Use of flashing angle valve
The flash angle valve is used on the discharge pipe between the autoclave and the flash tank in the oxygen pressure leaching workshop. It is a key flow control valve for slurry flow adjustment. The fluid medium characteristics: acidic slurry material, containing a small amount of chloride ions and Fluoride ion, strong corrosive, strong erosion with particles, easy to crystallize, high solid content and accompanied by flashing and cavitation phenomena;

Main features of anti-crystallization ceramic flashing angle valve
◆ Carry out directional physical and chemical analysis of new materials and redesign the valve structure, plus the ceramic spraying process to avoid the total corrosion of chloride ions and hydrofluoric acid.
◆ High-quality ceramic valve core and seat, using smart and exquisite heat-fitting design, modular assembly;
◆ Solve the crystallization of the medium in the valve cavity, prevent particles and dirt from entering the stuffing box, and the packing has a long service life.
◆ Large spherical valve cavity channel, simple flow path, no dead corners in the valve cavity, to prevent slurry from sticking or damaging the moving parts of the valve; the large cavity reduces the pressure of the medium instantaneously, and the slurry will not wash the valve body excessively. . Super large valve cavity shaft + center symmetrical shape, flow centering does not deviate, no side punch, good self-cleaning. The valve body is completed at one time by a five-axis gantry machining center to ensure assembly accuracy. After the valve body is cast, it adopts the hot isostatic pressing process after the inspection is qualified, which greatly improves the mechanical strength, and the erosion resistance is higher than that of the same type of forging materials.
◆ The structure of the clamp-on Venturi valve seat controls the spray angle of the flashing fluid to reduce the harm to the downstream equipment and pipelines of the outlet. It is easy to disassemble and assemble without special tools. The Venturi valve seat controls flashing and cavitation to prolong the life of the valve.
◆ The heavy-duty integral bonnet and heavy-duty valve stem can center the valve stem and the seat ring, resist the strong impact of fluid on the valve stem, and can monitor the working status of the metal ceramic valve core online. Top-mounted design, can replace the packing, valve stem and valve seat online.
◆ Adjust the flash vapor corrosion generation interval, carry out CFD optimization design, so that flash vapor corrosion occurs in the center of the flow channel, while optimizing the angle and length of the diversion nozzle, greatly reducing the damage to the valve internals.