Carbon calcining rotary kiln

Abstract

The invention discloses a rotary kiln in the field of aluminum-used anode production, and particularly relates to a carbon calcining rotary kiln which comprises a kiln body, a lining, a kiln head, a kiln tail, a secondary air supply system and a tertiary air supply system. The secondary air supply system comprises a secondary air fan, a front secondary air pipe and a rear secondary air pipe, the front secondary air pipe and the rear secondary air pipe comprise 3-6 air pipes respectively, the air pipes are circularly arranged on the kiln body equidistantly, the straight-line distance between each two adjacent air pipes is 1.2-1.5m, the tertiary air supply system is composed of a tertiary air fan, a front tertiary air pipe and a rear tertiary air pipe, the front tertiary air pipe and the rear tertiary air pipe are composed of 3-6 air pipes respectively, the air pipes are circularly arranged on the kiln body equidistantly, and the straight-line distance between each two adjacent air pipes is 1.2-1.5m. The carbon calcining rotary kiln is in favor of fully utilizing combustion of volatiles, maintaining a longer calcining zone and high temperature of the calcining zone and improving product quality of calcined coke, and energy consumption is lowered.

Description

technical field [0001] The invention relates to a rotary kiln in the field of aluminum anode production, in particular to a carbon calcining rotary kiln. Background technique [0002] It is used in the carbon calcination rotary kiln for carbon calcination of petroleum coke in the aluminum electrolysis industry. The installation position of the second and third air ducts of the current carbon calcination rotary kiln is not suitable for the position where a large amount of volatile components escape, resulting in insufficient combustion or delay of volatile components. The starting time of combustion is shortened, which makes the originally designed calcination zone move backward, and the petroleum coke cannot be calcined according to the optimal calcination plan, which is also one of the main reasons for the poor physical and chemical indicators of calcined coke. The unreasonable position of the second and third air ducts will also cause unnecessary waste of energy and reduce...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above technical problems, the present invention provides a carbon calcination rotary kiln, the purpose of which is to solve the unreasonable installation of the secondary and tertiary air ducts of the current carbon calcination rotary kiln, resulting in insufficient combustion of volatile components or delayed combustion start time. The original design of the calcination zone is moved backward, the physical and chemical indicators of the coke after calcination are poor, and the problem of energy consumption

Images