A Method of Optimizing the Thermal System of Belt Roasting Machine

Abstract

The invention discloses a method for optimizing a thermal regulation of a belt type roasting machine, and belongs to the technical field of a roasting technical process of metallurgical industry ore or waste material preprocessing. The method comprises the following steps: establishing a three-dimensional model of the belt type roasting machine through computer software; carrying out analog calculation on a belt type roasting machine model; carrying out postprocessing analysis on an analog calculation result; and according to a postprocessing analysis result, optimizing the thermal regulation of the belt type roasting machine. The method can carry out omnibearing analog on the thermal regulation of the belt type roasting machine, so that the whole thermal regulation of the belt type roasting machine can be integrally optimized according to the postprocessing analysis result.

Description

technical field [0001] The invention relates to the technical field of roasting process for ore or waste pretreatment in the metallurgical industry, in particular to a method for optimizing the thermal system of a belt roaster. Background technique [0002] The belt sintering process was developed inspired by the belt sintering machine. [0003] Its advantages are: 1) In the process of the belt roaster, the whole process of pellet roasting, including drying, preheating, roasting and cooling, is completed on one device, which has the advantages of simple process, compact layout and light tonnage of required equipment. and other characteristics, creating conditions for reducing the floor area, reducing the amount of engineering, realizing the recycling of roasting gas, and reducing heat and power consumption; 2) The belt roaster has reached a maximum of 750m 2 , the output of a single machine can reach more than 500t, therefore, the belt roasting machine can adapt to the requ...

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Problems solved by technology

[0004] Its disadvantages are as follows: 1) The high-temperature-resistant special alloy steel used in the belt roasting machine is large in amount and high in grade, which is difficult under the current localization conditions; especially in terms of quality, it is difficult to guarantee; The whole roasting process of heating, roasting and cooling is run on one equipment. It is impossible to change the residence time of pellets in each stage by adjusting the machine speed. Configuration, it will be very troublesome, therefore, in the production process of the belt roaster, the stability of raw materials is high; 3) Since the pellets are in the process of heating up, the upper and lower material layers are under the highest temperature of each section of the furnace cover The length of the residence time varies greatly, which will affect the final strength of the finished pellets. In addition, the temperature in the furnace hood and the more or less edge effects on the trolley will also affect the quality of the finished pellets; 4 ) The belt roaster must use high calorific value gas and heavy oil as fuel

[0006] However, the control method for the preheating and roasting process in the production of the belt roaster can only realize the preheating of the burner section on the belt roaster and the quality measurement of the roasting process, and realize the automatic control of the end point of the preheating by adjusting the main induced draft fan. control, but cannot realize the overall optimization of the thermal system of the entire belt roaster

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