Lime Shaft Kiln

Lime shaft kiln

Product introduction: Lime shaft kiln, as opposed to lime rotary kiln, is an upright cylindrical cylinder equipment with full steel structure, which uses the principle of heat exchange between material weight down and hot gas up for lime firing.

Daily output: 50-500t/d

Limestone kiln size: 30-80/80-120(mm)

Calcination temperature: 1100±50°

Application industry: Suitable for metallurgy, building materials, calcium carbide, nano-calcium carbonate, aerated concrete, sugar and other industries.

Lime shaft kiln (shaft kiln) product introduction

Lime shaft kiln, as the name suggests, is an upright kiln for firing lime. The modern new technology lime shaft kiln produced by Zhengmine machinery is a modern lime kiln with environmental protection, energy saving functions and a high degree of mechanization and automation. Because of the use of modern technology, it can make full use of cheap energy, especially the use of the original environmental pollution of the gas (such as converter gas, blast furnace gas, calcium carbide furnace tail gas, etc.) as the main energy, waste into treasure.

Outstanding advantage

1, the kiln operation flexibility, from 60-100% arbitrary adjustment, can achieve stable production;

2, the applicable fuel for coke, anthracite and other solid fuel;

3, low heat consumption, reasonable use of heat energy, through the cooling lime preheated secondary high temperature air directly involved in combustion;

4, shaft kiln adopts micro-negative pressure operation (kiln top), so that the gas distribution in the kiln is uniform, which is conducive to the calcination of lime.

Working principle

After mixing the limestone and raw coal ingredients, it is transported to the top of the kiln, and the distribution inside the furnace is completed by the distributor. The material moves slowly from top to bottom by its own gravity, successively passing through the pre-tropical zone, decomposition zone and cooling zone. In the process of falling, the material carries on heat exchange with the hot rising gas flow, and the calcination of lime is completed with the decomposition of limestone and the growth of lime grains.

Technical parameter