Category: Lime

Physical and chemical tests are conducted on limestone to determine their suitability.

Quicklime should be kept in air-tight vessels or in large heaps under cover; otherwise, it should be slaked soon after delivery or run into putty to prevent deterioration. Slaked lime can be stored safely for 3–4 months if packed in gunny bags lined with polythene, craft paper, etc. The storing should be done in weather-proof…

Lime easily affects the skin and also is a health hazard if breathed in. The moisture on the body reacts with lime resulting in skin diseases. This may be avoided by coating the skin with oil. Slaking of lime is an exothermic reaction, i.e., it produces a large amount of heat. Necessary precautions should be…

From quicklime, slaked lime and lime putty are prepared as discussed below: 1. Slaked Lime Quicklime is heaped on a masonry or wooden platform. Then water is gradually sprinkled over it till the lime is slaked and reduced to a powder form. During the sprinkling of water, the heap is turned over and over again.…

Limestones may be burnt in clamps or kilns. For kiln burning, an intermittent kiln or a continuous kiln may be used. 1. Clamp Burning When the burnt lime required is small, this method may work out to be more economical. Further, this method can be adoptable in places where limestone and the fuel are available.…

For manufacturing fat lime, the percentage of impurities in limestone should not exceed 5%. Kankar lime may be used for manufacturing hydraulic lime. Limestones required for the manufacture of specific lime may be collected and slacked in sufficient quantity near the manufacturing site. Fuels used for calcining limestone are wood, coal, coke, coal gas, charcoal,…

Manufacturing of lime comprises three stages, viz.:

It is available in quick or hydrated form. It is generally used as an undercoat and finishing coat of plaster.

The lime is produced by burning lime nodules (found in soils like black cotton soil containing silica) in the hydrated form. It can be used for masonry mortar.

This is also available in hydrated or quick form. It is used as the finishing coat in plastering and white washing.