milk of lime การใช้

• The brine was purified with milk of lime, the same as in the kettle process.
• Milk of lime or a saturated solution of lime ( limewater ) has a pH of 12.3.
• Calcium hydroxide, also known as Milk of lime or limewater, is added to the cane juice to adjust its pH to 7.
• Milk of lime, Ca ( OH ) 2, reacts with elemental sulfur to give a " lime-sulfur ", which has been used as an insecticide.
• By 1910, most glacial acetic acid was obtained from the milk of lime, and the resulting calcium acetate was then acidified with sulfuric acid to recover acetic acid.
• The acid distillate was neutralised with milk of lime to produce acetate of lime, and this solution was concentrated for evaporation on a heated revolving drum, where it was scraped off as solid flakes.
• Originally, purifiers were simple tanks of lime-water, also known as cream or milk of lime, where the raw gas from the retort bench was bubbled through to remove the sulfuret of hydrogen.
• When excess calcium hydroxide is added to limewater, a suspension of calcium hydroxide particles results, giving it a milky aspect, in which case it has the common name of "'milk of lime " '.
• MnO 2 was expensive, and Weldon developed a process for its recycling by treating the manganese chloride produced with milk of lime and blowing air through the mixture to form a precipitate known as Weldon mud which was used to generate more chlorine.
• After soaking, the hides and skins are taken for liming : treatment with milk of lime ( a basic agent ) that may involve the addition of " sharpening agents " ( disulfide reducing agents ) such as sodium sulfide, cyanides, amines, etc . The objectives of this operation are mainly to: