A roasting rotary kiln

Abstract

The invention relates to the field of cement preparation, in particular to a roasting rotary kiln, comprising a kiln body, one end of the kiln body is provided with a preheating module, a side of the preheating module close to the kiln body is provided with a connecting groove, and the kiln body and the connecting groove are correspondingly arranged The preheating module is provided with a raw material bin with a circular arc structure, a No. 1 rotating shaft is arranged on the inner wall of the raw material bin, and the end of the No. 1 rotating shaft away from the inner wall of the raw material bin is provided with a cylindrical hollow structure. The outer diameter is consistent with the inner diameter of the raw material silo. The raw material silo is provided with a feeding port. A preheating silo with a circular structure is arranged in the preheating module and below the raw material silo. The preheating silo is connected to the raw material silo and is connected with The feeding port is set correspondingly, the No. 2 rotating shaft is set in the preheating bin, and the No. 2 rotating shaft is set with a rotor with a cylindrical structure. The invention can directly preheat the cement raw materials quickly, avoid the heat dissipation when the cement raw materials are introduced into the rotary kiln, and is suitable for popularization.

Description

technical field [0001] The invention relates to the field of cement preparation, in particular to a roasting rotary kiln. Background technique [0002] Rotary kiln is a kind of smelting equipment, also called rotary kiln. It is generally used for calcining or smelting building materials. According to its functions, it is divided into cement kiln, metallurgical chemical kiln and lime kiln. [0003] In the field of cement preparation, in order to calcine cement clinker, a roasting rotary kiln is often used, but the internal temperature of the general roasting rotary kiln is relatively high during roasting. Therefore, when adding cement raw materials to the rotary kiln, it is necessary to preheat the raw materials first, and most of the conventional preheating methods are to put the raw materials into the preheating device for heating, and then heat the preheated raw materials. The raw materials are taken out and introduced into the rotary kiln. This method is time-consuming a...

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Problems solved by technology

[0003] In the field of cement preparation, a roasting rotary kiln is often used to calcine cement clinker, but the internal temperature of the general roasting rotary kiln is relatively high, and the cement raw material is directly introduced into the rotary kiln, which is prone to bursting and has a large Therefore, when adding cement raw materials into the rotary kiln, it is necessary to preheat the raw materials first, and the conventional preheating method is to put the raw materials in the preheating device to heat them up, and then put the preheated It takes time and effort to take out the raw materials and import them into the rotary kiln. At the same time, the heat of the preheated raw materials will be dissipated quickly after taking out, which will affect the preheating effect. At the same time, the preheating effect of the conventional preheating device is not good, which is easy to cause Uneven heating of raw materials brings inconvenience to the use of rotary kiln

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