Introduction:
Hydrated
lime (or calcium hydroxide, or slaked lime) is usually a dry powder
resulting from the controlled slaking of quicklime with water. The
exothermic or released heat of reaction is captured and used to
evaporate the excess slaking water. For "slurry lime"
excess water is not evaporated and the hydrate remains as a water
suspension .
Process;
High
calcium quicklime readily reacts with water to form hydrated lime.
The reaction is highly exothermic and the process is known as
"slaking". The reaction is usually carried out in a
"slaker" (a specially designed mixer) which, through a
process of rigorous mixing, makes certain that all of the quicklime
has come into intimate contact with water and no unreacted quicklime
remains. From a general viewpoint the hydrated lime produced can be
in the form of dry hydrate, putty slurry or "milk of lime".
"High
Calcium" Quicklime Hydration: CaO H
2O-Ca(OH)
2 Heat
Specification:
Our
products are available under the following technical specification in
which we can make available a different percentage of parameters like
moisture, acid insoluble, mesh size, etc. than the one mentioned
below according to the needs of customers.
Calcium Hydroxide / Hydrated / Slaked Lime |
Calcium Hydroxide |
Ca(OH)2 |
96% |
94% |
92% |
90% |
85% |
80% |
75% |
Calcium Oxide |
CaO |
72.5 |
71 |
69.5 |
68 |
64 |
60.5 |
56.7 |
Calcium Carbonate |
CaCO3 |
0.5 |
0.7 |
1 |
2 |
4 |
6 |
8 |
Magnesium Oxide |
MgO |
0.4 |
0.4 |
0.4 |
0.4 |
0.4 |
0.4 |
0.4 |
Acid Insoluble |
SiO2 |
0.1 |
0.1 |
0.2 |
0.4 |
1.2 |
2.5 |
4 |
Alumina |
Al2O3 |
Trace |
Trace |
Trace |
Trace |
Trace |
Trace |
Trace |
Iron |
Fe2O3 |
Trace |
Trace |
Trace |
Trace |
Trace |
Trace |
Trace |
Chloride |
Cl |
Trace |
Trace |
Trace |
Trace |
Trace |
Trace |
Trace |
Moisture |
|
0.2 |
0.2 |
0.3 |
0.5 |
0.5 |
0.5 |
0.5 |
Mesh |
(BSS) |
400 |
400 |
375 |
250 |
200 |
175 |
175 |
Color |
|
Snow White |
Snow White |
Snow White |
Snow White |
Snow White |
Snow White |
Snow White |
Use
Of Lime:
Metallurgy : Steel Manufacture, Steel
Products Manufacture,Magnesium Manufacture, Alumina Manufacture, Ore
Flotation and Non-Ferrous Metal Smelting.
Pulp And Paper : Sulfate Process, Sulfite Process, Bleaching, Precipitated Calcium
Carbonate, Strawboard Manufacture, and in the treatment of pulp and
paper mill liquid wastes, as a coagulant in color removal.
Chemicals : Alkalis, Calcium Carbide and Cyanimide,
Petrochemicals, Bleaches, Dye and Dyestuff Intermediates and Coke-
By-Products. In addition, it is used in the purification of citric
acid, glucose and dextrin; metallic calcium; soda-lime, an adsorbent;
and for countless other minor or isolated purposes, such as for CO,
absorption.
Environmental Uses:
Water
Treatment : Scope, Softening, Purification, Coagulation,
Neutralization of Acid Water, Silica Removal and Removal of Other
Impurities.