Suitability of Stainless Steel in Potash Mine
Suitability of Stainless Steel in Potash Mine
(OP)
Currently I am working on a job that requires the use of 316 stainless support brackets in a potash mine (exposure to water, high humidity, potassium chloride, sodium chloride, and magnesium chloride)
The brackets are of a critical nature, basically if they fail the mine will be shut down for an extended period and I have been told there is no inspection schedule for these brackets.
Client would like a 40 year life.
Any thoughts, I am an electrical guy and from my internet searches SS316 should be good but would it last 40 years?
Thanks
The brackets are of a critical nature, basically if they fail the mine will be shut down for an extended period and I have been told there is no inspection schedule for these brackets.
Client would like a 40 year life.
Any thoughts, I am an electrical guy and from my internet searches SS316 should be good but would it last 40 years?
Thanks





RE: Suitability of Stainless Steel in Potash Mine
Bigger problem with potash anchors is that the material is somewhat plastic and creeps or flows...
Dik
RE: Suitability of Stainless Steel in Potash Mine
= = = = = = = = = = = = = = = = = = = =
Plymouth Tube
RE: Suitability of Stainless Steel in Potash Mine
RE: Suitability of Stainless Steel in Potash Mine
Watch out for dissimilar metal corrosion if the brackets support or contact any other metal. (Are you at Boulby ?)
Corrosionman.
RE: Suitability of Stainless Steel in Potash Mine
First - He mentioned that since the shaft is a constant temperature the humidity will be non-condensating and therefore any of the chlorides will be in dry salt form and dry chloride salts do not attack stainless.
Second - the water that these brackets come in contact with is potable water used to wash the salts off these brackets.
???any comments??? Would anyone still be concerned with using ss316?
RE: Suitability of Stainless Steel in Potash Mine
The salts will be hygroscopic (want to absorb moisture) and dry salt on the surface will not be truly dry.
For long term use I wouldn't risk it. Use 2205.
= = = = = = = = = = = = = = = = = = = =
Plymouth Tube
RE: Suitability of Stainless Steel in Potash Mine
The larger concerns I have are related to the 'creep' of the salt body.
Dik