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Introduction to lime shaft kiln:

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Lime is used in the production of cement in the construction industry. Lime is important for many other uses and chemical applications, such as producing gypsum wallboard or drywall, neutralizing toxic chemicals, air pollution control scrubbing systems, neutralizing acidity in agricultural soils, and more. Vertical lime kilns can be used to also produce sugar.

Working principle of lime vertical/shaft kiln:

Large vertical lime kilns with a daily output of over 1,000 tons are possible, very energy efficient and easy to operate. Minimal maintenance is required as the limestone is brought to the top and into the kiln. The limestone is then burned (calcined) for a specified number of hours to produce powdered lime. The lime is then discharged from the bottom of the shaft kiln.

Pumping material from the bottom of the kiln adjusts the gravity flow of the limestone and controls the calcination residence time in the kiln. A clinker grinder grinds the remaining limestone blocks into powder. The lime is then transported via truck trailer or train. There is now a huge demand for white cement in the construction industry.

Shaft kiln parts:

1. Feeding system: Lift the raw materials to the top of the kiln and rotate the raw materials.
2. Calcining system: The vertical kiln body includes preheating zone, calcining zone and cooling zone.
3. Dust removal system: collects dust to ensure zero pollution emissions.
4. Discharging system: Rotary discharging, fast speed, large output, and transported to the finished product warehouse.
5. Control system: Automatically control the operation of each part of the system.