Sodium halide roasting is a process for vanadium- containing raw materials. The research is also thorough. The basic principle is to use salt or soda as an additive to convert multivalent vanadium into water-soluble pentavalent vanadium by calcination. The salt is directly immersed in the sodium calcined product to obtain a leach solution containing vanadium and a small amount of aluminum impurities, and then an ammonium salt (acid ammonium salt precipitation method) is added to prepare an ammonium metavanadate precipitate, and the crude V2O5 is obtained by calcination. The ammonium metavanadate is obtained by alkali dissolution, impurity removal and secondary vanadium precipitation with an ammonium salt, and V2O5 having a purity greater than 98% can be obtained after calcination. The calcined product can also be leached with sulfuric acid, which has been used in the extraction of vanadium from stone coal and low vanadium steel slag.
What is a CNC machining center?
CNC machining center is composed of mechanical equipment and CNC system, suitable for processing complex parts of high efficiency automated machine tools, and the use of cnc control system to generate digital signals to drive the milling machine mechanism to do precision machining action, in layman's terms is the computer edited program is transmitted to the machine tool, control the machine tool automatically to a product processed out. Previously, ordinary milling machines are manually operated by the manual tool change and cutting, can only process some simple workpiece, and processing efficiency is low, and the quality is not high. And CNC machining center generally comes with tool magazine, are automated processing, including the elimination of Tang Xuan decoration work threads and cutting threads, etc., with a variety of processing work to go process means, comprehensive processing capabilities are very strong.
CNC machining or computer numerical control machining is a digital manufacturing technology, CNC machines can rotate around a different number of axes, tools are usually three or five axes. The basic CNC process can be divided into. An engineer first designs a CAD model of the part, and then a technician converts the CAD file into a CNC program called G-code. Machining Center,Vertical Turning Machines,Vertical Machining Center,Horizontal Machining Center Spindle Ningbo Yien Machinery Co., Ltd , https://www.nbyienmachinery.com