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Lime not extinguished buy in Tashkent
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Lime not extinguished

Lime not extinguished

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Uzbekistan, Tashkent
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Technical characteristics
  • BrandTNGGS
  • Country of manufactureUzbekistan

Lime — the knitting material received by high-temperature annealing (1000-1200 °C) in the mine or rotating furnaces of the sedimentary rocks consisting mainly of a CaCO3 calcium carbonate (limestones, chalk, dolomite). Under the influence of temperature there is the following chemical reaction
CaCO3 →CaO+CO2 ↑.

At the same time the carbonate of calcium loses up to 44% of the weight with carbon dioxide (CO2), becomes easy and porous. The product received in that case - lump not extinguished lime (finely porous pieces of 5-10 cm in size). Further lump not extinguished lime is subjected or to clearing with use of water or to additional grind with receiving not extinguished powdery lime.

Advantage of powdery lime before lump consists that at a zatvoreniye water she behaves like plaster knitting: at first forms plastic dough, and in 20-40 min. grabs. This results from the fact that the water to processing forming dough is partially spent for lime clearing. At the same time limy dough gets denser and loses plasticity. Thanks to smaller amount of free water materials on the basis of powdery lime less porous and stronger. Besides, lime when clearing is warmed that facilitates work with it in cold time. Depending on quality of lime, water, necessary for a zatvoreniya, makes 100-150% of the mass of lime (is defined by practical consideration).

Most the most important indicators of quality of not extinguished powdery lime is:

  1. Activity — percentage of the oxides capable is extinguished;
    2. Amount of not extinguished grains (nedozhog or burned through)

- Nedozhog (not decayed SASO3), turning out at too low temperature of roasting, quality of lime since does not possess the knitting properties reduces.

- Perezhog it is formed at too high temperature of roasting. Grains of a perezhog are slowly extinguished and can cause cracking and destruction of already hardened material.

  1. Clearing time:
    Depending on clearing time lime is subdivided into types


till 8 min.


till 25 min.


not less than 25 min.

Technical characteristics

payment order

Name of indicators



Active CaO+MgO

not less than 80%


Active MgO

no more than 3,5



no more than 5,0


Clearing temperature

With 92


Clearing time, in min.



Not extinguished grains, in %

No more than 11,0


The rest on a sieve no more No. 2

No. 008



Technical indicators:

  • - Active Cao+MgO, not less - 90%
  • - Contents act. MGO, no more - 2,8%
  • - The maintenance of SO-2, no more - 1,5%
  • - The maximum temperature of clearing - 98 °C
  • - Clearing time no more - 8 minutes
  • - Not extinguished grains, no more - 4%
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