1233 Table 2 - Laboratory tests for limiting fayalite dusting Test Sample Sample preparation Reagent Solution conc. (wt.%) Reagent consumption (L/m2) 1 T1-0 Drained fayalite suspension Untreated sample - - T1-lime Lime milk ~10% 0.190 T1-1080-0.5 Innocoat 1080 0.5% 3.376 T1-1080-1.0 Innocoat 1080 1.0% 3.486 T1-1080-1.5 Innocoat 1080 1.5% 3.157 T1-1080-2 Innocoat 1080 2.0% 3.258 Average reagent consumption: 3.319 2 T2-0 Fayalite from filter press Untreated sample - - T2-lime Lime milk ~10% 4.952 T2-1080-0.5 Innocoat 1080 0.5% 2.688 T2-1080-1.0 Innocoat 1080 1.0% 2.291 T2-1080-1.5 Innocoat 1080 1.5% 2.387 T2-1080-2 Innocoat 1080 2.0% 2.450 Average reagent consumption: 2.454 3 T3-lime Fayalite from filter press Lime milk ~10% 6.352 T3-1080-2.0 Innocoat 1080 2.0% 3.656 T3-1038-2.0 Innocoat 1038 2.0% 3.746 T3-1090-2.0 Innocoat 1090 2.0% 3.470 Average reagent consumption: 3.624 4 T4-1080-2.0 Fayalite from filter press Innocoat 1080 2.0% 4.043 T4-1038-2.0 Innocoat 1038 2.0% 4.091 T4-1090-2.0 Innocoat 1090 2.0% 4.022 Average reagent consumption: 4.052 3. RESULTS The following are observed: striation of the surface of the samples when wetting; breakage of their surface during transportation. Thus compromised surfaces prevent the correct testing of the quality of the formed crusts. When treated with any of the Innocoat products –1080, 1038, 1090 – the surface of the fayalite hardens – a “crust” is formed, regardless of the concentration of the solution. During testing, the surface of the treated samples is destroyed in the previously compromised areas when a very strong and directed air jet is applied – the distance from the air source to the sample is about 10 cm. Such a strong jet of air does not appear in real conditions on the deposited fayalite. When blowing the treated samples from a large distance (1 m), their surface remains intact. Such blowing is more similar to a real strong gust of wind at the fayalite landfill. The control samples were treated with water and lime milk. When treated with water, no crust forms and rapid evaporation follows; When treated with lime, a surface layer forms, but it is easily destroyed by blowing and is not
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