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3 stone production and prevention of rust-yellow
- Mar 03, 2017 -

Primary rust-yellow
Marble interior contains iron minerals, such as iron carbonate, silicate minerals such as iron and iron sulfide, which in the previous chapter has detailed, iron with iron-bearing silicate minerals usually more stable, least stable iron sulfide, therefore, unstable iron sulfide stone surface rust yellow can be said to be the biggest cause of pollution. Also, biotite is more iron sulfide stable, but long-term in acid and water of role Xia, also may occurred oxidation rust and into limonite (Fe2O3, and nH2O), pollution stone formed rust yellow, even for rust Hou volume expansion and layer Layer peeling, thus in stone formed rust yellow, even for rust Hou volume expansion and layer Layer peeling, thus in stone surface formed small pit hole,
Stone caused by improper processing of rust-yellow
, Yuanshi steel see-saw process cutting, stone surface residual steel may be cleaned, after water vapor, forming rust. In General, after polishing, stone, rust usually does not happen again.
After cutting, the second, stone acid, residual acids cause iron-bearing stone due to accelerated oxidation.
Stone hanging accessories pollution
Stone or dry method with wet strengthening method when installing its iron fittings are corroded and spread to the yellow stone surface rust. Due to the factors causing rust yellow is due to instability of the stone itself contains iron-bearing, or extraneous rust rust yellow due to water penetration to the stone surface.