3.5 Exercises Exercise 1. A slurry containing 7.23wt%CaCO3 in water is subjected to a filtration test in the laboratory. The results in Table 3.2 are obtained on a 263cm2 filter. Under identical conditions, the slurry is then filtered on a filter with a surface of 13m2. How many kg of slurry can be filtered in 20 minutes? The density of CaCO3 is 2930kg/m3 while the one of the filtrate (= water) is 1000kg/m3. Table 3.2: measurement data filtration slurry