A method of biosorbent preparation and its application in wastewater treatment
• [9]A method for preparing micron silver flake
• [10]A method of separation and recovery of valuable metals from multi-metal rich powder from WPCBs
• [11]A method for preparing high tap density of the silver powder
• [12]A method of valuable metals recovery from cobalt-manganese-rich slag by multi-step controlling
• [13]A producing apparatus for nano-level cobalt oxyhydroxide