How should slurry valves for mine tailings be selected?
Thread Content
Previously, wear-resistant cast stone ball valves were used on site, but problems such as the sealing rings breaking apart and the valves getting stuck occurred; in some cases, the bolts even broke. There was no significant wear in the valve passages. Previously, the valve pressure was PN64. It belongs to the medium-high pressure category. Now, there is a plan to replace it with a hard-sealed hemispherical valve, but there should be a better solution. I would like to ask the experts here: are there any better alternatives? Thank you
I remember there were special slurry valves, PN64, JS545Y-64C
We have coaxial valves that can be used in such applications; please contact us at zhangzhen@chinaxtgy.com, and if possible, provide the relevant parameters
Our company offers professional slurry valves that are used in mines across the country. They effectively address issues such as corrosion, wear, and poor sealing when closing. If you need them, feel free to leave me a message
Clamped valve of imported brand. There are many similar performances.
Under no circumstances should hard-sealed hemispherical valves be chosen. When a hemispherical valve is fully open, its sealing surface is completely exposed to the erosion caused by the slurry, which can easily damage the sealing surface; if the valve is eccentric, slurry particles may get stuck on the sealing surface. Regarding the options for slurry valve selection, feel free to contact me privately if you need more information.
Looking at the price, it doesn’t seem to be very expensive; there should be a slurry gate valve
Using a clamp valve to convey slurry is also an option, but the challenge lies in the need to replace the rubber gaskets regularly, and the frequency of such replacements is quite high!
Ball valves all have the issue of cavities; once impurities get into these cavities, scratching will occur on the ball during subsequent opening and closing operations, and over time leakage problems will arise. As you mentioned, this can also cause the valve to get stuck, and the seal ring breaking apart is likely due to this same reason. Yankuang Guotai uses plug valves, but it seems they differ a bit from those used in your application
Here’s a website for you to check out: “Application of Ceramic Ball Valves in Tailings Backfilling”. http://www.kingway98.com/index.php?m=content&c=index&a=show&catid=51&id=77 If you have any questions, feel free to leave me a message.