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The circular double-chamber vertical active lime kiln has a "Patent of invention" and two practical new Patents.

The circular double-chamber vertical active lime kiln has a "Patent of invention" and two practical new Patents.

The model is different from the MEARZ type kiln in terms of profile, working principle, and characteristics. It thus has in-built advantages.

We, SSIT, support our partners to undertake design, manufacture, construct and provide technical services to this new patented technology in a spirit of transparency, clarity to yield mutual benefit.

Main techno-economic index:
1. Output: 400t, 500t, or 600t per day; depending on the client's requirement.

2. Energy consumption:

  • ≤850kg standard coal per ton of lime (for dolomite, even lower),
  • Rotary kiln consumes 1200 - 1400kg standard coal to produce one ton of lime.

3. Physical and chemical properties of active lime

  • Residual CO2≤2.5%
  • Activity ≥350ml (4N.HCL 5 minutes titration )
  • Unburnt and dead-burnt lime ≤5%

4. Comparison between Active Lime and Common Lime used for Converter
---- Data extracted from a Chinese steel-making plant:

 

Item Unit Common lime Active lime
Lime consumption Kg/t steel 85.1 58.5
Desulfurization effect % 17.4 31.3
Scrap ratio % 7-8 10-12
Steel & iron consumption Kg/t steel 1120.8 1113.3
Times of spraying Nos. 21 12

 

The above table shows that the active lime is more suitable for steel-making

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