Double conical rotary kiln for carbon calcination

Abstract

The double conic carbon calcining rotary kiln includes one material feeding end cone with material feeding port, one middle straight cylinder and one material discharge end cone connected successively. The present invention is used for calcining coke and other material in carbon product making process, and has fast material feeding to avoid material return in the kiln tail, relatively slow material moving speed in the heating zone for long stagnation period of the material inside the rotary kiln, raised unit volume yield of the rotary kiln and raised calcined material quality.

Description

Technical field: [0001] The invention relates to a rotary kiln used for calcining coke and other raw materials in the production of carbon products. Background technique: [0002] The currently used carbon calcination rotary kiln generally designs the feed end as a conical shape so that the added material can enter the heating zone as soon as possible to prevent material return; the part after the feed end is designed as a straight cylinder (the conical shape mentioned in this article) , Straight cylindrical shape, both refer to the inner lining shape of the rotary kiln). According to the temperature distribution in the rotary kiln, from the feed end to the discharge end, it is usually divided into a drying zone, a heating zone, a calcining zone, and a shrinking zone (or cooling zone). [0003] The residence time of materials in the rotary kiln is calculated according to Ralph Gibbard's formula, which is: [0004] T = 1.77 ...

AI Technical Summary

Problems solved by technology

In this way, due to the structure of the feed end of the rotary kiln, only a certain volume of material can be added, and the production capacity (or capacity per unit volume) of the rotary kiln is also limited.

Images