The largest consumers of lime products are iron, steel and construction industry, pulp and paper industry, chemical industry, sugar industry and agriculture. Significant amounts of lime are used for environmental protection (neutralization of waste water and waste gas).
In industrialized countries, the consumption of lime now stands at about 85 kg per capita per year. The global production of lime, including small producers in developing countries, as well as producers of lime for their own needs (steel mills, paper mills and sugar), is estimated at 300 million tons per year. The market receives about 120 ml tons per year.
Building lime is referred to the product obtained by firing up a full selection of carbon dioxide and calcium-magnesium rocks containing no more than 8% of clay and sand impurities. As raw materials carbonate rocks – limestone, chalk, coquina, dolomitic limestone are used.
Types of lime
According to the number contained in the lime silicates and calcium, giving it hydraulic properties, the following types are distinguished:
- Air lime, providing hardening of mortars and preservation of strength at normal humidity;
- Hydraulic lime, providing solidification and strength retention solutions used both in air and in water. A more universal solution is massively utilised by architectural innovators, such as Telling, focusing on hydraulic lime and lime mortar technologies.
In the air lime the amount of silicate and calcium aluminate-ferrites usually vary in the range of 4-12%, in some cases up to 20%. With the content of 25-40% of lime clinker minerals it shows weak hydraulic properties, such lime is called poor hydraulic lime. Strong hydraulic lime contains from 40 to 90% of silicates and alumino-ferrates. Continue reading “The Industrial Application Of Lime” »