Pellet production technology online pre-control method and device
A production process and pelletizing technology, which is applied in the field of online pre-control of pellet production process, can solve the problems of reducing pellet production efficiency, serious problems, and reduced production efficiency
Active Publication Date: 2017-07-28
SHANDONG IRON & STEEL CO LTD
View PDF10 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] However, the method of manually visually judging whether there is a ring on the inner wall of the rotary kiln through the peephole is inaccurate. When a ring is found on the inner wall of the rotary kiln, the ring is often already serious. processing, thereby greatly reducing the production efficiency of pellets
Therefore, there is an urgent need for an online pre-control method to pre-control the pellet production process to prevent serious ring formation and production stoppages from reducing production efficiency
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
specific Embodiment approach
[0054] In a possible implementation, such as image 3 As shown, the specific implementation manner of step S100 includes:
[0055] Step S110: Divide the grate into four sections: the first drying section, the second drying section, the first preheating section and the second preheating section, and the rotary kiln is divided into three sections: kiln tail, kiln middle and kiln head. part.
[0056] In the specific implementation process, the grate machine can be divided into the first drying section, the second drying section, the first preheating section and the second preheating section along the direction of the pelletizing process, and the rotary kiln can be divided into kiln tail , The kiln and the kiln head, wherein, the direction along the pelletizing process is the direction from the grate machine to the rotary kiln.
[0057] Step S120: Measure the temperatures of the first drying section, the second drying section, the first preheating section, the second preheating ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a pellet production technology online pre-control method and device. The method includes the steps that a chain grate and a rotary kiln are both divided into multiple sections, and the temperature and pressure intensity of each section of the chain grate and the temperature and pressure intensity of each section of the rotary kiln are obtained, wherein the pressure intensity of each section of the chain grate includes the petticoat pipe pressure intensity and tuyere pressure intensity of each section; the temperature difference between the two adjacent sections of the chain grate and the rotary kiln, and the pressure difference between each section of the chain grate and the rotary kiln are calculated respectively, wherein the pressure difference between the sections of the chain grate is the difference between the petticoat pipe pressure intensity and tuyere pressure intensity of each section of the chain grate, and the pressure difference of the rotary kiln is the difference between the pressure intensity of a kiln head and the pressure intensity of a kiln tail of the rotary kiln; logic judgment values corresponding to all the temperature differences and pressure differences are obtained; according to the logic judgment values, conclusion data is calculated; according to the conclusion data and all the logic judgment values, a pellet production technology is prompted to be adjusted or a formed ring is cleaned. By means of the method and device, the formed ring state and tendency of the rotary kiln can be quickly and accurately judged, the formed ring is prevented or handled in advance, and the efficient operation requirement of chain grate-rotary kiln pellet production is met.
Description
technical field [0001] The invention relates to the field of pellet production by a grate machine and a rotary kiln, in particular to an online pre-control method and device for a pellet production process. Background technique [0002] The production process of pellets is to process iron concentrate, bentonite (such as bentonite) and water into spherical materials, and then roast at high temperature to evaporate all the water in the pellets and remove Fe 3 o 4 Oxidized to Fe 2 o 3 , so that it can achieve certain physical properties, chemical properties and shape requirements and other production indicators. There are two main pellet production processes: shaft furnace process and grate-rotary kiln process. Among them, the grate-rotary kiln process can well meet the needs of large-scale blast furnaces due to the good quality and high strength of the pellets produced. Production requirements, and has the advantages of strong adaptability to raw materials, low energy consu...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/20C22B1/216
CPCC22B1/205C22B1/216
Inventor 贾友剑徐春玲李秀海吕宏伟王尚东
Owner SHANDONG IRON & STEEL CO LTD